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/*
* GIT - The information manager from hell
*
* Copyright (C) Linus Torvalds, 2005
*/
#include "cache.h"
static const char *show_diff_usage = "show-diff [-q] [-s] [-z] [paths...]";
static int recursive = 0;
static int line_termination = '\n';
static int silent = 0;
static int silent_on_nonexisting_files = 0;
static int matches_pathspec(struct cache_entry *ce, char **spec, int cnt)
{
int i;
int namelen = ce_namelen(ce);
for (i = 0; i < cnt; i++) {
int speclen = strlen(spec[i]);
if (! strncmp(spec[i], ce->name, speclen) &&
speclen <= namelen &&
(ce->name[speclen] == 0 ||
ce->name[speclen] == '/'))
return 1;
}
return 0;
}
static void show_file(const char *prefix, struct cache_entry *ce)
{
printf("%s%o\t%s\t%s\t%s%c", prefix, ntohl(ce->ce_mode), "blob",
sha1_to_hex(ce->sha1), ce->name, line_termination);
}
int main(int argc, char **argv)
{
static const char null_sha1_hex[] = "0000000000000000000000000000000000000000";
int entries = read_cache();
int i;
while (1 < argc && argv[1][0] == '-') {
if (!strcmp(argv[1], "-s"))
silent_on_nonexisting_files = silent = 1;
else if (!strcmp(argv[1], "-q"))
silent_on_nonexisting_files = 1;
else if (!strcmp(argv[1], "-z"))
line_termination = 0;
else if (!strcmp(argv[1], "-r"))
recursive = 1; /* No-op */
else
usage(show_diff_usage);
argv++; argc--;
}
/* At this point, if argc == 1, then we are doing everything.
* Otherwise argv[1] .. argv[argc-1] have the explicit paths.
*/
if (entries < 0) {
perror("read_cache");
exit(1);
}
for (i = 0; i < entries; i++) {
struct stat st;
unsigned int oldmode, mode;
struct cache_entry *ce = active_cache[i];
int changed;
if (1 < argc &&
! matches_pathspec(ce, argv+1, argc-1))
continue;
if (ce_stage(ce)) {
show_file("U", ce);
while (i < entries &&
!strcmp(ce->name, active_cache[i]->name))
i++;
i--; /* compensate for loop control increments */
continue;
}
if (stat(ce->name, &st) < 0) {
if (errno != ENOENT) {
perror(ce->name);
continue;
}
if (silent_on_nonexisting_files)
continue;
show_file("-", ce);
continue;
}
changed = cache_match_stat(ce, &st);
if (!changed)
continue;
oldmode = ntohl(ce->ce_mode);
mode = S_IFREG | ce_permissions(st.st_mode);
printf("*%o->%o\t%s\t%s->%s\t%s%c",
oldmode, mode, "blob",
sha1_to_hex(ce->sha1), null_sha1_hex,
ce->name, line_termination);
}
return 0;
}
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