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Commit | Line | Data |
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a5031214 LT |
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 get_sha1_hex(const char *hex, unsigned char *sha1) | |
39 | { | |
40 | int i; | |
aa1c6fdf | 41 | for (i = 0; i < GIT_SHA1_RAWSZ; i++) { |
d4e85a1a MH |
42 | unsigned int val; |
43 | /* | |
44 | * hex[1]=='\0' is caught when val is checked below, | |
45 | * but if hex[0] is NUL we have to avoid reading | |
46 | * past the end of the string: | |
47 | */ | |
48 | if (!hex[0]) | |
49 | return -1; | |
50 | val = (hexval(hex[0]) << 4) | hexval(hex[1]); | |
a5031214 LT |
51 | if (val & ~0xff) |
52 | return -1; | |
53 | *sha1++ = val; | |
54 | hex += 2; | |
55 | } | |
56 | return 0; | |
57 | } | |
58 | ||
aa1c6fdf | 59 | int get_oid_hex(const char *hex, struct object_id *oid) |
60 | { | |
61 | return get_sha1_hex(hex, oid->hash); | |
62 | } | |
63 | ||
af49c6d0 | 64 | char *sha1_to_hex_r(char *buffer, const unsigned char *sha1) |
a5031214 | 65 | { |
a5031214 | 66 | static const char hex[] = "0123456789abcdef"; |
af49c6d0 | 67 | char *buf = buffer; |
a5031214 LT |
68 | int i; |
69 | ||
aa1c6fdf | 70 | for (i = 0; i < GIT_SHA1_RAWSZ; i++) { |
a5031214 LT |
71 | unsigned int val = *sha1++; |
72 | *buf++ = hex[val >> 4]; | |
73 | *buf++ = hex[val & 0xf]; | |
74 | } | |
75 | *buf = '\0'; | |
76 | ||
77 | return buffer; | |
78 | } | |
aa1c6fdf | 79 | |
af49c6d0 JK |
80 | char *sha1_to_hex(const unsigned char *sha1) |
81 | { | |
82 | static int bufno; | |
83 | static char hexbuffer[4][GIT_SHA1_HEXSZ + 1]; | |
84 | return sha1_to_hex_r(hexbuffer[3 & ++bufno], sha1); | |
85 | } | |
86 | ||
aa1c6fdf | 87 | char *oid_to_hex(const struct object_id *oid) |
88 | { | |
89 | return sha1_to_hex(oid->hash); | |
90 | } |