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.TH PCRE_CONFIG 3 "20 April 2014" "PCRE 8.36"
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.SH NAME
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PCRE - Perl-compatible regular expressions
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.SH SYNOPSIS
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.rs
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.sp
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.B #include <pcre.h>
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.PP
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.SM
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.B int pcre_config(int \fIwhat\fP, void *\fIwhere\fP);
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.PP
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.B int pcre16_config(int \fIwhat\fP, void *\fIwhere\fP);
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.PP
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.B int pcre32_config(int \fIwhat\fP, void *\fIwhere\fP);
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.
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.SH DESCRIPTION
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.rs
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.sp
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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 PCRE library it is using. The
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arguments are as follows:
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.sp
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\fIwhat\fP A code specifying what information is required
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\fIwhere\fP Points to where to put the data
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.sp
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The \fIwhere\fP argument must point to an integer variable, except for
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PCRE_CONFIG_MATCH_LIMIT, PCRE_CONFIG_MATCH_LIMIT_RECURSION, and
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PCRE_CONFIG_PARENS_LIMIT, when it must point to an unsigned long integer,
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and for PCRE_CONFIG_JITTARGET, when it must point to a const char*.
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The available codes are:
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.sp
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PCRE_CONFIG_JIT Availability of just-in-time compiler
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support (1=yes 0=no)
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PCRE_CONFIG_JITTARGET String containing information about the
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target architecture for the JIT compiler,
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or NULL if there is no JIT support
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PCRE_CONFIG_LINK_SIZE Internal link size: 2, 3, or 4
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PCRE_CONFIG_PARENS_LIMIT Parentheses nesting limit
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PCRE_CONFIG_MATCH_LIMIT Internal resource limit
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PCRE_CONFIG_MATCH_LIMIT_RECURSION
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Internal recursion depth limit
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PCRE_CONFIG_NEWLINE Value of the default newline sequence:
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13 (0x000d) for CR
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10 (0x000a) for LF
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3338 (0x0d0a) for CRLF
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-2 for ANYCRLF
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-1 for ANY
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PCRE_CONFIG_BSR Indicates what \eR 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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PCRE_CONFIG_POSIX_MALLOC_THRESHOLD
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Threshold of return slots, above which
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\fBmalloc()\fP is used by the POSIX API
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PCRE_CONFIG_STACKRECURSE Recursion implementation (1=stack 0=heap)
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PCRE_CONFIG_UTF16 Availability of UTF-16 support (1=yes
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0=no); option for \fBpcre16_config()\fP
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PCRE_CONFIG_UTF32 Availability of UTF-32 support (1=yes
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0=no); option for \fBpcre32_config()\fP
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PCRE_CONFIG_UTF8 Availability of UTF-8 support (1=yes 0=no);
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option for \fBpcre_config()\fP
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PCRE_CONFIG_UNICODE_PROPERTIES
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Availability of Unicode property support
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(1=yes 0=no)
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.sp
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The function yields 0 on success or PCRE_ERROR_BADOPTION otherwise. That error
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is also given if PCRE_CONFIG_UTF16 or PCRE_CONFIG_UTF32 is passed to
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\fBpcre_config()\fP, if PCRE_CONFIG_UTF8 or PCRE_CONFIG_UTF32 is passed to
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\fBpcre16_config()\fP, or if PCRE_CONFIG_UTF8 or PCRE_CONFIG_UTF16 is passed to
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\fBpcre32_config()\fP.
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.P
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There is a complete description of the PCRE native API in the
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.\" HREF
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\fBpcreapi\fP
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.\"
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page and a description of the POSIX API in the
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.\" HREF
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\fBpcreposix\fP
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.\"
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page.
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