| author | Stefan Vogel <sv@exept.de> |
| Thu, 16 Feb 2017 20:41:46 +0100 | |
| changeset 21471 | bbf99c77f552 |
| parent 21138 | 1cc7a2e7ee19 |
| child 21602 | c63ec4a97409 |
| permissions | -rw-r--r-- |
| 21471 | 1 |
"{ Encoding: utf8 }"
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" |
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character encodings - first attempt
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parents:
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4 |
COPYRIGHT (c) 2004 by eXept Software AG |
| 14209 | 5 |
All Rights Reserved |
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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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8 |
only in accordance with the terms of that license and with the |
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7577df77ba95
character encodings - first attempt
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parents:
7893
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inclusion of the above copyright notice. This software may not |
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7577df77ba95
character encodings - first attempt
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parents:
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be provided or otherwise made available to, or used by, any |
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7577df77ba95
character encodings - first attempt
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parents:
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other person. No title to or ownership of the software is |
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7577df77ba95
character encodings - first attempt
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parents:
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hereby transferred. |
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character encodings - first attempt
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" |
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separated implementation into dynamically (lazy) loaded classes
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"{ Package: 'stx:libbasic' }"
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"{ NameSpace: Smalltalk }"
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Object subclass:#CharacterEncoder |
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instanceVariableNames:'' |
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classVariableNames:'EncoderClassesByName EncodersByName CachedEncoders AccessLock |
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NullEncoderInstance Jis7KanjiEscapeSequence |
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Jis7RomanEscapeSequence JisISO2022EscapeSequence |
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Jis7KanjiOldEscapeSequence EncodingDetectors' |
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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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! |
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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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privateIn:CharacterEncoder |
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! |
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CharacterEncoder subclass:#NullEncoder |
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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:#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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copyright |
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character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
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" |
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character encodings - first attempt
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parents:
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COPYRIGHT (c) 2004 by eXept Software AG |
| 14209 | 75 |
All Rights Reserved |
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character encodings - first attempt
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parents:
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character encodings - first attempt
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parents:
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This software is furnished under a license and may be used |
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7577df77ba95
character encodings - first attempt
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parents:
7893
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only in accordance with the terms of that license and with the |
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7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
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79 |
inclusion of the above copyright notice. This software may not |
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7577df77ba95
character encodings - first attempt
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parents:
7893
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changeset
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be provided or otherwise made available to, or used by, any |
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7577df77ba95
character encodings - first attempt
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parents:
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other person. No title to or ownership of the software is |
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7577df77ba95
character encodings - first attempt
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parents:
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hereby transferred. |
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character encodings - first attempt
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parents:
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" |
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character encodings - first attempt
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parents:
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! |
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documentation |
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" |
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unfinished code - please read howToAddMoreCoders. |
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character encodings - first attempt
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parents:
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character encodings - first attempt
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parents:
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Character mappings are based on information in character maps found at either: |
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http://std.dkuug.dk/i18n/charmaps |
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character encodings - first attempt
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or: |
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http://www.unicode.org/Public/MAPPINGS |
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character encodings - first attempt
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character encodings - first attempt
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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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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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[author:] |
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Claus Gittinger |
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" |
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! |
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examples |
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" |
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[exBegin] |
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|s1 s2| |
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s1 := 'hello'. |
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s2 := CharacterEncoder encodeString:s1 from:#'iso8859-1' into:#'unicode'. |
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s2 |
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[exEnd] |
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[exBegin] |
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|s1 s2| |
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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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howToAddMoreCoders |
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" |
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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. |
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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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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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- 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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- generate code by evaluating (make sure that CharacterEncoderGenerator is loaded from stx:goodies): |
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CharacterEncoder::CP267 generateCode |
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That's all!! |
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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. |
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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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CharacterEncoder::ISO8859_15 flushCode; generateCode. |
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CharacterEncoder::ISO8859_16 flushCode; generateCode. |
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CharacterEncoder::KOI8_R flushCode; generateCode. |
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CharacterEncoder::GSM0338 flushCode; generateCode. |
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CharacterEncoder::KOI8_U flushCode; generateSubclassCode. |
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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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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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0 to:255 do:[:asc | |
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|ebc asc2| |
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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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|
214 |
]. |
|
7899
7577df77ba95
character encodings - first attempt
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|
215 |
" |
|
7577df77ba95
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|
216 |
! ! |
|
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diff
changeset
|
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. |
|
|
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changeset
|
227 |
|
| 16054 | 228 |
"/ (EncodersByName at:#unicode) at:encodingNameSymbol put:NullEncoderInstance. |
229 |
"/ (EncoderClassesByName at:#unicode) at:encodingNameSymbol put:NullEncoder. |
|
|
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changeset
|
230 |
|
|
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b5cf7abdfe64
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|
231 |
"/ self error:'no encoder for ' , encodingNameSymbol mayProceed:true. |
| 17520 | 232 |
('CharacterEncoder [warning]: no encoder for "' , encodingNameSymbol,'"') infoPrintCR.
|
|
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diff
changeset
|
233 |
|
| 8156 | 234 |
NullEncoderInstance |
235 |
] |
|
| 7971 | 236 |
|
237 |
" |
|
|
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parents:
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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' |
|
|
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0a2ee76bcf55
last version before separating into extra classes
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diff
changeset
|
251 |
self encoderFor:#'utf8' |
|
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diff
changeset
|
252 |
(self encoderFor:#'utf16le') encodeString:'hello' |
|
eab487f07a2b
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parents:
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changeset
|
253 |
(self encoderFor:#'utf16le') encode:5 |
|
eab487f07a2b
comment/format in: #encoderFor:
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changeset
|
254 |
(self encoderFor:#'utf16be') encodeString:'hello' |
|
eab487f07a2b
comment/format in: #encoderFor:
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changeset
|
255 |
(self encoderFor:#'utf16be') encode:5 |
|
eab487f07a2b
comment/format in: #encoderFor:
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changeset
|
256 |
(self encoderFor:#'utf32le') encodeString:'hello' |
|
eab487f07a2b
comment/format in: #encoderFor:
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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:[ |
|
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parents:
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diff
changeset
|
280 |
AccessLock critical:[ |
|
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|
281 |
unicodeEncoders := EncodersByName at:#unicode ifAbsent:nil. |
|
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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 |
|
|
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diff
changeset
|
291 |
AccessLock critical:[ |
| 18305 | 292 |
unicodeEncoderClasses := self encoderClassesByName at:#unicode. |
|
8262
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parents:
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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
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parents:
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diff
changeset
|
317 |
]. |
|
550c67712dfa
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parents:
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diff
changeset
|
318 |
enc isNil ifTrue:[ |
|
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parents:
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diff
changeset
|
319 |
AccessLock critical:[ |
| 18305 | 320 |
unicodeEncoderClasses := self encoderClassesByName at:#unicode ifAbsent:nil. |
| 8155 | 321 |
unicodeEncoderClasses isNil ifTrue:[ |
| 18305 | 322 |
self encoderClassesByName at:#unicode put:(unicodeEncoderClasses := Dictionary new). |
| 8155 | 323 |
]. |
324 |
clsName := unicodeEncoderClasses at:name ifAbsent:nil. |
|
|
8262
550c67712dfa
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parents:
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diff
changeset
|
325 |
]. |
|
550c67712dfa
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parents:
8261
diff
changeset
|
326 |
clsName notNil ifTrue:[ |
|
550c67712dfa
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parents:
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diff
changeset
|
327 |
clsName isBehavior ifTrue:[ |
|
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parents:
8261
diff
changeset
|
328 |
cls := clsName |
|
550c67712dfa
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parents:
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diff
changeset
|
329 |
] ifFalse:[ |
|
550c67712dfa
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parents:
8261
diff
changeset
|
330 |
cls := CharacterEncoderImplementations at:clsName. |
|
550c67712dfa
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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
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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
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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:[ |
| 18305 | 348 |
unicodeEncoderClasses := self encoderClassesByName at:#unicode ifAbsent:nil. |
|
8262
550c67712dfa
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Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
349 |
]. |
| 8118 | 350 |
unicodeEncoderClasses keysAndValuesDo:[:eachEncodingAlias :eachEncoderClass | |
| 8155 | 351 |
|dict2 enc1 enc2| |
| 8118 | 352 |
|
|
8262
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Claus Gittinger <cg@exept.de>
parents:
8261
diff
changeset
|
353 |
AccessLock critical:[ |
| 18305 | 354 |
dict2 := self encoderClassesByName at:eachEncodingAlias ifAbsent:nil. |
|
8262
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 |
||
| 18305 | 379 |
self encoderClassesByName keysAndValuesDo:[:encoding1 :dict1 | |
| 8194 | 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:[ |
| 18305 | 385 |
dict2 := self encoderClassesByName at:#unicode. |
|
8262
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:[ |
|
| 18305 | 474 |
encoderClasses := self encoderClassesByName at:oldEncoding ifAbsent:nil. |
| 8155 | 475 |
encoderClasses isNil ifTrue:[ |
| 18305 | 476 |
self encoderClassesByName at:oldEncoding put:(encoderClasses := Dictionary new). |
| 8155 | 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 |
|
| 18305 | 552 |
encoderClassesByName |
553 |
EncoderClassesByName isNil ifTrue:[ |
|
554 |
self initializeEncoderClassesByName |
|
555 |
]. |
|
556 |
^ EncoderClassesByName |
|
557 |
! |
|
558 |
||
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
559 |
initialize |
| 17529 | 560 |
AccessLock notNil ifTrue:[^ self]. "/ already initialized |
561 |
||
|
14777
a669080229da
add user friendly name to semaphores
Stefan Vogel <sv@exept.de>
parents:
14559
diff
changeset
|
562 |
AccessLock := RecursionLock new name:'CharacterEncoder'. |
| 8118 | 563 |
NullEncoderInstance := NullEncoder new. |
| 7973 | 564 |
|
| 8126 | 565 |
EncodersByName := Dictionary new. |
| 18305 | 566 |
CachedEncoders := Dictionary new. |
567 |
||
568 |
self initializeEncoderClassesByName. |
|
569 |
||
570 |
OperatingSystem isUNIXlike ifTrue:[ |
|
571 |
"/Initialize OS system encoder |
|
572 |
OperatingSystem getCodesetEncoder. |
|
573 |
]. |
|
574 |
||
575 |
" |
|
576 |
self initialize |
|
577 |
" |
|
578 |
||
579 |
"Modified: / 01-04-2011 / 14:30:06 / cg" |
|
580 |
"Modified (format): / 23-01-2013 / 09:56:53 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
|
581 |
! |
|
582 |
||
583 |
initializeEncoderClassesByName |
|
584 |
"initialize the dictionary which maps commonly used names |
|
585 |
to encoder classes. |
|
586 |
This is done, because some encodings come along |
|
587 |
with different names" |
|
588 |
||
589 |
|ud| |
|
590 |
||
| 8126 | 591 |
EncoderClassesByName := Dictionary new. |
| 7972 | 592 |
|
| 8154 | 593 |
EncoderClassesByName at:#'unicode' put:(ud := Dictionary new). |
594 |
ud at:#'fontspecific' put:NullEncoder. |
|
595 |
ud at:#'adobe-fontspecific' put:NullEncoder. |
|
| 8190 | 596 |
ud at:#'ms-oem' put:NullEncoder. |
| 13326 | 597 |
ud at:#'ms-default' put:NullEncoder. |
| 8152 | 598 |
|
| 17491 | 599 |
"/ className decoded-name array-of-encodingNames |
| 8118 | 600 |
#( |
| 15966 | 601 |
(ASCII unicode ( ascii 'us-ascii' 'iso-ir-6' 'ibm-367' 'ms-cp367' 'cp367' 'iso646-us' 'ibm-cp367' 'ansi_x3.4-1968' )) |
| 8118 | 602 |
|
| 8151 | 603 |
(BIG5 unicode ( big5 )) |
| 8118 | 604 |
|
| 8151 | 605 |
(CNS11643 unicode ( 'cns11643' )) |
| 8118 | 606 |
|
| 8151 | 607 |
(CP437 unicode ( 'cp437' 'cp-437' 'ibm-437' 'ms-cp437' 'microsoft-cp437' 'ibm-cp437' )) |
| 8118 | 608 |
|
|
13063
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
609 |
(EBCDIC unicode ( 'ebcdic' )) |
|
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
610 |
|
| 16054 | 611 |
"/ (GB2313_1980 unicode ( 'gb2313' 'gb2313-1980' )) |
612 |
||
613 |
(GB2312_1980_0 unicode ( 'gb2312' 'gb2312.1980' 'gb2312.1980-0')) |
|
| 8118 | 614 |
|
| 8151 | 615 |
(HANGUL unicode ( 'hangul' )) |
| 8118 | 616 |
|
| 8151 | 617 |
(ISO10646_1 unicode ( unicode 'iso10646_1' 'iso10646-1' 'iso-10646-1' )) |
| 8118 | 618 |
|
| 17491 | 619 |
(ISO10646_to_UTF8 unicode ( utf8 'utf-8' )) |
620 |
(ISO10646_to_UTF16BE unicode ( utf16b utf16be 'utf-16b' 'utf-16be' )) |
|
621 |
(ISO10646_to_UTF16LE unicode ( utf16l utf16le 'utf-16e' 'utf-16le' )) |
|
622 |
||
| 17495 | 623 |
(ISO10646_to_UTF8_MAC unicode ( 'utf8-mac' 'utf-8-mac' )) |
| 17498 | 624 |
(ISO10646_to_XMLUTF8 unicode ( 'utf8-XML' )) |
| 8118 | 625 |
|
|
8855
289b5bda04bb
guessEncoding - return the real encodings name
Claus Gittinger <cg@exept.de>
parents:
8814
diff
changeset
|
626 |
(ISO8859_1 unicode ( 'iso8859_1' 'iso8859-1' 'iso-8859-1' 'latin-1' 'latin1' 'iso-ir-100' 'ibm-819' 'ms-cp819' 'ibm-cp819' 'iso8859')) |
| 8118 | 627 |
|
| 8151 | 628 |
(ISO8859_2 unicode ( 'iso8859_2' 'iso8859-2' 'iso-8859-2' 'latin2' 'latin-2' 'iso-ir-101')) |
| 8118 | 629 |
|
| 8151 | 630 |
(ISO8859_3 unicode ( 'iso8859_3' 'iso8859-3' 'iso-8859-3' 'latin3' 'latin-3' 'iso-ir-109')) |
| 8118 | 631 |
|
| 8151 | 632 |
(ISO8859_4 unicode ( 'iso8859_4' 'iso8859-4' 'iso-8859-4' 'latin4' 'latin-4' 'iso-ir-110')) |
| 8118 | 633 |
|
| 8151 | 634 |
(ISO8859_5 unicode ( 'iso8859_5' 'iso8859-5' 'iso-8859-5' 'cyrillic' 'iso-ir-144' )) |
| 8118 | 635 |
|
| 8151 | 636 |
(ISO8859_6 unicode ( 'iso8859_6' 'iso8859-6' 'iso-8859-6' 'arabic' 'asmo-708' 'ecma-114' 'iso-ir-127' )) |
| 8118 | 637 |
|
| 8151 | 638 |
(ISO8859_7 unicode ( 'iso8859_7' 'iso8859-7' 'iso-8859-7' 'greek' 'iso-ir-126' 'ecma-118')) |
| 8118 | 639 |
|
| 8151 | 640 |
(ISO8859_8 unicode ( 'iso8859_8' 'iso8859-8' 'iso-8859-8' 'hebrew' 'iso-ir-138' )) |
| 8118 | 641 |
|
| 8151 | 642 |
(ISO8859_9 unicode ( 'iso8859_9' 'iso8859-9' 'iso-8859-9' 'latin5' 'latin-5' 'iso-ir-148')) |
| 8118 | 643 |
|
| 8151 | 644 |
(ISO8859_10 unicode ( 'iso8859_10' 'iso8859-10' 'iso-8859-10' 'latin6' 'latin-6' 'iso-ir-157')) |
| 8118 | 645 |
|
| 8151 | 646 |
(ISO8859_11 unicode ( 'iso8859_11' 'iso8859-11' 'iso-8859-11' 'thai' )) |
| 8118 | 647 |
|
| 8151 | 648 |
(ISO8859_13 unicode ( 'iso8859_13' 'iso8859-13' 'iso-8859-13' 'latin7' 'latin-7' )) |
| 8118 | 649 |
|
| 8151 | 650 |
(ISO8859_14 unicode ( 'iso8859_14' 'iso8859-14' 'iso-8859-14' 'latin8' 'latin-8' 'latin-celtic' )) |
| 8118 | 651 |
|
| 8151 | 652 |
(ISO8859_15 unicode ( 'iso8859_15' 'iso8859-15' 'iso-8859-15' 'latin9' 'latin-9' 'iso-ir-203')) |
| 8118 | 653 |
|
| 8151 | 654 |
(ISO8859_16 unicode ( 'iso8859_16' 'iso8859-16' 'iso-8859-16' 'latin10' 'latin-10' )) |
| 8118 | 655 |
|
| 8151 | 656 |
(JIS0201 unicode ( 'jis0201' #'jisx0201.1976-0')) |
| 8118 | 657 |
|
| 8151 | 658 |
(JIS0208 unicode ( jis0208 'jisx0208' 'jisx0208.1983-0' 'jisx0208.1990-0')) |
| 8118 | 659 |
|
| 8151 | 660 |
(JIS0208_to_JIS7 jis0208 ( jis7 'jis-7' 'x-jis7' 'x-iso2022-jp' 'iso2022-jp')) |
| 8118 | 661 |
|
| 8151 | 662 |
(JIS0208_to_EUC jis0208 ( euc #'x-euc-jp' )) |
| 8122 | 663 |
|
| 8176 | 664 |
(JIS0208_to_SJIS jis0208 ( 'sjis' 'shiftjis' 'x-sjis' #'x-shift-jis' #'shift-jis')) |
665 |
||
| 8151 | 666 |
(JIS0212 unicode ( 'jis0212' )) |
| 8118 | 667 |
|
| 8151 | 668 |
(JOHAB unicode ( 'johab' )) |
| 8118 | 669 |
|
| 8151 | 670 |
(KOI7 unicode ( 'koi7' )) |
| 8118 | 671 |
|
| 8151 | 672 |
(KOI8_R unicode ( #'koi8-r' 'cp878' )) |
| 8118 | 673 |
|
| 8151 | 674 |
(KOI8_U unicode ( #'koi8-u' )) |
| 8118 | 675 |
|
| 8151 | 676 |
(KSC5601 unicode ( #'ksc5601' )) |
| 8118 | 677 |
|
| 8151 | 678 |
(MAC_Arabic unicode ( #'mac-arabic' 'macarabic' )) |
| 8118 | 679 |
|
| 8151 | 680 |
(MAC_CentralEuropean unicode ( #'mac-centraleuropean' #'mac-centraleurope' 'maccentraleurope' 'maccentraleuropean' )) |
| 8118 | 681 |
|
| 8151 | 682 |
(MAC_Croatian unicode ( #'mac-croatian' 'maccroatian')) |
| 8118 | 683 |
|
| 8151 | 684 |
(MAC_Cyrillic unicode ( #'mac-cyrillic' 'maccyrillic' )) |
| 8118 | 685 |
|
| 8151 | 686 |
(MAC_Dingbats unicode ( #'mac-dingbats' 'macdingbats' 'macdingbat')) |
| 8118 | 687 |
|
| 8151 | 688 |
(MAC_Farsi unicode ( #'mac-farsi' 'macfarsi' )) |
| 8118 | 689 |
|
| 8151 | 690 |
(MAC_Greek unicode ( #'mac-greek' #'macgreek' )) |
| 8118 | 691 |
|
| 8151 | 692 |
(MAC_Hebrew unicode ( #'mac-hebrew' #'machebrew' )) |
| 8118 | 693 |
|
| 8151 | 694 |
(MAC_Iceland unicode ( #'mac-iceland' #'maciceland' )) |
| 8118 | 695 |
|
| 8151 | 696 |
(MAC_Japanese unicode ( #'mac-japanese' #'macjapanese' )) |
| 8118 | 697 |
|
| 8151 | 698 |
(MAC_Korean unicode ( #'mac-korean' #'mackorean' )) |
| 8118 | 699 |
|
| 16522 | 700 |
(MAC_Roman unicode ( #'mac-roman' #'macroman' 'macintosh' 'cp10000' )) |
| 8118 | 701 |
|
| 8151 | 702 |
(MAC_Romanian unicode ( #'mac-romanian' #'macromanian' )) |
| 8118 | 703 |
|
| 8151 | 704 |
(MAC_Symbol unicode ( #'mac-symbol' #'macsymbol' )) |
| 8118 | 705 |
|
| 8151 | 706 |
(MAC_Thai unicode ( #'mac-thai' #'macthai' )) |
| 8118 | 707 |
|
| 8151 | 708 |
(MAC_Turkish unicode ( #'mac-turkish' #'macturkish' )) |
| 8118 | 709 |
|
| 8151 | 710 |
(MS_Ansi unicode ( #'ms-ansi' 'ms-cp1252' 'microsoft-cp1252' 'cp1252' 'microsoft-ansi' 'windows-1252' 'windows-latin1')) |
| 8118 | 711 |
|
| 8151 | 712 |
(MS_Arabic unicode ( 'ms-arabic' 'ms-cp1256' 'microsoft-cp1256' 'cp1256' 'microsoft-arabic' 'windows-1256' )) |
| 8118 | 713 |
|
| 8151 | 714 |
(MS_Baltic unicode ( 'ms-baltic' 'ms-cp1257' 'microsoft-cp1257' 'cp1257' 'microsoft-baltic' 'windows-1257' )) |
| 8118 | 715 |
|
| 8151 | 716 |
(MS_Cyrillic unicode ( 'ms-cyrillic' 'ms-cp1251' 'microsoft-cp1251' 'cp1251' 'microsoft-cyrillic' 'windows-1251' )) |
| 8118 | 717 |
|
| 8151 | 718 |
(MS_EastEuropean unicode ( 'ms-easteuropean' 'ms-ee' 'cp1250' 'ms-cp1250' 'microsoft-cp1250' 'microsoft-easteuropean' 'windows-1250' )) |
| 8118 | 719 |
|
| 8151 | 720 |
(MS_Greek unicode ( 'ms-greek' 'ms-cp1253' 'microsoft-cp1253' 'cp1253' 'microsoft-greek' 'windows-1253' )) |
| 8118 | 721 |
|
| 8151 | 722 |
(MS_Hebrew unicode ( 'ms-hebrew' 'ms-cp1255' 'microsoft-cp1255' 'cp1255' 'microsoft-hebrew' 'windows-1255' )) |
| 8118 | 723 |
|
724 |
"/ (MS_Symbol unicode ( 'ms-symbol' 'microsoft-symbol' )) |
|
725 |
||
| 8151 | 726 |
(MS_Turkish unicode ( 'ms-turkish' 'ms-cp1254' 'microsoft-cp1254' 'cp1254' 'microsoft-turkish' 'windows-1254' )) |
| 8118 | 727 |
|
| 8151 | 728 |
(NEXT unicode ( 'next' 'nextstep' )) |
| 8186 | 729 |
|
| 10111 | 730 |
(ISO10646_to_SGML unicode ( 'sgml' )) |
731 |
(ISO10646_to_JavaText unicode ( 'java' 'javaText' )) |
|
| 8118 | 732 |
) triplesDo:[:className :decodesTo :encodesTo | |
| 8151 | 733 |
|dict| |
| 8134 | 734 |
|
| 8151 | 735 |
"/ notice that the encoders are not yet installed as autoloaded. |
736 |
"/ Therefore, we remember their names here. |
|
737 |
dict := EncoderClassesByName at:decodesTo ifAbsent:nil. |
|
738 |
dict isNil ifTrue:[ |
|
739 |
EncoderClassesByName at:decodesTo put:(dict := Dictionary new). |
|
740 |
]. |
|
741 |
encodesTo do:[:eachEncodingAlias | |
|
742 |
(dict includesKey:eachEncodingAlias) ifTrue:[ |
|
743 |
self halt:'conflicting alias' |
|
744 |
]. |
|
745 |
dict at:eachEncodingAlias put:className. |
|
746 |
]. |
|
| 8118 | 747 |
]. |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
748 |
|
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
749 |
" |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
750 |
self initialize |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
751 |
" |
| 10111 | 752 |
|
| 13326 | 753 |
"Modified: / 01-04-2011 / 14:30:06 / cg" |
| 15966 | 754 |
"Modified (format): / 23-01-2013 / 09:56:53 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
| 7892 | 755 |
! ! |
756 |
||
| 8122 | 757 |
!CharacterEncoder class methodsFor:'constants'! |
758 |
||
759 |
jis7KanjiEscapeSequence |
|
760 |
"return the escape sequence used to switch to kanji in jis7 encoded strings. |
|
761 |
This happens to be the same as ISO2022-JP's escape sequence." |
|
762 |
||
763 |
Jis7KanjiEscapeSequence isNil ifTrue:[ |
|
| 14209 | 764 |
Jis7KanjiEscapeSequence := Character esc asString , '$B'. |
| 8122 | 765 |
]. |
766 |
^ Jis7KanjiEscapeSequence. |
|
767 |
||
768 |
"Created: 26.2.1996 / 17:38:08 / cg" |
|
769 |
"Modified: 30.6.1997 / 16:03:16 / cg" |
|
770 |
! |
|
771 |
||
772 |
jis7KanjiOldEscapeSequence |
|
773 |
"return the escape sequence used to switch to kanji in some old jis7 encoded strings." |
|
774 |
||
775 |
Jis7KanjiOldEscapeSequence isNil ifTrue:[ |
|
| 8856 | 776 |
Jis7KanjiOldEscapeSequence := Character esc asString , '$@'. |
| 8122 | 777 |
]. |
778 |
^ Jis7KanjiOldEscapeSequence. |
|
779 |
! |
|
780 |
||
781 |
jis7RomanEscapeSequence |
|
782 |
"return the escape sequence used to switch to roman in jis7 encoded strings" |
|
783 |
||
784 |
Jis7RomanEscapeSequence isNil ifTrue:[ |
|
| 14209 | 785 |
Jis7RomanEscapeSequence := Character esc asString , '(J'. |
| 8122 | 786 |
]. |
787 |
^ Jis7RomanEscapeSequence. |
|
788 |
||
789 |
"Created: 26.2.1996 / 17:38:08 / cg" |
|
790 |
"Modified: 30.6.1997 / 16:03:16 / cg" |
|
791 |
! |
|
792 |
||
793 |
jisISO2022EscapeSequence |
|
794 |
"return the escape sequence used to switch to kanji in iso2022 encoded strings" |
|
795 |
||
796 |
JisISO2022EscapeSequence isNil ifTrue:[ |
|
| 14209 | 797 |
JisISO2022EscapeSequence := Character esc asString , '&@' , Character esc asString , '$B'. |
| 8122 | 798 |
]. |
799 |
^ JisISO2022EscapeSequence. |
|
800 |
! ! |
|
801 |
||
| 7892 | 802 |
!CharacterEncoder class methodsFor:'encoding & decoding'! |
803 |
||
804 |
decode:aCodePoint |
|
805 |
^ self new decode:aCodePoint |
|
806 |
! |
|
807 |
||
808 |
decodeString:aString |
|
809 |
^ self new decodeString:aString |
|
810 |
! |
|
811 |
||
| 7972 | 812 |
decodeString:aString from:oldEncoding |
| 8016 | 813 |
^ self encodeString:aString from:oldEncoding into:#'unicode' |
| 7967 | 814 |
! |
815 |
||
| 7892 | 816 |
encode:aCodePoint |
817 |
^ self new encode:aCodePoint |
|
818 |
||
819 |
" |
|
820 |
ISO8859_1 encode:16r00FF |
|
821 |
ISO8859_1 decodeString:'hello' |
|
822 |
ISO8859_1 encodeString:(ISO8859_1 decodeString:'hello') |
|
823 |
||
824 |
ISO8859_5 decodeString:(String |
|
| 14209 | 825 |
with:(Character value:16rE4) |
826 |
with:(Character value:16rE0)) |
|
| 7892 | 827 |
" |
828 |
! |
|
829 |
||
| 7994 | 830 |
encode:codePoint from:oldEncodingArg into:newEncodingArg |
| 8015 | 831 |
|oldEncoding newEncoding encoder| |
| 7994 | 832 |
|
833 |
oldEncoding := oldEncodingArg ? #'unicode'. |
|
834 |
oldEncoding == #'iso10646-1' ifTrue:[ oldEncoding := #'unicode']. |
|
835 |
newEncoding := newEncodingArg ? #'unicode'. |
|
836 |
newEncoding == #'iso10646-1' ifTrue:[ newEncoding := #'unicode']. |
|
837 |
||
838 |
oldEncoding == newEncoding ifTrue:[^ codePoint]. |
|
839 |
||
| 8016 | 840 |
oldEncoding == #'unicode' ifTrue:[ |
| 14209 | 841 |
newEncoding == #'iso8859-1' ifTrue:[ |
842 |
codePoint <= 16rFF ifTrue:[ |
|
843 |
^ codePoint |
|
844 |
] |
|
845 |
] |
|
| 8016 | 846 |
]. |
847 |
newEncoding == #'unicode' ifTrue:[ |
|
| 14209 | 848 |
oldEncoding == #'iso8859-1' ifTrue:[ |
849 |
codePoint <= 16rFF ifTrue:[ |
|
850 |
^ codePoint |
|
851 |
] |
|
852 |
] |
|
| 8016 | 853 |
]. |
| 8118 | 854 |
encoder := self encoderToEncodeFrom:oldEncoding into:newEncoding. |
| 8015 | 855 |
^ encoder encode:codePoint. |
| 7994 | 856 |
! |
857 |
||
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
858 |
encodeString:aUnicodeString |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
859 |
"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
|
860 |
|
| 7912 | 861 |
^ self new encodeString:aUnicodeString |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
862 |
|
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
863 |
" |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
864 |
ISO8859_1 decodeString:'hello' |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
865 |
" |
| 7914 | 866 |
! |
867 |
||
| 7967 | 868 |
encodeString:aString from:oldEncodingArg into:newEncodingArg |
| 8015 | 869 |
|oldEncoding newEncoding encoder| |
| 7967 | 870 |
|
| 14916 | 871 |
"/ some hard coded aliases |
| 7967 | 872 |
oldEncoding := oldEncodingArg ? #'unicode'. |
| 7972 | 873 |
oldEncoding == #'iso10646-1' ifTrue:[ oldEncoding := #'unicode']. |
| 14916 | 874 |
oldEncoding == #'ms-default' ifTrue:[ oldEncoding := #'unicode']. |
875 |
||
| 7967 | 876 |
newEncoding := newEncodingArg ? #'unicode'. |
| 7972 | 877 |
newEncoding == #'iso10646-1' ifTrue:[ newEncoding := #'unicode']. |
| 14916 | 878 |
newEncoding == #'ms-default' ifTrue:[ newEncoding := #'unicode']. |
| 7972 | 879 |
|
| 7967 | 880 |
oldEncoding == newEncoding ifTrue:[^ aString]. |
881 |
||
| 14916 | 882 |
"/ for single-byte strings, iso8859-1 and unicode (up to FF) have the same encoding |
| 8016 | 883 |
oldEncoding == #'unicode' ifTrue:[ |
| 14916 | 884 |
(newEncoding == #'iso8859-1') ifTrue:[ |
| 14559 | 885 |
aString isWideString ifFalse:[ |
| 14209 | 886 |
^ aString |
887 |
] |
|
| 14916 | 888 |
]. |
| 8016 | 889 |
]. |
890 |
newEncoding == #'unicode' ifTrue:[ |
|
| 14916 | 891 |
(oldEncoding == #'iso8859-1') ifTrue:[ |
| 14559 | 892 |
aString isWideString ifFalse:[ |
| 14209 | 893 |
^ aString |
894 |
] |
|
895 |
] |
|
| 8016 | 896 |
]. |
897 |
||
| 8118 | 898 |
encoder := self encoderToEncodeFrom:oldEncoding into:newEncoding. |
| 8015 | 899 |
^ encoder encodeString:aString. |
| 7972 | 900 |
! |
901 |
||
902 |
encodeString:aString into:newEncoding |
|
| 8016 | 903 |
^ self encodeString:aString from:#'unicode' into:newEncoding |
|
13063
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
904 |
|
|
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
905 |
" |
|
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
906 |
self encodeString:'hello' into:#ebcdic |
|
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
907 |
|
|
a17ba204b911
comment/format in: #encodeString:into:
Claus Gittinger <cg@exept.de>
parents:
12608
diff
changeset
|
908 |
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
|
909 |
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
|
910 |
" |
| 7892 | 911 |
! ! |
912 |
||
913 |
!CharacterEncoder class methodsFor:'private'! |
|
914 |
||
915 |
flushCode |
|
| 8127 | 916 |
self initialize. |
| 7914 | 917 |
|
| 7892 | 918 |
self isAbstract ifFalse:[ |
| 14209 | 919 |
(self mapFileURL1_relativePathName notNil |
920 |
or:[ self mapFileURL2_relativePathName notNil]) ifTrue:[ |
|
921 |
self class removeSelector:#mapping. |
|
922 |
]. |
|
| 7892 | 923 |
]. |
924 |
||
925 |
" |
|
926 |
self flushCode |
|
927 |
" |
|
928 |
! ! |
|
929 |
||
930 |
!CharacterEncoder class methodsFor:'private-mapping setup'! |
|
931 |
||
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
932 |
generateCode |
| 7909 | 933 |
(CharacterEncoderCodeGenerator new targetClass:self) generateCode. |
934 |
! |
|
935 |
||
936 |
generateSubclassCode |
|
937 |
(CharacterEncoderCodeGenerator new targetClass:self) generateSubclassCode. |
|
| 7892 | 938 |
! |
939 |
||
| 7914 | 940 |
mapFileURL1_codeColumn |
941 |
^ 1 |
|
942 |
! |
|
943 |
||
| 7912 | 944 |
mapFileURL1_relativePathName |
945 |
"raise an error: must be redefined in concrete subclass(es)" |
|
946 |
||
947 |
^ nil |
|
948 |
! |
|
949 |
||
950 |
mapFileURL2_relativePathName |
|
951 |
"raise an error: must be redefined in concrete subclass(es)" |
|
952 |
||
953 |
^ nil |
|
954 |
! |
|
955 |
||
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
956 |
mappingURL1 |
| 7892 | 957 |
"raise an error: must be redefined in concrete subclass(es)" |
| 7912 | 958 |
|
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
959 |
|rel| |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
960 |
|
| 7912 | 961 |
rel := self mapFileURL1_relativePathName. |
962 |
rel isNil ifTrue:[ |
|
| 14209 | 963 |
^ nil |
| 7912 | 964 |
]. |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
965 |
^ 'http://www.unicode.org/Public/MAPPINGS/' , rel |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
966 |
! |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
967 |
|
| 7892 | 968 |
mappingURL2 |
969 |
"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
|
970 |
|
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
971 |
|rel| |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
972 |
|
| 7912 | 973 |
rel := self mapFileURL2_relativePathName. |
974 |
rel isNil ifTrue:[ |
|
| 14209 | 975 |
^ nil |
| 7912 | 976 |
]. |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
977 |
^ 'http://std.dkuug.dk/i18n/charmaps/' , rel |
| 7892 | 978 |
! ! |
979 |
||
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
980 |
!CharacterEncoder class methodsFor:'queries'! |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
981 |
|
| 19465 | 982 |
isAbstract |
983 |
"Return if this class is an abstract class. |
|
984 |
True is returned for CharacterEncoder here; false for subclasses. |
|
985 |
Abstract subclasses must redefine this again." |
|
986 |
||
987 |
^ self == CharacterEncoder |
|
988 |
! |
|
989 |
||
| 7938 | 990 |
isEncoding:subSetEncodingArg subSetOf:superSetEncodingArg |
| 7994 | 991 |
"return true, if superSetEncoding encoding includes all characters of subSetEncoding. |
992 |
(this means: characters are included - not that they have the same encoding)" |
|
| 7938 | 993 |
|
994 |
|subSetEncoding superSetEncoding| |
|
995 |
||
996 |
subSetEncodingArg = superSetEncodingArg ifTrue:[^ true]. |
|
997 |
subSetEncoding := subSetEncodingArg asLowercase. |
|
998 |
superSetEncoding := superSetEncodingArg asLowercase. |
|
999 |
||
1000 |
(subSetEncoding match:superSetEncoding) ifTrue:[^ true]. |
|
1001 |
||
|
8214
406c7fc10e12
assume ms-ansi is same as unicode
Claus Gittinger <cg@exept.de>
parents:
8211
diff
changeset
|
1002 |
(('iso10646*' match:superSetEncoding)
|
|
406c7fc10e12
assume ms-ansi is same as unicode
Claus Gittinger <cg@exept.de>
parents:
8211
diff
changeset
|
1003 |
or:[superSetEncoding = 'unicode' |
|
406c7fc10e12
assume ms-ansi is same as unicode
Claus Gittinger <cg@exept.de>
parents:
8211
diff
changeset
|
1004 |
or:[superSetEncoding = 'ms-ansi']]) ifTrue:[ |
|
406c7fc10e12
assume ms-ansi is same as unicode
Claus Gittinger <cg@exept.de>
parents:
8211
diff
changeset
|
1005 |
"/ assume that any character is in unicode |
|
406c7fc10e12
assume ms-ansi is same as unicode
Claus Gittinger <cg@exept.de>
parents:
8211
diff
changeset
|
1006 |
^ true. |
| 7938 | 1007 |
]. |
1008 |
||
1009 |
"/ if the subSet is iso8859-*, that means ascii (i.e. the lower 7 bits of iso8859 only). |
|
1010 |
((subSetEncoding = 'iso8859*') or:[subSetEncoding = 'iso8859-*']) ifTrue:[ |
|
| 8168 | 1011 |
('ascii*' match:superSetEncoding) ifTrue:[^ true].
|
1012 |
('ms-ansi*' match:superSetEncoding) ifTrue:[^ true].
|
|
| 7938 | 1013 |
]. |
1014 |
(subSetEncoding = 'ascii') ifTrue:[ |
|
| 8168 | 1015 |
('iso8859*' match:superSetEncoding) ifTrue:[^ true].
|
1016 |
('ms-ansi*' match:superSetEncoding) ifTrue:[^ true].
|
|
| 7938 | 1017 |
]. |
1018 |
||
| 7923 | 1019 |
"/ TODO: check the charSets mappingTables... |
1020 |
"/ self halt. |
|
1021 |
^ false. |
|
1022 |
! |
|
1023 |
||
| 7919 | 1024 |
nameOfDecodedCode |
1025 |
"Most coders decode from their code into unicode / encode from unicode into their code. |
|
1026 |
There are a few exceptions to this, though - these must redefine this." |
|
1027 |
||
1028 |
^ #'unicode' |
|
1029 |
! |
|
1030 |
||
1031 |
nameOfEncoding |
|
| 7974 | 1032 |
^ (self nameWithoutPrefix asLowercase copyReplaceAll:$_ with:$-) asSymbol |
| 7919 | 1033 |
! |
1034 |
||
| 7959 | 1035 |
supportedExternalEncodings |
1036 |
"return an array of arrays containing the names of supported |
|
1037 |
encodings which are supported for external resources (i.e. files). |
|
1038 |
The first element contains the internally used symbolic name, |
|
1039 |
the second contains a user-readable string (description). |
|
1040 |
More than one external name may be mapped onto the same symbolic." |
|
1041 |
||
1042 |
^ #( |
|
| 8176 | 1043 |
('utf8' 'Unicode as 8Bit characters' )
|
| 8904 | 1044 |
('utf16BE' 'Unicode as 16Bit big-endian' )
|
1045 |
('utf16LE' 'Unicode as 16Bit little-endian' )
|
|
| 8176 | 1046 |
"/ ('utf7' 'Unicode as 7Bit characters' )
|
1047 |
"/ nil |
|
1048 |
('ascii' 'Common 7bit subset of iso8859' )
|
|
| 14188 | 1049 |
('iso8859-1' 'Western' )
|
1050 |
('iso8859-2' 'Central European' )
|
|
1051 |
('iso8859-3' 'South European' )
|
|
1052 |
('iso8859-4' 'Baltic' )
|
|
| 8176 | 1053 |
('iso8859-5' 'Cyrillic' )
|
1054 |
('iso8859-6' 'Arabic' )
|
|
1055 |
('iso8859-7' 'Greek' )
|
|
1056 |
('iso8859-8' 'Hebrew' )
|
|
| 14188 | 1057 |
('iso8859-15' 'Western with Euro' )
|
1058 |
('iso8859-16' 'South European with Euro' )
|
|
| 8176 | 1059 |
"/ nil |
| 16522 | 1060 |
('macintosh' 'MAC Western' )
|
1061 |
"/ nil |
|
| 8176 | 1062 |
('koi7' 'Cyrillic (Old)' )
|
1063 |
('koi8-r' 'Cyrillic' )
|
|
1064 |
('koi8-u' 'Cyrillic (Ukraine)' )
|
|
1065 |
"/ nil |
|
| 14188 | 1066 |
('cp437' 'Windows US / codepage 437' )
|
1067 |
('cp850' 'Windows Latin1 / codepage 850' )
|
|
1068 |
('cp1250' 'Windows Latin2 / codepage 1250' )
|
|
1069 |
('cp1251' 'Windows Cyrillic / codepage 1251')
|
|
| 8176 | 1070 |
"/ ('mac' 'macintosh 8 bit' )
|
1071 |
('next' 'NeXT 8 bit' )
|
|
1072 |
"/ ('hp' 'hpux 8 bit' )
|
|
1073 |
"/ nil |
|
1074 |
('euc' 'EUC - extended unix code (japanese)' )
|
|
1075 |
('jis7' 'JIS7 - jis 7bit escape codes (japanese)' )
|
|
1076 |
('iso-2022-jp' 'Same as jis 7bit' )
|
|
1077 |
('sjis' 'SJIS - shift jis 8bit codes (japanese)' )
|
|
1078 |
"/ nil |
|
1079 |
('gb' 'GB - mainland china' )
|
|
1080 |
('big5' 'BIG5 - taiwan' )
|
|
| 7959 | 1081 |
"/ ('ksc' 'korean' )
|
| 8186 | 1082 |
('sgml' 'SGML (XML/HTML) character escapes' )
|
| 10111 | 1083 |
('java' 'JavaText (\uXXXX) character escapes' )
|
| 7959 | 1084 |
) |
| 10111 | 1085 |
|
1086 |
"Modified: / 23-10-2006 / 13:27:48 / cg" |
|
| 7959 | 1087 |
! |
1088 |
||
| 7947 | 1089 |
userFriendlyNameOfEncoding |
| 7972 | 1090 |
^ self nameOfEncoding asUppercaseFirst |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1091 |
! ! |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1092 |
|
|
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1093 |
!CharacterEncoder class methodsFor:'utilities'! |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1094 |
|
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1095 |
guessEncodingOfBuffer:buffer |
| 19465 | 1096 |
"try to guess a string-buffer's encoding. |
1097 |
Basically looks for a string of the form |
|
|
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1098 |
encoding #name |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1099 |
or: |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1100 |
encoding: name |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1101 |
within the given buffer |
| 19465 | 1102 |
(which is usually within the first few bytes of a textFile)." |
|
14169
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1103 |
|
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1104 |
buffer size < 4 ifTrue:[ |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1105 |
"not enough bytes to determine the contents" |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1106 |
^ nil. |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1107 |
]. |
| 19465 | 1108 |
EncodingDetectors isNil ifTrue:[ |
1109 |
self initializeEncodingDetectors. |
|
1110 |
]. |
|
1111 |
EncodingDetectors do:[:each | |
|
1112 |
|guess| |
|
|
10672
b6230a13035b
#guessEncodingOfBuffer - do NOT handle encoding=utf8
Stefan Vogel <sv@exept.de>
parents:
10111
diff
changeset
|
1113 |
|
| 19465 | 1114 |
(guess := each value:buffer) notNil ifTrue:[ |
1115 |
^ guess |
|
|
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1116 |
]. |
| 19465 | 1117 |
]. |
|
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1118 |
^ nil |
|
14169
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1119 |
! |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1120 |
|
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1121 |
guessEncodingOfFile:aFilename |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1122 |
"look for a string |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1123 |
encoding #name |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1124 |
or: |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1125 |
encoding: name |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1126 |
within the given buffer |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1127 |
(which is usually the first few bytes of a textFile). |
| 20403 | 1128 |
If that's not found, use heuristics (in CharacterArray) to guess. |
| 18762 | 1129 |
Return a symbol like #utf8." |
|
14169
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1130 |
|
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1131 |
|s buffer n "{Class: SmallInteger }"|
|
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1132 |
|
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1133 |
s := aFilename asFilename readStreamOrNil. |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1134 |
s isNil ifTrue:[^ nil]. |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1135 |
|
| 20645 | 1136 |
buffer := String new:512. |
|
14169
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1137 |
n := s nextBytes:buffer size into:buffer. |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1138 |
s close. |
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1139 |
|
|
eab487f07a2b
comment/format in: #encoderFor:
Stefan Vogel <sv@exept.de>
parents:
14094
diff
changeset
|
1140 |
^ self guessEncodingOfBuffer:buffer. |
|
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1141 |
|
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1142 |
" |
| 14094 | 1143 |
self guessEncodingOfFile:'../../libview/resources/de.rs' asFilename |
1144 |
self guessEncodingOfFile:'../../libview/resources/ru.rs' asFilename |
|
1145 |
self guessEncodingOfFile:'../../libview/resources/th.rs' asFilename |
|
|
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1146 |
" |
| 13382 | 1147 |
|
1148 |
"Modified: / 31-05-2011 / 15:45:19 / cg" |
|
|
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1149 |
! |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1150 |
|
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1151 |
guessEncodingOfStream:aStream |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1152 |
"look for a string of the form |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1153 |
encoding #name |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1154 |
or: |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1155 |
encoding: name |
| 18762 | 1156 |
in the first few bytes of aStream. |
1157 |
Return a symbol like #utf8." |
|
|
8711
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 |
|oldPosition buffer n| |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1160 |
|
| 20645 | 1161 |
"/ must be able to position back |
1162 |
aStream isPositionable ifFalse:[^ nil]. |
|
1163 |
||
1164 |
buffer := String new:512. |
|
|
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1165 |
|
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1166 |
oldPosition := aStream position. |
| 14094 | 1167 |
n := aStream nextBytes:buffer size into:buffer. |
|
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1168 |
aStream position:oldPosition. |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1169 |
|
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1170 |
^ self guessEncodingOfBuffer:buffer |
| 13382 | 1171 |
|
1172 |
"Modified: / 31-05-2011 / 15:45:23 / cg" |
|
| 8810 | 1173 |
! |
1174 |
||
| 19465 | 1175 |
initializeEncodingDetectors |
1176 |
"setup the list of encoding detectors. |
|
1177 |
This is a list of blocks, which get a buffer as argument, |
|
1178 |
and return an encoding symbol or nil. |
|
1179 |
Can be customized for more detectors |
|
1180 |
(used to be hard-coded in guessEncodingOfBuffer:)" |
|
1181 |
||
1182 |
EncodingDetectors := OrderedCollection new. |
|
1183 |
||
1184 |
"check for Unicode Byte Order Marks (BOM)" |
|
1185 |
EncodingDetectors |
|
1186 |
add:[:buffer | |
|
1187 |
|guess byte1 byte2| |
|
1188 |
||
1189 |
byte1 := (buffer at:1) codePoint. |
|
1190 |
byte2 := (buffer at:2) codePoint. |
|
1191 |
byte1 < 16rFE ifTrue:[ |
|
1192 |
(byte1 = 16rEF |
|
1193 |
and:[byte2 = 16rBB |
|
1194 |
and:[(buffer at:3) codePoint = 16rBF]]) ifTrue:[ |
|
1195 |
guess := #utf8 |
|
1196 |
] ifFalse:[ |
|
1197 |
(byte1 = 0 |
|
1198 |
and:[byte2 = 0 |
|
1199 |
and:[(buffer at:3) codePoint = 16rFE |
|
1200 |
and:[(buffer at:4) codePoint = 16rFF]]]) ifTrue:[ |
|
1201 |
"00-00-FE-FF big endian utf32" |
|
1202 |
guess := #utf32be |
|
1203 |
]. |
|
1204 |
] |
|
1205 |
] ifFalse:[ |
|
1206 |
byte1 = 16rFF ifTrue:[ |
|
1207 |
byte2 = 16rFE ifTrue:[ |
|
1208 |
"FF-FE little endian utf16 or utf32" |
|
1209 |
((buffer at:3) codePoint = 0 and:[(buffer at:4) codePoint = 0]) ifTrue:[ |
|
1210 |
"FF-FE-00-00 little endian utf32" |
|
1211 |
guess := #utf32le. |
|
1212 |
] ifFalse:[ |
|
1213 |
guess := #utf16le |
|
1214 |
] |
|
1215 |
]. |
|
1216 |
] ifFalse:["byte1 = 16rFE" |
|
1217 |
"FE-FF big endian utf16" |
|
1218 |
byte2 = 16rFF ifTrue:[ |
|
1219 |
"big endian" |
|
1220 |
guess := #utf16be |
|
1221 |
]. |
|
1222 |
] |
|
1223 |
]. |
|
1224 |
guess |
|
1225 |
]. |
|
1226 |
||
1227 |
"check for an inline encoding markup (charset= / encoding=) substring" |
|
1228 |
EncodingDetectors |
|
1229 |
add:[:buffer | |
|
1230 |
|guess lcBuffer quote peek| |
|
1231 |
||
1232 |
lcBuffer := buffer asLowercase. |
|
1233 |
||
1234 |
guess := |
|
1235 |
#(charset encoding) doWithExit:[:keyWord :exit | |
|
1236 |
|encoderOrNil idx s w enc| |
|
1237 |
||
1238 |
guess isNil ifTrue:[ |
|
1239 |
(idx := lcBuffer findString:keyWord) ~~ 0 ifTrue:[ |
|
1240 |
s := ReadStream on:buffer. |
|
1241 |
s position:idx-1. |
|
1242 |
s skip:keyWord size. |
|
1243 |
s skipSeparators. |
|
1244 |
||
1245 |
"do not include '=' here, otherwise |
|
1246 |
files containing xml code (<?xml charset='utf8'> will be parsed as UTF-8" |
|
1247 |
||
1248 |
[':#=' includes:s peek] whileTrue:[ |
|
1249 |
s next. |
|
1250 |
s skipSeparators. |
|
1251 |
]. |
|
1252 |
s skipSeparators. |
|
1253 |
('"''' includes:s peek) ifTrue:[
|
|
1254 |
quote := s next. |
|
1255 |
w := s upTo:quote. |
|
1256 |
] ifFalse:[ |
|
1257 |
w := s upToElementForWhich:[:ch | ch isSeparator or:[ch == $" or:[ch == $' or:[ch == $> ]]]]. |
|
1258 |
]. |
|
1259 |
w notNil ifTrue:[ |
|
1260 |
enc := w withoutQuotes. |
|
1261 |
(enc startsWith:'x-') ifTrue:[ |
|
1262 |
enc := enc copyFrom:3. |
|
1263 |
]. |
|
1264 |
encoderOrNil := self encoderFor:enc ifAbsent:nil. |
|
1265 |
encoderOrNil notNil ifTrue:[ |
|
1266 |
exit value:(encoderOrNil nameOfEncoding) |
|
1267 |
]. |
|
1268 |
]. |
|
1269 |
]. |
|
1270 |
]. |
|
1271 |
nil |
|
1272 |
]. |
|
1273 |
guess |
|
1274 |
]. |
|
1275 |
||
1276 |
"/ check for JIS7 encoding |
|
1277 |
EncodingDetectors |
|
1278 |
add:[:buffer | |
|
1279 |
(buffer findString:self jisISO2022EscapeSequence) ~~ 0 ifTrue:[ |
|
1280 |
#'iso2020-jp' |
|
1281 |
] ifFalse:[ |
|
1282 |
(buffer findString:self jis7KanjiEscapeSequence) ~~ 0 ifTrue:[ |
|
1283 |
#jis7 |
|
1284 |
] ifFalse:[ |
|
1285 |
(buffer findString:self jis7KanjiOldEscapeSequence) ~~ 0 ifTrue:[ |
|
1286 |
#jis7 |
|
1287 |
] ifFalse:[ |
|
1288 |
nil |
|
1289 |
] |
|
1290 |
] |
|
1291 |
] |
|
1292 |
]. |
|
1293 |
||
1294 |
"/ TODO: look for EUC, SJIS etc. |
|
1295 |
"/ Disabled, due to too many false positives. |
|
1296 |
"/ if required, think about it, fix it and uncomment it |
|
1297 |
"/ EncodingDetectors |
|
1298 |
"/ add:[:buffer | |
|
1299 |
"/ |guess idx| |
|
1300 |
"/ |
|
1301 |
"/ idx := buffer |
|
1302 |
"/ findFirst:[:char | |
|
1303 |
"/ |code| |
|
1304 |
"/ code := char codePoint. |
|
1305 |
"/ code between:16rA1 and: 16rFE |
|
1306 |
"/ ]. |
|
1307 |
"/ ((idx ~~ 0) |
|
1308 |
"/ and:[ (buffer at:(idx + 1)) codePoint between:16rA1 and: 16rFE ]) |
|
1309 |
"/ ifTrue:[ |
|
1310 |
"/ guess := #euc |
|
1311 |
"/ ] ifFalse:[ |
|
1312 |
"/ "/ look for SJIS ... |
|
1313 |
"/ ] |
|
1314 |
"/ ]. |
|
1315 |
! |
|
1316 |
||
| 8810 | 1317 |
showCharacterSet |
1318 |
|font| |
|
1319 |
||
1320 |
font := View defaultFont. |
|
|
14206
70aa64d89dca
comment/format in: #showCharacterSet
Stefan Vogel <sv@exept.de>
parents:
14188
diff
changeset
|
1321 |
"/ font := (Font family:'courier' face:'medium' style:'roman' size:12 encoding:'iso10646-1'). |
| 8810 | 1322 |
|
1323 |
CharacterSetView |
|
1324 |
openOn:font |
|
1325 |
label:'Characters of ',self nameWithoutPrefix |
|
1326 |
clickLabel:nil |
|
1327 |
asInputFor:nil |
|
1328 |
encoder:self |
|
1329 |
||
1330 |
" |
|
|
14206
70aa64d89dca
comment/format in: #showCharacterSet
Stefan Vogel <sv@exept.de>
parents:
14188
diff
changeset
|
1331 |
CharacterEncoderImplementations::MS_Ansi showCharacterSet |
| 19465 | 1332 |
CharacterEncoderImplementations::ISO8859_1 showCharacterSet |
1333 |
CharacterEncoderImplementations::ISO8859_2 showCharacterSet |
|
1334 |
CharacterEncoderImplementations::ISO8859_3 showCharacterSet |
|
1335 |
CharacterEncoderImplementations::ISO8859_4 showCharacterSet |
|
1336 |
CharacterEncoderImplementations::ISO8859_5 showCharacterSet |
|
1337 |
CharacterEncoderImplementations::ISO8859_6 showCharacterSet |
|
1338 |
CharacterEncoderImplementations::ISO8859_7 showCharacterSet |
|
1339 |
CharacterEncoderImplementations::ISO8859_8 showCharacterSet |
|
1340 |
CharacterEncoderImplementations::ISO8859_9 showCharacterSet |
|
| 8810 | 1341 |
" |
|
8711
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1342 |
! ! |
|
c5f28b4c719d
guessEncoding now implemented in CharacterEncoder
Claus Gittinger <cg@exept.de>
parents:
8388
diff
changeset
|
1343 |
|
| 7892 | 1344 |
!CharacterEncoder methodsFor:'encoding & decoding'! |
1345 |
||
1346 |
decode:anEncoding |
|
1347 |
"given an integer in my encoding, return a unicode codePoint for it" |
|
1348 |
||
| 8118 | 1349 |
self subclassResponsibility |
| 7892 | 1350 |
! |
1351 |
||
1352 |
decodeString:anEncodedString |
|
1353 |
"given a string in my encoding, return a unicode-string for it" |
|
1354 |
||
|
8150
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1355 |
|newString myCode uniCodePoint bits| |
| 8118 | 1356 |
|
1357 |
newString := String new:(anEncodedString size). |
|
|
8150
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1358 |
bits := newString bitsPerCharacter. |
| 8118 | 1359 |
|
|
8150
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1360 |
1 to:anEncodedString size do:[:idx | |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1361 |
uniCodePoint := (anEncodedString at:idx) codePoint. |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1362 |
myCode := self decode:uniCodePoint. |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1363 |
myCode > 16rFF ifTrue:[ |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1364 |
myCode > 16rFFFF ifTrue:[ |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1365 |
bits < 32 ifTrue:[ |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1366 |
newString := Unicode32String fromString:newString. |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1367 |
bits := 32. |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1368 |
] |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1369 |
] ifFalse:[ |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1370 |
bits < 16 ifTrue:[ |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1371 |
newString := Unicode16String fromString:newString. |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1372 |
bits := 16. |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1373 |
] |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1374 |
] |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1375 |
]. |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1376 |
newString at:idx put:(Character value:myCode). |
| 8118 | 1377 |
]. |
1378 |
^ newString |
|
| 7892 | 1379 |
|
1380 |
" |
|
1381 |
ISO8859_1 decodeString:'hello' |
|
1382 |
" |
|
1383 |
! |
|
1384 |
||
1385 |
encode:aCodePoint |
|
1386 |
"given a codePoint in unicode, return a byte in my encoding for it" |
|
1387 |
||
| 8118 | 1388 |
self subclassResponsibility |
| 7892 | 1389 |
! |
1390 |
||
| 21471 | 1391 |
encodeCharacter:aUnicodeCharacter on:aStream |
1392 |
"given a character in unicode, encode it onto aStream. |
|
1393 |
Subclasses can redefine this to avoid allocating many new string instances." |
|
1394 |
||
1395 |
aStream nextPutAll:(self encodeString:aUnicodeCharacter asString). |
|
1396 |
||
1397 |
"Created: / 16-02-2017 / 16:18:33 / stefan" |
|
1398 |
"Modified (comment): / 16-02-2017 / 20:41:18 / stefan" |
|
1399 |
! |
|
1400 |
||
| 7892 | 1401 |
encodeString:aUnicodeString |
1402 |
"given a string in unicode, return a string in my encoding for it" |
|
1403 |
||
| 18624 | 1404 |
|newString myCode uniCodePoint bits |
1405 |
stringSize "{ Class: SmallInteger }"|
|
|
| 8118 | 1406 |
|
| 18624 | 1407 |
stringSize := aUnicodeString size. |
1408 |
newString := String new:stringSize. |
|
|
8150
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1409 |
bits := newString bitsPerCharacter. |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1410 |
|
| 18624 | 1411 |
1 to:stringSize do:[:idx | |
|
8150
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1412 |
uniCodePoint := (aUnicodeString at:idx) codePoint. |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1413 |
myCode := self encode:uniCodePoint. |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1414 |
myCode > 16rFF ifTrue:[ |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1415 |
myCode > 16rFFFF ifTrue:[ |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1416 |
bits < 32 ifTrue:[ |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1417 |
newString := Unicode32String fromString:newString. |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1418 |
bits := 32. |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1419 |
] |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1420 |
] ifFalse:[ |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1421 |
bits < 16 ifTrue:[ |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1422 |
newString := Unicode16String fromString:newString. |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1423 |
bits := 16. |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1424 |
] |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1425 |
] |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1426 |
]. |
|
ba9c6e587973
care for bitsPerCharacter change during encodeString/decodeString.
ca
parents:
8136
diff
changeset
|
1427 |
newString at:idx put:(Character value:myCode). |
| 8118 | 1428 |
]. |
1429 |
^ newString |
|
| 17664 | 1430 |
! |
1431 |
||
1432 |
encodeString:aUnicodeString on:aStream |
|
| 18141 | 1433 |
"given a string in unicode, encode it onto aStream. |
| 18142 | 1434 |
Subclasses can redefine this to avoid allocating many new string instances. |
1435 |
(but must then also redefine encodeString:aUnicodeString to collect the characters)" |
|
| 17664 | 1436 |
|
1437 |
aStream nextPutAll:(self encodeString:aUnicodeString). |
|
| 7892 | 1438 |
! ! |
1439 |
||
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1440 |
!CharacterEncoder methodsFor:'error handling'! |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1441 |
|
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1442 |
decodingError |
| 7904 | 1443 |
"report an error that there is no unicode-codePoint for a given codePoint in this encoding. |
1444 |
(which is unlikely) or that the encoding is undefined for that value |
|
| 20004 | 1445 |
(for example, holes in the ISO-8859-3 encoding)" |
| 7904 | 1446 |
|
| 7919 | 1447 |
|badCodePoint sender| |
1448 |
||
1449 |
sender := thisContext sender. |
|
1450 |
((sender selector == #encode:) or:[sender selector == #decode:]) ifFalse:[ |
|
| 11295 | 1451 |
badCodePoint := sender methodHome argAt:1 |
| 7919 | 1452 |
]. |
| 11295 | 1453 |
^ (DecodingError new) |
1454 |
defaultValue:(self defaultDecoderValue); |
|
1455 |
parameter:badCodePoint; |
|
1456 |
messageText:'invalid code'; |
|
1457 |
suspendedContext:sender; |
|
1458 |
raiseRequest. |
|
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1459 |
! |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1460 |
|
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1461 |
defaultDecoderValue |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1462 |
"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
|
1463 |
for a given encoded codePoint. |
| 7904 | 1464 |
(typically 16rFFFF)." |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1465 |
|
| 7904 | 1466 |
^ 16rFFFF |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1467 |
! |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1468 |
|
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1469 |
defaultEncoderValue |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1470 |
"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
|
1471 |
for a given unicode codePoint. |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1472 |
(typically $?)." |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1473 |
|
|
8101
f7023a4735bf
Use the ANSI-blessed #codePoint instead of deprecated #asciiValue
Stefan Vogel <sv@exept.de>
parents:
8087
diff
changeset
|
1474 |
^ $? codePoint |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1475 |
! |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1476 |
|
| 7919 | 1477 |
encodingError |
1478 |
"report an error that some unicode-codePoint cannot be represented by this encoder" |
|
1479 |
||
1480 |
|badCodePoint sender| |
|
| 7904 | 1481 |
|
1482 |
sender := thisContext sender. |
|
1483 |
((sender selector == #encode:) or:[sender selector == #decode:]) ifFalse:[ |
|
| 14209 | 1484 |
badCodePoint := sender methodHome argAt:1 |
| 7904 | 1485 |
]. |
| 8048 | 1486 |
^ (EncodingError new) |
| 14209 | 1487 |
defaultValue:(self defaultEncoderValue); |
1488 |
parameter:badCodePoint; |
|
1489 |
messageText:'unrepresentable code (some character cannot be represented)'; |
|
1490 |
suspendedContext:sender; |
|
1491 |
raiseRequest |
|
1492 |
||
1493 |
"Modified: / 12-07-2012 / 20:36:37 / cg" |
|
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1494 |
! ! |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1495 |
|
| 7972 | 1496 |
!CharacterEncoder methodsFor:'printing'! |
1497 |
||
1498 |
printOn:aStream |
|
1499 |
aStream |
|
| 14209 | 1500 |
nextPutAll:(self nameOfDecodedCode); |
1501 |
nextPutAll:'->'; |
|
1502 |
nextPutAll:(self nameOfEncoding) |
|
| 7972 | 1503 |
! ! |
1504 |
||
| 7917 | 1505 |
!CharacterEncoder methodsFor:'queries'! |
1506 |
||
| 11975 | 1507 |
characterSize:codePoint |
1508 |
"return the number of bytes required to encode codePoint" |
|
1509 |
||
1510 |
^ self subclassResponsibility |
|
1511 |
||
1512 |
"Created: / 15-06-2005 / 15:11:04 / janfrog" |
|
1513 |
! |
|
1514 |
||
| 17118 | 1515 |
isEncoderFor:encoding |
1516 |
"does this encode to encoding?" |
|
1517 |
||
1518 |
|encodingNameSymbol| |
|
1519 |
||
1520 |
encodingNameSymbol := encoding asLowercase. |
|
1521 |
encodingNameSymbol = #'iso10646-1' ifTrue:[ encodingNameSymbol := #unicode]. |
|
1522 |
||
1523 |
^ encodingNameSymbol = self nameOfEncoding |
|
1524 |
! |
|
1525 |
||
| 7917 | 1526 |
isNullEncoder |
1527 |
^ false |
|
| 7972 | 1528 |
! |
1529 |
||
1530 |
nameOfDecodedCode |
|
1531 |
"Most coders decode from their code into unicode / encode from unicode into their code. |
|
1532 |
There are a few exceptions to this, though - these must redefine this." |
|
1533 |
||
1534 |
^ self class nameOfDecodedCode |
|
1535 |
! |
|
1536 |
||
1537 |
nameOfEncoding |
|
1538 |
^ self class nameOfEncoding |
|
1539 |
! |
|
1540 |
||
1541 |
userFriendlyNameOfEncoding |
|
1542 |
^ self class userFriendlyNameOfEncoding |
|
| 7917 | 1543 |
! ! |
1544 |
||
| 11975 | 1545 |
!CharacterEncoder methodsFor:'stream support'! |
1546 |
||
| 12608 | 1547 |
readNext:charactersToRead charactersFrom:stream |
1548 |
^ self decodeString:(stream next:charactersToRead) |
|
| 11975 | 1549 |
! |
1550 |
||
1551 |
readNextCharacterFrom:aStream |
|
| 12608 | 1552 |
|
1553 |
| c | |
|
1554 |
||
1555 |
c := aStream next. |
|
1556 |
||
1557 |
^ c isNil |
|
1558 |
ifTrue: [nil] |
|
1559 |
ifFalse: [(self decode:c asInteger) asCharacter] |
|
1560 |
||
1561 |
"Created: / 14-06-2005 / 17:03:21 / janfrog" |
|
1562 |
"Modified: / 15-06-2005 / 15:27:49 / janfrog" |
|
1563 |
"Modified: / 20-06-2005 / 13:13:52 / masca" |
|
|
12435
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1564 |
! |
| 11975 | 1565 |
|
|
12435
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1566 |
readNextInputCharacterFrom:aStream |
| 12608 | 1567 |
^ aStream next |
| 11975 | 1568 |
! ! |
1569 |
||
| 7915 | 1570 |
!CharacterEncoder::CompoundEncoder class methodsFor:'documentation'! |
| 7914 | 1571 |
|
1572 |
documentation |
|
1573 |
" |
|
1574 |
A compoundEncoder uses two real encoders; |
|
1575 |
to encode: |
|
| 14209 | 1576 |
string -> decoder(encode) -> encoder -> result |
| 7914 | 1577 |
to decode: |
| 14209 | 1578 |
string -> encoder -> decoder -> result |
| 7956 | 1579 |
|
1580 |
|e| |
|
1581 |
||
1582 |
e := CompoundEncoder new. |
|
1583 |
e encoder:ISO8859_5 decoder:KOI8_R. |
|
1584 |
e decode:16rB0. 'CYRILLIC CAPITAL LETTER A; 16rB0 in 8859-5; 16rE1 in KOI8-R'. |
|
1585 |
e encode:16rE1. |
|
| 7914 | 1586 |
" |
1587 |
! ! |
|
1588 |
||
| 7915 | 1589 |
!CharacterEncoder::CompoundEncoder methodsFor:'accessing'! |
| 7914 | 1590 |
|
1591 |
encoder:encoderArg decoder:decoderArg |
|
1592 |
"set instance variables (automatically generated)" |
|
1593 |
||
1594 |
decoder := decoderArg. |
|
1595 |
encoder := encoderArg. |
|
1596 |
! ! |
|
1597 |
||
| 7915 | 1598 |
!CharacterEncoder::CompoundEncoder methodsFor:'encoding & decoding'! |
| 7914 | 1599 |
|
| 7956 | 1600 |
decode:aCode |
1601 |
^ decoder encode:(encoder decode:aCode) |
|
1602 |
! |
|
1603 |
||
1604 |
decodeString:aString |
|
1605 |
^ decoder encodeString:(encoder decodeString:aString) |
|
1606 |
! |
|
1607 |
||
| 7914 | 1608 |
encode:aCode |
1609 |
^ encoder encode:(decoder decode:aCode) |
|
1610 |
! |
|
1611 |
||
1612 |
encodeString:aString |
|
1613 |
^ encoder encodeString:(decoder decodeString:aString) |
|
1614 |
! ! |
|
1615 |
||
| 7972 | 1616 |
!CharacterEncoder::CompoundEncoder methodsFor:'printing'! |
1617 |
||
1618 |
printOn:aStream |
|
1619 |
aStream |
|
| 14209 | 1620 |
nextPutAll:(decoder nameOfEncoding); |
1621 |
nextPutAll:'->'. |
|
| 7972 | 1622 |
"/ nextPutAll:(decoder nameOfDecodedCode); |
1623 |
"/ nextPutAll:'->'; |
|
1624 |
"/ nextPutAll:(encoder nameOfEncoding) |
|
1625 |
encoder printOn:aStream |
|
1626 |
! ! |
|
1627 |
||
| 7932 | 1628 |
!CharacterEncoder::DefaultEncoder class methodsFor:'documentation'! |
1629 |
||
1630 |
documentation |
|
1631 |
" |
|
| 7972 | 1632 |
That is only a dummy for ST80 compatibility |
| 7932 | 1633 |
" |
1634 |
! ! |
|
1635 |
||
| 7915 | 1636 |
!CharacterEncoder::InverseEncoder class methodsFor:'documentation'! |
| 7914 | 1637 |
|
1638 |
documentation |
|
1639 |
" |
|
1640 |
An inverseEncoder does the inverse - i.e. encode is really a decode |
|
1641 |
and decode is really an encode. |
|
1642 |
" |
|
1643 |
! ! |
|
1644 |
||
| 7915 | 1645 |
!CharacterEncoder::InverseEncoder methodsFor:'accessing'! |
| 7914 | 1646 |
|
1647 |
decoder:something |
|
1648 |
decoder := something. |
|
1649 |
! ! |
|
1650 |
||
| 7915 | 1651 |
!CharacterEncoder::InverseEncoder methodsFor:'encoding & decoding'! |
| 7914 | 1652 |
|
1653 |
decode:aCode |
|
1654 |
^ decoder encode:aCode |
|
1655 |
! |
|
1656 |
||
1657 |
decodeString:aString |
|
1658 |
^ decoder encodeString:aString |
|
1659 |
! |
|
1660 |
||
1661 |
encode:aCode |
|
1662 |
^ decoder decode:aCode |
|
1663 |
! |
|
1664 |
||
1665 |
encodeString:aString |
|
1666 |
^ decoder decodeString:aString |
|
1667 |
! ! |
|
1668 |
||
| 7972 | 1669 |
!CharacterEncoder::InverseEncoder methodsFor:'printing'! |
1670 |
||
1671 |
printOn:aStream |
|
1672 |
aStream |
|
| 14209 | 1673 |
nextPutAll:(decoder nameOfEncoding); |
1674 |
nextPutAll:'->'; |
|
1675 |
nextPutAll:(decoder nameOfDecodedCode) |
|
| 7972 | 1676 |
! ! |
1677 |
||
|
12435
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1678 |
!CharacterEncoder::InverseEncoder methodsFor:'queries'! |
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1679 |
|
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1680 |
characterSize:charOrcodePoint |
| 21138 | 1681 |
"return the number of bytes required to encode codePoint" |
1682 |
||
|
12435
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1683 |
^ decoder characterSize:charOrcodePoint |
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1684 |
! ! |
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1685 |
|
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1686 |
!CharacterEncoder::InverseEncoder methodsFor:'stream support'! |
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1687 |
|
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1688 |
readNextInputCharacterFrom:aStream |
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1689 |
^ decoder readNextInputCharacterFrom:aStream |
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1690 |
! ! |
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1691 |
|
| 7915 | 1692 |
!CharacterEncoder::NullEncoder class methodsFor:'documentation'! |
| 7914 | 1693 |
|
1694 |
documentation |
|
1695 |
" |
|
1696 |
A NullEncoder does nothing. |
|
1697 |
" |
|
1698 |
! ! |
|
1699 |
||
| 7915 | 1700 |
!CharacterEncoder::NullEncoder methodsFor:'encoding & decoding'! |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1701 |
|
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1702 |
decode:aCode |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1703 |
^ aCode |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1704 |
! |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1705 |
|
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1706 |
decodeString:aString |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1707 |
^ aString |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1708 |
! |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1709 |
|
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1710 |
encode:aCode |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1711 |
^ aCode |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1712 |
! |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1713 |
|
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1714 |
encodeString:aString |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1715 |
^ aString |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1716 |
! ! |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1717 |
|
| 7917 | 1718 |
!CharacterEncoder::NullEncoder methodsFor:'queries'! |
1719 |
||
1720 |
isNullEncoder |
|
1721 |
^ true |
|
1722 |
! ! |
|
1723 |
||
| 7915 | 1724 |
!CharacterEncoder::OtherEncoding class methodsFor:'private'! |
| 7892 | 1725 |
|
1726 |
flushCode |
|
1727 |
! |
|
1728 |
||
1729 |
generateEncoderCode |
|
1730 |
! ! |
|
1731 |
||
| 7919 | 1732 |
!CharacterEncoder::TwoStepEncoder class methodsFor:'documentation'! |
1733 |
||
1734 |
documentation |
|
1735 |
" |
|
1736 |
A twoStepEncoder uses two real encoders; |
|
1737 |
to encode: |
|
| 14209 | 1738 |
string -> encoder1(encode) -> encoder2(encode) -> result |
| 7919 | 1739 |
to decode: |
| 14209 | 1740 |
string -> encoder2(decode) -> encoder1(decode) -> result |
| 7919 | 1741 |
" |
1742 |
! ! |
|
1743 |
||
1744 |
!CharacterEncoder::TwoStepEncoder methodsFor:'accessing'! |
|
1745 |
||
1746 |
encoder1:encoder1Arg encoder2:encoder2Arg |
|
1747 |
"set instance variables (automatically generated)" |
|
1748 |
||
1749 |
encoder1 := encoder1Arg. |
|
1750 |
encoder2 := encoder2Arg. |
|
1751 |
! ! |
|
1752 |
||
1753 |
!CharacterEncoder::TwoStepEncoder methodsFor:'encoding & decoding'! |
|
1754 |
||
1755 |
decode:aCode |
|
1756 |
^ encoder1 decode:(encoder2 decode:aCode) |
|
1757 |
! |
|
1758 |
||
1759 |
decodeString:aString |
|
1760 |
^ encoder1 decodeString:(encoder2 decodeString:aString) |
|
1761 |
! |
|
1762 |
||
1763 |
encode:aCode |
|
1764 |
^ encoder2 encode:(encoder1 encode:aCode) |
|
1765 |
! |
|
1766 |
||
1767 |
encodeString:aString |
|
1768 |
^ encoder2 encodeString:(encoder1 encodeString:aString) |
|
1769 |
! ! |
|
1770 |
||
| 7972 | 1771 |
!CharacterEncoder::TwoStepEncoder methodsFor:'printing'! |
1772 |
||
1773 |
printOn:aStream |
|
1774 |
aStream |
|
| 14209 | 1775 |
nextPutAll:(encoder1 nameOfDecodedCode); |
1776 |
nextPutAll:'->'; |
|
1777 |
nextPutAll:(encoder1 nameOfEncoding); |
|
1778 |
nextPutAll:'->'; |
|
1779 |
nextPutAll:(encoder2 nameOfEncoding) |
|
| 7972 | 1780 |
! ! |
1781 |
||
| 11300 | 1782 |
!CharacterEncoder::TwoStepEncoder methodsFor:'queries'! |
1783 |
||
|
14523
91746a24d5ad
characterSize: query was missing
Claus Gittinger <cg@exept.de>
parents:
14209
diff
changeset
|
1784 |
characterSize:codePoint |
| 21138 | 1785 |
"return the number of bytes required to encode codePoint" |
1786 |
||
|
14523
91746a24d5ad
characterSize: query was missing
Claus Gittinger <cg@exept.de>
parents:
14209
diff
changeset
|
1787 |
"/ 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
|
1788 |
^ (encoder2 characterSize:codePoint) |
|
91746a24d5ad
characterSize: query was missing
Claus Gittinger <cg@exept.de>
parents:
14209
diff
changeset
|
1789 |
|
|
91746a24d5ad
characterSize: query was missing
Claus Gittinger <cg@exept.de>
parents:
14209
diff
changeset
|
1790 |
"Created: / 22-11-2012 / 13:07:47 / cg" |
|
91746a24d5ad
characterSize: query was missing
Claus Gittinger <cg@exept.de>
parents:
14209
diff
changeset
|
1791 |
! |
|
91746a24d5ad
characterSize: query was missing
Claus Gittinger <cg@exept.de>
parents:
14209
diff
changeset
|
1792 |
|
| 11300 | 1793 |
nameOfEncoding |
1794 |
^ "encoder1 nameOfEncoding , '-' ," encoder2 nameOfEncoding |
|
1795 |
||
1796 |
||
1797 |
||
1798 |
||
1799 |
||
1800 |
||
1801 |
||
1802 |
||
1803 |
||
1804 |
||
1805 |
||
1806 |
||
1807 |
||
1808 |
||
1809 |
||
1810 |
||
1811 |
! ! |
|
1812 |
||
| 7892 | 1813 |
!CharacterEncoder class methodsFor:'documentation'! |
1814 |
||
1815 |
version |
|
| 18624 | 1816 |
^ '$Header$' |
|
12435
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1817 |
! |
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1818 |
|
|
539c24148e90
added: #readNextInputCharacterFrom:
Claus Gittinger <cg@exept.de>
parents:
11975
diff
changeset
|
1819 |
version_CVS |
| 18624 | 1820 |
^ '$Header$' |
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1821 |
! ! |
|
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1822 |
|
|
14777
a669080229da
add user friendly name to semaphores
Stefan Vogel <sv@exept.de>
parents:
14559
diff
changeset
|
1823 |
|
|
7899
7577df77ba95
character encodings - first attempt
Claus Gittinger <cg@exept.de>
parents:
7893
diff
changeset
|
1824 |
CharacterEncoder initialize! |