WebSVN – oidinfo_new_design – Blame – /trunk/regexp.htm

Rev	Author	Line No.	Line
2	daniel-mar	1	<!DOCTYPE html>
		2	<html lang="en">
		3	<head>
		4	<title>OID repository - Search - Regexp</title>
		5	<meta charset="UTF-8"><!-- <meta content="text/html; charset=iso-8859-1" http-equiv="content-type"> -->
		6	<meta name="google-translate-customization" content="ae799a386ca63905-075d0f84d2caa8b0-g8dbf29cdfe9cdbeb-c">
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		8	<meta name="viewport" content="width=device-width, initial-scale=1">
		9	<meta name="DESCRIPTION" content="This OID repository gathers information about Object Identifiers (OIDs), and provides tools to display and search for this information.">
		10	<meta name="keywords" content="object identifier oid OID repository registration authority ISO ITU">
38	daniel-mar	11	<link rel="icon" type="/image/png" href="images/favicon.png">
2	daniel-mar	12	<script src="scripts.js"></script>
		13	</head>
		14	<body id="body" onload="_onload()">
		15	<div id="global_container">
		16	<div id="header">
		17	<a href="index.htm">
		18	<img src="images/treewall.jpg" width="130" height="110">
		19	</a>
6	daniel-mar	20	<h1 id="header_h1">OID Repository</h1><br><br><br><br>
2	daniel-mar	21	<div id="header_url_and_menu">
6	daniel-mar	22	<div id="header_url">www.oid-info.com</div>
2	daniel-mar	23	<div id="header_url_right">
		24	<ul id="header_menu">
		25	<li><a href="index.htm">Home</a></li>
		26	<li><a href="/cgi-bin/display?tree=">Tree display</a></li>
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		28	<li><a href="faq.htm">FAQ</a></li>
		29	<li><a href="/helper">Helper</a></li>
		30	</ul>
		31	</div>
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		33	<div style="top: 11px; left: 694px; margin-left:-120px;" id="search">
		34	<span style="color: rgb(226, 137, 34); font-family: Arial, Helvetica, sans-serif; font-size: 14px; font-weight: bold;">Display OID:</span> <br>
		35	<form name="form_go" method="get" action="/cgi-bin/display" enctype="multipart/form-data">
		36	<input type="hidden" name="action" value="display">
		37	<input name="oid" size="20" value="" onfocus="empty();" placeholder="-- OID --" type="text"> <input value="Go" type="submit">
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		39	</div>
		40	<div id="google_translate">
		41	<script>
		42	function googleTranslateElementInit() {
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		51	<div id="mobile_version">
		52	<aside class="sidebar">
		53	<nav id="navigation" role="navigation">
		54	<form name="form_go" method="get" action="/cgi-bin/display" enctype="multipart/form-data">
		55	<a><input name="oid" id="searchbox_mobile" size="35" value="" onfocus="empty();" placeholder="-- Display OID --" type="search"></a>
		56	</form>
		57	<a href="index.htm">Home</a>
		58	<a href="/cgi-bin/display?tree=">Tree display</a>
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		61	<a href="/helper">Chatbot helper</a>
		62	</nav>
		63	</aside>
		64	</div>
		65	<div class="wrapper">
		66	<table width="100%" id="header_mobile">
		67	<tr>
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		69	<a href="#body" class="nav-button-open" aria-label="open navigation"></a>
		70	<a href="#" class="nav-button-close" aria-label="close navigation"></a>
		71	</td>
		72	<td width="60%" valign="middle">
6	daniel-mar	73	<h1 id="header_h1">OID Repository</h1>
		74	<div id="header_url">www.oid-info.com</div>
2	daniel-mar	75	</td>
		76	<td width="20%"><a href="index.htm"><img src="images/treewall.jpg" style="height:10vh;width:auto"></a></td>
		77	</tr>
		78	</table>
		79
		80	<div id="global_content">
		81	<div id="reg_in_regexp">
		82
		83	<table cellspacing="0" cellpadding="0" border="0" width="100%">
		84	<tr>
		85	<td height="6%" valign="top" width="100%">
		86	<span class="page_title">
		87	Regular expressions
		88	</span>
		89	</td>
		90	</tr>
		91	</table><br><a name="introduction"></a>
		92	<table cellspacing="0" cellpadding="0" border="0" width="100%">
		93	<tr>
		94	<td height="8%" valign="middle" width="100%"><span class="section_title">Introduction</span></td>
		95	</tr>
		96	</table>
		97	<table cellspacing="0" cellpadding="0" border="0" width="100%">
		98	<tr>
		99	<td valign="top" width="100%">
		100
		101	<p>
		102	A regular expression is a character sequence that is an abbreviated
13	daniel-mar	103	definition of a set of strings. A string matches a regular
2	daniel-mar	104	expression if it is a member of the set described by the regular expression.
		105	</p>
		106	<p>
		107	A regular expression is allowed to match anywhere within a string,
13	daniel-mar	108	unless the regular expression is explicitly anchored to the beginning (operator <code>^</code>)
		109	or end (operator <code>$</code>) of the string.
2	daniel-mar	110	</p>
		111
		112	</td>
		113
		114
		115
		116	<td width="3%" valign="top"> </td>
		117
		118
		119
		120	<td width="20%"> </td>
		121
		122
		123
		124	</tr>
		125
		126
		127
		128	</table>
		129
		130	<a name="syntax"></a>
		131	<table cellspacing="0" cellpadding="0" border="0" width="100%">
		132
		133
		134
		135	<tr>
		136
		137
		138
		139
		140
		141
		142	<td height="8%" valign="middle" width="100%"><span class="section_title">Syntax</span></td>
		143
		144
		145
		146
		147
		148	</tr>
		149
		150
		151
		152	</table>
		153
		154
		155
		156	<table cellspacing="0" cellpadding="0" border="0" width="100%">
		157
		158
		159
		160	<tr>
		161
		162
		163
		164
		165
		166
		167	<td valign="top" width="100%">
		168	<p>The following character sequences are recognized:</p>
		169	<ul>
		170	<li>
		171	<code class="code">.</code> matches any single character except
		172	newline
		173	</li>
		174	<li>
		175	<code class="code">*</code> (postfix) matches the previous expression
		176	zero, one or several times
		177	</li>
		178	<li>
		179	<code class="code">+</code> (postfix) matches the previous expression
		180	one or several times
		181	<ul>
		182	<li><code>[+]</code> matches a "+" character (escape mechanism)</li>
		183	</ul>
		184	</li>
		185	<li>
		186	<code class="code">?</code> (postfix) matches the previous expression
		187	once or not at all
		188	</li>
		189	<li>
		190	<code class="code">[  ]</code> is a character set
		191	<ul>
		192	<li>
		193	ranges are denoted with a hyphen "<code class="code">-</code>",
		194	as in <code class="code">[a-z]</code>
		195	</li>
		196	<li>
		197	an initial caret "<code class="code">^</code>", as in <code class="code">[^0-9]</code>,
		198	complements the set (i.e., any character, except a lowercase letter from a to z, is accepted)
		199	</li>
		200	<li><code>[[]</code> matches a "[" character (escape mechanism)</li>
		201	<li><code>[]]</code> matches a "]" character (escape mechanism)</li>
		202	</ul>
		203	</li>
		204	<li><code class="code">^</code> matches at beginning of line</li>
		205	<li><code class="code">$</code> matches at end of line</li>
		206	<li><code class="code">\|</code> (infix) alternative between two expressions</li>
		207	<li>
		208	<code class="code">(  )</code> grouping of the enclosed expression
		209	<ul>
		210	<li><code>[(]</code> matches a "(" character (escape mechanism)</li>
		211	<li><code>[)]</code> matches a ")" character (escape mechanism)</li>
		212	</ul>
		213	</li>
		214	<li>
		215	<code class="code">\</code> escapes special characters (<em>i.e.</em>,
		216	<code>^.[$\|*?{'</code>):
		217	<ul>
		218	<li><code>\n</code> matches a newline character</li>
		219	<li><code>\.</code> matches a dot "." character</li>
		220	<li><code>\'</code> matches a quote "<code>'</code>" character</li>
		221	<li>
		222	<code class="code">\</code> cannot be escaped; to search for
		223	a backslash, use <code class="code">.</code> to match any single
		224	character
		225	</li>
		226	</ul>
		227	</li>
		228	</ul>
		229	</td>
		230	<td width="2%" valign="top"> </td>
		231	<td width="20%">  </td>
		232	</tr>
		233	</table>
		234
		235	</div>
		236	<div class="clear"></div>
		237	</div>
		238
		239
		240	<center id="footer">
		241	<img style="border: 0px solid ; width: 760px; height: 2px;" alt="separation line" src="images/separation800.png" width="760" height="2"><br><br>
		242	<table width="710" cellspacing="0" cellpadding="0" border="0">
		243	<tr valign="baseline">
		244	<td width="34">
		245	<a href="/helper">
		246	<img src="images/enveloppe.png" width="30" height="13" name="mail" border="0" alt="OID helper">
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		248	</td>
		249	<td width="58" align="center"><font size="-2">Webmaster</font></td>
		250	<td width="10" align="center"><img src="images/pointorange_small.gif" width="14" height="10"></td>
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		252	<font size="-2">
33	daniel-mar	253	<script language="JavaScript">
2	daniel-mar	254	d=new Date(document.lastModified)
		255	month=new Array("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec")
		256	if (Date.parse(document.lastModified) != 0)
		257	document.write(d.getDate()+" "+month[d.getMonth()]+" "+d.getFullYear());
33	daniel-mar	258	</script>
2	daniel-mar	259	</font>
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		263	<font size=-1>
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		267	<td height="20" width="162" valign="middle" align="right"><a href="#top"><img src="images/page_top.png" width="150" height="17" border="0"></a></td>
		268	</tr>
		269	</table><br>
		270	</center>
		271	</div>
		272	</body>
		273	</html>

Subversion Repositories oidinfo_new_design

oidinfo_new_design/trunk/regexp.htm – Rev 38