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<h1>Module <a href="type_Netstring_pcre.html">Netstring_pcre</a></h1>
<pre><span id="MODULENetstring_pcre"><span class="keyword">module</span> Netstring_pcre</span>: <code class="code">sig</code> <a href="Netstring_pcre.html">..</a> <code class="code">end</code></pre><div class="info module top">
<div class="info-desc">
<p>Wrapper for regexps with PCRE syntax</p>
<p>This module is a version of <code class="code">Str</code> with a thread-safe interface,
implemented using Pcre.</p>
<p>This modules processes PCRE-style regular expressions. If you like
to write <code class="code">Str</code>-like regexps, you can also use <a href="Netstring_str.html"><code class="code">Netstring_str</code></a> with
almost the same signature.</p>
<p><b>The functions in this module are unavailable if Ocamlnet is built
with <code class="code">Str</code> as implementation of regular expressions! They will always
raise <code class="code">Invalid_argument</code>!</b></p>
</div>
</div>
<hr width="100%">
<p>Supported regexp syntax: See pcrepattern(3).</p>
<pre><span id="TYPEregexp"><span class="keyword">type</span> <code class="type"></code>regexp</span> = <code class="type">Pcre.regexp</code> </pre>
<div class="info ">
<div class="info-desc">
<p>The type of regular expressions; now based on <code class="code">Pcre</code></p>
</div>
</div>
<pre><span id="TYPEsplit_result"><span class="keyword">type</span> <code class="type"></code>split_result</span> = <code class="type">Pcre.split_result</code> = </pre><table class="typetable">
<tr>
<td align="left" valign="top" >
<code><span class="keyword">|</span></code></td>
<td align="left" valign="top" >
<code><span id="TYPEELTsplit_result.Text"><span class="constructor">Text</span></span> <span class="keyword">of</span> <code class="type">string</code></code></td>
</tr>
<tr>
<td align="left" valign="top" >
<code><span class="keyword">|</span></code></td>
<td align="left" valign="top" >
<code><span id="TYPEELTsplit_result.Delim"><span class="constructor">Delim</span></span> <span class="keyword">of</span> <code class="type">string</code></code></td>
</tr>
<tr>
<td align="left" valign="top" >
<code><span class="keyword">|</span></code></td>
<td align="left" valign="top" >
<code><span id="TYPEELTsplit_result.Group"><span class="constructor">Group</span></span> <span class="keyword">of</span> <code class="type">int * string</code></code></td>
</tr>
<tr>
<td align="left" valign="top" >
<code><span class="keyword">|</span></code></td>
<td align="left" valign="top" >
<code><span id="TYPEELTsplit_result.NoGroup"><span class="constructor">NoGroup</span></span></code></td>
<td class="typefieldcomment" align="left" valign="top" ><code>(*</code></td><td class="typefieldcomment" align="left" valign="top" ><div class="info ">
<div class="info-desc">
<p>Here we keep compatiblity with <code class="code">Pcre</code></p>
</div>
</div>
</td><td class="typefieldcomment" align="left" valign="bottom" ><code>*)</code></td>
</tr></table>
<pre><span id="TYPEresult"><span class="keyword">type</span> <code class="type"></code>result</span> </pre>
<div class="info ">
<div class="info-desc">
<p>The type of matching results</p>
</div>
</div>
<pre><span id="VALregexp"><span class="keyword">val</span> regexp</span> : <code class="type">string -> <a href="Netstring_pcre.html#TYPEregexp">regexp</a></code></pre><div class="info ">
<div class="info-desc">
<p>Parses a regexp</p>
</div>
</div>
<pre><span id="VALregexp_case_fold"><span class="keyword">val</span> regexp_case_fold</span> : <code class="type">string -> <a href="Netstring_pcre.html#TYPEregexp">regexp</a></code></pre><div class="info ">
<div class="info-desc">
<p>Parses a case-insensitive regexp</p>
</div>
</div>
<pre><span id="VALquote"><span class="keyword">val</span> quote</span> : <code class="type">string -> string</code></pre><div class="info ">
<div class="info-desc">
<p>Quotes a string such that it can be included in a regexp</p>
</div>
</div>
<pre><span id="VALregexp_string"><span class="keyword">val</span> regexp_string</span> : <code class="type">string -> <a href="Netstring_pcre.html#TYPEregexp">regexp</a></code></pre><div class="info ">
<div class="info-desc">
<p>Returns a regexp that matches exactly the string</p>
</div>
</div>
<pre><span id="VALregexp_string_case_fold"><span class="keyword">val</span> regexp_string_case_fold</span> : <code class="type">string -> <a href="Netstring_pcre.html#TYPEregexp">regexp</a></code></pre><div class="info ">
<div class="info-desc">
<p>Returns a case-insensitive regexp that matches exactly the string</p>
</div>
</div>
<pre><span id="VALstring_match"><span class="keyword">val</span> string_match</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -> string -> int -> <a href="Netstring_pcre.html#TYPEresult">result</a> option</code></pre><div class="info ">
<div class="info-desc">
<p>Matches the string at the position with the regexp. Returns
<code class="code">None</code> if no match is found. Returns <code class="code">Some r</code> on success,
and <code class="code">r</code> describes the match.</p>
</div>
</div>
<pre><span id="VALbytes_match"><span class="keyword">val</span> bytes_match</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -><br> Stdlib.Bytes.t -> int -> <a href="Netstring_pcre.html#TYPEresult">result</a> option</code></pre><div class="info ">
<div class="info-desc">
<p>Same for bytes</p>
</div>
</div>
<pre><span id="VALsearch_forward"><span class="keyword">val</span> search_forward</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -> string -> int -> int * <a href="Netstring_pcre.html#TYPEresult">result</a></code></pre><div class="info ">
<div class="info-desc">
<p>Searches a match of the string with the regexp, starting at
the position and in forward direction.
Raises <code class="code">Not_found</code> if no match could be found.
Returns <code class="code">(p,r)</code> when a match at position <code class="code">p</code> is found,
described by <code class="code">r</code>.</p>
</div>
</div>
<pre><span id="VALsearch_forward_bytes"><span class="keyword">val</span> search_forward_bytes</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -> Stdlib.Bytes.t -> int -> int * <a href="Netstring_pcre.html#TYPEresult">result</a></code></pre><div class="info ">
<div class="info-desc">
<p>Same for bytes</p>
</div>
</div>
<pre><span id="VALsearch_backward"><span class="keyword">val</span> search_backward</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -> string -> int -> int * <a href="Netstring_pcre.html#TYPEresult">result</a></code></pre><div class="info ">
<div class="info-desc">
<p>Searches a match of the string with the regexp, starting at
the position and in backward direction.
Raises <code class="code">Not_found</code> if no match could be found.
Returns <code class="code">(p,r)</code> when a match at position <code class="code">p</code> is found,
described by <code class="code">r</code>.</p>
</div>
</div>
<pre><span id="VALsearch_backward_bytes"><span class="keyword">val</span> search_backward_bytes</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -> Stdlib.Bytes.t -> int -> int * <a href="Netstring_pcre.html#TYPEresult">result</a></code></pre><div class="info ">
<div class="info-desc">
<p>Same for bytes</p>
</div>
</div>
<pre><span id="VALmatched_string"><span class="keyword">val</span> matched_string</span> : <code class="type"><a href="Netstring_pcre.html#TYPEresult">result</a> -> string -> string</code></pre><div class="info ">
<div class="info-desc">
<p>Extracts the matched part from the string. The string argument
must be the same string passed to <code class="code">string_match</code> or the search
functions, and the result argument must be the corresponding
result.</p>
</div>
</div>
<pre><span id="VALmatched_bytes"><span class="keyword">val</span> matched_bytes</span> : <code class="type"><a href="Netstring_pcre.html#TYPEresult">result</a> -> Stdlib.Bytes.t -> Stdlib.Bytes.t</code></pre><div class="info ">
<div class="info-desc">
<p>Same for bytes</p>
</div>
</div>
<pre><span id="VALmatch_beginning"><span class="keyword">val</span> match_beginning</span> : <code class="type"><a href="Netstring_pcre.html#TYPEresult">result</a> -> int</code></pre><div class="info ">
<div class="info-desc">
<p>Returns the position where the matched part begins</p>
</div>
</div>
<pre><span id="VALmatch_end"><span class="keyword">val</span> match_end</span> : <code class="type"><a href="Netstring_pcre.html#TYPEresult">result</a> -> int</code></pre><div class="info ">
<div class="info-desc">
<p>Returns the position where the matched part ends</p>
</div>
</div>
<pre><span id="VALmatched_group"><span class="keyword">val</span> matched_group</span> : <code class="type"><a href="Netstring_pcre.html#TYPEresult">result</a> -> int -> string -> string</code></pre><div class="info ">
<div class="info-desc">
<p>Extracts the substring the nth group matches from the whole
string. The string argument
must be the same string passed to <code class="code">string_match</code> or the search
functions, and the result argument must be the corresponding
result.</p>
</div>
</div>
<pre><span id="VALmatched_group_bytes"><span class="keyword">val</span> matched_group_bytes</span> : <code class="type"><a href="Netstring_pcre.html#TYPEresult">result</a> -> int -> Stdlib.Bytes.t -> Stdlib.Bytes.t</code></pre><div class="info ">
<div class="info-desc">
<p>Same for bytes</p>
</div>
</div>
<pre><span id="VALgroup_beginning"><span class="keyword">val</span> group_beginning</span> : <code class="type"><a href="Netstring_pcre.html#TYPEresult">result</a> -> int -> int</code></pre><div class="info ">
<div class="info-desc">
<p>Returns the position where the substring matching the nth
group begins</p>
</div>
</div>
<pre><span id="VALgroup_end"><span class="keyword">val</span> group_end</span> : <code class="type"><a href="Netstring_pcre.html#TYPEresult">result</a> -> int -> int</code></pre><div class="info ">
<div class="info-desc">
<p>Returns the position where the substring matching the nth
group ends</p>
</div>
</div>
<pre><span id="VALglobal_replace"><span class="keyword">val</span> global_replace</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -> string -> string -> string</code></pre><div class="info ">
<div class="info-desc">
<p><code class="code">global_replace re templ s</code>: Replaces all matchings of <code class="code">re</code> in
<code class="code">s</code> by <code class="code">templ</code>.</p>
<p>In <code class="code">templ</code> one can refer to matched groups by the backslash notation:
<code class="code">\1</code> refers to the first group, <code class="code">\2</code> to the second etc.
<code class="code">\0</code> is the whole match. <code class="code">\\ </code> is the backslash character.</p>
</div>
</div>
<pre><span id="VALreplace_first"><span class="keyword">val</span> replace_first</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -> string -> string -> string</code></pre><div class="info ">
<div class="info-desc">
<p><code class="code">replace_first re templ s</code>: Replaces the first match of <code class="code">re</code> in
<code class="code">s</code> by <code class="code">templ</code>.</p>
<p>In <code class="code">templ</code> one can refer to matched groups by the backslash notation:
<code class="code">\1</code> refers to the first group, <code class="code">\2</code> to the second etc.
<code class="code">\0</code> is the whole match. <code class="code">\\ </code> is the backslash character.</p>
</div>
</div>
<pre><span id="VALglobal_substitute"><span class="keyword">val</span> global_substitute</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -><br> (<a href="Netstring_pcre.html#TYPEresult">result</a> -> string -> string) -> string -> string</code></pre><div class="info ">
<div class="info-desc">
<p><code class="code">global_substitute re subst s</code>: Applies the substitution function
<code class="code">subst</code> to all matchings of <code class="code">re</code> in <code class="code">s</code>, and returns the
transformed string. <code class="code">subst</code> is called with the current <code class="code">result</code>
of the match and the whole string <code class="code">s</code>.</p>
</div>
</div>
<pre><span id="VALsubstitute_first"><span class="keyword">val</span> substitute_first</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -><br> (<a href="Netstring_pcre.html#TYPEresult">result</a> -> string -> string) -> string -> string</code></pre><div class="info ">
<div class="info-desc">
<p><code class="code">substitute_first re subst s</code>: Applies the substitution function
<code class="code">subst</code> to the first matching of <code class="code">re</code> in <code class="code">s</code>, and returns the
transformed string. <code class="code">subst</code> is called with the current <code class="code">result</code>
of the match and the whole string <code class="code">s</code>.</p>
</div>
</div>
<pre><span id="VALsplit"><span class="keyword">val</span> split</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -> string -> string list</code></pre><div class="info ">
<div class="info-desc">
<p>Splits the string according to the regexp in substrings.
Occurrences of the delimiter at the beginning and the end
are ignored.</p>
</div>
</div>
<pre><span id="VALbounded_split"><span class="keyword">val</span> bounded_split</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -> string -> int -> string list</code></pre><div class="info ">
<div class="info-desc">
<p>Splits into at most <code class="code">n</code> substrings, based on <code class="code">split</code></p>
</div>
</div>
<pre><span id="VALsplit_delim"><span class="keyword">val</span> split_delim</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -> string -> string list</code></pre><div class="info ">
<div class="info-desc">
<p>Same as <code class="code">split</code>, but occurrences of the delimiter at the beginning
and the end are returned as empty strings</p>
</div>
</div>
<pre><span id="VALbounded_split_delim"><span class="keyword">val</span> bounded_split_delim</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -> string -> int -> string list</code></pre><div class="info ">
<div class="info-desc">
<p>Splits into at most <code class="code">n</code> substrings, based on <code class="code">split_delim</code></p>
</div>
</div>
<pre><span id="VALfull_split"><span class="keyword">val</span> full_split</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -> string -> <a href="Netstring_pcre.html#TYPEsplit_result">split_result</a> list</code></pre><div class="info ">
<div class="info-desc">
<p>Like <code class="code">split_delim</code>, but returns the delimiters in the result</p>
</div>
</div>
<pre><span id="VALbounded_full_split"><span class="keyword">val</span> bounded_full_split</span> : <code class="type"><a href="Netstring_pcre.html#TYPEregexp">regexp</a> -> string -> int -> <a href="Netstring_pcre.html#TYPEsplit_result">split_result</a> list</code></pre><div class="info ">
<div class="info-desc">
<p>Splits into at most <code class="code">n</code> substrings, based on <code class="code">full_split</code></p>
</div>
</div>
<pre><span id="VALstring_before"><span class="keyword">val</span> string_before</span> : <code class="type">string -> int -> string</code></pre><div class="info ">
<div class="info-desc">
<p>The first <code class="code">n</code> characters of a string</p>
</div>
</div>
<pre><span id="VALstring_after"><span class="keyword">val</span> string_after</span> : <code class="type">string -> int -> string</code></pre><div class="info ">
<div class="info-desc">
<p>The last <code class="code">n</code> characters of a string</p>
</div>
</div>
<pre><span id="VALfirst_chars"><span class="keyword">val</span> first_chars</span> : <code class="type">string -> int -> string</code></pre><div class="info ">
<div class="info-desc">
<p>Same as <code class="code">string_before</code></p>
</div>
</div>
<pre><span id="VALlast_chars"><span class="keyword">val</span> last_chars</span> : <code class="type">string -> int -> string</code></pre><div class="info ">
<div class="info-desc">
<p>Same as <code class="code">string_after</code></p>
</div>
</div>
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