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version: convert to parse-options 

The "git version" command didn't traditionally accept any
options, and in fact ignores any you give it. When we added
simple option parsing for "--build-options" in 6b9c38e14, we
didn't improve this; we just loop over the arguments and
pick out the one we recognize.

Instead, let's move to a real parsing loop, complain about
nonsense options, and recognize conventions like "-h".

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2017-05-30 01:17:42 -04:00 committed by Junio C Hamano
parent 5a88f97cff
commit b48cbfc5e6
1 changed files with 20 additions and 5 deletions
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25
help.c
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@ -8,6 +8,7 @@
#include "column.h"
#include "version.h"
#include "refs.h"
#include "parse-options.h"
void add_cmdname(struct cmdnames *cmds, const char *name, int len)
{
@ -424,16 +425,30 @@ const char *help_unknown_cmd(const char *cmd)
int cmd_version(int argc, const char **argv, const char *prefix)
{
int build_options = 0;
const char * const usage[] = {
N_("git version [<options>]"),
NULL
};
struct option options[] = {
OPT_BOOL(0, "build-options", &build_options,
"also print build options"),
OPT_END()
};
argc = parse_options(argc, argv, prefix, options, usage, 0);
/*
* The format of this string should be kept stable for compatibility
* with external projects that rely on the output of "git version".
*
* Always show the version, even if other options are given.
*/
printf("git version %s\n", git_version_string);
while (*++argv) {
if (!strcmp(*argv, "--build-options")) {
printf("sizeof-long: %d\n", (int)sizeof(long));
/* NEEDSWORK: also save and output GIT-BUILD_OPTIONS? */
}
if (build_options) {
printf("sizeof-long: %d\n", (int)sizeof(long));
/* NEEDSWORK: also save and output GIT-BUILD_OPTIONS? */
}
return 0;
}