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Re: File position and buffers

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From Cee Joe <cyril_jose@ymail.com>
Newsgroups comp.lang.ruby
Subject Re: File position and buffers
Date Thu, 28 Apr 2011 09:06:53 -0500
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Thanks guys for your helpful comments. I will be more descriptive. I am 
an intern and my mentor wants me to use the IO.pos to read the 
characters of the file until the character reaches the ">" symbol. SO 
upon the cursor reaching the ">" symbol(which is the start of a new 
entry), he wants me to place that previous entry in a buffer. Here is 
the actual test file I am working with:

>gi|329295464|ref|NM_2005745.3Acc1| Def1 zgc:65895 (zgc:65895), mRNA\n
AGCTCGGGGGCTCTAGCGATTTAAGGAGCGATGCGATCGAGCTGACCGTCGCG\n
\n
>gi|456299107|ref|NM_2342343.3Acc2| Def2 zgc:65895 (zgc:65895), mRNA\n
GTCGCTGGGTCGAAAAGTGGTGCTATATCGCGGCTCGCGTCGATGTCGCGATG\n
CGTGCGCGCGAGAGCGCGCTATGATGAAAGGATGAGAGAG\n
\n
>gi|3542945647|ref|NM_7453343.5Acc3| Def3 zgc:65895 (zgc:65895), mRNA\n
CGTGCGGGGABCCGTACGTGCCGTGGGGGTTTAATAGCGCGCCATCTGAGCAG\n
TTAGTCGCTGACGCATGCACG\n
\n

7stud, you are right there are two consecutive newlines which I failed 
to mention. This should be the output of a buffer for one entry:

>gi|456299107|ref|NM_2342343.3Acc2| Def2 zgc:65895 (zgc:65895), mRNA\n
GTCGCTGGGTCGAAAAGTGGTGCTATATCGCGGCTCGCGTCGATGTCGCGATG <-- no "\n"
CGTGCGCGCGAGAGCGCGCTATGATGAAAGGATGAGAGAG <-- no "\n"


Notice how the newlines are gone. So with the exception of the header in 
each entry, the newlines should be gone and be placed in a buffer. I am 
lost on how to use the IO.pos and a file iterator to make sure each 
respective entry goes into a buffer without the file being indexed into 
memory.

Thanks in advance, I'm new to the language and trying to wrap my head 
around it.

-- 
Posted via http://www.ruby-forum.com/.

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Thread

File position and buffers Cee Joe <cyril_jose@ymail.com> - 2011-04-27 15:02 -0500
  Re: File position and buffers Jesús Gabriel y Galán <jgabrielygalan@gmail.com> - 2011-04-27 16:47 -0500
  Re: File position and buffers jake kaiden <jakekaiden@yahoo.com> - 2011-04-27 17:33 -0500
  Re: File position and buffers 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-27 19:08 -0500
  Re: File position and buffers 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-27 19:50 -0500
  Re: File position and buffers Robert Klemme <shortcutter@googlemail.com> - 2011-04-28 02:54 -0500
    Re: File position and buffers 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-28 13:06 -0500
      Re: File position and buffers 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-28 13:25 -0500
        Re: File position and buffers Cee Joe <cyril_jose@ymail.com> - 2011-04-28 13:29 -0500
  Re: File position and buffers Cee Joe <cyril_jose@ymail.com> - 2011-04-28 09:06 -0500
  Re: File position and buffers 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-28 12:47 -0500
    Re: File position and buffers Cee Joe <cyril_jose@ymail.com> - 2011-04-28 13:27 -0500
      Re: File position and buffers 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-28 18:31 -0500
        Re: File position and buffers Cee Joe <cyril_jose@ymail.com> - 2011-04-28 20:05 -0500
  Re: File position and buffers 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-28 21:58 -0500
    Re: File position and buffers Cee Joe <cyril_jose@ymail.com> - 2011-04-29 10:20 -0500
  Re: File position and buffers jake kaiden <jakekaiden@yahoo.com> - 2011-04-28 22:36 -0500
  Re: File position and buffers 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-29 12:50 -0500
    Re: File position and buffers Cee Joe <cyril_jose@ymail.com> - 2011-04-29 13:32 -0500
      Re: File position and buffers 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-29 17:45 -0500
  Re: File position and buffers jake kaiden <jakekaiden@yahoo.com> - 2011-04-29 15:38 -0500
  Re: File position and buffers Cee Joe <cyril_jose@ymail.com> - 2011-04-29 16:10 -0500

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