git@vger.kernel.org list mirror (unofficial, one of many)
 help / color / mirror / Atom feed
640c545f55f0a20ee452b7fe5b1ec9118cf4944d blob 13187 bytes (raw)

  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
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
 
#include "builtin.h"
#include "config.h"
#include "parse-options.h"
#include "refs.h"
#include "lockfile.h"
#include "cache-tree.h"
#include "unpack-trees.h"
#include "merge-recursive.h"
#include "argv-array.h"
#include "run-command.h"
#include "dir.h"

static const char * const git_stash_helper_usage[] = {
	N_("git stash--helper drop [-q|--quiet] [<stash>]"),
	N_("git stash--helper apply [--index] [-q|--quiet] [<stash>]"),
	N_("git stash--helper clear"),
	NULL
};

static const char * const git_stash_helper_drop_usage[] = {
	N_("git stash--helper drop [-q|--quiet] [<stash>]"),
	NULL
};

static const char * const git_stash_helper_apply_usage[] = {
	N_("git stash--helper apply [--index] [-q|--quiet] [<stash>]"),
	NULL
};

static const char * const git_stash_helper_clear_usage[] = {
	N_("git stash--helper clear"),
	NULL
};

static const char *ref_stash = "refs/stash";
static int quiet;
static char stash_index_path[PATH_MAX];

struct stash_info {
	struct object_id w_commit;
	struct object_id b_commit;
	struct object_id i_commit;
	struct object_id u_commit;
	struct object_id w_tree;
	struct object_id b_tree;
	struct object_id i_tree;
	struct object_id u_tree;
	struct strbuf revision;
	int is_stash_ref;
	int has_u;
};

static int get_symbolic_name(const char *symbolic, struct strbuf *out)
{
	struct child_process cp = CHILD_PROCESS_INIT;

	cp.git_cmd = 1;
	argv_array_pushl(&cp.args, "rev-parse", "--symbolic-full-name", NULL);
	argv_array_push(&cp.args, symbolic);
	return pipe_command(&cp, NULL, 0, out, 0, NULL, 0);
}

static int have_stash(void)
{
	struct child_process cp = CHILD_PROCESS_INIT;

	cp.git_cmd = 1;
	cp.no_stdout = 1;
	argv_array_pushl(&cp.args, "rev-parse", "--verify", "--quiet", NULL);
	argv_array_push(&cp.args, ref_stash);
	return pipe_command(&cp, NULL, 0, NULL, 0, NULL, 0);
}

static void free_stash_info(struct stash_info *info)
{
	strbuf_release(&info->revision);
}

static int get_stash_info(struct stash_info *info, int argc, const char **argv)
{
	struct strbuf w_commit_rev = STRBUF_INIT;
	struct strbuf b_commit_rev = STRBUF_INIT;
	struct strbuf w_tree_rev = STRBUF_INIT;
	struct strbuf b_tree_rev = STRBUF_INIT;
	struct strbuf i_tree_rev = STRBUF_INIT;
	struct strbuf u_tree_rev = STRBUF_INIT;
	struct strbuf symbolic = STRBUF_INIT;
	struct strbuf out = STRBUF_INIT;
	int ret;
	const char *revision;
	const char *commit = NULL;
	char *end_of_rev;
	info->is_stash_ref = 0;

	if (argc > 1) {
		int i;
		struct strbuf refs_msg = STRBUF_INIT;
		for (i = 0; i < argc; ++i)
			strbuf_addf(&refs_msg, " '%s'", argv[i]);

		fprintf_ln(stderr, _("Too many revisions specified:%s"), refs_msg.buf);
		strbuf_release(&refs_msg);

		return -1;
	}

	if (argc == 1)
		commit = argv[0];

	strbuf_init(&info->revision, 0);
	if (commit == NULL) {
		if (have_stash()) {
			free_stash_info(info);
			return error(_("No stash entries found."));
		}

		strbuf_addf(&info->revision, "%s@{0}", ref_stash);
	} else if (strspn(commit, "0123456789") == strlen(commit)) {
		strbuf_addf(&info->revision, "%s@{%s}", ref_stash, commit);
	} else {
		strbuf_addstr(&info->revision, commit);
	}

	revision = info->revision.buf;

	strbuf_addstr(&w_commit_rev, revision);

	ret = !get_oid(w_commit_rev.buf, &info->w_commit);

	strbuf_release(&w_commit_rev);

	if (!ret) {
		error(_("%s is not a valid reference"), revision);
		free_stash_info(info);
		return -1;
	}

	strbuf_addf(&b_commit_rev, "%s^1", revision);
	strbuf_addf(&w_tree_rev, "%s:", revision);
	strbuf_addf(&b_tree_rev, "%s^1:", revision);
	strbuf_addf(&i_tree_rev, "%s^2:", revision);

	ret = !get_oid(b_commit_rev.buf, &info->b_commit) &&
		!get_oid(w_tree_rev.buf, &info->w_tree) &&
		!get_oid(b_tree_rev.buf, &info->b_tree) &&
		!get_oid(i_tree_rev.buf, &info->i_tree);

	strbuf_release(&b_commit_rev);
	strbuf_release(&w_tree_rev);
	strbuf_release(&b_tree_rev);
	strbuf_release(&i_tree_rev);

	if (!ret) {
		error(_("'%s' is not a stash-like commit"), revision);
		free_stash_info(info);
		return -1;
	}

	strbuf_addf(&u_tree_rev, "%s^3:", revision);

	info->has_u = !get_oid(u_tree_rev.buf, &info->u_tree);

	strbuf_release(&u_tree_rev);

	end_of_rev = strchrnul(revision, '@');
	strbuf_add(&symbolic, revision, end_of_rev - revision);

	ret = get_symbolic_name(symbolic.buf, &out);
	strbuf_release(&symbolic);
	if (ret) {
		free_stash_info(info);
		strbuf_release(&out);
		return -1;
	}

	if (out.len - 1 == strlen(ref_stash))
		info->is_stash_ref = !strncmp(out.buf, ref_stash, out.len - 1);
	strbuf_release(&out);

	return 0;
}

static int do_clear_stash(void)
{
	struct object_id obj;
	if (get_oid(ref_stash, &obj))
		return 0;

	return delete_ref(NULL, ref_stash, &obj, 0);
}

static int clear_stash(int argc, const char **argv, const char *prefix)
{
	struct option options[] = {
		OPT_END()
	};

	argc = parse_options(argc, argv, prefix, options, git_stash_helper_clear_usage, PARSE_OPT_STOP_AT_NON_OPTION);

	if (argc != 0)
		return error(_("git stash--helper clear with parameters is unimplemented"));

	return do_clear_stash();
}

static int reset_tree(struct object_id *i_tree, int update, int reset)
{
	struct unpack_trees_options opts;
	int nr_trees = 1;
	struct tree_desc t[MAX_UNPACK_TREES];
	struct tree *tree;
	struct lock_file lock_file = LOCK_INIT;

	read_cache_preload(NULL);
	if (refresh_cache(REFRESH_QUIET))
		return -1;

	hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);

	memset(&opts, 0, sizeof(opts));

	tree = parse_tree_indirect(i_tree);
	if (parse_tree(tree))
		return -1;

	init_tree_desc(t, tree->buffer, tree->size);

	opts.head_idx = 1;
	opts.src_index = &the_index;
	opts.dst_index = &the_index;
	opts.merge = 1;
	opts.reset = reset;
	opts.update = update;
	opts.fn = oneway_merge;

	if (unpack_trees(nr_trees, t, &opts))
		return -1;

	if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
		return error(_("unable to write new index file"));

	return 0;
}

static int diff_tree_binary(struct strbuf *out, struct object_id *w_commit)
{
	struct child_process cp = CHILD_PROCESS_INIT;
	const char *w_commit_hex = oid_to_hex(w_commit);

	cp.git_cmd = 1;
	argv_array_pushl(&cp.args, "diff-tree", "--binary", NULL);
	argv_array_pushf(&cp.args, "%s^2^..%s^2", w_commit_hex, w_commit_hex);

	return pipe_command(&cp, NULL, 0, out, 0, NULL, 0);
}

static int apply_cached(struct strbuf *out)
{
	struct child_process cp = CHILD_PROCESS_INIT;

	cp.git_cmd = 1;
	argv_array_pushl(&cp.args, "apply", "--cached", NULL);
	return pipe_command(&cp, out->buf, out->len, NULL, 0, NULL, 0);
}

static int reset_head(const char *prefix)
{
	struct argv_array args = ARGV_ARRAY_INIT;

	argv_array_push(&args, "reset");
	return cmd_reset(args.argc, args.argv, prefix);
}

static int diff_cached_index(struct strbuf *out, struct object_id *c_tree)
{
	struct child_process cp = CHILD_PROCESS_INIT;
	const char *c_tree_hex = oid_to_hex(c_tree);

	cp.git_cmd = 1;
	argv_array_pushl(&cp.args, "diff-index", "--cached", "--name-only", "--diff-filter=A", NULL);
	argv_array_push(&cp.args, c_tree_hex);
	return pipe_command(&cp, NULL, 0, out, 0, NULL, 0);
}

static int update_index(struct strbuf *out)
{
	struct child_process cp = CHILD_PROCESS_INIT;

	cp.git_cmd = 1;
	argv_array_pushl(&cp.args, "update-index", "--add", "--stdin", NULL);
	return pipe_command(&cp, out->buf, out->len, NULL, 0, NULL, 0);
}

static int restore_untracked(struct object_id *u_tree)
{
	struct child_process cp = CHILD_PROCESS_INIT;
	int res;

	cp.git_cmd = 1;
	argv_array_push(&cp.args, "read-tree");
	argv_array_push(&cp.args, oid_to_hex(u_tree));
	argv_array_pushf(&cp.env_array, "GIT_INDEX_FILE=%s", stash_index_path);
	if (run_command(&cp)) {
		remove_path(stash_index_path);
		return -1;
	}

	child_process_init(&cp);
	cp.git_cmd = 1;
	argv_array_pushl(&cp.args, "checkout-index", "--all", NULL);
	argv_array_pushf(&cp.env_array, "GIT_INDEX_FILE=%s", stash_index_path);

	res = run_command(&cp);
	remove_path(stash_index_path);
	return res;
}

static int do_apply_stash(const char *prefix, struct stash_info *info, int index)
{
	struct merge_options o;
	struct object_id c_tree;
	struct object_id index_tree;
	const struct object_id *bases[1];
	int bases_count = 1;
	struct commit *result;
	int ret;
	int has_index = index;

	read_cache_preload(NULL);
	if (refresh_cache(REFRESH_QUIET))
		return -1;

	if (write_cache_as_tree(&c_tree, 0, NULL) || reset_tree(&c_tree, 0, 0))
		return error(_("Cannot apply a stash in the middle of a merge"));

	if (index) {
		if (!oidcmp(&info->b_tree, &info->i_tree) || !oidcmp(&c_tree, &info->i_tree)) {
			has_index = 0;
		} else {
			struct strbuf out = STRBUF_INIT;

			if (diff_tree_binary(&out, &info->w_commit)) {
				strbuf_release(&out);
				return -1;
			}

			ret = apply_cached(&out);
			strbuf_release(&out);
			if (ret)
				return -1;

			discard_cache();
			read_cache();
			if (write_cache_as_tree(&index_tree, 0, NULL))
				return -1;

			reset_head(prefix);
		}
	}

	if (info->has_u) {
		if (restore_untracked(&info->u_tree))
			return error(_("Could not restore untracked files from stash"));
	}

	init_merge_options(&o);

	o.branch1 = "Updated upstream";
	o.branch2 = "Stashed changes";

	if (!oidcmp(&info->b_tree, &c_tree))
		o.branch1 = "Version stash was based on";

	if (quiet)
		o.verbosity = 0;

	if (o.verbosity >= 3)
		printf_ln(_("Merging %s with %s"), o.branch1, o.branch2);

	bases[0] = &info->b_tree;

	ret = merge_recursive_generic(&o, &c_tree, &info->w_tree, bases_count, bases, &result);
	if (ret != 0) {
		struct argv_array args = ARGV_ARRAY_INIT;
		argv_array_push(&args, "rerere");
		cmd_rerere(args.argc, args.argv, prefix);

		if (index)
			fprintf_ln(stderr, _("Index was not unstashed."));

		return ret;
	}

	if (has_index) {
		if (reset_tree(&index_tree, 0, 0))
			return -1;
	} else {
		struct strbuf out = STRBUF_INIT;

		if (diff_cached_index(&out, &c_tree)) {
			strbuf_release(&out);
			return -1;
		}

		if (reset_tree(&c_tree, 0, 1)) {
			strbuf_release(&out);
			return -1;
		}

		ret = update_index(&out);
		strbuf_release(&out);
		if (ret)
			return -1;

		discard_cache();
	}

	if (!quiet) {
		struct argv_array args = ARGV_ARRAY_INIT;
		argv_array_push(&args, "status");
		cmd_status(args.argc, args.argv, prefix);
	}

	return 0;
}

static int apply_stash(int argc, const char **argv, const char *prefix)
{
	int index = 0;
	struct stash_info info;
	int ret;
	struct option options[] = {
		OPT__QUIET(&quiet, N_("be quiet, only report errors")),
		OPT_BOOL(0, "index", &index,
			N_("attempt to recreate the index")),
		OPT_END()
	};

	argc = parse_options(argc, argv, prefix, options,
			git_stash_helper_apply_usage, 0);

	if (get_stash_info(&info, argc, argv))
		return -1;

	ret = do_apply_stash(prefix, &info, index);
	free_stash_info(&info);
	return ret;
}

static int do_drop_stash(const char *prefix, struct stash_info *info)
{
	struct argv_array args = ARGV_ARRAY_INIT;
	int ret;
	struct child_process cp = CHILD_PROCESS_INIT;

	argv_array_pushl(&args, "reflog", "delete", "--updateref", "--rewrite", NULL);
	argv_array_push(&args, info->revision.buf);
	ret = cmd_reflog(args.argc, args.argv, prefix);
	if (!ret) {
		if (!quiet)
			printf(_("Dropped %s (%s)\n"), info->revision.buf, oid_to_hex(&info->w_commit));
	} else {
		return error(_("%s: Could not drop stash entry"), info->revision.buf);
	}

	cp.git_cmd = 1;
	/* Even though --quiet is specified, rev-parse still outputs the hash */
	cp.no_stdout = 1;
	argv_array_pushl(&cp.args, "rev-parse", "--verify", "--quiet", NULL);
	argv_array_pushf(&cp.args, "%s@{0}", ref_stash);
	ret = run_command(&cp);

	if (ret)
		do_clear_stash();

	return 0;
}

static int assert_stash_ref(struct stash_info *info)
{
	if (!info->is_stash_ref)
		return error(_("'%s' is not a stash reference"), info->revision.buf);

	return 0;
}

static int drop_stash(int argc, const char **argv, const char *prefix)
{
	struct stash_info info;
	int ret;
	struct option options[] = {
		OPT__QUIET(&quiet, N_("be quiet, only report errors")),
		OPT_END()
	};

	argc = parse_options(argc, argv, prefix, options,
			git_stash_helper_drop_usage, 0);

	if (get_stash_info(&info, argc, argv))
		return -1;

	if (assert_stash_ref(&info)) {
		free_stash_info(&info);
		return -1;
	}

	ret = do_drop_stash(prefix, &info);
	free_stash_info(&info);
	return ret;
}

int cmd_stash__helper(int argc, const char **argv, const char *prefix)
{
	int result = 0;
	pid_t pid = getpid();
	const char *index_file;

	struct option options[] = {
		OPT_END()
	};

	git_config(git_default_config, NULL);

	argc = parse_options(argc, argv, prefix, options, git_stash_helper_usage,
		PARSE_OPT_KEEP_UNKNOWN|PARSE_OPT_KEEP_DASHDASH);

	index_file = get_index_file();
	xsnprintf(stash_index_path, PATH_MAX, "%s.stash.%"PRIuMAX, index_file, (uintmax_t)pid);

	if (argc < 1)
		usage_with_options(git_stash_helper_usage, options);
	else if (!strcmp(argv[0], "apply"))
		result = apply_stash(argc, argv, prefix);
	else if (!strcmp(argv[0], "clear"))
		result = clear_stash(argc, argv, prefix);
	else if (!strcmp(argv[0], "drop"))
		result = drop_stash(argc, argv, prefix);
	else {
		error(_("unknown subcommand: %s"), argv[0]);
		usage_with_options(git_stash_helper_usage, options);
		result = 1;
	}

	return result;
}
debug log:

solving 640c545f5 ...
found 640c545f5 in https://public-inbox.org/git/20180328222129.22192-4-joel@teichroeb.net/
found 00e854734 in https://public-inbox.org/git/20180328222129.22192-3-joel@teichroeb.net/

applying [1/2] https://public-inbox.org/git/20180328222129.22192-3-joel@teichroeb.net/
diff --git a/builtin/stash--helper.c b/builtin/stash--helper.c
new file mode 100644
index 000000000..00e854734


applying [2/2] https://public-inbox.org/git/20180328222129.22192-4-joel@teichroeb.net/
diff --git a/builtin/stash--helper.c b/builtin/stash--helper.c
index 00e854734..640c545f5 100644

Checking patch builtin/stash--helper.c...
Applied patch builtin/stash--helper.c cleanly.
Checking patch builtin/stash--helper.c...
Applied patch builtin/stash--helper.c cleanly.

index at:
100644 640c545f55f0a20ee452b7fe5b1ec9118cf4944d	builtin/stash--helper.c

git@vger.kernel.org list mirror (unofficial, one of many)

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://public-inbox.org/git
	git clone --mirror http://ou63pmih66umazou.onion/git
	git clone --mirror http://czquwvybam4bgbro.onion/git
	git clone --mirror http://hjrcffqmbrq6wope.onion/git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V1 git git/ https://public-inbox.org/git \
		git@vger.kernel.org
	public-inbox-index git

Example config snippet for mirrors.
Newsgroups are available over NNTP:
	nntp://news.public-inbox.org/inbox.comp.version-control.git
	nntp://ou63pmih66umazou.onion/inbox.comp.version-control.git
	nntp://czquwvybam4bgbro.onion/inbox.comp.version-control.git
	nntp://hjrcffqmbrq6wope.onion/inbox.comp.version-control.git
	nntp://news.gmane.io/gmane.comp.version-control.git
 note: .onion URLs require Tor: https://www.torproject.org/

code repositories for the project(s) associated with this inbox:

	https://80x24.org/mirrors/git.git

AGPL code for this site: git clone https://public-inbox.org/public-inbox.git