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<html>
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<head>
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||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
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<title>POSIX Basic Regular Expression Syntax</title>
|
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<link rel="stylesheet" href="../../../../../../doc/html/boostbook.css" type="text/css">
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<meta name="generator" content="DocBook XSL Stylesheets Vsnapshot_2006-12-17_0120">
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<link rel="start" href="../../index.html" title="Boost.Regex">
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<link rel="up" href="../syntax.html" title="Regular Expression Syntax">
|
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<link rel="prev" href="basic_extended.html" title="POSIX Extended Regular Expression Syntax">
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<link rel="next" href="character_classes.html" title="Character Class Names">
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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<table cellpadding="2" width="100%">
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<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../boost.png"></td>
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<td align="center"><a href="../../../../../../index.htm">Home</a></td>
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<td align="center"><a href="../../../../../../libs/libraries.htm">Libraries</a></td>
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<td align="center"><a href="../../../../../../people/people.htm">People</a></td>
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<td align="center"><a href="../../../../../../more/faq.htm">FAQ</a></td>
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<td align="center"><a href="../../../../../../more/index.htm">More</a></td>
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</table>
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<hr>
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<div class="spirit-nav">
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<a accesskey="p" href="basic_extended.html"><img src="../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../syntax.html"><img src="../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="character_classes.html"><img src="../../../../../../doc/html/images/next.png" alt="Next"></a>
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</div>
|
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<div class="section" lang="en">
|
||||
<div class="titlepage"><div><div><h3 class="title">
|
||||
<a name="boost_regex.syntax.basic_syntax"></a><a href="basic_syntax.html" title="POSIX Basic Regular Expression Syntax"> POSIX Basic Regular
|
||||
Expression Syntax</a></h3></div></div></div>
|
||||
<a name="boost_regex.syntax.basic_syntax.synopsis"></a><h4>
|
||||
<a name="id518494"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.synopsis">Synopsis</a>
|
||||
</h4>
|
||||
<p>
|
||||
The POSIX-Basic regular expression syntax is used by the Unix utility <code class="computeroutput"><span class="identifier">sed</span></code>, and variations are used by <code class="computeroutput"><span class="identifier">grep</span></code> and <code class="computeroutput"><span class="identifier">emacs</span></code>.
|
||||
You can construct POSIX basic regular expressions in Boost.Regex by passing
|
||||
the flag <code class="computeroutput"><span class="identifier">basic</span></code> to the regex
|
||||
constructor (see <a href="../ref/syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a>), for example:
|
||||
</p>
|
||||
<pre class="programlisting">
|
||||
<span class="comment">// e1 is a case sensitive POSIX-Basic expression:
|
||||
</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex</span> <span class="identifier">e1</span><span class="special">(</span><span class="identifier">my_expression</span><span class="special">,</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex</span><span class="special">::</span><span class="identifier">basic</span><span class="special">);</span>
|
||||
<span class="comment">// e2 a case insensitive POSIX-Basic expression:
|
||||
</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex</span> <span class="identifier">e2</span><span class="special">(</span><span class="identifier">my_expression</span><span class="special">,</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex</span><span class="special">::</span><span class="identifier">basic</span><span class="special">|</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex</span><span class="special">::</span><span class="identifier">icase</span><span class="special">);</span>
|
||||
</pre>
|
||||
<a name="boost_regex.posix_basic"></a><p>
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.posix_basic_syntax"></a><h4>
|
||||
<a name="id518788"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.posix_basic_syntax">POSIX
|
||||
Basic Syntax</a>
|
||||
</h4>
|
||||
<p>
|
||||
In POSIX-Basic regular expressions, all characters are match themselves except
|
||||
for the following special characters:
|
||||
</p>
|
||||
<pre class="programlisting">.[\*^$</pre>
|
||||
<a name="boost_regex.syntax.basic_syntax.wildcard_"></a><h5>
|
||||
<a name="id518829"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.wildcard_">Wildcard:</a>
|
||||
</h5>
|
||||
<p>
|
||||
The single character '.' when used outside of a character set will match
|
||||
any single character except:
|
||||
</p>
|
||||
<div class="itemizedlist"><ul type="disc">
|
||||
<li>
|
||||
The NULL character when the flag <code class="computeroutput"><span class="identifier">match_no_dot_null</span></code>
|
||||
is passed to the matching algorithms.
|
||||
</li>
|
||||
<li>
|
||||
The newline character when the flag <code class="computeroutput"><span class="identifier">match_not_dot_newline</span></code>
|
||||
is passed to the matching algorithms.
|
||||
</li>
|
||||
</ul></div>
|
||||
<a name="boost_regex.syntax.basic_syntax.anchors_"></a><h5>
|
||||
<a name="id518899"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.anchors_">Anchors:</a>
|
||||
</h5>
|
||||
<p>
|
||||
A '^' character shall match the start of a line when used as the first character
|
||||
of an expression, or the first character of a sub-expression.
|
||||
</p>
|
||||
<p>
|
||||
A '$' character shall match the end of a line when used as the last character
|
||||
of an expression, or the last character of a sub-expression.
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.marked_sub_expressions_"></a><h5>
|
||||
<a name="id518937"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.marked_sub_expressions_">Marked
|
||||
sub-expressions:</a>
|
||||
</h5>
|
||||
<p>
|
||||
A section beginning <code class="computeroutput"><span class="special">\(</span></code> and ending
|
||||
<code class="computeroutput"><span class="special">\)</span></code> acts as a marked sub-expression.
|
||||
Whatever matched the sub-expression is split out in a separate field by the
|
||||
matching algorithms. Marked sub-expressions can also repeated, or referred-to
|
||||
by a back-reference.
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.repeats_"></a><h5>
|
||||
<a name="id518996"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.repeats_">Repeats:</a>
|
||||
</h5>
|
||||
<p>
|
||||
Any atom (a single character, a marked sub-expression, or a character class)
|
||||
can be repeated with the * operator.
|
||||
</p>
|
||||
<p>
|
||||
For example <code class="computeroutput"><span class="identifier">a</span><span class="special">*</span></code>
|
||||
will match any number of letter a's repeated zero or more times (an atom
|
||||
repeated zero times matches an empty string), so the expression <code class="computeroutput"><span class="identifier">a</span><span class="special">*</span><span class="identifier">b</span></code>
|
||||
will match any of the following:
|
||||
</p>
|
||||
<pre class="programlisting">b
|
||||
ab
|
||||
aaaaaaaab
|
||||
</pre>
|
||||
<p>
|
||||
An atom can also be repeated with a bounded repeat:
|
||||
</p>
|
||||
<p>
|
||||
<code class="computeroutput"><span class="identifier">a</span><span class="special">\{</span><span class="identifier">n</span><span class="special">\}</span></code> Matches
|
||||
'a' repeated exactly n times.
|
||||
</p>
|
||||
<p>
|
||||
<code class="computeroutput"><span class="identifier">a</span><span class="special">\{</span><span class="identifier">n</span><span class="special">,\}</span></code> Matches
|
||||
'a' repeated n or more times.
|
||||
</p>
|
||||
<p>
|
||||
<code class="computeroutput"><span class="identifier">a</span><span class="special">\{</span><span class="identifier">n</span><span class="special">,</span> <span class="identifier">m</span><span class="special">\}</span></code> Matches 'a' repeated between n and m times
|
||||
inclusive.
|
||||
</p>
|
||||
<p>
|
||||
For example:
|
||||
</p>
|
||||
<pre class="programlisting">^a{2,3}$</pre>
|
||||
<p>
|
||||
Will match either of:
|
||||
</p>
|
||||
<pre class="programlisting">aa
|
||||
aaa
|
||||
</pre>
|
||||
<p>
|
||||
But neither of:
|
||||
</p>
|
||||
<pre class="programlisting">a
|
||||
aaaa
|
||||
</pre>
|
||||
<p>
|
||||
It is an error to use a repeat operator, if the preceding construct can not
|
||||
be repeated, for example:
|
||||
</p>
|
||||
<pre class="programlisting">a(*)</pre>
|
||||
<p>
|
||||
Will raise an error, as there is nothing for the * operator to be applied
|
||||
to.
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.back_references_"></a><h5>
|
||||
<a name="id519242"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.back_references_">Back references:</a>
|
||||
</h5>
|
||||
<p>
|
||||
An escape character followed by a digit <span class="emphasis"><em>n</em></span>, where <span class="emphasis"><em>n</em></span>
|
||||
is in the range 1-9, matches the same string that was matched by sub-expression
|
||||
<span class="emphasis"><em>n</em></span>. For example the expression:
|
||||
</p>
|
||||
<pre class="programlisting">^\(a*\).*\1$</pre>
|
||||
<p>
|
||||
Will match the string:
|
||||
</p>
|
||||
<pre class="programlisting">aaabbaaa</pre>
|
||||
<p>
|
||||
But not the string:
|
||||
</p>
|
||||
<pre class="programlisting">aaabba</pre>
|
||||
<a name="boost_regex.syntax.basic_syntax.character_sets_"></a><h5>
|
||||
<a name="id519318"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.character_sets_">Character
|
||||
sets:</a>
|
||||
</h5>
|
||||
<p>
|
||||
A character set is a bracket-expression starting with [ and ending with ],
|
||||
it defines a set of characters, and matches any single character that is
|
||||
a member of that set.
|
||||
</p>
|
||||
<p>
|
||||
A bracket expression may contain any combination of the following:
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.single_characters_"></a><h6>
|
||||
<a name="id519355"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.single_characters_">Single
|
||||
characters:</a>
|
||||
</h6>
|
||||
<p>
|
||||
For example <code class="computeroutput"><span class="special">[</span><span class="identifier">abc</span><span class="special">]</span></code>, will match any of the characters 'a', 'b',
|
||||
or 'c'.
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.character_ranges_"></a><h6>
|
||||
<a name="id519408"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.character_ranges_">Character
|
||||
ranges:</a>
|
||||
</h6>
|
||||
<p>
|
||||
For example <code class="computeroutput"><span class="special">[</span><span class="identifier">a</span><span class="special">-</span><span class="identifier">c</span><span class="special">]</span></code>
|
||||
will match any single character in the range 'a' to 'c'. By default, for
|
||||
POSIX-Basic regular expressions, a character <span class="emphasis"><em>x</em></span> is within
|
||||
the range <span class="emphasis"><em>y</em></span> to <span class="emphasis"><em>z</em></span>, if it collates
|
||||
within that range; this results in locale specific behavior. This behavior
|
||||
can be turned off by unsetting the <code class="computeroutput"><span class="identifier">collate</span></code>
|
||||
option flag when constructing the regular expression - in which case whether
|
||||
a character appears within a range is determined by comparing the code points
|
||||
of the characters only.
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.negation_"></a><h6>
|
||||
<a name="id519501"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.negation_">Negation:</a>
|
||||
</h6>
|
||||
<p>
|
||||
If the bracket-expression begins with the ^ character, then it matches the
|
||||
complement of the characters it contains, for example <code class="computeroutput"><span class="special">[^</span><span class="identifier">a</span><span class="special">-</span><span class="identifier">c</span><span class="special">]</span></code> matches any character that is not in the
|
||||
range a-c.
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.character_classes_"></a><h6>
|
||||
<a name="id519563"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.character_classes_">Character
|
||||
classes:</a>
|
||||
</h6>
|
||||
<p>
|
||||
An expression of the form <code class="computeroutput"><span class="special">[[:</span><span class="identifier">name</span><span class="special">:]]</span></code>
|
||||
matches the named character class "name", for example <code class="computeroutput"><span class="special">[[:</span><span class="identifier">lower</span><span class="special">:]]</span></code> matches any lower case character. See
|
||||
<a href="character_classes.html" title="Character Class Names">character class names</a>.
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.collating_elements_"></a><h6>
|
||||
<a name="id519647"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.collating_elements_">Collating
|
||||
Elements:</a>
|
||||
</h6>
|
||||
<p>
|
||||
An expression of the form <code class="computeroutput"><span class="special">[[.</span><span class="identifier">col</span><span class="special">.]</span></code> matches
|
||||
the collating element <span class="emphasis"><em>col</em></span>. A collating element is any
|
||||
single character, or any sequence of characters that collates as a single
|
||||
unit. Collating elements may also be used as the end point of a range, for
|
||||
example: <code class="computeroutput"><span class="special">[[.</span><span class="identifier">ae</span><span class="special">.]-</span><span class="identifier">c</span><span class="special">]</span></code>
|
||||
matches the character sequence "ae", plus any single character
|
||||
in the rangle "ae"-c, assuming that "ae" is treated as
|
||||
a single collating element in the current locale.
|
||||
</p>
|
||||
<p>
|
||||
Collating elements may be used in place of escapes (which are not normally
|
||||
allowed inside character sets), for example <code class="computeroutput"><span class="special">[[.^.]</span><span class="identifier">abc</span><span class="special">]</span></code> would
|
||||
match either one of the characters 'abc^'.
|
||||
</p>
|
||||
<p>
|
||||
As an extension, a collating element may also be specified via its symbolic
|
||||
name, for example:
|
||||
</p>
|
||||
<pre class="programlisting">[[.NUL.]]</pre>
|
||||
<p>
|
||||
matches a 'NUL' character. See <a href="collating_names.html" title="Collating Names">collating
|
||||
element names</a>.
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.equivalence_classes_"></a><h6>
|
||||
<a name="id519794"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.equivalence_classes_">Equivalence
|
||||
classes:</a>
|
||||
</h6>
|
||||
<p>
|
||||
An expression of theform <code class="computeroutput"><span class="special">[[=</span><span class="identifier">col</span><span class="special">=]]</span></code>,
|
||||
matches any character or collating element whose primary sort key is the
|
||||
same as that for collating element <span class="emphasis"><em>col</em></span>, as with collating
|
||||
elements the name <span class="emphasis"><em>col</em></span> may be a <a href="collating_names.html" title="Collating Names">collating
|
||||
symbolic name</a>. A primary sort key is one that ignores case, accentation,
|
||||
or locale-specific tailorings; so for example <code class="computeroutput"><span class="special">[[=</span><span class="identifier">a</span><span class="special">=]]</span></code> matches
|
||||
any of the characters: a, <20>, <20>, <20>, <20>, <20>, <20>, A, <20>, <20>, <20>, <20>, <20> and <20>. Unfortunately implementation
|
||||
of this is reliant on the platform's collation and localisation support;
|
||||
this feature can not be relied upon to work portably across all platforms,
|
||||
or even all locales on one platform.
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.combinations_"></a><h6>
|
||||
<a name="id519904"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.combinations_">Combinations:</a>
|
||||
</h6>
|
||||
<p>
|
||||
All of the above can be combined in one character set declaration, for example:
|
||||
<code class="computeroutput"><span class="special">[[:</span><span class="identifier">digit</span><span class="special">:]</span><span class="identifier">a</span><span class="special">-</span><span class="identifier">c</span><span class="special">[.</span><span class="identifier">NUL</span><span class="special">.]].</span></code>
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.escapes"></a><h5>
|
||||
<a name="id519982"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.escapes">Escapes</a>
|
||||
</h5>
|
||||
<p>
|
||||
With the exception of the escape sequences \{, \}, \(, and \), which are
|
||||
documented above, an escape followed by any character matches that character.
|
||||
This can be used to make the special characters
|
||||
</p>
|
||||
<pre class="programlisting">.[\*^$</pre>
|
||||
<p>
|
||||
"ordinary". Note that the escape character loses its special meaning
|
||||
inside a character set, so <code class="computeroutput"><span class="special">[\^]</span></code>
|
||||
will match either a literal '\' or a '^'.
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.what_gets_matched"></a><h4>
|
||||
<a name="id520041"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.what_gets_matched">What Gets
|
||||
Matched</a>
|
||||
</h4>
|
||||
<p>
|
||||
When there is more that one way to match a regular expression, the "best"
|
||||
possible match is obtained using the <a href="leftmost_longest_rule.html" title="The Leftmost Longest Rule">leftmost-longest
|
||||
rule</a>.
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.variations"></a><h4>
|
||||
<a name="id520082"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.variations">Variations</a>
|
||||
</h4>
|
||||
<a name="boost_regex.grep_syntax"></a><p>
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.grep"></a><h5>
|
||||
<a name="id520116"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.grep">Grep</a>
|
||||
</h5>
|
||||
<p>
|
||||
When an expression is compiled with the flag <code class="computeroutput"><span class="identifier">grep</span></code>
|
||||
set, then the expression is treated as a newline separated list of <a href="basic_syntax.html#boost_regex.posix_basic">POSIX-Basic expressions</a>, a match
|
||||
is found if any of the expressions in the list match, for example:
|
||||
</p>
|
||||
<pre class="programlisting">
|
||||
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex</span> <span class="identifier">e</span><span class="special">(</span><span class="string">"abc\ndef"</span><span class="special">,</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex</span><span class="special">::</span><span class="identifier">grep</span><span class="special">);</span>
|
||||
</pre>
|
||||
<p>
|
||||
will match either of the <a href="basic_syntax.html#boost_regex.posix_basic">POSIX-Basic
|
||||
expressions</a> "abc" or "def".
|
||||
</p>
|
||||
<p>
|
||||
As its name suggests, this behavior is consistent with the Unix utility grep.
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.emacs"></a><h5>
|
||||
<a name="id520263"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.emacs">emacs</a>
|
||||
</h5>
|
||||
<p>
|
||||
In addition to the <a href="basic_syntax.html#boost_regex.posix_basic">POSIX-Basic features</a>
|
||||
the following characters are also special:
|
||||
</p>
|
||||
<div class="informaltable"><table class="table">
|
||||
<colgroup>
|
||||
<col>
|
||||
<col>
|
||||
</colgroup>
|
||||
<thead><tr>
|
||||
<th>
|
||||
<p>
|
||||
Character
|
||||
</p>
|
||||
</th>
|
||||
<th>
|
||||
<p>
|
||||
Description
|
||||
</p>
|
||||
</th>
|
||||
</tr></thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
+
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
repeats the preceding atom one or more times.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
?
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
repeats the preceding atom zero or one times.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
*?
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
A non-greedy version of *.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
+?
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
A non-greedy version of +.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
??
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
A non-greedy version of ?.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
</tbody>
|
||||
</table></div>
|
||||
<p>
|
||||
And the following escape sequences are also recognised:
|
||||
</p>
|
||||
<div class="informaltable"><table class="table">
|
||||
<colgroup>
|
||||
<col>
|
||||
<col>
|
||||
</colgroup>
|
||||
<thead><tr>
|
||||
<th>
|
||||
<p>
|
||||
Escape
|
||||
</p>
|
||||
</th>
|
||||
<th>
|
||||
<p>
|
||||
Description
|
||||
</p>
|
||||
</th>
|
||||
</tr></thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
\|
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
specifies an alternative.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
\(?: ... )
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
is a non-marking grouping construct - allows you to lexically group
|
||||
something without spitting out an extra sub-expression.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
\w
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
matches any word character.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
\W
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
matches any non-word character.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
\sx
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
matches any character in the syntax group x, the following emacs
|
||||
groupings are supported: 's', ' ', '_', 'w', '.', ')', '(', '"',
|
||||
'\'', '>' and '<'. Refer to the emacs docs for details.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
\Sx
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
matches any character not in the syntax grouping x.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
\c and \C
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
These are not supported.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
\`
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
matches zero characters only at the start of a buffer (or string
|
||||
being matched).
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
\'
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
matches zero characters only at the end of a buffer (or string being
|
||||
matched).
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
\b
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
matches zero characters at a word boundary.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
\B
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
matches zero characters, not at a word boundary.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
\<
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
matches zero characters only at the start of a word.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
\>
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
matches zero characters only at the end of a word.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
</tbody>
|
||||
</table></div>
|
||||
<p>
|
||||
Finally, you should note that emacs style regular expressions are matched
|
||||
according to the <a href="perl_syntax.html#boost_regex.syntax.perl_syntax.what_gets_matched">Perl
|
||||
"depth first search" rules</a>. Emacs expressions are matched
|
||||
this way because they contain Perl-like extensions, that do not interact
|
||||
well with the <a href="leftmost_longest_rule.html" title="The Leftmost Longest Rule">POSIX-style
|
||||
leftmost-longest rule</a>.
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.options"></a><h4>
|
||||
<a name="id520760"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.options">Options</a>
|
||||
</h4>
|
||||
<p>
|
||||
There are a <a href="../ref/syntax_option_type/syntax_option_type_basic.html" title="Options for POSIX Basic Regular Expressions">variety
|
||||
of flags</a> that may be combined with the <code class="computeroutput"><span class="identifier">basic</span></code>
|
||||
and <code class="computeroutput"><span class="identifier">grep</span></code> options when constructing
|
||||
the regular expression, in particular note that the <a href="../ref/syntax_option_type/syntax_option_type_basic.html" title="Options for POSIX Basic Regular Expressions"><code class="computeroutput"><span class="identifier">newline_alt</span></code>, <code class="computeroutput"><span class="identifier">no_char_classes</span></code>,
|
||||
<code class="computeroutput"><span class="identifier">no</span><span class="special">-</span><span class="identifier">intervals</span></code>, <code class="computeroutput"><span class="identifier">bk_plus_qm</span></code>
|
||||
and <code class="computeroutput"><span class="identifier">bk_plus_vbar</span></code></a> options
|
||||
all alter the syntax, while the <a href="../ref/syntax_option_type/syntax_option_type_basic.html" title="Options for POSIX Basic Regular Expressions"><code class="computeroutput"><span class="identifier">collate</span></code> and <code class="computeroutput"><span class="identifier">icase</span></code>
|
||||
options</a> modify how the case and locale sensitivity are to be applied.
|
||||
</p>
|
||||
<a name="boost_regex.syntax.basic_syntax.references"></a><h4>
|
||||
<a name="id520935"></a>
|
||||
<a href="basic_syntax.html#boost_regex.syntax.basic_syntax.references">References</a>
|
||||
</h4>
|
||||
<p>
|
||||
<a href="http://www.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap09.html" target="_top">IEEE
|
||||
Std 1003.1-2001, Portable Operating System Interface (POSIX ), Base Definitions
|
||||
and Headers, Section 9, Regular Expressions (FWD.1).</a>
|
||||
</p>
|
||||
<p>
|
||||
<a href="http://www.opengroup.org/onlinepubs/000095399/utilities/grep.html" target="_top">IEEE
|
||||
Std 1003.1-2001, Portable Operating System Interface (POSIX ), Shells and
|
||||
Utilities, Section 4, Utilities, grep (FWD.1).</a>
|
||||
</p>
|
||||
<p>
|
||||
<a href="http://www.gnu.org/software/emacs/" target="_top">Emacs Version 21.3.</a>
|
||||
</p>
|
||||
</div>
|
||||
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
|
||||
<td align="left"></td>
|
||||
<td align="right"><small>Copyright <20> 2007 John Maddock</small></td>
|
||||
</tr></table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="basic_extended.html"><img src="../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../syntax.html"><img src="../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="character_classes.html"><img src="../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
45
doc/html/boost_regex/syntax/character_classes.html
Normal file
45
doc/html/boost_regex/syntax/character_classes.html
Normal file
@ -0,0 +1,45 @@
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title>Character Class Names</title>
|
||||
<link rel="stylesheet" href="../../../../../../doc/html/boostbook.css" type="text/css">
|
||||
<meta name="generator" content="DocBook XSL Stylesheets Vsnapshot_2006-12-17_0120">
|
||||
<link rel="start" href="../../index.html" title="Boost.Regex">
|
||||
<link rel="up" href="../syntax.html" title="Regular Expression Syntax">
|
||||
<link rel="prev" href="basic_syntax.html" title="POSIX Basic Regular Expression Syntax">
|
||||
<link rel="next" href="character_classes/std_char_clases.html" title="Character Classes that are Always Supported">
|
||||
</head>
|
||||
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
|
||||
<table cellpadding="2" width="100%">
|
||||
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../boost.png"></td>
|
||||
<td align="center"><a href="../../../../../../index.htm">Home</a></td>
|
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<td align="center"><a href="../../../../../../libs/libraries.htm">Libraries</a></td>
|
||||
<td align="center"><a href="../../../../../../people/people.htm">People</a></td>
|
||||
<td align="center"><a href="../../../../../../more/faq.htm">FAQ</a></td>
|
||||
<td align="center"><a href="../../../../../../more/index.htm">More</a></td>
|
||||
</table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="basic_syntax.html"><img src="../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../syntax.html"><img src="../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="character_classes/std_char_clases.html"><img src="../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
<div class="section" lang="en">
|
||||
<div class="titlepage"><div><div><h3 class="title">
|
||||
<a name="boost_regex.syntax.character_classes"></a><a href="character_classes.html" title="Character Class Names"> Character Class
|
||||
Names</a></h3></div></div></div>
|
||||
<div class="toc"><dl>
|
||||
<dt><span class="section"><a href="character_classes/std_char_clases.html">
|
||||
Character Classes that are Always Supported</a></span></dt>
|
||||
<dt><span class="section"><a href="character_classes/optional_char_class_names.html">
|
||||
Character classes that are supported by Unicode Regular Expressions</a></span></dt>
|
||||
</dl></div>
|
||||
</div>
|
||||
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
|
||||
<td align="left"></td>
|
||||
<td align="right"><small>Copyright <20> 2007 John Maddock</small></td>
|
||||
</tr></table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
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<a accesskey="p" href="basic_syntax.html"><img src="../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../syntax.html"><img src="../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="character_classes/std_char_clases.html"><img src="../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
@ -0,0 +1,542 @@
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title>Character classes that are supported by Unicode Regular Expressions</title>
|
||||
<link rel="stylesheet" href="../../../../../../../doc/html/boostbook.css" type="text/css">
|
||||
<meta name="generator" content="DocBook XSL Stylesheets Vsnapshot_2006-12-17_0120">
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<link rel="start" href="../../../index.html" title="Boost.Regex">
|
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<link rel="up" href="../character_classes.html" title="Character Class Names">
|
||||
<link rel="prev" href="std_char_clases.html" title="Character Classes that are Always Supported">
|
||||
<link rel="next" href="../collating_names.html" title="Collating Names">
|
||||
</head>
|
||||
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
|
||||
<table cellpadding="2" width="100%">
|
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<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../boost.png"></td>
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<td align="center"><a href="../../../../../../../index.htm">Home</a></td>
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<td align="center"><a href="../../../../../../../libs/libraries.htm">Libraries</a></td>
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<td align="center"><a href="../../../../../../../people/people.htm">People</a></td>
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<td align="center"><a href="../../../../../../../more/faq.htm">FAQ</a></td>
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||||
<td align="center"><a href="../../../../../../../more/index.htm">More</a></td>
|
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</table>
|
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<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="std_char_clases.html"><img src="../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../character_classes.html"><img src="../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../collating_names.html"><img src="../../../../../../../doc/html/images/next.png" alt="Next"></a>
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||||
</div>
|
||||
<div class="section" lang="en">
|
||||
<div class="titlepage"><div><div><h4 class="title">
|
||||
<a name="boost_regex.syntax.character_classes.optional_char_class_names"></a><a href="optional_char_class_names.html" title="Character classes that are supported by Unicode Regular Expressions">
|
||||
Character classes that are supported by Unicode Regular Expressions</a></h4></div></div></div>
|
||||
<p>
|
||||
The following character classes are only supported by Unicode Regular Expressions:
|
||||
that is those that use the <code class="computeroutput"><span class="identifier">u32regex</span></code>
|
||||
type. The names used are the same as those from Chapter 4 of the Unicode
|
||||
standard.
|
||||
</p>
|
||||
<div class="informaltable"><table class="table">
|
||||
<colgroup>
|
||||
<col>
|
||||
<col>
|
||||
</colgroup>
|
||||
<thead><tr>
|
||||
<th>
|
||||
<p>
|
||||
Short Name
|
||||
</p>
|
||||
</th>
|
||||
<th>
|
||||
<p>
|
||||
Long Name
|
||||
</p>
|
||||
</th>
|
||||
</tr></thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
ASCII
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Assigned
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
C*
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Other
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Cc
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Control
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Cf
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Format
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Cn
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Not Assigned
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Co
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Private Use
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Cs
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Surrogate
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
L*
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Letter
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Ll
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Lowercase Letter
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Lm
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Modifier Letter
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Lo
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Other Letter
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Lt
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Titlecase
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Lu
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Uppercase Letter
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
M*
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Mark
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Mc
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Spacing Combining Mark
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Me
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Enclosing Mark
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Mn
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Non-Spacing Mark
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
N*
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Number
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Nd
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Decimal Digit Number
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Nl
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Letter Number
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
No
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Other Number
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
P*
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Punctuation
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Pc
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Connector Punctuation
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Pd
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Dash Punctuation
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Pe
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Close Punctuation
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Pf
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Final Punctuation
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Pi
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Initial Punctuation
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Po
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Other Punctuation
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Ps
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Open Punctuation
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
S*
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Symbol
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Sc
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Currency Symbol
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Sk
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Modifier Symbol
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Sm
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Math Symbol
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
So
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Other Symbol
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Z*
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Separator
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Zl
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Line Separator
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Zp
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Paragraph Separator
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
Zs
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Space Separator
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
</tbody>
|
||||
</table></div>
|
||||
</div>
|
||||
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
|
||||
<td align="left"></td>
|
||||
<td align="right"><small>Copyright <20> 2007 John Maddock</small></td>
|
||||
</tr></table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="std_char_clases.html"><img src="../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../character_classes.html"><img src="../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../collating_names.html"><img src="../../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
@ -0,0 +1,391 @@
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title>Character Classes that are Always Supported</title>
|
||||
<link rel="stylesheet" href="../../../../../../../doc/html/boostbook.css" type="text/css">
|
||||
<meta name="generator" content="DocBook XSL Stylesheets Vsnapshot_2006-12-17_0120">
|
||||
<link rel="start" href="../../../index.html" title="Boost.Regex">
|
||||
<link rel="up" href="../character_classes.html" title="Character Class Names">
|
||||
<link rel="prev" href="../character_classes.html" title="Character Class Names">
|
||||
<link rel="next" href="optional_char_class_names.html" title="Character classes that are supported by Unicode Regular Expressions">
|
||||
</head>
|
||||
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
|
||||
<table cellpadding="2" width="100%">
|
||||
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../boost.png"></td>
|
||||
<td align="center"><a href="../../../../../../../index.htm">Home</a></td>
|
||||
<td align="center"><a href="../../../../../../../libs/libraries.htm">Libraries</a></td>
|
||||
<td align="center"><a href="../../../../../../../people/people.htm">People</a></td>
|
||||
<td align="center"><a href="../../../../../../../more/faq.htm">FAQ</a></td>
|
||||
<td align="center"><a href="../../../../../../../more/index.htm">More</a></td>
|
||||
</table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="../character_classes.html"><img src="../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../character_classes.html"><img src="../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="optional_char_class_names.html"><img src="../../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
<div class="section" lang="en">
|
||||
<div class="titlepage"><div><div><h4 class="title">
|
||||
<a name="boost_regex.syntax.character_classes.std_char_clases"></a><a href="std_char_clases.html" title="Character Classes that are Always Supported">
|
||||
Character Classes that are Always Supported</a></h4></div></div></div>
|
||||
<p>
|
||||
The following character class names are always supported by Boost.Regex:
|
||||
</p>
|
||||
<div class="informaltable"><table class="table">
|
||||
<colgroup>
|
||||
<col>
|
||||
<col>
|
||||
<col>
|
||||
</colgroup>
|
||||
<thead><tr>
|
||||
<th>
|
||||
<p>
|
||||
Name
|
||||
</p>
|
||||
</th>
|
||||
<th>
|
||||
<p>
|
||||
POSIX-standard name
|
||||
</p>
|
||||
</th>
|
||||
<th>
|
||||
<p>
|
||||
Description
|
||||
</p>
|
||||
</th>
|
||||
</tr></thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
alnum
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Yes
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any alpha-numeric character.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
alpha
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Yes
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any alphabetic character.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
blank
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Yes
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any whitespace character that is not a line separator.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
cntrl
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Yes
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any control character.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
d
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
No
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any decimal digit
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
digit
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Yes
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any decimal digit.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
graph
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Yes
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any graphical character.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
l
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
No
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any lower case character.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
lower
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Yes
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any lower case character.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
print
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Yes
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any printable character.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
punct
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Yes
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any punctuation character.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
s
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
No
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any whitespace character.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
space
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Yes
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any whitespace character.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
unicode
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
No
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any extended character whose code point is above 255 in value.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
u
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
No
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any upper case character.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
upper
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Yes
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any upper case character.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
w
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
No
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any word character (alphanumeric characters plus the underscore).
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
word
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
No
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any word character (alphanumeric characters plus the underscore).
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
xdigit
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Yes
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
Any hexadecimal digit character.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
</tbody>
|
||||
</table></div>
|
||||
</div>
|
||||
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
|
||||
<td align="left"></td>
|
||||
<td align="right"><small>Copyright <20> 2007 John Maddock</small></td>
|
||||
</tr></table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="../character_classes.html"><img src="../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../character_classes.html"><img src="../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="optional_char_class_names.html"><img src="../../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
45
doc/html/boost_regex/syntax/collating_names.html
Normal file
45
doc/html/boost_regex/syntax/collating_names.html
Normal file
@ -0,0 +1,45 @@
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title>Collating Names</title>
|
||||
<link rel="stylesheet" href="../../../../../../doc/html/boostbook.css" type="text/css">
|
||||
<meta name="generator" content="DocBook XSL Stylesheets Vsnapshot_2006-12-17_0120">
|
||||
<link rel="start" href="../../index.html" title="Boost.Regex">
|
||||
<link rel="up" href="../syntax.html" title="Regular Expression Syntax">
|
||||
<link rel="prev" href="character_classes/optional_char_class_names.html" title="Character classes that are supported by Unicode Regular Expressions">
|
||||
<link rel="next" href="collating_names/digraphs.html" title="Digraphs">
|
||||
</head>
|
||||
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
|
||||
<table cellpadding="2" width="100%">
|
||||
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../boost.png"></td>
|
||||
<td align="center"><a href="../../../../../../index.htm">Home</a></td>
|
||||
<td align="center"><a href="../../../../../../libs/libraries.htm">Libraries</a></td>
|
||||
<td align="center"><a href="../../../../../../people/people.htm">People</a></td>
|
||||
<td align="center"><a href="../../../../../../more/faq.htm">FAQ</a></td>
|
||||
<td align="center"><a href="../../../../../../more/index.htm">More</a></td>
|
||||
</table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="character_classes/optional_char_class_names.html"><img src="../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../syntax.html"><img src="../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="collating_names/digraphs.html"><img src="../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
<div class="section" lang="en">
|
||||
<div class="titlepage"><div><div><h3 class="title">
|
||||
<a name="boost_regex.syntax.collating_names"></a><a href="collating_names.html" title="Collating Names"> Collating Names</a></h3></div></div></div>
|
||||
<div class="toc"><dl>
|
||||
<dt><span class="section"><a href="collating_names/digraphs.html"> Digraphs</a></span></dt>
|
||||
<dt><span class="section"><a href="collating_names/posix_symbolic_names.html">
|
||||
POSIX Symbolic Names</a></span></dt>
|
||||
<dt><span class="section"><a href="collating_names/named_unicode.html">
|
||||
Named Unicode Characters</a></span></dt>
|
||||
</dl></div>
|
||||
</div>
|
||||
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
|
||||
<td align="left"></td>
|
||||
<td align="right"><small>Copyright <20> 2007 John Maddock</small></td>
|
||||
</tr></table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="character_classes/optional_char_class_names.html"><img src="../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../syntax.html"><img src="../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="collating_names/digraphs.html"><img src="../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
56
doc/html/boost_regex/syntax/collating_names/digraphs.html
Normal file
56
doc/html/boost_regex/syntax/collating_names/digraphs.html
Normal file
@ -0,0 +1,56 @@
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title>Digraphs</title>
|
||||
<link rel="stylesheet" href="../../../../../../../doc/html/boostbook.css" type="text/css">
|
||||
<meta name="generator" content="DocBook XSL Stylesheets Vsnapshot_2006-12-17_0120">
|
||||
<link rel="start" href="../../../index.html" title="Boost.Regex">
|
||||
<link rel="up" href="../collating_names.html" title="Collating Names">
|
||||
<link rel="prev" href="../collating_names.html" title="Collating Names">
|
||||
<link rel="next" href="posix_symbolic_names.html" title="POSIX Symbolic Names">
|
||||
</head>
|
||||
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
|
||||
<table cellpadding="2" width="100%">
|
||||
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../boost.png"></td>
|
||||
<td align="center"><a href="../../../../../../../index.htm">Home</a></td>
|
||||
<td align="center"><a href="../../../../../../../libs/libraries.htm">Libraries</a></td>
|
||||
<td align="center"><a href="../../../../../../../people/people.htm">People</a></td>
|
||||
<td align="center"><a href="../../../../../../../more/faq.htm">FAQ</a></td>
|
||||
<td align="center"><a href="../../../../../../../more/index.htm">More</a></td>
|
||||
</table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="../collating_names.html"><img src="../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../collating_names.html"><img src="../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="posix_symbolic_names.html"><img src="../../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
<div class="section" lang="en">
|
||||
<div class="titlepage"><div><div><h4 class="title">
|
||||
<a name="boost_regex.syntax.collating_names.digraphs"></a><a href="digraphs.html" title="Digraphs"> Digraphs</a></h4></div></div></div>
|
||||
<p>
|
||||
The following are treated as valid digraphs when used as a collating name:
|
||||
</p>
|
||||
<p>
|
||||
"ae", "Ae", "AE", "ch", "Ch",
|
||||
"CH", "ll", "Ll", "LL", "ss",
|
||||
"Ss", "SS", "nj", "Nj", "NJ",
|
||||
"dz", "Dz", "DZ", "lj", "Lj",
|
||||
"LJ".
|
||||
</p>
|
||||
<p>
|
||||
So for example the expression:
|
||||
</p>
|
||||
<pre class="programlisting">[[.ae.]-c] </pre>
|
||||
<p>
|
||||
will match any character that collates between the digraph "ae"
|
||||
and the character "c".
|
||||
</p>
|
||||
</div>
|
||||
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
|
||||
<td align="left"></td>
|
||||
<td align="right"><small>Copyright <20> 2007 John Maddock</small></td>
|
||||
</tr></table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="../collating_names.html"><img src="../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../collating_names.html"><img src="../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="posix_symbolic_names.html"><img src="../../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
@ -0,0 +1,49 @@
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title>Named Unicode Characters</title>
|
||||
<link rel="stylesheet" href="../../../../../../../doc/html/boostbook.css" type="text/css">
|
||||
<meta name="generator" content="DocBook XSL Stylesheets Vsnapshot_2006-12-17_0120">
|
||||
<link rel="start" href="../../../index.html" title="Boost.Regex">
|
||||
<link rel="up" href="../collating_names.html" title="Collating Names">
|
||||
<link rel="prev" href="posix_symbolic_names.html" title="POSIX Symbolic Names">
|
||||
<link rel="next" href="../leftmost_longest_rule.html" title="The Leftmost Longest Rule">
|
||||
</head>
|
||||
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
|
||||
<table cellpadding="2" width="100%">
|
||||
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../boost.png"></td>
|
||||
<td align="center"><a href="../../../../../../../index.htm">Home</a></td>
|
||||
<td align="center"><a href="../../../../../../../libs/libraries.htm">Libraries</a></td>
|
||||
<td align="center"><a href="../../../../../../../people/people.htm">People</a></td>
|
||||
<td align="center"><a href="../../../../../../../more/faq.htm">FAQ</a></td>
|
||||
<td align="center"><a href="../../../../../../../more/index.htm">More</a></td>
|
||||
</table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="posix_symbolic_names.html"><img src="../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../collating_names.html"><img src="../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../leftmost_longest_rule.html"><img src="../../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
<div class="section" lang="en">
|
||||
<div class="titlepage"><div><div><h4 class="title">
|
||||
<a name="boost_regex.syntax.collating_names.named_unicode"></a><a href="named_unicode.html" title="Named Unicode Characters">
|
||||
Named Unicode Characters</a></h4></div></div></div>
|
||||
<p>
|
||||
When using <a href="../../unicode.html" title="Unicode and Boost.Regex">Unicode aware regular expressions</a>
|
||||
(with the <code class="computeroutput"><span class="identifier">u32regex</span></code> type),
|
||||
all the normal symbolic names for Unicode characters (those given in Unidata.txt)
|
||||
are recognised. So for example:
|
||||
</p>
|
||||
<pre class="programlisting">[[.CYRILLIC CAPITAL LETTER I.]] </pre>
|
||||
<p>
|
||||
would match the Unicode character 0x0418.
|
||||
</p>
|
||||
</div>
|
||||
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
|
||||
<td align="left"></td>
|
||||
<td align="right"><small>Copyright <20> 2007 John Maddock</small></td>
|
||||
</tr></table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="posix_symbolic_names.html"><img src="../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../collating_names.html"><img src="../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../leftmost_longest_rule.html"><img src="../../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
@ -0,0 +1,980 @@
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title>POSIX Symbolic Names</title>
|
||||
<link rel="stylesheet" href="../../../../../../../doc/html/boostbook.css" type="text/css">
|
||||
<meta name="generator" content="DocBook XSL Stylesheets Vsnapshot_2006-12-17_0120">
|
||||
<link rel="start" href="../../../index.html" title="Boost.Regex">
|
||||
<link rel="up" href="../collating_names.html" title="Collating Names">
|
||||
<link rel="prev" href="digraphs.html" title="Digraphs">
|
||||
<link rel="next" href="named_unicode.html" title="Named Unicode Characters">
|
||||
</head>
|
||||
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
|
||||
<table cellpadding="2" width="100%">
|
||||
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../boost.png"></td>
|
||||
<td align="center"><a href="../../../../../../../index.htm">Home</a></td>
|
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<td align="center"><a href="../../../../../../../libs/libraries.htm">Libraries</a></td>
|
||||
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|
||||
<td align="center"><a href="../../../../../../../more/faq.htm">FAQ</a></td>
|
||||
<td align="center"><a href="../../../../../../../more/index.htm">More</a></td>
|
||||
</table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="digraphs.html"><img src="../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../collating_names.html"><img src="../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="named_unicode.html"><img src="../../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
<div class="section" lang="en">
|
||||
<div class="titlepage"><div><div><h4 class="title">
|
||||
<a name="boost_regex.syntax.collating_names.posix_symbolic_names"></a><a href="posix_symbolic_names.html" title="POSIX Symbolic Names">
|
||||
POSIX Symbolic Names</a></h4></div></div></div>
|
||||
<p>
|
||||
The following symbolic names are recognised as valid collating element
|
||||
names, in addition to any single character, this allows you to write for
|
||||
example:
|
||||
</p>
|
||||
<pre class="programlisting">[[.left-square-bracket.][.right-square-bracket.]]</pre>
|
||||
<p>
|
||||
if you wanted to match either "[" or "]".
|
||||
</p>
|
||||
<div class="informaltable"><table class="table">
|
||||
<colgroup>
|
||||
<col>
|
||||
<col>
|
||||
</colgroup>
|
||||
<thead><tr>
|
||||
<th>
|
||||
<p>
|
||||
Name
|
||||
</p>
|
||||
</th>
|
||||
<th>
|
||||
<p>
|
||||
Character
|
||||
</p>
|
||||
</th>
|
||||
</tr></thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
NUL
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x00
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
SOH
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x01
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
STX
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x02
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
ETX
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x03
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
EOT
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x04
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
ENQ
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x05
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
ACK
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x06
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
alert
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x07
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
backspace
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x08
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
tab
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\t
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
newline
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\n
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
vertical-tab
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\v
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
form-feed
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\f
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
carriage-return
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\r
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
SO
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\xE
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
SI
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\xF
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
DLE
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x10
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
DC1
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x11
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
DC2
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x12
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
DC3
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x13
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
DC4
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x14
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
NAK
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x15
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
SYN
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x16
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
ETB
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x17
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
CAN
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x18
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
EM
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x19
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
SUB
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x1A
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
ESC
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x1B
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
IS4
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x1C
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
IS3
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x1D
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
IS2
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x1E
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
IS1
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x1F
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
space
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x20
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
exclamation-mark
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
!
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
quotation-mark
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
"
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
number-sign
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
#
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
dollar-sign
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
$
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
percent-sign
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
%
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
ampersand
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
&
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
apostrophe
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
'
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
left-parenthesis
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
(
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
right-parenthesis
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
)
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
asterisk
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
*
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
plus-sign
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
+
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
comma
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
,
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
hyphen
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
-
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
period
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
.
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
slash
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
/
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
zero
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
0
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
one
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
1
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
two
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
2
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
three
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
3
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
four
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
4
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
five
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
5
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
six
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
6
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
seven
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
7
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
eight
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
8
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
nine
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
9
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
colon
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
:
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
semicolon
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
;
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
less-than-sign
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
<
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
equals-sign
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
=
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
greater-than-sign
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
>
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
question-mark
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
?
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
commercial-at
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
@
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
left-square-bracket
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
[
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
backslash
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
right-square-bracket
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
]
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
circumflex
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
~
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
underscore
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
_
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
grave-accent
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
`
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
left-curly-bracket
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
{
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
vertical-line
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
|
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
right-curly-bracket
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
}
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
tilde
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
~
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td>
|
||||
<p>
|
||||
DEL
|
||||
</p>
|
||||
</td>
|
||||
<td>
|
||||
<p>
|
||||
\x7F
|
||||
</p>
|
||||
</td>
|
||||
</tr>
|
||||
</tbody>
|
||||
</table></div>
|
||||
</div>
|
||||
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
|
||||
<td align="left"></td>
|
||||
<td align="right"><small>Copyright <20> 2007 John Maddock</small></td>
|
||||
</tr></table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="digraphs.html"><img src="../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../collating_names.html"><img src="../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="named_unicode.html"><img src="../../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
74
doc/html/boost_regex/syntax/leftmost_longest_rule.html
Normal file
74
doc/html/boost_regex/syntax/leftmost_longest_rule.html
Normal file
@ -0,0 +1,74 @@
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title>The Leftmost Longest Rule</title>
|
||||
<link rel="stylesheet" href="../../../../../../doc/html/boostbook.css" type="text/css">
|
||||
<meta name="generator" content="DocBook XSL Stylesheets Vsnapshot_2006-12-17_0120">
|
||||
<link rel="start" href="../../index.html" title="Boost.Regex">
|
||||
<link rel="up" href="../syntax.html" title="Regular Expression Syntax">
|
||||
<link rel="prev" href="collating_names/named_unicode.html" title="Named Unicode Characters">
|
||||
<link rel="next" href="../format.html" title="Search and Replace Format String Syntax">
|
||||
</head>
|
||||
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
|
||||
<table cellpadding="2" width="100%">
|
||||
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../boost.png"></td>
|
||||
<td align="center"><a href="../../../../../../index.htm">Home</a></td>
|
||||
<td align="center"><a href="../../../../../../libs/libraries.htm">Libraries</a></td>
|
||||
<td align="center"><a href="../../../../../../people/people.htm">People</a></td>
|
||||
<td align="center"><a href="../../../../../../more/faq.htm">FAQ</a></td>
|
||||
<td align="center"><a href="../../../../../../more/index.htm">More</a></td>
|
||||
</table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="collating_names/named_unicode.html"><img src="../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../syntax.html"><img src="../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../format.html"><img src="../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
<div class="section" lang="en">
|
||||
<div class="titlepage"><div><div><h3 class="title">
|
||||
<a name="boost_regex.syntax.leftmost_longest_rule"></a><a href="leftmost_longest_rule.html" title="The Leftmost Longest Rule"> The Leftmost
|
||||
Longest Rule</a></h3></div></div></div>
|
||||
<p>
|
||||
Often there is more than one way of matching a regular expression at a particular
|
||||
location, for POSIX basic and extended regular expressions, the "best"
|
||||
match is determined as follows:
|
||||
</p>
|
||||
<div class="orderedlist"><ol type="1">
|
||||
<li>
|
||||
Find the leftmost match, if there is only one match possible at this location
|
||||
then return it.
|
||||
</li>
|
||||
<li>
|
||||
Find the longest of the possible matches, along with any ties. If there
|
||||
is only one such possible match then return it.
|
||||
</li>
|
||||
<li>
|
||||
If there are no marked sub-expressions, then all the remaining alternatives
|
||||
are indistinguishable; return the first of these found.
|
||||
</li>
|
||||
<li>
|
||||
Find the match which has matched the first sub-expression in the leftmost
|
||||
position, along with any ties. If there is only on such match possible
|
||||
then return it.
|
||||
</li>
|
||||
<li>
|
||||
Find the match which has the longest match for the first sub-expression,
|
||||
along with any ties. If there is only one such match then return it.
|
||||
</li>
|
||||
<li>
|
||||
Repeat steps 4 and 5 for each additional marked sub-expression.
|
||||
</li>
|
||||
<li>
|
||||
If there is still more than one possible match remaining, then they are
|
||||
indistinguishable; return the first one found.
|
||||
</li>
|
||||
</ol></div>
|
||||
</div>
|
||||
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
|
||||
<td align="left"></td>
|
||||
<td align="right"><small>Copyright <20> 2007 John Maddock</small></td>
|
||||
</tr></table>
|
||||
<hr>
|
||||
<div class="spirit-nav">
|
||||
<a accesskey="p" href="collating_names/named_unicode.html"><img src="../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../syntax.html"><img src="../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../format.html"><img src="../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
1337
doc/html/boost_regex/syntax/perl_syntax.html
Normal file
1337
doc/html/boost_regex/syntax/perl_syntax.html
Normal file
File diff suppressed because it is too large
Load Diff
Reference in New Issue
Block a user