configure: Detect linking style for HP aCC on HP-UX
[gitweb.git] / midx.c
diff --git a/midx.c b/midx.c
index f1137eb6ee7bb2d16062399965671cfda0e95e52..e7e1fe4d65ac3be54154e44ff07cd6122011405c 100644 (file)
--- a/midx.c
+++ b/midx.c
@@ -192,18 +192,17 @@ void close_midx(struct multi_pack_index *m)
        m->fd = -1;
 
        for (i = 0; i < m->num_packs; i++) {
-               if (m->packs[i]) {
-                       close_pack(m->packs[i]);
-                       free(m->packs[i]);
-               }
+               if (m->packs[i])
+                       m->packs[i]->multi_pack_index = 0;
        }
        FREE_AND_NULL(m->packs);
        FREE_AND_NULL(m->pack_names);
 }
 
-int prepare_midx_pack(struct multi_pack_index *m, uint32_t pack_int_id)
+int prepare_midx_pack(struct repository *r, struct multi_pack_index *m, uint32_t pack_int_id)
 {
        struct strbuf pack_name = STRBUF_INIT;
+       struct packed_git *p;
 
        if (pack_int_id >= m->num_packs)
                die(_("bad pack-int-id: %u (%u total packs)"),
@@ -215,9 +214,18 @@ int prepare_midx_pack(struct multi_pack_index *m, uint32_t pack_int_id)
        strbuf_addf(&pack_name, "%s/pack/%s", m->object_dir,
                    m->pack_names[pack_int_id]);
 
-       m->packs[pack_int_id] = add_packed_git(pack_name.buf, pack_name.len, m->local);
+       p = add_packed_git(pack_name.buf, pack_name.len, m->local);
        strbuf_release(&pack_name);
-       return !m->packs[pack_int_id];
+
+       if (!p)
+               return 1;
+
+       p->multi_pack_index = 1;
+       m->packs[pack_int_id] = p;
+       install_packed_git(r, p);
+       list_add_tail(&p->mru, &r->objects->packed_git_mru);
+
+       return 0;
 }
 
 int bsearch_midx(const struct object_id *oid, struct multi_pack_index *m, uint32_t *result)
@@ -261,7 +269,10 @@ static uint32_t nth_midxed_pack_int_id(struct multi_pack_index *m, uint32_t pos)
        return get_be32(m->chunk_object_offsets + pos * MIDX_CHUNK_OFFSET_WIDTH);
 }
 
-static int nth_midxed_pack_entry(struct multi_pack_index *m, struct pack_entry *e, uint32_t pos)
+static int nth_midxed_pack_entry(struct repository *r,
+                                struct multi_pack_index *m,
+                                struct pack_entry *e,
+                                uint32_t pos)
 {
        uint32_t pack_int_id;
        struct packed_git *p;
@@ -271,7 +282,7 @@ static int nth_midxed_pack_entry(struct multi_pack_index *m, struct pack_entry *
 
        pack_int_id = nth_midxed_pack_int_id(m, pos);
 
-       if (prepare_midx_pack(m, pack_int_id))
+       if (prepare_midx_pack(r, m, pack_int_id))
                die(_("error preparing packfile from multi-pack-index"));
        p = m->packs[pack_int_id];
 
@@ -301,17 +312,52 @@ static int nth_midxed_pack_entry(struct multi_pack_index *m, struct pack_entry *
        return 1;
 }
 
-int fill_midx_entry(const struct object_id *oid, struct pack_entry *e, struct multi_pack_index *m)
+int fill_midx_entry(struct repository * r,
+                   const struct object_id *oid,
+                   struct pack_entry *e,
+                   struct multi_pack_index *m)
 {
        uint32_t pos;
 
        if (!bsearch_midx(oid, m, &pos))
                return 0;
 
-       return nth_midxed_pack_entry(m, e, pos);
+       return nth_midxed_pack_entry(r, m, e, pos);
+}
+
+/* Match "foo.idx" against either "foo.pack" _or_ "foo.idx". */
+static int cmp_idx_or_pack_name(const char *idx_or_pack_name,
+                               const char *idx_name)
+{
+       /* Skip past any initial matching prefix. */
+       while (*idx_name && *idx_name == *idx_or_pack_name) {
+               idx_name++;
+               idx_or_pack_name++;
+       }
+
+       /*
+        * If we didn't match completely, we may have matched "pack-1234." and
+        * be left with "idx" and "pack" respectively, which is also OK. We do
+        * not have to check for "idx" and "idx", because that would have been
+        * a complete match (and in that case these strcmps will be false, but
+        * we'll correctly return 0 from the final strcmp() below.
+        *
+        * Technically this matches "fooidx" and "foopack", but we'd never have
+        * such names in the first place.
+        */
+       if (!strcmp(idx_name, "idx") && !strcmp(idx_or_pack_name, "pack"))
+               return 0;
+
+       /*
+        * This not only checks for a complete match, but also orders based on
+        * the first non-identical character, which means our ordering will
+        * match a raw strcmp(). That makes it OK to use this to binary search
+        * a naively-sorted list.
+        */
+       return strcmp(idx_or_pack_name, idx_name);
 }
 
-int midx_contains_pack(struct multi_pack_index *m, const char *idx_name)
+int midx_contains_pack(struct multi_pack_index *m, const char *idx_or_pack_name)
 {
        uint32_t first = 0, last = m->num_packs;
 
@@ -321,7 +367,7 @@ int midx_contains_pack(struct multi_pack_index *m, const char *idx_name)
                int cmp;
 
                current = m->pack_names[mid];
-               cmp = strcmp(idx_name, current);
+               cmp = cmp_idx_or_pack_name(idx_or_pack_name, current);
                if (!cmp)
                        return 1;
                if (cmp > 0) {
@@ -988,7 +1034,7 @@ static int compare_pair_pos_vs_id(const void *_a, const void *_b)
                        display_progress(progress, _n); \
        } while (0)
 
-int verify_midx_file(const char *object_dir)
+int verify_midx_file(struct repository *r, const char *object_dir)
 {
        struct pair_pos_vs_id *pairs = NULL;
        uint32_t i;
@@ -1002,7 +1048,7 @@ int verify_midx_file(const char *object_dir)
        progress = start_progress(_("Looking for referenced packfiles"),
                                  m->num_packs);
        for (i = 0; i < m->num_packs; i++) {
-               if (prepare_midx_pack(m, i))
+               if (prepare_midx_pack(r, m, i))
                        midx_report("failed to load pack in position %d", i);
 
                display_progress(progress, i + 1);
@@ -1067,7 +1113,7 @@ int verify_midx_file(const char *object_dir)
 
                nth_midxed_object_oid(&oid, m, pairs[i].pos);
 
-               if (!fill_midx_entry(&oid, &e, m)) {
+               if (!fill_midx_entry(r, &oid, &e, m)) {
                        midx_report(_("failed to load pack entry for oid[%d] = %s"),
                                    pairs[i].pos, oid_to_hex(&oid));
                        continue;