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Support for Home / End keys.

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Some terminal reports ESC [H and ESC [F, while some other reports
ESC OH and ESC OF. We support both but there is at least another
variant documented, hopefully no longer.
This commit is contained in:
antirez
2014-03-13 12:25:14 +01:00
parent 8447b2b0f0
commit ca20f8c4bc
1 changed files with 41 additions and 9 deletions
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50
linenoise.c
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@@ -619,6 +619,22 @@ void linenoiseEditMoveRight(struct linenoiseState *l) {
}
}
/* Move cursor to the start of the line. */
void linenoiseEditMoveHome(struct linenoiseState *l) {
if (l->pos != 0) {
l->pos = 0;
refreshLine(l);
}
}
/* Move cursor to the end of the line. */
void linenoiseEditMoveEnd(struct linenoiseState *l) {
if (l->pos != l->len) {
l->pos = l->len;
refreshLine(l);
}
}
/* Substitute the currently edited line with the next or previous history
* entry as specified by 'dir'. */
#define LINENOISE_HISTORY_NEXT 0
@@ -787,7 +803,7 @@ static int linenoiseEdit(int stdin_fd, int stdout_fd, char *buf, size_t buflen,
if (read(l.ifd,seq,1) == -1) break;
if (read(l.ifd,seq+1,1) == -1) break;
/* [ codes. */
/* ESC [ sequences. */
if (seq[0] == '[') {
if (seq[1] >= '0' && seq[1] <= '9') {
/* Extended escape, read additional byte. */
@@ -801,21 +817,39 @@ static int linenoiseEdit(int stdin_fd, int stdout_fd, char *buf, size_t buflen,
}
} else {
switch(seq[1]) {
case 'A':
case 'A': /* Up */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_PREV);
break;
case 'B':
case 'B': /* Down */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_NEXT);
break;
case 'C':
case 'C': /* Right */
linenoiseEditMoveRight(&l);
break;
case 'D':
case 'D': /* Left */
linenoiseEditMoveLeft(&l);
break;
case 'H': /* Home */
linenoiseEditMoveHome(&l);
break;
case 'F': /* End*/
linenoiseEditMoveEnd(&l);
break;
}
}
}
/* ESC O sequences. */
else if (seq[0] == 'O') {
switch(seq[1]) {
case 'H': /* Home */
linenoiseEditMoveHome(&l);
break;
case 'F': /* End*/
linenoiseEditMoveEnd(&l);
break;
}
}
break;
default:
if (linenoiseEditInsert(&l,c)) return -1;
@@ -831,12 +865,10 @@ static int linenoiseEdit(int stdin_fd, int stdout_fd, char *buf, size_t buflen,
refreshLine(&l);
break;
case CTRL_A: /* Ctrl+a, go to the start of the line */
l.pos = 0;
refreshLine(&l);
linenoiseEditMoveHome(&l);
break;
case CTRL_E: /* ctrl+e, go to the end of the line */
l.pos = l.len;
refreshLine(&l);
linenoiseEditMoveEnd(&l);
break;
case CTRL_L: /* ctrl+l, clear screen */
linenoiseClearScreen();