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<title>pcre2_pattern_convert specification</title>
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<h1>pcre2_pattern_convert man page</h1>
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<br><b>
SYNOPSIS
</b><br>
<P>
<b>#include &#60;pcre2.h&#62;</b>
</P>
<P>
<b>int pcre2_pattern_convert(PCRE2_SPTR <i>pattern</i>, PCRE2_SIZE <i>length</i>,</b>
<b>  uint32_t <i>options</i>, PCRE2_UCHAR **<i>buffer</i>,</b>
<b>  PCRE2_SIZE *<i>blength</i>, pcre2_convert_context *<i>cvcontext</i>);</b>
</P>
<br><b>
DESCRIPTION
</b><br>
<P>
This function is part of an experimental set of pattern conversion functions.
It converts a foreign pattern (for example, a glob) into a PCRE2 regular
expression pattern. Its arguments are:
<pre>
  <i>pattern</i>     The foreign pattern
  <i>length</i>      The length of the input pattern or PCRE2_ZERO_TERMINATED
  <i>options</i>     Option bits
  <i>buffer</i>      Pointer to pointer to output buffer, or NULL
  <i>blength</i>     Pointer to output length field
  <i>cvcontext</i>   Pointer to a convert context or NULL
</pre>
The length of the converted pattern (excluding the terminating zero) is
returned via <i>blength</i>. If <i>buffer</i> is NULL, the function just returns
the output length. If <i>buffer</i> points to a NULL pointer, heap memory is
obtained for the converted pattern, using the allocator in the context if
present (or else <b>malloc()</b>), and the field pointed to by <i>buffer</i> is
updated. If <i>buffer</i> points to a non-NULL field, that must point to a
buffer whose size is in the variable pointed to by <i>blength</i>. This value is
updated.
</P>
<P>
The option bits are:
<pre>
  PCRE2_CONVERT_UTF                     Input is UTF
  PCRE2_CONVERT_NO_UTF_CHECK            Do not check UTF validity
  PCRE2_CONVERT_POSIX_BASIC             Convert POSIX basic pattern
  PCRE2_CONVERT_POSIX_EXTENDED          Convert POSIX extended pattern
  PCRE2_CONVERT_GLOB                    ) Convert
  PCRE2_CONVERT_GLOB_NO_WILD_SEPARATOR  )   various types
  PCRE2_CONVERT_GLOB_NO_STARSTAR        )     of glob
</pre>
The return value from <b>pcre2_pattern_convert()</b> is zero on success or a
non-zero PCRE2 error code.
</P>
<P>
The pattern conversion functions are described in the
<a href="pcre2convert.html"><b>pcre2convert</b></a>
documentation.
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