#include "strbuf.h"
#include "diff.h"
-static int matches_pathspec(const char *name, const char **spec, int cnt)
-{
- int i;
- int namelen = strlen(name);
- for (i = 0; i < cnt; i++) {
- int speclen = strlen(spec[i]);
- if (! strncmp(spec[i], name, speclen) &&
- speclen <= namelen &&
- (name[speclen] == 0 ||
- name[speclen] == '/'))
- return 1;
- }
- return 0;
-}
+static int detect_rename = 0;
+static int diff_score_opt = 0;
-static int parse_oneside_change(const char *cp, struct diff_spec *one,
- char *path)
+static int parse_oneside_change(const char *cp, int *mode,
+ unsigned char *sha1, char *path)
{
- int ch;
+ int ch, m;
- one->file_valid = one->sha1_valid = 1;
- one->mode = 0;
+ m = 0;
while ((ch = *cp) && '0' <= ch && ch <= '7') {
- one->mode = (one->mode << 3) | (ch - '0');
+ m = (m << 3) | (ch - '0');
cp++;
}
-
- if (strncmp(cp, "\tblob\t", 6))
+ *mode = m;
+ if (strncmp(cp, "\tblob\t", 6) && strncmp(cp, " blob ", 6))
return -1;
cp += 6;
- if (get_sha1_hex(cp, one->blob_sha1))
+ if (get_sha1_hex(cp, sha1))
return -1;
cp += 40;
- if (*cp++ != '\t')
+ if ((*cp != '\t') && *cp != ' ')
return -1;
- strcpy(path, cp);
+ strcpy(path, ++cp);
return 0;
}
-static int parse_diff_raw_output(const char *buf,
- const char **spec, int cnt, int reverse)
+static int parse_diff_raw_output(const char *buf)
{
- struct diff_spec old, new;
char path[PATH_MAX];
+ unsigned char old_sha1[20], new_sha1[20];
const char *cp = buf;
- int ch;
+ int ch, old_mode, new_mode;
switch (*cp++) {
case 'U':
- if (!cnt || matches_pathspec(cp + 1, spec, cnt))
- diff_unmerge(cp + 1);
- return 0;
+ diff_unmerge(cp + 1);
+ break;
case '+':
- old.file_valid = 0;
- parse_oneside_change(cp, &new, path);
+ parse_oneside_change(cp, &new_mode, new_sha1, path);
+ diff_addremove('+', new_mode, new_sha1, path, NULL);
break;
case '-':
- new.file_valid = 0;
- parse_oneside_change(cp, &old, path);
+ parse_oneside_change(cp, &old_mode, old_sha1, path);
+ diff_addremove('-', old_mode, old_sha1, path, NULL);
break;
case '*':
- old.file_valid = old.sha1_valid =
- new.file_valid = new.sha1_valid = 1;
- old.mode = new.mode = 0;
+ old_mode = new_mode = 0;
while ((ch = *cp) && ('0' <= ch && ch <= '7')) {
- old.mode = (old.mode << 3) | (ch - '0');
+ 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');
+ new_mode = (new_mode << 3) | (ch - '0');
cp++;
}
- if (strncmp(cp, "\tblob\t", 6))
+ if (strncmp(cp, "\tblob\t", 6) && strncmp(cp, " blob ", 6))
return -1;
cp += 6;
- if (get_sha1_hex(cp, old.blob_sha1))
+ 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.blob_sha1))
+ if (get_sha1_hex(cp, new_sha1))
return -1;
cp += 40;
- if (*cp++ != '\t')
+ if ((*cp != '\t') && *cp != ' ')
return -1;
- strcpy(path, cp);
+ strcpy(path, ++cp);
+ diff_change(old_mode, new_mode, old_sha1, new_sha1, path, 0);
break;
default:
return -1;
}
- if (!cnt || matches_pathspec(path, spec, cnt)) {
- if (reverse)
- run_external_diff(path, &new, &old);
- else
- run_external_diff(path, &old, &new);
- }
return 0;
}
static const char *diff_helper_usage =
-"git-diff-helper [-R] [-z] paths...";
+ "git-diff-helper [-z] [-R] [-M] paths...";
int main(int ac, const char **av) {
struct strbuf sb;
reverse = 1;
else if (av[1][1] == 'z')
line_termination = 0;
+ else if (av[1][1] == 'M') {
+ detect_rename = 1;
+ diff_score_opt = diff_scoreopt_parse(av[1]);
+ }
else
usage(diff_helper_usage);
ac--; av++;
}
/* the remaining parameters are paths patterns */
+ diff_setup(detect_rename, diff_score_opt, reverse, -1, av+1, ac-1);
+
while (1) {
int status;
read_line(&sb, stdin, line_termination);
if (sb.eof)
break;
- status = parse_diff_raw_output(sb.buf, av+1, ac-1, reverse);
- if (status)
- fprintf(stderr, "cannot parse %s\n", sb.buf);
+ status = parse_diff_raw_output(sb.buf);
+ if (status) {
+ diff_flush();
+ printf("%s%c", sb.buf, line_termination);
+ }
}
+
+ diff_flush();
return 0;
}