3 static void flush_current_id(int patchlen, unsigned char *id, git_SHA_CTX *c)
5 unsigned char result[20];
11 git_SHA1_Final(result, c);
12 memcpy(name, sha1_to_hex(id), 41);
13 printf("%s %s\n", sha1_to_hex(result), name);
17 static int remove_space(char *line)
23 while ((c = *src++) != '\0') {
30 static int scan_hunk_header(const char *p, int *p_before, int *p_after)
32 static const char digits[] = "0123456789";
37 n = strspn(q, digits);
40 n = strspn(q, digits);
42 if (n == 0 || q[n] != ' ' || q[n+1] != '+')
46 n = strspn(r, digits);
49 n = strspn(r, digits);
59 static int get_one_patchid(unsigned char *next_sha1, git_SHA_CTX *ctx)
61 static char line[1000];
62 int patchlen = 0, found_next = 0;
63 int before = -1, after = -1;
65 while (fgets(line, sizeof(line), stdin) != NULL) {
69 if (!memcmp(line, "diff-tree ", 10))
71 else if (!memcmp(line, "commit ", 7))
73 else if (!memcmp(line, "From ", 5))
75 else if (!memcmp(line, "\\ ", 2) && 12 < strlen(line))
78 if (!get_sha1_hex(p, next_sha1)) {
83 /* Ignore commit comments */
84 if (!patchlen && memcmp(line, "diff ", 5))
87 /* Parsing diff header? */
89 if (!memcmp(line, "index ", 6))
91 else if (!memcmp(line, "--- ", 4))
93 else if (!isalpha(line[0]))
97 /* Looking for a valid hunk header? */
98 if (before == 0 && after == 0) {
99 if (!memcmp(line, "@@ -", 4)) {
100 /* Parse next hunk, but ignore line numbers. */
101 scan_hunk_header(line, &before, &after);
105 /* Split at the end of the patch. */
106 if (memcmp(line, "diff ", 5))
109 /* Else we're parsing another header. */
113 /* If we get here, we're inside a hunk. */
114 if (line[0] == '-' || line[0] == ' ')
116 if (line[0] == '+' || line[0] == ' ')
119 /* Compute the sha without whitespace */
120 len = remove_space(line);
122 git_SHA1_Update(ctx, line, len);
131 static void generate_id_list(void)
133 unsigned char sha1[20], n[20];
139 while (!feof(stdin)) {
140 patchlen = get_one_patchid(n, &ctx);
141 flush_current_id(patchlen, sha1, &ctx);
146 static const char patch_id_usage[] = "git patch-id < patch";
148 int cmd_patch_id(int argc, const char **argv, const char *prefix)
151 usage(patch_id_usage);