automate editing of a template Post: 302667065

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Top Forums Shell Programming and Scripting automate editing of a template Post 302667065 by Corona688 on Thursday 5th of July 2012 02:27:29 PM

07-05-2012

Registered User

It's fairly simple once you know what the special variables are. FILENAME is a special variable meaning the current file being read by awk. FNR is a special variable meaning 'line number', relative to the current file. (NR would be the total number of lines from all files processed so far.) $0 is the current line.

arr is just an array with strings being put in it for each line. Once the second file gets read, it substitutes strings from that array into the lines being read, then prints them back out.

Code:

awk '
# For each line, test whether the current FILENAME is file1.
# When it is, store arr[line number]=line.
# Then skip to the next line.
FILENAME=="file1" {arr[FNR]=$0; next}

# For each line, test whether the current FILENAME is file2.
# When it is, substitute arr[line number] for @tag@, then print.
FILENAME=="file2" {sub("@tag@", arr[FNR], $0);  print}' file1 file2 > file3

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swiss::stars

SWISS::Stars(3pm)					User Contributed Perl Documentation					 SWISS::Stars(3pm)

NAME

       SWISS::Stars.pm

DESCRIPTION

       SWISS::Stars represents the ** lines within an SWISS-PROT + TrEMBL entry. These are the lines with the line tag ** which are normally not
       publicly visible.

       SWISS::Stars is a master object like SWISS::Entry. It contains subobjects which represent the different line types in the ** section. Each
       line type has a two letter tag in addition to the ** line tag. This module has been written to allow easy addition of new ** line types. To
       use a new ** line tag, just use the tag as an object dereference. Example:

	$entry->Stars->XX->add("New XX tag line.","Second new XX tag line.");

       If there is no class SWISS::Stars::XX, the class of the new object will be SWISS::Stars::default, which handles lines with the
       corresponding tag as an array of lines. If more specific handling is required, a new class SWISS::Stars::XX can be created following the
       template of SWISS::Stars::default. An example is SWISS::Stars::aa.

       Subclass names and new line tags have to be two-letter-tags. No checks are made wheter the dereferenced tag is allowed.

       Access to the (old) unstructured ANNOTATOR'S SECTION is provided by the line tag 'aa'.

	$entry->Stars->aa->add("Testline 1.","Second new test line.");

       will add these two lines to the ANNOTATOR'S SECTION.

Inherits from
       SWISS::BaseClass.pm

Attributes
	   No public attributes apart from the subclasses.

Methods
   Standard methods
       new
       fromText
       toText
       update

perl v5.10.1							    2006-01-26							 SWISS::Stars(3pm)