8552aec7fd
correct screen, and bug 215 reports trouble with the status line
on small screens.
with this change a) the status line should always be refreshed
properly, b) the status line is a little shorter than it used to
be ("I" instead of "--INSERT--"), c) the status line will be
truncated if it doesn't fit on the screen, and d) if the screen
is too narrow for an error or transient status message (from
psb() or psbs()), then that message will be followed by a "Hit
Return" prompt. (it wasn't until i did this last bit that the
size grew. with this, these changes add about 150 bytes.)
- pgf
4047 lines
114 KiB
C
4047 lines
114 KiB
C
/* vi: set sw=8 ts=8: */
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/*
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* tiny vi.c: A small 'vi' clone
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* Copyright (C) 2000, 2001 Sterling Huxley <sterling@europa.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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static const char vi_Version[] =
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"$Id: vi.c,v 1.38 2004/08/19 19:15:06 andersen Exp $";
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/*
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* To compile for standalone use:
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* gcc -Wall -Os -s -DSTANDALONE -o vi vi.c
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* or
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* gcc -Wall -Os -s -DSTANDALONE -DCONFIG_FEATURE_VI_CRASHME -o vi vi.c # include testing features
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* strip vi
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*/
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/*
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* Things To Do:
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* EXINIT
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* $HOME/.exrc and ./.exrc
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* add magic to search /foo.*bar
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* add :help command
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* :map macros
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* how about mode lines: vi: set sw=8 ts=8:
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* if mark[] values were line numbers rather than pointers
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* it would be easier to change the mark when add/delete lines
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* More intelligence in refresh()
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* ":r !cmd" and "!cmd" to filter text through an external command
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* A true "undo" facility
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* An "ex" line oriented mode- maybe using "cmdedit"
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*/
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//---- Feature -------------- Bytes to implement
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#ifdef STANDALONE
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#define vi_main main
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#define CONFIG_FEATURE_VI_COLON // 4288
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#define CONFIG_FEATURE_VI_YANKMARK // 1408
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#define CONFIG_FEATURE_VI_SEARCH // 1088
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#define CONFIG_FEATURE_VI_USE_SIGNALS // 1056
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#define CONFIG_FEATURE_VI_DOT_CMD // 576
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#define CONFIG_FEATURE_VI_READONLY // 128
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#define CONFIG_FEATURE_VI_SETOPTS // 576
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#define CONFIG_FEATURE_VI_SET // 224
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#define CONFIG_FEATURE_VI_WIN_RESIZE // 256 WIN_RESIZE
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// To test editor using CRASHME:
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// vi -C filename
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// To stop testing, wait until all to text[] is deleted, or
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// Ctrl-Z and kill -9 %1
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// while in the editor Ctrl-T will toggle the crashme function on and off.
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//#define CONFIG_FEATURE_VI_CRASHME // randomly pick commands to execute
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#endif /* STANDALONE */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <termios.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <time.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <setjmp.h>
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#include <regex.h>
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#include <ctype.h>
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#include <assert.h>
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#include <errno.h>
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#include <stdarg.h>
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#ifndef STANDALONE
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#include "busybox.h"
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#endif /* STANDALONE */
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#ifdef CONFIG_LOCALE_SUPPORT
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#define Isprint(c) isprint((c))
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#else
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#define Isprint(c) ( (c) >= ' ' && (c) != 127 && (c) != ((unsigned char)'\233') )
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#endif
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#ifndef TRUE
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#define TRUE ((int)1)
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#define FALSE ((int)0)
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#endif /* TRUE */
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#define MAX_SCR_COLS BUFSIZ
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// Misc. non-Ascii keys that report an escape sequence
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#define VI_K_UP 128 // cursor key Up
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#define VI_K_DOWN 129 // cursor key Down
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#define VI_K_RIGHT 130 // Cursor Key Right
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#define VI_K_LEFT 131 // cursor key Left
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#define VI_K_HOME 132 // Cursor Key Home
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#define VI_K_END 133 // Cursor Key End
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#define VI_K_INSERT 134 // Cursor Key Insert
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#define VI_K_PAGEUP 135 // Cursor Key Page Up
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#define VI_K_PAGEDOWN 136 // Cursor Key Page Down
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#define VI_K_FUN1 137 // Function Key F1
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#define VI_K_FUN2 138 // Function Key F2
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#define VI_K_FUN3 139 // Function Key F3
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#define VI_K_FUN4 140 // Function Key F4
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#define VI_K_FUN5 141 // Function Key F5
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#define VI_K_FUN6 142 // Function Key F6
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#define VI_K_FUN7 143 // Function Key F7
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#define VI_K_FUN8 144 // Function Key F8
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#define VI_K_FUN9 145 // Function Key F9
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#define VI_K_FUN10 146 // Function Key F10
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#define VI_K_FUN11 147 // Function Key F11
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#define VI_K_FUN12 148 // Function Key F12
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/* vt102 typical ESC sequence */
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/* terminal standout start/normal ESC sequence */
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static const char SOs[] = "\033[7m";
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static const char SOn[] = "\033[0m";
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/* terminal bell sequence */
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static const char bell[] = "\007";
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/* Clear-end-of-line and Clear-end-of-screen ESC sequence */
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static const char Ceol[] = "\033[0K";
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static const char Ceos [] = "\033[0J";
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/* Cursor motion arbitrary destination ESC sequence */
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static const char CMrc[] = "\033[%d;%dH";
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/* Cursor motion up and down ESC sequence */
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static const char CMup[] = "\033[A";
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static const char CMdown[] = "\n";
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static const int YANKONLY = FALSE;
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static const int YANKDEL = TRUE;
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static const int FORWARD = 1; // code depends on "1" for array index
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static const int BACK = -1; // code depends on "-1" for array index
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static const int LIMITED = 0; // how much of text[] in char_search
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static const int FULL = 1; // how much of text[] in char_search
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static const int S_BEFORE_WS = 1; // used in skip_thing() for moving "dot"
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static const int S_TO_WS = 2; // used in skip_thing() for moving "dot"
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static const int S_OVER_WS = 3; // used in skip_thing() for moving "dot"
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static const int S_END_PUNCT = 4; // used in skip_thing() for moving "dot"
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static const int S_END_ALNUM = 5; // used in skip_thing() for moving "dot"
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typedef unsigned char Byte;
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static int vi_setops;
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#define VI_AUTOINDENT 1
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#define VI_SHOWMATCH 2
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#define VI_IGNORECASE 4
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#define VI_ERR_METHOD 8
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#define autoindent (vi_setops & VI_AUTOINDENT)
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#define showmatch (vi_setops & VI_SHOWMATCH )
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#define ignorecase (vi_setops & VI_IGNORECASE)
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/* indicate error with beep or flash */
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#define err_method (vi_setops & VI_ERR_METHOD)
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static int editing; // >0 while we are editing a file
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static int cmd_mode; // 0=command 1=insert 2=replace
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static int file_modified; // buffer contents changed
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static int last_file_modified = -1;
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static int fn_start; // index of first cmd line file name
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static int save_argc; // how many file names on cmd line
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static int cmdcnt; // repetition count
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static fd_set rfds; // use select() for small sleeps
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static struct timeval tv; // use select() for small sleeps
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static int rows, columns; // the terminal screen is this size
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static int crow, ccol, offset; // cursor is on Crow x Ccol with Horz Ofset
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static Byte *status_buffer; // mesages to the user
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#define STATUS_BUFFER_LEN 200
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static int have_status_msg; // is default edit status needed?
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static int last_status_cksum; // hash of current status line
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static Byte *cfn; // previous, current, and next file name
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static Byte *text, *end, *textend; // pointers to the user data in memory
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static Byte *screen; // pointer to the virtual screen buffer
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static int screensize; // and its size
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static Byte *screenbegin; // index into text[], of top line on the screen
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static Byte *dot; // where all the action takes place
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static int tabstop;
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static struct termios term_orig, term_vi; // remember what the cooked mode was
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static Byte erase_char; // the users erase character
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static Byte last_input_char; // last char read from user
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static Byte last_forward_char; // last char searched for with 'f'
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#ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR
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static int last_row; // where the cursor was last moved to
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#endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
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#ifdef CONFIG_FEATURE_VI_USE_SIGNALS
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static jmp_buf restart; // catch_sig()
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#endif /* CONFIG_FEATURE_VI_USE_SIGNALS */
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#if defined(CONFIG_FEATURE_VI_USE_SIGNALS) || defined(CONFIG_FEATURE_VI_CRASHME)
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static int my_pid;
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#endif
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#ifdef CONFIG_FEATURE_VI_DOT_CMD
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static int adding2q; // are we currently adding user input to q
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static Byte *last_modifying_cmd; // last modifying cmd for "."
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static Byte *ioq, *ioq_start; // pointer to string for get_one_char to "read"
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#endif /* CONFIG_FEATURE_VI_DOT_CMD */
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#if defined(CONFIG_FEATURE_VI_DOT_CMD) || defined(CONFIG_FEATURE_VI_YANKMARK)
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static Byte *modifying_cmds; // cmds that modify text[]
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#endif /* CONFIG_FEATURE_VI_DOT_CMD || CONFIG_FEATURE_VI_YANKMARK */
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#ifdef CONFIG_FEATURE_VI_READONLY
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static int vi_readonly, readonly;
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#endif /* CONFIG_FEATURE_VI_READONLY */
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#ifdef CONFIG_FEATURE_VI_YANKMARK
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static Byte *reg[28]; // named register a-z, "D", and "U" 0-25,26,27
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static int YDreg, Ureg; // default delete register and orig line for "U"
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static Byte *mark[28]; // user marks points somewhere in text[]- a-z and previous context ''
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static Byte *context_start, *context_end;
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#endif /* CONFIG_FEATURE_VI_YANKMARK */
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#ifdef CONFIG_FEATURE_VI_SEARCH
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static Byte *last_search_pattern; // last pattern from a '/' or '?' search
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#endif /* CONFIG_FEATURE_VI_SEARCH */
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static void edit_file(Byte *); // edit one file
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static void do_cmd(Byte); // execute a command
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static void sync_cursor(Byte *, int *, int *); // synchronize the screen cursor to dot
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static Byte *begin_line(Byte *); // return pointer to cur line B-o-l
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static Byte *end_line(Byte *); // return pointer to cur line E-o-l
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static Byte *prev_line(Byte *); // return pointer to prev line B-o-l
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static Byte *next_line(Byte *); // return pointer to next line B-o-l
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static Byte *end_screen(void); // get pointer to last char on screen
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static int count_lines(Byte *, Byte *); // count line from start to stop
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static Byte *find_line(int); // find begining of line #li
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static Byte *move_to_col(Byte *, int); // move "p" to column l
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static int isblnk(Byte); // is the char a blank or tab
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static void dot_left(void); // move dot left- dont leave line
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static void dot_right(void); // move dot right- dont leave line
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static void dot_begin(void); // move dot to B-o-l
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static void dot_end(void); // move dot to E-o-l
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static void dot_next(void); // move dot to next line B-o-l
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static void dot_prev(void); // move dot to prev line B-o-l
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static void dot_scroll(int, int); // move the screen up or down
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static void dot_skip_over_ws(void); // move dot pat WS
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static void dot_delete(void); // delete the char at 'dot'
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static Byte *bound_dot(Byte *); // make sure text[0] <= P < "end"
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static Byte *new_screen(int, int); // malloc virtual screen memory
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static Byte *new_text(int); // malloc memory for text[] buffer
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static Byte *char_insert(Byte *, Byte); // insert the char c at 'p'
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static Byte *stupid_insert(Byte *, Byte); // stupidly insert the char c at 'p'
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static Byte find_range(Byte **, Byte **, Byte); // return pointers for an object
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static int st_test(Byte *, int, int, Byte *); // helper for skip_thing()
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static Byte *skip_thing(Byte *, int, int, int); // skip some object
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static Byte *find_pair(Byte *, Byte); // find matching pair () [] {}
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static Byte *text_hole_delete(Byte *, Byte *); // at "p", delete a 'size' byte hole
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static Byte *text_hole_make(Byte *, int); // at "p", make a 'size' byte hole
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static Byte *yank_delete(Byte *, Byte *, int, int); // yank text[] into register then delete
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static void show_help(void); // display some help info
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static void rawmode(void); // set "raw" mode on tty
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static void cookmode(void); // return to "cooked" mode on tty
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static int mysleep(int); // sleep for 'h' 1/100 seconds
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static Byte readit(void); // read (maybe cursor) key from stdin
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static Byte get_one_char(void); // read 1 char from stdin
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static int file_size(const Byte *); // what is the byte size of "fn"
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static int file_insert(Byte *, Byte *, int);
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static int file_write(Byte *, Byte *, Byte *);
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static void place_cursor(int, int, int);
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static void screen_erase(void);
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static void clear_to_eol(void);
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static void clear_to_eos(void);
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static void standout_start(void); // send "start reverse video" sequence
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static void standout_end(void); // send "end reverse video" sequence
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static void flash(int); // flash the terminal screen
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static void show_status_line(void); // put a message on the bottom line
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static void psb(const char *, ...); // Print Status Buf
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static void psbs(const char *, ...); // Print Status Buf in standout mode
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static void ni(Byte *); // display messages
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static int format_edit_status(void); // format file status on status line
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static void redraw(int); // force a full screen refresh
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static void format_line(Byte*, Byte*, int);
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static void refresh(int); // update the terminal from screen[]
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static void Indicate_Error(void); // use flash or beep to indicate error
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#define indicate_error(c) Indicate_Error()
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#ifdef CONFIG_FEATURE_VI_SEARCH
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static Byte *char_search(Byte *, Byte *, int, int); // search for pattern starting at p
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static int mycmp(Byte *, Byte *, int); // string cmp based in "ignorecase"
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#endif /* CONFIG_FEATURE_VI_SEARCH */
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#ifdef CONFIG_FEATURE_VI_COLON
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static void Hit_Return(void);
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static Byte *get_one_address(Byte *, int *); // get colon addr, if present
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static Byte *get_address(Byte *, int *, int *); // get two colon addrs, if present
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static void colon(Byte *); // execute the "colon" mode cmds
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#endif /* CONFIG_FEATURE_VI_COLON */
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#ifdef CONFIG_FEATURE_VI_USE_SIGNALS
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static void winch_sig(int); // catch window size changes
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static void suspend_sig(int); // catch ctrl-Z
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static void catch_sig(int); // catch ctrl-C and alarm time-outs
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static void core_sig(int); // catch a core dump signal
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#endif /* CONFIG_FEATURE_VI_USE_SIGNALS */
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#ifdef CONFIG_FEATURE_VI_DOT_CMD
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static void start_new_cmd_q(Byte); // new queue for command
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static void end_cmd_q(void); // stop saving input chars
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#else /* CONFIG_FEATURE_VI_DOT_CMD */
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#define end_cmd_q()
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#endif /* CONFIG_FEATURE_VI_DOT_CMD */
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#ifdef CONFIG_FEATURE_VI_WIN_RESIZE
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static void window_size_get(int); // find out what size the window is
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#endif /* CONFIG_FEATURE_VI_WIN_RESIZE */
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#ifdef CONFIG_FEATURE_VI_SETOPTS
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static void showmatching(Byte *); // show the matching pair () [] {}
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#endif /* CONFIG_FEATURE_VI_SETOPTS */
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#if defined(CONFIG_FEATURE_VI_YANKMARK) || defined(CONFIG_FEATURE_VI_COLON) || defined(CONFIG_FEATURE_VI_CRASHME)
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static Byte *string_insert(Byte *, Byte *); // insert the string at 'p'
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#endif /* CONFIG_FEATURE_VI_YANKMARK || CONFIG_FEATURE_VI_COLON || CONFIG_FEATURE_VI_CRASHME */
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#ifdef CONFIG_FEATURE_VI_YANKMARK
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static Byte *text_yank(Byte *, Byte *, int); // save copy of "p" into a register
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static Byte what_reg(void); // what is letter of current YDreg
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static void check_context(Byte); // remember context for '' command
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|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
#ifdef CONFIG_FEATURE_VI_CRASHME
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|
static void crash_dummy();
|
|
static void crash_test();
|
|
static int crashme = 0;
|
|
#endif /* CONFIG_FEATURE_VI_CRASHME */
|
|
|
|
|
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static void write1(const char *out)
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|
{
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|
fputs(out, stdout);
|
|
}
|
|
|
|
extern int vi_main(int argc, char **argv)
|
|
{
|
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int c;
|
|
RESERVE_CONFIG_BUFFER(STATUS_BUFFER, STATUS_BUFFER_LEN);
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|
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
int i;
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|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
#if defined(CONFIG_FEATURE_VI_USE_SIGNALS) || defined(CONFIG_FEATURE_VI_CRASHME)
|
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my_pid = getpid();
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|
#endif
|
|
#ifdef CONFIG_FEATURE_VI_CRASHME
|
|
(void) srand((long) my_pid);
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|
#endif /* CONFIG_FEATURE_VI_CRASHME */
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|
|
|
status_buffer = STATUS_BUFFER;
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last_status_cksum = 0;
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|
|
#ifdef CONFIG_FEATURE_VI_READONLY
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|
vi_readonly = readonly = FALSE;
|
|
if (strncmp(argv[0], "view", 4) == 0) {
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readonly = TRUE;
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|
vi_readonly = TRUE;
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_READONLY */
|
|
vi_setops = VI_AUTOINDENT | VI_SHOWMATCH | VI_IGNORECASE | VI_ERR_METHOD;
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
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|
for (i = 0; i < 28; i++) {
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reg[i] = 0;
|
|
} // init the yank regs
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
#if defined(CONFIG_FEATURE_VI_DOT_CMD) || defined(CONFIG_FEATURE_VI_YANKMARK)
|
|
modifying_cmds = (Byte *) "aAcCdDiIJoOpPrRsxX<>~"; // cmds modifying text[]
|
|
#endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
|
|
|
// 1- process $HOME/.exrc file
|
|
// 2- process EXINIT variable from environment
|
|
// 3- process command line args
|
|
while ((c = getopt(argc, argv, "hCR")) != -1) {
|
|
switch (c) {
|
|
#ifdef CONFIG_FEATURE_VI_CRASHME
|
|
case 'C':
|
|
crashme = 1;
|
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break;
|
|
#endif /* CONFIG_FEATURE_VI_CRASHME */
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
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case 'R': // Read-only flag
|
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readonly = TRUE;
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|
vi_readonly = TRUE;
|
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break;
|
|
#endif /* CONFIG_FEATURE_VI_READONLY */
|
|
//case 'r': // recover flag- ignore- we don't use tmp file
|
|
//case 'x': // encryption flag- ignore
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|
//case 'c': // execute command first
|
|
//case 'h': // help -- just use default
|
|
default:
|
|
show_help();
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
// The argv array can be used by the ":next" and ":rewind" commands
|
|
// save optind.
|
|
fn_start = optind; // remember first file name for :next and :rew
|
|
save_argc = argc;
|
|
|
|
//----- This is the main file handling loop --------------
|
|
if (optind >= argc) {
|
|
editing = 1; // 0= exit, 1= one file, 2= multiple files
|
|
edit_file(0);
|
|
} else {
|
|
for (; optind < argc; optind++) {
|
|
editing = 1; // 0=exit, 1=one file, 2+ =many files
|
|
free(cfn);
|
|
cfn = (Byte *) bb_xstrdup(argv[optind]);
|
|
edit_file(cfn);
|
|
}
|
|
}
|
|
//-----------------------------------------------------------
|
|
|
|
return (0);
|
|
}
|
|
|
|
#ifdef CONFIG_FEATURE_VI_WIN_RESIZE
|
|
//----- See what the window size currently is --------------------
|
|
static inline void window_size_get(int fd)
|
|
{
|
|
get_terminal_width_height(fd, &columns, &rows);
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_WIN_RESIZE */
|
|
|
|
static void edit_file(Byte * fn)
|
|
{
|
|
Byte c;
|
|
int cnt, size, ch;
|
|
|
|
#ifdef CONFIG_FEATURE_VI_USE_SIGNALS
|
|
int sig;
|
|
#endif /* CONFIG_FEATURE_VI_USE_SIGNALS */
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
static Byte *cur_line;
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
|
|
rawmode();
|
|
rows = 24;
|
|
columns = 80;
|
|
ch= -1;
|
|
#ifdef CONFIG_FEATURE_VI_WIN_RESIZE
|
|
window_size_get(0);
|
|
#endif /* CONFIG_FEATURE_VI_WIN_RESIZE */
|
|
new_screen(rows, columns); // get memory for virtual screen
|
|
|
|
cnt = file_size(fn); // file size
|
|
size = 2 * cnt; // 200% of file size
|
|
new_text(size); // get a text[] buffer
|
|
screenbegin = dot = end = text;
|
|
if (fn != 0) {
|
|
ch= file_insert(fn, text, cnt);
|
|
}
|
|
if (ch < 1) {
|
|
(void) char_insert(text, '\n'); // start empty buf with dummy line
|
|
}
|
|
file_modified = 0;
|
|
last_file_modified = -1;
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
YDreg = 26; // default Yank/Delete reg
|
|
Ureg = 27; // hold orig line for "U" cmd
|
|
for (cnt = 0; cnt < 28; cnt++) {
|
|
mark[cnt] = 0;
|
|
} // init the marks
|
|
mark[26] = mark[27] = text; // init "previous context"
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
|
|
last_forward_char = last_input_char = '\0';
|
|
crow = 0;
|
|
ccol = 0;
|
|
|
|
#ifdef CONFIG_FEATURE_VI_USE_SIGNALS
|
|
catch_sig(0);
|
|
core_sig(0);
|
|
signal(SIGWINCH, winch_sig);
|
|
signal(SIGTSTP, suspend_sig);
|
|
sig = setjmp(restart);
|
|
if (sig != 0) {
|
|
const char *msg = "";
|
|
|
|
if (sig == SIGWINCH)
|
|
msg = "(window resize)";
|
|
if (sig == SIGHUP)
|
|
msg = "(hangup)";
|
|
if (sig == SIGINT)
|
|
msg = "(interrupt)";
|
|
if (sig == SIGTERM)
|
|
msg = "(terminate)";
|
|
if (sig == SIGBUS)
|
|
msg = "(bus error)";
|
|
if (sig == SIGSEGV)
|
|
msg = "(I tried to touch invalid memory)";
|
|
if (sig == SIGALRM)
|
|
msg = "(alarm)";
|
|
|
|
psbs("-- caught signal %d %s--", sig, msg);
|
|
screenbegin = dot = text;
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_USE_SIGNALS */
|
|
|
|
editing = 1;
|
|
cmd_mode = 0; // 0=command 1=insert 2='R'eplace
|
|
cmdcnt = 0;
|
|
tabstop = 8;
|
|
offset = 0; // no horizontal offset
|
|
c = '\0';
|
|
#ifdef CONFIG_FEATURE_VI_DOT_CMD
|
|
free(last_modifying_cmd);
|
|
free(ioq_start);
|
|
ioq = ioq_start = last_modifying_cmd = 0;
|
|
adding2q = 0;
|
|
#endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
|
redraw(FALSE); // dont force every col re-draw
|
|
show_status_line();
|
|
|
|
//------This is the main Vi cmd handling loop -----------------------
|
|
while (editing > 0) {
|
|
#ifdef CONFIG_FEATURE_VI_CRASHME
|
|
if (crashme > 0) {
|
|
if ((end - text) > 1) {
|
|
crash_dummy(); // generate a random command
|
|
} else {
|
|
crashme = 0;
|
|
dot =
|
|
string_insert(text, (Byte *) "\n\n##### Ran out of text to work on. #####\n\n"); // insert the string
|
|
refresh(FALSE);
|
|
}
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_CRASHME */
|
|
last_input_char = c = get_one_char(); // get a cmd from user
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
// save a copy of the current line- for the 'U" command
|
|
if (begin_line(dot) != cur_line) {
|
|
cur_line = begin_line(dot);
|
|
text_yank(begin_line(dot), end_line(dot), Ureg);
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
#ifdef CONFIG_FEATURE_VI_DOT_CMD
|
|
// These are commands that change text[].
|
|
// Remember the input for the "." command
|
|
if (!adding2q && ioq_start == 0
|
|
&& strchr((char *) modifying_cmds, c) != NULL) {
|
|
start_new_cmd_q(c);
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
|
do_cmd(c); // execute the user command
|
|
//
|
|
// poll to see if there is input already waiting. if we are
|
|
// not able to display output fast enough to keep up, skip
|
|
// the display update until we catch up with input.
|
|
if (mysleep(0) == 0) {
|
|
// no input pending- so update output
|
|
refresh(FALSE);
|
|
show_status_line();
|
|
}
|
|
#ifdef CONFIG_FEATURE_VI_CRASHME
|
|
if (crashme > 0)
|
|
crash_test(); // test editor variables
|
|
#endif /* CONFIG_FEATURE_VI_CRASHME */
|
|
}
|
|
//-------------------------------------------------------------------
|
|
|
|
place_cursor(rows, 0, FALSE); // go to bottom of screen
|
|
clear_to_eol(); // Erase to end of line
|
|
cookmode();
|
|
}
|
|
|
|
//----- The Colon commands -------------------------------------
|
|
#ifdef CONFIG_FEATURE_VI_COLON
|
|
static Byte *get_one_address(Byte * p, int *addr) // get colon addr, if present
|
|
{
|
|
int st;
|
|
Byte *q;
|
|
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
Byte c;
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
#ifdef CONFIG_FEATURE_VI_SEARCH
|
|
Byte *pat, buf[BUFSIZ];
|
|
#endif /* CONFIG_FEATURE_VI_SEARCH */
|
|
|
|
*addr = -1; // assume no addr
|
|
if (*p == '.') { // the current line
|
|
p++;
|
|
q = begin_line(dot);
|
|
*addr = count_lines(text, q);
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
} else if (*p == '\'') { // is this a mark addr
|
|
p++;
|
|
c = tolower(*p);
|
|
p++;
|
|
if (c >= 'a' && c <= 'z') {
|
|
// we have a mark
|
|
c = c - 'a';
|
|
q = mark[(int) c];
|
|
if (q != NULL) { // is mark valid
|
|
*addr = count_lines(text, q); // count lines
|
|
}
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
#ifdef CONFIG_FEATURE_VI_SEARCH
|
|
} else if (*p == '/') { // a search pattern
|
|
q = buf;
|
|
for (p++; *p; p++) {
|
|
if (*p == '/')
|
|
break;
|
|
*q++ = *p;
|
|
*q = '\0';
|
|
}
|
|
pat = (Byte *) bb_xstrdup((char *) buf); // save copy of pattern
|
|
if (*p == '/')
|
|
p++;
|
|
q = char_search(dot, pat, FORWARD, FULL);
|
|
if (q != NULL) {
|
|
*addr = count_lines(text, q);
|
|
}
|
|
free(pat);
|
|
#endif /* CONFIG_FEATURE_VI_SEARCH */
|
|
} else if (*p == '$') { // the last line in file
|
|
p++;
|
|
q = begin_line(end - 1);
|
|
*addr = count_lines(text, q);
|
|
} else if (isdigit(*p)) { // specific line number
|
|
sscanf((char *) p, "%d%n", addr, &st);
|
|
p += st;
|
|
} else { // I don't reconise this
|
|
// unrecognised address- assume -1
|
|
*addr = -1;
|
|
}
|
|
return (p);
|
|
}
|
|
|
|
static Byte *get_address(Byte *p, int *b, int *e) // get two colon addrs, if present
|
|
{
|
|
//----- get the address' i.e., 1,3 'a,'b -----
|
|
// get FIRST addr, if present
|
|
while (isblnk(*p))
|
|
p++; // skip over leading spaces
|
|
if (*p == '%') { // alias for 1,$
|
|
p++;
|
|
*b = 1;
|
|
*e = count_lines(text, end-1);
|
|
goto ga0;
|
|
}
|
|
p = get_one_address(p, b);
|
|
while (isblnk(*p))
|
|
p++;
|
|
if (*p == ',') { // is there a address separator
|
|
p++;
|
|
while (isblnk(*p))
|
|
p++;
|
|
// get SECOND addr, if present
|
|
p = get_one_address(p, e);
|
|
}
|
|
ga0:
|
|
while (isblnk(*p))
|
|
p++; // skip over trailing spaces
|
|
return (p);
|
|
}
|
|
|
|
#ifdef CONFIG_FEATURE_VI_SETOPTS
|
|
static void setops(const Byte *args, const char *opname, int flg_no,
|
|
const char *short_opname, int opt)
|
|
{
|
|
const char *a = (char *) args + flg_no;
|
|
int l = strlen(opname) - 1; /* opname have + ' ' */
|
|
|
|
if (strncasecmp(a, opname, l) == 0 ||
|
|
strncasecmp(a, short_opname, 2) == 0) {
|
|
if(flg_no)
|
|
vi_setops &= ~opt;
|
|
else
|
|
vi_setops |= opt;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static void colon(Byte * buf)
|
|
{
|
|
Byte c, *orig_buf, *buf1, *q, *r;
|
|
Byte *fn, cmd[BUFSIZ], args[BUFSIZ];
|
|
int i, l, li, ch, st, b, e;
|
|
int useforce = FALSE, forced = FALSE;
|
|
struct stat st_buf;
|
|
|
|
// :3154 // if (-e line 3154) goto it else stay put
|
|
// :4,33w! foo // write a portion of buffer to file "foo"
|
|
// :w // write all of buffer to current file
|
|
// :q // quit
|
|
// :q! // quit- dont care about modified file
|
|
// :'a,'z!sort -u // filter block through sort
|
|
// :'f // goto mark "f"
|
|
// :'fl // list literal the mark "f" line
|
|
// :.r bar // read file "bar" into buffer before dot
|
|
// :/123/,/abc/d // delete lines from "123" line to "abc" line
|
|
// :/xyz/ // goto the "xyz" line
|
|
// :s/find/replace/ // substitute pattern "find" with "replace"
|
|
// :!<cmd> // run <cmd> then return
|
|
//
|
|
|
|
if (strlen((char *) buf) <= 0)
|
|
goto vc1;
|
|
if (*buf == ':')
|
|
buf++; // move past the ':'
|
|
|
|
li = st = ch = i = 0;
|
|
b = e = -1;
|
|
q = text; // assume 1,$ for the range
|
|
r = end - 1;
|
|
li = count_lines(text, end - 1);
|
|
fn = cfn; // default to current file
|
|
memset(cmd, '\0', BUFSIZ); // clear cmd[]
|
|
memset(args, '\0', BUFSIZ); // clear args[]
|
|
|
|
// look for optional address(es) :. :1 :1,9 :'q,'a :%
|
|
buf = get_address(buf, &b, &e);
|
|
|
|
// remember orig command line
|
|
orig_buf = buf;
|
|
|
|
// get the COMMAND into cmd[]
|
|
buf1 = cmd;
|
|
while (*buf != '\0') {
|
|
if (isspace(*buf))
|
|
break;
|
|
*buf1++ = *buf++;
|
|
}
|
|
// get any ARGuments
|
|
while (isblnk(*buf))
|
|
buf++;
|
|
strcpy((char *) args, (char *) buf);
|
|
buf1 = last_char_is((char *)cmd, '!');
|
|
if (buf1) {
|
|
useforce = TRUE;
|
|
*buf1 = '\0'; // get rid of !
|
|
}
|
|
if (b >= 0) {
|
|
// if there is only one addr, then the addr
|
|
// is the line number of the single line the
|
|
// user wants. So, reset the end
|
|
// pointer to point at end of the "b" line
|
|
q = find_line(b); // what line is #b
|
|
r = end_line(q);
|
|
li = 1;
|
|
}
|
|
if (e >= 0) {
|
|
// we were given two addrs. change the
|
|
// end pointer to the addr given by user.
|
|
r = find_line(e); // what line is #e
|
|
r = end_line(r);
|
|
li = e - b + 1;
|
|
}
|
|
// ------------ now look for the command ------------
|
|
i = strlen((char *) cmd);
|
|
if (i == 0) { // :123CR goto line #123
|
|
if (b >= 0) {
|
|
dot = find_line(b); // what line is #b
|
|
dot_skip_over_ws();
|
|
}
|
|
} else if (strncmp((char *) cmd, "!", 1) == 0) { // run a cmd
|
|
// :!ls run the <cmd>
|
|
(void) alarm(0); // wait for input- no alarms
|
|
place_cursor(rows - 1, 0, FALSE); // go to Status line
|
|
clear_to_eol(); // clear the line
|
|
cookmode();
|
|
system(orig_buf+1); // run the cmd
|
|
rawmode();
|
|
Hit_Return(); // let user see results
|
|
(void) alarm(3); // done waiting for input
|
|
} else if (strncmp((char *) cmd, "=", i) == 0) { // where is the address
|
|
if (b < 0) { // no addr given- use defaults
|
|
b = e = count_lines(text, dot);
|
|
}
|
|
psb("%d", b);
|
|
} else if (strncasecmp((char *) cmd, "delete", i) == 0) { // delete lines
|
|
if (b < 0) { // no addr given- use defaults
|
|
q = begin_line(dot); // assume .,. for the range
|
|
r = end_line(dot);
|
|
}
|
|
dot = yank_delete(q, r, 1, YANKDEL); // save, then delete lines
|
|
dot_skip_over_ws();
|
|
} else if (strncasecmp((char *) cmd, "edit", i) == 0) { // Edit a file
|
|
int sr;
|
|
sr= 0;
|
|
// don't edit, if the current file has been modified
|
|
if (file_modified && ! useforce) {
|
|
psbs("No write since last change (:edit! overrides)");
|
|
goto vc1;
|
|
}
|
|
if (strlen(args) > 0) {
|
|
// the user supplied a file name
|
|
fn= args;
|
|
} else if (cfn != 0 && strlen(cfn) > 0) {
|
|
// no user supplied name- use the current filename
|
|
fn= cfn;
|
|
goto vc5;
|
|
} else {
|
|
// no user file name, no current name- punt
|
|
psbs("No current filename");
|
|
goto vc1;
|
|
}
|
|
|
|
// see if file exists- if not, its just a new file request
|
|
if ((sr=stat((char*)fn, &st_buf)) < 0) {
|
|
// This is just a request for a new file creation.
|
|
// The file_insert below will fail but we get
|
|
// an empty buffer with a file name. Then the "write"
|
|
// command can do the create.
|
|
} else {
|
|
if ((st_buf.st_mode & (S_IFREG)) == 0) {
|
|
// This is not a regular file
|
|
psbs("\"%s\" is not a regular file", fn);
|
|
goto vc1;
|
|
}
|
|
if ((st_buf.st_mode & (S_IRUSR | S_IRGRP | S_IROTH)) == 0) {
|
|
// dont have any read permissions
|
|
psbs("\"%s\" is not readable", fn);
|
|
goto vc1;
|
|
}
|
|
}
|
|
|
|
// There is a read-able regular file
|
|
// make this the current file
|
|
q = (Byte *) bb_xstrdup((char *) fn); // save the cfn
|
|
free(cfn); // free the old name
|
|
cfn = q; // remember new cfn
|
|
|
|
vc5:
|
|
// delete all the contents of text[]
|
|
new_text(2 * file_size(fn));
|
|
screenbegin = dot = end = text;
|
|
|
|
// insert new file
|
|
ch = file_insert(fn, text, file_size(fn));
|
|
|
|
if (ch < 1) {
|
|
// start empty buf with dummy line
|
|
(void) char_insert(text, '\n');
|
|
ch= 1;
|
|
}
|
|
file_modified = 0;
|
|
last_file_modified = -1;
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
if (Ureg >= 0 && Ureg < 28 && reg[Ureg] != 0) {
|
|
free(reg[Ureg]); // free orig line reg- for 'U'
|
|
reg[Ureg]= 0;
|
|
}
|
|
if (YDreg >= 0 && YDreg < 28 && reg[YDreg] != 0) {
|
|
free(reg[YDreg]); // free default yank/delete register
|
|
reg[YDreg]= 0;
|
|
}
|
|
for (li = 0; li < 28; li++) {
|
|
mark[li] = 0;
|
|
} // init the marks
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
// how many lines in text[]?
|
|
li = count_lines(text, end - 1);
|
|
psb("\"%s\"%s"
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
"%s"
|
|
#endif /* CONFIG_FEATURE_VI_READONLY */
|
|
" %dL, %dC", cfn,
|
|
(sr < 0 ? " [New file]" : ""),
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
((vi_readonly || readonly) ? " [Read only]" : ""),
|
|
#endif /* CONFIG_FEATURE_VI_READONLY */
|
|
li, ch);
|
|
} else if (strncasecmp((char *) cmd, "file", i) == 0) { // what File is this
|
|
if (b != -1 || e != -1) {
|
|
ni((Byte *) "No address allowed on this command");
|
|
goto vc1;
|
|
}
|
|
if (strlen((char *) args) > 0) {
|
|
// user wants a new filename
|
|
free(cfn);
|
|
cfn = (Byte *) bb_xstrdup((char *) args);
|
|
} else {
|
|
// user wants file status info
|
|
last_status_cksum = 0; // force status update
|
|
}
|
|
} else if (strncasecmp((char *) cmd, "features", i) == 0) { // what features are available
|
|
// print out values of all features
|
|
place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen
|
|
clear_to_eol(); // clear the line
|
|
cookmode();
|
|
show_help();
|
|
rawmode();
|
|
Hit_Return();
|
|
} else if (strncasecmp((char *) cmd, "list", i) == 0) { // literal print line
|
|
if (b < 0) { // no addr given- use defaults
|
|
q = begin_line(dot); // assume .,. for the range
|
|
r = end_line(dot);
|
|
}
|
|
place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen
|
|
clear_to_eol(); // clear the line
|
|
puts("\r");
|
|
for (; q <= r; q++) {
|
|
int c_is_no_print;
|
|
|
|
c = *q;
|
|
c_is_no_print = c > 127 && !Isprint(c);
|
|
if (c_is_no_print) {
|
|
c = '.';
|
|
standout_start();
|
|
}
|
|
if (c == '\n') {
|
|
write1("$\r");
|
|
} else if (c < ' ' || c == 127) {
|
|
putchar('^');
|
|
if(c == 127)
|
|
c = '?';
|
|
else
|
|
c += '@';
|
|
}
|
|
putchar(c);
|
|
if (c_is_no_print)
|
|
standout_end();
|
|
}
|
|
#ifdef CONFIG_FEATURE_VI_SET
|
|
vc2:
|
|
#endif /* CONFIG_FEATURE_VI_SET */
|
|
Hit_Return();
|
|
} else if ((strncasecmp((char *) cmd, "quit", i) == 0) || // Quit
|
|
(strncasecmp((char *) cmd, "next", i) == 0)) { // edit next file
|
|
if (useforce) {
|
|
// force end of argv list
|
|
if (*cmd == 'q') {
|
|
optind = save_argc;
|
|
}
|
|
editing = 0;
|
|
goto vc1;
|
|
}
|
|
// don't exit if the file been modified
|
|
if (file_modified) {
|
|
psbs("No write since last change (:%s! overrides)",
|
|
(*cmd == 'q' ? "quit" : "next"));
|
|
goto vc1;
|
|
}
|
|
// are there other file to edit
|
|
if (*cmd == 'q' && optind < save_argc - 1) {
|
|
psbs("%d more file to edit", (save_argc - optind - 1));
|
|
goto vc1;
|
|
}
|
|
if (*cmd == 'n' && optind >= save_argc - 1) {
|
|
psbs("No more files to edit");
|
|
goto vc1;
|
|
}
|
|
editing = 0;
|
|
} else if (strncasecmp((char *) cmd, "read", i) == 0) { // read file into text[]
|
|
fn = args;
|
|
if (strlen((char *) fn) <= 0) {
|
|
psbs("No filename given");
|
|
goto vc1;
|
|
}
|
|
if (b < 0) { // no addr given- use defaults
|
|
q = begin_line(dot); // assume "dot"
|
|
}
|
|
// read after current line- unless user said ":0r foo"
|
|
if (b != 0)
|
|
q = next_line(q);
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
l= readonly; // remember current files' status
|
|
#endif
|
|
ch = file_insert(fn, q, file_size(fn));
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
readonly= l;
|
|
#endif
|
|
if (ch < 0)
|
|
goto vc1; // nothing was inserted
|
|
// how many lines in text[]?
|
|
li = count_lines(q, q + ch - 1);
|
|
psb("\"%s\""
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
"%s"
|
|
#endif /* CONFIG_FEATURE_VI_READONLY */
|
|
" %dL, %dC", fn,
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
((vi_readonly || readonly) ? " [Read only]" : ""),
|
|
#endif /* CONFIG_FEATURE_VI_READONLY */
|
|
li, ch);
|
|
if (ch > 0) {
|
|
// if the insert is before "dot" then we need to update
|
|
if (q <= dot)
|
|
dot += ch;
|
|
file_modified++;
|
|
}
|
|
} else if (strncasecmp((char *) cmd, "rewind", i) == 0) { // rewind cmd line args
|
|
if (file_modified && ! useforce) {
|
|
psbs("No write since last change (:rewind! overrides)");
|
|
} else {
|
|
// reset the filenames to edit
|
|
optind = fn_start - 1;
|
|
editing = 0;
|
|
}
|
|
#ifdef CONFIG_FEATURE_VI_SET
|
|
} else if (strncasecmp((char *) cmd, "set", i) == 0) { // set or clear features
|
|
i = 0; // offset into args
|
|
if (strlen((char *) args) == 0) {
|
|
// print out values of all options
|
|
place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen
|
|
clear_to_eol(); // clear the line
|
|
printf("----------------------------------------\r\n");
|
|
#ifdef CONFIG_FEATURE_VI_SETOPTS
|
|
if (!autoindent)
|
|
printf("no");
|
|
printf("autoindent ");
|
|
if (!err_method)
|
|
printf("no");
|
|
printf("flash ");
|
|
if (!ignorecase)
|
|
printf("no");
|
|
printf("ignorecase ");
|
|
if (!showmatch)
|
|
printf("no");
|
|
printf("showmatch ");
|
|
printf("tabstop=%d ", tabstop);
|
|
#endif /* CONFIG_FEATURE_VI_SETOPTS */
|
|
printf("\r\n");
|
|
goto vc2;
|
|
}
|
|
if (strncasecmp((char *) args, "no", 2) == 0)
|
|
i = 2; // ":set noautoindent"
|
|
#ifdef CONFIG_FEATURE_VI_SETOPTS
|
|
setops(args, "autoindent ", i, "ai", VI_AUTOINDENT);
|
|
setops(args, "flash ", i, "fl", VI_ERR_METHOD);
|
|
setops(args, "ignorecase ", i, "ic", VI_IGNORECASE);
|
|
setops(args, "showmatch ", i, "ic", VI_SHOWMATCH);
|
|
if (strncasecmp((char *) args + i, "tabstop=%d ", 7) == 0) {
|
|
sscanf(strchr((char *) args + i, '='), "=%d", &ch);
|
|
if (ch > 0 && ch < columns - 1)
|
|
tabstop = ch;
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_SETOPTS */
|
|
#endif /* CONFIG_FEATURE_VI_SET */
|
|
#ifdef CONFIG_FEATURE_VI_SEARCH
|
|
} else if (strncasecmp((char *) cmd, "s", 1) == 0) { // substitute a pattern with a replacement pattern
|
|
Byte *ls, *F, *R;
|
|
int gflag;
|
|
|
|
// F points to the "find" pattern
|
|
// R points to the "replace" pattern
|
|
// replace the cmd line delimiters "/" with NULLs
|
|
gflag = 0; // global replace flag
|
|
c = orig_buf[1]; // what is the delimiter
|
|
F = orig_buf + 2; // start of "find"
|
|
R = (Byte *) strchr((char *) F, c); // middle delimiter
|
|
if (!R) goto colon_s_fail;
|
|
*R++ = '\0'; // terminate "find"
|
|
buf1 = (Byte *) strchr((char *) R, c);
|
|
if (!buf1) goto colon_s_fail;
|
|
*buf1++ = '\0'; // terminate "replace"
|
|
if (*buf1 == 'g') { // :s/foo/bar/g
|
|
buf1++;
|
|
gflag++; // turn on gflag
|
|
}
|
|
q = begin_line(q);
|
|
if (b < 0) { // maybe :s/foo/bar/
|
|
q = begin_line(dot); // start with cur line
|
|
b = count_lines(text, q); // cur line number
|
|
}
|
|
if (e < 0)
|
|
e = b; // maybe :.s/foo/bar/
|
|
for (i = b; i <= e; i++) { // so, :20,23 s \0 find \0 replace \0
|
|
ls = q; // orig line start
|
|
vc4:
|
|
buf1 = char_search(q, F, FORWARD, LIMITED); // search cur line only for "find"
|
|
if (buf1 != NULL) {
|
|
// we found the "find" pattern- delete it
|
|
(void) text_hole_delete(buf1, buf1 + strlen((char *) F) - 1);
|
|
// inset the "replace" patern
|
|
(void) string_insert(buf1, R); // insert the string
|
|
// check for "global" :s/foo/bar/g
|
|
if (gflag == 1) {
|
|
if ((buf1 + strlen((char *) R)) < end_line(ls)) {
|
|
q = buf1 + strlen((char *) R);
|
|
goto vc4; // don't let q move past cur line
|
|
}
|
|
}
|
|
}
|
|
q = next_line(ls);
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_SEARCH */
|
|
} else if (strncasecmp((char *) cmd, "version", i) == 0) { // show software version
|
|
psb("%s", vi_Version);
|
|
} else if ((strncasecmp((char *) cmd, "write", i) == 0) || // write text to file
|
|
(strncasecmp((char *) cmd, "wq", i) == 0) ||
|
|
(strncasecmp((char *) cmd, "x", i) == 0)) {
|
|
// is there a file name to write to?
|
|
if (strlen((char *) args) > 0) {
|
|
fn = args;
|
|
}
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
if ((vi_readonly || readonly) && ! useforce) {
|
|
psbs("\"%s\" File is read only", fn);
|
|
goto vc3;
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_READONLY */
|
|
// how many lines in text[]?
|
|
li = count_lines(q, r);
|
|
ch = r - q + 1;
|
|
// see if file exists- if not, its just a new file request
|
|
if (useforce) {
|
|
// if "fn" is not write-able, chmod u+w
|
|
// sprintf(syscmd, "chmod u+w %s", fn);
|
|
// system(syscmd);
|
|
forced = TRUE;
|
|
}
|
|
l = file_write(fn, q, r);
|
|
if (useforce && forced) {
|
|
// chmod u-w
|
|
// sprintf(syscmd, "chmod u-w %s", fn);
|
|
// system(syscmd);
|
|
forced = FALSE;
|
|
}
|
|
psb("\"%s\" %dL, %dC", fn, li, l);
|
|
if (q == text && r == end - 1 && l == ch) {
|
|
file_modified = 0;
|
|
last_file_modified = -1;
|
|
}
|
|
if ((cmd[0] == 'x' || cmd[1] == 'q') && l == ch) {
|
|
editing = 0;
|
|
}
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
vc3:;
|
|
#endif /* CONFIG_FEATURE_VI_READONLY */
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
} else if (strncasecmp((char *) cmd, "yank", i) == 0) { // yank lines
|
|
if (b < 0) { // no addr given- use defaults
|
|
q = begin_line(dot); // assume .,. for the range
|
|
r = end_line(dot);
|
|
}
|
|
text_yank(q, r, YDreg);
|
|
li = count_lines(q, r);
|
|
psb("Yank %d lines (%d chars) into [%c]",
|
|
li, strlen((char *) reg[YDreg]), what_reg());
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
} else {
|
|
// cmd unknown
|
|
ni((Byte *) cmd);
|
|
}
|
|
vc1:
|
|
dot = bound_dot(dot); // make sure "dot" is valid
|
|
return;
|
|
#ifdef CONFIG_FEATURE_VI_SEARCH
|
|
colon_s_fail:
|
|
psb(":s expression missing delimiters");
|
|
#endif
|
|
}
|
|
|
|
static void Hit_Return(void)
|
|
{
|
|
char c;
|
|
|
|
standout_start(); // start reverse video
|
|
write1("[Hit return to continue]");
|
|
standout_end(); // end reverse video
|
|
while ((c = get_one_char()) != '\n' && c != '\r') /*do nothing */
|
|
;
|
|
redraw(TRUE); // force redraw all
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_COLON */
|
|
|
|
//----- Synchronize the cursor to Dot --------------------------
|
|
static void sync_cursor(Byte * d, int *row, int *col)
|
|
{
|
|
Byte *beg_cur, *end_cur; // begin and end of "d" line
|
|
Byte *beg_scr, *end_scr; // begin and end of screen
|
|
Byte *tp;
|
|
int cnt, ro, co;
|
|
|
|
beg_cur = begin_line(d); // first char of cur line
|
|
end_cur = end_line(d); // last char of cur line
|
|
|
|
beg_scr = end_scr = screenbegin; // first char of screen
|
|
end_scr = end_screen(); // last char of screen
|
|
|
|
if (beg_cur < screenbegin) {
|
|
// "d" is before top line on screen
|
|
// how many lines do we have to move
|
|
cnt = count_lines(beg_cur, screenbegin);
|
|
sc1:
|
|
screenbegin = beg_cur;
|
|
if (cnt > (rows - 1) / 2) {
|
|
// we moved too many lines. put "dot" in middle of screen
|
|
for (cnt = 0; cnt < (rows - 1) / 2; cnt++) {
|
|
screenbegin = prev_line(screenbegin);
|
|
}
|
|
}
|
|
} else if (beg_cur > end_scr) {
|
|
// "d" is after bottom line on screen
|
|
// how many lines do we have to move
|
|
cnt = count_lines(end_scr, beg_cur);
|
|
if (cnt > (rows - 1) / 2)
|
|
goto sc1; // too many lines
|
|
for (ro = 0; ro < cnt - 1; ro++) {
|
|
// move screen begin the same amount
|
|
screenbegin = next_line(screenbegin);
|
|
// now, move the end of screen
|
|
end_scr = next_line(end_scr);
|
|
end_scr = end_line(end_scr);
|
|
}
|
|
}
|
|
// "d" is on screen- find out which row
|
|
tp = screenbegin;
|
|
for (ro = 0; ro < rows - 1; ro++) { // drive "ro" to correct row
|
|
if (tp == beg_cur)
|
|
break;
|
|
tp = next_line(tp);
|
|
}
|
|
|
|
// find out what col "d" is on
|
|
co = 0;
|
|
do { // drive "co" to correct column
|
|
if (*tp == '\n' || *tp == '\0')
|
|
break;
|
|
if (*tp == '\t') {
|
|
// 7 - (co % 8 )
|
|
co += ((tabstop - 1) - (co % tabstop));
|
|
} else if (*tp < ' ' || *tp == 127) {
|
|
co++; // display as ^X, use 2 columns
|
|
}
|
|
} while (tp++ < d && ++co);
|
|
|
|
// "co" is the column where "dot" is.
|
|
// The screen has "columns" columns.
|
|
// The currently displayed columns are 0+offset -- columns+ofset
|
|
// |-------------------------------------------------------------|
|
|
// ^ ^ ^
|
|
// offset | |------- columns ----------------|
|
|
//
|
|
// If "co" is already in this range then we do not have to adjust offset
|
|
// but, we do have to subtract the "offset" bias from "co".
|
|
// If "co" is outside this range then we have to change "offset".
|
|
// If the first char of a line is a tab the cursor will try to stay
|
|
// in column 7, but we have to set offset to 0.
|
|
|
|
if (co < 0 + offset) {
|
|
offset = co;
|
|
}
|
|
if (co >= columns + offset) {
|
|
offset = co - columns + 1;
|
|
}
|
|
// if the first char of the line is a tab, and "dot" is sitting on it
|
|
// force offset to 0.
|
|
if (d == beg_cur && *d == '\t') {
|
|
offset = 0;
|
|
}
|
|
co -= offset;
|
|
|
|
*row = ro;
|
|
*col = co;
|
|
}
|
|
|
|
//----- Text Movement Routines ---------------------------------
|
|
static Byte *begin_line(Byte * p) // return pointer to first char cur line
|
|
{
|
|
while (p > text && p[-1] != '\n')
|
|
p--; // go to cur line B-o-l
|
|
return (p);
|
|
}
|
|
|
|
static Byte *end_line(Byte * p) // return pointer to NL of cur line line
|
|
{
|
|
while (p < end - 1 && *p != '\n')
|
|
p++; // go to cur line E-o-l
|
|
return (p);
|
|
}
|
|
|
|
static inline Byte *dollar_line(Byte * p) // return pointer to just before NL line
|
|
{
|
|
while (p < end - 1 && *p != '\n')
|
|
p++; // go to cur line E-o-l
|
|
// Try to stay off of the Newline
|
|
if (*p == '\n' && (p - begin_line(p)) > 0)
|
|
p--;
|
|
return (p);
|
|
}
|
|
|
|
static Byte *prev_line(Byte * p) // return pointer first char prev line
|
|
{
|
|
p = begin_line(p); // goto begining of cur line
|
|
if (p[-1] == '\n' && p > text)
|
|
p--; // step to prev line
|
|
p = begin_line(p); // goto begining of prev line
|
|
return (p);
|
|
}
|
|
|
|
static Byte *next_line(Byte * p) // return pointer first char next line
|
|
{
|
|
p = end_line(p);
|
|
if (*p == '\n' && p < end - 1)
|
|
p++; // step to next line
|
|
return (p);
|
|
}
|
|
|
|
//----- Text Information Routines ------------------------------
|
|
static Byte *end_screen(void)
|
|
{
|
|
Byte *q;
|
|
int cnt;
|
|
|
|
// find new bottom line
|
|
q = screenbegin;
|
|
for (cnt = 0; cnt < rows - 2; cnt++)
|
|
q = next_line(q);
|
|
q = end_line(q);
|
|
return (q);
|
|
}
|
|
|
|
static int count_lines(Byte * start, Byte * stop) // count line from start to stop
|
|
{
|
|
Byte *q;
|
|
int cnt;
|
|
|
|
if (stop < start) { // start and stop are backwards- reverse them
|
|
q = start;
|
|
start = stop;
|
|
stop = q;
|
|
}
|
|
cnt = 0;
|
|
stop = end_line(stop); // get to end of this line
|
|
for (q = start; q <= stop && q <= end - 1; q++) {
|
|
if (*q == '\n')
|
|
cnt++;
|
|
}
|
|
return (cnt);
|
|
}
|
|
|
|
static Byte *find_line(int li) // find begining of line #li
|
|
{
|
|
Byte *q;
|
|
|
|
for (q = text; li > 1; li--) {
|
|
q = next_line(q);
|
|
}
|
|
return (q);
|
|
}
|
|
|
|
//----- Dot Movement Routines ----------------------------------
|
|
static void dot_left(void)
|
|
{
|
|
if (dot > text && dot[-1] != '\n')
|
|
dot--;
|
|
}
|
|
|
|
static void dot_right(void)
|
|
{
|
|
if (dot < end - 1 && *dot != '\n')
|
|
dot++;
|
|
}
|
|
|
|
static void dot_begin(void)
|
|
{
|
|
dot = begin_line(dot); // return pointer to first char cur line
|
|
}
|
|
|
|
static void dot_end(void)
|
|
{
|
|
dot = end_line(dot); // return pointer to last char cur line
|
|
}
|
|
|
|
static Byte *move_to_col(Byte * p, int l)
|
|
{
|
|
int co;
|
|
|
|
p = begin_line(p);
|
|
co = 0;
|
|
do {
|
|
if (*p == '\n' || *p == '\0')
|
|
break;
|
|
if (*p == '\t') {
|
|
// 7 - (co % 8 )
|
|
co += ((tabstop - 1) - (co % tabstop));
|
|
} else if (*p < ' ' || *p == 127) {
|
|
co++; // display as ^X, use 2 columns
|
|
}
|
|
} while (++co <= l && p++ < end);
|
|
return (p);
|
|
}
|
|
|
|
static void dot_next(void)
|
|
{
|
|
dot = next_line(dot);
|
|
}
|
|
|
|
static void dot_prev(void)
|
|
{
|
|
dot = prev_line(dot);
|
|
}
|
|
|
|
static void dot_scroll(int cnt, int dir)
|
|
{
|
|
Byte *q;
|
|
|
|
for (; cnt > 0; cnt--) {
|
|
if (dir < 0) {
|
|
// scroll Backwards
|
|
// ctrl-Y scroll up one line
|
|
screenbegin = prev_line(screenbegin);
|
|
} else {
|
|
// scroll Forwards
|
|
// ctrl-E scroll down one line
|
|
screenbegin = next_line(screenbegin);
|
|
}
|
|
}
|
|
// make sure "dot" stays on the screen so we dont scroll off
|
|
if (dot < screenbegin)
|
|
dot = screenbegin;
|
|
q = end_screen(); // find new bottom line
|
|
if (dot > q)
|
|
dot = begin_line(q); // is dot is below bottom line?
|
|
dot_skip_over_ws();
|
|
}
|
|
|
|
static void dot_skip_over_ws(void)
|
|
{
|
|
// skip WS
|
|
while (isspace(*dot) && *dot != '\n' && dot < end - 1)
|
|
dot++;
|
|
}
|
|
|
|
static void dot_delete(void) // delete the char at 'dot'
|
|
{
|
|
(void) text_hole_delete(dot, dot);
|
|
}
|
|
|
|
static Byte *bound_dot(Byte * p) // make sure text[0] <= P < "end"
|
|
{
|
|
if (p >= end && end > text) {
|
|
p = end - 1;
|
|
indicate_error('1');
|
|
}
|
|
if (p < text) {
|
|
p = text;
|
|
indicate_error('2');
|
|
}
|
|
return (p);
|
|
}
|
|
|
|
//----- Helper Utility Routines --------------------------------
|
|
|
|
//----------------------------------------------------------------
|
|
//----- Char Routines --------------------------------------------
|
|
/* Chars that are part of a word-
|
|
* 0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
|
|
* Chars that are Not part of a word (stoppers)
|
|
* !"#$%&'()*+,-./:;<=>?@[\]^`{|}~
|
|
* Chars that are WhiteSpace
|
|
* TAB NEWLINE VT FF RETURN SPACE
|
|
* DO NOT COUNT NEWLINE AS WHITESPACE
|
|
*/
|
|
|
|
static Byte *new_screen(int ro, int co)
|
|
{
|
|
int li;
|
|
|
|
free(screen);
|
|
screensize = ro * co + 8;
|
|
screen = (Byte *) xmalloc(screensize);
|
|
// initialize the new screen. assume this will be a empty file.
|
|
screen_erase();
|
|
// non-existent text[] lines start with a tilde (~).
|
|
for (li = 1; li < ro - 1; li++) {
|
|
screen[(li * co) + 0] = '~';
|
|
}
|
|
return (screen);
|
|
}
|
|
|
|
static Byte *new_text(int size)
|
|
{
|
|
if (size < 10240)
|
|
size = 10240; // have a minimum size for new files
|
|
free(text);
|
|
text = (Byte *) xmalloc(size + 8);
|
|
memset(text, '\0', size); // clear new text[]
|
|
//text += 4; // leave some room for "oops"
|
|
textend = text + size - 1;
|
|
//textend -= 4; // leave some root for "oops"
|
|
return (text);
|
|
}
|
|
|
|
#ifdef CONFIG_FEATURE_VI_SEARCH
|
|
static int mycmp(Byte * s1, Byte * s2, int len)
|
|
{
|
|
int i;
|
|
|
|
i = strncmp((char *) s1, (char *) s2, len);
|
|
#ifdef CONFIG_FEATURE_VI_SETOPTS
|
|
if (ignorecase) {
|
|
i = strncasecmp((char *) s1, (char *) s2, len);
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_SETOPTS */
|
|
return (i);
|
|
}
|
|
|
|
static Byte *char_search(Byte * p, Byte * pat, int dir, int range) // search for pattern starting at p
|
|
{
|
|
#ifndef REGEX_SEARCH
|
|
Byte *start, *stop;
|
|
int len;
|
|
|
|
len = strlen((char *) pat);
|
|
if (dir == FORWARD) {
|
|
stop = end - 1; // assume range is p - end-1
|
|
if (range == LIMITED)
|
|
stop = next_line(p); // range is to next line
|
|
for (start = p; start < stop; start++) {
|
|
if (mycmp(start, pat, len) == 0) {
|
|
return (start);
|
|
}
|
|
}
|
|
} else if (dir == BACK) {
|
|
stop = text; // assume range is text - p
|
|
if (range == LIMITED)
|
|
stop = prev_line(p); // range is to prev line
|
|
for (start = p - len; start >= stop; start--) {
|
|
if (mycmp(start, pat, len) == 0) {
|
|
return (start);
|
|
}
|
|
}
|
|
}
|
|
// pattern not found
|
|
return (NULL);
|
|
#else /*REGEX_SEARCH */
|
|
char *q;
|
|
struct re_pattern_buffer preg;
|
|
int i;
|
|
int size, range;
|
|
|
|
re_syntax_options = RE_SYNTAX_POSIX_EXTENDED;
|
|
preg.translate = 0;
|
|
preg.fastmap = 0;
|
|
preg.buffer = 0;
|
|
preg.allocated = 0;
|
|
|
|
// assume a LIMITED forward search
|
|
q = next_line(p);
|
|
q = end_line(q);
|
|
q = end - 1;
|
|
if (dir == BACK) {
|
|
q = prev_line(p);
|
|
q = text;
|
|
}
|
|
// count the number of chars to search over, forward or backward
|
|
size = q - p;
|
|
if (size < 0)
|
|
size = p - q;
|
|
// RANGE could be negative if we are searching backwards
|
|
range = q - p;
|
|
|
|
q = (char *) re_compile_pattern(pat, strlen((char *) pat), &preg);
|
|
if (q != 0) {
|
|
// The pattern was not compiled
|
|
psbs("bad search pattern: \"%s\": %s", pat, q);
|
|
i = 0; // return p if pattern not compiled
|
|
goto cs1;
|
|
}
|
|
|
|
q = p;
|
|
if (range < 0) {
|
|
q = p - size;
|
|
if (q < text)
|
|
q = text;
|
|
}
|
|
// search for the compiled pattern, preg, in p[]
|
|
// range < 0- search backward
|
|
// range > 0- search forward
|
|
// 0 < start < size
|
|
// re_search() < 0 not found or error
|
|
// re_search() > 0 index of found pattern
|
|
// struct pattern char int int int struct reg
|
|
// re_search (*pattern_buffer, *string, size, start, range, *regs)
|
|
i = re_search(&preg, q, size, 0, range, 0);
|
|
if (i == -1) {
|
|
p = 0;
|
|
i = 0; // return NULL if pattern not found
|
|
}
|
|
cs1:
|
|
if (dir == FORWARD) {
|
|
p = p + i;
|
|
} else {
|
|
p = p - i;
|
|
}
|
|
return (p);
|
|
#endif /*REGEX_SEARCH */
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_SEARCH */
|
|
|
|
static Byte *char_insert(Byte * p, Byte c) // insert the char c at 'p'
|
|
{
|
|
if (c == 22) { // Is this an ctrl-V?
|
|
p = stupid_insert(p, '^'); // use ^ to indicate literal next
|
|
p--; // backup onto ^
|
|
refresh(FALSE); // show the ^
|
|
c = get_one_char();
|
|
*p = c;
|
|
p++;
|
|
file_modified++; // has the file been modified
|
|
} else if (c == 27) { // Is this an ESC?
|
|
cmd_mode = 0;
|
|
cmdcnt = 0;
|
|
end_cmd_q(); // stop adding to q
|
|
last_status_cksum = 0; // force status update
|
|
if ((p[-1] != '\n') && (dot>text)) {
|
|
p--;
|
|
}
|
|
} else if (c == erase_char || c == 8 || c == 127) { // Is this a BS
|
|
// 123456789
|
|
if ((p[-1] != '\n') && (dot>text)) {
|
|
p--;
|
|
p = text_hole_delete(p, p); // shrink buffer 1 char
|
|
#ifdef CONFIG_FEATURE_VI_DOT_CMD
|
|
// also rmove char from last_modifying_cmd
|
|
if (last_modifying_cmd != 0 && strlen((char *) last_modifying_cmd) > 0) {
|
|
Byte *q;
|
|
|
|
q = last_modifying_cmd;
|
|
q[strlen((char *) q) - 1] = '\0'; // erase BS
|
|
q[strlen((char *) q) - 1] = '\0'; // erase prev char
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
|
}
|
|
} else {
|
|
// insert a char into text[]
|
|
Byte *sp; // "save p"
|
|
|
|
if (c == 13)
|
|
c = '\n'; // translate \r to \n
|
|
sp = p; // remember addr of insert
|
|
p = stupid_insert(p, c); // insert the char
|
|
#ifdef CONFIG_FEATURE_VI_SETOPTS
|
|
if (showmatch && strchr(")]}", *sp) != NULL) {
|
|
showmatching(sp);
|
|
}
|
|
if (autoindent && c == '\n') { // auto indent the new line
|
|
Byte *q;
|
|
|
|
q = prev_line(p); // use prev line as templet
|
|
for (; isblnk(*q); q++) {
|
|
p = stupid_insert(p, *q); // insert the char
|
|
}
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_SETOPTS */
|
|
}
|
|
return (p);
|
|
}
|
|
|
|
static Byte *stupid_insert(Byte * p, Byte c) // stupidly insert the char c at 'p'
|
|
{
|
|
p = text_hole_make(p, 1);
|
|
if (p != 0) {
|
|
*p = c;
|
|
file_modified++; // has the file been modified
|
|
p++;
|
|
}
|
|
return (p);
|
|
}
|
|
|
|
static Byte find_range(Byte ** start, Byte ** stop, Byte c)
|
|
{
|
|
Byte *save_dot, *p, *q;
|
|
int cnt;
|
|
|
|
save_dot = dot;
|
|
p = q = dot;
|
|
|
|
if (strchr("cdy><", c)) {
|
|
// these cmds operate on whole lines
|
|
p = q = begin_line(p);
|
|
for (cnt = 1; cnt < cmdcnt; cnt++) {
|
|
q = next_line(q);
|
|
}
|
|
q = end_line(q);
|
|
} else if (strchr("^%$0bBeEft", c)) {
|
|
// These cmds operate on char positions
|
|
do_cmd(c); // execute movement cmd
|
|
q = dot;
|
|
} else if (strchr("wW", c)) {
|
|
do_cmd(c); // execute movement cmd
|
|
// if we are at the next word's first char
|
|
// step back one char
|
|
// but check the possibilities when it is true
|
|
if (dot > text && ((isspace(dot[-1]) && !isspace(dot[0]))
|
|
|| (ispunct(dot[-1]) && !ispunct(dot[0]))
|
|
|| (isalnum(dot[-1]) && !isalnum(dot[0]))))
|
|
dot--; // move back off of next word
|
|
if (dot > text && *dot == '\n')
|
|
dot--; // stay off NL
|
|
q = dot;
|
|
} else if (strchr("H-k{", c)) {
|
|
// these operate on multi-lines backwards
|
|
q = end_line(dot); // find NL
|
|
do_cmd(c); // execute movement cmd
|
|
dot_begin();
|
|
p = dot;
|
|
} else if (strchr("L+j}\r\n", c)) {
|
|
// these operate on multi-lines forwards
|
|
p = begin_line(dot);
|
|
do_cmd(c); // execute movement cmd
|
|
dot_end(); // find NL
|
|
q = dot;
|
|
} else {
|
|
c = 27; // error- return an ESC char
|
|
//break;
|
|
}
|
|
*start = p;
|
|
*stop = q;
|
|
if (q < p) {
|
|
*start = q;
|
|
*stop = p;
|
|
}
|
|
dot = save_dot;
|
|
return (c);
|
|
}
|
|
|
|
static int st_test(Byte * p, int type, int dir, Byte * tested)
|
|
{
|
|
Byte c, c0, ci;
|
|
int test, inc;
|
|
|
|
inc = dir;
|
|
c = c0 = p[0];
|
|
ci = p[inc];
|
|
test = 0;
|
|
|
|
if (type == S_BEFORE_WS) {
|
|
c = ci;
|
|
test = ((!isspace(c)) || c == '\n');
|
|
}
|
|
if (type == S_TO_WS) {
|
|
c = c0;
|
|
test = ((!isspace(c)) || c == '\n');
|
|
}
|
|
if (type == S_OVER_WS) {
|
|
c = c0;
|
|
test = ((isspace(c)));
|
|
}
|
|
if (type == S_END_PUNCT) {
|
|
c = ci;
|
|
test = ((ispunct(c)));
|
|
}
|
|
if (type == S_END_ALNUM) {
|
|
c = ci;
|
|
test = ((isalnum(c)) || c == '_');
|
|
}
|
|
*tested = c;
|
|
return (test);
|
|
}
|
|
|
|
static Byte *skip_thing(Byte * p, int linecnt, int dir, int type)
|
|
{
|
|
Byte c;
|
|
|
|
while (st_test(p, type, dir, &c)) {
|
|
// make sure we limit search to correct number of lines
|
|
if (c == '\n' && --linecnt < 1)
|
|
break;
|
|
if (dir >= 0 && p >= end - 1)
|
|
break;
|
|
if (dir < 0 && p <= text)
|
|
break;
|
|
p += dir; // move to next char
|
|
}
|
|
return (p);
|
|
}
|
|
|
|
// find matching char of pair () [] {}
|
|
static Byte *find_pair(Byte * p, Byte c)
|
|
{
|
|
Byte match, *q;
|
|
int dir, level;
|
|
|
|
match = ')';
|
|
level = 1;
|
|
dir = 1; // assume forward
|
|
switch (c) {
|
|
case '(':
|
|
match = ')';
|
|
break;
|
|
case '[':
|
|
match = ']';
|
|
break;
|
|
case '{':
|
|
match = '}';
|
|
break;
|
|
case ')':
|
|
match = '(';
|
|
dir = -1;
|
|
break;
|
|
case ']':
|
|
match = '[';
|
|
dir = -1;
|
|
break;
|
|
case '}':
|
|
match = '{';
|
|
dir = -1;
|
|
break;
|
|
}
|
|
for (q = p + dir; text <= q && q < end; q += dir) {
|
|
// look for match, count levels of pairs (( ))
|
|
if (*q == c)
|
|
level++; // increase pair levels
|
|
if (*q == match)
|
|
level--; // reduce pair level
|
|
if (level == 0)
|
|
break; // found matching pair
|
|
}
|
|
if (level != 0)
|
|
q = NULL; // indicate no match
|
|
return (q);
|
|
}
|
|
|
|
#ifdef CONFIG_FEATURE_VI_SETOPTS
|
|
// show the matching char of a pair, () [] {}
|
|
static void showmatching(Byte * p)
|
|
{
|
|
Byte *q, *save_dot;
|
|
|
|
// we found half of a pair
|
|
q = find_pair(p, *p); // get loc of matching char
|
|
if (q == NULL) {
|
|
indicate_error('3'); // no matching char
|
|
} else {
|
|
// "q" now points to matching pair
|
|
save_dot = dot; // remember where we are
|
|
dot = q; // go to new loc
|
|
refresh(FALSE); // let the user see it
|
|
(void) mysleep(40); // give user some time
|
|
dot = save_dot; // go back to old loc
|
|
refresh(FALSE);
|
|
}
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_SETOPTS */
|
|
|
|
// open a hole in text[]
|
|
static Byte *text_hole_make(Byte * p, int size) // at "p", make a 'size' byte hole
|
|
{
|
|
Byte *src, *dest;
|
|
int cnt;
|
|
|
|
if (size <= 0)
|
|
goto thm0;
|
|
src = p;
|
|
dest = p + size;
|
|
cnt = end - src; // the rest of buffer
|
|
if (memmove(dest, src, cnt) != dest) {
|
|
psbs("can't create room for new characters");
|
|
}
|
|
memset(p, ' ', size); // clear new hole
|
|
end = end + size; // adjust the new END
|
|
file_modified++; // has the file been modified
|
|
thm0:
|
|
return (p);
|
|
}
|
|
|
|
// close a hole in text[]
|
|
static Byte *text_hole_delete(Byte * p, Byte * q) // delete "p" thru "q", inclusive
|
|
{
|
|
Byte *src, *dest;
|
|
int cnt, hole_size;
|
|
|
|
// move forwards, from beginning
|
|
// assume p <= q
|
|
src = q + 1;
|
|
dest = p;
|
|
if (q < p) { // they are backward- swap them
|
|
src = p + 1;
|
|
dest = q;
|
|
}
|
|
hole_size = q - p + 1;
|
|
cnt = end - src;
|
|
if (src < text || src > end)
|
|
goto thd0;
|
|
if (dest < text || dest >= end)
|
|
goto thd0;
|
|
if (src >= end)
|
|
goto thd_atend; // just delete the end of the buffer
|
|
if (memmove(dest, src, cnt) != dest) {
|
|
psbs("can't delete the character");
|
|
}
|
|
thd_atend:
|
|
end = end - hole_size; // adjust the new END
|
|
if (dest >= end)
|
|
dest = end - 1; // make sure dest in below end-1
|
|
if (end <= text)
|
|
dest = end = text; // keep pointers valid
|
|
file_modified++; // has the file been modified
|
|
thd0:
|
|
return (dest);
|
|
}
|
|
|
|
// copy text into register, then delete text.
|
|
// if dist <= 0, do not include, or go past, a NewLine
|
|
//
|
|
static Byte *yank_delete(Byte * start, Byte * stop, int dist, int yf)
|
|
{
|
|
Byte *p;
|
|
|
|
// make sure start <= stop
|
|
if (start > stop) {
|
|
// they are backwards, reverse them
|
|
p = start;
|
|
start = stop;
|
|
stop = p;
|
|
}
|
|
if (dist <= 0) {
|
|
// we can not cross NL boundaries
|
|
p = start;
|
|
if (*p == '\n')
|
|
return (p);
|
|
// dont go past a NewLine
|
|
for (; p + 1 <= stop; p++) {
|
|
if (p[1] == '\n') {
|
|
stop = p; // "stop" just before NewLine
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
p = start;
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
text_yank(start, stop, YDreg);
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
if (yf == YANKDEL) {
|
|
p = text_hole_delete(start, stop);
|
|
} // delete lines
|
|
return (p);
|
|
}
|
|
|
|
static void show_help(void)
|
|
{
|
|
puts("These features are available:"
|
|
#ifdef CONFIG_FEATURE_VI_SEARCH
|
|
"\n\tPattern searches with / and ?"
|
|
#endif /* CONFIG_FEATURE_VI_SEARCH */
|
|
#ifdef CONFIG_FEATURE_VI_DOT_CMD
|
|
"\n\tLast command repeat with \'.\'"
|
|
#endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
"\n\tLine marking with 'x"
|
|
"\n\tNamed buffers with \"x"
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
"\n\tReadonly if vi is called as \"view\""
|
|
"\n\tReadonly with -R command line arg"
|
|
#endif /* CONFIG_FEATURE_VI_READONLY */
|
|
#ifdef CONFIG_FEATURE_VI_SET
|
|
"\n\tSome colon mode commands with \':\'"
|
|
#endif /* CONFIG_FEATURE_VI_SET */
|
|
#ifdef CONFIG_FEATURE_VI_SETOPTS
|
|
"\n\tSettable options with \":set\""
|
|
#endif /* CONFIG_FEATURE_VI_SETOPTS */
|
|
#ifdef CONFIG_FEATURE_VI_USE_SIGNALS
|
|
"\n\tSignal catching- ^C"
|
|
"\n\tJob suspend and resume with ^Z"
|
|
#endif /* CONFIG_FEATURE_VI_USE_SIGNALS */
|
|
#ifdef CONFIG_FEATURE_VI_WIN_RESIZE
|
|
"\n\tAdapt to window re-sizes"
|
|
#endif /* CONFIG_FEATURE_VI_WIN_RESIZE */
|
|
);
|
|
}
|
|
|
|
static inline void print_literal(Byte * buf, Byte * s) // copy s to buf, convert unprintable
|
|
{
|
|
Byte c, b[2];
|
|
|
|
b[1] = '\0';
|
|
strcpy((char *) buf, ""); // init buf
|
|
if (strlen((char *) s) <= 0)
|
|
s = (Byte *) "(NULL)";
|
|
for (; *s > '\0'; s++) {
|
|
int c_is_no_print;
|
|
|
|
c = *s;
|
|
c_is_no_print = c > 127 && !Isprint(c);
|
|
if (c_is_no_print) {
|
|
strcat((char *) buf, SOn);
|
|
c = '.';
|
|
}
|
|
if (c < ' ' || c == 127) {
|
|
strcat((char *) buf, "^");
|
|
if(c == 127)
|
|
c = '?';
|
|
else
|
|
c += '@';
|
|
}
|
|
b[0] = c;
|
|
strcat((char *) buf, (char *) b);
|
|
if (c_is_no_print)
|
|
strcat((char *) buf, SOs);
|
|
if (*s == '\n') {
|
|
strcat((char *) buf, "$");
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_FEATURE_VI_DOT_CMD
|
|
static void start_new_cmd_q(Byte c)
|
|
{
|
|
// release old cmd
|
|
free(last_modifying_cmd);
|
|
// get buffer for new cmd
|
|
last_modifying_cmd = (Byte *) xmalloc(BUFSIZ);
|
|
memset(last_modifying_cmd, '\0', BUFSIZ); // clear new cmd queue
|
|
// if there is a current cmd count put it in the buffer first
|
|
if (cmdcnt > 0)
|
|
sprintf((char *) last_modifying_cmd, "%d", cmdcnt);
|
|
// save char c onto queue
|
|
last_modifying_cmd[strlen((char *) last_modifying_cmd)] = c;
|
|
adding2q = 1;
|
|
return;
|
|
}
|
|
|
|
static void end_cmd_q(void)
|
|
{
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
YDreg = 26; // go back to default Yank/Delete reg
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
adding2q = 0;
|
|
return;
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
|
|
|
#if defined(CONFIG_FEATURE_VI_YANKMARK) || defined(CONFIG_FEATURE_VI_COLON) || defined(CONFIG_FEATURE_VI_CRASHME)
|
|
static Byte *string_insert(Byte * p, Byte * s) // insert the string at 'p'
|
|
{
|
|
int cnt, i;
|
|
|
|
i = strlen((char *) s);
|
|
p = text_hole_make(p, i);
|
|
strncpy((char *) p, (char *) s, i);
|
|
for (cnt = 0; *s != '\0'; s++) {
|
|
if (*s == '\n')
|
|
cnt++;
|
|
}
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
psb("Put %d lines (%d chars) from [%c]", cnt, i, what_reg());
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
return (p);
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK || CONFIG_FEATURE_VI_COLON || CONFIG_FEATURE_VI_CRASHME */
|
|
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
static Byte *text_yank(Byte * p, Byte * q, int dest) // copy text into a register
|
|
{
|
|
Byte *t;
|
|
int cnt;
|
|
|
|
if (q < p) { // they are backwards- reverse them
|
|
t = q;
|
|
q = p;
|
|
p = t;
|
|
}
|
|
cnt = q - p + 1;
|
|
t = reg[dest];
|
|
free(t); // if already a yank register, free it
|
|
t = (Byte *) xmalloc(cnt + 1); // get a new register
|
|
memset(t, '\0', cnt + 1); // clear new text[]
|
|
strncpy((char *) t, (char *) p, cnt); // copy text[] into bufer
|
|
reg[dest] = t;
|
|
return (p);
|
|
}
|
|
|
|
static Byte what_reg(void)
|
|
{
|
|
Byte c;
|
|
int i;
|
|
|
|
i = 0;
|
|
c = 'D'; // default to D-reg
|
|
if (0 <= YDreg && YDreg <= 25)
|
|
c = 'a' + (Byte) YDreg;
|
|
if (YDreg == 26)
|
|
c = 'D';
|
|
if (YDreg == 27)
|
|
c = 'U';
|
|
return (c);
|
|
}
|
|
|
|
static void check_context(Byte cmd)
|
|
{
|
|
// A context is defined to be "modifying text"
|
|
// Any modifying command establishes a new context.
|
|
|
|
if (dot < context_start || dot > context_end) {
|
|
if (strchr((char *) modifying_cmds, cmd) != NULL) {
|
|
// we are trying to modify text[]- make this the current context
|
|
mark[27] = mark[26]; // move cur to prev
|
|
mark[26] = dot; // move local to cur
|
|
context_start = prev_line(prev_line(dot));
|
|
context_end = next_line(next_line(dot));
|
|
//loiter= start_loiter= now;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
static inline Byte *swap_context(Byte * p) // goto new context for '' command make this the current context
|
|
{
|
|
Byte *tmp;
|
|
|
|
// the current context is in mark[26]
|
|
// the previous context is in mark[27]
|
|
// only swap context if other context is valid
|
|
if (text <= mark[27] && mark[27] <= end - 1) {
|
|
tmp = mark[27];
|
|
mark[27] = mark[26];
|
|
mark[26] = tmp;
|
|
p = mark[26]; // where we are going- previous context
|
|
context_start = prev_line(prev_line(prev_line(p)));
|
|
context_end = next_line(next_line(next_line(p)));
|
|
}
|
|
return (p);
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
|
|
static int isblnk(Byte c) // is the char a blank or tab
|
|
{
|
|
return (c == ' ' || c == '\t');
|
|
}
|
|
|
|
//----- Set terminal attributes --------------------------------
|
|
static void rawmode(void)
|
|
{
|
|
tcgetattr(0, &term_orig);
|
|
term_vi = term_orig;
|
|
term_vi.c_lflag &= (~ICANON & ~ECHO); // leave ISIG ON- allow intr's
|
|
term_vi.c_iflag &= (~IXON & ~ICRNL);
|
|
term_vi.c_oflag &= (~ONLCR);
|
|
term_vi.c_cc[VMIN] = 1;
|
|
term_vi.c_cc[VTIME] = 0;
|
|
erase_char = term_vi.c_cc[VERASE];
|
|
tcsetattr(0, TCSANOW, &term_vi);
|
|
}
|
|
|
|
static void cookmode(void)
|
|
{
|
|
fflush(stdout);
|
|
tcsetattr(0, TCSANOW, &term_orig);
|
|
}
|
|
|
|
//----- Come here when we get a window resize signal ---------
|
|
#ifdef CONFIG_FEATURE_VI_USE_SIGNALS
|
|
static void winch_sig(int sig)
|
|
{
|
|
signal(SIGWINCH, winch_sig);
|
|
#ifdef CONFIG_FEATURE_VI_WIN_RESIZE
|
|
window_size_get(0);
|
|
#endif /* CONFIG_FEATURE_VI_WIN_RESIZE */
|
|
new_screen(rows, columns); // get memory for virtual screen
|
|
redraw(TRUE); // re-draw the screen
|
|
}
|
|
|
|
//----- Come here when we get a continue signal -------------------
|
|
static void cont_sig(int sig)
|
|
{
|
|
rawmode(); // terminal to "raw"
|
|
last_status_cksum = 0; // force status update
|
|
redraw(TRUE); // re-draw the screen
|
|
|
|
signal(SIGTSTP, suspend_sig);
|
|
signal(SIGCONT, SIG_DFL);
|
|
kill(my_pid, SIGCONT);
|
|
}
|
|
|
|
//----- Come here when we get a Suspend signal -------------------
|
|
static void suspend_sig(int sig)
|
|
{
|
|
place_cursor(rows - 1, 0, FALSE); // go to bottom of screen
|
|
clear_to_eol(); // Erase to end of line
|
|
cookmode(); // terminal to "cooked"
|
|
|
|
signal(SIGCONT, cont_sig);
|
|
signal(SIGTSTP, SIG_DFL);
|
|
kill(my_pid, SIGTSTP);
|
|
}
|
|
|
|
//----- Come here when we get a signal ---------------------------
|
|
static void catch_sig(int sig)
|
|
{
|
|
signal(SIGHUP, catch_sig);
|
|
signal(SIGINT, catch_sig);
|
|
signal(SIGTERM, catch_sig);
|
|
signal(SIGALRM, catch_sig);
|
|
if(sig)
|
|
longjmp(restart, sig);
|
|
}
|
|
|
|
//----- Come here when we get a core dump signal -----------------
|
|
static void core_sig(int sig)
|
|
{
|
|
signal(SIGQUIT, core_sig);
|
|
signal(SIGILL, core_sig);
|
|
signal(SIGTRAP, core_sig);
|
|
signal(SIGIOT, core_sig);
|
|
signal(SIGABRT, core_sig);
|
|
signal(SIGFPE, core_sig);
|
|
signal(SIGBUS, core_sig);
|
|
signal(SIGSEGV, core_sig);
|
|
#ifdef SIGSYS
|
|
signal(SIGSYS, core_sig);
|
|
#endif
|
|
|
|
if(sig) { // signaled
|
|
dot = bound_dot(dot); // make sure "dot" is valid
|
|
|
|
longjmp(restart, sig);
|
|
}
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_USE_SIGNALS */
|
|
|
|
static int mysleep(int hund) // sleep for 'h' 1/100 seconds
|
|
{
|
|
// Don't hang- Wait 5/100 seconds- 1 Sec= 1000000
|
|
fflush(stdout);
|
|
FD_ZERO(&rfds);
|
|
FD_SET(0, &rfds);
|
|
tv.tv_sec = 0;
|
|
tv.tv_usec = hund * 10000;
|
|
select(1, &rfds, NULL, NULL, &tv);
|
|
return (FD_ISSET(0, &rfds));
|
|
}
|
|
|
|
static Byte readbuffer[BUFSIZ];
|
|
static int readed_for_parse;
|
|
|
|
//----- IO Routines --------------------------------------------
|
|
static Byte readit(void) // read (maybe cursor) key from stdin
|
|
{
|
|
Byte c;
|
|
int n;
|
|
struct esc_cmds {
|
|
const char *seq;
|
|
Byte val;
|
|
};
|
|
|
|
static const struct esc_cmds esccmds[] = {
|
|
{"OA", (Byte) VI_K_UP}, // cursor key Up
|
|
{"OB", (Byte) VI_K_DOWN}, // cursor key Down
|
|
{"OC", (Byte) VI_K_RIGHT}, // Cursor Key Right
|
|
{"OD", (Byte) VI_K_LEFT}, // cursor key Left
|
|
{"OH", (Byte) VI_K_HOME}, // Cursor Key Home
|
|
{"OF", (Byte) VI_K_END}, // Cursor Key End
|
|
{"[A", (Byte) VI_K_UP}, // cursor key Up
|
|
{"[B", (Byte) VI_K_DOWN}, // cursor key Down
|
|
{"[C", (Byte) VI_K_RIGHT}, // Cursor Key Right
|
|
{"[D", (Byte) VI_K_LEFT}, // cursor key Left
|
|
{"[H", (Byte) VI_K_HOME}, // Cursor Key Home
|
|
{"[F", (Byte) VI_K_END}, // Cursor Key End
|
|
{"[1~", (Byte) VI_K_HOME}, // Cursor Key Home
|
|
{"[2~", (Byte) VI_K_INSERT}, // Cursor Key Insert
|
|
{"[4~", (Byte) VI_K_END}, // Cursor Key End
|
|
{"[5~", (Byte) VI_K_PAGEUP}, // Cursor Key Page Up
|
|
{"[6~", (Byte) VI_K_PAGEDOWN}, // Cursor Key Page Down
|
|
{"OP", (Byte) VI_K_FUN1}, // Function Key F1
|
|
{"OQ", (Byte) VI_K_FUN2}, // Function Key F2
|
|
{"OR", (Byte) VI_K_FUN3}, // Function Key F3
|
|
{"OS", (Byte) VI_K_FUN4}, // Function Key F4
|
|
{"[15~", (Byte) VI_K_FUN5}, // Function Key F5
|
|
{"[17~", (Byte) VI_K_FUN6}, // Function Key F6
|
|
{"[18~", (Byte) VI_K_FUN7}, // Function Key F7
|
|
{"[19~", (Byte) VI_K_FUN8}, // Function Key F8
|
|
{"[20~", (Byte) VI_K_FUN9}, // Function Key F9
|
|
{"[21~", (Byte) VI_K_FUN10}, // Function Key F10
|
|
{"[23~", (Byte) VI_K_FUN11}, // Function Key F11
|
|
{"[24~", (Byte) VI_K_FUN12}, // Function Key F12
|
|
{"[11~", (Byte) VI_K_FUN1}, // Function Key F1
|
|
{"[12~", (Byte) VI_K_FUN2}, // Function Key F2
|
|
{"[13~", (Byte) VI_K_FUN3}, // Function Key F3
|
|
{"[14~", (Byte) VI_K_FUN4}, // Function Key F4
|
|
};
|
|
|
|
#define ESCCMDS_COUNT (sizeof(esccmds)/sizeof(struct esc_cmds))
|
|
|
|
(void) alarm(0); // turn alarm OFF while we wait for input
|
|
fflush(stdout);
|
|
n = readed_for_parse;
|
|
// get input from User- are there already input chars in Q?
|
|
if (n <= 0) {
|
|
ri0:
|
|
// the Q is empty, wait for a typed char
|
|
n = read(0, readbuffer, BUFSIZ - 1);
|
|
if (n < 0) {
|
|
if (errno == EINTR)
|
|
goto ri0; // interrupted sys call
|
|
if (errno == EBADF)
|
|
editing = 0;
|
|
if (errno == EFAULT)
|
|
editing = 0;
|
|
if (errno == EINVAL)
|
|
editing = 0;
|
|
if (errno == EIO)
|
|
editing = 0;
|
|
errno = 0;
|
|
}
|
|
if(n <= 0)
|
|
return 0; // error
|
|
if (readbuffer[0] == 27) {
|
|
// This is an ESC char. Is this Esc sequence?
|
|
// Could be bare Esc key. See if there are any
|
|
// more chars to read after the ESC. This would
|
|
// be a Function or Cursor Key sequence.
|
|
FD_ZERO(&rfds);
|
|
FD_SET(0, &rfds);
|
|
tv.tv_sec = 0;
|
|
tv.tv_usec = 50000; // Wait 5/100 seconds- 1 Sec=1000000
|
|
|
|
// keep reading while there are input chars and room in buffer
|
|
while (select(1, &rfds, NULL, NULL, &tv) > 0 && n <= (BUFSIZ - 5)) {
|
|
// read the rest of the ESC string
|
|
int r = read(0, (void *) (readbuffer + n), BUFSIZ - n);
|
|
if (r > 0) {
|
|
n += r;
|
|
}
|
|
}
|
|
}
|
|
readed_for_parse = n;
|
|
}
|
|
c = readbuffer[0];
|
|
if(c == 27 && n > 1) {
|
|
// Maybe cursor or function key?
|
|
const struct esc_cmds *eindex;
|
|
|
|
for (eindex = esccmds; eindex < &esccmds[ESCCMDS_COUNT]; eindex++) {
|
|
int cnt = strlen(eindex->seq);
|
|
|
|
if(n <= cnt)
|
|
continue;
|
|
if(strncmp(eindex->seq, (char *) readbuffer + 1, cnt))
|
|
continue;
|
|
// is a Cursor key- put derived value back into Q
|
|
c = eindex->val;
|
|
// for squeeze out the ESC sequence
|
|
n = cnt + 1;
|
|
break;
|
|
}
|
|
if(eindex == &esccmds[ESCCMDS_COUNT]) {
|
|
/* defined ESC sequence not found, set only one ESC */
|
|
n = 1;
|
|
}
|
|
} else {
|
|
n = 1;
|
|
}
|
|
// remove key sequence from Q
|
|
readed_for_parse -= n;
|
|
memmove(readbuffer, readbuffer + n, BUFSIZ - n);
|
|
(void) alarm(3); // we are done waiting for input, turn alarm ON
|
|
return (c);
|
|
}
|
|
|
|
//----- IO Routines --------------------------------------------
|
|
static Byte get_one_char(void)
|
|
{
|
|
static Byte c;
|
|
|
|
#ifdef CONFIG_FEATURE_VI_DOT_CMD
|
|
// ! adding2q && ioq == 0 read()
|
|
// ! adding2q && ioq != 0 *ioq
|
|
// adding2q *last_modifying_cmd= read()
|
|
if (!adding2q) {
|
|
// we are not adding to the q.
|
|
// but, we may be reading from a q
|
|
if (ioq == 0) {
|
|
// there is no current q, read from STDIN
|
|
c = readit(); // get the users input
|
|
} else {
|
|
// there is a queue to get chars from first
|
|
c = *ioq++;
|
|
if (c == '\0') {
|
|
// the end of the q, read from STDIN
|
|
free(ioq_start);
|
|
ioq_start = ioq = 0;
|
|
c = readit(); // get the users input
|
|
}
|
|
}
|
|
} else {
|
|
// adding STDIN chars to q
|
|
c = readit(); // get the users input
|
|
if (last_modifying_cmd != 0) {
|
|
int len = strlen((char *) last_modifying_cmd);
|
|
if (len + 1 >= BUFSIZ) {
|
|
psbs("last_modifying_cmd overrun");
|
|
} else {
|
|
// add new char to q
|
|
last_modifying_cmd[len] = c;
|
|
}
|
|
}
|
|
}
|
|
#else /* CONFIG_FEATURE_VI_DOT_CMD */
|
|
c = readit(); // get the users input
|
|
#endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
|
return (c); // return the char, where ever it came from
|
|
}
|
|
|
|
static Byte *get_input_line(Byte * prompt) // get input line- use "status line"
|
|
{
|
|
Byte buf[BUFSIZ];
|
|
Byte c;
|
|
int i;
|
|
static Byte *obufp = NULL;
|
|
|
|
strcpy((char *) buf, (char *) prompt);
|
|
last_status_cksum = 0; // force status update
|
|
place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen
|
|
clear_to_eol(); // clear the line
|
|
write1(prompt); // write out the :, /, or ? prompt
|
|
|
|
for (i = strlen((char *) buf); i < BUFSIZ;) {
|
|
c = get_one_char(); // read user input
|
|
if (c == '\n' || c == '\r' || c == 27)
|
|
break; // is this end of input
|
|
if (c == erase_char || c == 8 || c == 127) {
|
|
// user wants to erase prev char
|
|
i--; // backup to prev char
|
|
buf[i] = '\0'; // erase the char
|
|
buf[i + 1] = '\0'; // null terminate buffer
|
|
write1("\b \b"); // erase char on screen
|
|
if (i <= 0) { // user backs up before b-o-l, exit
|
|
break;
|
|
}
|
|
} else {
|
|
buf[i] = c; // save char in buffer
|
|
buf[i + 1] = '\0'; // make sure buffer is null terminated
|
|
putchar(c); // echo the char back to user
|
|
i++;
|
|
}
|
|
}
|
|
refresh(FALSE);
|
|
free(obufp);
|
|
obufp = (Byte *) bb_xstrdup((char *) buf);
|
|
return (obufp);
|
|
}
|
|
|
|
static int file_size(const Byte * fn) // what is the byte size of "fn"
|
|
{
|
|
struct stat st_buf;
|
|
int cnt, sr;
|
|
|
|
if (fn == 0 || strlen(fn) <= 0)
|
|
return (-1);
|
|
cnt = -1;
|
|
sr = stat((char *) fn, &st_buf); // see if file exists
|
|
if (sr >= 0) {
|
|
cnt = (int) st_buf.st_size;
|
|
}
|
|
return (cnt);
|
|
}
|
|
|
|
static int file_insert(Byte * fn, Byte * p, int size)
|
|
{
|
|
int fd, cnt;
|
|
|
|
cnt = -1;
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
readonly = FALSE;
|
|
#endif /* CONFIG_FEATURE_VI_READONLY */
|
|
if (fn == 0 || strlen((char*) fn) <= 0) {
|
|
psbs("No filename given");
|
|
goto fi0;
|
|
}
|
|
if (size == 0) {
|
|
// OK- this is just a no-op
|
|
cnt = 0;
|
|
goto fi0;
|
|
}
|
|
if (size < 0) {
|
|
psbs("Trying to insert a negative number (%d) of characters", size);
|
|
goto fi0;
|
|
}
|
|
if (p < text || p > end) {
|
|
psbs("Trying to insert file outside of memory");
|
|
goto fi0;
|
|
}
|
|
|
|
// see if we can open the file
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
if (vi_readonly) goto fi1; // do not try write-mode
|
|
#endif
|
|
fd = open((char *) fn, O_RDWR); // assume read & write
|
|
if (fd < 0) {
|
|
// could not open for writing- maybe file is read only
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
fi1:
|
|
#endif
|
|
fd = open((char *) fn, O_RDONLY); // try read-only
|
|
if (fd < 0) {
|
|
psbs("\"%s\" %s", fn, "could not open file");
|
|
goto fi0;
|
|
}
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
// got the file- read-only
|
|
readonly = TRUE;
|
|
#endif /* CONFIG_FEATURE_VI_READONLY */
|
|
}
|
|
p = text_hole_make(p, size);
|
|
cnt = read(fd, p, size);
|
|
close(fd);
|
|
if (cnt < 0) {
|
|
cnt = -1;
|
|
p = text_hole_delete(p, p + size - 1); // un-do buffer insert
|
|
psbs("could not read file \"%s\"", fn);
|
|
} else if (cnt < size) {
|
|
// There was a partial read, shrink unused space text[]
|
|
p = text_hole_delete(p + cnt, p + (size - cnt) - 1); // un-do buffer insert
|
|
psbs("could not read all of file \"%s\"", fn);
|
|
}
|
|
if (cnt >= size)
|
|
file_modified++;
|
|
fi0:
|
|
return (cnt);
|
|
}
|
|
|
|
static int file_write(Byte * fn, Byte * first, Byte * last)
|
|
{
|
|
int fd, cnt, charcnt;
|
|
|
|
if (fn == 0) {
|
|
psbs("No current filename");
|
|
return (-1);
|
|
}
|
|
charcnt = 0;
|
|
// FIXIT- use the correct umask()
|
|
fd = open((char *) fn, (O_WRONLY | O_CREAT | O_TRUNC), 0664);
|
|
if (fd < 0)
|
|
return (-1);
|
|
cnt = last - first + 1;
|
|
charcnt = write(fd, first, cnt);
|
|
if (charcnt == cnt) {
|
|
// good write
|
|
//file_modified= FALSE; // the file has not been modified
|
|
} else {
|
|
charcnt = 0;
|
|
}
|
|
close(fd);
|
|
return (charcnt);
|
|
}
|
|
|
|
//----- Terminal Drawing ---------------------------------------
|
|
// The terminal is made up of 'rows' line of 'columns' columns.
|
|
// classically this would be 24 x 80.
|
|
// screen coordinates
|
|
// 0,0 ... 0,79
|
|
// 1,0 ... 1,79
|
|
// . ... .
|
|
// . ... .
|
|
// 22,0 ... 22,79
|
|
// 23,0 ... 23,79 status line
|
|
//
|
|
|
|
//----- Move the cursor to row x col (count from 0, not 1) -------
|
|
static void place_cursor(int row, int col, int opti)
|
|
{
|
|
char cm1[BUFSIZ];
|
|
char *cm;
|
|
#ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR
|
|
char cm2[BUFSIZ];
|
|
Byte *screenp;
|
|
// char cm3[BUFSIZ];
|
|
int Rrow= last_row;
|
|
#endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
|
|
|
|
memset(cm1, '\0', BUFSIZ - 1); // clear the buffer
|
|
|
|
if (row < 0) row = 0;
|
|
if (row >= rows) row = rows - 1;
|
|
if (col < 0) col = 0;
|
|
if (col >= columns) col = columns - 1;
|
|
|
|
//----- 1. Try the standard terminal ESC sequence
|
|
sprintf((char *) cm1, CMrc, row + 1, col + 1);
|
|
cm= cm1;
|
|
if (! opti) goto pc0;
|
|
|
|
#ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR
|
|
//----- find the minimum # of chars to move cursor -------------
|
|
//----- 2. Try moving with discreet chars (Newline, [back]space, ...)
|
|
memset(cm2, '\0', BUFSIZ - 1); // clear the buffer
|
|
|
|
// move to the correct row
|
|
while (row < Rrow) {
|
|
// the cursor has to move up
|
|
strcat(cm2, CMup);
|
|
Rrow--;
|
|
}
|
|
while (row > Rrow) {
|
|
// the cursor has to move down
|
|
strcat(cm2, CMdown);
|
|
Rrow++;
|
|
}
|
|
|
|
// now move to the correct column
|
|
strcat(cm2, "\r"); // start at col 0
|
|
// just send out orignal source char to get to correct place
|
|
screenp = &screen[row * columns]; // start of screen line
|
|
strncat(cm2, screenp, col);
|
|
|
|
//----- 3. Try some other way of moving cursor
|
|
//---------------------------------------------
|
|
|
|
// pick the shortest cursor motion to send out
|
|
cm= cm1;
|
|
if (strlen(cm2) < strlen(cm)) {
|
|
cm= cm2;
|
|
} /* else if (strlen(cm3) < strlen(cm)) {
|
|
cm= cm3;
|
|
} */
|
|
#endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
|
|
pc0:
|
|
write1(cm); // move the cursor
|
|
}
|
|
|
|
//----- Erase from cursor to end of line -----------------------
|
|
static void clear_to_eol(void)
|
|
{
|
|
write1(Ceol); // Erase from cursor to end of line
|
|
}
|
|
|
|
//----- Erase from cursor to end of screen -----------------------
|
|
static void clear_to_eos(void)
|
|
{
|
|
write1(Ceos); // Erase from cursor to end of screen
|
|
}
|
|
|
|
//----- Start standout mode ------------------------------------
|
|
static void standout_start(void) // send "start reverse video" sequence
|
|
{
|
|
write1(SOs); // Start reverse video mode
|
|
}
|
|
|
|
//----- End standout mode --------------------------------------
|
|
static void standout_end(void) // send "end reverse video" sequence
|
|
{
|
|
write1(SOn); // End reverse video mode
|
|
}
|
|
|
|
//----- Flash the screen --------------------------------------
|
|
static void flash(int h)
|
|
{
|
|
standout_start(); // send "start reverse video" sequence
|
|
redraw(TRUE);
|
|
(void) mysleep(h);
|
|
standout_end(); // send "end reverse video" sequence
|
|
redraw(TRUE);
|
|
}
|
|
|
|
static void Indicate_Error(void)
|
|
{
|
|
#ifdef CONFIG_FEATURE_VI_CRASHME
|
|
if (crashme > 0)
|
|
return; // generate a random command
|
|
#endif /* CONFIG_FEATURE_VI_CRASHME */
|
|
if (!err_method) {
|
|
write1(bell); // send out a bell character
|
|
} else {
|
|
flash(10);
|
|
}
|
|
}
|
|
|
|
//----- Screen[] Routines --------------------------------------
|
|
//----- Erase the Screen[] memory ------------------------------
|
|
static void screen_erase(void)
|
|
{
|
|
memset(screen, ' ', screensize); // clear new screen
|
|
}
|
|
|
|
static int bufsum(char *buf, int count)
|
|
{
|
|
int sum = 0;
|
|
char *e = buf + count;
|
|
while (buf < e)
|
|
sum += *buf++;
|
|
return sum;
|
|
}
|
|
|
|
//----- Draw the status line at bottom of the screen -------------
|
|
static void show_status_line(void)
|
|
{
|
|
int cnt, cksum;
|
|
|
|
// either we already have an error or status message, or we
|
|
// create one.
|
|
if (!have_status_msg) {
|
|
cnt = format_edit_status();
|
|
cksum = bufsum(status_buffer, cnt);
|
|
}
|
|
if (have_status_msg || ((cnt > 0 && last_status_cksum != cksum))) {
|
|
last_status_cksum= cksum; // remember if we have seen this line
|
|
place_cursor(rows - 1, 0, FALSE); // put cursor on status line
|
|
write1(status_buffer);
|
|
clear_to_eol();
|
|
if (have_status_msg) {
|
|
if ((strlen(status_buffer) - (have_status_msg - 1)) >
|
|
(columns - 1) ) {
|
|
have_status_msg = 0;
|
|
Hit_Return();
|
|
}
|
|
have_status_msg = 0;
|
|
}
|
|
place_cursor(crow, ccol, FALSE); // put cursor back in correct place
|
|
}
|
|
fflush(stdout);
|
|
}
|
|
|
|
//----- format the status buffer, the bottom line of screen ------
|
|
// format status buffer, with STANDOUT mode
|
|
static void psbs(const char *format, ...)
|
|
{
|
|
va_list args;
|
|
|
|
va_start(args, format);
|
|
strcpy((char *) status_buffer, SOs); // Terminal standout mode on
|
|
vsprintf((char *) status_buffer + strlen((char *) status_buffer), format, args);
|
|
strcat((char *) status_buffer, SOn); // Terminal standout mode off
|
|
va_end(args);
|
|
|
|
have_status_msg = 1 + sizeof(SOs) + sizeof(SOn) - 2;
|
|
|
|
return;
|
|
}
|
|
|
|
// format status buffer
|
|
static void psb(const char *format, ...)
|
|
{
|
|
va_list args;
|
|
|
|
va_start(args, format);
|
|
vsprintf((char *) status_buffer, format, args);
|
|
va_end(args);
|
|
|
|
have_status_msg = 1;
|
|
|
|
return;
|
|
}
|
|
|
|
static void ni(Byte * s) // display messages
|
|
{
|
|
Byte buf[BUFSIZ];
|
|
|
|
print_literal(buf, s);
|
|
psbs("\'%s\' is not implemented", buf);
|
|
}
|
|
|
|
static int format_edit_status(void) // show file status on status line
|
|
{
|
|
int cur, percent, ret, trunc_at;
|
|
static int tot;
|
|
|
|
// file_modified is now a counter rather than a flag. this
|
|
// helps reduce the amount of line counting we need to do.
|
|
// (this will cause a mis-reporting of modified status
|
|
// once every MAXINT editing operations.)
|
|
|
|
// it would be nice to do a similar optimization here -- if
|
|
// we haven't done a motion that could have changed which line
|
|
// we're on, then we shouldn't have to do this count_lines()
|
|
cur = count_lines(text, dot);
|
|
|
|
// reduce counting -- the total lines can't have
|
|
// changed if we haven't done any edits.
|
|
if (file_modified != last_file_modified) {
|
|
tot = cur + count_lines(dot, end - 1) - 1;
|
|
last_file_modified = file_modified;
|
|
}
|
|
|
|
// current line percent
|
|
// ------------- ~~ ----------
|
|
// total lines 100
|
|
if (tot > 0) {
|
|
percent = (100 * cur) / tot;
|
|
} else {
|
|
cur = tot = 0;
|
|
percent = 100;
|
|
}
|
|
|
|
trunc_at = columns < STATUS_BUFFER_LEN-1 ?
|
|
columns : STATUS_BUFFER_LEN-1;
|
|
|
|
ret = snprintf((char *) status_buffer, trunc_at+1,
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
"%c %s%s%s %d/%d %d%%",
|
|
#else
|
|
"%c %s%s %d/%d %d%%",
|
|
#endif
|
|
(cmd_mode ? (cmd_mode == 2 ? 'R':'I'):'-'),
|
|
(cfn != 0 ? (char *) cfn : "No file"),
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
((vi_readonly || readonly) ? " [Read-only]" : ""),
|
|
#endif
|
|
(file_modified ? " [modified]" : ""),
|
|
cur, tot, percent);
|
|
|
|
if (ret >= 0 && ret < trunc_at)
|
|
return ret; /* it all fit */
|
|
|
|
return trunc_at; /* had to truncate */
|
|
}
|
|
|
|
//----- Force refresh of all Lines -----------------------------
|
|
static void redraw(int full_screen)
|
|
{
|
|
place_cursor(0, 0, FALSE); // put cursor in correct place
|
|
clear_to_eos(); // tel terminal to erase display
|
|
screen_erase(); // erase the internal screen buffer
|
|
last_status_cksum = 0; // force status update
|
|
refresh(full_screen); // this will redraw the entire display
|
|
show_status_line();
|
|
}
|
|
|
|
//----- Format a text[] line into a buffer ---------------------
|
|
static void format_line(Byte *dest, Byte *src, int li)
|
|
{
|
|
int co;
|
|
Byte c;
|
|
|
|
for (co= 0; co < MAX_SCR_COLS; co++) {
|
|
c= ' '; // assume blank
|
|
if (li > 0 && co == 0) {
|
|
c = '~'; // not first line, assume Tilde
|
|
}
|
|
// are there chars in text[] and have we gone past the end
|
|
if (text < end && src < end) {
|
|
c = *src++;
|
|
}
|
|
if (c == '\n')
|
|
break;
|
|
if (c > 127 && !Isprint(c)) {
|
|
c = '.';
|
|
}
|
|
if (c < ' ' || c == 127) {
|
|
if (c == '\t') {
|
|
c = ' ';
|
|
// co % 8 != 7
|
|
for (; (co % tabstop) != (tabstop - 1); co++) {
|
|
dest[co] = c;
|
|
}
|
|
} else {
|
|
dest[co++] = '^';
|
|
if(c == 127)
|
|
c = '?';
|
|
else
|
|
c += '@'; // make it visible
|
|
}
|
|
}
|
|
// the co++ is done here so that the column will
|
|
// not be overwritten when we blank-out the rest of line
|
|
dest[co] = c;
|
|
if (src >= end)
|
|
break;
|
|
}
|
|
}
|
|
|
|
//----- Refresh the changed screen lines -----------------------
|
|
// Copy the source line from text[] into the buffer and note
|
|
// if the current screenline is different from the new buffer.
|
|
// If they differ then that line needs redrawing on the terminal.
|
|
//
|
|
static void refresh(int full_screen)
|
|
{
|
|
static int old_offset;
|
|
int li, changed;
|
|
Byte buf[MAX_SCR_COLS];
|
|
Byte *tp, *sp; // pointer into text[] and screen[]
|
|
#ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR
|
|
int last_li= -2; // last line that changed- for optimizing cursor movement
|
|
#endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
|
|
|
|
#ifdef CONFIG_FEATURE_VI_WIN_RESIZE
|
|
window_size_get(0);
|
|
#endif /* CONFIG_FEATURE_VI_WIN_RESIZE */
|
|
sync_cursor(dot, &crow, &ccol); // where cursor will be (on "dot")
|
|
tp = screenbegin; // index into text[] of top line
|
|
|
|
// compare text[] to screen[] and mark screen[] lines that need updating
|
|
for (li = 0; li < rows - 1; li++) {
|
|
int cs, ce; // column start & end
|
|
memset(buf, ' ', MAX_SCR_COLS); // blank-out the buffer
|
|
buf[MAX_SCR_COLS-1] = 0; // NULL terminate the buffer
|
|
// format current text line into buf
|
|
format_line(buf, tp, li);
|
|
|
|
// skip to the end of the current text[] line
|
|
while (tp < end && *tp++ != '\n') /*no-op*/ ;
|
|
|
|
// see if there are any changes between vitual screen and buf
|
|
changed = FALSE; // assume no change
|
|
cs= 0;
|
|
ce= columns-1;
|
|
sp = &screen[li * columns]; // start of screen line
|
|
if (full_screen) {
|
|
// force re-draw of every single column from 0 - columns-1
|
|
goto re0;
|
|
}
|
|
// compare newly formatted buffer with virtual screen
|
|
// look forward for first difference between buf and screen
|
|
for ( ; cs <= ce; cs++) {
|
|
if (buf[cs + offset] != sp[cs]) {
|
|
changed = TRUE; // mark for redraw
|
|
break;
|
|
}
|
|
}
|
|
|
|
// look backward for last difference between buf and screen
|
|
for ( ; ce >= cs; ce--) {
|
|
if (buf[ce + offset] != sp[ce]) {
|
|
changed = TRUE; // mark for redraw
|
|
break;
|
|
}
|
|
}
|
|
// now, cs is index of first diff, and ce is index of last diff
|
|
|
|
// if horz offset has changed, force a redraw
|
|
if (offset != old_offset) {
|
|
re0:
|
|
changed = TRUE;
|
|
}
|
|
|
|
// make a sanity check of columns indexes
|
|
if (cs < 0) cs= 0;
|
|
if (ce > columns-1) ce= columns-1;
|
|
if (cs > ce) { cs= 0; ce= columns-1; }
|
|
// is there a change between vitual screen and buf
|
|
if (changed) {
|
|
// copy changed part of buffer to virtual screen
|
|
memmove(sp+cs, buf+(cs+offset), ce-cs+1);
|
|
|
|
// move cursor to column of first change
|
|
if (offset != old_offset) {
|
|
// opti_cur_move is still too stupid
|
|
// to handle offsets correctly
|
|
place_cursor(li, cs, FALSE);
|
|
} else {
|
|
#ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR
|
|
// if this just the next line
|
|
// try to optimize cursor movement
|
|
// otherwise, use standard ESC sequence
|
|
place_cursor(li, cs, li == (last_li+1) ? TRUE : FALSE);
|
|
last_li= li;
|
|
#else /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
|
|
place_cursor(li, cs, FALSE); // use standard ESC sequence
|
|
#endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
|
|
}
|
|
|
|
// write line out to terminal
|
|
{
|
|
int nic = ce-cs+1;
|
|
char *out = sp+cs;
|
|
|
|
while(nic-- > 0) {
|
|
putchar(*out);
|
|
out++;
|
|
}
|
|
}
|
|
#ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR
|
|
last_row = li;
|
|
#endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR
|
|
place_cursor(crow, ccol, (crow == last_row) ? TRUE : FALSE);
|
|
last_row = crow;
|
|
#else
|
|
place_cursor(crow, ccol, FALSE);
|
|
#endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
|
|
|
|
if (offset != old_offset)
|
|
old_offset = offset;
|
|
}
|
|
|
|
//---------------------------------------------------------------------
|
|
//----- the Ascii Chart -----------------------------------------------
|
|
//
|
|
// 00 nul 01 soh 02 stx 03 etx 04 eot 05 enq 06 ack 07 bel
|
|
// 08 bs 09 ht 0a nl 0b vt 0c np 0d cr 0e so 0f si
|
|
// 10 dle 11 dc1 12 dc2 13 dc3 14 dc4 15 nak 16 syn 17 etb
|
|
// 18 can 19 em 1a sub 1b esc 1c fs 1d gs 1e rs 1f us
|
|
// 20 sp 21 ! 22 " 23 # 24 $ 25 % 26 & 27 '
|
|
// 28 ( 29 ) 2a * 2b + 2c , 2d - 2e . 2f /
|
|
// 30 0 31 1 32 2 33 3 34 4 35 5 36 6 37 7
|
|
// 38 8 39 9 3a : 3b ; 3c < 3d = 3e > 3f ?
|
|
// 40 @ 41 A 42 B 43 C 44 D 45 E 46 F 47 G
|
|
// 48 H 49 I 4a J 4b K 4c L 4d M 4e N 4f O
|
|
// 50 P 51 Q 52 R 53 S 54 T 55 U 56 V 57 W
|
|
// 58 X 59 Y 5a Z 5b [ 5c \ 5d ] 5e ^ 5f _
|
|
// 60 ` 61 a 62 b 63 c 64 d 65 e 66 f 67 g
|
|
// 68 h 69 i 6a j 6b k 6c l 6d m 6e n 6f o
|
|
// 70 p 71 q 72 r 73 s 74 t 75 u 76 v 77 w
|
|
// 78 x 79 y 7a z 7b { 7c | 7d } 7e ~ 7f del
|
|
//---------------------------------------------------------------------
|
|
|
|
//----- Execute a Vi Command -----------------------------------
|
|
static void do_cmd(Byte c)
|
|
{
|
|
Byte c1, *p, *q, *msg, buf[9], *save_dot;
|
|
int cnt, i, j, dir, yf;
|
|
|
|
c1 = c; // quiet the compiler
|
|
cnt = yf = dir = 0; // quiet the compiler
|
|
p = q = save_dot = msg = buf; // quiet the compiler
|
|
memset(buf, '\0', 9); // clear buf
|
|
|
|
show_status_line();
|
|
|
|
/* if this is a cursor key, skip these checks */
|
|
switch (c) {
|
|
case VI_K_UP:
|
|
case VI_K_DOWN:
|
|
case VI_K_LEFT:
|
|
case VI_K_RIGHT:
|
|
case VI_K_HOME:
|
|
case VI_K_END:
|
|
case VI_K_PAGEUP:
|
|
case VI_K_PAGEDOWN:
|
|
goto key_cmd_mode;
|
|
}
|
|
|
|
if (cmd_mode == 2) {
|
|
// flip-flop Insert/Replace mode
|
|
if (c == VI_K_INSERT) goto dc_i;
|
|
// we are 'R'eplacing the current *dot with new char
|
|
if (*dot == '\n') {
|
|
// don't Replace past E-o-l
|
|
cmd_mode = 1; // convert to insert
|
|
} else {
|
|
if (1 <= c || Isprint(c)) {
|
|
if (c != 27)
|
|
dot = yank_delete(dot, dot, 0, YANKDEL); // delete char
|
|
dot = char_insert(dot, c); // insert new char
|
|
}
|
|
goto dc1;
|
|
}
|
|
}
|
|
if (cmd_mode == 1) {
|
|
// hitting "Insert" twice means "R" replace mode
|
|
if (c == VI_K_INSERT) goto dc5;
|
|
// insert the char c at "dot"
|
|
if (1 <= c || Isprint(c)) {
|
|
dot = char_insert(dot, c);
|
|
}
|
|
goto dc1;
|
|
}
|
|
|
|
key_cmd_mode:
|
|
switch (c) {
|
|
//case 0x01: // soh
|
|
//case 0x09: // ht
|
|
//case 0x0b: // vt
|
|
//case 0x0e: // so
|
|
//case 0x0f: // si
|
|
//case 0x10: // dle
|
|
//case 0x11: // dc1
|
|
//case 0x13: // dc3
|
|
#ifdef CONFIG_FEATURE_VI_CRASHME
|
|
case 0x14: // dc4 ctrl-T
|
|
crashme = (crashme == 0) ? 1 : 0;
|
|
break;
|
|
#endif /* CONFIG_FEATURE_VI_CRASHME */
|
|
//case 0x16: // syn
|
|
//case 0x17: // etb
|
|
//case 0x18: // can
|
|
//case 0x1c: // fs
|
|
//case 0x1d: // gs
|
|
//case 0x1e: // rs
|
|
//case 0x1f: // us
|
|
//case '!': // !-
|
|
//case '#': // #-
|
|
//case '&': // &-
|
|
//case '(': // (-
|
|
//case ')': // )-
|
|
//case '*': // *-
|
|
//case ',': // ,-
|
|
//case '=': // =-
|
|
//case '@': // @-
|
|
//case 'F': // F-
|
|
//case 'K': // K-
|
|
//case 'Q': // Q-
|
|
//case 'S': // S-
|
|
//case 'T': // T-
|
|
//case 'V': // V-
|
|
//case '[': // [-
|
|
//case '\\': // \-
|
|
//case ']': // ]-
|
|
//case '_': // _-
|
|
//case '`': // `-
|
|
//case 'g': // g-
|
|
//case 'u': // u- FIXME- there is no undo
|
|
//case 'v': // v-
|
|
default: // unrecognised command
|
|
buf[0] = c;
|
|
buf[1] = '\0';
|
|
if (c < ' ') {
|
|
buf[0] = '^';
|
|
buf[1] = c + '@';
|
|
buf[2] = '\0';
|
|
}
|
|
ni((Byte *) buf);
|
|
end_cmd_q(); // stop adding to q
|
|
case 0x00: // nul- ignore
|
|
break;
|
|
case 2: // ctrl-B scroll up full screen
|
|
case VI_K_PAGEUP: // Cursor Key Page Up
|
|
dot_scroll(rows - 2, -1);
|
|
break;
|
|
#ifdef CONFIG_FEATURE_VI_USE_SIGNALS
|
|
case 0x03: // ctrl-C interrupt
|
|
longjmp(restart, 1);
|
|
break;
|
|
case 26: // ctrl-Z suspend
|
|
suspend_sig(SIGTSTP);
|
|
break;
|
|
#endif /* CONFIG_FEATURE_VI_USE_SIGNALS */
|
|
case 4: // ctrl-D scroll down half screen
|
|
dot_scroll((rows - 2) / 2, 1);
|
|
break;
|
|
case 5: // ctrl-E scroll down one line
|
|
dot_scroll(1, 1);
|
|
break;
|
|
case 6: // ctrl-F scroll down full screen
|
|
case VI_K_PAGEDOWN: // Cursor Key Page Down
|
|
dot_scroll(rows - 2, 1);
|
|
break;
|
|
case 7: // ctrl-G show current status
|
|
last_status_cksum = 0; // force status update
|
|
break;
|
|
case 'h': // h- move left
|
|
case VI_K_LEFT: // cursor key Left
|
|
case 8: // ctrl-H- move left (This may be ERASE char)
|
|
case 127: // DEL- move left (This may be ERASE char)
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd(c);
|
|
} // repeat cnt
|
|
dot_left();
|
|
break;
|
|
case 10: // Newline ^J
|
|
case 'j': // j- goto next line, same col
|
|
case VI_K_DOWN: // cursor key Down
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd(c);
|
|
} // repeat cnt
|
|
dot_next(); // go to next B-o-l
|
|
dot = move_to_col(dot, ccol + offset); // try stay in same col
|
|
break;
|
|
case 12: // ctrl-L force redraw whole screen
|
|
case 18: // ctrl-R force redraw
|
|
place_cursor(0, 0, FALSE); // put cursor in correct place
|
|
clear_to_eos(); // tel terminal to erase display
|
|
(void) mysleep(10);
|
|
screen_erase(); // erase the internal screen buffer
|
|
last_status_cksum = 0; // force status update
|
|
refresh(TRUE); // this will redraw the entire display
|
|
break;
|
|
case 13: // Carriage Return ^M
|
|
case '+': // +- goto next line
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd(c);
|
|
} // repeat cnt
|
|
dot_next();
|
|
dot_skip_over_ws();
|
|
break;
|
|
case 21: // ctrl-U scroll up half screen
|
|
dot_scroll((rows - 2) / 2, -1);
|
|
break;
|
|
case 25: // ctrl-Y scroll up one line
|
|
dot_scroll(1, -1);
|
|
break;
|
|
case 27: // esc
|
|
if (cmd_mode == 0)
|
|
indicate_error(c);
|
|
cmd_mode = 0; // stop insrting
|
|
end_cmd_q();
|
|
last_status_cksum = 0; // force status update
|
|
break;
|
|
case ' ': // move right
|
|
case 'l': // move right
|
|
case VI_K_RIGHT: // Cursor Key Right
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd(c);
|
|
} // repeat cnt
|
|
dot_right();
|
|
break;
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
case '"': // "- name a register to use for Delete/Yank
|
|
c1 = get_one_char();
|
|
c1 = tolower(c1);
|
|
if (islower(c1)) {
|
|
YDreg = c1 - 'a';
|
|
} else {
|
|
indicate_error(c);
|
|
}
|
|
break;
|
|
case '\'': // '- goto a specific mark
|
|
c1 = get_one_char();
|
|
c1 = tolower(c1);
|
|
if (islower(c1)) {
|
|
c1 = c1 - 'a';
|
|
// get the b-o-l
|
|
q = mark[(int) c1];
|
|
if (text <= q && q < end) {
|
|
dot = q;
|
|
dot_begin(); // go to B-o-l
|
|
dot_skip_over_ws();
|
|
}
|
|
} else if (c1 == '\'') { // goto previous context
|
|
dot = swap_context(dot); // swap current and previous context
|
|
dot_begin(); // go to B-o-l
|
|
dot_skip_over_ws();
|
|
} else {
|
|
indicate_error(c);
|
|
}
|
|
break;
|
|
case 'm': // m- Mark a line
|
|
// this is really stupid. If there are any inserts or deletes
|
|
// between text[0] and dot then this mark will not point to the
|
|
// correct location! It could be off by many lines!
|
|
// Well..., at least its quick and dirty.
|
|
c1 = get_one_char();
|
|
c1 = tolower(c1);
|
|
if (islower(c1)) {
|
|
c1 = c1 - 'a';
|
|
// remember the line
|
|
mark[(int) c1] = dot;
|
|
} else {
|
|
indicate_error(c);
|
|
}
|
|
break;
|
|
case 'P': // P- Put register before
|
|
case 'p': // p- put register after
|
|
p = reg[YDreg];
|
|
if (p == 0) {
|
|
psbs("Nothing in register %c", what_reg());
|
|
break;
|
|
}
|
|
// are we putting whole lines or strings
|
|
if (strchr((char *) p, '\n') != NULL) {
|
|
if (c == 'P') {
|
|
dot_begin(); // putting lines- Put above
|
|
}
|
|
if (c == 'p') {
|
|
// are we putting after very last line?
|
|
if (end_line(dot) == (end - 1)) {
|
|
dot = end; // force dot to end of text[]
|
|
} else {
|
|
dot_next(); // next line, then put before
|
|
}
|
|
}
|
|
} else {
|
|
if (c == 'p')
|
|
dot_right(); // move to right, can move to NL
|
|
}
|
|
dot = string_insert(dot, p); // insert the string
|
|
end_cmd_q(); // stop adding to q
|
|
break;
|
|
case 'U': // U- Undo; replace current line with original version
|
|
if (reg[Ureg] != 0) {
|
|
p = begin_line(dot);
|
|
q = end_line(dot);
|
|
p = text_hole_delete(p, q); // delete cur line
|
|
p = string_insert(p, reg[Ureg]); // insert orig line
|
|
dot = p;
|
|
dot_skip_over_ws();
|
|
}
|
|
break;
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
case '$': // $- goto end of line
|
|
case VI_K_END: // Cursor Key End
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd(c);
|
|
} // repeat cnt
|
|
dot = end_line(dot);
|
|
break;
|
|
case '%': // %- find matching char of pair () [] {}
|
|
for (q = dot; q < end && *q != '\n'; q++) {
|
|
if (strchr("()[]{}", *q) != NULL) {
|
|
// we found half of a pair
|
|
p = find_pair(q, *q);
|
|
if (p == NULL) {
|
|
indicate_error(c);
|
|
} else {
|
|
dot = p;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (*q == '\n')
|
|
indicate_error(c);
|
|
break;
|
|
case 'f': // f- forward to a user specified char
|
|
last_forward_char = get_one_char(); // get the search char
|
|
//
|
|
// dont separate these two commands. 'f' depends on ';'
|
|
//
|
|
//**** fall thru to ... ';'
|
|
case ';': // ;- look at rest of line for last forward char
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd(';');
|
|
} // repeat cnt
|
|
if (last_forward_char == 0) break;
|
|
q = dot + 1;
|
|
while (q < end - 1 && *q != '\n' && *q != last_forward_char) {
|
|
q++;
|
|
}
|
|
if (*q == last_forward_char)
|
|
dot = q;
|
|
break;
|
|
case '-': // -- goto prev line
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd(c);
|
|
} // repeat cnt
|
|
dot_prev();
|
|
dot_skip_over_ws();
|
|
break;
|
|
#ifdef CONFIG_FEATURE_VI_DOT_CMD
|
|
case '.': // .- repeat the last modifying command
|
|
// Stuff the last_modifying_cmd back into stdin
|
|
// and let it be re-executed.
|
|
if (last_modifying_cmd != 0) {
|
|
ioq = ioq_start = (Byte *) bb_xstrdup((char *) last_modifying_cmd);
|
|
}
|
|
break;
|
|
#endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
|
#ifdef CONFIG_FEATURE_VI_SEARCH
|
|
case '?': // /- search for a pattern
|
|
case '/': // /- search for a pattern
|
|
buf[0] = c;
|
|
buf[1] = '\0';
|
|
q = get_input_line(buf); // get input line- use "status line"
|
|
if (strlen((char *) q) == 1)
|
|
goto dc3; // if no pat re-use old pat
|
|
if (strlen((char *) q) > 1) { // new pat- save it and find
|
|
// there is a new pat
|
|
free(last_search_pattern);
|
|
last_search_pattern = (Byte *) bb_xstrdup((char *) q);
|
|
goto dc3; // now find the pattern
|
|
}
|
|
// user changed mind and erased the "/"- do nothing
|
|
break;
|
|
case 'N': // N- backward search for last pattern
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd(c);
|
|
} // repeat cnt
|
|
dir = BACK; // assume BACKWARD search
|
|
p = dot - 1;
|
|
if (last_search_pattern[0] == '?') {
|
|
dir = FORWARD;
|
|
p = dot + 1;
|
|
}
|
|
goto dc4; // now search for pattern
|
|
break;
|
|
case 'n': // n- repeat search for last pattern
|
|
// search rest of text[] starting at next char
|
|
// if search fails return orignal "p" not the "p+1" address
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd(c);
|
|
} // repeat cnt
|
|
dc3:
|
|
if (last_search_pattern == 0) {
|
|
msg = (Byte *) "No previous regular expression";
|
|
goto dc2;
|
|
}
|
|
if (last_search_pattern[0] == '/') {
|
|
dir = FORWARD; // assume FORWARD search
|
|
p = dot + 1;
|
|
}
|
|
if (last_search_pattern[0] == '?') {
|
|
dir = BACK;
|
|
p = dot - 1;
|
|
}
|
|
dc4:
|
|
q = char_search(p, last_search_pattern + 1, dir, FULL);
|
|
if (q != NULL) {
|
|
dot = q; // good search, update "dot"
|
|
msg = (Byte *) "";
|
|
goto dc2;
|
|
}
|
|
// no pattern found between "dot" and "end"- continue at top
|
|
p = text;
|
|
if (dir == BACK) {
|
|
p = end - 1;
|
|
}
|
|
q = char_search(p, last_search_pattern + 1, dir, FULL);
|
|
if (q != NULL) { // found something
|
|
dot = q; // found new pattern- goto it
|
|
msg = (Byte *) "search hit BOTTOM, continuing at TOP";
|
|
if (dir == BACK) {
|
|
msg = (Byte *) "search hit TOP, continuing at BOTTOM";
|
|
}
|
|
} else {
|
|
msg = (Byte *) "Pattern not found";
|
|
}
|
|
dc2:
|
|
if (*msg) psbs("%s", msg);
|
|
break;
|
|
case '{': // {- move backward paragraph
|
|
q = char_search(dot, (Byte *) "\n\n", BACK, FULL);
|
|
if (q != NULL) { // found blank line
|
|
dot = next_line(q); // move to next blank line
|
|
}
|
|
break;
|
|
case '}': // }- move forward paragraph
|
|
q = char_search(dot, (Byte *) "\n\n", FORWARD, FULL);
|
|
if (q != NULL) { // found blank line
|
|
dot = next_line(q); // move to next blank line
|
|
}
|
|
break;
|
|
#endif /* CONFIG_FEATURE_VI_SEARCH */
|
|
case '0': // 0- goto begining of line
|
|
case '1': // 1-
|
|
case '2': // 2-
|
|
case '3': // 3-
|
|
case '4': // 4-
|
|
case '5': // 5-
|
|
case '6': // 6-
|
|
case '7': // 7-
|
|
case '8': // 8-
|
|
case '9': // 9-
|
|
if (c == '0' && cmdcnt < 1) {
|
|
dot_begin(); // this was a standalone zero
|
|
} else {
|
|
cmdcnt = cmdcnt * 10 + (c - '0'); // this 0 is part of a number
|
|
}
|
|
break;
|
|
case ':': // :- the colon mode commands
|
|
p = get_input_line((Byte *) ":"); // get input line- use "status line"
|
|
#ifdef CONFIG_FEATURE_VI_COLON
|
|
colon(p); // execute the command
|
|
#else /* CONFIG_FEATURE_VI_COLON */
|
|
if (*p == ':')
|
|
p++; // move past the ':'
|
|
cnt = strlen((char *) p);
|
|
if (cnt <= 0)
|
|
break;
|
|
if (strncasecmp((char *) p, "quit", cnt) == 0 ||
|
|
strncasecmp((char *) p, "q!", cnt) == 0) { // delete lines
|
|
if (file_modified && p[1] != '!') {
|
|
psbs("No write since last change (:quit! overrides)");
|
|
} else {
|
|
editing = 0;
|
|
}
|
|
} else if (strncasecmp((char *) p, "write", cnt) == 0 ||
|
|
strncasecmp((char *) p, "wq", cnt) == 0 ||
|
|
strncasecmp((char *) p, "x", cnt) == 0) {
|
|
cnt = file_write(cfn, text, end - 1);
|
|
file_modified = 0;
|
|
last_file_modified = -1;
|
|
psb("\"%s\" %dL, %dC", cfn, count_lines(text, end - 1), cnt);
|
|
if (p[0] == 'x' || p[1] == 'q') {
|
|
editing = 0;
|
|
}
|
|
} else if (strncasecmp((char *) p, "file", cnt) == 0 ) {
|
|
last_status_cksum = 0; // force status update
|
|
} else if (sscanf((char *) p, "%d", &j) > 0) {
|
|
dot = find_line(j); // go to line # j
|
|
dot_skip_over_ws();
|
|
} else { // unrecognised cmd
|
|
ni((Byte *) p);
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_COLON */
|
|
break;
|
|
case '<': // <- Left shift something
|
|
case '>': // >- Right shift something
|
|
cnt = count_lines(text, dot); // remember what line we are on
|
|
c1 = get_one_char(); // get the type of thing to delete
|
|
find_range(&p, &q, c1);
|
|
(void) yank_delete(p, q, 1, YANKONLY); // save copy before change
|
|
p = begin_line(p);
|
|
q = end_line(q);
|
|
i = count_lines(p, q); // # of lines we are shifting
|
|
for ( ; i > 0; i--, p = next_line(p)) {
|
|
if (c == '<') {
|
|
// shift left- remove tab or 8 spaces
|
|
if (*p == '\t') {
|
|
// shrink buffer 1 char
|
|
(void) text_hole_delete(p, p);
|
|
} else if (*p == ' ') {
|
|
// we should be calculating columns, not just SPACE
|
|
for (j = 0; *p == ' ' && j < tabstop; j++) {
|
|
(void) text_hole_delete(p, p);
|
|
}
|
|
}
|
|
} else if (c == '>') {
|
|
// shift right -- add tab or 8 spaces
|
|
(void) char_insert(p, '\t');
|
|
}
|
|
}
|
|
dot = find_line(cnt); // what line were we on
|
|
dot_skip_over_ws();
|
|
end_cmd_q(); // stop adding to q
|
|
break;
|
|
case 'A': // A- append at e-o-l
|
|
dot_end(); // go to e-o-l
|
|
//**** fall thru to ... 'a'
|
|
case 'a': // a- append after current char
|
|
if (*dot != '\n')
|
|
dot++;
|
|
goto dc_i;
|
|
break;
|
|
case 'B': // B- back a blank-delimited Word
|
|
case 'E': // E- end of a blank-delimited word
|
|
case 'W': // W- forward a blank-delimited word
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd(c);
|
|
} // repeat cnt
|
|
dir = FORWARD;
|
|
if (c == 'B')
|
|
dir = BACK;
|
|
if (c == 'W' || isspace(dot[dir])) {
|
|
dot = skip_thing(dot, 1, dir, S_TO_WS);
|
|
dot = skip_thing(dot, 2, dir, S_OVER_WS);
|
|
}
|
|
if (c != 'W')
|
|
dot = skip_thing(dot, 1, dir, S_BEFORE_WS);
|
|
break;
|
|
case 'C': // C- Change to e-o-l
|
|
case 'D': // D- delete to e-o-l
|
|
save_dot = dot;
|
|
dot = dollar_line(dot); // move to before NL
|
|
// copy text into a register and delete
|
|
dot = yank_delete(save_dot, dot, 0, YANKDEL); // delete to e-o-l
|
|
if (c == 'C')
|
|
goto dc_i; // start inserting
|
|
#ifdef CONFIG_FEATURE_VI_DOT_CMD
|
|
if (c == 'D')
|
|
end_cmd_q(); // stop adding to q
|
|
#endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
|
break;
|
|
case 'G': // G- goto to a line number (default= E-O-F)
|
|
dot = end - 1; // assume E-O-F
|
|
if (cmdcnt > 0) {
|
|
dot = find_line(cmdcnt); // what line is #cmdcnt
|
|
}
|
|
dot_skip_over_ws();
|
|
break;
|
|
case 'H': // H- goto top line on screen
|
|
dot = screenbegin;
|
|
if (cmdcnt > (rows - 1)) {
|
|
cmdcnt = (rows - 1);
|
|
}
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd('+');
|
|
} // repeat cnt
|
|
dot_skip_over_ws();
|
|
break;
|
|
case 'I': // I- insert before first non-blank
|
|
dot_begin(); // 0
|
|
dot_skip_over_ws();
|
|
//**** fall thru to ... 'i'
|
|
case 'i': // i- insert before current char
|
|
case VI_K_INSERT: // Cursor Key Insert
|
|
dc_i:
|
|
cmd_mode = 1; // start insrting
|
|
break;
|
|
case 'J': // J- join current and next lines together
|
|
if (cmdcnt-- > 2) {
|
|
do_cmd(c);
|
|
} // repeat cnt
|
|
dot_end(); // move to NL
|
|
if (dot < end - 1) { // make sure not last char in text[]
|
|
*dot++ = ' '; // replace NL with space
|
|
file_modified++;
|
|
while (isblnk(*dot)) { // delete leading WS
|
|
dot_delete();
|
|
}
|
|
}
|
|
end_cmd_q(); // stop adding to q
|
|
break;
|
|
case 'L': // L- goto bottom line on screen
|
|
dot = end_screen();
|
|
if (cmdcnt > (rows - 1)) {
|
|
cmdcnt = (rows - 1);
|
|
}
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd('-');
|
|
} // repeat cnt
|
|
dot_begin();
|
|
dot_skip_over_ws();
|
|
break;
|
|
case 'M': // M- goto middle line on screen
|
|
dot = screenbegin;
|
|
for (cnt = 0; cnt < (rows-1) / 2; cnt++)
|
|
dot = next_line(dot);
|
|
break;
|
|
case 'O': // O- open a empty line above
|
|
// 0i\n ESC -i
|
|
p = begin_line(dot);
|
|
if (p[-1] == '\n') {
|
|
dot_prev();
|
|
case 'o': // o- open a empty line below; Yes, I know it is in the middle of the "if (..."
|
|
dot_end();
|
|
dot = char_insert(dot, '\n');
|
|
} else {
|
|
dot_begin(); // 0
|
|
dot = char_insert(dot, '\n'); // i\n ESC
|
|
dot_prev(); // -
|
|
}
|
|
goto dc_i;
|
|
break;
|
|
case 'R': // R- continuous Replace char
|
|
dc5:
|
|
cmd_mode = 2;
|
|
break;
|
|
case 'X': // X- delete char before dot
|
|
case 'x': // x- delete the current char
|
|
case 's': // s- substitute the current char
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd(c);
|
|
} // repeat cnt
|
|
dir = 0;
|
|
if (c == 'X')
|
|
dir = -1;
|
|
if (dot[dir] != '\n') {
|
|
if (c == 'X')
|
|
dot--; // delete prev char
|
|
dot = yank_delete(dot, dot, 0, YANKDEL); // delete char
|
|
}
|
|
if (c == 's')
|
|
goto dc_i; // start insrting
|
|
end_cmd_q(); // stop adding to q
|
|
break;
|
|
case 'Z': // Z- if modified, {write}; exit
|
|
// ZZ means to save file (if necessary), then exit
|
|
c1 = get_one_char();
|
|
if (c1 != 'Z') {
|
|
indicate_error(c);
|
|
break;
|
|
}
|
|
if (file_modified
|
|
#ifdef CONFIG_FEATURE_VI_READONLY
|
|
&& ! vi_readonly
|
|
&& ! readonly
|
|
#endif /* CONFIG_FEATURE_VI_READONLY */
|
|
) {
|
|
cnt = file_write(cfn, text, end - 1);
|
|
if (cnt == (end - 1 - text + 1)) {
|
|
editing = 0;
|
|
}
|
|
} else {
|
|
editing = 0;
|
|
}
|
|
break;
|
|
case '^': // ^- move to first non-blank on line
|
|
dot_begin();
|
|
dot_skip_over_ws();
|
|
break;
|
|
case 'b': // b- back a word
|
|
case 'e': // e- end of word
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd(c);
|
|
} // repeat cnt
|
|
dir = FORWARD;
|
|
if (c == 'b')
|
|
dir = BACK;
|
|
if ((dot + dir) < text || (dot + dir) > end - 1)
|
|
break;
|
|
dot += dir;
|
|
if (isspace(*dot)) {
|
|
dot = skip_thing(dot, (c == 'e') ? 2 : 1, dir, S_OVER_WS);
|
|
}
|
|
if (isalnum(*dot) || *dot == '_') {
|
|
dot = skip_thing(dot, 1, dir, S_END_ALNUM);
|
|
} else if (ispunct(*dot)) {
|
|
dot = skip_thing(dot, 1, dir, S_END_PUNCT);
|
|
}
|
|
break;
|
|
case 'c': // c- change something
|
|
case 'd': // d- delete something
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
case 'y': // y- yank something
|
|
case 'Y': // Y- Yank a line
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
yf = YANKDEL; // assume either "c" or "d"
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
if (c == 'y' || c == 'Y')
|
|
yf = YANKONLY;
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
c1 = 'y';
|
|
if (c != 'Y')
|
|
c1 = get_one_char(); // get the type of thing to delete
|
|
find_range(&p, &q, c1);
|
|
if (c1 == 27) { // ESC- user changed mind and wants out
|
|
c = c1 = 27; // Escape- do nothing
|
|
} else if (strchr("wW", c1)) {
|
|
if (c == 'c') {
|
|
// don't include trailing WS as part of word
|
|
while (isblnk(*q)) {
|
|
if (q <= text || q[-1] == '\n')
|
|
break;
|
|
q--;
|
|
}
|
|
}
|
|
dot = yank_delete(p, q, 0, yf); // delete word
|
|
} else if (strchr("^0bBeEft$", c1)) {
|
|
// single line copy text into a register and delete
|
|
dot = yank_delete(p, q, 0, yf); // delete word
|
|
} else if (strchr("cdykjHL%+-{}\r\n", c1)) {
|
|
// multiple line copy text into a register and delete
|
|
dot = yank_delete(p, q, 1, yf); // delete lines
|
|
if (c == 'c') {
|
|
dot = char_insert(dot, '\n');
|
|
// on the last line of file don't move to prev line
|
|
if (dot != (end-1)) {
|
|
dot_prev();
|
|
}
|
|
} else if (c == 'd') {
|
|
dot_begin();
|
|
dot_skip_over_ws();
|
|
}
|
|
} else {
|
|
// could not recognize object
|
|
c = c1 = 27; // error-
|
|
indicate_error(c);
|
|
}
|
|
if (c1 != 27) {
|
|
// if CHANGING, not deleting, start inserting after the delete
|
|
if (c == 'c') {
|
|
strcpy((char *) buf, "Change");
|
|
goto dc_i; // start inserting
|
|
}
|
|
if (c == 'd') {
|
|
strcpy((char *) buf, "Delete");
|
|
}
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
if (c == 'y' || c == 'Y') {
|
|
strcpy((char *) buf, "Yank");
|
|
}
|
|
p = reg[YDreg];
|
|
q = p + strlen((char *) p);
|
|
for (cnt = 0; p <= q; p++) {
|
|
if (*p == '\n')
|
|
cnt++;
|
|
}
|
|
psb("%s %d lines (%d chars) using [%c]",
|
|
buf, cnt, strlen((char *) reg[YDreg]), what_reg());
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
end_cmd_q(); // stop adding to q
|
|
}
|
|
break;
|
|
case 'k': // k- goto prev line, same col
|
|
case VI_K_UP: // cursor key Up
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd(c);
|
|
} // repeat cnt
|
|
dot_prev();
|
|
dot = move_to_col(dot, ccol + offset); // try stay in same col
|
|
break;
|
|
case 'r': // r- replace the current char with user input
|
|
c1 = get_one_char(); // get the replacement char
|
|
if (*dot != '\n') {
|
|
*dot = c1;
|
|
file_modified++; // has the file been modified
|
|
}
|
|
end_cmd_q(); // stop adding to q
|
|
break;
|
|
case 't': // t- move to char prior to next x
|
|
last_forward_char = get_one_char();
|
|
do_cmd(';');
|
|
if (*dot == last_forward_char)
|
|
dot_left();
|
|
last_forward_char= 0;
|
|
break;
|
|
case 'w': // w- forward a word
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd(c);
|
|
} // repeat cnt
|
|
if (isalnum(*dot) || *dot == '_') { // we are on ALNUM
|
|
dot = skip_thing(dot, 1, FORWARD, S_END_ALNUM);
|
|
} else if (ispunct(*dot)) { // we are on PUNCT
|
|
dot = skip_thing(dot, 1, FORWARD, S_END_PUNCT);
|
|
}
|
|
if (dot < end - 1)
|
|
dot++; // move over word
|
|
if (isspace(*dot)) {
|
|
dot = skip_thing(dot, 2, FORWARD, S_OVER_WS);
|
|
}
|
|
break;
|
|
case 'z': // z-
|
|
c1 = get_one_char(); // get the replacement char
|
|
cnt = 0;
|
|
if (c1 == '.')
|
|
cnt = (rows - 2) / 2; // put dot at center
|
|
if (c1 == '-')
|
|
cnt = rows - 2; // put dot at bottom
|
|
screenbegin = begin_line(dot); // start dot at top
|
|
dot_scroll(cnt, -1);
|
|
break;
|
|
case '|': // |- move to column "cmdcnt"
|
|
dot = move_to_col(dot, cmdcnt - 1); // try to move to column
|
|
break;
|
|
case '~': // ~- flip the case of letters a-z -> A-Z
|
|
if (cmdcnt-- > 1) {
|
|
do_cmd(c);
|
|
} // repeat cnt
|
|
if (islower(*dot)) {
|
|
*dot = toupper(*dot);
|
|
file_modified++; // has the file been modified
|
|
} else if (isupper(*dot)) {
|
|
*dot = tolower(*dot);
|
|
file_modified++; // has the file been modified
|
|
}
|
|
dot_right();
|
|
end_cmd_q(); // stop adding to q
|
|
break;
|
|
//----- The Cursor and Function Keys -----------------------------
|
|
case VI_K_HOME: // Cursor Key Home
|
|
dot_begin();
|
|
break;
|
|
// The Fn keys could point to do_macro which could translate them
|
|
case VI_K_FUN1: // Function Key F1
|
|
case VI_K_FUN2: // Function Key F2
|
|
case VI_K_FUN3: // Function Key F3
|
|
case VI_K_FUN4: // Function Key F4
|
|
case VI_K_FUN5: // Function Key F5
|
|
case VI_K_FUN6: // Function Key F6
|
|
case VI_K_FUN7: // Function Key F7
|
|
case VI_K_FUN8: // Function Key F8
|
|
case VI_K_FUN9: // Function Key F9
|
|
case VI_K_FUN10: // Function Key F10
|
|
case VI_K_FUN11: // Function Key F11
|
|
case VI_K_FUN12: // Function Key F12
|
|
break;
|
|
}
|
|
|
|
dc1:
|
|
// if text[] just became empty, add back an empty line
|
|
if (end == text) {
|
|
(void) char_insert(text, '\n'); // start empty buf with dummy line
|
|
dot = text;
|
|
}
|
|
// it is OK for dot to exactly equal to end, otherwise check dot validity
|
|
if (dot != end) {
|
|
dot = bound_dot(dot); // make sure "dot" is valid
|
|
}
|
|
#ifdef CONFIG_FEATURE_VI_YANKMARK
|
|
check_context(c); // update the current context
|
|
#endif /* CONFIG_FEATURE_VI_YANKMARK */
|
|
|
|
if (!isdigit(c))
|
|
cmdcnt = 0; // cmd was not a number, reset cmdcnt
|
|
cnt = dot - begin_line(dot);
|
|
// Try to stay off of the Newline
|
|
if (*dot == '\n' && cnt > 0 && cmd_mode == 0)
|
|
dot--;
|
|
}
|
|
|
|
#ifdef CONFIG_FEATURE_VI_CRASHME
|
|
static int totalcmds = 0;
|
|
static int Mp = 85; // Movement command Probability
|
|
static int Np = 90; // Non-movement command Probability
|
|
static int Dp = 96; // Delete command Probability
|
|
static int Ip = 97; // Insert command Probability
|
|
static int Yp = 98; // Yank command Probability
|
|
static int Pp = 99; // Put command Probability
|
|
static int M = 0, N = 0, I = 0, D = 0, Y = 0, P = 0, U = 0;
|
|
char chars[20] = "\t012345 abcdABCD-=.$";
|
|
char *words[20] = { "this", "is", "a", "test",
|
|
"broadcast", "the", "emergency", "of",
|
|
"system", "quick", "brown", "fox",
|
|
"jumped", "over", "lazy", "dogs",
|
|
"back", "January", "Febuary", "March"
|
|
};
|
|
char *lines[20] = {
|
|
"You should have received a copy of the GNU General Public License\n",
|
|
"char c, cm, *cmd, *cmd1;\n",
|
|
"generate a command by percentages\n",
|
|
"Numbers may be typed as a prefix to some commands.\n",
|
|
"Quit, discarding changes!\n",
|
|
"Forced write, if permission originally not valid.\n",
|
|
"In general, any ex or ed command (such as substitute or delete).\n",
|
|
"I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
|
|
"Please get w/ me and I will go over it with you.\n",
|
|
"The following is a list of scheduled, committed changes.\n",
|
|
"1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
|
|
"Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
|
|
"Any question about transactions please contact Sterling Huxley.\n",
|
|
"I will try to get back to you by Friday, December 31.\n",
|
|
"This Change will be implemented on Friday.\n",
|
|
"Let me know if you have problems accessing this;\n",
|
|
"Sterling Huxley recently added you to the access list.\n",
|
|
"Would you like to go to lunch?\n",
|
|
"The last command will be automatically run.\n",
|
|
"This is too much english for a computer geek.\n",
|
|
};
|
|
char *multilines[20] = {
|
|
"You should have received a copy of the GNU General Public License\n",
|
|
"char c, cm, *cmd, *cmd1;\n",
|
|
"generate a command by percentages\n",
|
|
"Numbers may be typed as a prefix to some commands.\n",
|
|
"Quit, discarding changes!\n",
|
|
"Forced write, if permission originally not valid.\n",
|
|
"In general, any ex or ed command (such as substitute or delete).\n",
|
|
"I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
|
|
"Please get w/ me and I will go over it with you.\n",
|
|
"The following is a list of scheduled, committed changes.\n",
|
|
"1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
|
|
"Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
|
|
"Any question about transactions please contact Sterling Huxley.\n",
|
|
"I will try to get back to you by Friday, December 31.\n",
|
|
"This Change will be implemented on Friday.\n",
|
|
"Let me know if you have problems accessing this;\n",
|
|
"Sterling Huxley recently added you to the access list.\n",
|
|
"Would you like to go to lunch?\n",
|
|
"The last command will be automatically run.\n",
|
|
"This is too much english for a computer geek.\n",
|
|
};
|
|
|
|
// create a random command to execute
|
|
static void crash_dummy()
|
|
{
|
|
static int sleeptime; // how long to pause between commands
|
|
char c, cm, *cmd, *cmd1;
|
|
int i, cnt, thing, rbi, startrbi, percent;
|
|
|
|
// "dot" movement commands
|
|
cmd1 = " \n\r\002\004\005\006\025\0310^$-+wWeEbBhjklHL";
|
|
|
|
// is there already a command running?
|
|
if (readed_for_parse > 0)
|
|
goto cd1;
|
|
cd0:
|
|
startrbi = rbi = 0;
|
|
sleeptime = 0; // how long to pause between commands
|
|
memset(readbuffer, '\0', BUFSIZ); // clear the read buffer
|
|
// generate a command by percentages
|
|
percent = (int) lrand48() % 100; // get a number from 0-99
|
|
if (percent < Mp) { // Movement commands
|
|
// available commands
|
|
cmd = cmd1;
|
|
M++;
|
|
} else if (percent < Np) { // non-movement commands
|
|
cmd = "mz<>\'\""; // available commands
|
|
N++;
|
|
} else if (percent < Dp) { // Delete commands
|
|
cmd = "dx"; // available commands
|
|
D++;
|
|
} else if (percent < Ip) { // Inset commands
|
|
cmd = "iIaAsrJ"; // available commands
|
|
I++;
|
|
} else if (percent < Yp) { // Yank commands
|
|
cmd = "yY"; // available commands
|
|
Y++;
|
|
} else if (percent < Pp) { // Put commands
|
|
cmd = "pP"; // available commands
|
|
P++;
|
|
} else {
|
|
// We do not know how to handle this command, try again
|
|
U++;
|
|
goto cd0;
|
|
}
|
|
// randomly pick one of the available cmds from "cmd[]"
|
|
i = (int) lrand48() % strlen(cmd);
|
|
cm = cmd[i];
|
|
if (strchr(":\024", cm))
|
|
goto cd0; // dont allow colon or ctrl-T commands
|
|
readbuffer[rbi++] = cm; // put cmd into input buffer
|
|
|
|
// now we have the command-
|
|
// there are 1, 2, and multi char commands
|
|
// find out which and generate the rest of command as necessary
|
|
if (strchr("dmryz<>\'\"", cm)) { // 2-char commands
|
|
cmd1 = " \n\r0$^-+wWeEbBhjklHL";
|
|
if (cm == 'm' || cm == '\'' || cm == '\"') { // pick a reg[]
|
|
cmd1 = "abcdefghijklmnopqrstuvwxyz";
|
|
}
|
|
thing = (int) lrand48() % strlen(cmd1); // pick a movement command
|
|
c = cmd1[thing];
|
|
readbuffer[rbi++] = c; // add movement to input buffer
|
|
}
|
|
if (strchr("iIaAsc", cm)) { // multi-char commands
|
|
if (cm == 'c') {
|
|
// change some thing
|
|
thing = (int) lrand48() % strlen(cmd1); // pick a movement command
|
|
c = cmd1[thing];
|
|
readbuffer[rbi++] = c; // add movement to input buffer
|
|
}
|
|
thing = (int) lrand48() % 4; // what thing to insert
|
|
cnt = (int) lrand48() % 10; // how many to insert
|
|
for (i = 0; i < cnt; i++) {
|
|
if (thing == 0) { // insert chars
|
|
readbuffer[rbi++] = chars[((int) lrand48() % strlen(chars))];
|
|
} else if (thing == 1) { // insert words
|
|
strcat((char *) readbuffer, words[(int) lrand48() % 20]);
|
|
strcat((char *) readbuffer, " ");
|
|
sleeptime = 0; // how fast to type
|
|
} else if (thing == 2) { // insert lines
|
|
strcat((char *) readbuffer, lines[(int) lrand48() % 20]);
|
|
sleeptime = 0; // how fast to type
|
|
} else { // insert multi-lines
|
|
strcat((char *) readbuffer, multilines[(int) lrand48() % 20]);
|
|
sleeptime = 0; // how fast to type
|
|
}
|
|
}
|
|
strcat((char *) readbuffer, "\033");
|
|
}
|
|
readed_for_parse = strlen(readbuffer);
|
|
cd1:
|
|
totalcmds++;
|
|
if (sleeptime > 0)
|
|
(void) mysleep(sleeptime); // sleep 1/100 sec
|
|
}
|
|
|
|
// test to see if there are any errors
|
|
static void crash_test()
|
|
{
|
|
static time_t oldtim;
|
|
time_t tim;
|
|
char d[2], msg[BUFSIZ];
|
|
|
|
msg[0] = '\0';
|
|
if (end < text) {
|
|
strcat((char *) msg, "end<text ");
|
|
}
|
|
if (end > textend) {
|
|
strcat((char *) msg, "end>textend ");
|
|
}
|
|
if (dot < text) {
|
|
strcat((char *) msg, "dot<text ");
|
|
}
|
|
if (dot > end) {
|
|
strcat((char *) msg, "dot>end ");
|
|
}
|
|
if (screenbegin < text) {
|
|
strcat((char *) msg, "screenbegin<text ");
|
|
}
|
|
if (screenbegin > end - 1) {
|
|
strcat((char *) msg, "screenbegin>end-1 ");
|
|
}
|
|
|
|
if (strlen(msg) > 0) {
|
|
alarm(0);
|
|
printf("\n\n%d: \'%c\' %s\n\n\n%s[Hit return to continue]%s",
|
|
totalcmds, last_input_char, msg, SOs, SOn);
|
|
fflush(stdout);
|
|
while (read(0, d, 1) > 0) {
|
|
if (d[0] == '\n' || d[0] == '\r')
|
|
break;
|
|
}
|
|
alarm(3);
|
|
}
|
|
tim = (time_t) time((time_t *) 0);
|
|
if (tim >= (oldtim + 3)) {
|
|
sprintf((char *) status_buffer,
|
|
"Tot=%d: M=%d N=%d I=%d D=%d Y=%d P=%d U=%d size=%d",
|
|
totalcmds, M, N, I, D, Y, P, U, end - text + 1);
|
|
oldtim = tim;
|
|
}
|
|
return;
|
|
}
|
|
#endif /* CONFIG_FEATURE_VI_CRASHME */
|