| author | Claus Gittinger <cg@exept.de> |
| Thu, 02 Mar 2000 15:15:13 +0100 | |
| changeset 885 | c31412b26306 |
| parent 478 | 778953b40429 |
| child 1239 | fcb74307748c |
| permissions | -rw-r--r-- |
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c31412b26306
package-definitions fixed/updated
Claus Gittinger <cg@exept.de>
parents:
478
diff
changeset
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"{ Package: 'stx:goodies' }"
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c31412b26306
package-definitions fixed/updated
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parents:
478
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" |
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COPYRIGHT (c) 1996 by eXept Software AG |
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All Rights Reserved |
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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FilteringStream subclass:#LineNumberReadStream |
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instanceVariableNames:'lineNumber' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'Streams-Misc' |
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! |
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!LineNumberReadStream class methodsFor:'documentation'! |
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copyright |
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" |
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COPYRIGHT (c) 1996 by eXept Software AG |
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885
c31412b26306
package-definitions fixed/updated
Claus Gittinger <cg@exept.de>
parents:
478
diff
changeset
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All Rights Reserved |
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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! |
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documentation |
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" |
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This filter keeps track of the current line, while |
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passing text from its inputStream to its outputStream. |
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Can be placed in-between text processing and the texts |
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input stream, and let it keep track of the lineNumber. |
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[see also:] |
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ReadStream WriteStream ExternalStream FileStream |
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FilteringStream FilteringLineStream |
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[author:] |
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c31412b26306
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parents:
478
diff
changeset
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Claus Gittinger |
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! |
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examples |
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" |
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count lines in a Makefile: |
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[exBegin] |
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|in filter| |
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in := 'Makefile' asFilename readStream. |
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filter := LineNumberReadStream readingFrom:in. |
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filter upToEnd. |
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filter close. |
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Transcript showCR:('Makefile has %1 lines' bindWith:(filter lineNumber - 1)).
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[exEnd] |
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find a specific string and output its lineNr: |
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parents:
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diff
changeset
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[exBegin] |
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|in filter| |
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in := 'Makefile' asFilename readStream. |
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filter := LineNumberReadStream readingFrom:in. |
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filter skipThroughAll:'start of'. |
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filter close. |
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Transcript showCR:('found in line %1' bindWith:(filter lineNumber)).
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parents:
478
diff
changeset
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[exEnd] |
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" |
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! ! |
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!LineNumberReadStream methodsFor:'accessing'! |
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lineNumber |
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"return the current lineNumber" |
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^ lineNumber |
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"Created: 11.1.1997 / 16:57:10 / cg" |
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"Modified: 11.1.1997 / 16:57:19 / cg" |
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! |
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lineNumber:something |
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"set the current lineNumber" |
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lineNumber := something. |
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"Created: 11.1.1997 / 16:57:10 / cg" |
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"Modified: 11.1.1997 / 16:57:22 / cg" |
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! ! |
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!LineNumberReadStream methodsFor:'initialization'! |
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initialize |
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super initialize. |
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lineNumber := 1. |
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filter := [:char | |
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c31412b26306
package-definitions fixed/updated
Claus Gittinger <cg@exept.de>
parents:
478
diff
changeset
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char == Character cr ifTrue:[ |
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c31412b26306
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parents:
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diff
changeset
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lineNumber := lineNumber + 1. |
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c31412b26306
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]. |
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char |
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c31412b26306
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]. |
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"Modified: 11.1.1997 / 16:58:42 / cg" |
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! ! |
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!LineNumberReadStream class methodsFor:'documentation'! |
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version |
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^ '$Header: /cvs/stx/stx/libbasic2/LineNumberReadStream.st,v 1.2 2000-03-02 14:14:53 cg Exp $' |
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! ! |