html.c: add various strbuf and varadic helpers
This adds the fmtalloc helper, html_txtf, html_vtxtf, and html_attrf.
These takes a printf style format string like htmlf but escapes the
resulting string. The html_vtxtf variant takes a va_list whereas
html_txtf is variadic.
Signed-off-by: John Keeping <john@keeping.me.uk>
diff --git a/html.h b/html.h
index bb36f37..be3b311 100644
--- a/html.h
+++ b/html.h
@@ -1,7 +1,7 @@
#ifndef HTML_H
#define HTML_H
-#include <stddef.h>
+#include "cgit.h"
extern void html_raw(const char *txt, size_t size);
extern void html(const char *txt);
@@ -9,6 +9,15 @@
__attribute__((format (printf,1,2)))
extern void htmlf(const char *format,...);
+__attribute__((format (printf,1,2)))
+extern void html_txtf(const char *format,...);
+
+__attribute__((format (printf,1,0)))
+extern void html_vtxtf(const char *format, va_list ap);
+
+__attribute__((format (printf,1,2)))
+extern void html_attrf(const char *format,...);
+
extern void html_status(int code, const char *msg, int more_headers);
extern void html_txt(const char *txt);
extern void html_ntxt(int len, const char *txt);