Hello there. I was trying to read a bitmap file using hGetChar but I had a problem: if the file contains the byte 26-decimal (or 1A-hexa) the program aborts. Here you have the output: Fail: end of file Action: hGetChar Since hGetChar is implemented with getc, I created a similar program in C, using getc. This program written in C had no problems. Is this a haskell bug or does anyone know what's going on? Thanks, Andre Furtado
Andre W B Furtado wrote: [ EOF at Ctrl-Z problem ]
Sounds like you're using WinDoze which interprets Ctrl-Z as EOF in non-binary files IIRC (great idea, BTW! :-}. Alas, you have to use non-standard features (openFileEx or hSetBinaryMode) to get around this, see: http://www.haskell.org/ghc/docs/latest/set/sec-ioexts.html#AEN8657 Cheers, Sven
Are you on a Windows platform of some kind (I guess so, from your mail headers)? I vaguely remember having a problem like this (in Python, IIRC) because MSDOS used ^Z (ASCII 26) as an end of file marker. So low-level Win32 file access routines still interpret this character as end-of-file. I got round the problem at the time by using binary i/o. I don't know whether this is possible in Haskell. Andrew On Mon, Feb 12, 2001 at 05:09:18PM -0300, Andre W B Furtado wrote:
Hello there. I was trying to read a bitmap file using hGetChar but I had a problem: if the file contains the byte 26-decimal (or 1A-hexa) the program aborts. Here you have the output:
Fail: end of file Action: hGetChar
Since hGetChar is implemented with getc, I created a similar program in C, using getc. This program written in C had no problems. Is this a haskell bug or does anyone know what's going on?
Thanks, Andre Furtado
participants (3)
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Andre W B Furtado -
andrew＠andrewcooke.free-online.co.uk -
Sven Panne