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Add an option (history-file) for a file to save/restore command prompt

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history, from Olof-Joachim Frahm.
This commit is contained in:
nicm
2015-07-20 15:50:04 +00:00
parent d4ce210713
commit 92af3766ec
6 changed files with 124 additions and 9 deletions
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91
status.c
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@ -47,11 +47,102 @@ const char **status_prompt_complete_list(u_int *, const char *);
char *status_prompt_complete_prefix(const char **, u_int);
char *status_prompt_complete(struct session *, const char *);
char *status_prompt_find_history_file(void);
/* Status prompt history. */
#define PROMPT_HISTORY 100
char **status_prompt_hlist;
u_int status_prompt_hsize;
/* Find the history file to load/save from/to. */
char *
status_prompt_find_history_file(void)
{
const char *home, *history_file;
char *path;
history_file = options_get_string(&global_options, "history-file");
if (*history_file == '\0')
return (NULL);
if (*history_file == '/')
return (xstrdup(history_file));
if (history_file[0] != '~' || history_file[1] != '/')
return (NULL);
if ((home = find_home()) == NULL)
return (NULL);
xasprintf(&path, "%s%s", home, history_file + 1);
return (path);
}
/* Load status prompt history from file. */
void
status_prompt_load_history(void)
{
FILE *f;
char *history_file, *line, *tmp;
size_t length;
if ((history_file = status_prompt_find_history_file()) == NULL)
return;
log_debug("loading history from %s", history_file);
f = fopen(history_file, "r");
if (f == NULL) {
log_debug("%s: %s", history_file, strerror(errno));
free(history_file);
return;
}
free(history_file);
for (;;) {
if ((line = fgetln(f, &length)) == NULL)
break;
if (length > 0) {
if (line[length - 1] == '\n') {
line[length - 1] = '\0';
status_prompt_add_history(line);
} else {
tmp = xmalloc(length + 1);
memcpy(tmp, line, length);
tmp[length] = '\0';
status_prompt_add_history(tmp);
free(tmp);
}
}
}
fclose(f);
}
/* Save status prompt history to file. */
void
status_prompt_save_history(void)
{
FILE *f;
u_int i;
char *history_file;
if ((history_file = status_prompt_find_history_file()) == NULL)
return;
log_debug("saving history to %s", history_file);
f = fopen(history_file, "w");
if (f == NULL) {
log_debug("%s: %s", history_file, strerror(errno));
free(history_file);
return;
}
free(history_file);
for (i = 0; i < status_prompt_hsize; i++) {
fputs(status_prompt_hlist[i], f);
fputc('\n', f);
}
fclose(f);
}
/* Status output tree. */
RB_GENERATE(status_out_tree, status_out, entry, status_out_cmp);