Add a H_SAVE_FP operation to history() which lets the history be saved

to an open file pointer. From NetBSD via Eitan Adler.

ok millert

1 files changed, 29 insertions, 8 deletions

diff --git a/lib/libedit/history.c b/lib/libedit/history.c
index 76b0d70bc0c..1c8290b621f 100644
--- a/lib/libedit/history.c
+++ b/lib/libedit/history.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: history.c,v 1.17 2014/01/19 11:48:54 tobias Exp $	*/
+/*	$OpenBSD: history.c,v 1.18 2014/05/19 08:58:34 nicm Exp $	*/
 /*	$NetBSD: history.c,v 1.37 2010/01/03 18:27:10 christos Exp $	*/
 
 /*-
@@ -103,6 +103,7 @@ private int history_getunique(TYPE(History) *, TYPE(HistEvent) *);
 private int history_set_fun(TYPE(History) *, TYPE(History) *);
 private int history_load(TYPE(History) *, const char *);
 private int history_save(TYPE(History) *, const char *);
+private int history_save_fp(TYPE(History) *, FILE *);
 private int history_prev_event(TYPE(History) *, TYPE(HistEvent) *, int);
 private int history_next_event(TYPE(History) *, TYPE(HistEvent) *, int);
 private int history_next_string(TYPE(History) *, TYPE(HistEvent) *, const Char *);
@@ -784,13 +785,12 @@ done:
 }
 
 
-/* history_save():
+/* history_save_fp():
  *	TYPE(History) save function
  */
 private int
-history_save(TYPE(History) *h, const char *fname)
+history_save_fp(TYPE(History) *h, FILE *fp)
 {
-	FILE *fp;
 	TYPE(HistEvent) ev;
 	int i = -1, retval;
 	size_t len, max_size;
@@ -799,9 +799,6 @@ history_save(TYPE(History) *h, const char *fname)
 	static ct_buffer_t conv;
 #endif
 
-	if ((fp = fopen(fname, "w")) == NULL)
-		return (-1);
-
 	if (fchmod(fileno(fp), S_IRUSR|S_IWUSR) == -1)
 		goto done;
 	if (fputs(hist_cookie, fp) == EOF)
@@ -830,11 +827,29 @@ history_save(TYPE(History) *h, const char *fname)
 oomem:
 	h_free((ptr_t)ptr);
 done:
-	(void) fclose(fp);
 	return (i);
 }
 
 
+/* history_save():
+ *    History save function
+ */
+private int
+history_save(TYPE(History) *h, const char *fname)
+{
+	FILE *fp;
+	int i;
+
+	if ((fp = fopen(fname, "w")) == NULL)
+		return -1;
+
+	i = history_save_fp(h, fp);
+
+	(void) fclose(fp);
+	return i;
+}
+
+
 /* history_prev_event():
  *	Find the previous event, with number given
  */
@@ -1015,6 +1030,12 @@ FUNW(history)(TYPE(History) *h, TYPE(HistEvent) *ev, int fun, ...)
 			he_seterrev(ev, _HE_HIST_WRITE);
 		break;
 
+	case H_SAVE_FP:
+		retval = history_save_fp(h, va_arg(va, FILE *));
+		if (retval == -1)
+		    he_seterrev(ev, _HE_HIST_WRITE);
+		break;
+
 	case H_PREV_EVENT:
 		retval = history_prev_event(h, ev, va_arg(va, int));
 		break;