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Add support for el_no_hist to disable access to and auto-save of history.

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This commit adds a new global variable 'el_no_hist' which can be used
to disable auto-save of history as well as access to history using prev
and next keybindings (up/down arrows).

Signed-off-by: Mattias Walström <lazzer@gmail.com>
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Mattias Walström 2014-11-04 22:47:50 +01:00 committed by Joachim Nilsson
parent f7432fbfbd
commit 7cd7fc4b61
2 changed files with 11 additions and 3 deletions
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3
include/editline.h
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@ -72,7 +72,8 @@ extern char *rl_line_buffer;
extern const char *rl_readline_name; extern const char *rl_readline_name;
extern FILE *rl_instream; /* The stdio stream from which input is read. Defaults to stdin if NULL - Not supported yet! */ extern FILE *rl_instream; /* The stdio stream from which input is read. Defaults to stdin if NULL - Not supported yet! */
extern FILE *rl_outstream; /* The stdio stream to which output is flushed. Defaults to stdout if NULL - Not supported yet! */ extern FILE *rl_outstream; /* The stdio stream to which output is flushed. Defaults to stdout if NULL - Not supported yet! */
extern int el_no_echo; /* e.g under emacs, don't echo except prompt */ extern int el_no_echo; /* E.g under emacs, don't echo except prompt */
extern int el_no_hist; /* Disable auto-save of and access to history -- e.g. for password prompts or wizards */
extern int el_hist_size; /* size of history scrollback buffer, default: 15 */ extern int el_hist_size; /* size of history scrollback buffer, default: 15 */
extern void rl_initialize(void); extern void rl_initialize(void);

11
src/editline.c
View File

@ -107,6 +107,7 @@ static int tty_cols = SCREEN_COLS;
static int tty_rows = SCREEN_ROWS; static int tty_rows = SCREEN_ROWS;
int el_no_echo = 0; /* e.g., under Emacs */ int el_no_echo = 0; /* e.g., under Emacs */
int el_no_hist = 0;
int rl_point; int rl_point;
int rl_mark; int rl_mark;
int rl_end; int rl_end;
@ -547,11 +548,17 @@ static el_status_t do_hist(const char *(*move)(void))
static el_status_t h_next(void) static el_status_t h_next(void)
{ {
if (el_no_hist)
return CSstay;
return do_hist(next_hist); return do_hist(next_hist);
} }
static el_status_t h_prev(void) static el_status_t h_prev(void)
{ {
if (el_no_hist)
return CSstay;
return do_hist(prev_hist); return do_hist(prev_hist);
} }
@ -1210,8 +1217,8 @@ char *readline(const char *prompt)
free(Screen); free(Screen);
free(H.Lines[--H.Size]); free(H.Lines[--H.Size]);
/* Add to history, unless no-echo mode ... */ /* Add to history, unless no-echo or no-history mode ... */
if (!el_no_echo) { if (!el_no_echo && !el_no_hist) {
if (line != NULL && *line != '\0') if (line != NULL && *line != '\0')
hist_add(line); hist_add(line);
} }