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/* $Id$ */

/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file strings_func.h Functions related to OTTD's strings. */

#ifndef STRINGS_FUNC_H
#define STRINGS_FUNC_H

#include "strings_type.h"
#include "string_type.h"

char *InlineString(char *buf, StringID string);
char *GetString(char *buffr, StringID string, const char *last);
char *GetStringWithArgs(char *buffr, uint string, int64 *argv, const int64 *argve, const char *last, WChar *argt = NULL);
const char *GetStringPtr(StringID string);

void InjectDParam(uint amount);

/**
 * Set a string parameter \a v at index \a n in a given array \a s.
 * @param s Array of string parameters.
 * @param n Index of the string parameter.
 * @param v Value of the string parameter.
 */
static inline void SetDParamX(uint64 *s, uint n, uint64 v)
{
	s[n] = v;
}

/**
 * Set a string parameter \a v at index \a n in the global string parameter array.
 * @param n Index of the string parameter.
 * @param v Value of the string parameter.
 */
static inline void SetDParam(uint n, uint64 v)
{
	extern uint64 _decode_parameters[20];

	assert(n < lengthof(_decode_parameters));
	_decode_parameters[n] = v;
}

void SetDParamStr(uint n, const char *str);

/**
 * Get the current string parameter at index \a n from parameter array \a s.
 * @param s Array of string parameters.
 * @param n Index of the string parameter.
 * @return Value of the requested string parameter.
 */
static inline uint64 GetDParamX(const uint64 *s, uint n)
{
	return s[n];
}

/**
 * Get the current string parameter at index \a n from the global string parameter array.
 * @param n Index of the string parameter.
 * @return Value of the requested string parameter.
 */
static inline uint64 GetDParam(uint n)
{
	extern uint64 _decode_parameters[20];

	assert(n < lengthof(_decode_parameters));
	return _decode_parameters[n];
}

/**
 * Copy \a num string parameters from array \a src into the global string parameter array.
 * @param offs Index in the global array to copy the first string parameter to.
 * @param src  Source array of string parameters.
 * @param num  Number of string parameters to copy.
 */
static inline void CopyInDParam(int offs, const uint64 *src, int num)
{
	extern uint64 _decode_parameters[20];
	memcpy(_decode_parameters + offs, src, sizeof(uint64) * (num));
}

/**
 * Copy \a num string parameters from the global string parameter array to the \a dst array.
 * @param dst  Destination array of string parameters.
 * @param offs Index in the global array to copy the first string parameter from.
 * @param num  Number of string parameters to copy.
 */
static inline void CopyOutDParam(uint64 *dst, int offs, int num)
{
	extern uint64 _decode_parameters[20];
	memcpy(dst, _decode_parameters + offs, sizeof(uint64) * (num));
}

extern TextDirection _current_text_dir; ///< Text direction of the currently selected language

void InitializeLanguagePacks();
const char *GetCurrentLanguageIsoCode();

int CDECL StringIDSorter(const StringID *a, const StringID *b);

/** Key comparison function for std::map */
struct StringIDCompare
{
	bool operator()(StringID s1, StringID s2) const { return StringIDSorter(&s1, &s2) < 0; }
};

void CheckForMissingGlyphsInLoadedLanguagePack();

int strnatcmp(const char *s1, const char *s2);

#endif /* STRINGS_FUNC_H */