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line editing: add an option to emit ESC [ 6 n and use results

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This makes line editing able to recognize case when
cursor was not at the beginning of the line. It may also
be adapted later to find out display size (serial line users
would love it).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2009-05-17 16:44:54 +02:00
parent 071ede1e5d
commit 020f40693a
6 changed files with 116 additions and 35 deletions
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13
editors/vi.c
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@@ -151,7 +151,6 @@ struct globals {
char erase_char; // the users erase character
char last_input_char; // last char read from user
smalluint chars_to_parse;
#if ENABLE_FEATURE_VI_DOT_CMD
smallint adding2q; // are we currently adding user input to q
int lmc_len; // length of last_modifying_cmd
@@ -235,7 +234,6 @@ struct globals {
#define last_forward_char (G.last_forward_char )
#define erase_char (G.erase_char )
#define last_input_char (G.last_input_char )
#define chars_to_parse (G.chars_to_parse )
#if ENABLE_FEATURE_VI_READONLY
#define readonly_mode (G.readonly_mode )
#else
@@ -620,7 +618,7 @@ static void edit_file(char *fn)
// 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 (!chars_to_parse && mysleep(0) == 0) {
if (!readbuffer[0] && mysleep(0) == 0) {
// no input pending - so update output
refresh(FALSE);
show_status_line();
@@ -2206,7 +2204,7 @@ static int readit(void) // read (maybe cursor) key from stdin
int c;
fflush(stdout);
c = read_key(STDIN_FILENO, &chars_to_parse, readbuffer);
c = read_key(STDIN_FILENO, readbuffer);
if (c == -1) { // EOF/error
go_bottom_and_clear_to_eol();
cookmode(); // terminal to "cooked"
@@ -3851,10 +3849,11 @@ static void crash_dummy()
cmd1 = " \n\r\002\004\005\006\025\0310^$-+wWeEbBhjklHL";
// is there already a command running?
if (chars_to_parse > 0)
if (readbuffer[0] > 0)
goto cd1;
cd0:
startrbi = rbi = 0;
readbuffer[0] = 'X';
startrbi = rbi = 1;
sleeptime = 0; // how long to pause between commands
memset(readbuffer, '\0', sizeof(readbuffer));
// generate a command by percentages
@@ -3928,7 +3927,7 @@ static void crash_dummy()
}
strcat(readbuffer, "\033");
}
chars_to_parse = strlen(readbuffer);
readbuffer[0] = strlen(readbuffer + 1);
cd1:
totalcmds++;
if (sleeptime > 0)