summaryrefslogtreecommitdiff
path: root/builtin-add.c
blob: b08e68831a3d3b5ff91e679b4e1862bf65f22bff (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
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
/*
 * "git add" builtin command
 *
 * Copyright (C) 2006 Linus Torvalds
 */
#include "cache.h"
#include "builtin.h"
#include "dir.h"
#include "exec_cmd.h"
#include "cache-tree.h"
#include "diff.h"
#include "diffcore.h"
#include "commit.h"
#include "revision.h"

static const char builtin_add_usage[] =
"git-add [-n] [-v] [-f] [--interactive | -i] [-u] [--refresh] [--] <filepattern>...";

static int take_worktree_changes;
static const char *excludes_file;

static void prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
{
	char *seen;
	int i, specs;
	struct dir_entry **src, **dst;

	for (specs = 0; pathspec[specs];  specs++)
		/* nothing */;
	seen = xcalloc(specs, 1);

	src = dst = dir->entries;
	i = dir->nr;
	while (--i >= 0) {
		struct dir_entry *entry = *src++;
		if (match_pathspec(pathspec, entry->name, entry->len,
				   prefix, seen))
			*dst++ = entry;
	}
	dir->nr = dst - dir->entries;

	for (i = 0; i < specs; i++) {
		if (!seen[i] && !file_exists(pathspec[i]))
			die("pathspec '%s' did not match any files",
					pathspec[i]);
	}
}

static void fill_directory(struct dir_struct *dir, const char **pathspec,
		int ignored_too)
{
	const char *path, *base;
	int baselen;

	/* Set up the default git porcelain excludes */
	memset(dir, 0, sizeof(*dir));
	if (!ignored_too) {
		dir->collect_ignored = 1;
		dir->exclude_per_dir = ".gitignore";
		path = git_path("info/exclude");
		if (!access(path, R_OK))
			add_excludes_from_file(dir, path);
		if (excludes_file != NULL && !access(excludes_file, R_OK))
			add_excludes_from_file(dir, excludes_file);
	}

	/*
	 * Calculate common prefix for the pathspec, and
	 * use that to optimize the directory walk
	 */
	baselen = common_prefix(pathspec);
	path = ".";
	base = "";
	if (baselen) {
		char *common = xmalloc(baselen + 1);
		memcpy(common, *pathspec, baselen);
		common[baselen] = 0;
		path = base = common;
	}

	/* Read the directory and prune it */
	read_directory(dir, path, base, baselen, pathspec);
	if (pathspec)
		prune_directory(dir, pathspec, baselen);
}

static void update_callback(struct diff_queue_struct *q,
			    struct diff_options *opt, void *cbdata)
{
	int i, verbose;

	verbose = *((int *)cbdata);
	for (i = 0; i < q->nr; i++) {
		struct diff_filepair *p = q->queue[i];
		const char *path = p->one->path;
		switch (p->status) {
		default:
			die("unexpacted diff status %c", p->status);
		case DIFF_STATUS_UNMERGED:
		case DIFF_STATUS_MODIFIED:
			add_file_to_cache(path, verbose);
			break;
		case DIFF_STATUS_DELETED:
			remove_file_from_cache(path);
			cache_tree_invalidate_path(active_cache_tree, path);
			if (verbose)
				printf("remove '%s'\n", path);
			break;
		}
	}
}

static void update(int verbose, const char *prefix, const char **files)
{
	struct rev_info rev;
	init_revisions(&rev, prefix);
	setup_revisions(0, NULL, &rev, NULL);
	rev.prune_data = get_pathspec(prefix, files);
	rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
	rev.diffopt.format_callback = update_callback;
	rev.diffopt.format_callback_data = &verbose;
	if (read_cache() < 0)
		die("index file corrupt");
	run_diff_files(&rev, 0);
}

static void refresh(int verbose, const char **pathspec)
{
	char *seen;
	int i, specs;

	for (specs = 0; pathspec[specs];  specs++)
		/* nothing */;
	seen = xcalloc(specs, 1);
	if (read_cache() < 0)
		die("index file corrupt");
	refresh_index(&the_index, verbose ? 0 : REFRESH_QUIET, pathspec, seen);
	for (i = 0; i < specs; i++) {
		if (!seen[i])
			die("pathspec '%s' did not match any files", pathspec[i]);
	}
}

static int git_add_config(const char *var, const char *value)
{
	if (!strcmp(var, "core.excludesfile")) {
		if (!value)
			die("core.excludesfile without value");
		excludes_file = xstrdup(value);
		return 0;
	}

	return git_default_config(var, value);
}

static struct lock_file lock_file;

static const char ignore_warning[] =
"The following paths are ignored by one of your .gitignore files:\n";

int cmd_add(int argc, const char **argv, const char *prefix)
{
	int i, newfd;
	int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
	const char **pathspec;
	struct dir_struct dir;
	int add_interactive = 0;

	for (i = 1; i < argc; i++) {
		if (!strcmp("--interactive", argv[i]) ||
		    !strcmp("-i", argv[i]))
			add_interactive++;
	}
	if (add_interactive) {
		const char *args[] = { "add--interactive", NULL };

		if (add_interactive != 1 || argc != 2)
			die("add --interactive does not take any parameters");
		execv_git_cmd(args);
		exit(1);
	}

	git_config(git_add_config);

	newfd = hold_locked_index(&lock_file, 1);

	for (i = 1; i < argc; i++) {
		const char *arg = argv[i];

		if (arg[0] != '-')
			break;
		if (!strcmp(arg, "--")) {
			i++;
			break;
		}
		if (!strcmp(arg, "-n")) {
			show_only = 1;
			continue;
		}
		if (!strcmp(arg, "-f")) {
			ignored_too = 1;
			continue;
		}
		if (!strcmp(arg, "-v")) {
			verbose = 1;
			continue;
		}
		if (!strcmp(arg, "-u")) {
			take_worktree_changes = 1;
			continue;
		}
		if (!strcmp(arg, "--refresh")) {
			refresh_only = 1;
			continue;
		}
		usage(builtin_add_usage);
	}

	if (take_worktree_changes) {
		update(verbose, prefix, argv + i);
		goto finish;
	}

	if (argc <= i) {
		fprintf(stderr, "Nothing specified, nothing added.\n");
		fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
		return 0;
	}
	pathspec = get_pathspec(prefix, argv + i);

	if (refresh_only) {
		refresh(verbose, pathspec);
		goto finish;
	}

	fill_directory(&dir, pathspec, ignored_too);

	if (show_only) {
		const char *sep = "", *eof = "";
		for (i = 0; i < dir.nr; i++) {
			printf("%s%s", sep, dir.entries[i]->name);
			sep = " ";
			eof = "\n";
		}
		fputs(eof, stdout);
		return 0;
	}

	if (read_cache() < 0)
		die("index file corrupt");

	if (dir.ignored_nr) {
		fprintf(stderr, ignore_warning);
		for (i = 0; i < dir.ignored_nr; i++) {
			fprintf(stderr, "%s\n", dir.ignored[i]->name);
		}
		fprintf(stderr, "Use -f if you really want to add them.\n");
		exit(1);
	}

	for (i = 0; i < dir.nr; i++)
		add_file_to_cache(dir.entries[i]->name, verbose);

 finish:
	if (active_cache_changed) {
		if (write_cache(newfd, active_cache, active_nr) ||
		    close(newfd) || commit_locked_index(&lock_file))
			die("Unable to write new index file");
	}

	return 0;
}