/*
 * Copyright (C) the libgit2 contributors. All rights reserved.
 *
 * This file is part of libgit2, distributed under the GNU GPL v2 with
 * a Linking Exception. For full terms see the included COPYING file.
 */
#include "common.h"
#include "fileops.h"
#include "repository.h"
#include "config.h"
#include "git2/config.h"
#include "vector.h"
#include "filter.h"
struct map_data {
        const char *cvar_name;
        git_cvar_map *maps;
        size_t map_count;
        int default_value;
};
/*
 *      core.eol
 *              Sets the line ending type to use in the working directory for
 *      files that have the text property set. Alternatives are lf, crlf
 *      and native, which uses the platform's native line ending. The default
 *      value is native. See gitattributes(5) for more information on
 *      end-of-line conversion.
 */
static git_cvar_map _cvar_map_eol[] = {
        {GIT_CVAR_FALSE, NULL, GIT_EOL_UNSET},
        {GIT_CVAR_STRING, "lf", GIT_EOL_LF},
        {GIT_CVAR_STRING, "crlf", GIT_EOL_CRLF},
        {GIT_CVAR_STRING, "native", GIT_EOL_NATIVE}
};
/*
 *      core.autocrlf
 *              Setting this variable to "true" is almost the same as setting
 *      the text attribute to "auto" on all files except that text files are
 *      not guaranteed to be normalized: files that contain CRLF in the
 *      repository will not be touched. Use this setting if you want to have
 *      CRLF line endings in your working directory even though the repository
 *      does not have normalized line endings. This variable can be set to input,
 *      in which case no output conversion is performed.
 */
static git_cvar_map _cvar_map_autocrlf[] = {
        {GIT_CVAR_FALSE, NULL, GIT_AUTO_CRLF_FALSE},
        {GIT_CVAR_TRUE, NULL, GIT_AUTO_CRLF_TRUE},
        {GIT_CVAR_STRING, "input", GIT_AUTO_CRLF_INPUT}
};
static git_cvar_map _cvar_map_safecrlf[] = {
        {GIT_CVAR_FALSE, NULL, GIT_SAFE_CRLF_FALSE},
        {GIT_CVAR_TRUE, NULL, GIT_SAFE_CRLF_FAIL},
        {GIT_CVAR_STRING, "warn", GIT_SAFE_CRLF_WARN}
};
/*
 * Generic map for integer values
 */
static git_cvar_map _cvar_map_int[] = {
        {GIT_CVAR_INT32, NULL, 0},
};
static struct map_data _cvar_maps[] = {
        {"core.autocrlf", _cvar_map_autocrlf, ARRAY_SIZE(_cvar_map_autocrlf), GIT_AUTO_CRLF_DEFAULT},
        {"core.eol", _cvar_map_eol, ARRAY_SIZE(_cvar_map_eol), GIT_EOL_DEFAULT},
        {"core.symlinks", NULL, 0, GIT_SYMLINKS_DEFAULT },
        {"core.ignorecase", NULL, 0, GIT_IGNORECASE_DEFAULT },
        {"core.filemode", NULL, 0, GIT_FILEMODE_DEFAULT },
        {"core.ignorestat", NULL, 0, GIT_IGNORESTAT_DEFAULT },
        {"core.trustctime", NULL, 0, GIT_TRUSTCTIME_DEFAULT },
        {"core.abbrev", _cvar_map_int, 1, GIT_ABBREV_DEFAULT },
        {"core.precomposeunicode", NULL, 0, GIT_PRECOMPOSE_DEFAULT },
        {"core.safecrlf", _cvar_map_safecrlf, ARRAY_SIZE(_cvar_map_safecrlf), GIT_SAFE_CRLF_DEFAULT},
        {"core.logallrefupdates", NULL, 0, GIT_LOGALLREFUPDATES_DEFAULT },
        {"core.protecthfs", NULL, 0, GIT_PROTECTHFS_DEFAULT },
        {"core.protectntfs", NULL, 0, GIT_PROTECTNTFS_DEFAULT },
};
int git_config__cvar(int *out, git_config *config, git_cvar_cached cvar)
{
        int error = 0;
        struct map_data *data = &_cvar_maps[(int)cvar];
        git_config_entry *entry;
        git_config__lookup_entry(&entry, config, data->cvar_name, false);
        if (!entry)
                *out = data->default_value;
        else if (data->maps)
                error = git_config_lookup_map_value(
                        out, data->maps, data->map_count, entry->value);
        else
                error = git_config_parse_bool(out, entry->value);
        git_config_entry_free(entry);
        return error;
}
int git_repository__cvar(int *out, git_repository *repo, git_cvar_cached cvar)
{
        *out = repo->cvar_cache[(int)cvar];
        if (*out == GIT_CVAR_NOT_CACHED) {
                int error;
                git_config *config;
                if ((error = git_repository_config__weakptr(&config, repo)) < 0 ||
                        (error = git_config__cvar(out, config, cvar)) < 0)
                        return error;
                repo->cvar_cache[(int)cvar] = *out;
        }
        return 0;
}
void git_repository__cvar_cache_clear(git_repository *repo)
{
        int i;
        for (i = 0; i < GIT_CVAR_CACHE_MAX; ++i)
                repo->cvar_cache[i] = GIT_CVAR_NOT_CACHED;
}