edit: Implement history file read/write

diff --git a/src/utils/edit.c b/src/utils/edit.c
index ce220e59b9cf2e5f5b7ff4081163a7aab36c76bf..836397d4351c67e0bc5ebd6f31474d24b05e56d0 100644 (file)
--- a/src/utils/edit.c
+++ b/src/utils/edit.c
@@ -250,6 +250,49 @@ static void history_next(void)
 }
 
 
+static void history_read(const char *fname)
+{
+       FILE *f;
+       char buf[CMD_BUF_LEN], *pos;
+
+       f = fopen(fname, "r");
+       if (f == NULL)
+               return;
+
+       while (fgets(buf, CMD_BUF_LEN, f)) {
+               for (pos = buf; *pos; pos++) {
+                       if (*pos == '\r' || *pos == '\n') {
+                               *pos = '\0';
+                               break;
+                       }
+               }
+               history_add(buf);
+       }
+
+       fclose(f);
+}
+
+
+static void history_write(const char *fname,
+                         int (*filter_cb)(void *ctx, const char *cmd))
+{
+       FILE *f;
+       struct edit_history *h;
+
+       f = fopen(fname, "w");
+       if (f == NULL)
+               return;
+
+       dl_list_for_each_reverse(h, &history_list, struct edit_history, list) {
+               if (filter_cb && filter_cb(edit_cb_ctx, h->str))
+                       continue;
+               fprintf(f, "%s\n", h->str);
+       }
+
+       fclose(f);
+}
+
+
 static void history_debug_dump(void)
 {
        struct edit_history *h;
@@ -1053,6 +1096,8 @@ int edit_init(void (*cmd_cb)(void *ctx, char *cmd),
 {
        dl_list_init(&history_list);
        history_curr = NULL;
+       if (history_file)
+               history_read(history_file);
 
        edit_cb_ctx = ctx;
        edit_cmd_cb = cmd_cb;
@@ -1077,6 +1122,8 @@ void edit_deinit(const char *history_file,
                 int (*filter_cb)(void *ctx, const char *cmd))
 {
        struct edit_history *h;
+       if (history_file)
+               history_write(history_file, filter_cb);
        while ((h = dl_list_first(&history_list, struct edit_history, list))) {
                dl_list_del(&h->list);
                os_free(h);