Mercurial > hg
changeset 28788:57a78a64de44
chg: add util function abortmsgerrno to print error with errno
It's common to abortmsg with the errno information. Let's make a utility
function for it.
| author | Jun Wu <quark@fb.com> |
|---|---|
| date | Tue, 05 Apr 2016 17:25:39 +0100 |
| parents | ea86cdcd9b50 |
| children | 7f6e0a15189b |
| files | contrib/chg/util.c contrib/chg/util.h |
| diffstat | 2 files changed, 23 insertions(+), 6 deletions(-) [+] |
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--- a/contrib/chg/util.c Tue Apr 05 14:48:09 2016 +0100 +++ b/contrib/chg/util.c Tue Apr 05 17:25:39 2016 +0100 @@ -7,6 +7,7 @@ * GNU General Public License version 2 or any later version. */ +#include <errno.h> #include <signal.h> #include <stdarg.h> #include <stdio.h> @@ -27,18 +28,33 @@ fprintf(fp, "\033[%sm", code); } +static void vabortmsgerrno(int no, const char *fmt, va_list args) +{ + fsetcolor(stderr, "1;31"); + fputs("chg: abort: ", stderr); + vfprintf(stderr, fmt, args); + if (no != 0) + fprintf(stderr, " (errno = %d, %s)", no, strerror(no)); + fsetcolor(stderr, ""); + fputc('\n', stderr); + exit(255); +} + void abortmsg(const char *fmt, ...) { va_list args; va_start(args, fmt); - fsetcolor(stderr, "1;31"); - fputs("chg: abort: ", stderr); - vfprintf(stderr, fmt, args); - fsetcolor(stderr, ""); - fputc('\n', stderr); + vabortmsgerrno(0, fmt, args); va_end(args); +} - exit(255); +void abortmsgerrno(const char *fmt, ...) +{ + int no = errno; + va_list args; + va_start(args, fmt); + vabortmsgerrno(no, fmt, args); + va_end(args); } static int debugmsgenabled = 0;