Git 2.21-rc1
[git.git] / builtin / checkout-index.c
blob1ac1cc290ed7db86d3ae42b7df2246dad1c507e3
1 /*
2 * Check-out files from the "current cache directory"
4 * Copyright (C) 2005 Linus Torvalds
6 */
7 #define USE_THE_INDEX_COMPATIBILITY_MACROS
8 #include "builtin.h"
9 #include "config.h"
10 #include "lockfile.h"
11 #include "quote.h"
12 #include "cache-tree.h"
13 #include "parse-options.h"
15 #define CHECKOUT_ALL 4
16 static int nul_term_line;
17 static int checkout_stage; /* default to checkout stage0 */
18 static int to_tempfile;
19 static char topath[4][TEMPORARY_FILENAME_LENGTH + 1];
21 static struct checkout state = CHECKOUT_INIT;
23 static void write_tempfile_record(const char *name, const char *prefix)
25 int i;
27 if (CHECKOUT_ALL == checkout_stage) {
28 for (i = 1; i < 4; i++) {
29 if (i > 1)
30 putchar(' ');
31 if (topath[i][0])
32 fputs(topath[i], stdout);
33 else
34 putchar('.');
36 } else
37 fputs(topath[checkout_stage], stdout);
39 putchar('\t');
40 write_name_quoted_relative(name, prefix, stdout,
41 nul_term_line ? '\0' : '\n');
43 for (i = 0; i < 4; i++) {
44 topath[i][0] = 0;
48 static int checkout_file(const char *name, const char *prefix)
50 int namelen = strlen(name);
51 int pos = cache_name_pos(name, namelen);
52 int has_same_name = 0;
53 int did_checkout = 0;
54 int errs = 0;
56 if (pos < 0)
57 pos = -pos - 1;
59 while (pos < active_nr) {
60 struct cache_entry *ce = active_cache[pos];
61 if (ce_namelen(ce) != namelen ||
62 memcmp(ce->name, name, namelen))
63 break;
64 has_same_name = 1;
65 pos++;
66 if (ce_stage(ce) != checkout_stage
67 && (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
68 continue;
69 did_checkout = 1;
70 if (checkout_entry(ce, &state,
71 to_tempfile ? topath[ce_stage(ce)] : NULL,
72 NULL) < 0)
73 errs++;
76 if (did_checkout) {
77 if (to_tempfile)
78 write_tempfile_record(name, prefix);
79 return errs > 0 ? -1 : 0;
82 if (!state.quiet) {
83 fprintf(stderr, "git checkout-index: %s ", name);
84 if (!has_same_name)
85 fprintf(stderr, "is not in the cache");
86 else if (checkout_stage)
87 fprintf(stderr, "does not exist at stage %d",
88 checkout_stage);
89 else
90 fprintf(stderr, "is unmerged");
91 fputc('\n', stderr);
93 return -1;
96 static void checkout_all(const char *prefix, int prefix_length)
98 int i, errs = 0;
99 struct cache_entry *last_ce = NULL;
101 for (i = 0; i < active_nr ; i++) {
102 struct cache_entry *ce = active_cache[i];
103 if (ce_stage(ce) != checkout_stage
104 && (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
105 continue;
106 if (prefix && *prefix &&
107 (ce_namelen(ce) <= prefix_length ||
108 memcmp(prefix, ce->name, prefix_length)))
109 continue;
110 if (last_ce && to_tempfile) {
111 if (ce_namelen(last_ce) != ce_namelen(ce)
112 || memcmp(last_ce->name, ce->name, ce_namelen(ce)))
113 write_tempfile_record(last_ce->name, prefix);
115 if (checkout_entry(ce, &state,
116 to_tempfile ? topath[ce_stage(ce)] : NULL,
117 NULL) < 0)
118 errs++;
119 last_ce = ce;
121 if (last_ce && to_tempfile)
122 write_tempfile_record(last_ce->name, prefix);
123 if (errs)
124 /* we have already done our error reporting.
125 * exit with the same code as die().
127 exit(128);
130 static const char * const builtin_checkout_index_usage[] = {
131 N_("git checkout-index [<options>] [--] [<file>...]"),
132 NULL
135 static int option_parse_stage(const struct option *opt,
136 const char *arg, int unset)
138 BUG_ON_OPT_NEG(unset);
140 if (!strcmp(arg, "all")) {
141 to_tempfile = 1;
142 checkout_stage = CHECKOUT_ALL;
143 } else {
144 int ch = arg[0];
145 if ('1' <= ch && ch <= '3')
146 checkout_stage = arg[0] - '0';
147 else
148 die(_("stage should be between 1 and 3 or all"));
150 return 0;
153 int cmd_checkout_index(int argc, const char **argv, const char *prefix)
155 int i;
156 struct lock_file lock_file = LOCK_INIT;
157 int all = 0;
158 int read_from_stdin = 0;
159 int prefix_length;
160 int force = 0, quiet = 0, not_new = 0;
161 int index_opt = 0;
162 struct option builtin_checkout_index_options[] = {
163 OPT_BOOL('a', "all", &all,
164 N_("check out all files in the index")),
165 OPT__FORCE(&force, N_("force overwrite of existing files"), 0),
166 OPT__QUIET(&quiet,
167 N_("no warning for existing files and files not in index")),
168 OPT_BOOL('n', "no-create", &not_new,
169 N_("don't checkout new files")),
170 OPT_BOOL('u', "index", &index_opt,
171 N_("update stat information in the index file")),
172 OPT_BOOL('z', NULL, &nul_term_line,
173 N_("paths are separated with NUL character")),
174 OPT_BOOL(0, "stdin", &read_from_stdin,
175 N_("read list of paths from the standard input")),
176 OPT_BOOL(0, "temp", &to_tempfile,
177 N_("write the content to temporary files")),
178 OPT_STRING(0, "prefix", &state.base_dir, N_("string"),
179 N_("when creating files, prepend <string>")),
180 { OPTION_CALLBACK, 0, "stage", NULL, "(1|2|3|all)",
181 N_("copy out the files from named stage"),
182 PARSE_OPT_NONEG, option_parse_stage },
183 OPT_END()
186 if (argc == 2 && !strcmp(argv[1], "-h"))
187 usage_with_options(builtin_checkout_index_usage,
188 builtin_checkout_index_options);
189 git_config(git_default_config, NULL);
190 prefix_length = prefix ? strlen(prefix) : 0;
192 if (read_cache() < 0) {
193 die("invalid cache");
196 argc = parse_options(argc, argv, prefix, builtin_checkout_index_options,
197 builtin_checkout_index_usage, 0);
198 state.istate = &the_index;
199 state.force = force;
200 state.quiet = quiet;
201 state.not_new = not_new;
203 if (!state.base_dir)
204 state.base_dir = "";
205 state.base_dir_len = strlen(state.base_dir);
208 * when --prefix is specified we do not want to update cache.
210 if (index_opt && !state.base_dir_len && !to_tempfile) {
211 state.refresh_cache = 1;
212 state.istate = &the_index;
213 hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
216 /* Check out named files first */
217 for (i = 0; i < argc; i++) {
218 const char *arg = argv[i];
219 char *p;
221 if (all)
222 die("git checkout-index: don't mix '--all' and explicit filenames");
223 if (read_from_stdin)
224 die("git checkout-index: don't mix '--stdin' and explicit filenames");
225 p = prefix_path(prefix, prefix_length, arg);
226 checkout_file(p, prefix);
227 free(p);
230 if (read_from_stdin) {
231 struct strbuf buf = STRBUF_INIT;
232 struct strbuf unquoted = STRBUF_INIT;
233 strbuf_getline_fn getline_fn;
235 if (all)
236 die("git checkout-index: don't mix '--all' and '--stdin'");
238 getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf;
239 while (getline_fn(&buf, stdin) != EOF) {
240 char *p;
241 if (!nul_term_line && buf.buf[0] == '"') {
242 strbuf_reset(&unquoted);
243 if (unquote_c_style(&unquoted, buf.buf, NULL))
244 die("line is badly quoted");
245 strbuf_swap(&buf, &unquoted);
247 p = prefix_path(prefix, prefix_length, buf.buf);
248 checkout_file(p, prefix);
249 free(p);
251 strbuf_release(&unquoted);
252 strbuf_release(&buf);
255 if (all)
256 checkout_all(prefix, prefix_length);
258 if (is_lock_file_locked(&lock_file) &&
259 write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
260 die("Unable to write new index file");
261 return 0;