pack-revindex: store entries directly in packed_git
[git/git.git] / pack-revindex.c
index 8e63dbc..155a8a3 100644 (file)
@@ -115,14 +115,13 @@ static void sort_revindex(struct revindex_entry *entries, unsigned n, off_t max)
 /*
  * Ordered list of offsets of objects in the pack.
  */
-static void create_pack_revindex(struct pack_revindex *rix)
+static void create_pack_revindex(struct packed_git *p)
 {
-       struct packed_git *p = rix->p;
        unsigned num_ent = p->num_objects;
        unsigned i;
        const char *index = p->index_data;
 
-       rix->revindex = xmalloc(sizeof(*rix->revindex) * (num_ent + 1));
+       p->revindex = xmalloc(sizeof(*p->revindex) * (num_ent + 1));
        index += 4 * 256;
 
        if (p->index_version > 1) {
@@ -132,46 +131,42 @@ static void create_pack_revindex(struct pack_revindex *rix)
                for (i = 0; i < num_ent; i++) {
                        uint32_t off = ntohl(*off_32++);
                        if (!(off & 0x80000000)) {
-                               rix->revindex[i].offset = off;
+                               p->revindex[i].offset = off;
                        } else {
-                               rix->revindex[i].offset =
+                               p->revindex[i].offset =
                                        ((uint64_t)ntohl(*off_64++)) << 32;
-                               rix->revindex[i].offset |=
+                               p->revindex[i].offset |=
                                        ntohl(*off_64++);
                        }
-                       rix->revindex[i].nr = i;
+                       p->revindex[i].nr = i;
                }
        } else {
                for (i = 0; i < num_ent; i++) {
                        uint32_t hl = *((uint32_t *)(index + 24 * i));
-                       rix->revindex[i].offset = ntohl(hl);
-                       rix->revindex[i].nr = i;
+                       p->revindex[i].offset = ntohl(hl);
+                       p->revindex[i].nr = i;
                }
        }
 
        /* This knows the pack format -- the 20-byte trailer
         * follows immediately after the last object data.
         */
-       rix->revindex[num_ent].offset = p->pack_size - 20;
-       rix->revindex[num_ent].nr = -1;
-       sort_revindex(rix->revindex, num_ent, p->pack_size);
+       p->revindex[num_ent].offset = p->pack_size - 20;
+       p->revindex[num_ent].nr = -1;
+       sort_revindex(p->revindex, num_ent, p->pack_size);
 }
 
-struct pack_revindex *revindex_for_pack(struct packed_git *p)
+void load_pack_revindex(struct packed_git *p)
 {
-       struct pack_revindex *rix = &p->reverse_index;
-       if (!rix->revindex) {
-               rix->p = p;
-               create_pack_revindex(rix);
-       }
-       return rix;
+       if (!p->revindex)
+               create_pack_revindex(p);
 }
 
-int find_revindex_position(struct pack_revindex *pridx, off_t ofs)
+int find_revindex_position(struct packed_git *p, off_t ofs)
 {
        int lo = 0;
-       int hi = pridx->p->num_objects + 1;
-       struct revindex_entry *revindex = pridx->revindex;
+       int hi = p->num_objects + 1;
+       struct revindex_entry *revindex = p->revindex;
 
        do {
                unsigned mi = lo + (hi - lo) / 2;
@@ -189,11 +184,13 @@ int find_revindex_position(struct pack_revindex *pridx, off_t ofs)
 
 struct revindex_entry *find_pack_revindex(struct packed_git *p, off_t ofs)
 {
-       struct pack_revindex *pridx = revindex_for_pack(p);
-       int pos = find_revindex_position(pridx, ofs);
+       int pos;
+
+       load_pack_revindex(p);
+       pos = find_revindex_position(p, ofs);
 
        if (pos < 0)
                return NULL;
 
-       return pridx->revindex + pos;
+       return p->revindex + pos;
 }