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April, 26th. 2006:
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PCRE2_COMPILE
Section: C Library Functions (3) Updated: 23 March 2017 Index
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NAME
PCRE2- Per-compatible regular expressions (revised API)
SYNOPSIS
#include <pcre2.h>
int pcre2_callout_enumerate(const pcre2_code *code,
int (*callback)(pcre2_callout_enumerate_block *, void *),
void *callout_data);
DESCRIPTION
This function scans a compiled regular expression and calls the callback()
function for each callout within the pattern. The yield of the function is zero
for success and no-zero otherwise. The arguments are:
code Points to the compiled pattern
callback The callback function
callout_data User data that is passed to the callback
The callback() function is passed a pointer to a data block containing
the following fields (not necessarily in this order):
uint32_t version Block version number
uint32_t callout_number Number for numbered callouts
PCRE2_SIZE pattern_position Offset to next item in pattern
PCRE2_SIZE next_item_length Length of next item in pattern
PCRE2_SIZE callout_string_offset Offset to string within pattern
PCRE2_SIZE callout_string_length Length of callout string
PCRE2_SPTR callout_string Points to callout string or is NULL
The second argument passed to the callback() function is the callout data
that was passed to pcre2_callout_enumerate(). The callback()
function must return zero for success. Any other value causes the pattern scan
to stop, with the value being passed back as the result of
pcre2_callout_enumerate().
There is a complete description of the PCRE2 native API in the
pcre2api
page and a description of the POSIX API in the
pcre2posix
page.
Index
- NAME
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- SYNOPSIS
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- DESCRIPTION
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