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/*
* GIT - The information manager from hell
*
* Copyright (C) Linus Torvalds, 2005
*/
#include "cache.h"
#include "diff.h"
static const char diff_files_usage[] =
"git-diff-files [-q] "
"[<common diff options>] [<path>...]"
COMMON_DIFF_OPTIONS_HELP;
static struct diff_options diff_options;
static int silent = 0;
static void show_unmerge(const char *path)
{
diff_unmerge(&diff_options, path);
}
static void show_file(int pfx, struct cache_entry *ce)
{
diff_addremove(&diff_options, pfx, ntohl(ce->ce_mode),
ce->sha1, ce->name, NULL);
}
static void show_modified(int oldmode, int mode,
const unsigned char *old_sha1, const unsigned char *sha1,
char *path)
{
diff_change(&diff_options, oldmode, mode, old_sha1, sha1, path, NULL);
}
int main(int argc, const char **argv)
{
static const unsigned char null_sha1[20] = { 0, };
const char **pathspec;
const char *prefix = setup_git_directory();
int entries, i;
diff_setup(&diff_options);
while (1 < argc && argv[1][0] == '-') {
if (!strcmp(argv[1], "-q"))
silent = 1;
else if (!strcmp(argv[1], "-r"))
; /* no-op */
else if (!strcmp(argv[1], "-s"))
; /* no-op */
else {
int diff_opt_cnt;
diff_opt_cnt = diff_opt_parse(&diff_options,
argv+1, argc-1);
if (diff_opt_cnt < 0)
usage(diff_files_usage);
else if (diff_opt_cnt) {
argv += diff_opt_cnt;
argc -= diff_opt_cnt;
continue;
}
else
usage(diff_files_usage);
}
argv++; argc--;
}
/* Find the directory, and set up the pathspec */
pathspec = get_pathspec(prefix, argv + 1);
entries = read_cache();
if (diff_setup_done(&diff_options) < 0)
usage(diff_files_usage);
/* 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;
struct cache_entry *ce = active_cache[i];
int changed;
if (!ce_path_match(ce, pathspec))
continue;
if (ce_stage(ce)) {
show_unmerge(ce->name);
while (i < entries &&
!strcmp(ce->name, active_cache[i]->name))
i++;
i--; /* compensate for loop control increments */
continue;
}
if (lstat(ce->name, &st) < 0) {
if (errno != ENOENT && errno != ENOTDIR) {
perror(ce->name);
continue;
}
if (silent)
continue;
show_file('-', ce);
continue;
}
changed = ce_match_stat(ce, &st);
if (!changed && !diff_options.find_copies_harder)
continue;
oldmode = ntohl(ce->ce_mode);
show_modified(oldmode, DIFF_FILE_CANON_MODE(st.st_mode),
ce->sha1, (changed ? null_sha1 : ce->sha1),
ce->name);
}
diffcore_std(&diff_options);
diff_flush(&diff_options);
return 0;
}
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