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authorRene Scharfe <rene.scharfe@lsrfire.ath.cx>2006-08-21 20:43:43 +0200
committerJunio C Hamano <junkio@cox.net>2006-08-21 20:22:23 -0700
commit7230e6d042ae385377f09c4d226d9b1aa7a2c13b (patch)
tree15c64d30f517ba50cac77f81efddc71d22666023 /builtin-cat-file.c
parent3f0073a2fabce18303aeef154dd6ec5aa8faa5e7 (diff)
downloadgit-7230e6d042ae385377f09c4d226d9b1aa7a2c13b.tar.gz
Add write_or_die(), a helper function
The little helper write_or_die() won't come back with bad news about full disks or broken pipes. It either succeeds or terminates the program, making additional error handling unnecessary. This patch adds the new function and uses it to replace two similar ones (the one in tar-tree originally has been copied from cat-file btw.). I chose to add the fd parameter which both lacked to make write_or_die() just as flexible as write() and thus suitable for lib-ification. There is a regression: error messages emitted by this function don't show the program name, while the replaced two functions did. That's acceptable, I think; a lot of other functions do the same. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <junkio@cox.net>
Diffstat (limited to 'builtin-cat-file.c')
-rw-r--r--builtin-cat-file.c29
1 files changed, 6 insertions, 23 deletions
diff --git a/builtin-cat-file.c b/builtin-cat-file.c
index df009ade7a..7a6fa56e93 100644
--- a/builtin-cat-file.c
+++ b/builtin-cat-file.c
@@ -9,23 +9,6 @@
#include "tree.h"
#include "builtin.h"
-static void flush_buffer(const char *buf, unsigned long size)
-{
- while (size > 0) {
- long ret = xwrite(1, buf, size);
- if (ret < 0) {
- /* Ignore epipe */
- if (errno == EPIPE)
- break;
- die("git-cat-file: %s", strerror(errno));
- } else if (!ret) {
- die("git-cat-file: disk full?");
- }
- size -= ret;
- buf += ret;
- }
-}
-
static void pprint_tag(const unsigned char *sha1, const char *buf, unsigned long size)
{
/* the parser in tag.c is useless here. */
@@ -42,7 +25,7 @@ static void pprint_tag(const unsigned char *sha1, const char *buf, unsigned long
/* Found the tagger line. Copy out the contents
* of the buffer so far.
*/
- flush_buffer(buf, cp - buf);
+ write_or_die(1, buf, cp - buf);
/*
* Do something intelligent, like pretty-printing
@@ -61,18 +44,18 @@ static void pprint_tag(const unsigned char *sha1, const char *buf, unsigned long
sp++;
if (sp == cp) {
/* give up */
- flush_buffer(tagger,
+ write_or_die(1, tagger,
cp - tagger);
break;
}
while (sp < cp &&
!('0' <= *sp && *sp <= '9'))
sp++;
- flush_buffer(tagger, sp - tagger);
+ write_or_die(1, tagger, sp - tagger);
date = strtoul(sp, &ep, 10);
tz = strtol(ep, NULL, 10);
sp = show_date(date, tz);
- flush_buffer(sp, strlen(sp));
+ write_or_die(1, sp, strlen(sp));
xwrite(1, "\n", 1);
break;
}
@@ -90,7 +73,7 @@ static void pprint_tag(const unsigned char *sha1, const char *buf, unsigned long
* remainder as is.
*/
if (cp < endp)
- flush_buffer(cp, endp - cp);
+ write_or_die(1, cp, endp - cp);
}
int cmd_cat_file(int argc, const char **argv, const char *prefix)
@@ -162,6 +145,6 @@ int cmd_cat_file(int argc, const char **argv, const char *prefix)
if (!buf)
die("git-cat-file %s: bad file", argv[2]);
- flush_buffer(buf, size);
+ write_or_die(1, buf, size);
return 0;
}