Function fn_filename_completion_function

extern/editline/src/filecomplete.c:144–257

* return first found file name starting by the ``text'' or NULL if no * such file can be found * value of ``state'' is ignored * * it's the caller's responsibility to free the returned string */

 * it's the caller's responsibility to free the returned string
 */
char *
fn_filename_completion_function(const char *text, int state)
{
	static DIR *dir = NULL;
	static char *filename = NULL, *dirname = NULL, *dirpath = NULL;
	static size_t filename_len = 0;
	struct dirent *entry;
	char *temp;
	size_t len;

	if (state == 0 || dir == NULL) {
		temp = strrchr(text, '/');
		if (temp) {
			char *nptr;
			temp++;
			nptr = el_realloc(filename, (strlen(temp) + 1) *
			    sizeof(*nptr));
			if (nptr == NULL) {
				el_free(filename);
				filename = NULL;
				return NULL;
			}
			filename = nptr;
			(void)strcpy(filename, temp);
			len = (size_t)(temp - text);	/* including last slash */

			nptr = el_realloc(dirname, (len + 1) *
			    sizeof(*nptr));
			if (nptr == NULL) {
				el_free(dirname);
				dirname = NULL;
				return NULL;
			}
			dirname = nptr;
			(void)strncpy(dirname, text, len);
			dirname[len] = '\0';
		} else {
			el_free(filename);
			if (*text == 0)
				filename = NULL;
			else {
				filename = strdup(text);
				if (filename == NULL)
					return NULL;
			}
			el_free(dirname);
			dirname = NULL;
		}

		if (dir != NULL) {
			(void)closedir(dir);
			dir = NULL;
		}

		/* support for ``~user'' syntax */

		el_free(dirpath);
		dirpath = NULL;