2 * Copyright (C) 2005 Junio C Hamano
9 static int detect_rename
= 0;
10 static int diff_score_opt
= 0;
11 static int generate_patch
= 1;
13 static int parse_oneside_change(const char *cp
, int *mode
,
14 unsigned char *sha1
, char *path
)
19 while ((ch
= *cp
) && '0' <= ch
&& ch
<= '7') {
20 m
= (m
<< 3) | (ch
- '0');
24 if (strncmp(cp
, "\tblob\t", 6) && strncmp(cp
, " blob ", 6) &&
25 strncmp(cp
, "\ttree\t", 6) && strncmp(cp
, " tree ", 6))
28 if (get_sha1_hex(cp
, sha1
))
31 if ((*cp
!= '\t') && *cp
!= ' ')
37 static int parse_diff_raw_output(const char *buf
)
40 unsigned char old_sha1
[20], new_sha1
[20];
42 int ch
, old_mode
, new_mode
;
49 if (parse_oneside_change(cp
, &new_mode
, new_sha1
, path
))
51 diff_addremove('+', new_mode
, new_sha1
, path
, NULL
);
54 if (parse_oneside_change(cp
, &old_mode
, old_sha1
, path
))
56 diff_addremove('-', old_mode
, old_sha1
, path
, NULL
);
59 old_mode
= new_mode
= 0;
60 while ((ch
= *cp
) && ('0' <= ch
&& ch
<= '7')) {
61 old_mode
= (old_mode
<< 3) | (ch
- '0');
64 if (strncmp(cp
, "->", 2))
67 while ((ch
= *cp
) && ('0' <= ch
&& ch
<= '7')) {
68 new_mode
= (new_mode
<< 3) | (ch
- '0');
71 if (strncmp(cp
, "\tblob\t", 6) && strncmp(cp
, " blob ", 6) &&
72 strncmp(cp
, "\ttree\t", 6) && strncmp(cp
, " tree ", 6))
75 if (get_sha1_hex(cp
, old_sha1
))
78 if (strncmp(cp
, "->", 2))
81 if (get_sha1_hex(cp
, new_sha1
))
84 if ((*cp
!= '\t') && *cp
!= ' ')
87 diff_change(old_mode
, new_mode
, old_sha1
, new_sha1
, path
, NULL
);
95 static const char *diff_helper_usage
=
96 "git-diff-helper [-z] [-R] [-M] [-C] paths...";
98 int main(int ac
, const char **av
) {
101 int line_termination
= '\n';
105 while (1 < ac
&& av
[1][0] == '-') {
108 else if (av
[1][1] == 'z')
109 line_termination
= 0;
110 else if (av
[1][1] == 'p') /* hidden from the help */
112 else if (av
[1][1] == 'M') {
114 diff_score_opt
= diff_scoreopt_parse(av
[1]);
116 else if (av
[1][1] == 'C') {
118 diff_score_opt
= diff_scoreopt_parse(av
[1]);
121 usage(diff_helper_usage
);
124 /* the remaining parameters are paths patterns */
126 diff_setup(detect_rename
, diff_score_opt
, reverse
,
127 (generate_patch
? -1 : line_termination
),
132 read_line(&sb
, stdin
, line_termination
);
135 status
= parse_diff_raw_output(sb
.buf
);
138 printf("%s%c", sb
.buf
, line_termination
);