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Full Discussion: Sed/awk/perl substitution with multiple lines
Top Forums Shell Programming and Scripting Sed/awk/perl substitution with multiple lines Post 302928198 by sudo on Tuesday 9th of December 2014 06:47:48 PM
Old 12-09-2014
Sed/awk/perl substitution with multiple lines
OSX
I have been grinding my teeth on a portion of code. I am building a bash script that edits a html email template. In the template, I have place holders for SED (or whatever program is appropriate) to use as anchors for find and replace, with user defined corresponding html code. The HTML code is pulled from a text file which contains all the different options of code. A simulation is:
(simplified)
Code:
The template with placeholders:

headerPlaceholder
productPlaceholder
infoPlaceholder
datePlaceholder

Code:
product=$(awk '/PRODSTART/,/PRODEND/{if (!/PRODSTART/&&!/PRODEND/) print}' snippets.txt)    # range of desired html code selected from file, setup as a variable
sed -i '' "s/productPlaceholder/$product\n/g" ~/Desktop/emailTemplate.eml    #replaces the placeholder with specified html code

If it was a single line, this works fine. But, the html snippet is usually multiple lines, filled with special characters such as:
Code:
<p><font color=3D"#929292">Product =
Code:&nbsp;</font><span class=3D"Apple-tab-span" style=3D"color: rgb(51, =
51, 51); white-space: pre; ">		</span><font =
color=3D"#333333">prodnum</font><br><font color=3D"#929292">Model =

Is there a better way to approach this? Thanks!
 

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LEARN ABOUT DEBIAN

uri::template

URI::Template(3pm)					User Contributed Perl Documentation					URI::Template(3pm)

NAME

       URI::Template - Object for handling URI templates (RFC 6570)

SYNOPSIS

	   use URI::Template;
	   my $template = URI::Template->new( 'http://example.com/{x}' );
	   my $uri	= $template->process( x => 'y' );
	   # uri is a URI object with value 'http://example.com/y'

DESCRIPTION

       This module provides a wrapper around URI templates as described in RFC 6570: http://tools.ietf.org/html/rfc6570

INSTALLATION

	   perl Makefile.PL
	   make
	   make test
	   make install

METHODS

   new( $template )
       Creates a new URI::Template instance with the template passed in as the first parameter.

   template
       This method returns the original template string.

   variables
       Returns an array of unique variable names found in the template. NB: they are returned in random order.

   expansions
       This method returns an list of expansions found in the template.  Currently, these are just coderefs.  In the future, they will be more
       interesting.

   process( \%vars )
       Given a list of key-value pairs or an array ref of values (for positional substitution), it will URI escape the values and substitute them
       in to the template. Returns a URI object.

   process_to_string( \%vars )
       Processes input like the "process" method, but doesn't inflate the result to a URI object.

AUTHORS

       o   Brian Cassidy <bricas@cpan.org>

       o   Ricardo SIGNES <rjbs@cpan.org>

COPYRIGHT AND LICENSE

       Copyright 2007-2012 by Brian Cassidy

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							    2012-05-30							URI::Template(3pm)
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