72089cf6b4
Those two spaces after tab have no effect, and always a nuisance when editing. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
139 lines
3.6 KiB
C
139 lines
3.6 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* dos2unix for BusyBox
|
|
*
|
|
* dos2unix '\n' converter 0.5.0
|
|
* based on Unix2Dos 0.9.0 by Peter Hanecak (made 19.2.1997)
|
|
* Copyright 1997,.. by Peter Hanecak <hanecak@megaloman.sk>.
|
|
* All rights reserved.
|
|
*
|
|
* dos2unix filters reading input from stdin and writing output to stdout.
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
|
*/
|
|
//config:config DOS2UNIX
|
|
//config: bool "dos2unix (5.1 kb)"
|
|
//config: default y
|
|
//config: help
|
|
//config: dos2unix is used to convert a text file from DOS format to
|
|
//config: UNIX format, and vice versa.
|
|
//config:
|
|
//config:config UNIX2DOS
|
|
//config: bool "unix2dos (5.1 kb)"
|
|
//config: default y
|
|
//config: help
|
|
//config: unix2dos is used to convert a text file from UNIX format to
|
|
//config: DOS format, and vice versa.
|
|
|
|
//applet:IF_DOS2UNIX(APPLET_NOEXEC(dos2unix, dos2unix, BB_DIR_USR_BIN, BB_SUID_DROP, dos2unix))
|
|
//applet:IF_UNIX2DOS(APPLET_NOEXEC(unix2dos, dos2unix, BB_DIR_USR_BIN, BB_SUID_DROP, unix2dos))
|
|
|
|
//kbuild:lib-$(CONFIG_DOS2UNIX) += dos2unix.o
|
|
//kbuild:lib-$(CONFIG_UNIX2DOS) += dos2unix.o
|
|
|
|
//usage:#define dos2unix_trivial_usage
|
|
//usage: "[-ud] [FILE]"
|
|
//usage:#define dos2unix_full_usage "\n\n"
|
|
//usage: "Convert FILE in-place from DOS to Unix format.\n"
|
|
//usage: "When no file is given, use stdin/stdout.\n"
|
|
//usage: "\n -u dos2unix"
|
|
//usage: "\n -d unix2dos"
|
|
//usage:
|
|
//usage:#define unix2dos_trivial_usage
|
|
//usage: "[-ud] [FILE]"
|
|
//usage:#define unix2dos_full_usage "\n\n"
|
|
//usage: "Convert FILE in-place from Unix to DOS format.\n"
|
|
//usage: "When no file is given, use stdin/stdout.\n"
|
|
//usage: "\n -u dos2unix"
|
|
//usage: "\n -d unix2dos"
|
|
|
|
#include "libbb.h"
|
|
|
|
/* This is a NOEXEC applet. Be very careful! */
|
|
|
|
enum {
|
|
CT_UNIX2DOS = 1,
|
|
CT_DOS2UNIX
|
|
};
|
|
|
|
/* if fn is NULL then input is stdin and output is stdout */
|
|
static void convert(char *fn, int conv_type)
|
|
{
|
|
FILE *in, *out;
|
|
int ch;
|
|
char *temp_fn = temp_fn; /* for compiler */
|
|
char *resolved_fn = resolved_fn;
|
|
|
|
in = stdin;
|
|
out = stdout;
|
|
if (fn != NULL) {
|
|
struct stat st;
|
|
int fd;
|
|
|
|
resolved_fn = xmalloc_follow_symlinks(fn);
|
|
if (resolved_fn == NULL)
|
|
bb_simple_perror_msg_and_die(fn);
|
|
in = xfopen_for_read(resolved_fn);
|
|
xfstat(fileno(in), &st, resolved_fn);
|
|
|
|
temp_fn = xasprintf("%sXXXXXX", resolved_fn);
|
|
fd = xmkstemp(temp_fn);
|
|
if (fchmod(fd, st.st_mode) == -1)
|
|
bb_simple_perror_msg_and_die(temp_fn);
|
|
fchown(fd, st.st_uid, st.st_gid);
|
|
|
|
out = xfdopen_for_write(fd);
|
|
}
|
|
|
|
while ((ch = fgetc(in)) != EOF) {
|
|
if (ch == '\r')
|
|
continue;
|
|
if (ch == '\n')
|
|
if (conv_type == CT_UNIX2DOS)
|
|
fputc('\r', out);
|
|
fputc(ch, out);
|
|
}
|
|
|
|
if (fn != NULL) {
|
|
if (fclose(in) < 0 || fclose(out) < 0) {
|
|
unlink(temp_fn);
|
|
bb_perror_nomsg_and_die();
|
|
}
|
|
xrename(temp_fn, resolved_fn);
|
|
free(temp_fn);
|
|
free(resolved_fn);
|
|
}
|
|
}
|
|
|
|
int dos2unix_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int dos2unix_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
int o, conv_type;
|
|
|
|
/* See if we are supposed to be doing dos2unix or unix2dos */
|
|
if (ENABLE_DOS2UNIX
|
|
&& (!ENABLE_UNIX2DOS || applet_name[0] == 'd')
|
|
) {
|
|
conv_type = CT_DOS2UNIX;
|
|
} else {
|
|
conv_type = CT_UNIX2DOS;
|
|
}
|
|
|
|
/* -u convert to unix, -d convert to dos */
|
|
opt_complementary = "u--d:d--u"; /* mutually exclusive */
|
|
o = getopt32(argv, "du");
|
|
|
|
/* Do the conversion requested by an argument else do the default
|
|
* conversion depending on our name. */
|
|
if (o)
|
|
conv_type = o;
|
|
|
|
argv += optind;
|
|
do {
|
|
/* might be convert(NULL) if there is no filename given */
|
|
convert(*argv, conv_type);
|
|
} while (*argv && *++argv);
|
|
|
|
return 0;
|
|
}
|