| #include "cache.h" |
| #include "exec_cmd.h" |
| |
| static void flush_current_id(int patchlen, unsigned char *id, git_SHA_CTX *c) |
| { |
| unsigned char result[20]; |
| char name[50]; |
| |
| if (!patchlen) |
| return; |
| |
| git_SHA1_Final(result, c); |
| memcpy(name, sha1_to_hex(id), 41); |
| printf("%s %s\n", sha1_to_hex(result), name); |
| git_SHA1_Init(c); |
| } |
| |
| static int remove_space(char *line) |
| { |
| char *src = line; |
| char *dst = line; |
| unsigned char c; |
| |
| while ((c = *src++) != '\0') { |
| if (!isspace(c)) |
| *dst++ = c; |
| } |
| return dst - line; |
| } |
| |
| static void generate_id_list(void) |
| { |
| static unsigned char sha1[20]; |
| static char line[1000]; |
| git_SHA_CTX ctx; |
| int patchlen = 0; |
| |
| git_SHA1_Init(&ctx); |
| while (fgets(line, sizeof(line), stdin) != NULL) { |
| unsigned char n[20]; |
| char *p = line; |
| int len; |
| |
| if (!memcmp(line, "diff-tree ", 10)) |
| p += 10; |
| else if (!memcmp(line, "commit ", 7)) |
| p += 7; |
| |
| if (!get_sha1_hex(p, n)) { |
| flush_current_id(patchlen, sha1, &ctx); |
| hashcpy(sha1, n); |
| patchlen = 0; |
| continue; |
| } |
| |
| /* Ignore commit comments */ |
| if (!patchlen && memcmp(line, "diff ", 5)) |
| continue; |
| |
| /* Ignore git-diff index header */ |
| if (!memcmp(line, "index ", 6)) |
| continue; |
| |
| /* Ignore line numbers when computing the SHA1 of the patch */ |
| if (!memcmp(line, "@@ -", 4)) |
| continue; |
| |
| /* Compute the sha without whitespace */ |
| len = remove_space(line); |
| patchlen += len; |
| git_SHA1_Update(&ctx, line, len); |
| } |
| flush_current_id(patchlen, sha1, &ctx); |
| } |
| |
| static const char patch_id_usage[] = "git patch-id < patch"; |
| |
| int main(int argc, char **argv) |
| { |
| if (argc != 1) |
| usage(patch_id_usage); |
| |
| git_extract_argv0_path(argv[0]); |
| |
| generate_id_list(); |
| return 0; |
| } |