[PATCH v2 04/22] html.c: add fmtalloc helper

[john at keeping.me.uk (John Keeping)]

Signed-off-by: John Keeping <john at keeping.me.uk>
---
 cgit.h |  3 +++
 html.c | 12 ++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/cgit.h b/cgit.h
index 7581cc1..7619cbb 100644
--- a/cgit.h
+++ b/cgit.h
@@ -327,6 +327,9 @@ extern void cgit_diff_commit(struct commit *commit, filepair_fn fn,
 __attribute__((format (printf,1,2)))
 extern char *fmt(const char *format,...);
 
+__attribute__((format (printf,1,2)))
+extern char *fmtalloc(const char *format,...);
+
 extern struct commitinfo *cgit_parse_commit(struct commit *commit);
 extern struct taginfo *cgit_parse_tag(struct tag *tag);
 extern void cgit_parse_url(const char *url);
diff --git a/html.c b/html.c
index 8c45ba6..c0cb4b7 100644
--- a/html.c
+++ b/html.c
@@ -63,6 +63,18 @@ char *fmt(const char *format, ...)
 	return buf[bufidx];
 }
 
+char *fmtalloc(const char *format, ...)
+{
+	struct strbuf sb = STRBUF_INIT;
+	va_list args;
+
+	va_start(args, format);
+	strbuf_vaddf(&sb, format, args);
+	va_end(args);
+
+	return strbuf_detach(&sb, NULL);
+}
+
 void html_raw(const char *data, size_t size)
 {
 	if (write(htmlfd, data, size) != size)
-- 
1.8.2.692.g17a9715