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Old 04-20-2009, 03:03 AM   #1
naveentiptur
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Registered: Apr 2009
Posts: 3

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Exclamation getline bug c++


Hi ,


istream->getline drops one character when it goes to read from one buffer to another buffer...

The code i am using is as below

char lineRead[1024];
istream * is = request->Instream();
is->getline(lineRead,1000,'\r');


request->Instream is an async buffer which reads 1024 bytes everytime..

Ex:

if the buffer is

first line.. 1024
second line ... abcdefgh
third line

if the 1000 bytes ends in the middle of the second line for example at 'c', then the next char 'd' gets droppped and it starts to read from 'e'
..


if I read the whole buffer using readsome() then it comes fine.. get() also gives same problem..


Can someone help me with this.. or any other method to read the buffer line by line..
 
Old 04-20-2009, 05:39 AM   #2
Tinkster
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Distribution: slackware by choice, others too :} ... android.
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Hi,

and welcome to LQ!

Works as designed ...

http://www.cplusplus.com/reference/i...tream/getline/
n-1 is *normal* behaviour.


Cheers,
Tink
 
Old 04-20-2009, 11:33 PM   #3
naveentiptur
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Registered: Apr 2009
Posts: 3

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Unhappy Hi, But it drops a character in the middle of the line.

Hi,
But it drops a character in the middle of the line and not at the end ,
which presumably u must be thinking..

infact it drops whereever it is, when it goes from one chunk of bytes to another ..
did u get it??

Thanks,
Naveen
 
Old 04-20-2009, 11:35 PM   #4
naveentiptur
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Registered: Apr 2009
Posts: 3

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Wink One more thing,

There is no problem with the buffer.. Because it works fine with readsome()..



Thanks,
Naveen
 
  


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