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/**
* Yudit Unicode Editor Source File
*
* GNU Copyright (C) 1997-2023 Gaspar Sinai <gaspar@yudit.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2,
* dated June 1991. See file COPYYING for details.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "stoolkit/sencoder/SBEncoder.h"
#include "stoolkit/SString.h"
#include "stoolkit/SStringVector.h"
/**
* This is a sample (base) implementation of the core encoding class
* This contains a quoting mechanism where things that can not be
* converted are converted into 9fffffxx
* @author: Gaspar Sinai <gaspar@yudit.org>
* @version: 2000-05-12
*/
SBEncoder::SBEncoder(const SStringVector& delim) : sampleDelimiters(delim)
{
realDelimiters = sampleDelimiters;
}
SBEncoder::~SBEncoder ()
{
}
void
SBEncoder::clear()
{
remaining.clear();
}
static char _HEXMAP[] = {'0', '1', '2', '3',
'4', '5', '6', '7', '8', '9',
'A', 'B', 'C', 'D', 'E', 'F'};
static char _hexmap[] = {'0', '1', '2', '3',
'4', '5', '6', '7', '8', '9',
'a', 'b', 'c', 'd', 'e', 'f'};
/**
* Convert illegal byte to a SD_AS_LITERAL
*/
void
SBEncoder::quoteIllegalUCS4 (unsigned char in)
{
ucs4string.append ((SS_UCS4) 0x9fffff00 | (SS_UCS4) in);
}
/**
* append '=XX' hex quoted input to ucs4string
*/
void
SBEncoder::quoteUCS4 (unsigned char in)
{
ucs4string.append ((SS_UCS4) '=');
ucs4string.append ((SS_UCS4) _HEXMAP[((unsigned int) in >> 4) & 0xf]);
ucs4string.append ((SS_UCS4) _HEXMAP[(unsigned int) in & 0xf]);
}
/**
* append '\uxxxx' hex quoted input to ucs4string
*/
void
SBEncoder::quoteUCS4 (SS_UCS2 in)
{
ucs4string.append ((SS_UCS4) '\\');
ucs4string.append ((SS_UCS4) 'u');
ucs4string.append ((SS_UCS4) _hexmap[(in>>12)&0xf]);
ucs4string.append ((SS_UCS4) _hexmap[(in>>8)&0xf]);
ucs4string.append ((SS_UCS4) _hexmap[(in>>4)&0xf]);
ucs4string.append ((SS_UCS4) _hexmap[in&0xf]);
}
void
SBEncoder::quoteUCS4 (SS_UCS4 in)
{
ucs4string.append ((SS_UCS4) '\\');
ucs4string.append ((SS_UCS4) 'U');
ucs4string.append ((SS_UCS4) _hexmap[(in>>28)&0xf]);
ucs4string.append ((SS_UCS4) _hexmap[(in>>24)&0xf]);
ucs4string.append ((SS_UCS4) _hexmap[(in>>20)&0xf]);
ucs4string.append ((SS_UCS4) _hexmap[(in>>16)&0xf]);
ucs4string.append ((SS_UCS4) _hexmap[(in>>12)&0xf]);
ucs4string.append ((SS_UCS4) _hexmap[(in>>8)&0xf]);
ucs4string.append ((SS_UCS4) _hexmap[(in>>4)&0xf]);
ucs4string.append ((SS_UCS4) _hexmap[in&0xf]);
}
/**
* append '\uxxxx' hex quoted input to ucs4string
*/
void
SBEncoder::quoteIllegalString (SS_UCS4 in)
{
if (in < 0x10000)
{
sstring.append ((char) '\\');
sstring.append ((char) 'u');
sstring.append ((char) _hexmap[(in>>12)&0xf]);
sstring.append ((char) _hexmap[(in>>8)&0xf]);
sstring.append ((char) _hexmap[(in>>4)&0xf]);
sstring.append ((char) _hexmap[in&0xf]);
}
else if ((in & 0x9fffff00) == 0x9fffff00)
{
sstring.append ((char)( in & 0xff));
}
else
{
sstring.append ((char) '\\');
sstring.append ((char) 'U');
sstring.append ((char) _hexmap[(in>>28)&0xf]);
sstring.append ((char) _hexmap[(in>>24)&0xf]);
sstring.append ((char) _hexmap[(in>>20)&0xf]);
sstring.append ((char) _hexmap[(in>>16)&0xf]);
sstring.append ((char) _hexmap[(in>>12)&0xf]);
sstring.append ((char) _hexmap[(in>>8)&0xf]);
sstring.append ((char) _hexmap[(in>>4)&0xf]);
sstring.append ((char) _hexmap[in&0xf]);
}
}
/**
* append '\uxxxx' hex quoted input to ucs4string
*/
void
SBEncoder::quoteString (SS_UCS4 in)
{
if (in < 0x10000)
{
sstring.append ((char) '\\');
sstring.append ((char) 'u');
sstring.append ((char) _hexmap[(in>>12)&0xf]);
sstring.append ((char) _hexmap[(in>>8)&0xf]);
sstring.append ((char) _hexmap[(in>>4)&0xf]);
sstring.append ((char) _hexmap[in&0xf]);
}
else if ((in & 0x9fffff00) == 0x9fffff00)
{
sstring.append ((char) '=');
sstring.append ((char) _hexmap[(in>>4)&0xf]);
sstring.append ((char) _hexmap[in&0xf]);
}
else
{
sstring.append ((char) '\\');
sstring.append ((char) 'U');
sstring.append ((char) _hexmap[(in>>28)&0xf]);
sstring.append ((char) _hexmap[(in>>24)&0xf]);
sstring.append ((char) _hexmap[(in>>20)&0xf]);
sstring.append ((char) _hexmap[(in>>16)&0xf]);
sstring.append ((char) _hexmap[(in>>12)&0xf]);
sstring.append ((char) _hexmap[(in>>8)&0xf]);
sstring.append ((char) _hexmap[(in>>4)&0xf]);
sstring.append ((char) _hexmap[in&0xf]);
}
}
void
SBEncoder::quoteStringLE (SS_UCS4 in)
{
if (in < 0x10000)
{
sstring.append ((char) 0);
sstring.append ((char) '\\');
sstring.append ((char) 0);
sstring.append ((char) 'u');
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>12)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>8)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>4)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[in&0xf]);
}
else if ((in & 0x9fffff00) == 0x9fffff00)
{
sstring.append ((char) 0);
sstring.append ((char) '=');
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>4)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[in&0xf]);
}
else
{
sstring.append ((char) 0);
sstring.append ((char) '\\');
sstring.append ((char) 0);
sstring.append ((char) 'U');
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>28)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>24)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>20)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>16)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>12)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>8)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>4)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[in&0xf]);
}
}
void
SBEncoder::quoteStringBE (SS_UCS4 in)
{
if (in < 0x10000)
{
sstring.append ((char) '\\');
sstring.append ((char) 0);
sstring.append ((char) 'u');
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>12)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>8)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>4)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[in&0xf]);
sstring.append ((char) 0);
}
else if ((in & 0x9fffff00) == 0x9fffff00)
{
sstring.append ((char) '=');
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>4)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[in&0xf]);
sstring.append ((char) 0);
}
else
{
sstring.append ((char) '\\');
sstring.append ((char) 0);
sstring.append ((char) 'U');
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>28)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>24)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>20)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>16)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>12)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>8)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[(in>>4)&0xf]);
sstring.append ((char) 0);
sstring.append ((char) _hexmap[in&0xf]);
sstring.append ((char) 0);
}
}
/**
* This is encoding a unicode string into a bytestring
* @param input is a unicode string.
*/
const SString&
SBEncoder::encode (const SV_UCS4& input)
{
return sstring;
}
/**
* Decode an input string into a unicode string.
* @param input is a string.
* he output can be null, in this case a line is not
* read fully. If input size is zero output will be flushed.
*/
const SV_UCS4&
SBEncoder::decode (const SString& input)
{
return ucs4string;
}
/**
* These methods guess the line delimiters for the input
* The one without arguments is giving the 'first approximation'
* It returns an inclusive list of all possibilities.
*/
const SStringVector&
SBEncoder::delimiters ()
{
return realDelimiters;
}
/**
* These methods guess the line delimiters for the input
* The one without arguments is giving the 'first approximation'
* It returns an exact list
*/
const SStringVector&
SBEncoder::delimiters (const SString& sample)
{
return sampleDelimiters;
}
/* for non-clustering it is remainder */
SString
SBEncoder::preEditBuffer() const
{
return SString();
}
/* for clustering */
SV_UCS4
SBEncoder::postEditBuffer () const
{
return SV_UCS4();
}
/**
* return key value map to see what decodes to what
* @param key will contain the keys
* @param value will contain the values
* @param _size is the maximum size of returned arrays
* @return the real size of the arrays.
*/
unsigned int
SBEncoder::getDecoderMap (SStringVector* key, SStringVector* value,
unsigned int _size)
{
key->clear();
value->clear();
return 0;
}
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