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76 lines
1.9 KiB
76 lines
1.9 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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N_("git symbolic-ref [<options>] <name> [<ref>]"), |
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N_("git symbolic-ref -d [-q] <name>"), |
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NULL |
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}; |
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static int check_symref(const char *HEAD, int quiet, int shorten, int print) |
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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, 0, sha1, &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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return 1; |
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} |
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if (print) { |
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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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return 0; |
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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, delete = 0, shorten = 0, ret = 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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N_("suppress error message for non-symbolic (detached) refs")), |
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OPT_BOOL('d', "delete", &delete, N_("delete symbolic ref")), |
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OPT_BOOL(0, "short", &shorten, N_("shorten ref output")), |
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OPT_STRING('m', NULL, &msg, N_("reason"), N_("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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if (delete) { |
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if (argc != 1) |
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usage_with_options(git_symbolic_ref_usage, options); |
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ret = check_symref(argv[0], 1, 0, 0); |
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if (ret) |
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die("Cannot delete %s, not a symbolic ref", argv[0]); |
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return delete_ref(argv[0], NULL, REF_NODEREF); |
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} |
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switch (argc) { |
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case 1: |
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ret = check_symref(argv[0], quiet, shorten, 1); |
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break; |
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case 2: |
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if (!strcmp(argv[0], "HEAD") && |
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!starts_with(argv[1], "refs/")) |
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die("Refusing to point HEAD outside of refs/"); |
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ret = !!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 ret; |
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}
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