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-rw-r--r--builtin/checkout-index.c334
1 files changed, 334 insertions, 0 deletions
diff --git a/builtin/checkout-index.c b/builtin/checkout-index.c
new file mode 100644
index 0000000..cf6fba9
--- /dev/null
+++ b/builtin/checkout-index.c
@@ -0,0 +1,334 @@
+/*
+ * Check-out files from the "current cache directory"
+ *
+ * Copyright (C) 2005 Linus Torvalds
+ *
+ */
+#define USE_THE_INDEX_VARIABLE
+#include "builtin.h"
+#include "config.h"
+#include "dir.h"
+#include "lockfile.h"
+#include "quote.h"
+#include "cache-tree.h"
+#include "parse-options.h"
+#include "entry.h"
+#include "parallel-checkout.h"
+
+#define CHECKOUT_ALL 4
+static int nul_term_line;
+static int checkout_stage; /* default to checkout stage0 */
+static int ignore_skip_worktree; /* default to 0 */
+static int to_tempfile;
+static char topath[4][TEMPORARY_FILENAME_LENGTH + 1];
+
+static struct checkout state = CHECKOUT_INIT;
+
+static void write_tempfile_record(const char *name, const char *prefix)
+{
+ int i;
+ int have_tempname = 0;
+
+ if (CHECKOUT_ALL == checkout_stage) {
+ for (i = 1; i < 4; i++)
+ if (topath[i][0]) {
+ have_tempname = 1;
+ break;
+ }
+
+ if (have_tempname) {
+ for (i = 1; i < 4; i++) {
+ if (i > 1)
+ putchar(' ');
+ if (topath[i][0])
+ fputs(topath[i], stdout);
+ else
+ putchar('.');
+ }
+ }
+ } else if (topath[checkout_stage][0]) {
+ have_tempname = 1;
+ fputs(topath[checkout_stage], stdout);
+ }
+
+ if (have_tempname) {
+ putchar('\t');
+ write_name_quoted_relative(name, prefix, stdout,
+ nul_term_line ? '\0' : '\n');
+ }
+
+ for (i = 0; i < 4; i++) {
+ topath[i][0] = 0;
+ }
+}
+
+static int checkout_file(const char *name, const char *prefix)
+{
+ int namelen = strlen(name);
+ int pos = index_name_pos(&the_index, name, namelen);
+ int has_same_name = 0;
+ int is_file = 0;
+ int is_skipped = 1;
+ int did_checkout = 0;
+ int errs = 0;
+
+ if (pos < 0)
+ pos = -pos - 1;
+
+ while (pos < the_index.cache_nr) {
+ struct cache_entry *ce = the_index.cache[pos];
+ if (ce_namelen(ce) != namelen ||
+ memcmp(ce->name, name, namelen))
+ break;
+ has_same_name = 1;
+ pos++;
+ if (S_ISSPARSEDIR(ce->ce_mode))
+ break;
+ is_file = 1;
+ if (!ignore_skip_worktree && ce_skip_worktree(ce))
+ break;
+ is_skipped = 0;
+ if (ce_stage(ce) != checkout_stage
+ && (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
+ continue;
+ did_checkout = 1;
+ if (checkout_entry(ce, &state,
+ to_tempfile ? topath[ce_stage(ce)] : NULL,
+ NULL) < 0)
+ errs++;
+ }
+
+ if (did_checkout) {
+ if (to_tempfile)
+ write_tempfile_record(name, prefix);
+ return errs > 0 ? -1 : 0;
+ }
+
+ /*
+ * At this point we know we didn't try to check anything out. If it was
+ * because we did find an entry but it was stage 0, that's not an
+ * error.
+ */
+ if (has_same_name && checkout_stage == CHECKOUT_ALL)
+ return 0;
+
+ if (!state.quiet) {
+ fprintf(stderr, "git checkout-index: %s ", name);
+ if (!has_same_name)
+ fprintf(stderr, "is not in the cache");
+ else if (!is_file)
+ fprintf(stderr, "is a sparse directory");
+ else if (is_skipped)
+ fprintf(stderr, "has skip-worktree enabled; "
+ "use '--ignore-skip-worktree-bits' to checkout");
+ else if (checkout_stage)
+ fprintf(stderr, "does not exist at stage %d",
+ checkout_stage);
+ else
+ fprintf(stderr, "is unmerged");
+ fputc('\n', stderr);
+ }
+ return -1;
+}
+
+static int checkout_all(const char *prefix, int prefix_length)
+{
+ int i, errs = 0;
+ struct cache_entry *last_ce = NULL;
+
+ for (i = 0; i < the_index.cache_nr ; i++) {
+ struct cache_entry *ce = the_index.cache[i];
+
+ if (S_ISSPARSEDIR(ce->ce_mode)) {
+ if (!ce_skip_worktree(ce))
+ BUG("sparse directory '%s' does not have skip-worktree set", ce->name);
+
+ /*
+ * If the current entry is a sparse directory and skip-worktree
+ * entries are being checked out, expand the index and continue
+ * the loop on the current index position (now pointing to the
+ * first entry inside the expanded sparse directory).
+ */
+ if (ignore_skip_worktree) {
+ ensure_full_index(&the_index);
+ ce = the_index.cache[i];
+ }
+ }
+
+ if (!ignore_skip_worktree && ce_skip_worktree(ce))
+ continue;
+ if (ce_stage(ce) != checkout_stage
+ && (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
+ continue;
+ if (prefix && *prefix &&
+ (ce_namelen(ce) <= prefix_length ||
+ memcmp(prefix, ce->name, prefix_length)))
+ continue;
+ if (last_ce && to_tempfile) {
+ if (ce_namelen(last_ce) != ce_namelen(ce)
+ || memcmp(last_ce->name, ce->name, ce_namelen(ce)))
+ write_tempfile_record(last_ce->name, prefix);
+ }
+ if (checkout_entry(ce, &state,
+ to_tempfile ? topath[ce_stage(ce)] : NULL,
+ NULL) < 0)
+ errs++;
+ last_ce = ce;
+ }
+ if (last_ce && to_tempfile)
+ write_tempfile_record(last_ce->name, prefix);
+ return !!errs;
+}
+
+static const char * const builtin_checkout_index_usage[] = {
+ N_("git checkout-index [<options>] [--] [<file>...]"),
+ NULL
+};
+
+static int option_parse_stage(const struct option *opt,
+ const char *arg, int unset)
+{
+ BUG_ON_OPT_NEG(unset);
+
+ if (!strcmp(arg, "all")) {
+ to_tempfile = 1;
+ checkout_stage = CHECKOUT_ALL;
+ } else {
+ int ch = arg[0];
+ if ('1' <= ch && ch <= '3')
+ checkout_stage = arg[0] - '0';
+ else
+ die(_("stage should be between 1 and 3 or all"));
+ }
+ return 0;
+}
+
+int cmd_checkout_index(int argc, const char **argv, const char *prefix)
+{
+ int i;
+ struct lock_file lock_file = LOCK_INIT;
+ int all = 0;
+ int read_from_stdin = 0;
+ int prefix_length;
+ int force = 0, quiet = 0, not_new = 0;
+ int index_opt = 0;
+ int err = 0;
+ int pc_workers, pc_threshold;
+ struct option builtin_checkout_index_options[] = {
+ OPT_BOOL('a', "all", &all,
+ N_("check out all files in the index")),
+ OPT_BOOL(0, "ignore-skip-worktree-bits", &ignore_skip_worktree,
+ N_("do not skip files with skip-worktree set")),
+ OPT__FORCE(&force, N_("force overwrite of existing files"), 0),
+ OPT__QUIET(&quiet,
+ N_("no warning for existing files and files not in index")),
+ OPT_BOOL('n', "no-create", &not_new,
+ N_("don't checkout new files")),
+ OPT_BOOL('u', "index", &index_opt,
+ N_("update stat information in the index file")),
+ OPT_BOOL('z', NULL, &nul_term_line,
+ N_("paths are separated with NUL character")),
+ OPT_BOOL(0, "stdin", &read_from_stdin,
+ N_("read list of paths from the standard input")),
+ OPT_BOOL(0, "temp", &to_tempfile,
+ N_("write the content to temporary files")),
+ OPT_STRING(0, "prefix", &state.base_dir, N_("string"),
+ N_("when creating files, prepend <string>")),
+ OPT_CALLBACK_F(0, "stage", NULL, "(1|2|3|all)",
+ N_("copy out the files from named stage"),
+ PARSE_OPT_NONEG, option_parse_stage),
+ OPT_END()
+ };
+
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage_with_options(builtin_checkout_index_usage,
+ builtin_checkout_index_options);
+ git_config(git_default_config, NULL);
+ prefix_length = prefix ? strlen(prefix) : 0;
+
+ prepare_repo_settings(the_repository);
+ the_repository->settings.command_requires_full_index = 0;
+
+ if (repo_read_index(the_repository) < 0) {
+ die("invalid cache");
+ }
+
+ argc = parse_options(argc, argv, prefix, builtin_checkout_index_options,
+ builtin_checkout_index_usage, 0);
+ state.istate = &the_index;
+ state.force = force;
+ state.quiet = quiet;
+ state.not_new = not_new;
+
+ if (!state.base_dir)
+ state.base_dir = "";
+ state.base_dir_len = strlen(state.base_dir);
+
+ /*
+ * when --prefix is specified we do not want to update cache.
+ */
+ if (index_opt && !state.base_dir_len && !to_tempfile) {
+ state.refresh_cache = 1;
+ state.istate = &the_index;
+ repo_hold_locked_index(the_repository, &lock_file,
+ LOCK_DIE_ON_ERROR);
+ }
+
+ get_parallel_checkout_configs(&pc_workers, &pc_threshold);
+ if (pc_workers > 1)
+ init_parallel_checkout();
+
+ /* Check out named files first */
+ for (i = 0; i < argc; i++) {
+ const char *arg = argv[i];
+ char *p;
+
+ if (all)
+ die("git checkout-index: don't mix '--all' and explicit filenames");
+ if (read_from_stdin)
+ die("git checkout-index: don't mix '--stdin' and explicit filenames");
+ p = prefix_path(prefix, prefix_length, arg);
+ err |= checkout_file(p, prefix);
+ free(p);
+ }
+
+ if (read_from_stdin) {
+ struct strbuf buf = STRBUF_INIT;
+ struct strbuf unquoted = STRBUF_INIT;
+ strbuf_getline_fn getline_fn;
+
+ if (all)
+ die("git checkout-index: don't mix '--all' and '--stdin'");
+
+ getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf;
+ while (getline_fn(&buf, stdin) != EOF) {
+ char *p;
+ if (!nul_term_line && buf.buf[0] == '"') {
+ strbuf_reset(&unquoted);
+ if (unquote_c_style(&unquoted, buf.buf, NULL))
+ die("line is badly quoted");
+ strbuf_swap(&buf, &unquoted);
+ }
+ p = prefix_path(prefix, prefix_length, buf.buf);
+ err |= checkout_file(p, prefix);
+ free(p);
+ }
+ strbuf_release(&unquoted);
+ strbuf_release(&buf);
+ }
+
+ if (all)
+ err |= checkout_all(prefix, prefix_length);
+
+ if (pc_workers > 1)
+ err |= run_parallel_checkout(&state, pc_workers, pc_threshold,
+ NULL, NULL);
+
+ if (err)
+ return 1;
+
+ if (is_lock_file_locked(&lock_file) &&
+ write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
+ die("Unable to write new index file");
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-08 21:00:15 +0000