145 lines
7.8 KiB
HTML
145 lines
7.8 KiB
HTML
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<!-- BeginDsi "dsi/head.html" -->
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>Embedthis Appweb 4.3.4 Documentation</title>
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<meta name="keywords" content="embedded web server, web server software, embedded HTTP, application web server,
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embedded server, small web server, HTTP server, library web server, library HTTP, HTTP library" />
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<meta name="description" content="Embedthis Sofware provides commercial and open source embedded web servers for
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devices and applications." />
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<meta name="robots" content="index,follow" />
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<link href="../../../doc.css" rel="stylesheet" type="text/css" />
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<link href="../../../print.css" rel="stylesheet" type="text/css" media="print"/>
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<!--[if IE]>
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<link href="../../../iehacks.css" rel="stylesheet" type="text/css" />
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<![endif]-->
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<link href="http://www.google.com/cse/style/look/default.css" type="text/css" rel="stylesheet" />
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</head>
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<body>
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<div class="top">
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<a class="logo" href="http://appwebserver.org/"> </a>
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<div class="topRight">
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<div class="search">
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<div id="cse-search-form"></div>
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<div class="version">Embedthis Appweb 4.3.4</div>
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</div>
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</div>
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<div class="crumbs">
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<a href="../../../index.html">Home</a>
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<!-- EndDsi -->
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> <a href="index.html">Programming Guide</a> > <b>Serving Pages from ROM</b>
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</div>
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</div>
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<div class="content">
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<div class="contentRight">
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<h1>Quick Nav</h1>
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<ul>
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<li><a href="#compilingWebPages">Compiling Web Pages</a></li>
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<li><a href="#php">Using ROM with PHP</a></li>
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</ul>
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<!-- BeginDsi "dsi/progGuideSeeAlso.html" -->
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<h1>See Also</h1>
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<ul class="nav">
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<li><a href="../../../guide/appweb/programmers/index.html">Programmers Guide</a></li>
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<li><a href="../../../guide/appweb/programmers/embedding.html">Embedding Appweb</a></li>
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<li><a href="../../../guide/appweb/programmers/modules.html">Custom Modules</a></li>
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<li><a href="../../../guide/appweb/programmers/handlers.html">Custom Handlers</a></li>
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<li><a href="../../../guide/appweb/programmers/stages.html">Pipeline Stages</a></li>
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<li><a href="../../../guide/appweb/programmers/migrating.html">Migrating to Appweb 4</a></li>
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<li><a href="../../../guide/appweb/programmers/rom.html">ROM Content</a></li>
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<li><a href="../../../guide/appweb/programmers/man.html">Manual Pages</a></li>
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<li><a href="../../../ref/appweb/index.html">Programmers Reference</a></li>
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<li><a href="../../../ref/appweb/architecture.html">Appweb Architecture</a></li>
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<li><a href="../../../api/native.html">Native APIs</a></li>
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<li><a href="../../../guide/appweb/users/index.html">Users Guide</a></li>
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</ul>
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<!-- EndDsi -->
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</div>
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<div class="contentLeft">
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<h1>Serving Pages from ROM</h1>
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<p>To enable Appweb to be used on an embedded system without a file system, Appweb supports the compilation of
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web pages and configuration files into C code that can be stored in Read Only Memory (ROM) and fetched by
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Appweb to respond to relevant requests.</p>
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<p>Appweb has a virtual file system interface that allows the run-time switching between serving web pages
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on a disk-based file system and a compiled ROM based store of web pages.</p>
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<p>This ROM facility may also be used to enhance security by preventing the modification of web documents,
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or in performance critical situations were the serving of web pages from memory may be an effective
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optimization.</p><a id="compilingWebPages"></a>
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<h2 class="section">Compiling Web Pages</h2>
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<p>The Appweb <b>makerom</b> program is used to compile web documents, configuration files, and any other
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files that you would like to be compiled into C code. The makerom program will parse the files and convert
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them into C data structures which can then be compiled by your C/C++ compiler and linked into your
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application.</p>
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<p>For example:</p>
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<pre>
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makerom `find web -print` >romFiles.c
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</pre>
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<p>This will create a list of all the web files and then convert these files into C structures in the file
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romFiles.c.</p>
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<p>The <b>makerom</b> program takes two options:</p>
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<table title="Switches" class="width">
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<thead>
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<tr>
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<th>Switch</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>--prefix</td>
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<td>Specifies a leading string prefix to remove from each of the compiled file names. Filenames
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should be relative paths and not start with "./".
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</td>
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</tr>
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<tr>
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<td class="nowrap">-- name</td>
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<td>Specifies the name of top level C structure. Appweb allows multiple ROM directories to be
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included in a single application. This is necessary if using virtual hosts to allow each host
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to have its own web directory.</td>
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</tr>
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</tbody>
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</table>
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<p>It is important to include some essential Appweb configuration files into the ROM. These include the
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Appweb configuration file, the mime.types file, and any authorization database files. The following script
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is used to compile the web pages in three web directories ("sslWeb", "vhostWeb", and "web") and to also
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compile the essential configuration files.</p>
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<a id="php"></a>
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<h2 class="section">Using ROM with PHP</h2>
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<p>The ROM facility is supported by the following Appweb modules and handlers: fileHandler,
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espHandler and the sslModule.</p>
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<p>Ejscript and PHP do not support the Appweb ROM facility.</p>
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</div>
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</div>
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<!-- BeginDsi "dsi/bottom.html" -->
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<div class="bottom">
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<p class="footnote">
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<a href="../../../product/copyright.html" >© Embedthis Software LLC, 2003-2013.
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All rights reserved. Embedthis, Appweb, ESP, Ejscript and Embedthis GoAhead are trademarks of Embedthis Software LLC.</a>
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</p>
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</div>
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<script src="http://www.google.com/jsapi" type="text/javascript"></script>
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<script type="text/javascript">
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google.load('search', '1', {language : 'en'});
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google.setOnLoadCallback(function() {
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var customSearchControl = new google.search.CustomSearchControl(
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'000262706376373952077:1hs0lhenihk');
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customSearchControl.setResultSetSize(google.search.Search.FILTERED_CSE_RESULTSET);
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var options = new google.search.DrawOptions();
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options.enableSearchboxOnly("http://appwebserver.org/search.html");
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customSearchControl.draw('cse-search-form', options);
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}, true);
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</script>
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<script type="text/javascript">
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var _gaq = _gaq || [];
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_gaq.push(['_setAccount', 'UA-179169-2']);
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_gaq.push(['_trackPageview']);
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var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
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ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
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var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
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</body>
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</html>
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