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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Example recipes</title><meta name="generator" content="DocBook XSL Stylesheets V1.68.1"><link rel="start" href="index.html" title="The ELinks Manual"><link rel="up" href="ch14.html" title="Chapter 14. Scripting ELinks with Lua"><link rel="prev" href="ch14s03.html" title="Using ELinks with Lua"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Example recipes</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch14s03.html">Prev</a> </td><th width="60%" align="center">Chapter 14. Scripting ELinks with Lua</th><td width="20%" align="right"> </td></tr></table><hr></div><div class="section" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2522664"></a>Example recipes</h2></div></div></div><p>This chapter contains some example scripts that you can use. All of them come
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Example recipes</title><meta name="generator" content="DocBook XSL Stylesheets V1.68.1"><link rel="start" href="index.html" title="The ELinks Manual"><link rel="up" href="ch14.html" title="Chapter 14. Scripting ELinks with Lua"><link rel="prev" href="ch14s03.html" title="Using ELinks with Lua"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Example recipes</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch14s03.html">Prev</a> </td><th width="60%" align="center">Chapter 14. Scripting ELinks with Lua</th><td width="20%" align="right"> </td></tr></table><hr></div><div class="section" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2523202"></a>Example recipes</h2></div></div></div><p>This chapter contains some example scripts that you can use. All of them come
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from <code class="literal">contrib/lua/hooks.lua</code>. I really recommend you to see it directly
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instead of copying code out of this document. Also, not everything in there is
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covered here.</p><p>If you would like to contribute scripts, that would be great! Please send
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them to me at <a href="mailto:tjaden@@users.sourceforge.net" target="_top">tjaden@@users.sourceforge.net</a>. Cliff and I plan to
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them to me at <a href="mailto:tjaden@users.sourceforge.net" target="_top">tjaden@users.sourceforge.net</a>. Cliff and I plan to
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start a script repository, provided we get some contributions. As for script
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ideas, you'll just have to be a little creative :-)</p><p>Also take a look at the <code class="literal">contrib/lua/</code> directory in the ELinks distribution.
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Note that Peter and Cliff don't maintain the Lua support intensively anymore,
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thus it would be probably nice to Cc me (<a href="mailto:pasky@@ucw.cz" target="_top">pasky@@ucw.cz</a>) if you want
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thus it would be probably nice to Cc me (<a href="mailto:pasky@ucw.cz" target="_top">pasky@ucw.cz</a>) if you want
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to contribute some patch, so that I would be able to add it to the ELinks
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distribution.</p><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2522726"></a>Go to URL on steroids</h3></div></div></div><p>There are some web sites that I visit often. Bookmarks are okay, but they are
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distribution.</p><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2523264"></a>Go to URL on steroids</h3></div></div></div><p>There are some web sites that I visit often. Bookmarks are okay, but they are
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separate from the "Go to URL" dialog box, so I keep forgetting to use them.
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Also, when I visit a search engine home page, all I really want to do is enter
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a search term.</p><p>The following script allows me to type certain strings into the "Go to URL"
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end</pre><p>(Note that this was noticably enhanced and rewritten in the ELinks standart
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hooks.)</p></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2522802"></a>Expanding ~ (tilde)</h3></div></div></div><p>By adding an extra snippet of code to the previous example, we can make ELinks
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hooks.)</p></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2523340"></a>Expanding ~ (tilde)</h3></div></div></div><p>By adding an extra snippet of code to the previous example, we can make ELinks
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expand pathnames such as <code class="literal">~/foo/bar</code>
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and <code class="literal">~user/zappo</code>, like in the shell
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and other Unix programs.</p><pre class="screen">-- Home directory: If you do not enable system functions, you will need
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.</pre></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2522853"></a>Filtering crap</h3></div></div></div><p>Many web pages nowadays have columns to the left and right of the text, which
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.</pre></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2523391"></a>Filtering crap</h3></div></div></div><p>Many web pages nowadays have columns to the left and right of the text, which
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are utterly useless. If you happen to be viewing the page in a 80x25 screen,
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the text you want to read ends up crammed into a tiny space in the centre. We
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use ELinks Lua support to manipulate the HTML before it reaches the parser.</p><div class="section" lang="en"><div class="titlepage"><div><div><h4 class="title"><a name="id2522868"></a>linuxtoday.com</h4></div></div></div><p>Note: This recipe is out of date.</p><p>Linux Today has two problems when viewed in ELinks: the useless columns on the
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use ELinks Lua support to manipulate the HTML before it reaches the parser.</p><div class="section" lang="en"><div class="titlepage"><div><div><h4 class="title"><a name="id2523406"></a>linuxtoday.com</h4></div></div></div><p>Note: This recipe is out of date.</p><p>Linux Today has two problems when viewed in ELinks: the useless columns on the
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left and the right and all the text appears in cyan. Here is a quick recipe
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to fix that:</p><pre class="screen">-- Plain strfind (no metacharacters)
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function sstrfind (s, pattern)
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end</pre></div><div class="section" lang="en"><div class="titlepage"><div><div><h4 class="title"><a name="id2522922"></a>linuxgames.com</h4></div></div></div><p>Here is a simpler example, for <a href="http://www.linuxgames.com/" target="_top">http://www.linuxgames.com/</a>.</p><pre class="screen">function pre_format_html_hook (url, html)
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end</pre></div><div class="section" lang="en"><div class="titlepage"><div><div><h4 class="title"><a name="id2523461"></a>linuxgames.com</h4></div></div></div><p>Here is a simpler example, for <a href="http://www.linuxgames.com/" target="_top">http://www.linuxgames.com/</a>.</p><pre class="screen">function pre_format_html_hook (url, html)
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return gsub (html, "<CENTER>.-</center>", "", 1)
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.</pre></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2522953"></a>Reading gzipped files</h3></div></div></div><p>Note: ELinks already supports gzipped files natively.</p><p>Sometimes documents come gzipped in order to save space, but then you need to
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.</pre></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2523492"></a>Reading gzipped files</h3></div></div></div><p>Note: ELinks already supports gzipped files natively.</p><p>Sometimes documents come gzipped in order to save space, but then you need to
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uncompress them to read them with ELinks. Here is a recipe to handle gzipped
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files on a Unix system.</p><pre class="screen">-- This script requires system functions.
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.</pre></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2522995"></a>Printing</h3></div></div></div><p>Printing a web page with ELinks usually involves quite a few steps: Save the
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.</pre></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2523534"></a>Printing</h3></div></div></div><p>Printing a web page with ELinks usually involves quite a few steps: Save the
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current document onto disk. Run it through ELinks on the command-line (so it
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fits into 80 columns) to generate a plain text version. Remove the 80th
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column from the text version, as it will make printers wrap down to the next
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-- Send the current document to `enscript'.
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function enscript ()
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catto ("|enscript -fCourier8")
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end</pre></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2523074"></a>Deferring to Netscape</h3></div></div></div><p>If you come across a brain-dead web page that is totally unreadable with
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end</pre></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2523612"></a>Deferring to Netscape</h3></div></div></div><p>If you come across a brain-dead web page that is totally unreadable with
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ELinks, you'd probably want to open it with a graphical browser. The
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following function opens the current document in Netscape.</p><pre class="screen">-- This function requires `execute', a system function.
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local new = netscape_new_window and ",new_window" or ""
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execute ("( netscape -remote 'openURL("..current_url ()..new..")'"
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.." || netscape '"..current_url ().."' ) 2>/dev/null &")
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end</pre></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2523107"></a>Alternative bookmark system</h3></div></div></div><p>Many people would like to have a bookmark system with categories (note that
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end</pre></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2523645"></a>Alternative bookmark system</h3></div></div></div><p>Many people would like to have a bookmark system with categories (note that
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ELinks already supports that, marketing name Hiearchical bookmarks), and also
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to be able to view them and search for them in an HTML page. I have written
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an alternative bookmark system (for ELinks), which some people may like better
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than the standard bookmark system.</p></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2523130"></a>More ideas</h3></div></div></div><div class="itemizedlist"><ul type="disc"><li>
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than the standard bookmark system.</p></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2523666"></a>More ideas</h3></div></div></div><div class="itemizedlist"><ul type="disc"><li>
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The Lua interface needs to be redesigned to provide more flexible, coherent
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and usable interface to the scripts.
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