X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fuci.git;a=blobdiff_plain;f=history.c;h=070930b9093a610ea8a8aa3d547d37d2f97ffd6e;hp=7ac8050291cfee8699e768dea6a55e3ce4e905a6;hb=031b620e1f3a16078da45ce00352508764902786;hpb=e828bcf07c0602746dffcc9927c446d1fe4c3ad9

diff --git a/history.c b/history.c
index 7ac8050..070930b 100644
--- a/history.c
+++ b/history.c
@@ -26,6 +26,42 @@
 #include <stdio.h>
 #include <ctype.h>
 
+/* record a change that was done to a package */
+static void
+uci_add_history(struct uci_context *ctx, struct uci_list *list, int cmd, char *section, char *option, char *value)
+{
+	struct uci_history *h;
+	int size = strlen(section) + 1;
+	char *ptr;
+
+	if (value)
+		size += strlen(value) + 1;
+
+	h = uci_alloc_element(ctx, history, option, size);
+	ptr = uci_dataptr(h);
+	h->cmd = cmd;
+	h->section = strcpy(ptr, section);
+	if (value) {
+		ptr += strlen(ptr) + 1;
+		h->value = strcpy(ptr, value);
+	}
+	uci_list_add(list, &h->e.list);
+}
+
+static void
+uci_free_history(struct uci_history *h)
+{
+	if (!h)
+		return;
+	if ((h->section != NULL) &&
+		(h->section != uci_dataptr(h))) {
+		free(h->section);
+		free(h->value);
+	}
+	uci_free_element(&h->e);
+}
+
+
 int uci_set_savedir(struct uci_context *ctx, const char *dir)
 {
 	char *sdir;
@@ -85,6 +121,20 @@ static void uci_parse_history_line(struct uci_context *ctx, struct uci_package *
 	if (rename && !uci_validate_str(value, (option || delete)))
 		goto error;
 
+	if (ctx->flags & UCI_FLAG_SAVED_HISTORY) {
+		int cmd;
+
+		/* NB: no distinction between CMD_CHANGE and CMD_ADD possible at this point */
+		if(delete)
+			cmd = UCI_CMD_REMOVE;
+		else if (rename)
+			cmd = UCI_CMD_RENAME;
+		else
+			cmd = UCI_CMD_CHANGE;
+
+		uci_add_history(ctx, &p->saved_history, cmd, section, option, value);
+	}
+
 	if (rename)
 		UCI_INTERNAL(uci_rename, ctx, p, section, option, value);
 	else if (delete)
@@ -97,9 +147,11 @@ error:
 	UCI_THROW(ctx, UCI_ERR_PARSE);
 }
 
-static void uci_parse_history(struct uci_context *ctx, FILE *stream, struct uci_package *p)
+/* returns the number of changes that were successfully parsed */
+static int uci_parse_history(struct uci_context *ctx, FILE *stream, struct uci_package *p)
 {
 	struct uci_parse_context *pctx;
+	int changes = 0;
 
 	/* make sure no memory from previous parse attempts is leaked */
 	ctx->internal = true;
@@ -121,6 +173,7 @@ static void uci_parse_history(struct uci_context *ctx, FILE *stream, struct uci_
 		UCI_TRAP_SAVE(ctx, error);
 		uci_parse_history_line(ctx, p, pctx->buf);
 		UCI_TRAP_RESTORE(ctx);
+		changes++;
 error:
 		continue;
 	}
@@ -128,32 +181,38 @@ error:
 	/* no error happened, we can get rid of the parser context now */
 	ctx->internal = true;
 	uci_cleanup(ctx);
+	return changes;
 }
 
-static void uci_load_history_file(struct uci_context *ctx, struct uci_package *p, char *filename, FILE **f, bool flush)
+/* returns the number of changes that were successfully parsed */
+static int uci_load_history_file(struct uci_context *ctx, struct uci_package *p, char *filename, FILE **f, bool flush)
 {
 	FILE *stream = NULL;
+	int changes = 0;
 
 	UCI_TRAP_SAVE(ctx, done);
 	stream = uci_open_stream(ctx, filename, SEEK_SET, flush, false);
 	if (p)
-		uci_parse_history(ctx, stream, p);
+		changes = uci_parse_history(ctx, stream, p);
 	UCI_TRAP_RESTORE(ctx);
 done:
 	if (f)
 		*f = stream;
 	else if (stream)
 		uci_close_stream(stream);
+	return changes;
 }
 
-static void uci_load_history(struct uci_context *ctx, struct uci_package *p, bool flush)
+/* returns the number of changes that were successfully parsed */
+static int uci_load_history(struct uci_context *ctx, struct uci_package *p, bool flush)
 {
 	struct uci_element *e;
 	char *filename = NULL;
 	FILE *f = NULL;
+	int changes = 0;
 
 	if (!p->confdir)
-		return;
+		return 0;
 
 	uci_foreach_element(&ctx->history_path, e) {
 		if ((asprintf(&filename, "%s/%s", e->name, p->e.name) < 0) || !filename)
@@ -166,8 +225,8 @@ static void uci_load_history(struct uci_context *ctx, struct uci_package *p, boo
 	if ((asprintf(&filename, "%s/%s", ctx->savedir, p->e.name) < 0) || !filename)
 		UCI_THROW(ctx, UCI_ERR_MEM);
 
-	uci_load_history_file(ctx, p, filename, &f, flush);
-	if (flush && f) {
+	changes = uci_load_history_file(ctx, p, filename, &f, flush);
+	if (flush && f && (changes > 0)) {
 		rewind(f);
 		ftruncate(fileno(f), 0);
 	}
@@ -175,6 +234,7 @@ static void uci_load_history(struct uci_context *ctx, struct uci_package *p, boo
 		free(filename);
 	uci_close_stream(f);
 	ctx->errno = 0;
+	return changes;
 }
 
 static void uci_filter_history(struct uci_context *ctx, const char *name, char *section, char *option)