builtin/checkout-index.c

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
write_tempfile_record
checkout_file
checkout_all
option_parse_u
option_parse_z
option_parse_prefix
option_parse_stage
cmd_checkout_index
/*
 * Check-out files from the "current cache directory"
 *
 * Copyright (C) 2005 Linus Torvalds
 *
 */
#include "builtin.h"
#include "lockfile.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][TEMPORARY_FILENAME_LENGTH + 1];

static struct checkout state;

static void write_tempfile_record(const char *name, const char *prefix)
{
        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_relative(name, prefix, stdout, line_termination);

        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 = 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);
                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);
                }
                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);
        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[] = {
        N_("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;
        state.istate = &the_index;
        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_BOOL('a', "all", &all,
                        N_("check out all files in the index")),
                OPT__FORCE(&force, N_("force overwrite of existing files")),
                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")),
                { OPTION_CALLBACK, 'u', "index", &newfd, NULL,
                        N_("update stat information in the index file"),
                        PARSE_OPT_NOARG, option_parse_u },
                { OPTION_CALLBACK, 'z', NULL, NULL, NULL,
                        N_("paths are separated with NUL character"),
                        PARSE_OPT_NOARG, option_parse_z },
                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_CALLBACK(0, "prefix", NULL, N_("string"),
                        N_("when creating files, prepend <string>"),
                        option_parse_prefix),
                OPT_CALLBACK(0, "stage", NULL, NULL,
                        N_("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];
                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);
                free(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) {
                        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);
                        free(p);
                }
                strbuf_release(&nbuf);
                strbuf_release(&buf);
        }

        if (all)
                checkout_all(prefix, prefix_length);

        if (0 <= newfd &&
            write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
                die("Unable to write new index file");
        return 0;
}
/* [<][>][^][v][top][bottom][index][help] */
root/builtin/checkout-index.c

DEFINITIONS
