diff options
Diffstat (limited to 'builtin/checkout-index.c')
| -rw-r--r-- | builtin/checkout-index.c | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/builtin/checkout-index.c b/builtin/checkout-index.c new file mode 100644 index 0000000000..c16d82b7de --- /dev/null +++ b/builtin/checkout-index.c @@ -0,0 +1,286 @@ +/* + * Check-out files from the "current cache directory" + * + * Copyright (C) 2005 Linus Torvalds + * + */ +#include "builtin.h" +#include "cache.h" +#include "quote.h" +#include "cache-tree.h" +#include "parse-options.h" + +#define CHECKOUT_ALL 4 +static int line_termination = '\n'; +static int checkout_stage; /* default to checkout stage0 */ +static int to_tempfile; +static char topath[4][PATH_MAX + 1]; + +static struct checkout state; + +static void write_tempfile_record(const char *name, int prefix_length) +{ + int i; + + if (CHECKOUT_ALL == checkout_stage) { + for (i = 1; i < 4; i++) { + if (i > 1) + putchar(' '); + if (topath[i][0]) + fputs(topath[i], stdout); + else + putchar('.'); + } + } else + fputs(topath[checkout_stage], stdout); + + putchar('\t'); + write_name_quoted(name + prefix_length, stdout, line_termination); + + for (i = 0; i < 4; i++) { + topath[i][0] = 0; + } +} + +static int checkout_file(const char *name, int prefix_length) +{ + int namelen = strlen(name); + int pos = cache_name_pos(name, namelen); + int has_same_name = 0; + int did_checkout = 0; + int errs = 0; + + if (pos < 0) + pos = -pos - 1; + + while (pos < active_nr) { + struct cache_entry *ce = active_cache[pos]; + if (ce_namelen(ce) != namelen || + memcmp(ce->name, name, namelen)) + break; + has_same_name = 1; + pos++; + 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) < 0) + errs++; + } + + if (did_checkout) { + if (to_tempfile) + write_tempfile_record(name, prefix_length); + return errs > 0 ? -1 : 0; + } + + if (!state.quiet) { + fprintf(stderr, "git checkout-index: %s ", name); + if (!has_same_name) + fprintf(stderr, "is not in the cache"); + 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 void checkout_all(const char *prefix, int prefix_length) +{ + int i, errs = 0; + struct cache_entry *last_ce = NULL; + + for (i = 0; i < active_nr ; i++) { + struct cache_entry *ce = active_cache[i]; + 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_length); + } + if (checkout_entry(ce, &state, + to_tempfile ? topath[ce_stage(ce)] : NULL) < 0) + errs++; + last_ce = ce; + } + if (last_ce && to_tempfile) + write_tempfile_record(last_ce->name, prefix_length); + if (errs) + /* we have already done our error reporting. + * exit with the same code as die(). + */ + exit(128); +} + +static const char * const builtin_checkout_index_usage[] = { + "git checkout-index [options] [--] [<file>...]", + NULL +}; + +static struct lock_file lock_file; + +static int option_parse_u(const struct option *opt, + const char *arg, int unset) +{ + int *newfd = opt->value; + + state.refresh_cache = 1; + if (*newfd < 0) + *newfd = hold_locked_index(&lock_file, 1); + return 0; +} + +static int option_parse_z(const struct option *opt, + const char *arg, int unset) +{ + if (unset) + line_termination = '\n'; + else + line_termination = 0; + return 0; +} + +static int option_parse_prefix(const struct option *opt, + const char *arg, int unset) +{ + state.base_dir = arg; + state.base_dir_len = strlen(arg); + return 0; +} + +static int option_parse_stage(const struct option *opt, + const char *arg, int 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; + int newfd = -1; + int all = 0; + int read_from_stdin = 0; + int prefix_length; + int force = 0, quiet = 0, not_new = 0; + struct option builtin_checkout_index_options[] = { + OPT_BOOLEAN('a', "all", &all, + "checks out all files in the index"), + OPT__FORCE(&force, "forces overwrite of existing files"), + OPT__QUIET(&quiet, + "no warning for existing files and files not in index"), + OPT_BOOLEAN('n', "no-create", ¬_new, + "don't checkout new files"), + { OPTION_CALLBACK, 'u', "index", &newfd, NULL, + "update stat information in the index file", + PARSE_OPT_NOARG, option_parse_u }, + { OPTION_CALLBACK, 'z', NULL, NULL, NULL, + "paths are separated with NUL character", + PARSE_OPT_NOARG, option_parse_z }, + OPT_BOOLEAN(0, "stdin", &read_from_stdin, + "read list of paths from the standard input"), + OPT_BOOLEAN(0, "temp", &to_tempfile, + "write the content to temporary files"), + OPT_CALLBACK(0, "prefix", NULL, "string", + "when creating files, prepend <string>", + option_parse_prefix), + OPT_CALLBACK(0, "stage", NULL, NULL, + "copy out the files from named stage", + 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); + state.base_dir = ""; + prefix_length = prefix ? strlen(prefix) : 0; + + if (read_cache() < 0) { + die("invalid cache"); + } + + argc = parse_options(argc, argv, prefix, builtin_checkout_index_options, + builtin_checkout_index_usage, 0); + state.force = force; + state.quiet = quiet; + state.not_new = not_new; + + if (state.base_dir_len || to_tempfile) { + /* when --prefix is specified we do not + * want to update cache. + */ + if (state.refresh_cache) { + rollback_lock_file(&lock_file); + newfd = -1; + } + state.refresh_cache = 0; + } + + /* Check out named files first */ + for (i = 0; i < argc; i++) { + const char *arg = argv[i]; + const 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); + checkout_file(p, prefix_length); + if (p < arg || p > arg + strlen(arg)) + free((char *)p); + } + + if (read_from_stdin) { + struct strbuf buf = STRBUF_INIT, nbuf = STRBUF_INIT; + + if (all) + die("git checkout-index: don't mix '--all' and '--stdin'"); + + while (strbuf_getline(&buf, stdin, line_termination) != EOF) { + const char *p; + if (line_termination && buf.buf[0] == '"') { + strbuf_reset(&nbuf); + if (unquote_c_style(&nbuf, buf.buf, NULL)) + die("line is badly quoted"); + strbuf_swap(&buf, &nbuf); + } + p = prefix_path(prefix, prefix_length, buf.buf); + checkout_file(p, prefix_length); + if (p < buf.buf || p > buf.buf + buf.len) + free((char *)p); + } + strbuf_release(&nbuf); + strbuf_release(&buf); + } + + if (all) + checkout_all(prefix, prefix_length); + + if (0 <= newfd && + (write_cache(newfd, active_cache, active_nr) || + commit_locked_index(&lock_file))) + die("Unable to write new index file"); + return 0; +} |