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112 lines
2.5 KiB
112 lines
2.5 KiB
#include "cache.h" |
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#include "refs.h" |
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static const char *result_path, *lock_path; |
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static const char builtin_pack_refs_usage[] = |
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"git-pack-refs [--prune]"; |
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struct ref_to_prune { |
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struct ref_to_prune *next; |
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unsigned char sha1[20]; |
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char name[FLEX_ARRAY]; |
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}; |
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struct pack_refs_cb_data { |
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int prune; |
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struct ref_to_prune *ref_to_prune; |
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FILE *refs_file; |
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}; |
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static void remove_lock_file(void) |
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{ |
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if (lock_path) |
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unlink(lock_path); |
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} |
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static int do_not_prune(int flags) |
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{ |
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/* If it is already packed or if it is a symref, |
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* do not prune it. |
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*/ |
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return (flags & (REF_ISSYMREF|REF_ISPACKED)); |
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} |
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static int handle_one_ref(const char *path, const unsigned char *sha1, |
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int flags, void *cb_data) |
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{ |
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struct pack_refs_cb_data *cb = cb_data; |
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/* Do not pack the symbolic refs */ |
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if (!(flags & REF_ISSYMREF)) |
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fprintf(cb->refs_file, "%s %s\n", sha1_to_hex(sha1), path); |
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if (cb->prune && !do_not_prune(flags)) { |
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int namelen = strlen(path) + 1; |
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struct ref_to_prune *n = xcalloc(1, sizeof(*n) + namelen); |
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hashcpy(n->sha1, sha1); |
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strcpy(n->name, path); |
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n->next = cb->ref_to_prune; |
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cb->ref_to_prune = n; |
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} |
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return 0; |
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} |
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/* make sure nobody touched the ref, and unlink */ |
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static void prune_ref(struct ref_to_prune *r) |
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{ |
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struct ref_lock *lock = lock_ref_sha1(r->name + 5, r->sha1); |
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if (lock) { |
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unlink(git_path("%s", r->name)); |
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unlock_ref(lock); |
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} |
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} |
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static void prune_refs(struct ref_to_prune *r) |
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{ |
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while (r) { |
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prune_ref(r); |
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r = r->next; |
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} |
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} |
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int cmd_pack_refs(int argc, const char **argv, const char *prefix) |
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{ |
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int fd, i; |
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struct pack_refs_cb_data cbdata; |
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memset(&cbdata, 0, sizeof(cbdata)); |
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for (i = 1; i < argc; i++) { |
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const char *arg = argv[i]; |
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if (!strcmp(arg, "--prune")) { |
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cbdata.prune = 1; |
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continue; |
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} |
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/* perhaps other parameters later... */ |
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break; |
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} |
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if (i != argc) |
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usage(builtin_pack_refs_usage); |
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result_path = xstrdup(git_path("packed-refs")); |
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lock_path = xstrdup(mkpath("%s.lock", result_path)); |
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fd = open(lock_path, O_CREAT | O_EXCL | O_WRONLY, 0666); |
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if (fd < 0) |
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die("unable to create new ref-pack file (%s)", strerror(errno)); |
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atexit(remove_lock_file); |
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cbdata.refs_file = fdopen(fd, "w"); |
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if (!cbdata.refs_file) |
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die("unable to create ref-pack file structure (%s)", |
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strerror(errno)); |
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for_each_ref(handle_one_ref, &cbdata); |
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fsync(fd); |
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fclose(cbdata.refs_file); |
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if (rename(lock_path, result_path) < 0) |
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die("unable to overwrite old ref-pack file (%s)", strerror(errno)); |
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lock_path = NULL; |
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if (cbdata.prune) |
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prune_refs(cbdata.ref_to_prune); |
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return 0; |
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}
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