diff options
Diffstat (limited to 'repack.c')
| -rw-r--r-- | repack.c | 157 |
1 files changed, 157 insertions, 0 deletions
@@ -1,4 +1,5 @@ #include "git-compat-util.h" +#include "dir.h" #include "midx.h" #include "odb.h" #include "packfile.h" @@ -62,3 +63,159 @@ void repack_remove_redundant_pack(struct repository *repo, const char *dir_name, unlink_pack_path(buf.buf, 1); strbuf_release(&buf); } + +#define DELETE_PACK 1 +#define RETAIN_PACK 2 + +void existing_packs_collect(struct existing_packs *existing, + const struct string_list *extra_keep) +{ + struct packfile_store *packs = existing->repo->objects->packfiles; + struct packed_git *p; + struct strbuf buf = STRBUF_INIT; + + for (p = packfile_store_get_all_packs(packs); p; p = p->next) { + size_t i; + const char *base; + + if (!p->pack_local) + continue; + + base = pack_basename(p); + + for (i = 0; i < extra_keep->nr; i++) + if (!fspathcmp(base, extra_keep->items[i].string)) + break; + + strbuf_reset(&buf); + strbuf_addstr(&buf, base); + strbuf_strip_suffix(&buf, ".pack"); + + if ((extra_keep->nr > 0 && i < extra_keep->nr) || p->pack_keep) + string_list_append(&existing->kept_packs, buf.buf); + else if (p->is_cruft) + string_list_append(&existing->cruft_packs, buf.buf); + else + string_list_append(&existing->non_kept_packs, buf.buf); + } + + string_list_sort(&existing->kept_packs); + string_list_sort(&existing->non_kept_packs); + string_list_sort(&existing->cruft_packs); + strbuf_release(&buf); +} + +int existing_packs_has_non_kept(const struct existing_packs *existing) +{ + return existing->non_kept_packs.nr || existing->cruft_packs.nr; +} + +static void existing_pack_mark_for_deletion(struct string_list_item *item) +{ + item->util = (void*)((uintptr_t)item->util | DELETE_PACK); +} + +static void existing_pack_unmark_for_deletion(struct string_list_item *item) +{ + item->util = (void*)((uintptr_t)item->util & ~DELETE_PACK); +} + +int existing_pack_is_marked_for_deletion(struct string_list_item *item) +{ + return (uintptr_t)item->util & DELETE_PACK; +} + +static void existing_packs_mark_retained(struct string_list_item *item) +{ + item->util = (void*)((uintptr_t)item->util | RETAIN_PACK); +} + +static int existing_pack_is_retained(struct string_list_item *item) +{ + return (uintptr_t)item->util & RETAIN_PACK; +} + +static void existing_packs_mark_for_deletion_1(const struct git_hash_algo *algop, + struct string_list *names, + struct string_list *list) +{ + struct string_list_item *item; + const size_t hexsz = algop->hexsz; + + for_each_string_list_item(item, list) { + char *sha1; + size_t len = strlen(item->string); + if (len < hexsz) + continue; + sha1 = item->string + len - hexsz; + + if (existing_pack_is_retained(item)) { + existing_pack_unmark_for_deletion(item); + } else if (!string_list_has_string(names, sha1)) { + /* + * Mark this pack for deletion, which ensures + * that this pack won't be included in a MIDX + * (if `--write-midx` was given) and that we + * will actually delete this pack (if `-d` was + * given). + */ + existing_pack_mark_for_deletion(item); + } + } +} + +void existing_packs_retain_cruft(struct existing_packs *existing, + struct packed_git *cruft) +{ + struct strbuf buf = STRBUF_INIT; + struct string_list_item *item; + + strbuf_addstr(&buf, pack_basename(cruft)); + strbuf_strip_suffix(&buf, ".pack"); + + item = string_list_lookup(&existing->cruft_packs, buf.buf); + if (!item) + BUG("could not find cruft pack '%s'", pack_basename(cruft)); + + existing_packs_mark_retained(item); + strbuf_release(&buf); +} + +void existing_packs_mark_for_deletion(struct existing_packs *existing, + struct string_list *names) + +{ + const struct git_hash_algo *algop = existing->repo->hash_algo; + existing_packs_mark_for_deletion_1(algop, names, + &existing->non_kept_packs); + existing_packs_mark_for_deletion_1(algop, names, + &existing->cruft_packs); +} + +static void remove_redundant_packs_1(struct repository *repo, + struct string_list *packs, + const char *packdir) +{ + struct string_list_item *item; + for_each_string_list_item(item, packs) { + if (!existing_pack_is_marked_for_deletion(item)) + continue; + repack_remove_redundant_pack(repo, packdir, item->string); + } +} + +void existing_packs_remove_redundant(struct existing_packs *existing, + const char *packdir) +{ + remove_redundant_packs_1(existing->repo, &existing->non_kept_packs, + packdir); + remove_redundant_packs_1(existing->repo, &existing->cruft_packs, + packdir); +} + +void existing_packs_release(struct existing_packs *existing) +{ + string_list_clear(&existing->kept_packs, 0); + string_list_clear(&existing->non_kept_packs, 0); + string_list_clear(&existing->cruft_packs, 0); +} |