2 * Copyright (C) 2005 Junio C Hamano
8 static int matches_pathspec(const char *name, const char **spec, int cnt)
11 int namelen = strlen(name);
12 for (i = 0; i < cnt; i++) {
13 int speclen = strlen(spec[i]);
14 if (! strncmp(spec[i], name, speclen) &&
16 (name[speclen] == 0 ||
17 name[speclen] == '/'))
23 static int parse_oneside_change(const char *cp, struct diff_spec *one,
28 one->file_valid = one->sha1_valid = 1;
30 while ((ch = *cp) && '0' <= ch && ch <= '7') {
31 one->mode = (one->mode << 3) | (ch - '0');
35 if (strncmp(cp, "\tblob\t", 6))
38 if (get_sha1_hex(cp, one->u.sha1))
47 static int parse_diff_tree_output(const char *buf, const char **spec, int cnt)
49 struct diff_spec old, new;
56 if (!cnt || matches_pathspec(cp + 1, spec, cnt))
61 parse_oneside_change(cp, &new, path);
65 parse_oneside_change(cp, &old, path);
68 old.file_valid = old.sha1_valid =
69 new.file_valid = new.sha1_valid = 1;
70 old.mode = new.mode = 0;
71 while ((ch = *cp) && ('0' <= ch && ch <= '7')) {
72 old.mode = (old.mode << 3) | (ch - '0');
75 if (strncmp(cp, "->", 2))
78 while ((ch = *cp) && ('0' <= ch && ch <= '7')) {
79 new.mode = (new.mode << 3) | (ch - '0');
82 if (strncmp(cp, "\tblob\t", 6))
85 if (get_sha1_hex(cp, old.u.sha1))
88 if (strncmp(cp, "->", 2))
91 if (get_sha1_hex(cp, new.u.sha1))
101 if (!cnt || matches_pathspec(path, spec, cnt))
102 run_external_diff(path, &old, &new);
106 static const char *diff_tree_helper_usage =
107 "diff-tree-helper [-R] [-z] paths...";
109 int main(int ac, const char **av) {
111 int reverse_diff = 0;
112 int line_termination = '\n';
116 while (1 < ac && av[1][0] == '-') {
119 else if (av[1][1] == 'z')
120 line_termination = 0;
122 usage(diff_tree_helper_usage);
125 /* the remaining parameters are paths patterns */
129 read_line(&sb, stdin, line_termination);
132 status = parse_diff_tree_output(sb.buf, av+1, ac-1);
134 fprintf(stderr, "cannot parse %s\n", sb.buf);