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63 lines
1.5 KiB
63 lines
1.5 KiB
#include "builtin.h" |
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#include "cache.h" |
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#include "refs.h" |
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#include "parse-options.h" |
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static const char * const git_symbolic_ref_usage[] = { |
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"git symbolic-ref [options] name [ref]", |
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NULL |
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}; |
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static int shorten; |
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static void check_symref(const char *HEAD, int quiet) |
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{ |
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unsigned char sha1[20]; |
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int flag; |
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const char *refname = resolve_ref_unsafe(HEAD, sha1, 0, &flag); |
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if (!refname) |
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die("No such ref: %s", HEAD); |
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else if (!(flag & REF_ISSYMREF)) { |
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if (!quiet) |
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die("ref %s is not a symbolic ref", HEAD); |
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else |
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exit(1); |
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} |
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if (shorten) |
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refname = shorten_unambiguous_ref(refname, 0); |
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puts(refname); |
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} |
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int cmd_symbolic_ref(int argc, const char **argv, const char *prefix) |
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{ |
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int quiet = 0; |
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const char *msg = NULL; |
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struct option options[] = { |
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OPT__QUIET(&quiet, |
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"suppress error message for non-symbolic (detached) refs"), |
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OPT_BOOL(0, "short", &shorten, "shorten ref output"), |
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OPT_STRING('m', NULL, &msg, "reason", "reason of the update"), |
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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, prefix, options, |
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git_symbolic_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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switch (argc) { |
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case 1: |
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check_symref(argv[0], quiet); |
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break; |
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case 2: |
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if (!strcmp(argv[0], "HEAD") && |
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prefixcmp(argv[1], "refs/")) |
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die("Refusing to point HEAD outside of refs/"); |
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create_symref(argv[0], argv[1], msg); |
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break; |
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default: |
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usage_with_options(git_symbolic_ref_usage, options); |
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} |
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return 0; |
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}
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