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63 lines
1.8 KiB
Groff
63 lines
1.8 KiB
Groff
.TH PCRE_GET_NAMED_SUBSTRING 3 "24 June 2012" "PCRE 8.30"
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.SH NAME
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PCRE - Perl-compatible regular expressions
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.SH SYNOPSIS
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.rs
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.sp
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.B #include <pcre.h>
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.PP
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.SM
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.B int pcre_get_named_substring(const pcre *\fIcode\fP,
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.ti +5n
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.B const char *\fIsubject\fP, int *\fIovector\fP,
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.ti +5n
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.B int \fIstringcount\fP, const char *\fIstringname\fP,
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.ti +5n
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.B const char **\fIstringptr\fP);
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.PP
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.B int pcre16_get_named_substring(const pcre16 *\fIcode\fP,
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.ti +5n
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.B PCRE_SPTR16 \fIsubject\fP, int *\fIovector\fP,
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.ti +5n
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.B int \fIstringcount\fP, PCRE_SPTR16 \fIstringname\fP,
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.ti +5n
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.B PCRE_SPTR16 *\fIstringptr\fP);
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.PP
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.B int pcre32_get_named_substring(const pcre32 *\fIcode\fP,
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.ti +5n
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.B PCRE_SPTR32 \fIsubject\fP, int *\fIovector\fP,
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.ti +5n
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.B int \fIstringcount\fP, PCRE_SPTR32 \fIstringname\fP,
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.ti +5n
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.B PCRE_SPTR32 *\fIstringptr\fP);
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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 is a convenience function for extracting a captured substring by name. The
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arguments are:
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.sp
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\fIcode\fP Compiled pattern
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\fIsubject\fP Subject that has been successfully matched
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\fIovector\fP Offset vector that \fBpcre[16|32]_exec()\fP used
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\fIstringcount\fP Value returned by \fBpcre[16|32]_exec()\fP
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\fIstringname\fP Name of the required substring
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\fIstringptr\fP Where to put the string pointer
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.sp
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The memory in which the substring is placed is obtained by calling
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\fBpcre[16|32]_malloc()\fP. The convenience function
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\fBpcre[16|32]_free_substring()\fP can be used to free it when it is no longer
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needed. The yield of the function is the length of the extracted substring,
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PCRE_ERROR_NOMEMORY if sufficient memory could not be obtained, or
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PCRE_ERROR_NOSUBSTRING if the string name is invalid.
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.P
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There is a complete description of the PCRE native API in the
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.\" HREF
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\fBpcreapi\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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\fBpcreposix\fP
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.\"
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page.
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