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Commit | Line | Data |
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f9767222 | 1 | #include "cache.h" |
2fb3f6db | 2 | #include "exec_cmd.h" |
f9767222 | 3 | |
9126f009 | 4 | static void flush_current_id(int patchlen, unsigned char *id, git_SHA_CTX *c) |
f9767222 LT |
5 | { |
6 | unsigned char result[20]; | |
7 | char name[50]; | |
8 | ||
9 | if (!patchlen) | |
10 | return; | |
11 | ||
9126f009 | 12 | git_SHA1_Final(result, c); |
f9767222 LT |
13 | memcpy(name, sha1_to_hex(id), 41); |
14 | printf("%s %s\n", sha1_to_hex(result), name); | |
9126f009 | 15 | git_SHA1_Init(c); |
f9767222 LT |
16 | } |
17 | ||
18 | static int remove_space(char *line) | |
19 | { | |
20 | char *src = line; | |
21 | char *dst = line; | |
22 | unsigned char c; | |
23 | ||
24 | while ((c = *src++) != '\0') { | |
25 | if (!isspace(c)) | |
26 | *dst++ = c; | |
27 | } | |
28 | return dst - line; | |
29 | } | |
30 | ||
31 | static void generate_id_list(void) | |
32 | { | |
33 | static unsigned char sha1[20]; | |
34 | static char line[1000]; | |
9126f009 | 35 | git_SHA_CTX ctx; |
f9767222 LT |
36 | int patchlen = 0; |
37 | ||
9126f009 | 38 | git_SHA1_Init(&ctx); |
f9767222 LT |
39 | while (fgets(line, sizeof(line), stdin) != NULL) { |
40 | unsigned char n[20]; | |
41 | char *p = line; | |
42 | int len; | |
43 | ||
44 | if (!memcmp(line, "diff-tree ", 10)) | |
45 | p += 10; | |
8d3cbd27 JS |
46 | else if (!memcmp(line, "commit ", 7)) |
47 | p += 7; | |
f9767222 LT |
48 | |
49 | if (!get_sha1_hex(p, n)) { | |
50 | flush_current_id(patchlen, sha1, &ctx); | |
e702496e | 51 | hashcpy(sha1, n); |
f9767222 LT |
52 | patchlen = 0; |
53 | continue; | |
54 | } | |
55 | ||
56 | /* Ignore commit comments */ | |
57 | if (!patchlen && memcmp(line, "diff ", 5)) | |
58 | continue; | |
59 | ||
9fabdedc KR |
60 | /* Ignore git-diff index header */ |
61 | if (!memcmp(line, "index ", 6)) | |
62 | continue; | |
63 | ||
f9767222 LT |
64 | /* Ignore line numbers when computing the SHA1 of the patch */ |
65 | if (!memcmp(line, "@@ -", 4)) | |
66 | continue; | |
67 | ||
68 | /* Compute the sha without whitespace */ | |
69 | len = remove_space(line); | |
70 | patchlen += len; | |
9126f009 | 71 | git_SHA1_Update(&ctx, line, len); |
f9767222 LT |
72 | } |
73 | flush_current_id(patchlen, sha1, &ctx); | |
74 | } | |
75 | ||
34263de0 | 76 | static const char patch_id_usage[] = "git patch-id < patch"; |
f9767222 | 77 | |
dedc0ec5 | 78 | int cmd_patch_id(int argc, const char **argv, const char *prefix) |
f9767222 LT |
79 | { |
80 | if (argc != 1) | |
81 | usage(patch_id_usage); | |
82 | ||
83 | generate_id_list(); | |
84 | return 0; | |
a6080a0a | 85 | } |