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