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git/ls-files.c

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/*
* This merges the file listing in the directory cache index
* with the actual working directory list, and shows different
* combinations of the two.
*
* Copyright (C) Linus Torvalds, 2005
*/
#include <dirent.h>
#include <fnmatch.h>
#include "cache.h"
static int show_deleted = 0;
static int show_cached = 0;
static int show_others = 0;
static int show_ignored = 0;
static int show_stage = 0;
static int show_unmerged = 0;
static int show_killed = 0;
static int line_terminator = '\n';
static const char *tag_cached = "";
static const char *tag_unmerged = "";
static const char *tag_removed = "";
static const char *tag_other = "";
static const char *tag_killed = "";
static int nr_excludes;
static const char **excludes;
static int excludes_alloc;
static void add_exclude(const char *string)
{
if (nr_excludes == excludes_alloc) {
excludes_alloc = alloc_nr(excludes_alloc);
excludes = realloc(excludes, excludes_alloc*sizeof(char *));
}
excludes[nr_excludes++] = string;
}
static void add_excludes_from_file(const char *fname)
{
int fd, i;
long size;
char *buf, *entry;
fd = open(fname, O_RDONLY);
if (fd < 0)
goto err;
size = lseek(fd, 0, SEEK_END);
if (size < 0)
goto err;
lseek(fd, 0, SEEK_SET);
if (size == 0) {
close(fd);
return;
}
buf = xmalloc(size);
if (read(fd, buf, size) != size)
goto err;
close(fd);
entry = buf;
for (i = 0; i < size; i++) {
if (buf[i] == '\n') {
if (entry != buf + i) {
buf[i] = 0;
add_exclude(entry);
}
entry = buf + i + 1;
}
}
return;
err: perror(fname);
exit(1);
}
static int excluded(const char *pathname)
{
int i;
if (nr_excludes) {
const char *basename = strrchr(pathname, '/');
basename = (basename) ? basename+1 : pathname;
for (i = 0; i < nr_excludes; i++)
if (fnmatch(excludes[i], basename, 0) == 0)
return 1;
}
return 0;
}
struct nond_on_fs {
int len;
char name[0];
};
static struct nond_on_fs **dir;
static int nr_dir;
static int dir_alloc;
static void add_name(const char *pathname, int len)
{
struct nond_on_fs *ent;
if (cache_name_pos(pathname, len) >= 0)
return;
if (nr_dir == dir_alloc) {
dir_alloc = alloc_nr(dir_alloc);
dir = xrealloc(dir, dir_alloc*sizeof(ent));
}
ent = xmalloc(sizeof(*ent) + len + 1);
ent->len = len;
memcpy(ent->name, pathname, len);
dir[nr_dir++] = ent;
}
/*
* Read a directory tree. We currently ignore anything but
* directories, regular files and symlinks. That's because git
* doesn't handle them at all yet. Maybe that will change some
* day.
*
* Also, we currently ignore all names starting with a dot.
* That likely will not change.
*/
static void read_directory(const char *path, const char *base, int baselen)
{
DIR *dir = opendir(path);
if (dir) {
struct dirent *de;
char fullname[MAXPATHLEN + 1];
memcpy(fullname, base, baselen);
while ((de = readdir(dir)) != NULL) {
int len;
if (de->d_name[0] == '.')
continue;
if (excluded(de->d_name) != show_ignored)
continue;
len = strlen(de->d_name);
memcpy(fullname + baselen, de->d_name, len+1);
switch (DTYPE(de)) {
struct stat st;
default:
continue;
case DT_UNKNOWN:
if (lstat(fullname, &st))
continue;
if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
break;
if (!S_ISDIR(st.st_mode))
continue;
/* fallthrough */
case DT_DIR:
memcpy(fullname + baselen + len, "/", 2);
read_directory(fullname, fullname,
baselen + len + 1);
continue;
case DT_REG:
case DT_LNK:
break;
}
add_name(fullname, baselen + len);
}
closedir(dir);
}
}
static int cmp_name(const void *p1, const void *p2)
{
const struct nond_on_fs *e1 = *(const struct nond_on_fs **)p1;
const struct nond_on_fs *e2 = *(const struct nond_on_fs **)p2;
return cache_name_compare(e1->name, e1->len,
e2->name, e2->len);
}
static void show_killed_files()
{
int i;
for (i = 0; i < nr_dir; i++) {
struct nond_on_fs *ent = dir[i];
char *cp, *sp;
int pos, len, killed = 0;
for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
sp = strchr(cp, '/');
if (!sp) {
/* If ent->name is prefix of an entry in the
* cache, it will be killed.
*/
pos = cache_name_pos(ent->name, ent->len);
if (0 <= pos)
die("bug in show-killed-files");
pos = -pos - 1;
while (pos < active_nr &&
ce_stage(active_cache[pos]))
pos++; /* skip unmerged */
if (active_nr <= pos)
break;
/* pos points at a name immediately after
* ent->name in the cache. Does it expect
* ent->name to be a directory?
*/
len = ce_namelen(active_cache[pos]);
if ((ent->len < len) &&
!strncmp(active_cache[pos]->name,
ent->name, ent->len) &&
active_cache[pos]->name[ent->len] == '/')
killed = 1;
break;
}
if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
/* If any of the leading directories in
* ent->name is registered in the cache,
* ent->name will be killed.
*/
killed = 1;
break;
}
}
if (killed)
printf("%s%.*s%c", tag_killed,
dir[i]->len, dir[i]->name,
line_terminator);
}
}
static void show_files(void)
{
int i;
/* For cached/deleted files we don't need to even do the readdir */
if (show_others || show_killed) {
read_directory(".", "", 0);
qsort(dir, nr_dir, sizeof(struct nond_on_fs *), cmp_name);
if (show_others)
for (i = 0; i < nr_dir; i++)
printf("%s%.*s%c", tag_other,
dir[i]->len, dir[i]->name,
line_terminator);
if (show_killed)
show_killed_files();
}
if (show_cached | show_stage) {
for (i = 0; i < active_nr; i++) {
struct cache_entry *ce = active_cache[i];
if (excluded(ce->name) != show_ignored)
continue;
if (show_unmerged && !ce_stage(ce))
continue;
if (!show_stage)
printf("%s%s%c",
ce_stage(ce) ? tag_unmerged :
tag_cached,
ce->name, line_terminator);
else
printf("%s%06o %s %d %s%c",
ce_stage(ce) ? tag_unmerged :
tag_cached,
ntohl(ce->ce_mode),
sha1_to_hex(ce->sha1),
ce_stage(ce),
ce->name, line_terminator);
}
}
if (show_deleted) {
for (i = 0; i < active_nr; i++) {
struct cache_entry *ce = active_cache[i];
struct stat st;
if (excluded(ce->name) != show_ignored)
continue;
if (!lstat(ce->name, &st))
continue;
printf("%s%s%c", tag_removed, ce->name,
line_terminator);
}
}
}
static const char *ls_files_usage =
"ls-files [-z] [-t] (--[cached|deleted|others|stage|unmerged|killed])* "
"[ --ignored [--exclude=<pattern>] [--exclude-from=<file>) ]";
int main(int argc, char **argv)
{
int i;
for (i = 1; i < argc; i++) {
char *arg = argv[i];
if (!strcmp(arg, "-z")) {
line_terminator = 0;
} else if (!strcmp(arg, "-t")) {
tag_cached = "H ";
tag_unmerged = "M ";
tag_removed = "R ";
tag_other = "? ";
tag_killed = "K ";
} else if (!strcmp(arg, "-c") || !strcmp(arg, "--cached")) {
show_cached = 1;
} else if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) {
show_deleted = 1;
} else if (!strcmp(arg, "-o") || !strcmp(arg, "--others")) {
show_others = 1;
} else if (!strcmp(arg, "-i") || !strcmp(arg, "--ignored")) {
show_ignored = 1;
} else if (!strcmp(arg, "-s") || !strcmp(arg, "--stage")) {
show_stage = 1;
} else if (!strcmp(arg, "-k") || !strcmp(arg, "--killed")) {
show_killed = 1;
} else if (!strcmp(arg, "-u") || !strcmp(arg, "--unmerged")) {
/* There's no point in showing unmerged unless
* you also show the stage information.
*/
show_stage = 1;
show_unmerged = 1;
} else if (!strcmp(arg, "-x") && i+1 < argc) {
add_exclude(argv[++i]);
} else if (!strncmp(arg, "--exclude=", 10)) {
add_exclude(arg+10);
} else if (!strcmp(arg, "-X") && i+1 < argc) {
add_excludes_from_file(argv[++i]);
} else if (!strncmp(arg, "--exclude-from=", 15)) {
add_excludes_from_file(arg+15);
} else
usage(ls_files_usage);
}
if (show_ignored && !nr_excludes) {
fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
argv[0]);
exit(1);
}
/* With no flags, we default to showing the cached files */
if (!(show_stage | show_deleted | show_others | show_unmerged | show_killed))
show_cached = 1;
read_cache();
show_files();
return 0;
}