]>
Commit | Line | Data |
---|---|---|
1 | <html> | |
2 | <head> | |
3 | <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> | |
4 | <title>regex_match</title> | |
5 | <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css"> | |
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.77.1"> | |
7 | <link rel="home" href="../../index.html" title="Boost.Regex 5.1.2"> | |
8 | <link rel="up" href="../ref.html" title="Reference"> | |
9 | <link rel="prev" href="sub_match.html" title="sub_match"> | |
10 | <link rel="next" href="regex_search.html" title="regex_search"> | |
11 | </head> | |
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> | |
13 | <table cellpadding="2" width="100%"><tr> | |
14 | <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../boost.png"></td> | |
15 | <td align="center"><a href="../../../../../../index.html">Home</a></td> | |
16 | <td align="center"><a href="../../../../../../libs/libraries.htm">Libraries</a></td> | |
17 | <td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> | |
18 | <td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> | |
19 | <td align="center"><a href="../../../../../../more/index.htm">More</a></td> | |
20 | </tr></table> | |
21 | <hr> | |
22 | <div class="spirit-nav"> | |
23 | <a accesskey="p" href="sub_match.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../ref.html"><img src="../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="regex_search.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> | |
24 | </div> | |
25 | <div class="section"> | |
26 | <div class="titlepage"><div><div><h3 class="title"> | |
27 | <a name="boost_regex.ref.regex_match"></a><a class="link" href="regex_match.html" title="regex_match">regex_match</a> | |
28 | </h3></div></div></div> | |
29 | <pre class="programlisting"><span class="preprocessor">#include</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">hpp</span><span class="special">></span> | |
30 | </pre> | |
31 | <p> | |
32 | The algorithm <a class="link" href="regex_match.html" title="regex_match"><code class="computeroutput"><span class="identifier">regex_match</span></code></a> | |
33 | determines whether a given regular expression matches <span class="bold"><strong>all</strong></span> | |
34 | of a given character sequence denoted by a pair of bidirectional-iterators, | |
35 | the algorithm is defined as follows, the main use of this function is data | |
36 | input validation. | |
37 | </p> | |
38 | <div class="important"><table border="0" summary="Important"> | |
39 | <tr> | |
40 | <td rowspan="2" align="center" valign="top" width="25"><img alt="[Important]" src="../../../../../../doc/src/images/important.png"></td> | |
41 | <th align="left">Important</th> | |
42 | </tr> | |
43 | <tr><td align="left" valign="top"><p> | |
44 | Note that the result is true only if the expression matches the <span class="bold"><strong>whole</strong></span> of the input sequence. If you want to search | |
45 | for an expression somewhere within the sequence then use <a class="link" href="regex_search.html" title="regex_search"><code class="computeroutput"><span class="identifier">regex_search</span></code></a>. If you want to match | |
46 | a prefix of the character string then use <a class="link" href="regex_search.html" title="regex_search"><code class="computeroutput"><span class="identifier">regex_search</span></code></a> with the flag match_continuous | |
47 | set. | |
48 | </p></td></tr> | |
49 | </table></div> | |
50 | <pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">></span> | |
51 | <span class="keyword">bool</span> <span class="identifier">regex_match</span><span class="special">(</span><span class="identifier">BidirectionalIterator</span> <span class="identifier">first</span><span class="special">,</span> <span class="identifier">BidirectionalIterator</span> <span class="identifier">last</span><span class="special">,</span> | |
52 | <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m</span><span class="special">,</span> | |
53 | <span class="keyword">const</span> <span class="identifier">basic_regex</span> <span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">e</span><span class="special">,</span> | |
54 | <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">match_default</span><span class="special">);</span> | |
55 | ||
56 | <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">></span> | |
57 | <span class="keyword">bool</span> <span class="identifier">regex_match</span><span class="special">(</span><span class="identifier">BidirectionalIterator</span> <span class="identifier">first</span><span class="special">,</span> <span class="identifier">BidirectionalIterator</span> <span class="identifier">last</span><span class="special">,</span> | |
58 | <span class="keyword">const</span> <span class="identifier">basic_regex</span> <span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">e</span><span class="special">,</span> | |
59 | <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">match_default</span><span class="special">);</span> | |
60 | ||
61 | <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">></span> | |
62 | <span class="keyword">bool</span> <span class="identifier">regex_match</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">str</span><span class="special">,</span> <span class="identifier">match_results</span><span class="special"><</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m</span><span class="special">,</span> | |
63 | <span class="keyword">const</span> <span class="identifier">basic_regex</span> <span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">e</span><span class="special">,</span> | |
64 | <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">match_default</span><span class="special">);</span> | |
65 | ||
66 | <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">ST</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">SA</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">></span> | |
67 | <span class="keyword">bool</span> <span class="identifier">regex_match</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">ST</span><span class="special">,</span> <span class="identifier">SA</span><span class="special">>&</span> <span class="identifier">s</span><span class="special">,</span> | |
68 | <span class="identifier">match_results</span><span class="special"><</span><span class="keyword">typename</span> <span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">ST</span><span class="special">,</span> <span class="identifier">SA</span><span class="special">>::</span><span class="identifier">const_iterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m</span><span class="special">,</span> | |
69 | <span class="keyword">const</span> <span class="identifier">basic_regex</span> <span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">e</span><span class="special">,</span> | |
70 | <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">match_default</span><span class="special">);</span> | |
71 | ||
72 | <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">></span> | |
73 | <span class="keyword">bool</span> <span class="identifier">regex_match</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">str</span><span class="special">,</span> | |
74 | <span class="keyword">const</span> <span class="identifier">basic_regex</span> <span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">e</span><span class="special">,</span> | |
75 | <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">match_default</span><span class="special">);</span> | |
76 | ||
77 | <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">ST</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">SA</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">></span> | |
78 | <span class="keyword">bool</span> <span class="identifier">regex_match</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">ST</span><span class="special">,</span> <span class="identifier">SA</span><span class="special">>&</span> <span class="identifier">s</span><span class="special">,</span> | |
79 | <span class="keyword">const</span> <span class="identifier">basic_regex</span> <span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">e</span><span class="special">,</span> | |
80 | <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">match_default</span><span class="special">);</span> | |
81 | </pre> | |
82 | <h5> | |
83 | <a name="boost_regex.ref.regex_match.h0"></a> | |
84 | <span class="phrase"><a name="boost_regex.ref.regex_match.description"></a></span><a class="link" href="regex_match.html#boost_regex.ref.regex_match.description">Description</a> | |
85 | </h5> | |
86 | <pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">></span> | |
87 | <span class="keyword">bool</span> <span class="identifier">regex_match</span><span class="special">(</span><span class="identifier">BidirectionalIterator</span> <span class="identifier">first</span><span class="special">,</span> <span class="identifier">BidirectionalIterator</span> <span class="identifier">last</span><span class="special">,</span> | |
88 | <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m</span><span class="special">,</span> | |
89 | <span class="keyword">const</span> <span class="identifier">basic_regex</span> <span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">e</span><span class="special">,</span> | |
90 | <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">match_default</span><span class="special">);</span> | |
91 | </pre> | |
92 | <p> | |
93 | <span class="bold"><strong>Requires</strong></span>: Type BidirectionalIterator meets | |
94 | the requirements of a Bidirectional Iterator (24.1.4). | |
95 | </p> | |
96 | <p> | |
97 | <span class="bold"><strong>Effects</strong></span>: Determines whether there is an | |
98 | exact match between the regular expression <span class="emphasis"><em>e</em></span>, and all | |
99 | of the character sequence [first, last), parameter <span class="emphasis"><em>flags</em></span> | |
100 | (see <a class="link" href="match_flag_type.html" title="match_flag_type"><code class="computeroutput"><span class="identifier">match_flag_type</span></code></a>) | |
101 | is used to control how the expression is matched against the character sequence. | |
102 | Returns true if such a match exists, false otherwise. | |
103 | </p> | |
104 | <p> | |
105 | <span class="bold"><strong>Throws</strong></span>: <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">runtime_error</span></code> | |
106 | if the complexity of matching the expression against an N character string | |
107 | begins to exceed O(N<sup>2</sup>), or if the program runs out of stack space while matching | |
108 | the expression (if Boost.Regex is configured in recursive mode), or if the | |
109 | matcher exhausts its permitted memory allocation (if Boost.Regex is configured | |
110 | in non-recursive mode). | |
111 | </p> | |
112 | <p> | |
113 | <span class="bold"><strong>Postconditions</strong></span>: If the function returns | |
114 | false, then the effect on parameter <span class="emphasis"><em>m</em></span> is undefined, | |
115 | otherwise the effects on parameter <span class="emphasis"><em>m</em></span> are given in the | |
116 | table: | |
117 | </p> | |
118 | <div class="informaltable"><table class="table"> | |
119 | <colgroup> | |
120 | <col> | |
121 | <col> | |
122 | </colgroup> | |
123 | <thead><tr> | |
124 | <th> | |
125 | <p> | |
126 | Element | |
127 | </p> | |
128 | </th> | |
129 | <th> | |
130 | <p> | |
131 | Value | |
132 | </p> | |
133 | </th> | |
134 | </tr></thead> | |
135 | <tbody> | |
136 | <tr> | |
137 | <td> | |
138 | <p> | |
139 | <code class="computeroutput"><span class="identifier">m</span><span class="special">.</span><span class="identifier">size</span><span class="special">()</span></code> | |
140 | </p> | |
141 | </td> | |
142 | <td> | |
143 | <p> | |
144 | <code class="computeroutput"><span class="number">1</span> <span class="special">+</span> | |
145 | <span class="identifier">e</span><span class="special">.</span><span class="identifier">mark_count</span><span class="special">()</span></code> | |
146 | </p> | |
147 | </td> | |
148 | </tr> | |
149 | <tr> | |
150 | <td> | |
151 | <p> | |
152 | <code class="computeroutput"><span class="identifier">m</span><span class="special">.</span><span class="identifier">empty</span><span class="special">()</span></code> | |
153 | </p> | |
154 | </td> | |
155 | <td> | |
156 | <p> | |
157 | <code class="computeroutput"><span class="keyword">false</span></code> | |
158 | </p> | |
159 | </td> | |
160 | </tr> | |
161 | <tr> | |
162 | <td> | |
163 | <p> | |
164 | <code class="computeroutput"><span class="identifier">m</span><span class="special">.</span><span class="identifier">prefix</span><span class="special">().</span><span class="identifier">first</span></code> | |
165 | </p> | |
166 | </td> | |
167 | <td> | |
168 | <p> | |
169 | <code class="computeroutput"><span class="identifier">first</span></code> | |
170 | </p> | |
171 | </td> | |
172 | </tr> | |
173 | <tr> | |
174 | <td> | |
175 | <p> | |
176 | <code class="computeroutput"><span class="identifier">m</span><span class="special">.</span><span class="identifier">prefix</span><span class="special">().</span><span class="identifier">last</span></code> | |
177 | </p> | |
178 | </td> | |
179 | <td> | |
180 | <p> | |
181 | <code class="computeroutput"><span class="identifier">first</span></code> | |
182 | </p> | |
183 | </td> | |
184 | </tr> | |
185 | <tr> | |
186 | <td> | |
187 | <p> | |
188 | <code class="computeroutput"><span class="identifier">m</span><span class="special">.</span><span class="identifier">prefix</span><span class="special">().</span><span class="identifier">matched</span></code> | |
189 | </p> | |
190 | </td> | |
191 | <td> | |
192 | <p> | |
193 | <code class="computeroutput"><span class="keyword">false</span></code> | |
194 | </p> | |
195 | </td> | |
196 | </tr> | |
197 | <tr> | |
198 | <td> | |
199 | <p> | |
200 | <code class="computeroutput"><span class="identifier">m</span><span class="special">.</span><span class="identifier">suffix</span><span class="special">().</span><span class="identifier">first</span></code> | |
201 | </p> | |
202 | </td> | |
203 | <td> | |
204 | <p> | |
205 | <code class="computeroutput"><span class="identifier">last</span></code> | |
206 | </p> | |
207 | </td> | |
208 | </tr> | |
209 | <tr> | |
210 | <td> | |
211 | <p> | |
212 | <code class="computeroutput"><span class="identifier">m</span><span class="special">.</span><span class="identifier">suffix</span><span class="special">().</span><span class="identifier">last</span></code> | |
213 | </p> | |
214 | </td> | |
215 | <td> | |
216 | <p> | |
217 | <code class="computeroutput"><span class="identifier">last</span></code> | |
218 | </p> | |
219 | </td> | |
220 | </tr> | |
221 | <tr> | |
222 | <td> | |
223 | <p> | |
224 | <code class="computeroutput"><span class="identifier">m</span><span class="special">.</span><span class="identifier">suffix</span><span class="special">().</span><span class="identifier">matched</span></code> | |
225 | </p> | |
226 | </td> | |
227 | <td> | |
228 | <p> | |
229 | <code class="computeroutput"><span class="keyword">false</span></code> | |
230 | </p> | |
231 | </td> | |
232 | </tr> | |
233 | <tr> | |
234 | <td> | |
235 | <p> | |
236 | <code class="computeroutput"><span class="identifier">m</span><span class="special">[</span><span class="number">0</span><span class="special">].</span><span class="identifier">first</span></code> | |
237 | </p> | |
238 | </td> | |
239 | <td> | |
240 | <p> | |
241 | <code class="computeroutput"><span class="identifier">first</span></code> | |
242 | </p> | |
243 | </td> | |
244 | </tr> | |
245 | <tr> | |
246 | <td> | |
247 | <p> | |
248 | <code class="computeroutput"><span class="identifier">m</span><span class="special">[</span><span class="number">0</span><span class="special">].</span><span class="identifier">second</span></code> | |
249 | </p> | |
250 | </td> | |
251 | <td> | |
252 | <p> | |
253 | <code class="computeroutput"><span class="identifier">last</span></code> | |
254 | </p> | |
255 | </td> | |
256 | </tr> | |
257 | <tr> | |
258 | <td> | |
259 | <p> | |
260 | <code class="computeroutput"><span class="identifier">m</span><span class="special">[</span><span class="number">0</span><span class="special">].</span><span class="identifier">matched</span></code> | |
261 | </p> | |
262 | </td> | |
263 | <td> | |
264 | <p> | |
265 | true if a full match was found, and false if it was a partial match | |
266 | (found as a result of the match_partial flag being set). | |
267 | </p> | |
268 | </td> | |
269 | </tr> | |
270 | <tr> | |
271 | <td> | |
272 | <p> | |
273 | <code class="computeroutput"><span class="identifier">m</span><span class="special">[</span><span class="identifier">n</span><span class="special">].</span><span class="identifier">first</span></code> | |
274 | </p> | |
275 | </td> | |
276 | <td> | |
277 | <p> | |
278 | For all integers <code class="computeroutput"><span class="identifier">n</span> <span class="special"><</span> <span class="identifier">m</span><span class="special">.</span><span class="identifier">size</span><span class="special">()</span></code>, the start of the sequence that | |
279 | matched sub-expression <span class="emphasis"><em>n</em></span>. Alternatively, if | |
280 | sub-expression <span class="emphasis"><em>n</em></span> did not participate in the | |
281 | match, then <code class="computeroutput"><span class="identifier">last</span></code>. | |
282 | </p> | |
283 | </td> | |
284 | </tr> | |
285 | <tr> | |
286 | <td> | |
287 | <p> | |
288 | <code class="computeroutput"><span class="identifier">m</span><span class="special">[</span><span class="identifier">n</span><span class="special">].</span><span class="identifier">second</span></code> | |
289 | </p> | |
290 | </td> | |
291 | <td> | |
292 | <p> | |
293 | For all integers <code class="computeroutput"><span class="identifier">n</span> <span class="special"><</span> <span class="identifier">m</span><span class="special">.</span><span class="identifier">size</span><span class="special">()</span></code>, the end of the sequence that | |
294 | matched sub-expression <span class="emphasis"><em>n</em></span>. Alternatively, if | |
295 | sub-expression <span class="emphasis"><em>n</em></span> did not participate in the | |
296 | match, then <code class="computeroutput"><span class="identifier">last</span></code>. | |
297 | </p> | |
298 | </td> | |
299 | </tr> | |
300 | <tr> | |
301 | <td> | |
302 | <p> | |
303 | <code class="computeroutput"><span class="identifier">m</span><span class="special">[</span><span class="identifier">n</span><span class="special">].</span><span class="identifier">matched</span></code> | |
304 | </p> | |
305 | </td> | |
306 | <td> | |
307 | <p> | |
308 | For all integers <code class="computeroutput"><span class="identifier">n</span> <span class="special"><</span> <span class="identifier">m</span><span class="special">.</span><span class="identifier">size</span><span class="special">()</span></code>, true if sub-expression <span class="emphasis"><em>n</em></span> | |
309 | participated in the match, false otherwise. | |
310 | </p> | |
311 | </td> | |
312 | </tr> | |
313 | </tbody> | |
314 | </table></div> | |
315 | <pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">></span> | |
316 | <span class="keyword">bool</span> <span class="identifier">regex_match</span><span class="special">(</span><span class="identifier">BidirectionalIterator</span> <span class="identifier">first</span><span class="special">,</span> <span class="identifier">BidirectionalIterator</span> <span class="identifier">last</span><span class="special">,</span> | |
317 | <span class="keyword">const</span> <span class="identifier">basic_regex</span> <span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">e</span><span class="special">,</span> | |
318 | <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">match_default</span><span class="special">);</span> | |
319 | </pre> | |
320 | <p> | |
321 | <span class="bold"><strong>Effects</strong></span>: Behaves "as if" by constructing | |
322 | an instance of <code class="computeroutput"><span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">></span> <span class="identifier">what</span></code>, | |
323 | and then returning the result of <code class="computeroutput"><span class="identifier">regex_match</span><span class="special">(</span><span class="identifier">first</span><span class="special">,</span> <span class="identifier">last</span><span class="special">,</span> <span class="identifier">what</span><span class="special">,</span> <span class="identifier">e</span><span class="special">,</span> | |
324 | <span class="identifier">flags</span><span class="special">)</span></code>. | |
325 | </p> | |
326 | <pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">></span> | |
327 | <span class="keyword">bool</span> <span class="identifier">regex_match</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">str</span><span class="special">,</span> <span class="identifier">match_results</span><span class="special"><</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m</span><span class="special">,</span> | |
328 | <span class="keyword">const</span> <span class="identifier">basic_regex</span> <span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">e</span><span class="special">,</span> | |
329 | <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">match_default</span><span class="special">);</span> | |
330 | </pre> | |
331 | <p> | |
332 | <span class="bold"><strong>Effects</strong></span>: Returns the result of <code class="computeroutput"><span class="identifier">regex_match</span><span class="special">(</span><span class="identifier">str</span><span class="special">,</span> <span class="identifier">str</span> | |
333 | <span class="special">+</span> <span class="identifier">char_traits</span><span class="special"><</span><span class="identifier">charT</span><span class="special">>::</span><span class="identifier">length</span><span class="special">(</span><span class="identifier">str</span><span class="special">),</span> | |
334 | <span class="identifier">m</span><span class="special">,</span> <span class="identifier">e</span><span class="special">,</span> <span class="identifier">flags</span><span class="special">)</span></code>. | |
335 | </p> | |
336 | <pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">ST</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">SA</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">,</span> | |
337 | <span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">></span> | |
338 | <span class="keyword">bool</span> <span class="identifier">regex_match</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">ST</span><span class="special">,</span> <span class="identifier">SA</span><span class="special">>&</span> <span class="identifier">s</span><span class="special">,</span> | |
339 | <span class="identifier">match_results</span><span class="special"><</span><span class="keyword">typename</span> <span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">ST</span><span class="special">,</span> <span class="identifier">SA</span><span class="special">>::</span><span class="identifier">const_iterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m</span><span class="special">,</span> | |
340 | <span class="keyword">const</span> <span class="identifier">basic_regex</span> <span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">e</span><span class="special">,</span> | |
341 | <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">match_default</span><span class="special">);</span> | |
342 | </pre> | |
343 | <p> | |
344 | <span class="bold"><strong>Effects</strong></span>: Returns the result of <code class="computeroutput"><span class="identifier">regex_match</span><span class="special">(</span><span class="identifier">s</span><span class="special">.</span><span class="identifier">begin</span><span class="special">(),</span> <span class="identifier">s</span><span class="special">.</span><span class="identifier">end</span><span class="special">(),</span> <span class="identifier">m</span><span class="special">,</span> <span class="identifier">e</span><span class="special">,</span> <span class="identifier">flags</span><span class="special">)</span></code>. | |
345 | </p> | |
346 | <pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">></span> | |
347 | <span class="keyword">bool</span> <span class="identifier">regex_match</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">str</span><span class="special">,</span> | |
348 | <span class="keyword">const</span> <span class="identifier">basic_regex</span> <span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">e</span><span class="special">,</span> | |
349 | <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">match_default</span><span class="special">);</span> | |
350 | </pre> | |
351 | <p> | |
352 | <span class="bold"><strong>Effects</strong></span>: Returns the result of <code class="computeroutput"><span class="identifier">regex_match</span><span class="special">(</span><span class="identifier">str</span><span class="special">,</span> <span class="identifier">str</span> | |
353 | <span class="special">+</span> <span class="identifier">char_traits</span><span class="special"><</span><span class="identifier">charT</span><span class="special">>::</span><span class="identifier">length</span><span class="special">(</span><span class="identifier">str</span><span class="special">),</span> | |
354 | <span class="identifier">e</span><span class="special">,</span> <span class="identifier">flags</span><span class="special">)</span></code>. | |
355 | </p> | |
356 | <pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">ST</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">SA</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">></span> | |
357 | <span class="keyword">bool</span> <span class="identifier">regex_match</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">ST</span><span class="special">,</span> <span class="identifier">SA</span><span class="special">>&</span> <span class="identifier">s</span><span class="special">,</span> | |
358 | <span class="keyword">const</span> <span class="identifier">basic_regex</span> <span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">e</span><span class="special">,</span> | |
359 | <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">match_default</span><span class="special">);</span> | |
360 | </pre> | |
361 | <p> | |
362 | <span class="bold"><strong>Effects</strong></span>: Returns the result of <code class="computeroutput"><span class="identifier">regex_match</span><span class="special">(</span><span class="identifier">s</span><span class="special">.</span><span class="identifier">begin</span><span class="special">(),</span> <span class="identifier">s</span><span class="special">.</span><span class="identifier">end</span><span class="special">(),</span> <span class="identifier">e</span><span class="special">,</span> <span class="identifier">flags</span><span class="special">)</span></code>. | |
363 | </p> | |
364 | <h5> | |
365 | <a name="boost_regex.ref.regex_match.h1"></a> | |
366 | <span class="phrase"><a name="boost_regex.ref.regex_match.examples"></a></span><a class="link" href="regex_match.html#boost_regex.ref.regex_match.examples">Examples</a> | |
367 | </h5> | |
368 | <p> | |
369 | The following example processes an ftp response: | |
370 | </p> | |
371 | <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">stdlib</span><span class="special">.</span><span class="identifier">h</span><span class="special">></span> | |
372 | <span class="preprocessor">#include</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">hpp</span><span class="special">></span> | |
373 | <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">string</span><span class="special">></span> | |
374 | <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> | |
375 | ||
376 | <span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">;</span> | |
377 | ||
378 | <span class="identifier">regex</span> <span class="identifier">expression</span><span class="special">(</span><span class="string">"([0-9]+)(\\-| |$)(.*)"</span><span class="special">);</span> | |
379 | ||
380 | <span class="comment">// process_ftp: </span> | |
381 | <span class="comment">// on success returns the ftp response code, and fills </span> | |
382 | <span class="comment">// msg with the ftp response message. </span> | |
383 | <span class="keyword">int</span> <span class="identifier">process_ftp</span><span class="special">(</span><span class="keyword">const</span> <span class="keyword">char</span><span class="special">*</span> <span class="identifier">response</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">*</span> <span class="identifier">msg</span><span class="special">)</span> | |
384 | <span class="special">{</span> | |
385 | <span class="identifier">cmatch</span> <span class="identifier">what</span><span class="special">;</span> | |
386 | <span class="keyword">if</span><span class="special">(</span><span class="identifier">regex_match</span><span class="special">(</span><span class="identifier">response</span><span class="special">,</span> <span class="identifier">what</span><span class="special">,</span> <span class="identifier">expression</span><span class="special">))</span> | |
387 | <span class="special">{</span> | |
388 | <span class="comment">// what[0] contains the whole string </span> | |
389 | <span class="comment">// what[1] contains the response code </span> | |
390 | <span class="comment">// what[2] contains the separator character </span> | |
391 | <span class="comment">// what[3] contains the text message. </span> | |
392 | <span class="keyword">if</span><span class="special">(</span><span class="identifier">msg</span><span class="special">)</span> | |
393 | <span class="identifier">msg</span><span class="special">-></span><span class="identifier">assign</span><span class="special">(</span><span class="identifier">what</span><span class="special">[</span><span class="number">3</span><span class="special">].</span><span class="identifier">first</span><span class="special">,</span> <span class="identifier">what</span><span class="special">[</span><span class="number">3</span><span class="special">].</span><span class="identifier">second</span><span class="special">);</span> | |
394 | <span class="keyword">return</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">atoi</span><span class="special">(</span><span class="identifier">what</span><span class="special">[</span><span class="number">1</span><span class="special">].</span><span class="identifier">first</span><span class="special">);</span> | |
395 | <span class="special">}</span> | |
396 | <span class="comment">// failure did not match </span> | |
397 | <span class="keyword">if</span><span class="special">(</span><span class="identifier">msg</span><span class="special">)</span> | |
398 | <span class="identifier">msg</span><span class="special">-></span><span class="identifier">erase</span><span class="special">();</span> | |
399 | <span class="keyword">return</span> <span class="special">-</span><span class="number">1</span><span class="special">;</span> | |
400 | <span class="special">}</span> | |
401 | </pre> | |
402 | </div> | |
403 | <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> | |
404 | <td align="left"></td> | |
405 | <td align="right"><div class="copyright-footer">Copyright © 1998-2013 John Maddock<p> | |
406 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
407 | file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) | |
408 | </p> | |
409 | </div></td> | |
410 | </tr></table> | |
411 | <hr> | |
412 | <div class="spirit-nav"> | |
413 | <a accesskey="p" href="sub_match.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../ref.html"><img src="../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="regex_search.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> | |
414 | </div> | |
415 | </body> | |
416 | </html> |