| #include "cache.h" |
| |
| const signed char hexval_table[256] = { |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 00-07 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 08-0f */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 10-17 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 18-1f */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 20-27 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 28-2f */ |
| 0, 1, 2, 3, 4, 5, 6, 7, /* 30-37 */ |
| 8, 9, -1, -1, -1, -1, -1, -1, /* 38-3f */ |
| -1, 10, 11, 12, 13, 14, 15, -1, /* 40-47 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 48-4f */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 50-57 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 58-5f */ |
| -1, 10, 11, 12, 13, 14, 15, -1, /* 60-67 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 68-67 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 70-77 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 78-7f */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 80-87 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 88-8f */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 90-97 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 98-9f */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* a0-a7 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* a8-af */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* b0-b7 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* b8-bf */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* c0-c7 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* c8-cf */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* d0-d7 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* d8-df */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* e0-e7 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* e8-ef */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* f0-f7 */ |
| -1, -1, -1, -1, -1, -1, -1, -1, /* f8-ff */ |
| }; |
| |
| int get_sha1_hex(const char *hex, unsigned char *sha1) |
| { |
| int i; |
| for (i = 0; i < GIT_SHA1_RAWSZ; i++) { |
| unsigned int val; |
| /* |
| * hex[1]=='\0' is caught when val is checked below, |
| * but if hex[0] is NUL we have to avoid reading |
| * past the end of the string: |
| */ |
| if (!hex[0]) |
| return -1; |
| val = (hexval(hex[0]) << 4) | hexval(hex[1]); |
| if (val & ~0xff) |
| return -1; |
| *sha1++ = val; |
| hex += 2; |
| } |
| return 0; |
| } |
| |
| int get_oid_hex(const char *hex, struct object_id *oid) |
| { |
| return get_sha1_hex(hex, oid->hash); |
| } |
| |
| char *sha1_to_hex(const unsigned char *sha1) |
| { |
| static int bufno; |
| static char hexbuffer[4][GIT_SHA1_HEXSZ + 1]; |
| static const char hex[] = "0123456789abcdef"; |
| char *buffer = hexbuffer[3 & ++bufno], *buf = buffer; |
| int i; |
| |
| for (i = 0; i < GIT_SHA1_RAWSZ; i++) { |
| unsigned int val = *sha1++; |
| *buf++ = hex[val >> 4]; |
| *buf++ = hex[val & 0xf]; |
| } |
| *buf = '\0'; |
| |
| return buffer; |
| } |
| |
| char *oid_to_hex(const struct object_id *oid) |
| { |
| return sha1_to_hex(oid->hash); |
| } |