author | Claus Gittinger <cg@exept.de> |
Wed, 25 Mar 2015 20:21:49 +0100 | |
changeset 18142 | cfbb3b0237a9 |
parent 18141 | 65e703bac1cc |
child 18159 | 4bae339a4401 |
permissions | -rw-r--r-- |
17664 | 1 |
"{ Encoding: utf8 }" |
2 |
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" |
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4 |
COPYRIGHT (c) 2004 by eXept Software AG |
14209 | 5 |
All Rights Reserved |
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6 |
|
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7 |
This software is furnished under a license and may be used |
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8 |
only in accordance with the terms of that license and with the |
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parents:
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9 |
inclusion of the above copyright notice. This software may not |
7577df77ba95
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parents:
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10 |
be provided or otherwise made available to, or used by, any |
7577df77ba95
character encodings - first attempt
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parents:
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11 |
other person. No title to or ownership of the software is |
7577df77ba95
character encodings - first attempt
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parents:
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12 |
hereby transferred. |
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13 |
" |
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"{ Package: 'stx:libbasic' }" |
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|
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"{ NameSpace: Smalltalk }" |
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||
8118 | 18 |
Object subclass:#CharacterEncoder |
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instanceVariableNames:'' |
20 |
classVariableNames:'EncoderClassesByName EncodersByName CachedEncoders AccessLock |
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21 |
NullEncoderInstance Jis7KanjiEscapeSequence |
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22 |
Jis7RomanEscapeSequence JisISO2022EscapeSequence |
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23 |
Jis7KanjiOldEscapeSequence' |
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poolDictionaries:'' |
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category:'Collections-Text-Encodings' |
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! |
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CharacterEncoder subclass:#CompoundEncoder |
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instanceVariableNames:'decoder encoder' |
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classVariableNames:'' |
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poolDictionaries:'' |
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privateIn:CharacterEncoder |
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! |
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CharacterEncoder subclass:#DefaultEncoder |
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instanceVariableNames:'' |
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classVariableNames:'' |
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poolDictionaries:'' |
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privateIn:CharacterEncoder |
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7932 | 40 |
! |
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CharacterEncoder subclass:#InverseEncoder |
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instanceVariableNames:'decoder' |
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classVariableNames:'' |
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poolDictionaries:'' |
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46 |
privateIn:CharacterEncoder |
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! |
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CharacterEncoder subclass:#NullEncoder |
17664 | 50 |
instanceVariableNames:'' |
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classVariableNames:'' |
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poolDictionaries:'' |
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privateIn:CharacterEncoder |
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! |
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CharacterEncoder subclass:#OtherEncoding |
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instanceVariableNames:'' |
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classVariableNames:'' |
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poolDictionaries:'' |
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privateIn:CharacterEncoder |
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! |
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CharacterEncoder subclass:#TwoStepEncoder |
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instanceVariableNames:'encoder1 encoder2' |
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classVariableNames:'' |
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poolDictionaries:'' |
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privateIn:CharacterEncoder |
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! |
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!CharacterEncoder class methodsFor:'documentation'! |
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72 |
copyright |
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73 |
" |
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74 |
COPYRIGHT (c) 2004 by eXept Software AG |
14209 | 75 |
All Rights Reserved |
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76 |
|
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77 |
This software is furnished under a license and may be used |
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character encodings - first attempt
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parents:
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|
78 |
only in accordance with the terms of that license and with the |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
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79 |
inclusion of the above copyright notice. This software may not |
7577df77ba95
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parents:
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|
80 |
be provided or otherwise made available to, or used by, any |
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parents:
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81 |
other person. No title to or ownership of the software is |
7577df77ba95
character encodings - first attempt
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parents:
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82 |
hereby transferred. |
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character encodings - first attempt
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" |
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character encodings - first attempt
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84 |
! |
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85 |
|
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documentation |
87 |
" |
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unfinished code - please read howToAddMoreCoders. |
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89 |
|
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Character mappings are based on information in character maps found at either: |
8226 | 91 |
http://std.dkuug.dk/i18n/charmaps |
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92 |
or: |
8226 | 93 |
http://www.unicode.org/Public/MAPPINGS |
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No Warranty. |
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All the ISO 8859 codesets include ASCII as a proper codeset within them: |
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ISO 8859-1: Latin 1 - Western European Languages. |
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ISO 8859-2: Latin 2 - Eastern European Languages. |
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ISO 8859-3: Latin 3 - Afrikaans, Catalan, Dutch, English, Esperanto, German, |
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Italian, Maltese, Spanish and Turkish. |
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ISO 8859-4: Latin 4 - Danish, English, Estonian, Finnish, German, Greenlandic, Lappish and Latvian. |
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104 |
ISO 8859-5: Latin/Cyrillic - Bulgarian, Byelorussian, English, Macedonian, Russian, Serbo-Croat and Ukranian. |
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ISO 8859-6: Latin/Arabic - Arabic. |
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ISO 8859-7: Latin/Greek - Greek. |
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ISO 8859-8: Latin/Hebrew - Hebrew. |
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ISO 8859-9: Latin 5 - Danish, Dutch, English, Finnish, French, German, Irish, Italian, |
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Norwegian, Portuguese, Spanish, Swedish and Turkish. |
|
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ISO 8859-10: Latin 6 - Danish, English, Estonian, Finnish, German, Greenlandic, Icelandic, |
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Sami (Lappish), Latvian, Lithuanian, Norwegian, Faroese and Swedish. |
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8810 | 112 |
[author:] |
113 |
Claus Gittinger |
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" |
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! |
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|
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117 |
examples |
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" |
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[exBegin] |
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|s1 s2| |
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|
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s1 := 'hello'. |
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s2 := CharacterEncoder encodeString:s1 from:#'iso8859-1' into:#'unicode'. |
124 |
s2 |
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125 |
[exEnd] |
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[exBegin] |
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|s1 s2| |
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|
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s1 := 'hello'. |
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s2 := CharacterEncoder encodeString:s1 from:#'iso8859-1' into:#'iso8859-7'. |
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s2 |
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[exEnd] |
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" |
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! |
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|
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howToAddMoreCoders |
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138 |
" |
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Coders can be hand-written or automagically generated via a mapping table. |
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Examples for hand-written coders are UTF8_to_ISO10464 or JIS0208_to_JIS7. |
141 |
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The table driven encode/decode methods can be generated from a character mapping document |
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as found on the unicode consortium host |
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(for example: 'http://www.unicode.org/Public/MAPPINGS/ISO8859/8859-1.TXT') |
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|
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or from the i18n character maps: |
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(for example: 'http://std.dkuug.dk/i18n/charmaps/ISO-8859-1 |
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In order to add another coder (for example: for EBCDIC or ms-codePage 278), |
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perform the following steps: |
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- create a public subclass of CharacterEncoderImplementations::CharacterEncoderImplementation named (for example) CharacterEncoderImplementations::CP267. |
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|
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- define the mappingURL1_relativeName (if the table is found on 'www.unicode.org') |
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or the mappingURL2_relativeName (if it is found on 'std.dkuug.dk') method, which |
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should return the name of the tables file, relative to the top directory there |
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(which is '.../Public/MAPPINGS' on www.unicode.org and '.../i18n/charmaops' on 'std.dkuug.dk'. |
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In this example, the table from 'std.dkuug.dk' is used, and named 'EBCDIC-CP-FI' there. |
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|
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- generate code by evaluating (make sure that CharacterEncoderGenerator is loaded from stx:goodies): |
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CharacterEncoder::CP267 generateCode |
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|
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Thats all !! |
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|
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|
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The existing code was generated by: |
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CharacterEncoder::SingleByteEncoder subclassesDo:[:cls | Transcript showCR:cls name. cls flushCode; generateCode ] |
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CharacterEncoder::SingleByteEncoder subclassesDo:[:cls | cls allSubclassesDo:[:sub | Transcript showCR:sub name. sub flushCode; generateSubclassCode]] |
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or individually: |
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CharacterEncoder::ASCII flushCode; generateCode. |
173 |
CharacterEncoder::ISO8859_1 flushCode; generateCode. |
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CharacterEncoder::ISO8859_2 flushCode; generateCode. |
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CharacterEncoder::ISO8859_3 flushCode; generateCode. |
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CharacterEncoder::ISO8859_4 flushCode; generateCode. |
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CharacterEncoder::ISO8859_5 flushCode; generateCode. |
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CharacterEncoder::ISO8859_6 flushCode; generateCode. |
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CharacterEncoder::ISO8859_7 flushCode; generateCode. |
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CharacterEncoder::ISO8859_8 flushCode; generateCode. |
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CharacterEncoder::ISO8859_9 flushCode; generateCode. |
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CharacterEncoder::ISO8859_10 flushCode; generateCode. |
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CharacterEncoder::ISO8859_11 flushCode; generateCode. |
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CharacterEncoder::ISO8859_13 flushCode; generateCode. |
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CharacterEncoder::ISO8859_14 flushCode; generateCode. |
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186 |
CharacterEncoder::ISO8859_15 flushCode; generateCode. |
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187 |
CharacterEncoder::ISO8859_16 flushCode; generateCode. |
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CharacterEncoder::KOI8_R flushCode; generateCode. |
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189 |
CharacterEncoder::GSM0338 flushCode; generateCode. |
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CharacterEncoder::KOI8_U flushCode; generateSubclassCode. |
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|
9143 | 193 |
CharacterEncoder::JIS0208 flushCode; generateCode. |
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Please check if your encoder tables are complete; for example, with: |
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0 to:255 do:[:ebc | |
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|asc ebc2| |
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|
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asc := CharacterEncoderImplementations::EBCDIC new decode:ebc. |
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asc notNil ifTrue:[ |
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ebc2 := CharacterEncoderImplementations::EBCDIC new encode:asc. |
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self assert:(ebc2 = ebc) |
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]. |
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]. |
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|
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0 to:255 do:[:asc | |
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|ebc asc2| |
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|
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ebc := CharacterEncoderImplementations::EBCDIC new encode:asc. |
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ebc notNil ifTrue:[ |
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asc2 := CharacterEncoderImplementations::EBCDIC new decode:ebc. |
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self assert:(asc2 = asc) |
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]. |
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]. |
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" |
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! ! |
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217 |
|
7971 | 218 |
!CharacterEncoder class methodsFor:'instance creation'! |
219 |
||
220 |
encoderFor:encodingNameSymbol |
|
221 |
"given the name of an encoding, return an encoder-instance which can map these from/into unicode." |
|
222 |
||
223 |
^ self |
|
8156 | 224 |
encoderFor:encodingNameSymbol |
225 |
ifAbsent:[ |
|
226 |
"/ proceed to ignore this error in the future. |
|
8352
20d2476f538e
add nullEncoder BEFORE raising an error
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8262
diff
changeset
|
227 |
|
16054 | 228 |
"/ (EncodersByName at:#unicode) at:encodingNameSymbol put:NullEncoderInstance. |
229 |
"/ (EncoderClassesByName at:#unicode) at:encodingNameSymbol put:NullEncoder. |
|
8352
20d2476f538e
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parents:
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diff
changeset
|
230 |
|
8388
b5cf7abdfe64
no encoder: send a message to stdError instead of entering
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
231 |
"/ self error:'no encoder for ' , encodingNameSymbol mayProceed:true. |
17520 | 232 |
('CharacterEncoder [warning]: no encoder for "' , encodingNameSymbol,'"') infoPrintCR. |
8388
b5cf7abdfe64
no encoder: send a message to stdError instead of entering
Claus Gittinger <cg@exept.de>
parents:
8352
diff
changeset
|
233 |
|
8156 | 234 |
NullEncoderInstance |
235 |
] |
|
7971 | 236 |
|
237 |
" |
|
8388
b5cf7abdfe64
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parents:
8352
diff
changeset
|
238 |
CharacterEncoder encoderFor:#'blabla2' |
7971 | 239 |
CharacterEncoder encoderFor:#'latin1' |
240 |
self encoderFor:#'arabic' |
|
241 |
self encoderFor:#'ms-arabic' |
|
8814 | 242 |
self encoderFor:#'cp1250' |
243 |
self encoderFor:#'cp1251' |
|
244 |
self encoderFor:#'cp1252' |
|
245 |
self encoderFor:#'cp1253' |
|
7971 | 246 |
self encoderFor:#'iso8859-5' |
247 |
self encoderFor:#'koi8-r' |
|
248 |
self encoderFor:#'koi8-u' |
|
249 |
self encoderFor:#'jis0208' |
|
250 |
self encoderFor:#'jis7' |
|
8087
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parents:
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diff
changeset
|
251 |
self encoderFor:#'utf8' |
14169
eab487f07a2b
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parents:
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diff
changeset
|
252 |
(self encoderFor:#'utf16le') encodeString:'hello' |
eab487f07a2b
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changeset
|
253 |
(self encoderFor:#'utf16le') encode:5 |
eab487f07a2b
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changeset
|
254 |
(self encoderFor:#'utf16be') encodeString:'hello' |
eab487f07a2b
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changeset
|
255 |
(self encoderFor:#'utf16be') encode:5 |
eab487f07a2b
comment/format in: #encoderFor:
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parents:
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diff
changeset
|
256 |
(self encoderFor:#'utf32le') encodeString:'hello' |
eab487f07a2b
comment/format in: #encoderFor:
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parents:
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diff
changeset
|
257 |
(self encoderFor:#'utf32be') encodeString:'hello' |
10111 | 258 |
self encoderFor:#'sgml' |
259 |
self encoderFor:#'java' |
|
7971 | 260 |
" |
10111 | 261 |
|
14207 | 262 |
"Modified: / 12-07-2012 / 19:35:43 / cg" |
7971 | 263 |
! |
264 |
||
8168 | 265 |
encoderFor:encodingNameSymbolArg ifAbsent:exceptionValue |
7971 | 266 |
"given the name of an encoding, return an encoder-instance which can map these from/into unicode." |
267 |
||
8168 | 268 |
|encodingNameSymbol enc clsName cls lcName name unicodeEncoders unicodeEncoderClasses| |
8118 | 269 |
|
8168 | 270 |
encodingNameSymbol := encodingNameSymbolArg. |
8118 | 271 |
encodingNameSymbol isNil ifTrue:[ ^ NullEncoderInstance]. |
7972 | 272 |
|
16054 | 273 |
encodingNameSymbol = 'iso10646-1' ifTrue:[ encodingNameSymbol := #unicode]. |
8168 | 274 |
|
8118 | 275 |
lcName := encodingNameSymbol asLowercase. |
276 |
name := lcName asSymbolIfInterned. |
|
277 |
name isNil ifTrue:[name := lcName]. |
|
8052 | 278 |
|
8118 | 279 |
name includesMatchCharacters ifTrue:[ |
8262
550c67712dfa
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parents:
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diff
changeset
|
280 |
AccessLock critical:[ |
550c67712dfa
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parents:
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diff
changeset
|
281 |
unicodeEncoders := EncodersByName at:#unicode ifAbsent:nil. |
550c67712dfa
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parents:
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diff
changeset
|
282 |
]. |
8155 | 283 |
unicodeEncoders notNil ifTrue:[ |
284 |
unicodeEncoders keysAndValuesDo:[:eachEncodingAlias :eachEncoderInstance | |
|
285 |
(name matches:eachEncodingAlias) ifTrue:[ |
|
286 |
^ eachEncoderInstance. |
|
287 |
]. |
|
288 |
]. |
|
289 |
]. |
|
8118 | 290 |
|
8262
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parents:
8261
diff
changeset
|
291 |
AccessLock critical:[ |
550c67712dfa
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parents:
8261
diff
changeset
|
292 |
unicodeEncoderClasses := EncoderClassesByName at:#unicode. |
550c67712dfa
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parents:
8261
diff
changeset
|
293 |
]. |
8155 | 294 |
unicodeEncoderClasses notNil ifTrue:[ |
295 |
unicodeEncoderClasses keysAndValuesDo:[:eachEncodingAlias :eachEncoderClassOrName | |
|
296 |
(name matches:eachEncodingAlias) ifTrue:[ |
|
297 |
eachEncoderClassOrName isBehavior ifTrue:[ |
|
8194 | 298 |
cls := eachEncoderClassOrName |
299 |
] ifFalse:[ |
|
300 |
cls := CharacterEncoderImplementations at:eachEncoderClassOrName. |
|
8155 | 301 |
]. |
302 |
cls notNil ifTrue:[ |
|
303 |
^ cls new. |
|
304 |
] |
|
305 |
]. |
|
306 |
]. |
|
307 |
]. |
|
308 |
^ exceptionValue value |
|
7972 | 309 |
]. |
7971 | 310 |
|
8118 | 311 |
AccessLock critical:[ |
8155 | 312 |
unicodeEncoders := EncodersByName at:#unicode ifAbsent:nil. |
313 |
unicodeEncoders isNil ifTrue:[ |
|
314 |
EncodersByName at:#unicode put:(unicodeEncoders := Dictionary new). |
|
315 |
]. |
|
316 |
enc := unicodeEncoders at:name ifAbsent:nil. |
|
8262
550c67712dfa
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Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
317 |
]. |
550c67712dfa
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parents:
8261
diff
changeset
|
318 |
enc isNil ifTrue:[ |
550c67712dfa
do not autoload while in accesslock (deadlock)
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parents:
8261
diff
changeset
|
319 |
AccessLock critical:[ |
8155 | 320 |
unicodeEncoderClasses := EncoderClassesByName at:#unicode ifAbsent:nil. |
321 |
unicodeEncoderClasses isNil ifTrue:[ |
|
322 |
EncoderClassesByName at:#unicode put:(unicodeEncoderClasses := Dictionary new). |
|
323 |
]. |
|
324 |
clsName := unicodeEncoderClasses at:name ifAbsent:nil. |
|
8262
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
325 |
]. |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
326 |
clsName notNil ifTrue:[ |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
327 |
clsName isBehavior ifTrue:[ |
550c67712dfa
do not autoload while in accesslock (deadlock)
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parents:
8261
diff
changeset
|
328 |
cls := clsName |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
329 |
] ifFalse:[ |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
330 |
cls := CharacterEncoderImplementations at:clsName. |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
331 |
]. |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
332 |
cls notNil ifTrue:[ |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
333 |
enc := cls new. |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
334 |
AccessLock critical:[ |
8155 | 335 |
unicodeEncoders at:name put:enc. |
336 |
] |
|
337 |
]. |
|
338 |
]. |
|
7973 | 339 |
]. |
8262
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
340 |
|
8118 | 341 |
enc notNil ifTrue:[ |
8155 | 342 |
^ enc |
7973 | 343 |
]. |
7971 | 344 |
|
8118 | 345 |
"/ no direct encoder from unicode->name |
346 |
"/ search for unicode->any and: any->name |
|
8262
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
347 |
AccessLock critical:[ |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
348 |
unicodeEncoderClasses := EncoderClassesByName at:#unicode ifAbsent:nil. |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
349 |
]. |
8118 | 350 |
unicodeEncoderClasses keysAndValuesDo:[:eachEncodingAlias :eachEncoderClass | |
8155 | 351 |
|dict2 enc1 enc2| |
8118 | 352 |
|
8262
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
353 |
AccessLock critical:[ |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
354 |
dict2 := EncoderClassesByName at:eachEncodingAlias ifAbsent:nil. |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
355 |
]. |
8155 | 356 |
dict2 notNil ifTrue:[ |
357 |
clsName := dict2 at:name ifAbsent:nil. |
|
358 |
clsName notNil ifTrue:[ |
|
359 |
clsName isBehavior ifTrue:[ |
|
8194 | 360 |
cls := clsName |
8155 | 361 |
] ifFalse:[ |
362 |
cls := CharacterEncoderImplementations at:clsName. |
|
363 |
]. |
|
364 |
cls notNil ifTrue:[ |
|
365 |
enc2 := cls new. |
|
366 |
enc1 := self encoderFor:eachEncodingAlias. |
|
367 |
(enc1 notNil and:[enc2 notNil]) ifTrue:[ |
|
368 |
enc := TwoStepEncoder new encoder1:enc1 encoder2:enc2. |
|
369 |
AccessLock critical:[ |
|
370 |
unicodeEncoders at:name put:enc. |
|
371 |
]. |
|
372 |
^ enc. |
|
373 |
] |
|
374 |
] |
|
375 |
] |
|
376 |
]. |
|
7971 | 377 |
]. |
378 |
||
8194 | 379 |
EncoderClassesByName keysAndValuesDo:[:encoding1 :dict1 | |
380 |
dict1 keysAndValuesDo:[:encoding2 :clsName1| |
|
381 |
|clsName2 cls1 cls2 dict2 enc1 enc2| |
|
382 |
||
383 |
encoding2 = encodingNameSymbol ifTrue:[ |
|
8262
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
384 |
AccessLock critical:[ |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
385 |
dict2 := EncoderClassesByName at:#unicode. |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
386 |
]. |
8194 | 387 |
clsName2 := dict2 at:encoding1 ifAbsent:nil. |
388 |
clsName2 notNil ifTrue:[ |
|
389 |
clsName1 isBehavior ifTrue:[ |
|
390 |
cls1 := clsName1 |
|
391 |
] ifFalse:[ |
|
392 |
cls1 := CharacterEncoderImplementations at:clsName1. |
|
393 |
]. |
|
394 |
clsName2 isBehavior ifTrue:[ |
|
395 |
cls2 := clsName2 |
|
396 |
] ifFalse:[ |
|
397 |
cls2 := CharacterEncoderImplementations at:clsName2. |
|
398 |
]. |
|
399 |
(cls1 notNil and:[cls2 notNil]) ifTrue:[ |
|
14207 | 400 |
enc1 := cls1 new. |
401 |
enc2 := cls2 new. |
|
8194 | 402 |
enc := TwoStepEncoder new encoder1:enc1 encoder2:enc2. |
403 |
^ enc. |
|
404 |
]. |
|
405 |
] |
|
406 |
] |
|
407 |
] |
|
408 |
]. |
|
409 |
||
7971 | 410 |
^ exceptionValue value |
411 |
||
412 |
" |
|
413 |
CharacterEncoder encoderFor:#'latin1' |
|
7972 | 414 |
self encoderFor:#'arabic' |
415 |
self encoderFor:#'ms-arabic' |
|
416 |
self encoderFor:#'iso8859-5' |
|
7971 | 417 |
self encoderFor:#'koi8-r' |
418 |
self encoderFor:#'koi8-u' |
|
419 |
self encoderFor:#'jis0208' |
|
420 |
self encoderFor:#'jis7' |
|
7972 | 421 |
self encoderFor:#'unicode' |
17520 | 422 |
self encoderFor:#'UTF-8' |
423 |
self encoderFor:'UTF-8' |
|
7971 | 424 |
" |
14207 | 425 |
|
426 |
"Modified: / 12-07-2012 / 19:45:58 / cg" |
|
7971 | 427 |
! |
428 |
||
8210 | 429 |
encoderForUTF8 |
8211 | 430 |
"return an encoder-instance which can map unicode into/from utf8" |
431 |
||
8210 | 432 |
^ self encoderFor:#utf8 |
433 |
||
434 |
" |
|
435 |
CharacterEncoder encoderFor:#'latin1' |
|
436 |
self encoderFor:#'arabic' |
|
437 |
self encoderFor:#'ms-arabic' |
|
438 |
self encoderFor:#'iso8859-5' |
|
439 |
self encoderFor:#'koi8-r' |
|
440 |
self encoderFor:#'koi8-u' |
|
441 |
self encoderFor:#'jis0208' |
|
442 |
self encoderFor:#'jis7' |
|
443 |
self encoderFor:#'utf8' |
|
444 |
self encoderForUTF8' |
|
445 |
" |
|
446 |
! |
|
447 |
||
7971 | 448 |
encoderToEncodeFrom:oldEncodingArg into:newEncodingArg |
8135 | 449 |
|oldEncoding newEncoding encoders encoderClasses encoder decoder clsName cls| |
8118 | 450 |
|
14169
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
451 |
oldEncoding := oldEncodingArg ? #unicode. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
452 |
oldEncoding == #'iso10646-1' ifTrue:[ oldEncoding := #unicode]. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
453 |
newEncoding := newEncodingArg ? #unicode. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
454 |
newEncoding == #'iso10646-1' ifTrue:[ newEncoding := #unicode]. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
455 |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
456 |
oldEncoding = newEncoding ifTrue:[^ NullEncoderInstance]. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
457 |
(oldEncoding match:newEncoding) ifTrue:[^ NullEncoderInstance]. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
458 |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
459 |
(oldEncoding = #unicode) ifTrue:[ |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
460 |
"/ something -> unicode |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
461 |
^ self encoderFor:newEncoding. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
462 |
]. |
7972 | 463 |
|
8261 | 464 |
oldEncoding isSymbol ifFalse:[oldEncoding := oldEncoding asSymbol]. |
465 |
newEncoding isSymbol ifFalse:[newEncoding := newEncoding asSymbol]. |
|
8120 | 466 |
|
8118 | 467 |
AccessLock critical:[ |
8155 | 468 |
encoders := EncodersByName at:oldEncoding ifAbsent:nil. |
469 |
encoders isNil ifTrue:[ |
|
470 |
EncodersByName at:oldEncoding put:(encoders := Dictionary new). |
|
471 |
]. |
|
472 |
encoder := encoders at:newEncodingArg ifAbsent:nil. |
|
473 |
encoder isNil ifTrue:[ |
|
474 |
encoderClasses := EncoderClassesByName at:oldEncoding ifAbsent:nil. |
|
475 |
encoderClasses isNil ifTrue:[ |
|
476 |
EncoderClassesByName at:oldEncoding put:(encoderClasses := Dictionary new). |
|
477 |
]. |
|
478 |
clsName := encoderClasses at:newEncoding ifAbsent:nil. |
|
479 |
clsName notNil ifTrue:[ |
|
480 |
clsName isBehavior ifTrue:[ |
|
8262
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
481 |
cls := clsName |
8155 | 482 |
] ifFalse:[ |
483 |
cls := CharacterEncoderImplementations at:clsName. |
|
484 |
] |
|
485 |
]. |
|
486 |
]. |
|
7971 | 487 |
]. |
8262
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
488 |
cls notNil ifTrue:[ |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
489 |
encoder := cls new. |
550c67712dfa
do not autoload while in accesslock (deadlock)
Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
490 |
]. |
7971 | 491 |
|
8118 | 492 |
encoder isNil ifTrue:[ |
8155 | 493 |
(newEncoding == #unicode) ifTrue:[ |
494 |
"/ something -> unicode |
|
495 |
decoder := self encoderFor:oldEncoding. |
|
496 |
encoder := InverseEncoder new decoder:decoder. |
|
497 |
] ifFalse:[ |
|
498 |
"/ do it as: oldEncoding -> unicode -> newEncoding |
|
7972 | 499 |
|
8155 | 500 |
"/ something -> unicode |
501 |
decoder := self encoderFor:oldEncoding. |
|
7972 | 502 |
|
8155 | 503 |
"/ unicode -> something |
504 |
encoder := self encoderFor:newEncoding. |
|
505 |
encoder := CompoundEncoder new encoder:encoder decoder:decoder. |
|
506 |
]. |
|
7971 | 507 |
]. |
508 |
||
8118 | 509 |
AccessLock critical:[ |
8155 | 510 |
(EncodersByName at:oldEncoding) at:newEncoding put:encoder |
8118 | 511 |
]. |
512 |
^ encoder |
|
7971 | 513 |
|
8118 | 514 |
" CharacterEncoder initialize |
7972 | 515 |
CharacterEncoder encoderToEncodeFrom:#'latin1' into:#'jis7' |
8118 | 516 |
CharacterEncoder encoderToEncodeFrom:#'koi8-r' into:#'mac-cyrillic' |
8087
0a2ee76bcf55
last version before separating into extra classes
Claus Gittinger <cg@exept.de>
parents:
8062
diff
changeset
|
517 |
CharacterEncoder encoderToEncodeFrom:#'ms-arabic' into:#'mac-arabic' |
0a2ee76bcf55
last version before separating into extra classes
Claus Gittinger <cg@exept.de>
parents:
8062
diff
changeset
|
518 |
CharacterEncoder encoderToEncodeFrom:#'iso8859-5' into:#'koi8-r' |
0a2ee76bcf55
last version before separating into extra classes
Claus Gittinger <cg@exept.de>
parents:
8062
diff
changeset
|
519 |
CharacterEncoder encoderToEncodeFrom:#'koi8-r' into:#'koi8-u' |
7971 | 520 |
" |
14207 | 521 |
|
522 |
"Modified: / 12-07-2012 / 19:45:15 / cg" |
|
7971 | 523 |
! ! |
524 |
||
7932 | 525 |
!CharacterEncoder class methodsFor:'Compatibility-ST80'! |
526 |
||
527 |
encoderNamed: encoderName |
|
528 |
"/ q & d hack |
|
529 |
||
530 |
encoderName == #default ifTrue:[ |
|
11262
5de131eaba9e
changed #classMenuCompareTwoRepositoryVersions
Claus Gittinger <cg@exept.de>
parents:
11228
diff
changeset
|
531 |
^ DefaultEncoder new |
7932 | 532 |
]. |
11262
5de131eaba9e
changed #classMenuCompareTwoRepositoryVersions
Claus Gittinger <cg@exept.de>
parents:
11228
diff
changeset
|
533 |
self halt:'should not be reached'. |
7932 | 534 |
^ self new |
535 |
! |
|
536 |
||
537 |
platformName |
|
538 |
^ OperatingSystem platformName |
|
539 |
||
540 |
"Created: 20.6.1997 / 17:34:03 / cg" |
|
541 |
"Modified: 20.6.1997 / 17:38:40 / cg" |
|
542 |
! ! |
|
543 |
||
11316
0b2757774461
access method #nullEncoderInstance
Stefan Vogel <sv@exept.de>
parents:
11300
diff
changeset
|
544 |
!CharacterEncoder class methodsFor:'accessing'! |
0b2757774461
access method #nullEncoderInstance
Stefan Vogel <sv@exept.de>
parents:
11300
diff
changeset
|
545 |
|
0b2757774461
access method #nullEncoderInstance
Stefan Vogel <sv@exept.de>
parents:
11300
diff
changeset
|
546 |
nullEncoderInstance |
0b2757774461
access method #nullEncoderInstance
Stefan Vogel <sv@exept.de>
parents:
11300
diff
changeset
|
547 |
^ NullEncoderInstance |
0b2757774461
access method #nullEncoderInstance
Stefan Vogel <sv@exept.de>
parents:
11300
diff
changeset
|
548 |
! ! |
0b2757774461
access method #nullEncoderInstance
Stefan Vogel <sv@exept.de>
parents:
11300
diff
changeset
|
549 |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
550 |
!CharacterEncoder class methodsFor:'class initialization'! |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
551 |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
552 |
initialize |
8154 | 553 |
|ud| |
554 |
||
17529 | 555 |
AccessLock notNil ifTrue:[^ self]. "/ already initialized |
556 |
||
14777
a669080229da
add user friendly name to semaphores
Stefan Vogel <sv@exept.de>
parents:
14559
diff
changeset
|
557 |
AccessLock := RecursionLock new name:'CharacterEncoder'. |
8118 | 558 |
NullEncoderInstance := NullEncoder new. |
7973 | 559 |
|
8126 | 560 |
EncodersByName := Dictionary new. |
561 |
EncoderClassesByName := Dictionary new. |
|
562 |
CachedEncoders := Dictionary new. |
|
7972 | 563 |
|
8154 | 564 |
EncoderClassesByName at:#'unicode' put:(ud := Dictionary new). |
565 |
ud at:#'fontspecific' put:NullEncoder. |
|
566 |
ud at:#'adobe-fontspecific' put:NullEncoder. |
|
8190 | 567 |
ud at:#'ms-oem' put:NullEncoder. |
13326 | 568 |
ud at:#'ms-default' put:NullEncoder. |
8152 | 569 |
|
17491 | 570 |
"/ className decoded-name array-of-encodingNames |
8118 | 571 |
#( |
15966 | 572 |
(ASCII unicode ( ascii 'us-ascii' 'iso-ir-6' 'ibm-367' 'ms-cp367' 'cp367' 'iso646-us' 'ibm-cp367' 'ansi_x3.4-1968' )) |
8118 | 573 |
|
8151 | 574 |
(BIG5 unicode ( big5 )) |
8118 | 575 |
|
8151 | 576 |
(CNS11643 unicode ( 'cns11643' )) |
8118 | 577 |
|
8151 | 578 |
(CP437 unicode ( 'cp437' 'cp-437' 'ibm-437' 'ms-cp437' 'microsoft-cp437' 'ibm-cp437' )) |
8118 | 579 |
|
13063
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
580 |
(EBCDIC unicode ( 'ebcdic' )) |
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
581 |
|
16054 | 582 |
"/ (GB2313_1980 unicode ( 'gb2313' 'gb2313-1980' )) |
583 |
||
584 |
(GB2312_1980_0 unicode ( 'gb2312' 'gb2312.1980' 'gb2312.1980-0')) |
|
8118 | 585 |
|
8151 | 586 |
(HANGUL unicode ( 'hangul' )) |
8118 | 587 |
|
8151 | 588 |
(ISO10646_1 unicode ( unicode 'iso10646_1' 'iso10646-1' 'iso-10646-1' )) |
8118 | 589 |
|
17491 | 590 |
(ISO10646_to_UTF8 unicode ( utf8 'utf-8' )) |
591 |
(ISO10646_to_UTF16BE unicode ( utf16b utf16be 'utf-16b' 'utf-16be' )) |
|
592 |
(ISO10646_to_UTF16LE unicode ( utf16l utf16le 'utf-16e' 'utf-16le' )) |
|
593 |
||
17495 | 594 |
(ISO10646_to_UTF8_MAC unicode ( 'utf8-mac' 'utf-8-mac' )) |
17498 | 595 |
(ISO10646_to_XMLUTF8 unicode ( 'utf8-XML' )) |
8118 | 596 |
|
8855
289b5bda04bb
guessEncoding - return the real encodings name
Claus Gittinger <cg@exept.de>
parents:
8814
diff
changeset
|
597 |
(ISO8859_1 unicode ( 'iso8859_1' 'iso8859-1' 'iso-8859-1' 'latin-1' 'latin1' 'iso-ir-100' 'ibm-819' 'ms-cp819' 'ibm-cp819' 'iso8859')) |
8118 | 598 |
|
8151 | 599 |
(ISO8859_2 unicode ( 'iso8859_2' 'iso8859-2' 'iso-8859-2' 'latin2' 'latin-2' 'iso-ir-101')) |
8118 | 600 |
|
8151 | 601 |
(ISO8859_3 unicode ( 'iso8859_3' 'iso8859-3' 'iso-8859-3' 'latin3' 'latin-3' 'iso-ir-109')) |
8118 | 602 |
|
8151 | 603 |
(ISO8859_4 unicode ( 'iso8859_4' 'iso8859-4' 'iso-8859-4' 'latin4' 'latin-4' 'iso-ir-110')) |
8118 | 604 |
|
8151 | 605 |
(ISO8859_5 unicode ( 'iso8859_5' 'iso8859-5' 'iso-8859-5' 'cyrillic' 'iso-ir-144' )) |
8118 | 606 |
|
8151 | 607 |
(ISO8859_6 unicode ( 'iso8859_6' 'iso8859-6' 'iso-8859-6' 'arabic' 'asmo-708' 'ecma-114' 'iso-ir-127' )) |
8118 | 608 |
|
8151 | 609 |
(ISO8859_7 unicode ( 'iso8859_7' 'iso8859-7' 'iso-8859-7' 'greek' 'iso-ir-126' 'ecma-118')) |
8118 | 610 |
|
8151 | 611 |
(ISO8859_8 unicode ( 'iso8859_8' 'iso8859-8' 'iso-8859-8' 'hebrew' 'iso-ir-138' )) |
8118 | 612 |
|
8151 | 613 |
(ISO8859_9 unicode ( 'iso8859_9' 'iso8859-9' 'iso-8859-9' 'latin5' 'latin-5' 'iso-ir-148')) |
8118 | 614 |
|
8151 | 615 |
(ISO8859_10 unicode ( 'iso8859_10' 'iso8859-10' 'iso-8859-10' 'latin6' 'latin-6' 'iso-ir-157')) |
8118 | 616 |
|
8151 | 617 |
(ISO8859_11 unicode ( 'iso8859_11' 'iso8859-11' 'iso-8859-11' 'thai' )) |
8118 | 618 |
|
8151 | 619 |
(ISO8859_13 unicode ( 'iso8859_13' 'iso8859-13' 'iso-8859-13' 'latin7' 'latin-7' )) |
8118 | 620 |
|
8151 | 621 |
(ISO8859_14 unicode ( 'iso8859_14' 'iso8859-14' 'iso-8859-14' 'latin8' 'latin-8' 'latin-celtic' )) |
8118 | 622 |
|
8151 | 623 |
(ISO8859_15 unicode ( 'iso8859_15' 'iso8859-15' 'iso-8859-15' 'latin9' 'latin-9' 'iso-ir-203')) |
8118 | 624 |
|
8151 | 625 |
(ISO8859_16 unicode ( 'iso8859_16' 'iso8859-16' 'iso-8859-16' 'latin10' 'latin-10' )) |
8118 | 626 |
|
8151 | 627 |
(JIS0201 unicode ( 'jis0201' #'jisx0201.1976-0')) |
8118 | 628 |
|
8151 | 629 |
(JIS0208 unicode ( jis0208 'jisx0208' 'jisx0208.1983-0' 'jisx0208.1990-0')) |
8118 | 630 |
|
8151 | 631 |
(JIS0208_to_JIS7 jis0208 ( jis7 'jis-7' 'x-jis7' 'x-iso2022-jp' 'iso2022-jp')) |
8118 | 632 |
|
8151 | 633 |
(JIS0208_to_EUC jis0208 ( euc #'x-euc-jp' )) |
8122 | 634 |
|
8176 | 635 |
(JIS0208_to_SJIS jis0208 ( 'sjis' 'shiftjis' 'x-sjis' #'x-shift-jis' #'shift-jis')) |
636 |
||
8151 | 637 |
(JIS0212 unicode ( 'jis0212' )) |
8118 | 638 |
|
8151 | 639 |
(JOHAB unicode ( 'johab' )) |
8118 | 640 |
|
8151 | 641 |
(KOI7 unicode ( 'koi7' )) |
8118 | 642 |
|
8151 | 643 |
(KOI8_R unicode ( #'koi8-r' 'cp878' )) |
8118 | 644 |
|
8151 | 645 |
(KOI8_U unicode ( #'koi8-u' )) |
8118 | 646 |
|
8151 | 647 |
(KSC5601 unicode ( #'ksc5601' )) |
8118 | 648 |
|
8151 | 649 |
(MAC_Arabic unicode ( #'mac-arabic' 'macarabic' )) |
8118 | 650 |
|
8151 | 651 |
(MAC_CentralEuropean unicode ( #'mac-centraleuropean' #'mac-centraleurope' 'maccentraleurope' 'maccentraleuropean' )) |
8118 | 652 |
|
8151 | 653 |
(MAC_Croatian unicode ( #'mac-croatian' 'maccroatian')) |
8118 | 654 |
|
8151 | 655 |
(MAC_Cyrillic unicode ( #'mac-cyrillic' 'maccyrillic' )) |
8118 | 656 |
|
8151 | 657 |
(MAC_Dingbats unicode ( #'mac-dingbats' 'macdingbats' 'macdingbat')) |
8118 | 658 |
|
8151 | 659 |
(MAC_Farsi unicode ( #'mac-farsi' 'macfarsi' )) |
8118 | 660 |
|
8151 | 661 |
(MAC_Greek unicode ( #'mac-greek' #'macgreek' )) |
8118 | 662 |
|
8151 | 663 |
(MAC_Hebrew unicode ( #'mac-hebrew' #'machebrew' )) |
8118 | 664 |
|
8151 | 665 |
(MAC_Iceland unicode ( #'mac-iceland' #'maciceland' )) |
8118 | 666 |
|
8151 | 667 |
(MAC_Japanese unicode ( #'mac-japanese' #'macjapanese' )) |
8118 | 668 |
|
8151 | 669 |
(MAC_Korean unicode ( #'mac-korean' #'mackorean' )) |
8118 | 670 |
|
16522 | 671 |
(MAC_Roman unicode ( #'mac-roman' #'macroman' 'macintosh' 'cp10000' )) |
8118 | 672 |
|
8151 | 673 |
(MAC_Romanian unicode ( #'mac-romanian' #'macromanian' )) |
8118 | 674 |
|
8151 | 675 |
(MAC_Symbol unicode ( #'mac-symbol' #'macsymbol' )) |
8118 | 676 |
|
8151 | 677 |
(MAC_Thai unicode ( #'mac-thai' #'macthai' )) |
8118 | 678 |
|
8151 | 679 |
(MAC_Turkish unicode ( #'mac-turkish' #'macturkish' )) |
8118 | 680 |
|
8151 | 681 |
(MS_Ansi unicode ( #'ms-ansi' 'ms-cp1252' 'microsoft-cp1252' 'cp1252' 'microsoft-ansi' 'windows-1252' 'windows-latin1')) |
8118 | 682 |
|
8151 | 683 |
(MS_Arabic unicode ( 'ms-arabic' 'ms-cp1256' 'microsoft-cp1256' 'cp1256' 'microsoft-arabic' 'windows-1256' )) |
8118 | 684 |
|
8151 | 685 |
(MS_Baltic unicode ( 'ms-baltic' 'ms-cp1257' 'microsoft-cp1257' 'cp1257' 'microsoft-baltic' 'windows-1257' )) |
8118 | 686 |
|
8151 | 687 |
(MS_Cyrillic unicode ( 'ms-cyrillic' 'ms-cp1251' 'microsoft-cp1251' 'cp1251' 'microsoft-cyrillic' 'windows-1251' )) |
8118 | 688 |
|
8151 | 689 |
(MS_EastEuropean unicode ( 'ms-easteuropean' 'ms-ee' 'cp1250' 'ms-cp1250' 'microsoft-cp1250' 'microsoft-easteuropean' 'windows-1250' )) |
8118 | 690 |
|
8151 | 691 |
(MS_Greek unicode ( 'ms-greek' 'ms-cp1253' 'microsoft-cp1253' 'cp1253' 'microsoft-greek' 'windows-1253' )) |
8118 | 692 |
|
8151 | 693 |
(MS_Hebrew unicode ( 'ms-hebrew' 'ms-cp1255' 'microsoft-cp1255' 'cp1255' 'microsoft-hebrew' 'windows-1255' )) |
8118 | 694 |
|
695 |
"/ (MS_Symbol unicode ( 'ms-symbol' 'microsoft-symbol' )) |
|
696 |
||
8151 | 697 |
(MS_Turkish unicode ( 'ms-turkish' 'ms-cp1254' 'microsoft-cp1254' 'cp1254' 'microsoft-turkish' 'windows-1254' )) |
8118 | 698 |
|
8151 | 699 |
(NEXT unicode ( 'next' 'nextstep' )) |
8186 | 700 |
|
10111 | 701 |
(ISO10646_to_SGML unicode ( 'sgml' )) |
702 |
(ISO10646_to_JavaText unicode ( 'java' 'javaText' )) |
|
8118 | 703 |
) triplesDo:[:className :decodesTo :encodesTo | |
8151 | 704 |
|dict| |
8134 | 705 |
|
8151 | 706 |
"/ notice that the encoders are not yet installed as autoloaded. |
707 |
"/ Therefore, we remember their names here. |
|
708 |
dict := EncoderClassesByName at:decodesTo ifAbsent:nil. |
|
709 |
dict isNil ifTrue:[ |
|
710 |
EncoderClassesByName at:decodesTo put:(dict := Dictionary new). |
|
711 |
]. |
|
712 |
encodesTo do:[:eachEncodingAlias | |
|
713 |
(dict includesKey:eachEncodingAlias) ifTrue:[ |
|
714 |
self halt:'conflicting alias' |
|
715 |
]. |
|
716 |
dict at:eachEncodingAlias put:className. |
|
717 |
]. |
|
8118 | 718 |
]. |
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
719 |
|
15966 | 720 |
OperatingSystem isUNIXlike ifTrue:[ |
721 |
"/Initialize OS system encoder |
|
722 |
OperatingSystem getCodesetEncoder. |
|
723 |
]. |
|
724 |
||
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
725 |
" |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
726 |
self initialize |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
727 |
" |
10111 | 728 |
|
13326 | 729 |
"Modified: / 01-04-2011 / 14:30:06 / cg" |
15966 | 730 |
"Modified (format): / 23-01-2013 / 09:56:53 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
7892 | 731 |
! ! |
732 |
||
8122 | 733 |
!CharacterEncoder class methodsFor:'constants'! |
734 |
||
735 |
jis7KanjiEscapeSequence |
|
736 |
"return the escape sequence used to switch to kanji in jis7 encoded strings. |
|
737 |
This happens to be the same as ISO2022-JP's escape sequence." |
|
738 |
||
739 |
Jis7KanjiEscapeSequence isNil ifTrue:[ |
|
14209 | 740 |
Jis7KanjiEscapeSequence := Character esc asString , '$B'. |
8122 | 741 |
]. |
742 |
^ Jis7KanjiEscapeSequence. |
|
743 |
||
744 |
"Created: 26.2.1996 / 17:38:08 / cg" |
|
745 |
"Modified: 30.6.1997 / 16:03:16 / cg" |
|
746 |
! |
|
747 |
||
748 |
jis7KanjiOldEscapeSequence |
|
749 |
"return the escape sequence used to switch to kanji in some old jis7 encoded strings." |
|
750 |
||
751 |
Jis7KanjiOldEscapeSequence isNil ifTrue:[ |
|
8856 | 752 |
Jis7KanjiOldEscapeSequence := Character esc asString , '$@'. |
8122 | 753 |
]. |
754 |
^ Jis7KanjiOldEscapeSequence. |
|
755 |
! |
|
756 |
||
757 |
jis7RomanEscapeSequence |
|
758 |
"return the escape sequence used to switch to roman in jis7 encoded strings" |
|
759 |
||
760 |
Jis7RomanEscapeSequence isNil ifTrue:[ |
|
14209 | 761 |
Jis7RomanEscapeSequence := Character esc asString , '(J'. |
8122 | 762 |
]. |
763 |
^ Jis7RomanEscapeSequence. |
|
764 |
||
765 |
"Created: 26.2.1996 / 17:38:08 / cg" |
|
766 |
"Modified: 30.6.1997 / 16:03:16 / cg" |
|
767 |
! |
|
768 |
||
769 |
jisISO2022EscapeSequence |
|
770 |
"return the escape sequence used to switch to kanji in iso2022 encoded strings" |
|
771 |
||
772 |
JisISO2022EscapeSequence isNil ifTrue:[ |
|
14209 | 773 |
JisISO2022EscapeSequence := Character esc asString , '&@' , Character esc asString , '$B'. |
8122 | 774 |
]. |
775 |
^ JisISO2022EscapeSequence. |
|
776 |
! ! |
|
777 |
||
7892 | 778 |
!CharacterEncoder class methodsFor:'encoding & decoding'! |
779 |
||
780 |
decode:aCodePoint |
|
781 |
^ self new decode:aCodePoint |
|
782 |
! |
|
783 |
||
784 |
decodeString:aString |
|
785 |
^ self new decodeString:aString |
|
786 |
! |
|
787 |
||
7972 | 788 |
decodeString:aString from:oldEncoding |
8016 | 789 |
^ self encodeString:aString from:oldEncoding into:#'unicode' |
7967 | 790 |
! |
791 |
||
7892 | 792 |
encode:aCodePoint |
793 |
^ self new encode:aCodePoint |
|
794 |
||
795 |
" |
|
796 |
ISO8859_1 encode:16r00FF |
|
797 |
ISO8859_1 decodeString:'hello' |
|
798 |
ISO8859_1 encodeString:(ISO8859_1 decodeString:'hello') |
|
799 |
||
800 |
ISO8859_5 decodeString:(String |
|
14209 | 801 |
with:(Character value:16rE4) |
802 |
with:(Character value:16rE0)) |
|
7892 | 803 |
" |
804 |
! |
|
805 |
||
7994 | 806 |
encode:codePoint from:oldEncodingArg into:newEncodingArg |
8015 | 807 |
|oldEncoding newEncoding encoder| |
7994 | 808 |
|
809 |
oldEncoding := oldEncodingArg ? #'unicode'. |
|
810 |
oldEncoding == #'iso10646-1' ifTrue:[ oldEncoding := #'unicode']. |
|
811 |
newEncoding := newEncodingArg ? #'unicode'. |
|
812 |
newEncoding == #'iso10646-1' ifTrue:[ newEncoding := #'unicode']. |
|
813 |
||
814 |
oldEncoding == newEncoding ifTrue:[^ codePoint]. |
|
815 |
||
8016 | 816 |
oldEncoding == #'unicode' ifTrue:[ |
14209 | 817 |
newEncoding == #'iso8859-1' ifTrue:[ |
818 |
codePoint <= 16rFF ifTrue:[ |
|
819 |
^ codePoint |
|
820 |
] |
|
821 |
] |
|
8016 | 822 |
]. |
823 |
newEncoding == #'unicode' ifTrue:[ |
|
14209 | 824 |
oldEncoding == #'iso8859-1' ifTrue:[ |
825 |
codePoint <= 16rFF ifTrue:[ |
|
826 |
^ codePoint |
|
827 |
] |
|
828 |
] |
|
8016 | 829 |
]. |
8118 | 830 |
encoder := self encoderToEncodeFrom:oldEncoding into:newEncoding. |
8015 | 831 |
^ encoder encode:codePoint. |
7994 | 832 |
! |
833 |
||
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
834 |
encodeString:aUnicodeString |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
835 |
"given a string in unicode, return a string in my encoding for it" |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
836 |
|
7912 | 837 |
^ self new encodeString:aUnicodeString |
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
838 |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
839 |
" |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
840 |
ISO8859_1 decodeString:'hello' |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
841 |
" |
7914 | 842 |
! |
843 |
||
7967 | 844 |
encodeString:aString from:oldEncodingArg into:newEncodingArg |
8015 | 845 |
|oldEncoding newEncoding encoder| |
7967 | 846 |
|
14916 | 847 |
"/ some hard coded aliases |
7967 | 848 |
oldEncoding := oldEncodingArg ? #'unicode'. |
7972 | 849 |
oldEncoding == #'iso10646-1' ifTrue:[ oldEncoding := #'unicode']. |
14916 | 850 |
oldEncoding == #'ms-default' ifTrue:[ oldEncoding := #'unicode']. |
851 |
||
7967 | 852 |
newEncoding := newEncodingArg ? #'unicode'. |
7972 | 853 |
newEncoding == #'iso10646-1' ifTrue:[ newEncoding := #'unicode']. |
14916 | 854 |
newEncoding == #'ms-default' ifTrue:[ newEncoding := #'unicode']. |
7972 | 855 |
|
7967 | 856 |
oldEncoding == newEncoding ifTrue:[^ aString]. |
857 |
||
14916 | 858 |
"/ for single-byte strings, iso8859-1 and unicode (up to FF) have the same encoding |
8016 | 859 |
oldEncoding == #'unicode' ifTrue:[ |
14916 | 860 |
(newEncoding == #'iso8859-1') ifTrue:[ |
14559 | 861 |
aString isWideString ifFalse:[ |
14209 | 862 |
^ aString |
863 |
] |
|
14916 | 864 |
]. |
8016 | 865 |
]. |
866 |
newEncoding == #'unicode' ifTrue:[ |
|
14916 | 867 |
(oldEncoding == #'iso8859-1') ifTrue:[ |
14559 | 868 |
aString isWideString ifFalse:[ |
14209 | 869 |
^ aString |
870 |
] |
|
871 |
] |
|
8016 | 872 |
]. |
873 |
||
8118 | 874 |
encoder := self encoderToEncodeFrom:oldEncoding into:newEncoding. |
8015 | 875 |
^ encoder encodeString:aString. |
7972 | 876 |
! |
877 |
||
878 |
encodeString:aString into:newEncoding |
|
8016 | 879 |
^ self encodeString:aString from:#'unicode' into:newEncoding |
13063
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
880 |
|
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
881 |
" |
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
882 |
self encodeString:'hello' into:#ebcdic |
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
883 |
|
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
884 |
self encodeString:(self encodeString:'hello' into:#ebcdic) from:#ebcdic into:#ascii |
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
885 |
self encodeString:(self encodeString:'hello' into:#ebcdic) from:#ebcdic into:#unicode |
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
886 |
" |
7892 | 887 |
! ! |
888 |
||
889 |
!CharacterEncoder class methodsFor:'private'! |
|
890 |
||
891 |
flushCode |
|
8127 | 892 |
self initialize. |
7914 | 893 |
|
7892 | 894 |
self isAbstract ifFalse:[ |
14209 | 895 |
(self mapFileURL1_relativePathName notNil |
896 |
or:[ self mapFileURL2_relativePathName notNil]) ifTrue:[ |
|
897 |
self class removeSelector:#mapping. |
|
898 |
]. |
|
7892 | 899 |
]. |
900 |
||
901 |
" |
|
902 |
self flushCode |
|
903 |
" |
|
904 |
! ! |
|
905 |
||
906 |
!CharacterEncoder class methodsFor:'private-mapping setup'! |
|
907 |
||
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
908 |
generateCode |
7909 | 909 |
(CharacterEncoderCodeGenerator new targetClass:self) generateCode. |
910 |
! |
|
911 |
||
912 |
generateSubclassCode |
|
913 |
(CharacterEncoderCodeGenerator new targetClass:self) generateSubclassCode. |
|
7892 | 914 |
! |
915 |
||
7914 | 916 |
mapFileURL1_codeColumn |
917 |
^ 1 |
|
918 |
! |
|
919 |
||
7912 | 920 |
mapFileURL1_relativePathName |
921 |
"raise an error: must be redefined in concrete subclass(es)" |
|
922 |
||
923 |
^ nil |
|
924 |
! |
|
925 |
||
926 |
mapFileURL2_relativePathName |
|
927 |
"raise an error: must be redefined in concrete subclass(es)" |
|
928 |
||
929 |
^ nil |
|
930 |
! |
|
931 |
||
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
932 |
mappingURL1 |
7892 | 933 |
"raise an error: must be redefined in concrete subclass(es)" |
7912 | 934 |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
935 |
|rel| |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
936 |
|
7912 | 937 |
rel := self mapFileURL1_relativePathName. |
938 |
rel isNil ifTrue:[ |
|
14209 | 939 |
^ nil |
7912 | 940 |
]. |
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
941 |
^ 'http://www.unicode.org/Public/MAPPINGS/' , rel |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
942 |
! |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
943 |
|
7892 | 944 |
mappingURL2 |
945 |
"raise an error: must be redefined in concrete subclass(es)" |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
946 |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
947 |
|rel| |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
948 |
|
7912 | 949 |
rel := self mapFileURL2_relativePathName. |
950 |
rel isNil ifTrue:[ |
|
14209 | 951 |
^ nil |
7912 | 952 |
]. |
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
953 |
^ 'http://std.dkuug.dk/i18n/charmaps/' , rel |
7892 | 954 |
! ! |
955 |
||
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
956 |
!CharacterEncoder class methodsFor:'queries'! |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
957 |
|
7938 | 958 |
isEncoding:subSetEncodingArg subSetOf:superSetEncodingArg |
7994 | 959 |
"return true, if superSetEncoding encoding includes all characters of subSetEncoding. |
960 |
(this means: characters are included - not that they have the same encoding)" |
|
7938 | 961 |
|
962 |
|subSetEncoding superSetEncoding| |
|
963 |
||
964 |
subSetEncodingArg = superSetEncodingArg ifTrue:[^ true]. |
|
965 |
subSetEncoding := subSetEncodingArg asLowercase. |
|
966 |
superSetEncoding := superSetEncodingArg asLowercase. |
|
967 |
||
968 |
(subSetEncoding match:superSetEncoding) ifTrue:[^ true]. |
|
969 |
||
8214
406c7fc10e12
assume ms-ansi is same as unicode
Claus Gittinger <cg@exept.de>
parents:
8211
diff
changeset
|
970 |
(('iso10646*' match:superSetEncoding) |
406c7fc10e12
assume ms-ansi is same as unicode
Claus Gittinger <cg@exept.de>
parents:
8211
diff
changeset
|
971 |
or:[superSetEncoding = 'unicode' |
406c7fc10e12
assume ms-ansi is same as unicode
Claus Gittinger <cg@exept.de>
parents:
8211
diff
changeset
|
972 |
or:[superSetEncoding = 'ms-ansi']]) ifTrue:[ |
406c7fc10e12
assume ms-ansi is same as unicode
Claus Gittinger <cg@exept.de>
parents:
8211
diff
changeset
|
973 |
"/ assume that any character is in unicode |
406c7fc10e12
assume ms-ansi is same as unicode
Claus Gittinger <cg@exept.de>
parents:
8211
diff
changeset
|
974 |
^ true. |
7938 | 975 |
]. |
976 |
||
977 |
"/ if the subSet is iso8859-*, that means ascii (i.e. the lower 7 bits of iso8859 only). |
|
978 |
((subSetEncoding = 'iso8859*') or:[subSetEncoding = 'iso8859-*']) ifTrue:[ |
|
8168 | 979 |
('ascii*' match:superSetEncoding) ifTrue:[^ true]. |
980 |
('ms-ansi*' match:superSetEncoding) ifTrue:[^ true]. |
|
7938 | 981 |
]. |
982 |
(subSetEncoding = 'ascii') ifTrue:[ |
|
8168 | 983 |
('iso8859*' match:superSetEncoding) ifTrue:[^ true]. |
984 |
('ms-ansi*' match:superSetEncoding) ifTrue:[^ true]. |
|
7938 | 985 |
]. |
986 |
||
7923 | 987 |
"/ TODO: check the charSets mappingTables... |
988 |
"/ self halt. |
|
989 |
^ false. |
|
990 |
! |
|
991 |
||
7919 | 992 |
nameOfDecodedCode |
993 |
"Most coders decode from their code into unicode / encode from unicode into their code. |
|
994 |
There are a few exceptions to this, though - these must redefine this." |
|
995 |
||
996 |
^ #'unicode' |
|
997 |
! |
|
998 |
||
999 |
nameOfEncoding |
|
7974 | 1000 |
^ (self nameWithoutPrefix asLowercase copyReplaceAll:$_ with:$-) asSymbol |
7919 | 1001 |
! |
1002 |
||
7959 | 1003 |
supportedExternalEncodings |
1004 |
"return an array of arrays containing the names of supported |
|
1005 |
encodings which are supported for external resources (i.e. files). |
|
1006 |
The first element contains the internally used symbolic name, |
|
1007 |
the second contains a user-readable string (description). |
|
1008 |
More than one external name may be mapped onto the same symbolic." |
|
1009 |
||
1010 |
^ #( |
|
8176 | 1011 |
('utf8' 'Unicode as 8Bit characters' ) |
8904 | 1012 |
('utf16BE' 'Unicode as 16Bit big-endian' ) |
1013 |
('utf16LE' 'Unicode as 16Bit little-endian' ) |
|
8176 | 1014 |
"/ ('utf7' 'Unicode as 7Bit characters' ) |
1015 |
"/ nil |
|
1016 |
('ascii' 'Common 7bit subset of iso8859' ) |
|
14188 | 1017 |
('iso8859-1' 'Western' ) |
1018 |
('iso8859-2' 'Central European' ) |
|
1019 |
('iso8859-3' 'South European' ) |
|
1020 |
('iso8859-4' 'Baltic' ) |
|
8176 | 1021 |
('iso8859-5' 'Cyrillic' ) |
1022 |
('iso8859-6' 'Arabic' ) |
|
1023 |
('iso8859-7' 'Greek' ) |
|
1024 |
('iso8859-8' 'Hebrew' ) |
|
14188 | 1025 |
('iso8859-15' 'Western with Euro' ) |
1026 |
('iso8859-16' 'South European with Euro' ) |
|
8176 | 1027 |
"/ nil |
16522 | 1028 |
('macintosh' 'MAC Western' ) |
1029 |
"/ nil |
|
8176 | 1030 |
('koi7' 'Cyrillic (Old)' ) |
1031 |
('koi8-r' 'Cyrillic' ) |
|
1032 |
('koi8-u' 'Cyrillic (Ukraine)' ) |
|
1033 |
"/ nil |
|
14188 | 1034 |
('cp437' 'Windows US / codepage 437' ) |
1035 |
('cp850' 'Windows Latin1 / codepage 850' ) |
|
1036 |
('cp1250' 'Windows Latin2 / codepage 1250' ) |
|
1037 |
('cp1251' 'Windows Cyrillic / codepage 1251') |
|
8176 | 1038 |
"/ ('mac' 'macintosh 8 bit' ) |
1039 |
('next' 'NeXT 8 bit' ) |
|
1040 |
"/ ('hp' 'hpux 8 bit' ) |
|
1041 |
"/ nil |
|
1042 |
('euc' 'EUC - extended unix code (japanese)' ) |
|
1043 |
('jis7' 'JIS7 - jis 7bit escape codes (japanese)' ) |
|
1044 |
('iso-2022-jp' 'Same as jis 7bit' ) |
|
1045 |
('sjis' 'SJIS - shift jis 8bit codes (japanese)' ) |
|
1046 |
"/ nil |
|
1047 |
('gb' 'GB - mainland china' ) |
|
1048 |
('big5' 'BIG5 - taiwan' ) |
|
7959 | 1049 |
"/ ('ksc' 'korean' ) |
8186 | 1050 |
('sgml' 'SGML (XML/HTML) character escapes' ) |
10111 | 1051 |
('java' 'JavaText (\uXXXX) character escapes' ) |
7959 | 1052 |
) |
10111 | 1053 |
|
1054 |
"Modified: / 23-10-2006 / 13:27:48 / cg" |
|
7959 | 1055 |
! |
1056 |
||
7947 | 1057 |
userFriendlyNameOfEncoding |
7972 | 1058 |
^ self nameOfEncoding asUppercaseFirst |
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1059 |
! ! |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1060 |
|
7912 | 1061 |
!CharacterEncoder class methodsFor:'testing'! |
1062 |
||
1063 |
isAbstract |
|
11228 | 1064 |
"Return if this class is an abstract class. |
1065 |
True is returned for CharacterEncoder here; false for subclasses. |
|
1066 |
Abstract subclasses must redefine again." |
|
1067 |
||
7912 | 1068 |
^ self == CharacterEncoder |
1069 |
! ! |
|
1070 |
||
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1071 |
!CharacterEncoder class methodsFor:'utilities'! |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1072 |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1073 |
guessEncodingOfBuffer:buffer |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1074 |
"look for a string of the form |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1075 |
encoding #name |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1076 |
or: |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1077 |
encoding: name |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1078 |
within the given buffer |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1079 |
(which is usually the first few bytes of a textFile)." |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1080 |
|
14169
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1081 |
|lcBuffer quote peek| |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1082 |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1083 |
buffer size < 4 ifTrue:[ |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1084 |
"not enough bytes to determine the contents" |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1085 |
^ nil. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1086 |
]. |
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1087 |
|
14169
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1088 |
"check the Byte Order Mark (BOM)" |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1089 |
peek := (buffer at:1) codePoint. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1090 |
peek < 16rFE ifTrue:[ |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1091 |
(peek = 16rEF |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1092 |
and:[(buffer at:2) codePoint = 16rBB |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1093 |
and:[(buffer at:3) codePoint = 16rBF]]) ifTrue:[ |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1094 |
^ #utf8 |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1095 |
]. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1096 |
(peek = 0 |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1097 |
and:[(buffer at:2) codePoint = 0 |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1098 |
and:[(buffer at:3) codePoint = 16rFE |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1099 |
and:[(buffer at:4) codePoint = 16rFF]]]) ifTrue:[ |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1100 |
^ #utf32be |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1101 |
]. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1102 |
] ifFalse:[ |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1103 |
peek = 16rFF ifTrue:[ |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1104 |
(buffer at:2) codePoint = 16rFE ifTrue:[ |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1105 |
"little endian" |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1106 |
((buffer at:3) codePoint = 0 and:[(buffer at:4) codePoint = 0]) ifTrue:[ |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1107 |
^ #utf32le. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1108 |
]. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1109 |
^ #utf16le |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1110 |
]. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1111 |
] ifFalse:["peek = 16rFE" |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1112 |
(buffer at:2) codePoint = 16rFF ifTrue:[ |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1113 |
"big endian" |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1114 |
^ #utf16be |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1115 |
]. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1116 |
] |
10672
b6230a13035b
#guessEncodingOfBuffer - do NOT handle encoding=utf8
Stefan Vogel <sv@exept.de>
parents:
10111
diff
changeset
|
1117 |
]. |
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1118 |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1119 |
lcBuffer := buffer asLowercase. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1120 |
|
14169
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1121 |
"now look for an inline encoding markup" |
10672
b6230a13035b
#guessEncodingOfBuffer - do NOT handle encoding=utf8
Stefan Vogel <sv@exept.de>
parents:
10111
diff
changeset
|
1122 |
#(charset encoding) do:[:keyWord | |
8855
289b5bda04bb
guessEncoding - return the real encodings name
Claus Gittinger <cg@exept.de>
parents:
8814
diff
changeset
|
1123 |
|encoderOrNil idx s w enc| |
289b5bda04bb
guessEncoding - return the real encodings name
Claus Gittinger <cg@exept.de>
parents:
8814
diff
changeset
|
1124 |
|
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1125 |
(idx := lcBuffer findString:keyWord) ~~ 0 ifTrue:[ |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1126 |
s := ReadStream on:buffer. |
15609 | 1127 |
s position:idx-1. |
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1128 |
s skip:keyWord size. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1129 |
s skipSeparators. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1130 |
|
10672
b6230a13035b
#guessEncodingOfBuffer - do NOT handle encoding=utf8
Stefan Vogel <sv@exept.de>
parents:
10111
diff
changeset
|
1131 |
"do not include '=' here, otherwise |
b6230a13035b
#guessEncodingOfBuffer - do NOT handle encoding=utf8
Stefan Vogel <sv@exept.de>
parents:
10111
diff
changeset
|
1132 |
files containing xml code (<?xml charset='utf8'> will be parsed as UTF-8" |
b6230a13035b
#guessEncodingOfBuffer - do NOT handle encoding=utf8
Stefan Vogel <sv@exept.de>
parents:
10111
diff
changeset
|
1133 |
|
11300 | 1134 |
[':#=' includes:s peek] whileTrue:[ |
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1135 |
s next. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1136 |
s skipSeparators. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1137 |
]. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1138 |
s skipSeparators. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1139 |
('"''' includes:s peek) ifTrue:[ |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1140 |
quote := s next. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1141 |
w := s upTo:quote. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1142 |
] ifFalse:[ |
16607 | 1143 |
w := s upToElementForWhich:[:ch | ch isSeparator or:[ch == $" or:[ch == $' or:[ch == $> ]]]]. |
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1144 |
]. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1145 |
w notNil ifTrue:[ |
11300 | 1146 |
enc := w withoutQuotes. |
1147 |
(enc startsWith:'x-') ifTrue:[ |
|
1148 |
enc := enc copyFrom:3. |
|
1149 |
]. |
|
10672
b6230a13035b
#guessEncodingOfBuffer - do NOT handle encoding=utf8
Stefan Vogel <sv@exept.de>
parents:
10111
diff
changeset
|
1150 |
encoderOrNil := self encoderFor:enc ifAbsent:nil. |
8855
289b5bda04bb
guessEncoding - return the real encodings name
Claus Gittinger <cg@exept.de>
parents:
8814
diff
changeset
|
1151 |
encoderOrNil notNil ifTrue:[ |
289b5bda04bb
guessEncoding - return the real encodings name
Claus Gittinger <cg@exept.de>
parents:
8814
diff
changeset
|
1152 |
^ encoderOrNil nameOfEncoding |
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1153 |
]. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1154 |
"/ enc size >=3 ifTrue:[ |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1155 |
"/ Transcript showCR:'Unknown encoding: ' , (withoutQuotes value:w). |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1156 |
"/ ] |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1157 |
]. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1158 |
]. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1159 |
]. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1160 |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1161 |
"/ look for JIS7 / EUC encoding |
14169
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1162 |
(buffer findString:self jisISO2022EscapeSequence) ~~ 0 ifTrue:[ |
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1163 |
^ #'iso2020-jp' |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1164 |
]. |
14169
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1165 |
(buffer findString:self jis7KanjiEscapeSequence) ~~ 0 ifTrue:[ |
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1166 |
^ #jis7 |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1167 |
]. |
14169
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1168 |
(buffer findString:self jis7KanjiOldEscapeSequence) ~~ 0 ifTrue:[ |
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1169 |
^ #jis7 |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1170 |
]. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1171 |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1172 |
"/ TODO: |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1173 |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1174 |
"/ "/ look for EUC |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1175 |
"/ idx := aString findFirst:[:char | |ascii| |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1176 |
"/ ((ascii := char asciiValue) >= 16rA1) |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1177 |
"/ and:[ascii <= 16rFE]]. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1178 |
"/ idx ~~ 0 ifTrue:[ |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1179 |
"/ ascii := (aString at:(idx + 1)) asciiValue. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1180 |
"/ (ascii >= 16rA1 and:[ascii <= 16rFE]) ifTrue:[ |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1181 |
"/ ^ #euc |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1182 |
"/ ] |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1183 |
"/ ]. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1184 |
"/ look for SJIS ... |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1185 |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1186 |
^ nil |
14169
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1187 |
! |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1188 |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1189 |
guessEncodingOfFile:aFilename |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1190 |
"look for a string |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1191 |
encoding #name |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1192 |
or: |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1193 |
encoding: name |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1194 |
within the given buffer |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1195 |
(which is usually the first few bytes of a textFile). |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1196 |
If thats not found, use heuristics (in CharacterArray) to guess." |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1197 |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1198 |
|s buffer n "{Class: SmallInteger }"| |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1199 |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1200 |
s := aFilename asFilename readStreamOrNil. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1201 |
s isNil ifTrue:[^ nil]. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1202 |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1203 |
buffer := String new:64. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1204 |
n := s nextBytes:buffer size into:buffer. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1205 |
s close. |
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1206 |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1207 |
^ self guessEncodingOfBuffer:buffer. |
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1208 |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1209 |
" |
14094 | 1210 |
self guessEncodingOfFile:'../../libview/resources/de.rs' asFilename |
1211 |
self guessEncodingOfFile:'../../libview/resources/ru.rs' asFilename |
|
1212 |
self guessEncodingOfFile:'../../libview/resources/th.rs' asFilename |
|
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1213 |
" |
13382 | 1214 |
|
1215 |
"Modified: / 31-05-2011 / 15:45:19 / cg" |
|
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1216 |
! |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1217 |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1218 |
guessEncodingOfStream:aStream |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1219 |
"look for a string of the form |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1220 |
encoding #name |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1221 |
or: |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1222 |
encoding: name |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1223 |
in the first few bytes of aStream." |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1224 |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1225 |
|oldPosition buffer n| |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1226 |
|
13382 | 1227 |
buffer := String new:64. |
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1228 |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1229 |
oldPosition := aStream position. |
14094 | 1230 |
n := aStream nextBytes:buffer size into:buffer. |
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1231 |
aStream position:oldPosition. |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1232 |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1233 |
^ self guessEncodingOfBuffer:buffer |
13382 | 1234 |
|
1235 |
"Modified: / 31-05-2011 / 15:45:23 / cg" |
|
8810 | 1236 |
! |
1237 |
||
1238 |
showCharacterSet |
|
1239 |
|font| |
|
1240 |
||
1241 |
font := View defaultFont. |
|
14206
70aa64d89dca
comment/format in: #showCharacterSet
Stefan Vogel <sv@exept.de>
parents:
14188
diff
changeset
|
1242 |
"/ font := (Font family:'courier' face:'medium' style:'roman' size:12 encoding:'iso10646-1'). |
8810 | 1243 |
|
1244 |
CharacterSetView |
|
1245 |
openOn:font |
|
1246 |
label:'Characters of ',self nameWithoutPrefix |
|
1247 |
clickLabel:nil |
|
1248 |
asInputFor:nil |
|
1249 |
encoder:self |
|
1250 |
||
1251 |
" |
|
14206
70aa64d89dca
comment/format in: #showCharacterSet
Stefan Vogel <sv@exept.de>
parents:
14188
diff
changeset
|
1252 |
CharacterEncoderImplementations::MS_Ansi showCharacterSet |
8810 | 1253 |
" |
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1254 |
! ! |
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1255 |
|
7892 | 1256 |
!CharacterEncoder methodsFor:'encoding & decoding'! |
1257 |
||
1258 |
decode:anEncoding |
|
1259 |
"given an integer in my encoding, return a unicode codePoint for it" |
|
1260 |
||
8118 | 1261 |
self subclassResponsibility |
7892 | 1262 |
! |
1263 |
||
1264 |
decodeString:anEncodedString |
|
1265 |
"given a string in my encoding, return a unicode-string for it" |
|
1266 |
||
8150
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1267 |
|newString myCode uniCodePoint bits| |
8118 | 1268 |
|
1269 |
newString := String new:(anEncodedString size). |
|
8150
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1270 |
bits := newString bitsPerCharacter. |
8118 | 1271 |
|
8150
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1272 |
1 to:anEncodedString size do:[:idx | |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1273 |
uniCodePoint := (anEncodedString at:idx) codePoint. |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1274 |
myCode := self decode:uniCodePoint. |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1275 |
myCode > 16rFF ifTrue:[ |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1276 |
myCode > 16rFFFF ifTrue:[ |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1277 |
bits < 32 ifTrue:[ |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1278 |
newString := Unicode32String fromString:newString. |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1279 |
bits := 32. |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1280 |
] |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1281 |
] ifFalse:[ |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1282 |
bits < 16 ifTrue:[ |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1283 |
newString := Unicode16String fromString:newString. |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1284 |
bits := 16. |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1285 |
] |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1286 |
] |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1287 |
]. |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1288 |
newString at:idx put:(Character value:myCode). |
8118 | 1289 |
]. |
1290 |
^ newString |
|
7892 | 1291 |
|
1292 |
" |
|
1293 |
ISO8859_1 decodeString:'hello' |
|
1294 |
" |
|
1295 |
! |
|
1296 |
||
1297 |
encode:aCodePoint |
|
1298 |
"given a codePoint in unicode, return a byte in my encoding for it" |
|
1299 |
||
8118 | 1300 |
self subclassResponsibility |
7892 | 1301 |
! |
1302 |
||
1303 |
encodeString:aUnicodeString |
|
1304 |
"given a string in unicode, return a string in my encoding for it" |
|
1305 |
||
8150
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1306 |
|newString myCode uniCodePoint bits| |
8118 | 1307 |
|
8150
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1308 |
newString := String new:(aUnicodeString size). |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1309 |
bits := newString bitsPerCharacter. |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1310 |
|
8118 | 1311 |
1 to:aUnicodeString size do:[:idx | |
8150
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1312 |
uniCodePoint := (aUnicodeString at:idx) codePoint. |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1313 |
myCode := self encode:uniCodePoint. |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1314 |
myCode > 16rFF ifTrue:[ |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1315 |
myCode > 16rFFFF ifTrue:[ |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1316 |
bits < 32 ifTrue:[ |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1317 |
newString := Unicode32String fromString:newString. |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1318 |
bits := 32. |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1319 |
] |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1320 |
] ifFalse:[ |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1321 |
bits < 16 ifTrue:[ |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1322 |
newString := Unicode16String fromString:newString. |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1323 |
bits := 16. |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1324 |
] |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1325 |
] |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1326 |
]. |
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1327 |
newString at:idx put:(Character value:myCode). |
8118 | 1328 |
]. |
1329 |
^ newString |
|
17664 | 1330 |
! |
1331 |
||
1332 |
encodeString:aUnicodeString on:aStream |
|
18141 | 1333 |
"given a string in unicode, encode it onto aStream. |
18142 | 1334 |
Subclasses can redefine this to avoid allocating many new string instances. |
1335 |
(but must then also redefine encodeString:aUnicodeString to collect the characters)" |
|
17664 | 1336 |
|
1337 |
aStream nextPutAll:(self encodeString:aUnicodeString). |
|
7892 | 1338 |
! ! |
1339 |
||
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1340 |
!CharacterEncoder methodsFor:'error handling'! |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1341 |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1342 |
decodingError |
7904 | 1343 |
"report an error that there is no unicode-codePoint for a given codePoint in this encoding. |
1344 |
(which is unlikely) or that the encoding is undefined for that value |
|
1345 |
(for example, holes in the ISO8859-3 encoding)" |
|
1346 |
||
7919 | 1347 |
|badCodePoint sender| |
1348 |
||
1349 |
sender := thisContext sender. |
|
1350 |
((sender selector == #encode:) or:[sender selector == #decode:]) ifFalse:[ |
|
11295 | 1351 |
badCodePoint := sender methodHome argAt:1 |
7919 | 1352 |
]. |
11295 | 1353 |
^ (DecodingError new) |
1354 |
defaultValue:(self defaultDecoderValue); |
|
1355 |
parameter:badCodePoint; |
|
1356 |
messageText:'invalid code'; |
|
1357 |
suspendedContext:sender; |
|
1358 |
raiseRequest. |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1359 |
! |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1360 |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1361 |
defaultDecoderValue |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1362 |
"placed into a decoded string, in case there is no unicode codePoint |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1363 |
for a given encoded codePoint. |
7904 | 1364 |
(typically 16rFFFF)." |
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1365 |
|
7904 | 1366 |
^ 16rFFFF |
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1367 |
! |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1368 |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1369 |
defaultEncoderValue |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1370 |
"placed into an encoded string, in case there is no codePoint |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1371 |
for a given unicode codePoint. |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1372 |
(typically $?)." |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1373 |
|
8101
f7023a4735bf
Use the ANSI-blessed #codePoint instead of deprecated #asciiValue
Stefan Vogel <sv@exept.de>
parents:
8087
diff
changeset
|
1374 |
^ $? codePoint |
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1375 |
! |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1376 |
|
7919 | 1377 |
encodingError |
1378 |
"report an error that some unicode-codePoint cannot be represented by this encoder" |
|
1379 |
||
1380 |
|badCodePoint sender| |
|
7904 | 1381 |
|
1382 |
sender := thisContext sender. |
|
1383 |
((sender selector == #encode:) or:[sender selector == #decode:]) ifFalse:[ |
|
14209 | 1384 |
badCodePoint := sender methodHome argAt:1 |
7904 | 1385 |
]. |
8048 | 1386 |
^ (EncodingError new) |
14209 | 1387 |
defaultValue:(self defaultEncoderValue); |
1388 |
parameter:badCodePoint; |
|
1389 |
messageText:'unrepresentable code (some character cannot be represented)'; |
|
1390 |
suspendedContext:sender; |
|
1391 |
raiseRequest |
|
1392 |
||
1393 |
"Modified: / 12-07-2012 / 20:36:37 / cg" |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1394 |
! ! |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1395 |
|
7972 | 1396 |
!CharacterEncoder methodsFor:'printing'! |
1397 |
||
1398 |
printOn:aStream |
|
1399 |
aStream |
|
14209 | 1400 |
nextPutAll:(self nameOfDecodedCode); |
1401 |
nextPutAll:'->'; |
|
1402 |
nextPutAll:(self nameOfEncoding) |
|
7972 | 1403 |
! ! |
1404 |
||
7892 | 1405 |
!CharacterEncoder methodsFor:'private'! |
1406 |
||
1407 |
newString:size |
|
1408 |
self subclassResponsibility |
|
1409 |
! ! |
|
1410 |
||
7917 | 1411 |
!CharacterEncoder methodsFor:'queries'! |
1412 |
||
11975 | 1413 |
characterSize:codePoint |
1414 |
"return the number of bytes required to encode codePoint" |
|
1415 |
||
1416 |
^ self subclassResponsibility |
|
1417 |
||
1418 |
"Created: / 15-06-2005 / 15:11:04 / janfrog" |
|
1419 |
! |
|
1420 |
||
17118 | 1421 |
isEncoderFor:encoding |
1422 |
"does this encode to encoding?" |
|
1423 |
||
1424 |
|encodingNameSymbol| |
|
1425 |
||
1426 |
encodingNameSymbol := encoding asLowercase. |
|
1427 |
encodingNameSymbol = #'iso10646-1' ifTrue:[ encodingNameSymbol := #unicode]. |
|
1428 |
||
1429 |
^ encodingNameSymbol = self nameOfEncoding |
|
1430 |
! |
|
1431 |
||
7917 | 1432 |
isNullEncoder |
1433 |
^ false |
|
7972 | 1434 |
! |
1435 |
||
1436 |
nameOfDecodedCode |
|
1437 |
"Most coders decode from their code into unicode / encode from unicode into their code. |
|
1438 |
There are a few exceptions to this, though - these must redefine this." |
|
1439 |
||
1440 |
^ self class nameOfDecodedCode |
|
1441 |
! |
|
1442 |
||
1443 |
nameOfEncoding |
|
1444 |
^ self class nameOfEncoding |
|
1445 |
! |
|
1446 |
||
1447 |
userFriendlyNameOfEncoding |
|
1448 |
^ self class userFriendlyNameOfEncoding |
|
7917 | 1449 |
! ! |
1450 |
||
11975 | 1451 |
!CharacterEncoder methodsFor:'stream support'! |
1452 |
||
12608 | 1453 |
readNext:charactersToRead charactersFrom:stream |
1454 |
^ self decodeString:(stream next:charactersToRead) |
|
11975 | 1455 |
! |
1456 |
||
1457 |
readNextCharacterFrom:aStream |
|
12608 | 1458 |
|
1459 |
| c | |
|
1460 |
||
1461 |
c := aStream next. |
|
1462 |
||
1463 |
^ c isNil |
|
1464 |
ifTrue: [nil] |
|
1465 |
ifFalse: [(self decode:c asInteger) asCharacter] |
|
1466 |
||
1467 |
"Created: / 14-06-2005 / 17:03:21 / janfrog" |
|
1468 |
"Modified: / 15-06-2005 / 15:27:49 / janfrog" |
|
1469 |
"Modified: / 20-06-2005 / 13:13:52 / masca" |
|
12435
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1470 |
! |
11975 | 1471 |
|
12435
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1472 |
readNextInputCharacterFrom:aStream |
12608 | 1473 |
^ aStream next |
11975 | 1474 |
! ! |
1475 |
||
7915 | 1476 |
!CharacterEncoder::CompoundEncoder class methodsFor:'documentation'! |
7914 | 1477 |
|
1478 |
documentation |
|
1479 |
" |
|
1480 |
A compoundEncoder uses two real encoders; |
|
1481 |
to encode: |
|
14209 | 1482 |
string -> decoder(encode) -> encoder -> result |
7914 | 1483 |
to decode: |
14209 | 1484 |
string -> encoder -> decoder -> result |
7956 | 1485 |
|
1486 |
|e| |
|
1487 |
||
1488 |
e := CompoundEncoder new. |
|
1489 |
e encoder:ISO8859_5 decoder:KOI8_R. |
|
1490 |
e decode:16rB0. 'CYRILLIC CAPITAL LETTER A; 16rB0 in 8859-5; 16rE1 in KOI8-R'. |
|
1491 |
e encode:16rE1. |
|
7914 | 1492 |
" |
1493 |
! ! |
|
1494 |
||
7915 | 1495 |
!CharacterEncoder::CompoundEncoder methodsFor:'accessing'! |
7914 | 1496 |
|
1497 |
encoder:encoderArg decoder:decoderArg |
|
1498 |
"set instance variables (automatically generated)" |
|
1499 |
||
1500 |
decoder := decoderArg. |
|
1501 |
encoder := encoderArg. |
|
1502 |
! ! |
|
1503 |
||
7915 | 1504 |
!CharacterEncoder::CompoundEncoder methodsFor:'encoding & decoding'! |
7914 | 1505 |
|
7956 | 1506 |
decode:aCode |
1507 |
^ decoder encode:(encoder decode:aCode) |
|
1508 |
! |
|
1509 |
||
1510 |
decodeString:aString |
|
1511 |
^ decoder encodeString:(encoder decodeString:aString) |
|
1512 |
! |
|
1513 |
||
7914 | 1514 |
encode:aCode |
1515 |
^ encoder encode:(decoder decode:aCode) |
|
1516 |
! |
|
1517 |
||
1518 |
encodeString:aString |
|
1519 |
^ encoder encodeString:(decoder decodeString:aString) |
|
1520 |
! ! |
|
1521 |
||
7972 | 1522 |
!CharacterEncoder::CompoundEncoder methodsFor:'printing'! |
1523 |
||
1524 |
printOn:aStream |
|
1525 |
aStream |
|
14209 | 1526 |
nextPutAll:(decoder nameOfEncoding); |
1527 |
nextPutAll:'->'. |
|
7972 | 1528 |
"/ nextPutAll:(decoder nameOfDecodedCode); |
1529 |
"/ nextPutAll:'->'; |
|
1530 |
"/ nextPutAll:(encoder nameOfEncoding) |
|
1531 |
encoder printOn:aStream |
|
1532 |
! ! |
|
1533 |
||
7932 | 1534 |
!CharacterEncoder::DefaultEncoder class methodsFor:'documentation'! |
1535 |
||
1536 |
documentation |
|
1537 |
" |
|
7972 | 1538 |
That is only a dummy for ST80 compatibility |
7932 | 1539 |
" |
1540 |
! ! |
|
1541 |
||
7915 | 1542 |
!CharacterEncoder::InverseEncoder class methodsFor:'documentation'! |
7914 | 1543 |
|
1544 |
documentation |
|
1545 |
" |
|
1546 |
An inverseEncoder does the inverse - i.e. encode is really a decode |
|
1547 |
and decode is really an encode. |
|
1548 |
" |
|
1549 |
! ! |
|
1550 |
||
7915 | 1551 |
!CharacterEncoder::InverseEncoder methodsFor:'accessing'! |
7914 | 1552 |
|
1553 |
decoder:something |
|
1554 |
decoder := something. |
|
1555 |
! ! |
|
1556 |
||
7915 | 1557 |
!CharacterEncoder::InverseEncoder methodsFor:'encoding & decoding'! |
7914 | 1558 |
|
1559 |
decode:aCode |
|
1560 |
^ decoder encode:aCode |
|
1561 |
! |
|
1562 |
||
1563 |
decodeString:aString |
|
1564 |
^ decoder encodeString:aString |
|
1565 |
! |
|
1566 |
||
1567 |
encode:aCode |
|
1568 |
^ decoder decode:aCode |
|
1569 |
! |
|
1570 |
||
1571 |
encodeString:aString |
|
1572 |
^ decoder decodeString:aString |
|
1573 |
! ! |
|
1574 |
||
7972 | 1575 |
!CharacterEncoder::InverseEncoder methodsFor:'printing'! |
1576 |
||
1577 |
printOn:aStream |
|
1578 |
aStream |
|
14209 | 1579 |
nextPutAll:(decoder nameOfEncoding); |
1580 |
nextPutAll:'->'; |
|
1581 |
nextPutAll:(decoder nameOfDecodedCode) |
|
7972 | 1582 |
! ! |
1583 |
||
12435
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1584 |
!CharacterEncoder::InverseEncoder methodsFor:'queries'! |
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1585 |
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1586 |
characterSize:charOrcodePoint |
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1587 |
^ decoder characterSize:charOrcodePoint |
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1588 |
! ! |
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1589 |
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1590 |
!CharacterEncoder::InverseEncoder methodsFor:'stream support'! |
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1591 |
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1592 |
readNextInputCharacterFrom:aStream |
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1593 |
^ decoder readNextInputCharacterFrom:aStream |
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1594 |
! ! |
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1595 |
|
7915 | 1596 |
!CharacterEncoder::NullEncoder class methodsFor:'documentation'! |
7914 | 1597 |
|
1598 |
documentation |
|
1599 |
" |
|
1600 |
A NullEncoder does nothing. |
|
1601 |
" |
|
1602 |
! ! |
|
1603 |
||
7915 | 1604 |
!CharacterEncoder::NullEncoder methodsFor:'encoding & decoding'! |
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1605 |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1606 |
decode:aCode |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1607 |
^ aCode |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1608 |
! |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1609 |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1610 |
decodeString:aString |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1611 |
^ aString |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1612 |
! |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1613 |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1614 |
encode:aCode |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1615 |
^ aCode |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1616 |
! |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1617 |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1618 |
encodeString:aString |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1619 |
^ aString |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1620 |
! ! |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1621 |
|
7917 | 1622 |
!CharacterEncoder::NullEncoder methodsFor:'queries'! |
1623 |
||
1624 |
isNullEncoder |
|
1625 |
^ true |
|
1626 |
! ! |
|
1627 |
||
7915 | 1628 |
!CharacterEncoder::OtherEncoding class methodsFor:'private'! |
7892 | 1629 |
|
1630 |
flushCode |
|
1631 |
! |
|
1632 |
||
1633 |
generateEncoderCode |
|
1634 |
! ! |
|
1635 |
||
7919 | 1636 |
!CharacterEncoder::TwoStepEncoder class methodsFor:'documentation'! |
1637 |
||
1638 |
documentation |
|
1639 |
" |
|
1640 |
A twoStepEncoder uses two real encoders; |
|
1641 |
to encode: |
|
14209 | 1642 |
string -> encoder1(encode) -> encoder2(encode) -> result |
7919 | 1643 |
to decode: |
14209 | 1644 |
string -> encoder2(decode) -> encoder1(decode) -> result |
7919 | 1645 |
" |
1646 |
! ! |
|
1647 |
||
1648 |
!CharacterEncoder::TwoStepEncoder methodsFor:'accessing'! |
|
1649 |
||
1650 |
encoder1:encoder1Arg encoder2:encoder2Arg |
|
1651 |
"set instance variables (automatically generated)" |
|
1652 |
||
1653 |
encoder1 := encoder1Arg. |
|
1654 |
encoder2 := encoder2Arg. |
|
1655 |
! ! |
|
1656 |
||
1657 |
!CharacterEncoder::TwoStepEncoder methodsFor:'encoding & decoding'! |
|
1658 |
||
1659 |
decode:aCode |
|
1660 |
^ encoder1 decode:(encoder2 decode:aCode) |
|
1661 |
! |
|
1662 |
||
1663 |
decodeString:aString |
|
1664 |
^ encoder1 decodeString:(encoder2 decodeString:aString) |
|
1665 |
! |
|
1666 |
||
1667 |
encode:aCode |
|
1668 |
^ encoder2 encode:(encoder1 encode:aCode) |
|
1669 |
! |
|
1670 |
||
1671 |
encodeString:aString |
|
1672 |
^ encoder2 encodeString:(encoder1 encodeString:aString) |
|
1673 |
! ! |
|
1674 |
||
7972 | 1675 |
!CharacterEncoder::TwoStepEncoder methodsFor:'printing'! |
1676 |
||
1677 |
printOn:aStream |
|
1678 |
aStream |
|
14209 | 1679 |
nextPutAll:(encoder1 nameOfDecodedCode); |
1680 |
nextPutAll:'->'; |
|
1681 |
nextPutAll:(encoder1 nameOfEncoding); |
|
1682 |
nextPutAll:'->'; |
|
1683 |
nextPutAll:(encoder2 nameOfEncoding) |
|
7972 | 1684 |
! ! |
1685 |
||
11300 | 1686 |
!CharacterEncoder::TwoStepEncoder methodsFor:'queries'! |
1687 |
||
14523
91746a24d5ad
characterSize: query was missing
Claus Gittinger <cg@exept.de>
parents:
14209
diff
changeset
|
1688 |
characterSize:codePoint |
91746a24d5ad
characterSize: query was missing
Claus Gittinger <cg@exept.de>
parents:
14209
diff
changeset
|
1689 |
"/ naive; actually, we have to do a real encoding to get this info proper |
91746a24d5ad
characterSize: query was missing
Claus Gittinger <cg@exept.de>
parents:
14209
diff
changeset
|
1690 |
^ (encoder2 characterSize:codePoint) |
91746a24d5ad
characterSize: query was missing
Claus Gittinger <cg@exept.de>
parents:
14209
diff
changeset
|
1691 |
|
91746a24d5ad
characterSize: query was missing
Claus Gittinger <cg@exept.de>
parents:
14209
diff
changeset
|
1692 |
"Created: / 22-11-2012 / 13:07:47 / cg" |
91746a24d5ad
characterSize: query was missing
Claus Gittinger <cg@exept.de>
parents:
14209
diff
changeset
|
1693 |
! |
91746a24d5ad
characterSize: query was missing
Claus Gittinger <cg@exept.de>
parents:
14209
diff
changeset
|
1694 |
|
11300 | 1695 |
nameOfEncoding |
1696 |
^ "encoder1 nameOfEncoding , '-' ," encoder2 nameOfEncoding |
|
1697 |
||
1698 |
||
1699 |
||
1700 |
||
1701 |
||
1702 |
||
1703 |
||
1704 |
||
1705 |
||
1706 |
||
1707 |
||
1708 |
||
1709 |
||
1710 |
||
1711 |
||
1712 |
||
1713 |
! ! |
|
1714 |
||
7892 | 1715 |
!CharacterEncoder class methodsFor:'documentation'! |
1716 |
||
1717 |
version |
|
18142 | 1718 |
^ '$Header: /cvs/stx/stx/libbasic/CharacterEncoder.st,v 1.137 2015-03-25 19:21:49 cg Exp $' |
12435
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1719 |
! |
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1720 |
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1721 |
version_CVS |
18142 | 1722 |
^ '$Header: /cvs/stx/stx/libbasic/CharacterEncoder.st,v 1.137 2015-03-25 19:21:49 cg Exp $' |
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1723 |
! ! |
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1724 |
|
14777
a669080229da
add user friendly name to semaphores
Stefan Vogel <sv@exept.de>
parents:
14559
diff
changeset
|
1725 |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1726 |
CharacterEncoder initialize! |