project_files/frontlib/model/cfg.c
author Medo <smaxein@googlemail.com>
Wed, 27 Jun 2012 22:52:19 +0200
changeset 7314 6171f0bad318
parent 7275 15f722e0b96f
child 7316 f7b49b2c5d84
permissions -rw-r--r--
frontlib: Fixes and improvements. Added a GPLv2+ license header to all frontlib files that did not have their license fixed already.
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/*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (C) 2012 Simeon Maxein <smaxein@googlemail.com>
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2
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 * of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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 */
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#include "cfg.h"
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#include "../util/inihelper.h"
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#include "../util/logging.h"
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#include "../util/util.h"
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#include "../util/refcounter.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <string.h>
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static void flib_cfg_meta_destroy(flib_cfg_meta *cfg) {
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	if(cfg) {
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		if(cfg->settings) {
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			for(int i=0; i<cfg->settingCount; i++) {
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				free(cfg->settings[i].name);
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				free(cfg->settings[i].engineCommand);
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			}
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			free(cfg->settings);
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		}
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		if(cfg->mods) {
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			for(int i=0; i<cfg->modCount; i++) {
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				free(cfg->mods[i].name);
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			}
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			free(cfg->mods);
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		}
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		free(cfg);
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	}
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}
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static void flib_cfg_destroy(flib_cfg* cfg) {
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	if(cfg) {
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		flib_cfg_meta_release(cfg->meta);
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		free(cfg->mods);
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		free(cfg->settings);
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		free(cfg->name);
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		free(cfg);
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	}
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}
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static flib_cfg_meta *flib_cfg_meta_from_ini_handleError(flib_cfg_meta *result, flib_ini *ini) {
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	flib_cfg_meta_destroy(result);
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	flib_ini_destroy(ini);
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	return NULL;
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}
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static int readMetaSettingSections(flib_ini *ini, flib_cfg_meta *result, int limit) {
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	while(result->settingCount<limit) {
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		char sectionName[32];
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		if(snprintf(sectionName, sizeof(sectionName), "setting%i", result->settingCount) <= 0) {
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			return -1;
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		}
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		if(!flib_ini_enter_section(ini, sectionName)) {
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			flib_cfg_setting_meta *metasetting = &result->settings[result->settingCount];
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			result->settingCount++;
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			bool error = false;
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			error |= flib_ini_get_str(ini, &metasetting->name, "name");
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			error |= flib_ini_get_str_opt(ini, &metasetting->engineCommand, "command", NULL);
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			error |= flib_ini_get_bool(ini, &metasetting->times1000, "times1000");
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			error |= flib_ini_get_bool(ini, &metasetting->maxMeansInfinity, "maxmeansinfinity");
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			error |= flib_ini_get_int(ini, &metasetting->min, "min");
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			error |= flib_ini_get_int(ini, &metasetting->max, "max");
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			error |= flib_ini_get_int(ini, &metasetting->def, "default");
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			if(error) {
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				flib_log_e("Missing or malformed ini parameter in metaconfig, section %s", sectionName);
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				return -1;
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			}
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		} else {
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			return 0;
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		}
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	}
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	return 0;
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}
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static int readMetaModSections(flib_ini *ini, flib_cfg_meta *result, int limit) {
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	while(result->modCount<limit) {
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		char sectionName[32];
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		if(snprintf(sectionName, sizeof(sectionName), "mod%i", result->modCount) <= 0) {
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			return -1;
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		}
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		if(!flib_ini_enter_section(ini, sectionName)) {
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			flib_cfg_mod_meta *metamod = &result->mods[result->modCount];
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			result->modCount++;
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			bool error = false;
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			error |= flib_ini_get_str(ini, &metamod->name, "name");
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			error |= flib_ini_get_int(ini, &metamod->bitmaskIndex, "bitmaskIndex");
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			if(error) {
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				flib_log_e("Missing or malformed ini parameter in metaconfig, section %s", sectionName);
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				return -1;
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			}
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		} else {
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			return 0;
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		}
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	}
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	return 0;
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}
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flib_cfg_meta *flib_cfg_meta_from_ini(const char *filename) {
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	if(!filename) {
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		flib_log_e("null parameter in flib_cfg_meta_from_ini");
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		return NULL;
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	}
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	flib_cfg_meta *result = flib_cfg_meta_retain(flib_calloc(1, sizeof(flib_cfg_meta)));
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	flib_ini *ini = flib_ini_load(filename);
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	if(!result || !ini) {
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		return flib_cfg_meta_from_ini_handleError(result, ini);
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	}
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	// We're overallocating here for simplicity
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	int sectionCount = flib_ini_get_sectioncount(ini);
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	result->settingCount = 0;
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	result->modCount = 0;
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	result->settings = flib_calloc(sectionCount, sizeof(flib_cfg_setting_meta));
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	result->mods = flib_calloc(sectionCount, sizeof(flib_cfg_mod_meta));
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	if(!result->settings || !result->mods) {
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		return flib_cfg_meta_from_ini_handleError(result, ini);
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	}
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	if(readMetaSettingSections(ini, result, sectionCount) || readMetaModSections(ini, result, sectionCount)) {
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		return flib_cfg_meta_from_ini_handleError(result, ini);
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	}
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	if(result->settingCount+result->modCount != sectionCount) {
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		flib_log_e("Unknown or non-contiguous sections headers in metaconfig.");
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		return flib_cfg_meta_from_ini_handleError(result, ini);
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	}
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	flib_ini_destroy(ini);
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	return result;
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}
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flib_cfg_meta *flib_cfg_meta_retain(flib_cfg_meta *metainfo) {
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	if(metainfo) {
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		flib_retain(&metainfo->_referenceCount, "flib_cfg_meta");
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	}
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	return metainfo;
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}
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void flib_cfg_meta_release(flib_cfg_meta *cfg) {
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	if(cfg && flib_release(&cfg->_referenceCount, "flib_cfg_meta")) {
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		flib_cfg_meta_destroy(cfg);
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	}
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}
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flib_cfg *flib_cfg_create(flib_cfg_meta *meta, const char *schemeName) {
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	flib_cfg *result = flib_cfg_retain(flib_calloc(1, sizeof(flib_cfg)));
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	if(!meta || !result || !schemeName) {
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		flib_log_e("null parameter in flib_cfg_create");
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		return NULL;
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	}
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	result->meta = flib_cfg_meta_retain(meta);
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	result->name = flib_strdupnull(schemeName);
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	result->mods = flib_calloc(meta->modCount, sizeof(*result->mods));
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	result->settings = flib_calloc(meta->settingCount, sizeof(*result->settings));
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	if(!result->mods || !result->settings || !result->name) {
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		flib_cfg_destroy(result);
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		return NULL;
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	}
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	for(int i=0; i<meta->settingCount; i++) {
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		result->settings[i] = meta->settings[i].def;
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	}
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	return result;
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}
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flib_cfg *flib_cfg_copy(const flib_cfg *cfg) {
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	flib_cfg *result = NULL;
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	if(cfg) {
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		result = flib_cfg_create(cfg->meta, cfg->name);
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		if(result) {
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			memcpy(result->mods, cfg->mods, cfg->meta->modCount * sizeof(*cfg->mods));
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			memcpy(result->settings, cfg->settings, cfg->meta->settingCount * sizeof(*cfg->settings));
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		}
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	}
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	return result;
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}
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flib_cfg *flib_cfg_retain(flib_cfg *cfg) {
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	if(cfg) {
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		flib_retain(&cfg->_referenceCount, "flib_cfg");
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	}
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	return cfg;
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}
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void flib_cfg_release(flib_cfg *cfg) {
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	if(cfg && flib_release(&cfg->_referenceCount, "flib_cfg")) {
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		flib_cfg_destroy(cfg);
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	}
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}
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bool flib_cfg_get_mod(flib_cfg *cfg, const char *name) {
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	for(int i=0; i<cfg->meta->modCount; i++) {
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		if(!strcmp(cfg->meta->mods[i].name, name)) {
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			return cfg->mods[i];
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		}
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	}
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	flib_log_e("Unable to find game mod %s", name);
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	return false;
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}
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int flib_cfg_get_setting(flib_cfg *cfg, const char *name, int def) {
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	for(int i=0; i<cfg->meta->settingCount; i++) {
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		if(!strcmp(cfg->meta->settings[i].name, name)) {
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			return cfg->settings[i];
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		}
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	}
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	flib_log_e("Unable to find game setting %s", name);
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	return def;
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}