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37 lines
1002 B
Plaintext
37 lines
1002 B
Plaintext
.TH PCRE2_SUBSTRING_LENGTH_BYNUMBER 3 "22 December 2014" "PCRE2 10.45"
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.SH NAME
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PCRE2 - Perl-compatible regular expressions (revised API)
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.SH SYNOPSIS
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.rs
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.sp
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.B #include <pcre2.h>
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.PP
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.nf
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.B int pcre2_substring_length_bynumber(pcre2_match_data *\fImatch_data\fP,
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.B " uint32_t \fInumber\fP, PCRE2_SIZE *\fIlength\fP);"
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.fi
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.
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.SH DESCRIPTION
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.rs
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.sp
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This function returns the length of a matched substring, identified by number.
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The arguments are:
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.sp
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\fImatch_data\fP The match data block for the match
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\fInumber\fP The substring number
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\fIlength\fP Where to return the length, or NULL
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.sp
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The third argument may be NULL if all you want to know is whether or not a
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substring is set. The yield is zero on success, or a negative error code
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otherwise. After a partial match, only substring 0 is available.
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.P
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There is a complete description of the PCRE2 native API in the
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.\" HREF
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\fBpcre2api\fP
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.\"
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page and a description of the POSIX API in the
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.\" HREF
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\fBpcre2posix\fP
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.\"
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page.
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