Merge branch 'mk/rename'
This commit is contained in:
Junio C Hamano
309
builtin-checkout-index.c
Normal file
309
builtin-checkout-index.c
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@ -0,0 +1,309 @@
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/*
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* Check-out files from the "current cache directory"
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*
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* Copyright (C) 2005 Linus Torvalds
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*
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* Careful: order of argument flags does matter. For example,
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*
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* git-checkout-index -a -f file.c
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*
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* Will first check out all files listed in the cache (but not
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* overwrite any old ones), and then force-checkout "file.c" a
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* second time (ie that one _will_ overwrite any old contents
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* with the same filename).
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*
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* Also, just doing "git-checkout-index" does nothing. You probably
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* meant "git-checkout-index -a". And if you want to force it, you
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* want "git-checkout-index -f -a".
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*
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* Intuitiveness is not the goal here. Repeatability is. The
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* reason for the "no arguments means no work" thing is that
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* from scripts you are supposed to be able to do things like
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*
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* find . -name '*.h' -print0 | xargs -0 git-checkout-index -f --
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*
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* or:
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*
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* find . -name '*.h' -print0 | git-checkout-index -f -z --stdin
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*
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* which will force all existing *.h files to be replaced with
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* their cached copies. If an empty command line implied "all",
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* then this would force-refresh everything in the cache, which
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* was not the point.
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*
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* Oh, and the "--" is just a good idea when you know the rest
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* will be filenames. Just so that you wouldn't have a filename
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* of "-a" causing problems (not possible in the above example,
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* but get used to it in scripting!).
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*/
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#include "cache.h"
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#include "strbuf.h"
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#include "quote.h"
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#include "cache-tree.h"
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#define CHECKOUT_ALL 4
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static int line_termination = '\n';
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static int checkout_stage; /* default to checkout stage0 */
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static int to_tempfile;
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static char topath[4][MAXPATHLEN+1];
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static struct checkout state;
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static void write_tempfile_record(const char *name, int prefix_length)
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{
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int i;
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if (CHECKOUT_ALL == checkout_stage) {
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for (i = 1; i < 4; i++) {
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if (i > 1)
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putchar(' ');
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if (topath[i][0])
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fputs(topath[i], stdout);
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else
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putchar('.');
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}
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} else
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fputs(topath[checkout_stage], stdout);
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putchar('\t');
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write_name_quoted("", 0, name + prefix_length,
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line_termination, stdout);
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putchar(line_termination);
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for (i = 0; i < 4; i++) {
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topath[i][0] = 0;
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}
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}
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static int checkout_file(const char *name, int prefix_length)
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{
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int namelen = strlen(name);
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int pos = cache_name_pos(name, namelen);
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int has_same_name = 0;
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int did_checkout = 0;
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int errs = 0;
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if (pos < 0)
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pos = -pos - 1;
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while (pos < active_nr) {
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struct cache_entry *ce = active_cache[pos];
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if (ce_namelen(ce) != namelen ||
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memcmp(ce->name, name, namelen))
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break;
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has_same_name = 1;
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pos++;
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if (ce_stage(ce) != checkout_stage
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&& (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
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continue;
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did_checkout = 1;
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if (checkout_entry(ce, &state,
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to_tempfile ? topath[ce_stage(ce)] : NULL) < 0)
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errs++;
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}
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if (did_checkout) {
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if (to_tempfile)
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write_tempfile_record(name, prefix_length);
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return errs > 0 ? -1 : 0;
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}
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if (!state.quiet) {
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fprintf(stderr, "git-checkout-index: %s ", name);
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if (!has_same_name)
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fprintf(stderr, "is not in the cache");
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else if (checkout_stage)
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fprintf(stderr, "does not exist at stage %d",
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checkout_stage);
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else
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fprintf(stderr, "is unmerged");
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fputc('\n', stderr);
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}
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return -1;
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}
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static int checkout_all(const char *prefix, int prefix_length)
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{
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int i, errs = 0;
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struct cache_entry* last_ce = NULL;
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for (i = 0; i < active_nr ; i++) {
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struct cache_entry *ce = active_cache[i];
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if (ce_stage(ce) != checkout_stage
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&& (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
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continue;
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if (prefix && *prefix &&
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(ce_namelen(ce) <= prefix_length ||
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memcmp(prefix, ce->name, prefix_length)))
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continue;
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if (last_ce && to_tempfile) {
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if (ce_namelen(last_ce) != ce_namelen(ce)
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|| memcmp(last_ce->name, ce->name, ce_namelen(ce)))
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write_tempfile_record(last_ce->name, prefix_length);
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}
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if (checkout_entry(ce, &state,
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to_tempfile ? topath[ce_stage(ce)] : NULL) < 0)
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errs++;
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last_ce = ce;
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}
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if (last_ce && to_tempfile)
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write_tempfile_record(last_ce->name, prefix_length);
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if (errs)
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/* we have already done our error reporting.
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* exit with the same code as die().
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*/
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exit(128);
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return 0;
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}
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static const char checkout_cache_usage[] =
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"git-checkout-index [-u] [-q] [-a] [-f] [-n] [--stage=[123]|all] [--prefix=<string>] [--temp] [--] <file>...";
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static struct lock_file lock_file;
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int cmd_checkout_index(int argc, const char **argv, const char *prefix)
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{
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int i;
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int newfd = -1;
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int all = 0;
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int read_from_stdin = 0;
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int prefix_length;
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git_config(git_default_config);
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state.base_dir = "";
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prefix_length = prefix ? strlen(prefix) : 0;
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if (read_cache() < 0) {
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die("invalid cache");
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}
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for (i = 1; i < argc; i++) {
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const char *arg = argv[i];
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if (!strcmp(arg, "--")) {
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i++;
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break;
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}
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if (!strcmp(arg, "-a") || !strcmp(arg, "--all")) {
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all = 1;
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continue;
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}
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if (!strcmp(arg, "-f") || !strcmp(arg, "--force")) {
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state.force = 1;
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continue;
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}
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if (!strcmp(arg, "-q") || !strcmp(arg, "--quiet")) {
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state.quiet = 1;
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continue;
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}
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if (!strcmp(arg, "-n") || !strcmp(arg, "--no-create")) {
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state.not_new = 1;
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continue;
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}
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if (!strcmp(arg, "-u") || !strcmp(arg, "--index")) {
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state.refresh_cache = 1;
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if (newfd < 0)
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newfd = hold_lock_file_for_update
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(&lock_file, get_index_file(), 1);
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if (newfd < 0)
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die("cannot open index.lock file.");
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continue;
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}
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if (!strcmp(arg, "-z")) {
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line_termination = 0;
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continue;
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}
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if (!strcmp(arg, "--stdin")) {
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if (i != argc - 1)
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die("--stdin must be at the end");
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read_from_stdin = 1;
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i++; /* do not consider arg as a file name */
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break;
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}
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if (!strcmp(arg, "--temp")) {
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to_tempfile = 1;
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continue;
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}
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if (!strncmp(arg, "--prefix=", 9)) {
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state.base_dir = arg+9;
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state.base_dir_len = strlen(state.base_dir);
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continue;
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}
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if (!strncmp(arg, "--stage=", 8)) {
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if (!strcmp(arg + 8, "all")) {
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to_tempfile = 1;
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checkout_stage = CHECKOUT_ALL;
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} else {
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int ch = arg[8];
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if ('1' <= ch && ch <= '3')
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checkout_stage = arg[8] - '0';
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else
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die("stage should be between 1 and 3 or all");
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}
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continue;
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}
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if (arg[0] == '-')
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usage(checkout_cache_usage);
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break;
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}
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if (state.base_dir_len || to_tempfile) {
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/* when --prefix is specified we do not
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* want to update cache.
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*/
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if (state.refresh_cache) {
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close(newfd); newfd = -1;
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rollback_lock_file(&lock_file);
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}
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state.refresh_cache = 0;
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}
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/* Check out named files first */
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for ( ; i < argc; i++) {
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const char *arg = argv[i];
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const char *p;
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if (all)
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die("git-checkout-index: don't mix '--all' and explicit filenames");
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if (read_from_stdin)
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die("git-checkout-index: don't mix '--stdin' and explicit filenames");
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p = prefix_path(prefix, prefix_length, arg);
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checkout_file(p, prefix_length);
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if (p < arg || p > arg + strlen(arg))
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free((char*)p);
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}
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if (read_from_stdin) {
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struct strbuf buf;
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if (all)
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die("git-checkout-index: don't mix '--all' and '--stdin'");
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strbuf_init(&buf);
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while (1) {
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char *path_name;
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const char *p;
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read_line(&buf, stdin, line_termination);
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if (buf.eof)
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break;
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if (line_termination && buf.buf[0] == '"')
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path_name = unquote_c_style(buf.buf, NULL);
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else
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path_name = buf.buf;
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p = prefix_path(prefix, prefix_length, path_name);
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checkout_file(p, prefix_length);
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if (p < path_name || p > path_name + strlen(path_name))
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free((char *)p);
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if (path_name != buf.buf)
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free(path_name);
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}
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}
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if (all)
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checkout_all(prefix, prefix_length);
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if (0 <= newfd &&
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(write_cache(newfd, active_cache, active_nr) ||
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close(newfd) || commit_lock_file(&lock_file)))
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die("Unable to write new index file");
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return 0;
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}
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