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33db5f4d LT |
1 | /* |
2 | * Check-out files from the "current cache directory" | |
3 | * | |
4 | * Copyright (C) 2005 Linus Torvalds | |
5 | * | |
6 | * Careful: order of argument flags does matter. For example, | |
7 | * | |
05207a28 | 8 | * git checkout-index -a -f file.c |
33db5f4d LT |
9 | * |
10 | * Will first check out all files listed in the cache (but not | |
11 | * overwrite any old ones), and then force-checkout "file.c" a | |
12 | * second time (ie that one _will_ overwrite any old contents | |
13 | * with the same filename). | |
14 | * | |
05207a28 HO |
15 | * Also, just doing "git checkout-index" does nothing. You probably |
16 | * meant "git checkout-index -a". And if you want to force it, you | |
17 | * want "git checkout-index -f -a". | |
33db5f4d LT |
18 | * |
19 | * Intuitiveness is not the goal here. Repeatability is. The | |
20 | * reason for the "no arguments means no work" thing is that | |
21 | * from scripts you are supposed to be able to do things like | |
22 | * | |
05207a28 | 23 | * find . -name '*.h' -print0 | xargs -0 git checkout-index -f -- |
33db5f4d | 24 | * |
9debe63d SP |
25 | * or: |
26 | * | |
05207a28 | 27 | * find . -name '*.h' -print0 | git checkout-index -f -z --stdin |
9debe63d | 28 | * |
33db5f4d LT |
29 | * which will force all existing *.h files to be replaced with |
30 | * their cached copies. If an empty command line implied "all", | |
31 | * then this would force-refresh everything in the cache, which | |
32 | * was not the point. | |
33 | * | |
34 | * Oh, and the "--" is just a good idea when you know the rest | |
35 | * will be filenames. Just so that you wouldn't have a filename | |
36 | * of "-a" causing problems (not possible in the above example, | |
37 | * but get used to it in scripting!). | |
38 | */ | |
baffc0e7 | 39 | #include "builtin.h" |
33db5f4d | 40 | #include "cache.h" |
9debe63d | 41 | #include "quote.h" |
bad68ec9 | 42 | #include "cache-tree.h" |
a6c7db1b | 43 | #include "parse-options.h" |
33db5f4d | 44 | |
de84f99c | 45 | #define CHECKOUT_ALL 4 |
de84f99c | 46 | static int line_termination = '\n'; |
3bd348ae | 47 | static int checkout_stage; /* default to checkout stage0 */ |
de84f99c | 48 | static int to_tempfile; |
095c424d | 49 | static char topath[4][PATH_MAX + 1]; |
c3e9a653 | 50 | |
344c52ae | 51 | static struct checkout state; |
33db5f4d | 52 | |
e414156a | 53 | static void write_tempfile_record(const char *name, int prefix_length) |
de84f99c SP |
54 | { |
55 | int i; | |
56 | ||
57 | if (CHECKOUT_ALL == checkout_stage) { | |
58 | for (i = 1; i < 4; i++) { | |
59 | if (i > 1) | |
60 | putchar(' '); | |
61 | if (topath[i][0]) | |
62 | fputs(topath[i], stdout); | |
63 | else | |
64 | putchar('.'); | |
65 | } | |
66 | } else | |
67 | fputs(topath[checkout_stage], stdout); | |
68 | ||
69 | putchar('\t'); | |
663af342 | 70 | write_name_quoted(name + prefix_length, stdout, line_termination); |
de84f99c SP |
71 | |
72 | for (i = 0; i < 4; i++) { | |
73 | topath[i][0] = 0; | |
74 | } | |
75 | } | |
76 | ||
e414156a | 77 | static int checkout_file(const char *name, int prefix_length) |
33db5f4d | 78 | { |
3bd348ae JH |
79 | int namelen = strlen(name); |
80 | int pos = cache_name_pos(name, namelen); | |
81 | int has_same_name = 0; | |
de84f99c SP |
82 | int did_checkout = 0; |
83 | int errs = 0; | |
3bd348ae JH |
84 | |
85 | if (pos < 0) | |
86 | pos = -pos - 1; | |
87 | ||
88 | while (pos < active_nr) { | |
89 | struct cache_entry *ce = active_cache[pos]; | |
f4f9adae | 90 | if (ce_namelen(ce) != namelen || |
3bd348ae JH |
91 | memcmp(ce->name, name, namelen)) |
92 | break; | |
93 | has_same_name = 1; | |
3bd348ae | 94 | pos++; |
de84f99c SP |
95 | if (ce_stage(ce) != checkout_stage |
96 | && (CHECKOUT_ALL != checkout_stage || !ce_stage(ce))) | |
97 | continue; | |
98 | did_checkout = 1; | |
99 | if (checkout_entry(ce, &state, | |
100 | to_tempfile ? topath[ce_stage(ce)] : NULL) < 0) | |
101 | errs++; | |
102 | } | |
103 | ||
104 | if (did_checkout) { | |
105 | if (to_tempfile) | |
e414156a | 106 | write_tempfile_record(name, prefix_length); |
de84f99c | 107 | return errs > 0 ? -1 : 0; |
33db5f4d | 108 | } |
3bd348ae JH |
109 | |
110 | if (!state.quiet) { | |
05207a28 | 111 | fprintf(stderr, "git checkout-index: %s ", name); |
3bd348ae JH |
112 | if (!has_same_name) |
113 | fprintf(stderr, "is not in the cache"); | |
114 | else if (checkout_stage) | |
115 | fprintf(stderr, "does not exist at stage %d", | |
116 | checkout_stage); | |
117 | else | |
118 | fprintf(stderr, "is unmerged"); | |
119 | fputc('\n', stderr); | |
120 | } | |
121 | return -1; | |
33db5f4d LT |
122 | } |
123 | ||
f7f0fbfc | 124 | static void checkout_all(const char *prefix, int prefix_length) |
33db5f4d | 125 | { |
4b12dae6 | 126 | int i, errs = 0; |
5142db69 | 127 | struct cache_entry* last_ce = NULL; |
33db5f4d LT |
128 | |
129 | for (i = 0; i < active_nr ; i++) { | |
130 | struct cache_entry *ce = active_cache[i]; | |
de84f99c SP |
131 | if (ce_stage(ce) != checkout_stage |
132 | && (CHECKOUT_ALL != checkout_stage || !ce_stage(ce))) | |
d9f98eeb | 133 | continue; |
c3e9a653 | 134 | if (prefix && *prefix && |
3bd348ae JH |
135 | (ce_namelen(ce) <= prefix_length || |
136 | memcmp(prefix, ce->name, prefix_length))) | |
c3e9a653 | 137 | continue; |
de84f99c SP |
138 | if (last_ce && to_tempfile) { |
139 | if (ce_namelen(last_ce) != ce_namelen(ce) | |
140 | || memcmp(last_ce->name, ce->name, ce_namelen(ce))) | |
e414156a | 141 | write_tempfile_record(last_ce->name, prefix_length); |
de84f99c SP |
142 | } |
143 | if (checkout_entry(ce, &state, | |
144 | to_tempfile ? topath[ce_stage(ce)] : NULL) < 0) | |
4b12dae6 | 145 | errs++; |
de84f99c | 146 | last_ce = ce; |
33db5f4d | 147 | } |
de84f99c | 148 | if (last_ce && to_tempfile) |
e414156a | 149 | write_tempfile_record(last_ce->name, prefix_length); |
4b12dae6 JH |
150 | if (errs) |
151 | /* we have already done our error reporting. | |
152 | * exit with the same code as die(). | |
153 | */ | |
154 | exit(128); | |
33db5f4d LT |
155 | } |
156 | ||
a6c7db1b MV |
157 | static const char * const builtin_checkout_index_usage[] = { |
158 | "git checkout-index [options] [--] <file>...", | |
159 | NULL | |
160 | }; | |
d46ad9c9 | 161 | |
021b6e45 | 162 | static struct lock_file lock_file; |
31f584c2 | 163 | |
a6c7db1b MV |
164 | static int option_parse_u(const struct option *opt, |
165 | const char *arg, int unset) | |
166 | { | |
167 | int *newfd = opt->value; | |
168 | ||
169 | state.refresh_cache = 1; | |
170 | if (*newfd < 0) | |
171 | *newfd = hold_locked_index(&lock_file, 1); | |
172 | return 0; | |
173 | } | |
174 | ||
175 | static int option_parse_z(const struct option *opt, | |
176 | const char *arg, int unset) | |
177 | { | |
178 | if (unset) | |
179 | line_termination = '\n'; | |
180 | else | |
181 | line_termination = 0; | |
182 | return 0; | |
183 | } | |
184 | ||
185 | static int option_parse_prefix(const struct option *opt, | |
186 | const char *arg, int unset) | |
187 | { | |
188 | state.base_dir = arg; | |
189 | state.base_dir_len = strlen(arg); | |
190 | return 0; | |
191 | } | |
192 | ||
193 | static int option_parse_stage(const struct option *opt, | |
194 | const char *arg, int unset) | |
195 | { | |
196 | if (!strcmp(arg, "all")) { | |
197 | to_tempfile = 1; | |
198 | checkout_stage = CHECKOUT_ALL; | |
199 | } else { | |
200 | int ch = arg[0]; | |
201 | if ('1' <= ch && ch <= '3') | |
202 | checkout_stage = arg[0] - '0'; | |
203 | else | |
204 | die("stage should be between 1 and 3 or all"); | |
205 | } | |
206 | return 0; | |
207 | } | |
208 | ||
e414156a | 209 | int cmd_checkout_index(int argc, const char **argv, const char *prefix) |
33db5f4d | 210 | { |
a65a686f | 211 | int i; |
415e96c8 | 212 | int newfd = -1; |
a65a686f | 213 | int all = 0; |
9debe63d | 214 | int read_from_stdin = 0; |
e414156a | 215 | int prefix_length; |
a6c7db1b MV |
216 | int force = 0, quiet = 0, not_new = 0; |
217 | struct option builtin_checkout_index_options[] = { | |
218 | OPT_BOOLEAN('a', "all", &all, | |
219 | "checks out all files in the index"), | |
220 | OPT_BOOLEAN('f', "force", &force, | |
221 | "forces overwrite of existing files"), | |
222 | OPT__QUIET(&quiet), | |
223 | OPT_BOOLEAN('n', "no-create", ¬_new, | |
224 | "don't checkout new files"), | |
225 | { OPTION_CALLBACK, 'u', "index", &newfd, NULL, | |
226 | "update stat information in the index file", | |
227 | PARSE_OPT_NOARG, option_parse_u }, | |
228 | { OPTION_CALLBACK, 'z', NULL, NULL, NULL, | |
229 | "paths are separated with NUL character", | |
230 | PARSE_OPT_NOARG, option_parse_z }, | |
231 | OPT_BOOLEAN(0, "stdin", &read_from_stdin, | |
232 | "read list of paths from the standard input"), | |
233 | OPT_BOOLEAN(0, "temp", &to_tempfile, | |
234 | "write the content to temporary files"), | |
235 | OPT_CALLBACK(0, "prefix", NULL, "string", | |
236 | "when creating files, prepend <string>", | |
237 | option_parse_prefix), | |
238 | OPT_CALLBACK(0, "stage", NULL, NULL, | |
239 | "copy out the files from named stage", | |
240 | option_parse_stage), | |
241 | OPT_END() | |
242 | }; | |
33db5f4d | 243 | |
ef90d6d4 | 244 | git_config(git_default_config, NULL); |
e414156a | 245 | state.base_dir = ""; |
c3e9a653 JH |
246 | prefix_length = prefix ? strlen(prefix) : 0; |
247 | ||
33db5f4d | 248 | if (read_cache() < 0) { |
2de381f9 | 249 | die("invalid cache"); |
33db5f4d LT |
250 | } |
251 | ||
a6c7db1b MV |
252 | argc = parse_options(argc, argv, builtin_checkout_index_options, |
253 | builtin_checkout_index_usage, 0); | |
254 | state.force = force; | |
255 | state.quiet = quiet; | |
256 | state.not_new = not_new; | |
a65a686f | 257 | |
de84f99c | 258 | if (state.base_dir_len || to_tempfile) { |
a65a686f LT |
259 | /* when --prefix is specified we do not |
260 | * want to update cache. | |
261 | */ | |
262 | if (state.refresh_cache) { | |
021b6e45 | 263 | rollback_lock_file(&lock_file); |
4ed7cd3a | 264 | newfd = -1; |
a65a686f LT |
265 | } |
266 | state.refresh_cache = 0; | |
267 | } | |
268 | ||
269 | /* Check out named files first */ | |
a6c7db1b | 270 | for (i = 0; i < argc; i++) { |
a65a686f | 271 | const char *arg = argv[i]; |
dc46da22 | 272 | const char *p; |
a65a686f LT |
273 | |
274 | if (all) | |
7e44c935 | 275 | die("git checkout-index: don't mix '--all' and explicit filenames"); |
9debe63d | 276 | if (read_from_stdin) |
7e44c935 | 277 | die("git checkout-index: don't mix '--stdin' and explicit filenames"); |
dc46da22 | 278 | p = prefix_path(prefix, prefix_length, arg); |
e414156a | 279 | checkout_file(p, prefix_length); |
be65e7d9 | 280 | if (p < arg || p > arg + strlen(arg)) |
dc46da22 | 281 | free((char*)p); |
33db5f4d | 282 | } |
415e96c8 | 283 | |
9debe63d | 284 | if (read_from_stdin) { |
f285a2d7 | 285 | struct strbuf buf = STRBUF_INIT, nbuf = STRBUF_INIT; |
7fb1011e | 286 | |
9debe63d | 287 | if (all) |
7e44c935 | 288 | die("git checkout-index: don't mix '--all' and '--stdin'"); |
7fb1011e | 289 | |
7fb1011e | 290 | while (strbuf_getline(&buf, stdin, line_termination) != EOF) { |
dc46da22 | 291 | const char *p; |
7fb1011e PH |
292 | if (line_termination && buf.buf[0] == '"') { |
293 | strbuf_reset(&nbuf); | |
294 | if (unquote_c_style(&nbuf, buf.buf, NULL)) | |
295 | die("line is badly quoted"); | |
296 | strbuf_swap(&buf, &nbuf); | |
297 | } | |
298 | p = prefix_path(prefix, prefix_length, buf.buf); | |
e414156a | 299 | checkout_file(p, prefix_length); |
7fb1011e | 300 | if (p < buf.buf || p > buf.buf + buf.len) |
dc46da22 | 301 | free((char *)p); |
9debe63d | 302 | } |
7fb1011e | 303 | strbuf_release(&nbuf); |
e6c019d0 | 304 | strbuf_release(&buf); |
9debe63d SP |
305 | } |
306 | ||
a65a686f | 307 | if (all) |
e414156a | 308 | checkout_all(prefix, prefix_length); |
a65a686f | 309 | |
415e96c8 JH |
310 | if (0 <= newfd && |
311 | (write_cache(newfd, active_cache, active_nr) || | |
4ed7cd3a | 312 | commit_locked_index(&lock_file))) |
021b6e45 | 313 | die("Unable to write new index file"); |
33db5f4d LT |
314 | return 0; |
315 | } |