summaryrefslogtreecommitdiff
path: root/builtin-clean.c
blob: c5ad33d3e665f6d1613df2dfba235b03765565ac (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
/*
 * "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 "quote.h"

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

static const char *const builtin_clean_usage[] = {
	"git clean [-d] [-f] [-n] [-q] [-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);
}

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;
	struct strbuf directory = STRBUF_INIT;
	struct dir_struct dir;
	const char *path, *base;
	static const char **pathspec;
	struct strbuf buf = STRBUF_INIT;
	const char *qname;
	char *seen = NULL;
	struct option options[] = {
		OPT__QUIET(&quiet),
		OPT__DRY_RUN(&show_only),
		OPT_BOOLEAN('f', NULL, &force, "force"),
		OPT_BOOLEAN('d', NULL, &remove_directories,
				"remove whole directories"),
		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, 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 set and -n or -f not given; "
		    "refusing to clean", config_set ? "" : " not");

	dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;

	if (!ignored)
		setup_standard_excludes(&dir);

	pathspec = get_pathspec(prefix, argv);
	read_cache();

	/*
	 * Calculate common prefix for the pathspec, and
	 * use that to optimize the directory walk
	 */
	baselen = common_prefix(pathspec);
	path = ".";
	base = "";
	if (baselen)
		path = base = xmemdupz(*pathspec, baselen);
	read_directory(&dir, path, base, baselen, 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, 0) != 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);
	return (errors != 0);
}