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occt/src/Resource/Resource_Unicode.hxx
dpasukhi baf60a870c 0031670: Data Exchange - cp1251 Cyrillic characters in STEP file
Add support for converting pages from Windows encoding to Unicode
2020-10-06 20:40:26 +03:00

147 lines
7.4 KiB
C++

// Created on: 1996-09-26
// Created by: Arnaud BOUZY
// Copyright (c) 1996-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef _Resource_Unicode_HeaderFile
#define _Resource_Unicode_HeaderFile
#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Handle.hxx>
#include <Standard_CString.hxx>
#include <Standard_Boolean.hxx>
#include <Standard_PCharacter.hxx>
#include <Standard_Integer.hxx>
#include <Resource_FormatType.hxx>
class TCollection_ExtendedString;
//! This class provides functions used to convert a non-ASCII C string
//! given in ANSI, EUC, GB or SJIS format, to a
//! Unicode string of extended characters, and vice versa.
class Resource_Unicode
{
public:
DEFINE_STANDARD_ALLOC
//! Converts non-ASCII CString <fromstr> in SJIS format
//! to Unicode ExtendedString <tostr>.
Standard_EXPORT static void ConvertSJISToUnicode (const Standard_CString fromstr, TCollection_ExtendedString& tostr);
//! Converts non-ASCII CString <fromstr> in EUC format
//! to Unicode ExtendedString <tostr>.
Standard_EXPORT static void ConvertEUCToUnicode (const Standard_CString fromstr, TCollection_ExtendedString& tostr);
//! Converts non-ASCII CString <fromstr> in GB format
//! to Unicode ExtendedString <tostr>.
Standard_EXPORT static void ConvertGBToUnicode (const Standard_CString fromstr, TCollection_ExtendedString& tostr);
//! Converts non-ASCII CString <fromstr> in GBK format
//! to Unicode ExtendedString <tostr>.
Standard_EXPORT static Standard_Boolean ConvertGBKToUnicode (const Standard_CString fromstr, TCollection_ExtendedString& tostr);
//! Converts non-ASCII CString <fromstr> in Big5 format
//! to Unicode ExtendedString <tostr>.
Standard_EXPORT static Standard_Boolean ConvertBig5ToUnicode (const Standard_CString fromstr, TCollection_ExtendedString& tostr);
//! Converts Unicode ExtendedString <fromstr> to non-ASCII
//! CString <tostr> in SJIS format, limited to <maxsize>
//! characters. To translate the whole <fromstr>, use more
//! than twice the length of <fromstr>. Returns true if
//! <maxsize> has not been reached before end of conversion.
Standard_EXPORT static Standard_Boolean ConvertUnicodeToSJIS (const TCollection_ExtendedString& fromstr, Standard_PCharacter& tostr, const Standard_Integer maxsize);
//! Converts Unicode ExtendedString <fromstr> to non-ASCII
//! CString <tostr> in EUC format, limited to <maxsize>
//! characters. To translate the whole <fromstr>, use more
//! than twice the length of <fromstr>. Returns true if
//! <maxsize> has not been reached before end of conversion.
Standard_EXPORT static Standard_Boolean ConvertUnicodeToEUC (const TCollection_ExtendedString& fromstr, Standard_PCharacter& tostr, const Standard_Integer maxsize);
//! Converts Unicode ExtendedString <fromstr> to non-ASCII
//! CString <tostr> in GB format, limited to <maxsize>
//! characters. To translate the whole <fromstr>, use more
//! than twice the length of <fromstr>. Returns true if
//! <maxsize> has not been reached before end of conversion.
Standard_EXPORT static Standard_Boolean ConvertUnicodeToGB (const TCollection_ExtendedString& fromstr, Standard_PCharacter& tostr, const Standard_Integer maxsize);
//! Converts Unicode ExtendedString <fromstr> to non-ASCII
//! CString <tostr> in ANSI format, limited to <maxsize>
//! characters. To translate the whole <fromstr>, use more
//! than twice the length of <fromstr>. Returns true if
//! <maxsize> has not been reached before end of conversion.
Standard_EXPORT static Standard_Boolean ConvertUnicodeToANSI (const TCollection_ExtendedString& fromstr, Standard_PCharacter& tostr, const Standard_Integer maxsize);
//! Defines the current conversion format as typecode.
//! This conversion format will then be used by the
//! functions ConvertFormatToUnicode and
//! ConvertUnicodeToFormat to convert the strings.
Standard_EXPORT static void SetFormat (const Resource_FormatType typecode);
//! Returns the current conversion format (either
//! ANSI, EUC, GB or SJIS).
//! The current converting format must be defined in
//! advance with the SetFormat function.
Standard_EXPORT static Resource_FormatType GetFormat();
//! Reads converting format from resource "FormatType"
//! in Resource Manager "CharSet"
Standard_EXPORT static void ReadFormat();
//! Converts the non-ASCII C string (as specified by GetFormat()) to the Unicode string of extended characters.
static void ConvertFormatToUnicode (const Standard_CString theFromStr,
TCollection_ExtendedString& theToStr)
{
return ConvertFormatToUnicode (Resource_Unicode::GetFormat(), theFromStr, theToStr);
}
//! Converts the non-ASCII C string in specified format to the Unicode string of extended characters.
//! @param theFormat [in] source encoding
//! @param theFromStr [in] text to convert
//! @param theToStr [out] destination string
Standard_EXPORT static void ConvertFormatToUnicode (const Resource_FormatType theFormat,
const Standard_CString theFromStr,
TCollection_ExtendedString& theToStr);
//! Converts the Unicode string of extended characters to the non-ASCII string according to specified format.
//! You need more than twice the length of the source string to complete the conversion.
//! The function returns true if conversion is complete, i.e. the maximum number of characters is not reached before the end of conversion.
//! @param theFormat [in] destination encoding
//! @param theFromStr [in] text to convert
//! @param theToStr [out] destination buffer
//! @param theMaxSize [in] destination buffer length
Standard_EXPORT static Standard_Boolean ConvertUnicodeToFormat (const Resource_FormatType theFormat,
const TCollection_ExtendedString& theFromStr,
Standard_PCharacter& theToStr,
const Standard_Integer theMaxSize);
//! Converts the Unicode string of extended characters to the non-ASCII string according to the format returned by the function GetFormat.
//! @param theFromStr [in] text to convert
//! @param theToStr [out] destination buffer
//! @param theMaxSize [in] destination buffer length
static Standard_Boolean ConvertUnicodeToFormat (const TCollection_ExtendedString& theFromStr,
Standard_PCharacter& theToStr,
const Standard_Integer theMaxSize)
{
return ConvertUnicodeToFormat (Resource_Unicode::GetFormat(), theFromStr, theToStr, theMaxSize);
}
};
#endif // _Resource_Unicode_HeaderFile