Andrew's git - gitweb.git/blob

   1#include "cache.h"
   2
   3const signed char hexval_table[256] = {
   4         -1, -1, -1, -1, -1, -1, -1, -1,                /* 00-07 */
   5         -1, -1, -1, -1, -1, -1, -1, -1,                /* 08-0f */
   6         -1, -1, -1, -1, -1, -1, -1, -1,                /* 10-17 */
   7         -1, -1, -1, -1, -1, -1, -1, -1,                /* 18-1f */
   8         -1, -1, -1, -1, -1, -1, -1, -1,                /* 20-27 */
   9         -1, -1, -1, -1, -1, -1, -1, -1,                /* 28-2f */
  10          0,  1,  2,  3,  4,  5,  6,  7,                /* 30-37 */
  11          8,  9, -1, -1, -1, -1, -1, -1,                /* 38-3f */
  12         -1, 10, 11, 12, 13, 14, 15, -1,                /* 40-47 */
  13         -1, -1, -1, -1, -1, -1, -1, -1,                /* 48-4f */
  14         -1, -1, -1, -1, -1, -1, -1, -1,                /* 50-57 */
  15         -1, -1, -1, -1, -1, -1, -1, -1,                /* 58-5f */
  16         -1, 10, 11, 12, 13, 14, 15, -1,                /* 60-67 */
  17         -1, -1, -1, -1, -1, -1, -1, -1,                /* 68-67 */
  18         -1, -1, -1, -1, -1, -1, -1, -1,                /* 70-77 */
  19         -1, -1, -1, -1, -1, -1, -1, -1,                /* 78-7f */
  20         -1, -1, -1, -1, -1, -1, -1, -1,                /* 80-87 */
  21         -1, -1, -1, -1, -1, -1, -1, -1,                /* 88-8f */
  22         -1, -1, -1, -1, -1, -1, -1, -1,                /* 90-97 */
  23         -1, -1, -1, -1, -1, -1, -1, -1,                /* 98-9f */
  24         -1, -1, -1, -1, -1, -1, -1, -1,                /* a0-a7 */
  25         -1, -1, -1, -1, -1, -1, -1, -1,                /* a8-af */
  26         -1, -1, -1, -1, -1, -1, -1, -1,                /* b0-b7 */
  27         -1, -1, -1, -1, -1, -1, -1, -1,                /* b8-bf */
  28         -1, -1, -1, -1, -1, -1, -1, -1,                /* c0-c7 */
  29         -1, -1, -1, -1, -1, -1, -1, -1,                /* c8-cf */
  30         -1, -1, -1, -1, -1, -1, -1, -1,                /* d0-d7 */
  31         -1, -1, -1, -1, -1, -1, -1, -1,                /* d8-df */
  32         -1, -1, -1, -1, -1, -1, -1, -1,                /* e0-e7 */
  33         -1, -1, -1, -1, -1, -1, -1, -1,                /* e8-ef */
  34         -1, -1, -1, -1, -1, -1, -1, -1,                /* f0-f7 */
  35         -1, -1, -1, -1, -1, -1, -1, -1,                /* f8-ff */
  36};
  37
  38int get_sha1_hex(const char *hex, unsigned char *sha1)
  39{
  40        int i;
  41        for (i = 0; i < GIT_SHA1_RAWSZ; i++) {
  42                int val = hex2chr(hex);
  43                if (val < 0)
  44                        return -1;
  45                *sha1++ = val;
  46                hex += 2;
  47        }
  48        return 0;
  49}
  50
  51int get_oid_hex(const char *hex, struct object_id *oid)
  52{
  53        return get_sha1_hex(hex, oid->hash);
  54}
  55
  56char *sha1_to_hex_r(char *buffer, const unsigned char *sha1)
  57{
  58        static const char hex[] = "0123456789abcdef";
  59        char *buf = buffer;
  60        int i;
  61
  62        for (i = 0; i < GIT_SHA1_RAWSZ; i++) {
  63                unsigned int val = *sha1++;
  64                *buf++ = hex[val >> 4];
  65                *buf++ = hex[val & 0xf];
  66        }
  67        *buf = '\0';
  68
  69        return buffer;
  70}
  71
  72char *oid_to_hex_r(char *buffer, const struct object_id *oid)
  73{
  74        return sha1_to_hex_r(buffer, oid->hash);
  75}
  76
  77char *sha1_to_hex(const unsigned char *sha1)
  78{
  79        static int bufno;
  80        static char hexbuffer[4][GIT_SHA1_HEXSZ + 1];
  81        return sha1_to_hex_r(hexbuffer[3 & ++bufno], sha1);
  82}
  83
  84char *oid_to_hex(const struct object_id *oid)
  85{
  86        return sha1_to_hex(oid->hash);
  87}