author | Jan Vrany <jan.vrany@fit.cvut.cz> |
Mon, 20 Dec 2010 07:13:27 +0000 | |
branch | jv |
changeset 17814 | b75a7f0c346b |
parent 17807 | 06cc6c49e291 |
child 17834 | 04ff72c5039a |
permissions | -rw-r--r-- |
17711 | 1 |
" |
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COPYRIGHT (c) 2004 by eXept Software AG |
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All Rights Reserved |
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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"{ Package: 'stx:libbasic' }" |
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"{ NameSpace: CharacterEncoderImplementations }" |
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TwoByteEncoder subclass:#JIS0208_to_SJIS |
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instanceVariableNames:'' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'Collections-Text-Encodings' |
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! |
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!JIS0208_to_SJIS class methodsFor:'documentation'! |
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copyright |
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" |
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COPYRIGHT (c) 2004 by eXept Software AG |
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All Rights Reserved |
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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! ! |
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!JIS0208_to_SJIS class methodsFor:'mapping'! |
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mapFileURL1_relativePathName |
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^ 'OBSOLETE/EASTASIA/JIS/SHIFTJIS.TXT' |
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! ! |
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!JIS0208_to_SJIS class methodsFor:'queries'! |
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nameOfDecodedCode |
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"I encode sjis into jis" |
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^ #'jis0208' |
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! ! |
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!JIS0208_to_SJIS methodsFor:'encoding & decoding'! |
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decodeString:aString |
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"return a new JIS-Encoded-String containing the characters from aString, |
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which are interpreted as Shift-JIS encoded singleByte chars. |
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Shift-JIS is a leadyByte code, with a variable-length encoding." |
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|newString char1 char2 |
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sz "{ Class: SmallInteger }" |
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dstIdx "{ Class: SmallInteger }" |
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srcIdx "{ Class: SmallInteger }" |
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b1 "{ Class: SmallInteger }" |
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b2 "{ Class: SmallInteger }" |
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val "{ Class: SmallInteger }" |
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any16bit romans| |
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sz := aString size. |
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sz == 0 ifTrue:[^ aString]. |
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newString := TwoByteString new:sz. |
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any16bit := false. |
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dstIdx := 1. |
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srcIdx := 1. |
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romans := CharacterEncoderImplementations::JIS0208 romanTable. |
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%{ |
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if (__isStringLike(aString) |
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&& (__Class(newString) == @global(TwoByteString))) { |
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INT _dstIdx = 0, _srcIdx = 0; |
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int _sz = __intVal(sz); |
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unsigned char *_cp = __stringVal(aString); |
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unsigned char _c1, _c2; |
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unsigned short *_jcp = (unsigned short *)__stringVal(newString); |
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while (_srcIdx < _sz) { |
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int _val; |
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_c1 = _cp[_srcIdx]; |
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_srcIdx++; |
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if ((_srcIdx < _sz) |
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&& (((_c1 >= 129) && (_c1 <= 159)) |
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|| ((_c1 >= 224) && (_c1 <= 239)))) { |
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_c2 = _cp[_srcIdx]; |
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_srcIdx++; |
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if ((_c2 >= 64) && (_c2 <= 252)) { |
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int _adjust, _rowOffs, _cellOffs; |
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int _b1, _b2; |
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_adjust = (_c2 < 159) ? 1 : 0; |
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_rowOffs = (_c1 < 160) ? 112 : 176; |
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if (_adjust) { |
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_cellOffs = 31 + ((_c2 > 127) ? 1 : 0); |
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} else { |
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_cellOffs = 126; |
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} |
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_b1 = ((_c1 - _rowOffs) << 1) - _adjust; |
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_b2 = (_c2 - _cellOffs); |
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_val = (_b1<<8) + _b2; |
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if (_val <= 0) { |
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/* decoder error - let smalltalk handle that */ |
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_srcIdx -= 2; |
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goto getOutOfHere; |
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} |
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if (_val > 0xFF) any16bit = true; |
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_jcp[_dstIdx] = _val; |
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} else { |
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/* mhmh - append untranslated */ |
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_jcp[_dstIdx] = _c1; |
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_dstIdx++; |
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_jcp[_dstIdx] = _c2; |
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} |
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} else { |
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if ((_c1 >= 0xA1 /* 161 */) && (_c1 <= 0xDF /* 223 */)) { |
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/* HALFWIDTH KATAKANA |
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* map half-width katakana to 8E:xx |
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*/ |
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_val = _c1 - 128; |
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_val = _val + 0x8E00; |
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any16bit = true; |
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_jcp[_dstIdx] = _val; |
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} else { |
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/* roman characters are translated as per romanTable */ |
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_jcp[_dstIdx] = _c1; |
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if ((romans != nil) |
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&& (__isArray(romans)) |
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&& ((_c1 - 0x20) < __arraySize(romans))) { |
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any16bit = true; |
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_jcp[_dstIdx] = __intVal(__ArrayInstPtr(romans)->a_element[(_c1 - 0x20)]); |
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} |
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} |
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} |
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_dstIdx++; |
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} |
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getOutOfHere: ; |
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dstIdx = __mkSmallInteger(_dstIdx+1); |
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srcIdx = __mkSmallInteger(_srcIdx+1); |
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} |
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%}. |
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[srcIdx <= sz] whileTrue:[ |
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"/ |
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"/ scan for next character in 129..159 or 224..239 |
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"/ |
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char1 := aString at:srcIdx. |
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srcIdx := srcIdx + 1. |
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b1 := char1 codePoint. |
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((srcIdx <= sz) |
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and:[(b1 >= 16r81"129" and:[b1 <= 16r9F"159"]) "/ SJIS1 81 .. 9F |
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or:[b1 >= 16rE0"224" and:[b1 <= 16rEF"239"]]]) ifTrue:[ "/ E0 .. EF |
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char2 := aString at:srcIdx. |
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srcIdx := srcIdx + 1. |
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b2 := char2 codePoint. |
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(b2 >= 16r40"64" and:[b2 <= 16rFC"252"]) ifTrue:[ "/ SJIS2 40 .. FC |
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|adjust rowOffs cellOffs| |
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adjust := (b2 < 16r9F"159") ifTrue:[1] ifFalse:[0]. |
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rowOffs := b1 < 16rA0"160" ifTrue:[112] ifFalse:[176]. |
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adjust == 1 ifTrue:[ |
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cellOffs := 31 + (b2 > 127 ifTrue:[1] ifFalse:[0]). |
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] ifFalse:[ |
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cellOffs := 126. |
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]. |
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b1 := ((b1 - rowOffs) bitShift:1) - adjust. |
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b2 := (b2 - cellOffs). |
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val := (b1 bitShift:8) + b2. |
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val <= 0 ifTrue:[ |
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DecodingError |
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raiseWith:aString |
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errorString:'SJIS decoding failed (not SJIS encoded ?)'. |
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newString at:dstIdx put:char1. |
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dstIdx := dstIdx + 1. |
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newString at:dstIdx put:char2. |
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] ifFalse:[ |
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val > 16rFF ifTrue:[any16bit := true]. |
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newString at:dstIdx put:(Character value:val). |
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] |
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] ifFalse:[ |
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"/ mhmh - append untranslated |
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newString at:dstIdx put:char1. |
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dstIdx := dstIdx + 1. |
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newString at:dstIdx put:char2. |
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] |
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] ifFalse:[ |
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(b1 >= 16rA1 "161" and:[b1 <= 16rDF "223"]) ifTrue:[ "/ HALFWIDTH KATAKANA |
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"/ map half-width katakan to 8E:xx |
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val := b1 - 128. |
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val := val + (16r8E"142" bitShift:8). |
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any16bit := true. |
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newString at:dstIdx put:(Character value:val). |
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] ifFalse:[ |
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"/ roman characters translated as per romanTable |
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newString at:dstIdx put:char1 |
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romans isArray ifTrue:[ |
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char1 codePoint < romans size ifTrue:[ |
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any16bit := true. |
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newString at:dstIdx put:(Character value:(romans at:char1 codePoint-32+1)). |
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] |
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] |
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] |
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]. |
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dstIdx := dstIdx + 1. |
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]. |
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any16bit ifFalse:[ |
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newString := String fromString:newString |
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]. |
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(dstIdx-1) ~~ sz ifTrue:[ |
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newString := newString copyTo:dstIdx - 1. |
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]. |
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^ newString |
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"simple: |
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CharacterEncoderImplementations::JIS0208_to_SJIS decodeString:'hello' |
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(CharacterEncoder encoderFor:#sjis) decodeString:'hello' |
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CharacterEncoderImplementations::JIS0208_to_SJIS decodeString:('../../doc/online/japanese/TOP.html' asFilename contents asString) |
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'../../doc/online/japanese/TOP.html' asFilename contents asString |
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decodeFrom:#sjis |
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" |
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! |
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encodeString:aJISString |
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"return a new string with aJISStrings characters as SJIS encoded 8bit string. |
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The resulting string is only useful to be stored on some external file, |
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not for being displayed in an ST/X view." |
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|sz "{ Class: SmallInteger }" |
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rval "{ Class: SmallInteger }" |
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val "{ Class: SmallInteger }" |
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romans c out isSJIS| |
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romans := JIS0208 romanTable. |
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sz := aJISString size. |
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sz == 0 ifTrue:[^ '']. |
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out := WriteStream on:(String new:(sz * 2)). |
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1 to:sz do:[:srcIndex | |
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val := (c := aJISString at:srcIndex) codePoint. |
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(val <= 128) ifTrue:[ |
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"/ a control or ascii character |
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out nextPut:c. |
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] ifFalse:[ |
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(val == 16rFFFF "invalid-char") ifTrue:[ |
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out nextPut:Character space. |
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] ifFalse:[ |
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(val > 150 and:[val < 224]) ifTrue:[ |
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"/ ascii subset |
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out nextPut:c. |
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] ifFalse:[ |
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"/ should not happen ... |
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val <= 255 ifTrue:[ |
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out nextPut:c. |
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] ifFalse:[ |
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isSJIS := true. |
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277 |
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"/ check for HALFWIDTH KATAKANA |
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"/ 8E:xx |
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"/ NO: halfwidth katakana no longer generated |
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"/ remains there as full-width katakana |
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282 |
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"/ (val bitAnd:16rFF00) == 16r8E00 ifTrue:[ |
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"/ |b| |
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"/ |
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"/ b := (val bitAnd:16rFF) + 128. |
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"/ (b >= 16rA1 "161" and:[b <= 16rDF "223"]) ifTrue:[ |
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"/ out nextPut:(Character value:b). |
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"/ isSJIS := false. |
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"/ ]. |
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"/ ]. |
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292 |
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293 |
isSJIS ifTrue:[ |
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"/ check for a roman character |
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295 |
(val between:"romanTable min" 16r2121 and:"romanTable max" 16r2573) ifTrue:[ |
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rval := romans indexOf:val. |
|
297 |
rval ~~ 0 ifTrue:[ |
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298 |
rval := rval - 1 + 32. |
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299 |
rval <= 16r7F ifTrue:[ "/ do not translate halfwidth katakana |
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out nextPut:(Character value:rval). |
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isSJIS := false. |
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] |
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]. |
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]. |
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305 |
]. |
|
306 |
||
307 |
isSJIS ifTrue:[ |
|
308 |
|b1 b2 rowOffset cellOffset| |
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309 |
||
310 |
b1 := (val bitShift:-8). |
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b2 := (val bitAnd:16rFF). |
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rowOffset := (b1 < 95) ifTrue:[112] ifFalse:[176]. |
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cellOffset := b1 odd ifTrue:[(b2 > 95) ifTrue:[32] ifFalse:[31]] |
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314 |
ifFalse:[126]. |
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315 |
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316 |
out nextPut:(Character value:(((b1 + 1) bitShift:-1) + rowOffset)). |
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317 |
out nextPut:(Character value:b2 + cellOffset). |
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] |
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319 |
] |
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320 |
] |
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] |
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]. |
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]. |
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324 |
^ out contents |
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! ! |
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326 |
||
327 |
!JIS0208_to_SJIS methodsFor:'private'! |
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328 |
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329 |
newString:size |
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330 |
^ JISEncodedString new:size |
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331 |
! ! |
|
332 |
||
333 |
!JIS0208_to_SJIS methodsFor:'queries'! |
|
334 |
||
335 |
nameOfEncoding |
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336 |
^ #'sjis' |
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337 |
! ! |
|
338 |
||
339 |
!JIS0208_to_SJIS class methodsFor:'documentation'! |
|
340 |
||
341 |
version |
|
17814 | 342 |
^ '$Id: CharacterEncoderImplementations__JIS0208_to_SJIS.st 10602 2010-12-20 07:13:27Z vranyj1 $' |
17735 | 343 |
! |
344 |
||
345 |
version_CVS |
|
17814 | 346 |
^ 'Header: /cvs/stx/stx/libbasic/Encoder_SJIS.st,v 1.12 2009/11/05 16:26:27 stefan Exp ' |
17761
b0e5971141bc
Added Lookup and BuiltinLookup classes
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
17735
diff
changeset
|
347 |
! |
b0e5971141bc
Added Lookup and BuiltinLookup classes
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
17735
diff
changeset
|
348 |
|
b0e5971141bc
Added Lookup and BuiltinLookup classes
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
17735
diff
changeset
|
349 |
version_SVN |
17814 | 350 |
^ '$Id: CharacterEncoderImplementations__JIS0208_to_SJIS.st 10602 2010-12-20 07:13:27Z vranyj1 $' |
17711 | 351 |
! ! |
17807 | 352 |
|
17814 | 353 |