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fast-import: use write_idx_file() instead of custom code
This allows for the creation of pack index version 2 with its object CRC and the possibility for a pack to be larger than 4 GB. Signed-off-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -854,67 +854,30 @@ static void start_packfile(void)
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all_packs[pack_id] = p;
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}
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static int oecmp (const void *a_, const void *b_)
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static const char *create_index(void)
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{
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struct object_entry *a = *((struct object_entry**)a_);
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struct object_entry *b = *((struct object_entry**)b_);
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return hashcmp(a->idx.sha1, b->idx.sha1);
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}
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static char *create_index(void)
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{
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static char tmpfile[PATH_MAX];
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git_SHA_CTX ctx;
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struct sha1file *f;
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struct object_entry **idx, **c, **last, *e;
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const char *tmpfile;
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struct pack_idx_entry **idx, **c, **last;
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struct object_entry *e;
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struct object_entry_pool *o;
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uint32_t array[256];
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int i, idx_fd;
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/* Build the sorted table of object IDs. */
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idx = xmalloc(object_count * sizeof(struct object_entry*));
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/* Build the table of object IDs. */
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idx = xmalloc(object_count * sizeof(*idx));
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c = idx;
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for (o = blocks; o; o = o->next_pool)
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for (e = o->next_free; e-- != o->entries;)
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if (pack_id == e->pack_id)
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*c++ = e;
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*c++ = &e->idx;
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last = idx + object_count;
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if (c != last)
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die("internal consistency error creating the index");
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qsort(idx, object_count, sizeof(struct object_entry*), oecmp);
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/* Generate the fan-out array. */
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c = idx;
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for (i = 0; i < 256; i++) {
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struct object_entry **next = c;
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while (next < last) {
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if ((*next)->idx.sha1[0] != i)
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break;
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next++;
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}
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array[i] = htonl(next - idx);
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c = next;
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}
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idx_fd = odb_mkstemp(tmpfile, sizeof(tmpfile),
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"pack/tmp_idx_XXXXXX");
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f = sha1fd(idx_fd, tmpfile);
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sha1write(f, array, 256 * sizeof(int));
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git_SHA1_Init(&ctx);
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for (c = idx; c != last; c++) {
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uint32_t offset = htonl((*c)->idx.offset);
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sha1write(f, &offset, 4);
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sha1write(f, (*c)->idx.sha1, sizeof((*c)->idx.sha1));
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git_SHA1_Update(&ctx, (*c)->idx.sha1, 20);
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}
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sha1write(f, pack_data->sha1, sizeof(pack_data->sha1));
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sha1close(f, NULL, CSUM_FSYNC);
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tmpfile = write_idx_file(NULL, idx, object_count, pack_data->sha1);
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free(idx);
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git_SHA1_Final(pack_data->sha1, &ctx);
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return tmpfile;
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}
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static char *keep_pack(char *curr_index_name)
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static char *keep_pack(const char *curr_index_name)
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{
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static char name[PATH_MAX];
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static const char *keep_msg = "fast-import";
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@ -936,6 +899,7 @@ static char *keep_pack(char *curr_index_name)
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get_object_directory(), sha1_to_hex(pack_data->sha1));
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if (move_temp_to_file(curr_index_name, name))
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die("cannot store index file");
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free((void *)curr_index_name);
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return name;
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}
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@ -1134,6 +1098,8 @@ static int store_object(
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object_count++;
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object_count_by_type[type]++;
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crc32_begin(pack_file);
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if (delta) {
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unsigned long ofs = e->idx.offset - last->offset;
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unsigned pos = sizeof(hdr) - 1;
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@ -1160,6 +1126,8 @@ static int store_object(
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sha1write(pack_file, out, s.total_out);
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pack_size += s.total_out;
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e->idx.crc32 = crc32_end(pack_file);
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free(out);
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free(delta);
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if (last) {
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@ -1219,6 +1187,8 @@ static void stream_blob(uintmax_t len, unsigned char *sha1out, uintmax_t mark)
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git_SHA1_Init(&c);
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git_SHA1_Update(&c, out_buf, hdrlen);
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crc32_begin(pack_file);
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memset(&s, 0, sizeof(s));
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deflateInit(&s, pack_compression_level);
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@ -1288,6 +1258,7 @@ static void stream_blob(uintmax_t len, unsigned char *sha1out, uintmax_t mark)
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e->type = OBJ_BLOB;
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e->pack_id = pack_id;
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e->idx.offset = offset;
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e->idx.crc32 = crc32_end(pack_file);
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object_count++;
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object_count_by_type[OBJ_BLOB]++;
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}
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