[PATCH] Add --pickaxe-all to diff-* brothers.
[git/git.git] / diff-helper.c
1 /*
2 * Copyright (C) 2005 Junio C Hamano
3 */
4 #include "cache.h"
5 #include "strbuf.h"
6 #include "diff.h"
7
8 static const char *pickaxe = NULL;
9 static int pickaxe_opts = 0;
10 static int line_termination = '\n';
11 static int inter_name_termination = '\t';
12
13 static const char *diff_helper_usage =
14 "git-diff-helper [-z] [-S<string>] paths...";
15
16 int main(int ac, const char **av) {
17 struct strbuf sb;
18
19 strbuf_init(&sb);
20
21 while (1 < ac && av[1][0] == '-') {
22 if (av[1][1] == 'z')
23 line_termination = inter_name_termination = 0;
24 else if (av[1][1] == 'S') {
25 pickaxe = av[1] + 2;
26 }
27 else if (!strcmp(av[1], "--pickaxe-all"))
28 pickaxe_opts = DIFF_PICKAXE_ALL;
29 else
30 usage(diff_helper_usage);
31 ac--; av++;
32 }
33 /* the remaining parameters are paths patterns */
34
35 diff_setup(0);
36 while (1) {
37 unsigned old_mode, new_mode;
38 unsigned char old_sha1[20], new_sha1[20];
39 char old_path[PATH_MAX];
40 int status, score, two_paths;
41 char new_path[PATH_MAX];
42
43 int ch;
44 char *cp, *ep;
45
46 read_line(&sb, stdin, line_termination);
47 if (sb.eof)
48 break;
49 switch (sb.buf[0]) {
50 case ':':
51 /* parse the first part up to the status */
52 cp = sb.buf + 1;
53 old_mode = new_mode = 0;
54 while ((ch = *cp) && ('0' <= ch && ch <= '7')) {
55 old_mode = (old_mode << 3) | (ch - '0');
56 cp++;
57 }
58 if (*cp++ != ' ')
59 break;
60 while ((ch = *cp) && ('0' <= ch && ch <= '7')) {
61 new_mode = (new_mode << 3) | (ch - '0');
62 cp++;
63 }
64 if (*cp++ != ' ')
65 break;
66 if (get_sha1_hex(cp, old_sha1))
67 break;
68 cp += 40;
69 if (*cp++ != ' ')
70 break;
71 if (get_sha1_hex(cp, new_sha1))
72 break;
73 cp += 40;
74 if (*cp++ != ' ')
75 break;
76 status = *cp++;
77 if (!strchr("MCRNDU", status))
78 break;
79 two_paths = score = 0;
80 if (status == 'R' || status == 'C') {
81 two_paths = 1;
82 sscanf(cp, "%d", &score);
83 if (line_termination) {
84 cp = strchr(cp,
85 inter_name_termination);
86 if (!cp)
87 break;
88 }
89 }
90
91 if (*cp++ != inter_name_termination)
92 break;
93
94 /* first pathname */
95 if (!line_termination) {
96 read_line(&sb, stdin, line_termination);
97 if (sb.eof)
98 break;
99 strcpy(old_path, sb.buf);
100 }
101 else if (!two_paths)
102 strcpy(old_path, cp);
103 else {
104 ep = strchr(cp, inter_name_termination);
105 if (!ep)
106 break;
107 strncpy(old_path, cp, ep-cp);
108 old_path[ep-cp] = 0;
109 cp = ep + 1;
110 }
111
112 /* second pathname */
113 if (!two_paths)
114 strcpy(new_path, old_path);
115 else {
116 if (!line_termination) {
117 read_line(&sb, stdin,
118 line_termination);
119 if (sb.eof)
120 break;
121 strcpy(new_path, sb.buf);
122 }
123 else
124 strcpy(new_path, cp);
125 }
126 diff_helper_input(old_mode, new_mode,
127 old_sha1, new_sha1,
128 old_path, status, score,
129 new_path);
130 continue;
131 }
132 if (pickaxe)
133 diffcore_pickaxe(pickaxe, pickaxe_opts);
134 if (1 < ac)
135 diffcore_pathspec(av + 1);
136 diff_flush(DIFF_FORMAT_PATCH, 0);
137 printf("%s\n", sb.buf);
138 }
139 if (pickaxe)
140 diffcore_pickaxe(pickaxe, pickaxe_opts);
141 if (1 < ac)
142 diffcore_pathspec(av + 1);
143 diff_flush(DIFF_FORMAT_PATCH, 0);
144 return 0;
145 }