OpenTTD-patches/src/strings_func.h
2019-11-10 17:59:20 +00:00

286 lines
7.8 KiB
C++

/*
* 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"
#include "gfx_type.h"
#include "core/bitmath_func.hpp"
/**
* Extract the StringTab from a StringID.
* @param str String identifier
* @return StringTab from \a str
*/
static inline StringTab GetStringTab(StringID str)
{
StringTab result = (StringTab)(str >> TAB_SIZE_BITS);
if (result >= TEXT_TAB_NEWGRF_START) return TEXT_TAB_NEWGRF_START;
if (result >= TEXT_TAB_GAMESCRIPT_START) return TEXT_TAB_GAMESCRIPT_START;
return result;
}
/**
* Extract the StringIndex from a StringID.
* @param str String identifier
* @return StringIndex from \a str
*/
static inline uint GetStringIndex(StringID str)
{
return str - (GetStringTab(str) << TAB_SIZE_BITS);
}
/**
* Create a StringID
* @param tab StringTab
* @param index StringIndex
* @return StringID composed from \a tab and \a index
*/
static inline StringID MakeStringID(StringTab tab, uint index)
{
if (tab == TEXT_TAB_NEWGRF_START) {
assert(index < TAB_SIZE_NEWGRF);
} else if (tab == TEXT_TAB_GAMESCRIPT_START) {
assert(index < TAB_SIZE_GAMESCRIPT);
} else {
assert(tab < TEXT_TAB_END);
assert(index < TAB_SIZE);
}
return (tab << TAB_SIZE_BITS) + index;
}
class StringParameters {
StringParameters *parent; ///< If not nullptr, 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 nullptr 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(nullptr),
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(nullptr),
data((uint64 *)data),
type(nullptr),
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.GetDataLeft());
if (parent.type == nullptr) {
this->type = nullptr;
} else {
this->type = parent.type + parent.offset;
}
}
~StringParameters()
{
if (this->parent != nullptr) {
this->parent->offset += this->num_param;
}
}
void ClearTypeInformation();
int64 GetInt64(WChar type = 0);
/** 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];
}
/** Return the amount of elements which can still be read. */
uint GetDataLeft() const
{
return this->num_param - 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 != nullptr;
}
/** 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 *GetString(char *buffr, StringID string, const char *last);
char *GetStringWithArgs(char *buffr, StringID string, StringParameters *args, const char *last, uint case_index = 0, bool game_script = false);
const char *GetStringPtr(StringID string);
uint ConvertKmhishSpeedToDisplaySpeed(uint speed);
uint ConvertDisplaySpeedToKmhishSpeed(uint speed);
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 SetDParamMaxValue(uint n, uint64 max_value, uint min_count = 0, FontSize size = FS_NORMAL);
void SetDParamMaxDigits(uint n, uint count, FontSize size = FS_NORMAL);
void SetDParamStr(uint n, const char *str);
void CopyInDParam(int offs, const uint64 *src, int num);
void CopyOutDParam(uint64 *dst, int offs, int num);
void CopyOutDParam(uint64 *dst, const char **strings, StringID string, 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();
bool StringIDSorter(const StringID &a, const StringID &b);
/**
* A searcher for missing glyphs.
*/
class MissingGlyphSearcher {
public:
/** Make sure everything gets destructed right. */
virtual ~MissingGlyphSearcher() {}
/**
* Get the next string to search through.
* @return The next string or nullptr if there is none.
*/
virtual const char *NextString() = 0;
/**
* Get the default (font) size of the string.
* @return The font size.
*/
virtual FontSize DefaultSize() = 0;
/**
* Reset the search, i.e. begin from the beginning again.
*/
virtual void Reset() = 0;
/**
* Whether to search for a monospace font or not.
* @return True if searching for monospace.
*/
virtual bool Monospace() = 0;
/**
* Set the right font names.
* @param settings The settings to modify.
* @param font_name The new font name.
* @param os_data Opaque pointer to OS-specific data.
*/
virtual void SetFontNames(struct FreeTypeSettings *settings, const char *font_name, const void *os_data = nullptr) = 0;
bool FindMissingGlyphs(const char **str);
};
void CheckForMissingGlyphs(bool base_font = true, MissingGlyphSearcher *search = nullptr);
#endif /* STRINGS_FUNC_H */