checkout-index.con commit imap-send: Remove unused 'use_namespace' variable (aa2577a)
   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 *
   8 *      git-checkout-index -a -f file.c
   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 *
  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".
  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 *
  23 *      find . -name '*.h' -print0 | xargs -0 git-checkout-index -f --
  24 *
  25 * or:
  26 *
  27 *      find . -name '*.h' -print0 | git-checkout-index -f -z --stdin
  28 *
  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 */
  39#include "cache.h"
  40#include "strbuf.h"
  41#include "quote.h"
  42
  43#define CHECKOUT_ALL 4
  44static const char *prefix;
  45static int prefix_length;
  46static int line_termination = '\n';
  47static int checkout_stage; /* default to checkout stage0 */
  48static int to_tempfile;
  49static char topath[4][MAXPATHLEN+1];
  50
  51static struct checkout state = {
  52        .base_dir = "",
  53        .base_dir_len = 0,
  54        .force = 0,
  55        .quiet = 0,
  56        .not_new = 0,
  57        .refresh_cache = 0,
  58};
  59
  60static void write_tempfile_record (const char *name)
  61{
  62        int i;
  63
  64        if (CHECKOUT_ALL == checkout_stage) {
  65                for (i = 1; i < 4; i++) {
  66                        if (i > 1)
  67                                putchar(' ');
  68                        if (topath[i][0])
  69                                fputs(topath[i], stdout);
  70                        else
  71                                putchar('.');
  72                }
  73        } else
  74                fputs(topath[checkout_stage], stdout);
  75
  76        putchar('\t');
  77        write_name_quoted("", 0, name + prefix_length,
  78                line_termination, stdout);
  79        putchar(line_termination);
  80
  81        for (i = 0; i < 4; i++) {
  82                topath[i][0] = 0;
  83        }
  84}
  85
  86static int checkout_file(const char *name)
  87{
  88        int namelen = strlen(name);
  89        int pos = cache_name_pos(name, namelen);
  90        int has_same_name = 0;
  91        int did_checkout = 0;
  92        int errs = 0;
  93
  94        if (pos < 0)
  95                pos = -pos - 1;
  96
  97        while (pos < active_nr) {
  98                struct cache_entry *ce = active_cache[pos];
  99                if (ce_namelen(ce) != namelen ||
 100                    memcmp(ce->name, name, namelen))
 101                        break;
 102                has_same_name = 1;
 103                pos++;
 104                if (ce_stage(ce) != checkout_stage
 105                    && (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
 106                        continue;
 107                did_checkout = 1;
 108                if (checkout_entry(ce, &state,
 109                    to_tempfile ? topath[ce_stage(ce)] : NULL) < 0)
 110                        errs++;
 111        }
 112
 113        if (did_checkout) {
 114                if (to_tempfile)
 115                        write_tempfile_record(name);
 116                return errs > 0 ? -1 : 0;
 117        }
 118
 119        if (!state.quiet) {
 120                fprintf(stderr, "git-checkout-index: %s ", name);
 121                if (!has_same_name)
 122                        fprintf(stderr, "is not in the cache");
 123                else if (checkout_stage)
 124                        fprintf(stderr, "does not exist at stage %d",
 125                                checkout_stage);
 126                else
 127                        fprintf(stderr, "is unmerged");
 128                fputc('\n', stderr);
 129        }
 130        return -1;
 131}
 132
 133static int checkout_all(void)
 134{
 135        int i, errs = 0;
 136        struct cache_entry* last_ce = 0;
 137
 138        for (i = 0; i < active_nr ; i++) {
 139                struct cache_entry *ce = active_cache[i];
 140                if (ce_stage(ce) != checkout_stage
 141                    && (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
 142                        continue;
 143                if (prefix && *prefix &&
 144                    (ce_namelen(ce) <= prefix_length ||
 145                     memcmp(prefix, ce->name, prefix_length)))
 146                        continue;
 147                if (last_ce && to_tempfile) {
 148                        if (ce_namelen(last_ce) != ce_namelen(ce)
 149                            || memcmp(last_ce->name, ce->name, ce_namelen(ce)))
 150                                write_tempfile_record(last_ce->name);
 151                }
 152                if (checkout_entry(ce, &state,
 153                    to_tempfile ? topath[ce_stage(ce)] : NULL) < 0)
 154                        errs++;
 155                last_ce = ce;
 156        }
 157        if (last_ce && to_tempfile)
 158                write_tempfile_record(last_ce->name);
 159        if (errs)
 160                /* we have already done our error reporting.
 161                 * exit with the same code as die().
 162                 */
 163                exit(128);
 164        return 0;
 165}
 166
 167static const char checkout_cache_usage[] =
 168"git-checkout-index [-u] [-q] [-a] [-f] [-n] [--stage=[123]|all] [--prefix=<string>] [--temp] [--] <file>...";
 169
 170static struct cache_file cache_file;
 171
 172int main(int argc, char **argv)
 173{
 174        int i;
 175        int newfd = -1;
 176        int all = 0;
 177        int read_from_stdin = 0;
 178
 179        prefix = setup_git_directory();
 180        git_config(git_default_config);
 181        prefix_length = prefix ? strlen(prefix) : 0;
 182
 183        if (read_cache() < 0) {
 184                die("invalid cache");
 185        }
 186
 187        for (i = 1; i < argc; i++) {
 188                const char *arg = argv[i];
 189
 190                if (!strcmp(arg, "--")) {
 191                        i++;
 192                        break;
 193                }
 194                if (!strcmp(arg, "-a") || !strcmp(arg, "--all")) {
 195                        all = 1;
 196                        continue;
 197                }
 198                if (!strcmp(arg, "-f") || !strcmp(arg, "--force")) {
 199                        state.force = 1;
 200                        continue;
 201                }
 202                if (!strcmp(arg, "-q") || !strcmp(arg, "--quiet")) {
 203                        state.quiet = 1;
 204                        continue;
 205                }
 206                if (!strcmp(arg, "-n") || !strcmp(arg, "--no-create")) {
 207                        state.not_new = 1;
 208                        continue;
 209                }
 210                if (!strcmp(arg, "-u") || !strcmp(arg, "--index")) {
 211                        state.refresh_cache = 1;
 212                        if (newfd < 0)
 213                                newfd = hold_index_file_for_update
 214                                        (&cache_file,
 215                                         get_index_file());
 216                        if (newfd < 0)
 217                                die("cannot open index.lock file.");
 218                        continue;
 219                }
 220                if (!strcmp(arg, "-z")) {
 221                        line_termination = 0;
 222                        continue;
 223                }
 224                if (!strcmp(arg, "--stdin")) {
 225                        if (i != argc - 1)
 226                                die("--stdin must be at the end");
 227                        read_from_stdin = 1;
 228                        i++; /* do not consider arg as a file name */
 229                        break;
 230                }
 231                if (!strcmp(arg, "--temp")) {
 232                        to_tempfile = 1;
 233                        continue;
 234                }
 235                if (!strncmp(arg, "--prefix=", 9)) {
 236                        state.base_dir = arg+9;
 237                        state.base_dir_len = strlen(state.base_dir);
 238                        continue;
 239                }
 240                if (!strncmp(arg, "--stage=", 8)) {
 241                        if (!strcmp(arg + 8, "all")) {
 242                                to_tempfile = 1;
 243                                checkout_stage = CHECKOUT_ALL;
 244                        } else {
 245                                int ch = arg[8];
 246                                if ('1' <= ch && ch <= '3')
 247                                        checkout_stage = arg[8] - '0';
 248                                else
 249                                        die("stage should be between 1 and 3 or all");
 250                        }
 251                        continue;
 252                }
 253                if (arg[0] == '-')
 254                        usage(checkout_cache_usage);
 255                break;
 256        }
 257
 258        if (state.base_dir_len || to_tempfile) {
 259                /* when --prefix is specified we do not
 260                 * want to update cache.
 261                 */
 262                if (state.refresh_cache) {
 263                        close(newfd); newfd = -1;
 264                        rollback_index_file(&cache_file);
 265                }
 266                state.refresh_cache = 0;
 267        }
 268
 269        /* Check out named files first */
 270        for ( ; i < argc; i++) {
 271                const char *arg = argv[i];
 272
 273                if (all)
 274                        die("git-checkout-index: don't mix '--all' and explicit filenames");
 275                if (read_from_stdin)
 276                        die("git-checkout-index: don't mix '--stdin' and explicit filenames");
 277                checkout_file(prefix_path(prefix, prefix_length, arg));
 278        }
 279
 280        if (read_from_stdin) {
 281                struct strbuf buf;
 282                if (all)
 283                        die("git-checkout-index: don't mix '--all' and '--stdin'");
 284                strbuf_init(&buf);
 285                while (1) {
 286                        char *path_name;
 287                        read_line(&buf, stdin, line_termination);
 288                        if (buf.eof)
 289                                break;
 290                        if (line_termination && buf.buf[0] == '"')
 291                                path_name = unquote_c_style(buf.buf, NULL);
 292                        else
 293                                path_name = buf.buf;
 294                        checkout_file(prefix_path(prefix, prefix_length, path_name));
 295                        if (path_name != buf.buf)
 296                                free(path_name);
 297                }
 298        }
 299
 300        if (all)
 301                checkout_all();
 302
 303        if (0 <= newfd &&
 304            (write_cache(newfd, active_cache, active_nr) ||
 305             commit_index_file(&cache_file)))
 306                die("Unable to write new cachefile");
 307        return 0;
 308}