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/*
* Copyright (C) 2005 Junio C Hamano
*/
#include "cache.h"
#include "strbuf.h"
#include "diff.h"
static const char *pickaxe = NULL;
static int pickaxe_opts = 0;
static int line_termination = '\n';
static int inter_name_termination = '\t';
static const char *diff_helper_usage =
"git-diff-helper [-z] [-S<string>] paths...";
int main(int ac, const char **av) {
struct strbuf sb;
const char *garbage_flush_format;
strbuf_init(&sb);
while (1 < ac && av[1][0] == '-') {
if (av[1][1] == 'z')
line_termination = inter_name_termination = 0;
else if (av[1][1] == 'S') {
pickaxe = av[1] + 2;
}
else if (!strcmp(av[1], "--pickaxe-all"))
pickaxe_opts = DIFF_PICKAXE_ALL;
else
usage(diff_helper_usage);
ac--; av++;
}
garbage_flush_format = (line_termination == 0) ? "%s" : "%s\n";
/* the remaining parameters are paths patterns */
diff_setup(0);
while (1) {
unsigned old_mode, new_mode;
unsigned char old_sha1[20], new_sha1[20];
char old_path[PATH_MAX];
int status, score, two_paths;
char new_path[PATH_MAX];
int ch;
char *cp, *ep;
read_line(&sb, stdin, line_termination);
if (sb.eof)
break;
switch (sb.buf[0]) {
case ':':
/* parse the first part up to the status */
cp = sb.buf + 1;
old_mode = new_mode = 0;
while ((ch = *cp) && ('0' <= ch && ch <= '7')) {
old_mode = (old_mode << 3) | (ch - '0');
cp++;
}
if (*cp++ != ' ')
break;
while ((ch = *cp) && ('0' <= ch && ch <= '7')) {
new_mode = (new_mode << 3) | (ch - '0');
cp++;
}
if (*cp++ != ' ')
break;
if (get_sha1_hex(cp, old_sha1))
break;
cp += 40;
if (*cp++ != ' ')
break;
if (get_sha1_hex(cp, new_sha1))
break;
cp += 40;
if (*cp++ != ' ')
break;
status = *cp++;
if (!strchr("MCRNDU", status))
break;
two_paths = score = 0;
if (status == 'R' || status == 'C')
two_paths = 1;
/* pick up score if exists */
if (sscanf(cp, "%d", &score) != 1)
score = 0;
cp = strchr(cp,
inter_name_termination);
if (!cp)
break;
if (*cp++ != inter_name_termination)
break;
/* first pathname */
if (!line_termination) {
read_line(&sb, stdin, line_termination);
if (sb.eof)
break;
strcpy(old_path, sb.buf);
}
else if (!two_paths)
strcpy(old_path, cp);
else {
ep = strchr(cp, inter_name_termination);
if (!ep)
break;
strncpy(old_path, cp, ep-cp);
old_path[ep-cp] = 0;
cp = ep + 1;
}
/* second pathname */
if (!two_paths)
strcpy(new_path, old_path);
else {
if (!line_termination) {
read_line(&sb, stdin,
line_termination);
if (sb.eof)
break;
strcpy(new_path, sb.buf);
}
else
strcpy(new_path, cp);
}
diff_helper_input(old_mode, new_mode,
old_sha1, new_sha1,
old_path, status, score,
new_path);
continue;
}
if (1 < ac)
diffcore_pathspec(av + 1);
if (pickaxe)
diffcore_pickaxe(pickaxe, pickaxe_opts);
diff_flush(DIFF_FORMAT_PATCH, 0);
printf(garbage_flush_format, sb.buf);
}
if (1 < ac)
diffcore_pathspec(av + 1);
if (pickaxe)
diffcore_pickaxe(pickaxe, pickaxe_opts);
diff_flush(DIFF_FORMAT_PATCH, 0);
return 0;
}
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