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/*

* "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 "string-list.h"

#include "quote.h"

static int force = -1; /* unset */

static const char *const builtin_clean_usage[] = {

"git clean [-d] [-f] [-n] [-q] [-e <pattern>] [-x | -X] [--] <paths>...",

NULL

};

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;

}

int cmd_clean(int argc, const char **argv, const char *prefix)

{

int i;

int show_only = 0, remove_directories = 0, quiet = 0, ignored = 0;

int ignored_only = 0, baselen = 0, config_set = 0, errors = 0;

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;

const char *qname;

char *seen = NULL;

struct option options[] = {

OPT__QUIET(&quiet),

OPT__DRY_RUN(&show_only),

OPT_BOOLEAN('f', "force", &force, "force"),

OPT_BOOLEAN('d', NULL, &remove_directories,

"remove whole directories"),

{ OPTION_CALLBACK, 'e', "exclude", &exclude_list, "pattern",

"exclude <pattern>", PARSE_OPT_NONEG, exclude_cb },

OPT_BOOLEAN('x', NULL, &ignored, "remove ignored files, too"),

OPT_BOOLEAN('X', NULL, &ignored_only,

"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 (!show_only && !force)

die("clean.requireForce %s to true and neither -n nor -f given; "

"refusing to clean", config_set ? "set" : "defaults");

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);

for (i = 0; i < exclude_list.nr; i++)

add_exclude(exclude_list.items[i].string, "", 0, dir.exclude_list);

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,

baselen, seen);

}

if (S_ISDIR(st.st_mode)) {

strbuf_addstr(&directory, ent->name);

qname = quote_path_relative(directory.buf, directory.len, &buf, prefix);

if (show_only && (remove_directories ||

(matches == MATCHED_EXACTLY))) {

printf("Would remove %s\n", qname);

} else if (remove_directories ||

(matches == MATCHED_EXACTLY)) {

if (!quiet)

printf("Removing %s\n", qname);

if (remove_dir_recursively(&directory,

rm_flags) != 0) {

warning("failed to remove '%s'", qname);

errors++;

}

} else if (show_only) {

printf("Would not remove %s\n", qname);

} else {

printf("Not removing %s\n", qname);

}

strbuf_reset(&directory);

} else {

if (pathspec && !matches)

continue;

qname = quote_path_relative(ent->name, -1, &buf, prefix);

if (show_only) {

printf("Would remove %s\n", qname);

continue;

} else if (!quiet) {

printf("Removing %s\n", qname);

}

if (unlink(ent->name) != 0) {

warning("failed to remove '%s'", qname);

errors++;

}

}

}

free(seen);

strbuf_release(&directory);

string_list_clear(&exclude_list, 0);

return (errors != 0);

}