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authorJeff King <peff@peff.net>2011-02-26 05:08:53 (GMT)
committerJunio C Hamano <gitster@pobox.com>2011-02-26 09:06:50 (GMT)
commitebeb60900fbab569ed14f710a0a1abb1637ec792 (patch)
treece1d20fec4ef43f883230238eed21be1a598b1e0 /trace.c
parentab8632ae36d2e5faf524309696725b60ec18e588 (diff)
downloadgit-ebeb60900fbab569ed14f710a0a1abb1637ec792.zip
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strbuf: add strbuf_vaddf
In a variable-args function, the code for writing into a strbuf is non-trivial. We ended up cutting and pasting it in several places because there was no vprintf-style function for strbufs (which in turn was held up by a lack of va_copy). Now that we have a fallback va_copy, we can add strbuf_vaddf, the strbuf equivalent of vsprintf. And we can clean up the cut and paste mess. Signed-off-by: Jeff King <peff@peff.net> Improved-by: Christian Couder <christian.couder@gmail.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'trace.c')
-rw-r--r--trace.c32
1 files changed, 6 insertions, 26 deletions
diff --git a/trace.c b/trace.c
index 35d388d..eda3f6d 100644
--- a/trace.c
+++ b/trace.c
@@ -64,28 +64,18 @@ static const char err_msg[] = "Could not trace into fd given by "
void trace_printf(const char *fmt, ...)
{
- struct strbuf buf;
+ struct strbuf buf = STRBUF_INIT;
va_list ap;
- int fd, len, need_close = 0;
+ int fd, need_close = 0;
fd = get_trace_fd(&need_close);
if (!fd)
return;
set_try_to_free_routine(NULL); /* is never reset */
- strbuf_init(&buf, 64);
va_start(ap, fmt);
- len = vsnprintf(buf.buf, strbuf_avail(&buf), fmt, ap);
+ strbuf_vaddf(&buf, fmt, ap);
va_end(ap);
- if (len >= strbuf_avail(&buf)) {
- strbuf_grow(&buf, len - strbuf_avail(&buf) + 128);
- va_start(ap, fmt);
- len = vsnprintf(buf.buf, strbuf_avail(&buf), fmt, ap);
- va_end(ap);
- if (len >= strbuf_avail(&buf))
- die("broken vsnprintf");
- }
- strbuf_setlen(&buf, len);
write_or_whine_pipe(fd, buf.buf, buf.len, err_msg);
strbuf_release(&buf);
@@ -96,28 +86,18 @@ void trace_printf(const char *fmt, ...)
void trace_argv_printf(const char **argv, const char *fmt, ...)
{
- struct strbuf buf;
+ struct strbuf buf = STRBUF_INIT;
va_list ap;
- int fd, len, need_close = 0;
+ int fd, need_close = 0;
fd = get_trace_fd(&need_close);
if (!fd)
return;
set_try_to_free_routine(NULL); /* is never reset */
- strbuf_init(&buf, 64);
va_start(ap, fmt);
- len = vsnprintf(buf.buf, strbuf_avail(&buf), fmt, ap);
+ strbuf_vaddf(&buf, fmt, ap);
va_end(ap);
- if (len >= strbuf_avail(&buf)) {
- strbuf_grow(&buf, len - strbuf_avail(&buf) + 128);
- va_start(ap, fmt);
- len = vsnprintf(buf.buf, strbuf_avail(&buf), fmt, ap);
- va_end(ap);
- if (len >= strbuf_avail(&buf))
- die("broken vsnprintf");
- }
- strbuf_setlen(&buf, len);
sq_quote_argv(&buf, argv, 0);
strbuf_addch(&buf, '\n');