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Full Discussion: replace string in file.1 with line from file.2
Top Forums Shell Programming and Scripting replace string in file.1 with line from file.2 Post 302315138 by ccox85 on Monday 11th of May 2009 03:56:27 PM
Old 05-11-2009
replace string in file.1 with line from file.2
Hello all, the title makes this sound simple, and maybe it should be.

This is by code:
Code:
#!/bin/sh
cp ch25.txt ch25.fn.tex
n=`grep -c '^\[' ch25_footnotes.txt`

for i in {1..$n}
do
        `grep '^\[$i\]' ch25_footnotes.txt > temp`
        r=`awk -F] '{print $2}' temp`
        `sed 's/\[$i\]/\\footnote{$r}/' ch25.fn.tex`
done

This is what I am trying to do. I have a file like this:
Quote:
First there was nothing. Then there was Calvin[1].
That contains a body of text with footnotes markers, that are of exactly that format [i]. Square brackets are not used otherwise in the text... at least no patters of the form [integer] exist except for footnote markers.

I have a another file of the footnote text, like this
Quote:
[1] A memorable quote from Bill Waterson's Calvin and Hobbes.
What that code I wrote is attempting to do is:
  1. Create a copy of the body text to mess with.
  2. Count the number of footnotes that exist.
  3. Initiate a For loop that will generate an $i for every integer up to $n, the number of footnotes.
  4. grep the line starting with [$i] and save stick it into a temp file.
  5. use awk to grab only the text portion of the footnote (skipping the [$i] number at the beginning of the line) and store that in variable r.
  6. Finally, search the main file for the [$i] marker and add the footnote, alone with \footnote{} markup for latex.
  7. Repeat hundreds of times (-;

I am not all that great with scripting, but this is my thought process and what I have tried. Right now... nothing happens. I execute the script, and it just hangs, and I have to break the script.

In case you are wondering, I am just trying to typeset Marx's Das Kapital for posterity and easier reading. I do not plan on printing or distributing... just taking a freely available reading material and making it pretty.

Thank you!
Last edited by ccox85; 05-11-2009 at 05:28 PM..
 

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LEARN ABOUT DEBIAN

html::formattext::withlinks

HTML::FormatText::WithLinks(3pm)			User Contributed Perl Documentation			  HTML::FormatText::WithLinks(3pm)

NAME

       HTML::FormatText::WithLinks - HTML to text conversion with links as footnotes

SYNOPSIS

	   use HTML::FormatText::WithLinks;

	   my $f = HTML::FormatText::WithLinks->new();

	   my $html = qq(
	   <html>
	   <body>
	   <p>
	       Some html with a <a href="http://example.com/">link</a>
	   </p>
	   </body>
	   </html>
	   );

	   my $text = $f->parse($html);

	   print $text;

	   # results in something like

	   Some html with a [1]link

	   1. http://example.com/

	   my $f2 = HTML::FormatText::WithLinks->new(
	       before_link => '',
	       after_link => ' [%l]',
	       footnote => ''
	   );

	   $text = $f2->parse($html);
	   print $text;

	   # results in something like

	   Some html with a link [http://example.com/]

	   my $f3 = HTML::FormatText::WithLinks->new(
	       link_num_generator => sub {
		   return "*" x (shift() + 1);
	       },
	       footnote => '[%n] %l'
	   );

	   $text = $f3->parse($html);
	   print $text;

	   # results in something like

	   Some html with a [*]link

	   [*] http://example.com/

DESCRIPTION

       HTML::FormatText::WithLinks takes HTML and turns it into plain text but prints all the links in the HTML as footnotes. By default, it
       attempts to mimic the format of the lynx text based web browser's --dump option.

METHODS

   new
	   my $f = HTML::FormatText::WithLinks->new( %options );

       Returns a new instance. It accepts all the options of HTML::FormatText plus

       base
	   a base option. This should be set to a URI which will be used to turn any relative URIs on the HTML to absolute ones.

       doc_overrides_base
	   If a base element is found in the document and it has an href attribute then setting doc_overrides_base to true will cause the
	   document's base to be used. This defaults to false.

       before_link (default: '[%n]')
       after_link (default: '')
       footnote (default: '[%n] %l')
	   a string to print before a link (i.e. when the <a> is found), after link has ended (i.e. when then </a> is found) and when printing out
	   footnotes.

	   "%n" will be replaced by the link number, "%l" will be replaced by the link itself.

	   If footnote is set to '', no footnotes will be printed.

       link_num_generator (default: sub { return shift() + 1 })
	   link_num_generator is a sub that returns the value to be printed for a given link number. The internal store starts numbering at 0.

       with_emphasis
	   If set to 1 then italicised text will be surrounded by "/" and bolded text by "_".  You can change these markers by using the
	   "italic_marker" and "bold_marker" options.

       unique_links
	   If set to 1 then will only generate 1 footnote per unique URI as oppose to the default behaviour which is to generate a footnote per
	   URI.

       anchor_links
	   If set to 0 then links pointing to local anchors will be skipped.  The default behaviour is to include all links.

       skip_linked_urls
	   If set to 1, then links where the text equals the href value will be skipped.  The default behaviour is to include all links.

   parse
	   my $text = $f->parse($html);

       Takes some HTML and returns it as text. Returns undef on error.

       Will also return undef if you don't pass it undef. Returns an empty string if passed an empty string.

   parse_file
	   my $text = $f->parse_file($filename);

       Takes a filename and returns the contents of the file as plain text.  Returns undef on error.

   error
	   $f->error();

       Returns the last error that occured. In practice this is likely to be either a warning that parse_file couldn't find the file or that
       HTML::TreeBuilder failed.

CAVEATS

       When passing HTML fragments the results may be a little unpredictable.  I've tried to work round the most egregious of the issues but any
       unexpected results are welcome.

       Also note that if for some reason there is an a tag in the document that does not have an href attribute then it will be quietly ignored.
       If this is really a problem for anyone then let me know and I'll see if I can think of a sensible thing to do in this case.

AUTHOR

       Struan Donald. <struan@cpan.org>

       <http://www.exo.org.uk/code/>

       Ian Malpass <ian@indecorous.com> was responsible for the custom formatting bits and the nudge to release the code.

       Simon Dassow <janus@errornet.de<gt> for the anchor_links option plus a few bugfixes and optimisations

       Kevin Ryde for the code for pulling the base out the document.

       Thomas Sibley <trs@bestpractical.com> patches for skipping links that are their urls and to change the delimiters for bold and italic
       text..

COPYRIGHT

       Copyright (C) 2003-2010 Struan Donald and Ian Malpass. All rights reserved.

LICENSE

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

SEE ALSO

       perl(1), HTML::Formatter.

perl v5.10.1							    2010-12-20					  HTML::FormatText::WithLinks(3pm)
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