| #include "cache.h" |
| #include "pack.h" |
| |
| int main(int argc, char **argv) |
| { |
| int i; |
| unsigned nr; |
| unsigned int version; |
| static unsigned int top_index[256]; |
| |
| if (fread(top_index, 2 * 4, 1, stdin) != 1) |
| die("unable to read header"); |
| if (top_index[0] == htonl(PACK_IDX_SIGNATURE)) { |
| version = ntohl(top_index[1]); |
| if (version < 2 || version > 2) |
| die("unknown index version"); |
| if (fread(top_index, 256 * 4, 1, stdin) != 1) |
| die("unable to read index"); |
| } else { |
| version = 1; |
| if (fread(&top_index[2], 254 * 4, 1, stdin) != 1) |
| die("unable to read index"); |
| } |
| nr = 0; |
| for (i = 0; i < 256; i++) { |
| unsigned n = ntohl(top_index[i]); |
| if (n < nr) |
| die("corrupt index file"); |
| nr = n; |
| } |
| if (version == 1) { |
| for (i = 0; i < nr; i++) { |
| unsigned int offset, entry[6]; |
| |
| if (fread(entry, 4 + 20, 1, stdin) != 1) |
| die("unable to read entry %u/%u", i, nr); |
| offset = ntohl(entry[0]); |
| printf("%u %s\n", offset, sha1_to_hex((void *)(entry+1))); |
| } |
| } else { |
| unsigned off64_nr = 0; |
| struct { |
| unsigned char sha1[20]; |
| uint32_t crc; |
| uint32_t off; |
| } *entries = xmalloc(nr * sizeof(entries[0])); |
| for (i = 0; i < nr; i++) |
| if (fread(entries[i].sha1, 20, 1, stdin) != 1) |
| die("unable to read sha1 %u/%u", i, nr); |
| for (i = 0; i < nr; i++) |
| if (fread(&entries[i].crc, 4, 1, stdin) != 1) |
| die("unable to read crc %u/%u", i, nr); |
| for (i = 0; i < nr; i++) |
| if (fread(&entries[i].off, 4, 1, stdin) != 1) |
| die("unable to read 32b offset %u/%u", i, nr); |
| for (i = 0; i < nr; i++) { |
| uint64_t offset; |
| uint32_t off = ntohl(entries[i].off); |
| if (!(off & 0x80000000)) { |
| offset = off; |
| } else { |
| uint32_t off64[2]; |
| if ((off & 0x7fffffff) != off64_nr) |
| die("inconsistent 64b offset index"); |
| if (fread(off64, 8, 1, stdin) != 1) |
| die("unable to read 64b offset %u", off64_nr); |
| offset = (((uint64_t)ntohl(off64[0])) << 32) | |
| ntohl(off64[1]); |
| off64_nr++; |
| } |
| printf("%" PRIuMAX " %s (%08"PRIx32")\n", |
| (uintmax_t) offset, |
| sha1_to_hex(entries[i].sha1), |
| ntohl(entries[i].crc)); |
| } |
| free(entries); |
| } |
| return 0; |
| } |