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https://github.com/git/git.git
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1b1dd23f2d
When you misuse a git command, you are shown the usage string. But this is currently shown in the dashed form. So if you just copy what you see, it will not work, when the dashed form is no longer supported. This patch makes git commands show the dash-less version. For shell scripts that do not specify OPTIONS_SPEC, git-sh-setup.sh generates a dash-less usage string now. Signed-off-by: Stephan Beyer <s-beyer@gmx.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
#include "cache.h"
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#include "refs.h"
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#include "builtin.h"
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#include "parse-options.h"
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static const char * const git_update_ref_usage[] = {
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"git update-ref [options] -d <refname> [<oldval>]",
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"git update-ref [options] <refname> <newval> [<oldval>]",
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NULL
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};
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int cmd_update_ref(int argc, const char **argv, const char *prefix)
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{
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const char *refname, *oldval, *msg=NULL;
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unsigned char sha1[20], oldsha1[20];
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int delete = 0, no_deref = 0;
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struct option options[] = {
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OPT_STRING( 'm', NULL, &msg, "reason", "reason of the update"),
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OPT_BOOLEAN('d', NULL, &delete, "deletes the reference"),
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OPT_BOOLEAN( 0 , "no-deref", &no_deref,
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"update <refname> not the one it points to"),
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OPT_END(),
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};
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git_config(git_default_config, NULL);
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argc = parse_options(argc, argv, options, git_update_ref_usage, 0);
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if (msg && !*msg)
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die("Refusing to perform update with empty message.");
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if (delete) {
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if (argc < 1 || argc > 2)
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usage_with_options(git_update_ref_usage, options);
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refname = argv[0];
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oldval = argv[1];
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} else {
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const char *value;
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if (argc < 2 || argc > 3)
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usage_with_options(git_update_ref_usage, options);
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refname = argv[0];
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value = argv[1];
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oldval = argv[2];
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if (get_sha1(value, sha1))
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die("%s: not a valid SHA1", value);
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}
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hashclr(oldsha1); /* all-zero hash in case oldval is the empty string */
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if (oldval && *oldval && get_sha1(oldval, oldsha1))
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die("%s: not a valid old SHA1", oldval);
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if (delete)
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return delete_ref(refname, oldval ? oldsha1 : NULL);
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else
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return update_ref(msg, refname, sha1, oldval ? oldsha1 : NULL,
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no_deref ? REF_NODEREF : 0, DIE_ON_ERR);
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}
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