all repos — cgit @ fd00d2f9d6088223f57006949dc6ce7c36316a79

a hyperfast web frontend for git written in c 

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>
John Keeping john@keeping.me.uk
Sun, 07 Apr 2013 14:40:50 +0100
commit

fd00d2f9d6088223f57006949dc6ce7c36316a79

parent

57d09bf448990b3a67436e928807e854e491756f

3 files changed, 63 insertions(+), 4 deletions(-)

jump to
M cgit.h → cgit.h 
@@ -327,6 +327,9 @@
 __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);
M html.c → html.c 
@@ -63,6 +63,18 @@ }
 	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)

@@ -76,13 +88,35 @@ }
 
 void htmlf(const char *format, ...)
 {
-	static char buf[65536];
+	va_list args;
+	struct strbuf buf = STRBUF_INIT;
+
+	va_start(args, format);
+	strbuf_vaddf(&buf, format, args);
+	va_end(args);
+	html(buf.buf);
+	strbuf_release(&buf);
+}
+
+void html_txtf(const char *format, ...)
+{
 	va_list args;
 
 	va_start(args, format);
-	vsnprintf(buf, sizeof(buf), format, args);
+	html_vtxtf(format, args);
 	va_end(args);
-	html(buf);
+}
+
+void html_vtxtf(const char *format, va_list ap)
+{
+	va_list cp;
+	struct strbuf buf = STRBUF_INIT;
+
+	va_copy(cp, ap);
+	strbuf_vaddf(&buf, format, cp);
+	va_end(cp);
+	html_txt(buf.buf);
+	strbuf_release(&buf);
 }
 
 void html_status(int code, const char *msg, int more_headers)

@@ -134,6 +168,19 @@ if (t != txt)
 		html_raw(txt, t - txt);
 	if (len < 0)
 		html("...");
+}
+
+void html_attrf(const char *fmt, ...)
+{
+	va_list ap;
+	struct strbuf sb = STRBUF_INIT;
+
+	va_start(ap, fmt);
+	strbuf_vaddf(&sb, fmt, ap);
+	va_end(ap);
+
+	html_attr(sb.buf);
+	strbuf_release(&sb);
 }
 
 void html_attr(const char *txt)
M html.h → html.h 
@@ -1,13 +1,22 @@
 #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);
 
 __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);