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html.c: add various strbuf and varadic helpers

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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>
This commit is contained in:
John Keeping 2013-04-07 14:40:50 +01:00 committed by Jason A. Donenfeld
parent 57d09bf448
commit fd00d2f9d6
3 changed files with 63 additions and 4 deletions
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3
cgit.h
View File

@ -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);

53
html.c
View File

@ -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)
@ -76,13 +88,35 @@ void html(const char *txt)
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)
@ -136,6 +170,19 @@ void html_ntxt(int len, const char *txt)
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)
{
const char *t = txt;

11
html.h
View File

@ -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 @@ 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);
extern void html_ntxt(int len, const char *txt);