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git/builtin/clean.c
Junio C Hamano a39b15b4f6 Merge branch 'as/check-ignore'
Add a new command "git check-ignore" for debugging .gitignore
files.

The variable names may want to get cleaned up but that can be done
in-tree.

* as/check-ignore:
  clean.c, ls-files.c: respect encapsulation of exclude_list_groups
  t0008: avoid brace expansion
  add git-check-ignore sub-command
  setup.c: document get_pathspec()
  add.c: extract new die_if_path_beyond_symlink() for reuse
  add.c: extract check_path_for_gitlink() from treat_gitlinks() for reuse
  pathspec.c: rename newly public functions for clarity
  add.c: move pathspec matchers into new pathspec.c for reuse
  add.c: remove unused argument from validate_pathspec()
  dir.c: improve docs for match_pathspec() and match_pathspec_depth()
  dir.c: provide clear_directory() for reclaiming dir_struct memory
  dir.c: keep track of where patterns came from
  dir.c: use a single struct exclude_list per source of excludes

Conflicts:
	builtin/ls-files.c
	dir.c
2013-01-23 21:19:10 -08:00

289 lines
7.5 KiB
C

/*
* "git clean" builtin command
*
* Copyright (C) 2007 Shawn Bohrer
*
* Based on git-clean.sh by Pavel Roskin
*/
#include "builtin.h"
#include "cache.h"
#include "dir.h"
#include "parse-options.h"
#include "refs.h"
#include "string-list.h"
#include "quote.h"
static int force = -1; /* unset */
static const char *const builtin_clean_usage[] = {
N_("git clean [-d] [-f] [-n] [-q] [-e <pattern>] [-x | -X] [--] <paths>..."),
NULL
};
static const char *msg_remove = N_("Removing %s\n");
static const char *msg_would_remove = N_("Would remove %s\n");
static const char *msg_skip_git_dir = N_("Skipping repository %s\n");
static const char *msg_would_skip_git_dir = N_("Would skip repository %s\n");
static const char *msg_warn_remove_failed = N_("failed to remove %s");
static int git_clean_config(const char *var, const char *value, void *cb)
{
if (!strcmp(var, "clean.requireforce"))
force = !git_config_bool(var, value);
return git_default_config(var, value, cb);
}
static int exclude_cb(const struct option *opt, const char *arg, int unset)
{
struct string_list *exclude_list = opt->value;
string_list_append(exclude_list, arg);
return 0;
}
static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
int dry_run, int quiet, int *dir_gone)
{
DIR *dir;
struct strbuf quoted = STRBUF_INIT;
struct dirent *e;
int res = 0, ret = 0, gone = 1, original_len = path->len, len, i;
unsigned char submodule_head[20];
struct string_list dels = STRING_LIST_INIT_DUP;
*dir_gone = 1;
if ((force_flag & REMOVE_DIR_KEEP_NESTED_GIT) &&
!resolve_gitlink_ref(path->buf, "HEAD", submodule_head)) {
if (!quiet) {
quote_path_relative(path->buf, strlen(path->buf), &quoted, prefix);
printf(dry_run ? _(msg_would_skip_git_dir) : _(msg_skip_git_dir),
quoted.buf);
}
*dir_gone = 0;
return 0;
}
dir = opendir(path->buf);
if (!dir) {
/* an empty dir could be removed even if it is unreadble */
res = dry_run ? 0 : rmdir(path->buf);
if (res) {
quote_path_relative(path->buf, strlen(path->buf), &quoted, prefix);
warning(_(msg_warn_remove_failed), quoted.buf);
*dir_gone = 0;
}
return res;
}
if (path->buf[original_len - 1] != '/')
strbuf_addch(path, '/');
len = path->len;
while ((e = readdir(dir)) != NULL) {
struct stat st;
if (is_dot_or_dotdot(e->d_name))
continue;
strbuf_setlen(path, len);
strbuf_addstr(path, e->d_name);
if (lstat(path->buf, &st))
; /* fall thru */
else if (S_ISDIR(st.st_mode)) {
if (remove_dirs(path, prefix, force_flag, dry_run, quiet, &gone))
ret = 1;
if (gone) {
quote_path_relative(path->buf, strlen(path->buf), &quoted, prefix);
string_list_append(&dels, quoted.buf);
} else
*dir_gone = 0;
continue;
} else {
res = dry_run ? 0 : unlink(path->buf);
if (!res) {
quote_path_relative(path->buf, strlen(path->buf), &quoted, prefix);
string_list_append(&dels, quoted.buf);
} else {
quote_path_relative(path->buf, strlen(path->buf), &quoted, prefix);
warning(_(msg_warn_remove_failed), quoted.buf);
*dir_gone = 0;
ret = 1;
}
continue;
}
/* path too long, stat fails, or non-directory still exists */
*dir_gone = 0;
ret = 1;
break;
}
closedir(dir);
strbuf_setlen(path, original_len);
if (*dir_gone) {
res = dry_run ? 0 : rmdir(path->buf);
if (!res)
*dir_gone = 1;
else {
quote_path_relative(path->buf, strlen(path->buf), &quoted, prefix);
warning(_(msg_warn_remove_failed), quoted.buf);
*dir_gone = 0;
ret = 1;
}
}
if (!*dir_gone && !quiet) {
for (i = 0; i < dels.nr; i++)
printf(dry_run ? _(msg_would_remove) : _(msg_remove), dels.items[i].string);
}
string_list_clear(&dels, 0);
return ret;
}
int cmd_clean(int argc, const char **argv, const char *prefix)
{
int i, res;
int dry_run = 0, remove_directories = 0, quiet = 0, ignored = 0;
int ignored_only = 0, config_set = 0, errors = 0, gone = 1;
int rm_flags = REMOVE_DIR_KEEP_NESTED_GIT;
struct strbuf directory = STRBUF_INIT;
struct dir_struct dir;
static const char **pathspec;
struct strbuf buf = STRBUF_INIT;
struct string_list exclude_list = STRING_LIST_INIT_NODUP;
struct exclude_list *el;
const char *qname;
char *seen = NULL;
struct option options[] = {
OPT__QUIET(&quiet, N_("do not print names of files removed")),
OPT__DRY_RUN(&dry_run, N_("dry run")),
OPT__FORCE(&force, N_("force")),
OPT_BOOLEAN('d', NULL, &remove_directories,
N_("remove whole directories")),
{ OPTION_CALLBACK, 'e', "exclude", &exclude_list, N_("pattern"),
N_("add <pattern> to ignore rules"), PARSE_OPT_NONEG, exclude_cb },
OPT_BOOLEAN('x', NULL, &ignored, N_("remove ignored files, too")),
OPT_BOOLEAN('X', NULL, &ignored_only,
N_("remove only ignored files")),
OPT_END()
};
git_config(git_clean_config, NULL);
if (force < 0)
force = 0;
else
config_set = 1;
argc = parse_options(argc, argv, prefix, options, builtin_clean_usage,
0);
memset(&dir, 0, sizeof(dir));
if (ignored_only)
dir.flags |= DIR_SHOW_IGNORED;
if (ignored && ignored_only)
die(_("-x and -X cannot be used together"));
if (!dry_run && !force) {
if (config_set)
die(_("clean.requireForce set to true and neither -n nor -f given; "
"refusing to clean"));
else
die(_("clean.requireForce defaults to true and neither -n nor -f given; "
"refusing to clean"));
}
if (force > 1)
rm_flags = 0;
dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
if (read_cache() < 0)
die(_("index file corrupt"));
if (!ignored)
setup_standard_excludes(&dir);
el = add_exclude_list(&dir, EXC_CMDL, "--exclude option");
for (i = 0; i < exclude_list.nr; i++)
add_exclude(exclude_list.items[i].string, "", 0, el, -(i+1));
pathspec = get_pathspec(prefix, argv);
fill_directory(&dir, pathspec);
if (pathspec)
seen = xmalloc(argc > 0 ? argc : 1);
for (i = 0; i < dir.nr; i++) {
struct dir_entry *ent = dir.entries[i];
int len, pos;
int matches = 0;
struct cache_entry *ce;
struct stat st;
/*
* Remove the '/' at the end that directory
* walking adds for directory entries.
*/
len = ent->len;
if (len && ent->name[len-1] == '/')
len--;
pos = cache_name_pos(ent->name, len);
if (0 <= pos)
continue; /* exact match */
pos = -pos - 1;
if (pos < active_nr) {
ce = active_cache[pos];
if (ce_namelen(ce) == len &&
!memcmp(ce->name, ent->name, len))
continue; /* Yup, this one exists unmerged */
}
/*
* we might have removed this as part of earlier
* recursive directory removal, so lstat() here could
* fail with ENOENT.
*/
if (lstat(ent->name, &st))
continue;
if (pathspec) {
memset(seen, 0, argc > 0 ? argc : 1);
matches = match_pathspec(pathspec, ent->name, len,
0, seen);
}
if (S_ISDIR(st.st_mode)) {
strbuf_addstr(&directory, ent->name);
if (remove_directories || (matches == MATCHED_EXACTLY)) {
if (remove_dirs(&directory, prefix, rm_flags, dry_run, quiet, &gone))
errors++;
if (gone && !quiet) {
qname = quote_path_relative(directory.buf, directory.len, &buf, prefix);
printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
}
}
strbuf_reset(&directory);
} else {
if (pathspec && !matches)
continue;
res = dry_run ? 0 : unlink(ent->name);
if (res) {
qname = quote_path_relative(ent->name, -1, &buf, prefix);
warning(_(msg_warn_remove_failed), qname);
errors++;
} else if (!quiet) {
qname = quote_path_relative(ent->name, -1, &buf, prefix);
printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
}
}
}
free(seen);
strbuf_release(&directory);
string_list_clear(&exclude_list, 0);
return (errors != 0);
}