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Full Discussion: [Awk] Extract block of with a particular pattern
Top Forums Shell Programming and Scripting [Awk] Extract block of with a particular pattern Post 302496629 by sandeepk1611 on Monday 14th of February 2011 04:58:41 PM
Old 02-14-2011
[Awk] Extract block of with a particular pattern
Hi,

I have some CVS log files, which are divided into blocks. Each block has many fields of information and I want to extract those blocks with a pattern. Here is the sample input.

Code:
RCS file: /cvsroot/eclipse/org.eclipse.debug.core/core/org/eclipse/debug/core/DebugPlugin.java,v
head: 1.174
branch:
locks: strict
access list:
keyword substitution: o
total revisions: 181;    selected revisions: 16
description:
----------------------------
revision 1.149
date: 2007-04-16 11:06:45 -0500;  author: darin;  state: Exp;  lines: +51 -132;  commitid: 611546239f144567;
Bug 178902 Setting Stop in main does not stop when launched
----------------------------
revision 1.148
date: 2007-03-26 20:47:29 -0500;  author: darin;  state: Exp;  lines: +1 -1;  commitid: 61604608779a4567;
update copyrights
----------------------------
revision 1.147
date: 2007-01-18 10:57:34 -0600;  author: darin;  state: Exp;  lines: +5 -0;  commitid: 458f45afa6fd4567;
tracing for debug events
----------------------------
revision 1.146
date: 2007-01-17 09:01:45 -0600;  author: darin;  state: Exp;  lines: +7 -0;  commitid: 614345ae3a564567;
javadoc settings and fixes
=============================================================================
RCS file: /cvsroot/eclipse/org.eclipse.debug.core/core/org/eclipse/debug/core/DebugException.java,v
head: 1.17
branch:
locks: strict
access list:
keyword substitution: o
total revisions: 18;    selected revisions: 2
description:
----------------------------
revision 1.14
date: 2006-06-12 15:42:24 -0500;  author: darin;  state: Exp;  lines: +2 -2;
copyright updates
----------------------------
revision 1.13
date: 2006-05-16 09:34:00 -0500;  author: darin;  state: Exp;  lines: +1 -1;
javadoc spelling errors
=============================================================================

After the word "description", there is information for each revision. I only want those revisions where the last field (which is free text) has the patterns "Bug" , or "Fix" or "####" some number without any preceding letters or words. The last field may be in a single line or in 2 lines.

The above input has the data for 2 files. For each file, I want to retain the information till the word "description", but after that I want the information only for those revisions which have these patterns in them.

The expected output is

Code:
RCS file: /cvsroot/eclipse/org.eclipse.debug.core/core/org/eclipse/debug/core/DebugPlugin.java,v
head: 1.174
branch:
locks: strict
access list:
keyword substitution: o
total revisions: 181;    selected revisions: 16
description:
----------------------------
revision 1.149
date: 2007-04-16 11:06:45 -0500;  author: darin;  state: Exp;  lines: +51 -132;  commitid: 611546239f144567;
Bug 178902 Setting Stop in main does not stop when launched
=============================================================================
RCS file: /cvsroot/eclipse/org.eclipse.debug.core/core/org/eclipse/debug/core/DebugException.java,v
head: 1.17
branch:
locks: strict
access list:
keyword substitution: o
total revisions: 18;    selected revisions: 2
description:
=============================================================================

Sorry for the long question. I would appreciate any help.

Thank you very much.

Sandeep
Last edited by sandeepk1611; 02-14-2011 at 06:00 PM.. Reason: wrong output
 

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