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42 lines
1.3 KiB
Plaintext
42 lines
1.3 KiB
Plaintext
.TH PCRE2_SUBSTRING_NAMETABLE_SCAN 3 "06 February 2019" "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_nametable_scan(const pcre2_code *\fIcode\fP,
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.B " PCRE2_SPTR \fIname\fP, PCRE2_SPTR *\fIfirst\fP, PCRE2_SPTR *\fIlast\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 convenience function finds, for a compiled pattern, the first and last
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entries for a given name in the table that translates capture group names into
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numbers.
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.sp
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\fIcode\fP Compiled regular expression
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\fIname\fP Name whose entries required
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\fIfirst\fP Where to return a pointer to the first entry
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\fIlast\fP Where to return a pointer to the last entry
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.sp
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When the name is found in the table, if \fIfirst\fP is NULL, the function
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returns a group number, but if there is more than one matching entry, it is not
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defined which one. Otherwise, when both pointers have been set, the yield of
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the function is the length of each entry in code units. If the name is not
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found, PCRE2_ERROR_NOSUBSTRING is returned.
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.P
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There is a complete description of the PCRE2 native API, including the format of
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the table entries, 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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