diff options
Diffstat (limited to 'diff-helper.c')
-rw-r--r-- | diff-helper.c | 153 |
1 files changed, 69 insertions, 84 deletions
diff --git a/diff-helper.c b/diff-helper.c index 108ca07ed0..d64d3baf99 100644 --- a/diff-helper.c +++ b/diff-helper.c @@ -8,88 +8,51 @@ static int detect_rename = 0; static int diff_score_opt = 0; -static int generate_patch = 1; static const char *pickaxe = NULL; +static int diff_output_style = DIFF_FORMAT_PATCH; +static int line_termination = '\n'; +static int inter_name_termination = '\t'; -static int parse_oneside_change(const char *cp, int *mode, - unsigned char *sha1, char *path) +static int parse_diff_raw(char *buf1, char *buf2, char *buf3) { - int ch, m; + char old_path[PATH_MAX]; + unsigned char old_sha1[20], new_sha1[20]; + char *ep; + char *cp = buf1; + int ch, old_mode, new_mode; - m = 0; - while ((ch = *cp) && '0' <= ch && ch <= '7') { - m = (m << 3) | (ch - '0'); + old_mode = new_mode = 0; + while ((ch = *cp) && ('0' <= ch && ch <= '7')) { + old_mode = (old_mode << 3) | (ch - '0'); + cp++; + } + if (*cp++ != ' ') + return -1; + while ((ch = *cp) && ('0' <= ch && ch <= '7')) { + new_mode = (new_mode << 3) | (ch - '0'); cp++; } - *mode = m; - if (strncmp(cp, "\tblob\t", 6) && strncmp(cp, " blob ", 6) && - strncmp(cp, "\ttree\t", 6) && strncmp(cp, " tree ", 6)) + if (*cp++ != ' ') return -1; - cp += 6; - if (get_sha1_hex(cp, sha1)) + if (get_sha1_hex(cp, old_sha1)) return -1; cp += 40; - if ((*cp != '\t') && *cp != ' ') + if (*cp++ != ' ') return -1; - strcpy(path, ++cp); - return 0; -} - -static int parse_diff_raw_output(const char *buf) -{ - char path[PATH_MAX]; - unsigned char old_sha1[20], new_sha1[20]; - const char *cp = buf; - int ch, old_mode, new_mode; - - switch (*cp++) { - case 'U': - diff_unmerge(cp + 1); - break; - case '+': - if (parse_oneside_change(cp, &new_mode, new_sha1, path)) - return -1; - diff_addremove('+', new_mode, new_sha1, path, NULL); - break; - case '-': - if (parse_oneside_change(cp, &old_mode, old_sha1, path)) - return -1; - diff_addremove('-', old_mode, old_sha1, path, NULL); - break; - case '*': - old_mode = new_mode = 0; - while ((ch = *cp) && ('0' <= ch && ch <= '7')) { - old_mode = (old_mode << 3) | (ch - '0'); - cp++; - } - if (strncmp(cp, "->", 2)) - return -1; - cp += 2; - while ((ch = *cp) && ('0' <= ch && ch <= '7')) { - new_mode = (new_mode << 3) | (ch - '0'); - cp++; - } - if (strncmp(cp, "\tblob\t", 6) && strncmp(cp, " blob ", 6) && - strncmp(cp, "\ttree\t", 6) && strncmp(cp, " tree ", 6)) - return -1; - cp += 6; - if (get_sha1_hex(cp, old_sha1)) - return -1; - cp += 40; - if (strncmp(cp, "->", 2)) - return -1; - cp += 2; - if (get_sha1_hex(cp, new_sha1)) - return -1; - cp += 40; - if ((*cp != '\t') && *cp != ' ') - return -1; - strcpy(path, ++cp); - diff_change(old_mode, new_mode, old_sha1, new_sha1, path, NULL); - break; - default: + if (get_sha1_hex(cp, new_sha1)) return -1; - } + cp += 40; + if (*cp++ != inter_name_termination) + return -1; + if (buf2) + cp = buf2; + ep = strchr(cp, inter_name_termination); + if (!ep) + return -1; + *ep++ = 0; + strcpy(old_path, cp); + diff_guif(old_mode, new_mode, old_sha1, new_sha1, + old_path, buf3 ? buf3 : ep); return 0; } @@ -97,19 +60,22 @@ static const char *diff_helper_usage = "git-diff-helper [-z] [-R] [-M] [-C] [-S<string>] paths..."; int main(int ac, const char **av) { - struct strbuf sb; - int reverse = 0; - int line_termination = '\n'; + struct strbuf sb1, sb2, sb3; + int reverse_diff = 0; - strbuf_init(&sb); + strbuf_init(&sb1); + strbuf_init(&sb2); + strbuf_init(&sb3); while (1 < ac && av[1][0] == '-') { if (av[1][1] == 'R') - reverse = 1; + reverse_diff = 1; else if (av[1][1] == 'z') - line_termination = 0; + line_termination = inter_name_termination = 0; else if (av[1][1] == 'p') /* hidden from the help */ - generate_patch = 0; + diff_output_style = DIFF_FORMAT_HUMAN; + else if (av[1][1] == 'P') /* hidden from the help */ + diff_output_style = DIFF_FORMAT_MACHINE; else if (av[1][1] == 'M') { detect_rename = 1; diff_score_opt = diff_scoreopt_parse(av[1]); @@ -127,19 +93,38 @@ int main(int ac, const char **av) { } /* the remaining parameters are paths patterns */ - diff_setup(reverse, (generate_patch ? -1 : line_termination)); + diff_setup(reverse_diff, diff_output_style); while (1) { int status; - read_line(&sb, stdin, line_termination); - if (sb.eof) + read_line(&sb1, stdin, line_termination); + if (sb1.eof) break; - status = parse_diff_raw_output(sb.buf); + switch (sb1.buf[0]) { + case 'U': + diff_unmerge(sb1.buf + 2); + continue; + case ':': + break; + default: + goto unrecognized; + } + if (!line_termination) { + read_line(&sb2, stdin, line_termination); + if (sb2.eof) + break; + read_line(&sb3, stdin, line_termination); + if (sb3.eof) + break; + status = parse_diff_raw(sb1.buf+1, sb2.buf, sb3.buf); + } + else + status = parse_diff_raw(sb1.buf+1, NULL, NULL); if (status) { + unrecognized: diff_flush(av+1, ac-1); - printf("%s%c", sb.buf, line_termination); + printf("%s%c", sb1.buf, line_termination); } } - if (detect_rename) diff_detect_rename(detect_rename, diff_score_opt); if (pickaxe) |