259 lines
14 KiB
HTML
259 lines
14 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="topic" />
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<meta name="DC.Title" content="Regular expression notation for HTTP Server" />
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<meta name="abstract" content="This topic provides a general overview of regular expression notation." />
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<meta name="description" content="This topic provides a general overview of regular expression notation." />
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<meta name="DC.Relation" scheme="URI" content="rzaieprogramming.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2002,2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2002,2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Regular expression notation for HTTP Server</title>
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</head>
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<body id="rzaieregexpnot"><a name="rzaieregexpnot"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Regular expression notation for HTTP Server</h1>
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<div><p>This topic provides a general overview of regular expression notation.</p>
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<div class="important"><span class="importanttitle">Important:</span> Information
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for this topic supports the latest PTF levels for HTTP Server for i5/OS .
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It is recommended that you install the latest PTFs to upgrade to the latest
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level of the HTTP Server for i5/OS. Some of the topics documented here are
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not available prior to this update. See <a href="http://www-03.ibm.com/servers/eserver/iseries/software/http/services/service.html" target="_blank">http://www.ibm.com/servers/eserver/iseries/software/http/services/service.htm</a> <img src="www.gif" alt="Link outside Information Center" /> for more information. </div>
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<p>A regular expression notation specifies a pattern of character strings.
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One or more regular expressions can be used to create a matching pattern.
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Certain characters (sometimes called wildcards) have special meanings. The
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table below describes the pattern matching scheme. </p>
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<p><strong>Regular expression pattern matching </strong> </p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th valign="top" width="21.21212121212121%" id="d0e34">Pattern</th>
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<th valign="top" width="78.78787878787878%" id="d0e36">Description</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>string </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p> string with no special characters matches the values
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that contain the string. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>[set] </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Match a single character specified by the set of
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single characters within the square brackets. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>[a-z] </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Match a character in the range specified within the
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square brackets. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>[^abc] </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Match any single character not specified in the set
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of single characters within the square brackets. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>{n} </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Match exactly n times. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>{n,} </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Match at least n times. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>{n,m} </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Match at least n times, but no more than m times. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>^ </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Match the start of the string. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>$</tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Match the end of the string. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>. </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Match any character (except Newline). </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>* </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Match zero or more of preceding character. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>+ </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Match one or more of preceding character. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>? </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Match one or zero of preceding character. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>string1|string2</tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Match string1 or string2. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\ </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Signifies an escape character. When preceding any
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of the characters that have special meaning, the escape character removes
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any special meaning from the character. For example, the backslash is useful
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to remove special meaning from a period in an IP address. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>(group) </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Group a character in a regular expression. If a match
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is found the first group can be accessed using $1. The second group can be
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accessed using $2 and so on. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\w </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Match an alphanumeric character. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\s </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Match a white-space character. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\t </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Tab character. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\n</tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Newline character. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\r </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Return character. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\f </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Form feed character. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\v </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Vertical tab character.</p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\a </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Bell character. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\e </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Escape character. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\Onn </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Octal character, for example \O76. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\xnn </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Hex character, for example \xff. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\cn </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Control character, for example \c[. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\l </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Lowercase next character. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\L </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Lowercase until \E. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\u </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Uppercase next character. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\U </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Uppercase until \E.</p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\E </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>End modification. </p>
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</td>
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</tr>
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<tr><td valign="top" width="21.21212121212121%" headers="d0e34 "><tt>\Q </tt></td>
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<td valign="top" width="78.78787878787878%" headers="d0e36 "><p>Quote until \E. </p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p><strong>Examples of regular expression pattern matching </strong></p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th valign="top" width="21.31979695431472%" id="d0e286">Pattern</th>
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<th valign="top" width="78.68020304568529%" id="d0e288">Examples of strings that match</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" width="21.31979695431472%" headers="d0e286 "><tt>ibm </tt></td>
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<td valign="top" width="78.68020304568529%" headers="d0e288 "><tt>ibm01, myibm, aibmbc</tt></td>
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</tr>
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<tr><td valign="top" width="21.31979695431472%" headers="d0e286 "><tt>^ibm$ </tt></td>
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<td valign="top" width="78.68020304568529%" headers="d0e288 "><tt>ibm </tt></td>
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</tr>
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<tr><td valign="top" width="21.31979695431472%" headers="d0e286 "><tt>^ibm0[0-4][0-9]$ </tt></td>
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<td valign="top" width="78.68020304568529%" headers="d0e288 "><tt>ibm000 through ibm049 </tt></td>
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</tr>
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<tr><td valign="top" width="21.31979695431472%" headers="d0e286 "><tt>ibm[3-8] </tt></td>
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<td valign="top" width="78.68020304568529%" headers="d0e288 "><tt>ibm3, myibm4, aibm5b </tt></td>
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</tr>
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<tr><td valign="top" width="21.31979695431472%" headers="d0e286 "><tt>^ibm </tt></td>
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<td valign="top" width="78.68020304568529%" headers="d0e288 "><tt>ibm01, ibm </tt></td>
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</tr>
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<tr><td valign="top" width="21.31979695431472%" headers="d0e286 "><tt>ibm$ </tt></td>
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<td valign="top" width="78.68020304568529%" headers="d0e288 "><tt>myibm, ibm, 3ibm </tt></td>
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</tr>
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<tr><td valign="top" width="21.31979695431472%" headers="d0e286 "><tt>ibm... </tt></td>
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<td valign="top" width="78.68020304568529%" headers="d0e288 "><tt>ibm123, myibmabc, aibm09bcd </tt></td>
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</tr>
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<tr><td valign="top" width="21.31979695431472%" headers="d0e286 "><tt>ibm*1</tt></td>
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<td valign="top" width="78.68020304568529%" headers="d0e288 "><tt>ibm1, myibm1, aibm1abc, ibmkkkkk12 </tt></td>
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</tr>
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<tr><td valign="top" width="21.31979695431472%" headers="d0e286 "><tt>^ibm0.. </tt></td>
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<td valign="top" width="78.68020304568529%" headers="d0e288 "><tt>ibm001, ibm099, ibm0abcd </tt></td>
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</tr>
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<tr><td valign="top" width="21.31979695431472%" headers="d0e286 "><tt>^ibm0..$ </tt></td>
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<td valign="top" width="78.68020304568529%" headers="d0e288 "><tt>ibm001, ibm099 </tt></td>
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</tr>
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<tr><td valign="top" width="21.31979695431472%" headers="d0e286 "><tt>10.2.1.9 </tt></td>
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<td valign="top" width="78.68020304568529%" headers="d0e288 "><tt>10.2.1.9, 10.2.139.6, 10.231.98.6 </tt></td>
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</tr>
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<tr><td valign="top" width="21.31979695431472%" headers="d0e286 "><tt>^10\.2\.1\.9$ </tt></td>
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<td valign="top" width="78.68020304568529%" headers="d0e288 "><tt>10.2.1.9 </tt></td>
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||
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</tr>
|
||
|
|
<tr><td valign="top" width="21.31979695431472%" headers="d0e286 "><tt>^10\.2\.1\.1[0-5]$</tt></td>
|
||
|
|
<td valign="top" width="78.68020304568529%" headers="d0e288 "><tt>10.2.1.10, 10.2.1.11, 10.2.1.12, 10.2.1.13, 10.2.1.14,
|
||
|
|
10.2.1.15</tt></td>
|
||
|
|
</tr>
|
||
|
|
<tr><td valign="top" width="21.31979695431472%" headers="d0e286 "><tt>^192.\.168\..*\..*$</tt></td>
|
||
|
|
<td valign="top" width="78.68020304568529%" headers="d0e288 "><p>(All addresses on class B subnet 192.168.0.0) </p>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
<tr><td valign="top" width="21.31979695431472%" headers="d0e286 "><tt>^192.\.168\.10\..*$</tt></td>
|
||
|
|
<td valign="top" width="78.68020304568529%" headers="d0e288 "><p>(All addresses on class C subnet 192.168.10.0) </p>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
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</tbody>
|
||
|
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</table>
|
||
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</div>
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||
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</div>
|
||
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<div>
|
||
|
|
<div class="familylinks">
|
||
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaieprogramming.htm" title="This topic provides information on CGI, directives, APIs, and other programming topics.">Programming</a></div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
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</body>
|
||
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</html>
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