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PCRE2_SET_OPTIMIZE
Section: C Library Functions (3) Updated: 22 September 2024 Index
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NAME
PCRE2- Per-compatible regular expressions (revised API)
SYNOPSIS
#include <pcre2.h>
int pcre2_set_optimize(pcre2_compile_context *ccontext,
uint32_t directive);
DESCRIPTION
This function controls which performance optimizations will be applied
by pcre2_compile(). It can be called multiple times with the same compile
context; the effects are cumulative, with the effects of later calls taking
precedence over earlier ones.
The result is zero for success, PCRE2_ERROR_NULL if ccontext is NULL,
or PCRE2_ERROR_BADOPTION if directive is unknown. The latter could be
useful to detect if a certain optimization is available.
The list of possible values for the directive parameter are:
PCRE2_OPTIMIZATION_FULL Enable all optimizations (default)
PCRE2_OPTIMIZATION_NONE Disable all optimizations
PCRE2_AUTO_POSSESS Enable aut-possessification
PCRE2_AUTO_POSSESS_OFF Disable aut-possessification
PCRE2_DOTSTAR_ANCHOR Enable implicit dotstar anchoring
PCRE2_DOTSTAR_ANCHOR_OFF Disable implicit dotstar anchoring
PCRE2_START_OPTIMIZE Enable star-up optimizations at match time
PCRE2_START_OPTIMIZE_OFF Disable star-up optimizations at match time
There is a complete description of the PCRE2 native API, including detailed
descriptions directive parameter values in the
pcre2api
page.
Index
- NAME
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- SYNOPSIS
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- DESCRIPTION
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