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<title>pcre_fullinfo specification</title>
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<h1>pcre_fullinfo man page</h1>
<p>
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<p>
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<br>
<br><b>
SYNOPSIS
</b><br>
<P>
<b>#include <pcre.h></b>
</P>
<P>
<b>int pcre_fullinfo(const pcre *<i>code</i>, const pcre_extra *<i>extra</i>,</b>
<b>int <i>what</i>, void *<i>where</i>);</b>
</P>
<P>
<b>int pcre16_fullinfo(const pcre16 *<i>code</i>, const pcre16_extra *<i>extra</i>,</b>
<b>int <i>what</i>, void *<i>where</i>);</b>
</P>
<P>
<b>int pcre32_fullinfo(const pcre32 *<i>code</i>, const pcre32_extra *<i>extra</i>,</b>
<b>int <i>what</i>, void *<i>where</i>);</b>
</P>
<br><b>
DESCRIPTION
</b><br>
<P>
This function returns information about a compiled pattern. Its arguments are:
<pre>
<i>code</i> Compiled regular expression
<i>extra</i> Result of <b>pcre[16|32]_study()</b> or NULL
<i>what</i> What information is required
<i>where</i> Where to put the information
</pre>
The following information is available:
<pre>
PCRE_INFO_BACKREFMAX Number of highest back reference
PCRE_INFO_CAPTURECOUNT Number of capturing subpatterns
PCRE_INFO_DEFAULT_TABLES Pointer to default tables
PCRE_INFO_FIRSTBYTE Fixed first data unit for a match, or
-1 for start of string
or after newline, or
-2 otherwise
PCRE_INFO_FIRSTTABLE Table of first data units (after studying)
PCRE_INFO_HASCRORLF Return 1 if explicit CR or LF matches exist
PCRE_INFO_JCHANGED Return 1 if (?J) or (?-J) was used
PCRE_INFO_JIT Return 1 after successful JIT compilation
PCRE_INFO_JITSIZE Size of JIT compiled code
PCRE_INFO_LASTLITERAL Literal last data unit required
PCRE_INFO_MINLENGTH Lower bound length of matching strings
PCRE_INFO_NAMECOUNT Number of named subpatterns
PCRE_INFO_NAMEENTRYSIZE Size of name table entry
PCRE_INFO_NAMETABLE Pointer to name table
PCRE_INFO_OKPARTIAL Return 1 if partial matching can be tried
(always returns 1 after release 8.00)
PCRE_INFO_OPTIONS Option bits used for compilation
PCRE_INFO_SIZE Size of compiled pattern
PCRE_INFO_STUDYSIZE Size of study data
PCRE_INFO_FIRSTCHARACTER Fixed first data unit for a match
PCRE_INFO_FIRSTCHARACTERFLAGS Returns
1 if there is a first data character set, which can
then be retrieved using PCRE_INFO_FIRSTCHARACTER,
2 if the first character is at the start of the data
string or after a newline, and
0 otherwise
PCRE_INFO_REQUIREDCHAR Literal last data unit required
PCRE_INFO_REQUIREDCHARFLAGS Returns 1 if the last data character is set (which can then
be retrieved using PCRE_INFO_REQUIREDCHAR); 0 otherwise
</pre>
The <i>where</i> argument must point to an integer variable, except for the
following <i>what</i> values:
<pre>
PCRE_INFO_DEFAULT_TABLES const unsigned char *
PCRE_INFO_FIRSTTABLE const unsigned char *
PCRE_INFO_NAMETABLE PCRE_SPTR16 (16-bit library)
PCRE_INFO_NAMETABLE PCRE_SPTR32 (32-bit library)
PCRE_INFO_NAMETABLE const unsigned char * (8-bit library)
PCRE_INFO_OPTIONS unsigned long int
PCRE_INFO_SIZE size_t
PCRE_INFO_FIRSTCHARACTER uint32_t
PCRE_INFO_REQUIREDCHAR uint32_t
</pre>
The yield of the function is zero on success or:
<pre>
PCRE_ERROR_NULL the argument <i>code</i> was NULL
the argument <i>where</i> was NULL
PCRE_ERROR_BADMAGIC the "magic number" was not found
PCRE_ERROR_BADOPTION the value of <i>what</i> was invalid
</PRE>
</P>
<P>
There is a complete description of the PCRE native API in the
<a href="pcreapi.html"><b>pcreapi</b></a>
page and a description of the POSIX API in the
<a href="pcreposix.html"><b>pcreposix</b></a>
page.
<p>
Return to the <a href="index.html">PCRE index page</a>.
</p>
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