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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"
class StringParameters {
StringParameters *parent; ///< If not NULL, this instance references data from this parent instance.
uint64 *data; ///< Array with the actual data.
WChar *type; ///< Array with type information about the data. Can be NULL when no type information is needed. See #StringControlCode.
public:
uint offset; ///< Current offset in the data/type arrays.
uint num_param; ///< Length of the data array.
/** Create a new StringParameters instance. */
StringParameters(uint64 *data, uint num_param, WChar *type) :
parent(NULL),
data(data),
type(type),
offset(0),
num_param(num_param)
{ }
/** Create a new StringParameters instance. */
template <size_t Tnum_param>
StringParameters(int64 (&data)[Tnum_param]) :
parent(NULL),
data((uint64 *)data),
type(NULL),
offset(0),
num_param(Tnum_param)
{
assert_compile(sizeof(data[0]) == sizeof(uint64));
}
/**
* Create a new StringParameters instance that can reference part of the data of
* the given partent instance.
*/
StringParameters(StringParameters &parent, uint size) :
parent(&parent),
data(parent.data + parent.offset),
offset(0),
num_param(size)
{
assert(size <= parent.num_param - parent.offset);
if (parent.type == NULL) {
this->type = NULL;
} else {
this->type = parent.type + parent.offset;
}
}
~StringParameters()
{
if (this->parent != NULL) {
this->parent->offset += this->num_param;
}
}
void ClearTypeInformation();
/**
* Read an int64 from the argument array. The offset is increased
* so the next time GetInt64 is called the next value is read.
*/
int64 GetInt64(WChar type = 0)
{
assert(this->offset < this->num_param);
if (this->type != NULL) {
assert(this->type[this->offset] == 0 || this->type[this->offset] == type);
this->type[this->offset] = type;
}
return this->data[this->offset++];
}
/** Read an int32 from the argument array. @see GetInt64. */
int32 GetInt32(WChar type = 0)
{
return (int32)this->GetInt64(type);
}
void ShiftParameters(uint amount);
/** Get a pointer to the current element in the data array. */
uint64 *GetDataPointer() const
{
return &this->data[this->offset];
}
/** Get a pointer to a specific element in the data array. */
uint64 *GetPointerToOffset(uint offset) const
{
assert(offset < this->num_param);
return &this->data[offset];
}
/** Does this instance store information about the type of the parameters. */
bool HasTypeInformation() const
{
return this->type != NULL;
}
/** Get the type of a specific element. */
WChar GetTypeAtOffset(uint offset) const
{
assert(offset < this->num_param);
assert(this->HasTypeInformation());
return this->type[offset];
}
void SetParam(uint n, uint64 v)
{
assert(n < this->num_param);
this->data[n] = v;
}
uint64 GetParam(uint n) const
{
assert(n < this->num_param);
return this->data[n];
}
};
extern StringParameters _global_string_params;
char *InlineString(char *buf, StringID string);
char *GetString(char *buffr, StringID string, const char *last);
char *GetStringWithArgs(char *buffr, uint string, StringParameters *args, const char *last);
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)
{
_global_string_params.SetParam(n, v);
}
void SetDParamStr(uint n, const char *str);
void CopyInDParam(int offs, const uint64 *src, int num);
void CopyOutDParam(uint64 *dst, int offs, int num);
/**
* 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)
{
return _global_string_params.GetParam(n);
}
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);
void CheckForMissingGlyphsInLoadedLanguagePack();
#endif /* STRINGS_FUNC_H */
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