freshlybakedca.ke
Git fork
1/*
2 * Check-out files from the "current cache directory"
3 *
4 * Copyright (C) 2005 Linus Torvalds
5 *
6 */
7
8#define DISABLE_SIGN_COMPARE_WARNINGS
9
10#include "builtin.h"
11#include "config.h"
12#include "environment.h"
13#include "gettext.h"
14#include "lockfile.h"
15#include "quote.h"
16#include "cache-tree.h"
17#include "parse-options.h"
18#include "entry.h"
19#include "parallel-checkout.h"
20#include "read-cache-ll.h"
21#include "setup.h"
22#include "sparse-index.h"
23
24#define CHECKOUT_ALL 4
25static int nul_term_line;
26static int checkout_stage; /* default to checkout stage0 */
27static int ignore_skip_worktree; /* default to 0 */
28static int to_tempfile = -1;
29static char topath[4][TEMPORARY_FILENAME_LENGTH + 1];
30
31static struct checkout state = CHECKOUT_INIT;
32
33static void write_tempfile_record(const char *name, const char *prefix)
34{
35 int i;
36 int have_tempname = 0;
37
38 if (CHECKOUT_ALL == checkout_stage) {
39 for (i = 1; i < 4; i++)
40 if (topath[i][0]) {
41 have_tempname = 1;
42 break;
43 }
44
45 if (have_tempname) {
46 for (i = 1; i < 4; i++) {
47 if (i > 1)
48 putchar(' ');
49 if (topath[i][0])
50 fputs(topath[i], stdout);
51 else
52 putchar('.');
53 }
54 }
55 } else if (topath[checkout_stage][0]) {
56 have_tempname = 1;
57 fputs(topath[checkout_stage], stdout);
58 }
59
60 if (have_tempname) {
61 putchar('\t');
62 write_name_quoted_relative(name, prefix, stdout,
63 nul_term_line ? '\0' : '\n');
64 }
65
66 for (i = 0; i < 4; i++) {
67 topath[i][0] = 0;
68 }
69}
70
71static int checkout_file(struct index_state *index, const char *name, const char *prefix)
72{
73 int namelen = strlen(name);
74 int pos = index_name_pos(index, name, namelen);
75 int has_same_name = 0;
76 int is_file = 0;
77 int is_skipped = 1;
78 int did_checkout = 0;
79 int errs = 0;
80
81 if (pos < 0)
82 pos = -pos - 1;
83
84 while (pos < index->cache_nr) {
85 struct cache_entry *ce = index->cache[pos];
86 if (ce_namelen(ce) != namelen ||
87 memcmp(ce->name, name, namelen))
88 break;
89 has_same_name = 1;
90 pos++;
91 if (S_ISSPARSEDIR(ce->ce_mode))
92 break;
93 is_file = 1;
94 if (!ignore_skip_worktree && ce_skip_worktree(ce))
95 break;
96 is_skipped = 0;
97 if (ce_stage(ce) != checkout_stage
98 && (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
99 continue;
100 did_checkout = 1;
101 if (checkout_entry(ce, &state,
102 to_tempfile ? topath[ce_stage(ce)] : NULL,
103 NULL) < 0)
104 errs++;
105 }
106
107 if (did_checkout) {
108 if (to_tempfile)
109 write_tempfile_record(name, prefix);
110 return errs > 0 ? -1 : 0;
111 }
112
113 /*
114 * At this point we know we didn't try to check anything out. If it was
115 * because we did find an entry but it was stage 0, that's not an
116 * error.
117 */
118 if (has_same_name && checkout_stage == CHECKOUT_ALL)
119 return 0;
120
121 if (!state.quiet) {
122 fprintf(stderr, "git checkout-index: %s ", name);
123 if (!has_same_name)
124 fprintf(stderr, "is not in the cache");
125 else if (!is_file)
126 fprintf(stderr, "is a sparse directory");
127 else if (is_skipped)
128 fprintf(stderr, "has skip-worktree enabled; "
129 "use '--ignore-skip-worktree-bits' to checkout");
130 else if (checkout_stage)
131 fprintf(stderr, "does not exist at stage %d",
132 checkout_stage);
133 else
134 fprintf(stderr, "is unmerged");
135 fputc('\n', stderr);
136 }
137 return -1;
138}
139
140static int checkout_all(struct index_state *index, const char *prefix, int prefix_length)
141{
142 int i, errs = 0;
143 struct cache_entry *last_ce = NULL;
144
145 for (i = 0; i < index->cache_nr ; i++) {
146 struct cache_entry *ce = index->cache[i];
147
148 if (S_ISSPARSEDIR(ce->ce_mode)) {
149 if (!ce_skip_worktree(ce))
150 BUG("sparse directory '%s' does not have skip-worktree set", ce->name);
151
152 /*
153 * If the current entry is a sparse directory and skip-worktree
154 * entries are being checked out, expand the index and continue
155 * the loop on the current index position (now pointing to the
156 * first entry inside the expanded sparse directory).
157 */
158 if (ignore_skip_worktree) {
159 ensure_full_index(index);
160 ce = index->cache[i];
161 }
162 }
163
164 if (!ignore_skip_worktree && ce_skip_worktree(ce))
165 continue;
166 if (ce_stage(ce) != checkout_stage
167 && (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
168 continue;
169 if (prefix && *prefix &&
170 (ce_namelen(ce) <= prefix_length ||
171 memcmp(prefix, ce->name, prefix_length)))
172 continue;
173 if (last_ce && to_tempfile) {
174 if (ce_namelen(last_ce) != ce_namelen(ce)
175 || memcmp(last_ce->name, ce->name, ce_namelen(ce)))
176 write_tempfile_record(last_ce->name, prefix);
177 }
178 if (checkout_entry(ce, &state,
179 to_tempfile ? topath[ce_stage(ce)] : NULL,
180 NULL) < 0)
181 errs++;
182 last_ce = ce;
183 }
184 if (last_ce && to_tempfile)
185 write_tempfile_record(last_ce->name, prefix);
186 return !!errs;
187}
188
189static const char * const builtin_checkout_index_usage[] = {
190 N_("git checkout-index [<options>] [--] [<file>...]"),
191 NULL
192};
193
194static int option_parse_stage(const struct option *opt,
195 const char *arg, int unset)
196{
197 int *stage = opt->value;
198
199 BUG_ON_OPT_NEG(unset);
200
201 if (!strcmp(arg, "all")) {
202 *stage = CHECKOUT_ALL;
203 } else {
204 int ch = arg[0];
205 if ('1' <= ch && ch <= '3')
206 *stage = arg[0] - '0';
207 else
208 die(_("stage should be between 1 and 3 or all"));
209 }
210 return 0;
211}
212
213int cmd_checkout_index(int argc,
214 const char **argv,
215 const char *prefix,
216 struct repository *repo)
217{
218 int i;
219 struct lock_file lock_file = LOCK_INIT;
220 int all = 0;
221 int read_from_stdin = 0;
222 int prefix_length;
223 int force = 0, quiet = 0, not_new = 0;
224 int index_opt = 0;
225 int err = 0;
226 int pc_workers, pc_threshold;
227 struct option builtin_checkout_index_options[] = {
228 OPT_BOOL('a', "all", &all,
229 N_("check out all files in the index")),
230 OPT_BOOL(0, "ignore-skip-worktree-bits", &ignore_skip_worktree,
231 N_("do not skip files with skip-worktree set")),
232 OPT__FORCE(&force, N_("force overwrite of existing files"), 0),
233 OPT__QUIET(&quiet,
234 N_("no warning for existing files and files not in index")),
235 OPT_BOOL('n', "no-create", ¬_new,
236 N_("don't checkout new files")),
237 OPT_BOOL('u', "index", &index_opt,
238 N_("update stat information in the index file")),
239 OPT_BOOL('z', NULL, &nul_term_line,
240 N_("paths are separated with NUL character")),
241 OPT_BOOL(0, "stdin", &read_from_stdin,
242 N_("read list of paths from the standard input")),
243 OPT_BOOL(0, "temp", &to_tempfile,
244 N_("write the content to temporary files")),
245 OPT_STRING(0, "prefix", &state.base_dir, N_("string"),
246 N_("when creating files, prepend <string>")),
247 OPT_CALLBACK_F(0, "stage", &checkout_stage, "(1|2|3|all)",
248 N_("copy out the files from named stage"),
249 PARSE_OPT_NONEG, option_parse_stage),
250 OPT_END()
251 };
252
253 show_usage_with_options_if_asked(argc, argv,
254 builtin_checkout_index_usage,
255 builtin_checkout_index_options);
256 repo_config(repo, git_default_config, NULL);
257 prefix_length = prefix ? strlen(prefix) : 0;
258
259 prepare_repo_settings(repo);
260 repo->settings.command_requires_full_index = 0;
261
262 if (repo_read_index(repo) < 0) {
263 die("invalid cache");
264 }
265
266 argc = parse_options(argc, argv, prefix, builtin_checkout_index_options,
267 builtin_checkout_index_usage, 0);
268 state.istate = repo->index;
269 state.force = force;
270 state.quiet = quiet;
271 state.not_new = not_new;
272
273 if (!state.base_dir)
274 state.base_dir = "";
275 state.base_dir_len = strlen(state.base_dir);
276
277 if (to_tempfile < 0)
278 to_tempfile = (checkout_stage == CHECKOUT_ALL);
279 if (!to_tempfile && checkout_stage == CHECKOUT_ALL)
280 die(_("options '%s' and '%s' cannot be used together"),
281 "--stage=all", "--no-temp");
282
283 /*
284 * when --prefix is specified we do not want to update cache.
285 */
286 if (index_opt && !state.base_dir_len && !to_tempfile) {
287 state.refresh_cache = 1;
288 state.istate = repo->index;
289 repo_hold_locked_index(repo, &lock_file,
290 LOCK_DIE_ON_ERROR);
291 }
292
293 get_parallel_checkout_configs(&pc_workers, &pc_threshold);
294 if (pc_workers > 1)
295 init_parallel_checkout();
296
297 /* Check out named files first */
298 for (i = 0; i < argc; i++) {
299 const char *arg = argv[i];
300 char *p;
301
302 if (all)
303 die("git checkout-index: don't mix '--all' and explicit filenames");
304 if (read_from_stdin)
305 die("git checkout-index: don't mix '--stdin' and explicit filenames");
306 p = prefix_path(prefix, prefix_length, arg);
307 err |= checkout_file(repo->index, p, prefix);
308 free(p);
309 }
310
311 if (read_from_stdin) {
312 struct strbuf buf = STRBUF_INIT;
313 struct strbuf unquoted = STRBUF_INIT;
314 strbuf_getline_fn getline_fn;
315
316 if (all)
317 die("git checkout-index: don't mix '--all' and '--stdin'");
318
319 getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf;
320 while (getline_fn(&buf, stdin) != EOF) {
321 char *p;
322 if (!nul_term_line && buf.buf[0] == '"') {
323 strbuf_reset(&unquoted);
324 if (unquote_c_style(&unquoted, buf.buf, NULL))
325 die("line is badly quoted");
326 strbuf_swap(&buf, &unquoted);
327 }
328 p = prefix_path(prefix, prefix_length, buf.buf);
329 err |= checkout_file(repo->index, p, prefix);
330 free(p);
331 }
332 strbuf_release(&unquoted);
333 strbuf_release(&buf);
334 }
335
336 if (all)
337 err |= checkout_all(repo->index, prefix, prefix_length);
338
339 if (pc_workers > 1)
340 err |= run_parallel_checkout(&state, pc_workers, pc_threshold,
341 NULL, NULL);
342
343 if (err)
344 return 1;
345
346 if (is_lock_file_locked(&lock_file) &&
347 write_locked_index(repo->index, &lock_file, COMMIT_LOCK))
348 die("Unable to write new index file");
349 return 0;
350}