Keith Hodges escreveu:
Hello Casmiro,
great to see you using Rio. The latest version has moved away from using "Rio" in the code and is now (for better or worse) using classes called File/Directory.
Rio doesnt use exceptions very much at all for various reasons. It is relatively easy to test for existence, and there are other utilities provided.
In your case where you want a basic stream,
"returns nil if the file does not exist" aStream := 'aGivenFileName' asFile reader.
"returns nil if the file does not exist" data = 'aGivenFileName' asFile contents.
"The reading block is ignored if the file does not exist" 'aGivenFileName' asFile reader: [ :str | aChar := str next ].
"an explicit checks for existence are available via" 'aGivenFileName' asFile ifFileDo: [ :f | f contents ]. 'aGivenFileName' asFile ifExistsDo: [ :f | f contents ]. 'aGivenFileName' asFile ifAbsentDo: [ :f | f touch ].
The latest Rio is available from Universes, be prepared to replace senders of asRio with asFile/asDirectory
thanks for the feedback, knowing the above wold you rather have exceptions still?
best regards
Keith
Hello Keith,
Working in a Fedora rel 10 intel box I've had the following problem:
aStream := self myFileName asFile reader. ... [ aStream atEof ] whileFalse: [ aLine := aStream nextLine. ... ]
If the file is a text file created in Linux, then it will read only one line. If the file is a CrLf text file (Microsoft) it will read the total number of lines plus 1. Besides, many of the reads will be twisted (with the Cr char as part of the string).
When I do:
aStream := CrLfFileStream fileNamed: self myFileName.
Things work properly with:
aLine := aStream nextLine.
if I have a dos text file (crlf)
Obviously: aLine := nextString also fails.
How to fix the behaviour of nextLine for common Linux text files ???
Best regards,
Casimiro