]>
git.ipfire.org Git - thirdparty/git.git/blob - diff-helper.c
2 * Copyright (C) 2005 Junio C Hamano
9 static int detect_rename
= 0;
10 static int diff_score_opt
= 0;
12 static int parse_oneside_change(const char *cp
, int *mode
,
13 unsigned char *sha1
, char *path
)
18 while ((ch
= *cp
) && '0' <= ch
&& ch
<= '7') {
19 m
= (m
<< 3) | (ch
- '0');
23 if (strncmp(cp
, "\tblob\t", 6) && strncmp(cp
, " blob ", 6))
26 if (get_sha1_hex(cp
, sha1
))
29 if ((*cp
!= '\t') && *cp
!= ' ')
35 static int parse_diff_raw_output(const char *buf
)
38 unsigned char old_sha1
[20], new_sha1
[20];
40 int ch
, old_mode
, new_mode
;
47 parse_oneside_change(cp
, &new_mode
, new_sha1
, path
);
48 diff_addremove('+', new_mode
, new_sha1
, path
, NULL
);
51 parse_oneside_change(cp
, &old_mode
, old_sha1
, path
);
52 diff_addremove('-', old_mode
, old_sha1
, path
, NULL
);
55 old_mode
= new_mode
= 0;
56 while ((ch
= *cp
) && ('0' <= ch
&& ch
<= '7')) {
57 old_mode
= (old_mode
<< 3) | (ch
- '0');
60 if (strncmp(cp
, "->", 2))
63 while ((ch
= *cp
) && ('0' <= ch
&& ch
<= '7')) {
64 new_mode
= (new_mode
<< 3) | (ch
- '0');
67 if (strncmp(cp
, "\tblob\t", 6) && strncmp(cp
, " blob ", 6))
70 if (get_sha1_hex(cp
, old_sha1
))
73 if (strncmp(cp
, "->", 2))
76 if (get_sha1_hex(cp
, new_sha1
))
79 if ((*cp
!= '\t') && *cp
!= ' ')
82 diff_change(old_mode
, new_mode
, old_sha1
, new_sha1
, path
, NULL
);
90 static const char *diff_helper_usage
=
91 "git-diff-helper [-z] [-R] [-M] paths...";
93 int main(int ac
, const char **av
) {
96 int line_termination
= '\n';
100 while (1 < ac
&& av
[1][0] == '-') {
103 else if (av
[1][1] == 'z')
104 line_termination
= 0;
105 else if (av
[1][1] == 'M') {
107 diff_score_opt
= diff_scoreopt_parse(av
[1]);
110 usage(diff_helper_usage
);
113 /* the remaining parameters are paths patterns */
115 diff_setup(detect_rename
, diff_score_opt
, reverse
, -1, av
+1, ac
-1);
119 read_line(&sb
, stdin
, line_termination
);
122 status
= parse_diff_raw_output(sb
.buf
);
125 printf("%s%c", sb
.buf
, line_termination
);