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1 | #include "cache.h" | |
2 | ||
3 | const 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 | ||
38 | int hex_to_bytes(unsigned char *binary, const char *hex, size_t len) | |
39 | { | |
40 | for (; len; len--, hex += 2) { | |
41 | unsigned int val = (hexval(hex[0]) << 4) | hexval(hex[1]); | |
42 | ||
43 | if (val & ~0xff) | |
44 | return -1; | |
45 | *binary++ = val; | |
46 | } | |
47 | return 0; | |
48 | } | |
49 | ||
50 | int get_sha1_hex(const char *hex, unsigned char *sha1) | |
51 | { | |
52 | int i; | |
53 | for (i = 0; i < the_hash_algo->rawsz; i++) { | |
54 | int val = hex2chr(hex); | |
55 | if (val < 0) | |
56 | return -1; | |
57 | *sha1++ = val; | |
58 | hex += 2; | |
59 | } | |
60 | return 0; | |
61 | } | |
62 | ||
63 | int get_oid_hex(const char *hex, struct object_id *oid) | |
64 | { | |
65 | return get_sha1_hex(hex, oid->hash); | |
66 | } | |
67 | ||
68 | int parse_oid_hex(const char *hex, struct object_id *oid, const char **end) | |
69 | { | |
70 | int ret = get_oid_hex(hex, oid); | |
71 | if (!ret) | |
72 | *end = hex + the_hash_algo->hexsz; | |
73 | return ret; | |
74 | } | |
75 | ||
76 | char *hash_to_hex_algop_r(char *buffer, const unsigned char *hash, | |
77 | const struct git_hash_algo *algop) | |
78 | { | |
79 | static const char hex[] = "0123456789abcdef"; | |
80 | char *buf = buffer; | |
81 | int i; | |
82 | ||
83 | for (i = 0; i < algop->rawsz; i++) { | |
84 | unsigned int val = *hash++; | |
85 | *buf++ = hex[val >> 4]; | |
86 | *buf++ = hex[val & 0xf]; | |
87 | } | |
88 | *buf = '\0'; | |
89 | ||
90 | return buffer; | |
91 | } | |
92 | ||
93 | char *oid_to_hex_r(char *buffer, const struct object_id *oid) | |
94 | { | |
95 | return hash_to_hex_algop_r(buffer, oid->hash, the_hash_algo); | |
96 | } | |
97 | ||
98 | char *hash_to_hex_algop(const unsigned char *hash, const struct git_hash_algo *algop) | |
99 | { | |
100 | static int bufno; | |
101 | static char hexbuffer[4][GIT_MAX_HEXSZ + 1]; | |
102 | bufno = (bufno + 1) % ARRAY_SIZE(hexbuffer); | |
103 | return hash_to_hex_algop_r(hexbuffer[bufno], hash, algop); | |
104 | } | |
105 | ||
106 | char *hash_to_hex(const unsigned char *hash) | |
107 | { | |
108 | return hash_to_hex_algop(hash, the_hash_algo); | |
109 | } | |
110 | ||
111 | char *oid_to_hex(const struct object_id *oid) | |
112 | { | |
113 | return hash_to_hex_algop(oid->hash, the_hash_algo); | |
114 | } |