2014-10-21 12:33:30 -04:00
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<title>pcre2_config specification</title>
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</head>
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<body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
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<h1>pcre2_config man page</h1>
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<p>
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Return to the <a href="index.html">PCRE2 index page</a>.
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</p>
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<p>
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This page is part of the PCRE2 HTML documentation. It was generated
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automatically from the original man page. If there is any nonsense in it,
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please consult the man page, in case the conversion went wrong.
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<br>
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<br><b>
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SYNOPSIS
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</b><br>
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<P>
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<b>#include <pcre2.h></b>
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</P>
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<P>
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<b>int pcre2_config(uint32_t <i>what</i>, void *<i>where</i>);</b>
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</P>
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<br><b>
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DESCRIPTION
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</b><br>
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<P>
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This function makes it possible for a client program to find out which optional
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features are available in the version of the PCRE2 library it is using. The
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arguments are as follows:
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<pre>
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<i>what</i> A code specifying what information is required
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<i>where</i> Points to where to put the information
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</pre>
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If <i>where</i> is NULL, the function returns the amount of memory needed for
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the requested information. When the information is a string, the value is in
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code units; for other types of data it is in bytes.
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</P>
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<P>
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If <b>where</b> is not NULL, for PCRE2_CONFIG_JITTARGET,
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PCRE2_CONFIG_UNICODE_VERSION, and PCRE2_CONFIG_VERSION it must point to a
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buffer that is large enough to hold the string. For PCRE2_CONFIG_MATCHLIMIT,
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PCRE2_CONFIG_PARENSLIMIT, and PCRE2_CONFIG_RECURSIONLIMIT it must point to an
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unsigned long int variable, and for all other codes to an int variable. The
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available codes are:
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<pre>
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PCRE2_CONFIG_BSR Indicates what \R matches by default:
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0 all Unicode line endings
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1 CR, LF, or CRLF only
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PCRE2_CONFIG_JIT Availability of just-in-time compiler
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support (1=yes 0=no)
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PCRE2_CONFIG_JITTARGET Information about the target archi-
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tecture for the JIT compiler
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PCRE2_CONFIG_LINKSIZE Configured internal link size (2, 3, 4)
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PCRE2_CONFIG_MATCHLIMIT Default internal resource limit
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PCRE2_CONFIG_NEWLINE Code for the default newline sequence:
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1 for CR
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2 for LF
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3 for CRLF
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4 for ANY
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5 for ANYCRLF
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PCRE2_CONFIG_PARENSLIMIT Default parentheses nesting limit
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PCRE2_CONFIG_RECURSIONLIMIT Internal recursion depth limit
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PCRE2_CONFIG_STACKRECURSE Recursion implementation (1=stack
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0=heap)
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PCRE2_CONFIG_UNICODE Availability of Unicode support (1=yes
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0=no)
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PCRE2_CONFIG_UNICODE_VERSION The Unicode version (a string)
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PCRE2_CONFIG_VERSION The PCRE2 version (a string)
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</pre>
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The function yields a non-negative value on success or the negative value
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PCRE2_ERROR_BADOPTION otherwise. This is also the result for the
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2014-11-11 11:51:07 -05:00
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PCRE2_CONFIG_JITTARGET code if JIT support is not available. When a string is
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requested, the function returns the number of code units used, including the
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2014-10-21 12:33:30 -04:00
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terminating zero.
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</P>
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<P>
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There is a complete description of the PCRE2 native API in the
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<a href="pcre2api.html"><b>pcre2api</b></a>
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page and a description of the POSIX API in the
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<a href="pcre2posix.html"><b>pcre2posix</b></a>
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page.
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<p>
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Return to the <a href="index.html">PCRE2 index page</a>.
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</p>
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