summaryrefslogtreecommitdiff
path: root/wt-status.c
blob: 0b060934e218f1d6fb95777ea7dd7faef1c2dd93 (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
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
#include "cache.h"
#include "wt-status.h"
#include "color.h"
#include "object.h"
#include "dir.h"
#include "commit.h"
#include "diff.h"
#include "revision.h"
#include "diffcore.h"

int wt_status_relative_paths = 1;
int wt_status_use_color = 0;
static char wt_status_colors[][COLOR_MAXLEN] = {
	"",         /* WT_STATUS_HEADER: normal */
	"\033[32m", /* WT_STATUS_UPDATED: green */
	"\033[31m", /* WT_STATUS_CHANGED: red */
	"\033[31m", /* WT_STATUS_UNTRACKED: red */
};

static const char use_add_msg[] =
"use \"git add <file>...\" to update what will be committed";
static const char use_add_rm_msg[] =
"use \"git add/rm <file>...\" to update what will be committed";
static const char use_add_to_include_msg[] =
"use \"git add <file>...\" to include in what will be committed";

static int parse_status_slot(const char *var, int offset)
{
	if (!strcasecmp(var+offset, "header"))
		return WT_STATUS_HEADER;
	if (!strcasecmp(var+offset, "updated")
		|| !strcasecmp(var+offset, "added"))
		return WT_STATUS_UPDATED;
	if (!strcasecmp(var+offset, "changed"))
		return WT_STATUS_CHANGED;
	if (!strcasecmp(var+offset, "untracked"))
		return WT_STATUS_UNTRACKED;
	die("bad config variable '%s'", var);
}

static const char* color(int slot)
{
	return wt_status_use_color ? wt_status_colors[slot] : "";
}

void wt_status_prepare(struct wt_status *s)
{
	unsigned char sha1[20];
	const char *head;

	memset(s, 0, sizeof(*s));
	head = resolve_ref("HEAD", sha1, 0, NULL);
	s->branch = head ? xstrdup(head) : NULL;
	s->reference = "HEAD";
	s->fp = stdout;
	s->index_file = get_index_file();
}

static void wt_status_print_cached_header(struct wt_status *s)
{
	const char *c = color(WT_STATUS_HEADER);
	color_fprintf_ln(s->fp, c, "# Changes to be committed:");
	if (!s->is_initial) {
		color_fprintf_ln(s->fp, c, "#   (use \"git reset %s <file>...\" to unstage)", s->reference);
	} else {
		color_fprintf_ln(s->fp, c, "#   (use \"git rm --cached <file>...\" to unstage)");
	}
	color_fprintf_ln(s->fp, c, "#");
}

static void wt_status_print_header(struct wt_status *s,
				   const char *main, const char *sub)
{
	const char *c = color(WT_STATUS_HEADER);
	color_fprintf_ln(s->fp, c, "# %s:", main);
	color_fprintf_ln(s->fp, c, "#   (%s)", sub);
	color_fprintf_ln(s->fp, c, "#");
}

static void wt_status_print_trailer(struct wt_status *s)
{
	color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
}

static char *quote_path(const char *in, int len,
			struct strbuf *out, const char *prefix)
{
	if (len < 0)
		len = strlen(in);

	strbuf_grow(out, len);
	strbuf_setlen(out, 0);
	if (prefix) {
		int off = 0;
		while (prefix[off] && off < len && prefix[off] == in[off])
			if (prefix[off] == '/') {
				prefix += off + 1;
				in += off + 1;
				len -= off + 1;
				off = 0;
			} else
				off++;

		for (; *prefix; prefix++)
			if (*prefix == '/')
				strbuf_addstr(out, "../");
	}

	for ( ; len > 0; in++, len--) {
		int ch = *in;

		switch (ch) {
		case '\n':
			strbuf_addstr(out, "\\n");
			break;
		case '\r':
			strbuf_addstr(out, "\\r");
			break;
		default:
			strbuf_addch(out, ch);
			continue;
		}
	}

	if (!out->len)
		strbuf_addstr(out, "./");

	return out->buf;
}

static void wt_status_print_filepair(struct wt_status *s,
				     int t, struct diff_filepair *p)
{
	const char *c = color(t);
	const char *one, *two;
	struct strbuf onebuf, twobuf;

	strbuf_init(&onebuf, 0);
	strbuf_init(&twobuf, 0);
	one = quote_path(p->one->path, -1, &onebuf, s->prefix);
	two = quote_path(p->two->path, -1, &twobuf, s->prefix);

	color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
	switch (p->status) {
	case DIFF_STATUS_ADDED:
		color_fprintf(s->fp, c, "new file:   %s", one);
		break;
	case DIFF_STATUS_COPIED:
		color_fprintf(s->fp, c, "copied:     %s -> %s", one, two);
		break;
	case DIFF_STATUS_DELETED:
		color_fprintf(s->fp, c, "deleted:    %s", one);
		break;
	case DIFF_STATUS_MODIFIED:
		color_fprintf(s->fp, c, "modified:   %s", one);
		break;
	case DIFF_STATUS_RENAMED:
		color_fprintf(s->fp, c, "renamed:    %s -> %s", one, two);
		break;
	case DIFF_STATUS_TYPE_CHANGED:
		color_fprintf(s->fp, c, "typechange: %s", one);
		break;
	case DIFF_STATUS_UNKNOWN:
		color_fprintf(s->fp, c, "unknown:    %s", one);
		break;
	case DIFF_STATUS_UNMERGED:
		color_fprintf(s->fp, c, "unmerged:   %s", one);
		break;
	default:
		die("bug: unhandled diff status %c", p->status);
	}
	fprintf(s->fp, "\n");
	strbuf_release(&onebuf);
	strbuf_release(&twobuf);
}

static void wt_status_print_updated_cb(struct diff_queue_struct *q,
		struct diff_options *options,
		void *data)
{
	struct wt_status *s = data;
	int shown_header = 0;
	int i;
	for (i = 0; i < q->nr; i++) {
		if (q->queue[i]->status == 'U')
			continue;
		if (!shown_header) {
			wt_status_print_cached_header(s);
			s->commitable = 1;
			shown_header = 1;
		}
		wt_status_print_filepair(s, WT_STATUS_UPDATED, q->queue[i]);
	}
	if (shown_header)
		wt_status_print_trailer(s);
}

static void wt_status_print_changed_cb(struct diff_queue_struct *q,
                        struct diff_options *options,
                        void *data)
{
	struct wt_status *s = data;
	int i;
	if (q->nr) {
		const char *msg = use_add_msg;
		s->workdir_dirty = 1;
		for (i = 0; i < q->nr; i++)
			if (q->queue[i]->status == DIFF_STATUS_DELETED) {
				msg = use_add_rm_msg;
				break;
			}
		wt_status_print_header(s, "Changed but not updated", msg);
	}
	for (i = 0; i < q->nr; i++)
		wt_status_print_filepair(s, WT_STATUS_CHANGED, q->queue[i]);
	if (q->nr)
		wt_status_print_trailer(s);
}

static void wt_status_print_initial(struct wt_status *s)
{
	int i;
	struct strbuf buf;

	strbuf_init(&buf, 0);
	if (active_nr) {
		s->commitable = 1;
		wt_status_print_cached_header(s);
	}
	for (i = 0; i < active_nr; i++) {
		color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
		color_fprintf_ln(s->fp, color(WT_STATUS_UPDATED), "new file: %s",
				quote_path(active_cache[i]->name, -1,
					   &buf, s->prefix));
	}
	if (active_nr)
		wt_status_print_trailer(s);
	strbuf_release(&buf);
}

static void wt_status_print_updated(struct wt_status *s)
{
	struct rev_info rev;
	init_revisions(&rev, NULL);
	setup_revisions(0, NULL, &rev, s->reference);
	rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
	rev.diffopt.format_callback = wt_status_print_updated_cb;
	rev.diffopt.format_callback_data = s;
	rev.diffopt.detect_rename = 1;
	rev.diffopt.rename_limit = 100;
	rev.diffopt.break_opt = 0;
	run_diff_index(&rev, 1);
}

static void wt_status_print_changed(struct wt_status *s)
{
	struct rev_info rev;
	init_revisions(&rev, "");
	setup_revisions(0, NULL, &rev, NULL);
	rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
	rev.diffopt.format_callback = wt_status_print_changed_cb;
	rev.diffopt.format_callback_data = s;
	run_diff_files(&rev, 0);
}

static void wt_status_print_untracked(struct wt_status *s)
{
	struct dir_struct dir;
	int i;
	int shown_header = 0;
	struct strbuf buf;

	strbuf_init(&buf, 0);
	memset(&dir, 0, sizeof(dir));

	if (!s->untracked) {
		dir.show_other_directories = 1;
		dir.hide_empty_directories = 1;
	}
	setup_standard_excludes(&dir);

	read_directory(&dir, ".", "", 0, NULL);
	for(i = 0; i < dir.nr; i++) {
		/* check for matching entry, which is unmerged; lifted from
		 * builtin-ls-files:show_other_files */
		struct dir_entry *ent = dir.entries[i];
		int pos = cache_name_pos(ent->name, ent->len);
		struct cache_entry *ce;
		if (0 <= pos)
			die("bug in wt_status_print_untracked");
		pos = -pos - 1;
		if (pos < active_nr) {
			ce = active_cache[pos];
			if (ce_namelen(ce) == ent->len &&
			    !memcmp(ce->name, ent->name, ent->len))
				continue;
		}
		if (!shown_header) {
			s->workdir_untracked = 1;
			wt_status_print_header(s, "Untracked files",
					       use_add_to_include_msg);
			shown_header = 1;
		}
		color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
		color_fprintf_ln(s->fp, color(WT_STATUS_UNTRACKED), "%s",
				quote_path(ent->name, ent->len,
					&buf, s->prefix));
	}
	strbuf_release(&buf);
}

static void wt_status_print_verbose(struct wt_status *s)
{
	struct rev_info rev;
	int saved_stdout;

	fflush(s->fp);

	/* Sigh, the entire diff machinery is hardcoded to output to
	 * stdout.  Do the dup-dance...*/
	saved_stdout = dup(STDOUT_FILENO);
	if (saved_stdout < 0 ||dup2(fileno(s->fp), STDOUT_FILENO) < 0)
		die("couldn't redirect stdout\n");

	init_revisions(&rev, NULL);
	setup_revisions(0, NULL, &rev, s->reference);
	rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
	rev.diffopt.detect_rename = 1;
	run_diff_index(&rev, 1);

	fflush(stdout);

	if (dup2(saved_stdout, STDOUT_FILENO) < 0)
		die("couldn't restore stdout\n");
	close(saved_stdout);
}

void wt_status_print(struct wt_status *s)
{
	unsigned char sha1[20];
	s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;

	if (s->branch) {
		const char *on_what = "On branch ";
		const char *branch_name = s->branch;
		if (!prefixcmp(branch_name, "refs/heads/"))
			branch_name += 11;
		else if (!strcmp(branch_name, "HEAD")) {
			branch_name = "";
			on_what = "Not currently on any branch.";
		}
		color_fprintf_ln(s->fp, color(WT_STATUS_HEADER),
			"# %s%s", on_what, branch_name);
	}

	if (s->is_initial) {
		color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
		color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "# Initial commit");
		color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
		wt_status_print_initial(s);
	}
	else {
		wt_status_print_updated(s);
	}

	wt_status_print_changed(s);
	wt_status_print_untracked(s);

	if (s->verbose && !s->is_initial)
		wt_status_print_verbose(s);
	if (!s->commitable) {
		if (s->amend)
			fprintf(s->fp, "# No changes\n");
		else if (s->nowarn)
			; /* nothing */
		else if (s->workdir_dirty)
			printf("no changes added to commit (use \"git add\" and/or \"git commit -a\")\n");
		else if (s->workdir_untracked)
			printf("nothing added to commit but untracked files present (use \"git add\" to track)\n");
		else if (s->is_initial)
			printf("nothing to commit (create/copy files and use \"git add\" to track)\n");
		else
			printf("nothing to commit (working directory clean)\n");
	}
}

int git_status_config(const char *k, const char *v)
{
	if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
		wt_status_use_color = git_config_colorbool(k, v, -1);
		return 0;
	}
	if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
		int slot = parse_status_slot(k, 13);
		if (!v)
			return config_error_nonbool(k);
		color_parse(v, k, wt_status_colors[slot]);
		return 0;
	}
	if (!strcmp(k, "status.relativepaths")) {
		wt_status_relative_paths = git_config_bool(k, v);
		return 0;
	}
	return git_default_config(k, v);
}