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-- File: Resource_Unicode.cdl
-- Created: Thu Sep 26 14:30:43 1996
-- Author: Arnaud BOUZY
-- <adn@legox.paris1.matra-dtv.fr>
---Copyright: Matra Datavision 1996
class Unicode from Resource
---Purpose: 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.
uses ExtendedString from TCollection,
FormatType from Resource
is
ConvertSJISToUnicode(myclass;
fromstr : CString;
tostr : out ExtendedString);
---Purpose: Converts non-ASCII CString <fromstr> in SJIS format
-- to Unicode ExtendedString <tostr>.
ConvertEUCToUnicode(myclass;
fromstr : CString;
tostr : out ExtendedString);
---Purpose: Converts non-ASCII CString <fromstr> in EUC format
-- to Unicode ExtendedString <tostr>.
ConvertGBToUnicode(myclass;
fromstr : CString;
tostr : out ExtendedString);
---Purpose: Converts non-ASCII CString <fromstr> in GB format
-- to Unicode ExtendedString <tostr>.
ConvertANSIToUnicode(myclass;
fromstr : CString;
tostr : out ExtendedString);
---Purpose: Converts non-ASCII CString <fromstr> in ANSI format
-- to Unicode ExtendedString <tostr>.
ConvertUnicodeToSJIS(myclass;
fromstr : ExtendedString;
tostr :out PCharacter;
maxsize : Integer)
---Purpose: 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.
returns Boolean;
ConvertUnicodeToEUC(myclass;
fromstr : ExtendedString;
tostr : out PCharacter;
maxsize : Integer)
---Purpose: 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.
returns Boolean;
ConvertUnicodeToGB(myclass;
fromstr : ExtendedString;
tostr : out PCharacter;
maxsize : Integer)
---Purpose: 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.
returns Boolean;
ConvertUnicodeToANSI(myclass;
fromstr : ExtendedString;
tostr : out PCharacter;
maxsize : Integer)
---Purpose: 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.
returns Boolean;
SetFormat(myclass; typecode : FormatType from Resource);
---Purpose: Defines the current conversion format as typecode.
-- This conversion format will then be used by the
-- functions ConvertFormatToUnicode and
-- ConvertUnicodeToFormat to convert the strings.
GetFormat(myclass)
---Purpose: Returns the current conversion format (either
-- ANSI, EUC, GB or SJIS).
-- The current converting format must be defined in
-- advance with the SetFormat function.
returns FormatType from Resource;
ReadFormat(myclass);
---Purpose: Reads converting format from resource "FormatType"
-- in Resource Manager "CharSet"
ConvertFormatToUnicode(myclass;
fromstr : CString;
tostr : out ExtendedString);
---Purpose: Converts the non-ASCII C string fromstr to the
-- Unicode string of extended characters tostr.
-- fromstr is translated according to the format
-- (either ANSI, EUC, GB or SJIS) returned by the function GetFormat.
ConvertUnicodeToFormat(myclass;
fromstr : ExtendedString;
tostr : out PCharacter;
maxsize : Integer)
---Purpose: Converts the Unicode string of extended
-- characters fromstr to the non-ASCII C string
-- tostr according to the format (either ANSI, EUC,
-- GB or SJIS) returned by the function GetFormat.
-- maxsize limits the size of the string tostr to a
-- maximum number of characters. You need more
-- than twice the length of the string fromstr to
-- complete the conversion.
-- The function returns true if conversion is
-- complete, i.e. the maximum number of characters
-- maxsize is not reached by tostr before the end
-- of conversion of fromstr.
returns Boolean;
end Unicode;
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