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#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; }
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