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d4de0e6f1e
I was über lazy at first, so took libs from SM. But actually it's quite easy to compile, so let's update to latest version \o/.
97 lines
4.1 KiB
Groff
97 lines
4.1 KiB
Groff
.TH PCRE_EXEC 3 "31 October 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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.nf
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.B int pcre_jit_exec(const pcre *\fIcode\fP, "const pcre_extra *\fIextra\fP,"
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.B " const char *\fIsubject\fP, int \fIlength\fP, int \fIstartoffset\fP,"
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.B " int \fIoptions\fP, int *\fIovector\fP, int \fIovecsize\fP,"
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.B " pcre_jit_stack *\fIjstack\fP);"
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.sp
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.B int pcre16_jit_exec(const pcre16 *\fIcode\fP, "const pcre16_extra *\fIextra\fP,"
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.B " PCRE_SPTR16 \fIsubject\fP, int \fIlength\fP, int \fIstartoffset\fP,"
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.B " int \fIoptions\fP, int *\fIovector\fP, int \fIovecsize\fP,"
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.B " pcre_jit_stack *\fIjstack\fP);"
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.sp
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.B int pcre32_jit_exec(const pcre32 *\fIcode\fP, "const pcre32_extra *\fIextra\fP,"
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.B " PCRE_SPTR32 \fIsubject\fP, int \fIlength\fP, int \fIstartoffset\fP,"
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.B " int \fIoptions\fP, int *\fIovector\fP, int \fIovecsize\fP,"
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.B " pcre_jit_stack *\fIjstack\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 matches a compiled regular expression that has been successfully
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studied with one of the JIT options against a given subject string, using a
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matching algorithm that is similar to Perl's. It is a "fast path" interface to
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JIT, and it bypasses some of the sanity checks that \fBpcre_exec()\fP applies.
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It returns offsets to captured substrings. Its arguments are:
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.sp
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\fIcode\fP Points to the compiled pattern
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\fIextra\fP Points to an associated \fBpcre[16|32]_extra\fP structure,
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or is NULL
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\fIsubject\fP Points to the subject string
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\fIlength\fP Length of the subject string, in bytes
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\fIstartoffset\fP Offset in bytes in the subject at which to
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start matching
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\fIoptions\fP Option bits
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\fIovector\fP Points to a vector of ints for result offsets
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\fIovecsize\fP Number of elements in the vector (a multiple of 3)
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\fIjstack\fP Pointer to a JIT stack
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.sp
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The allowed options are:
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.sp
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PCRE_NOTBOL Subject string is not the beginning of a line
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PCRE_NOTEOL Subject string is not the end of a line
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PCRE_NOTEMPTY An empty string is not a valid match
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PCRE_NOTEMPTY_ATSTART An empty string at the start of the subject
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is not a valid match
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PCRE_NO_UTF16_CHECK Do not check the subject for UTF-16
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validity (only relevant if PCRE_UTF16
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was set at compile time)
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PCRE_NO_UTF32_CHECK Do not check the subject for UTF-32
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validity (only relevant if PCRE_UTF32
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was set at compile time)
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PCRE_NO_UTF8_CHECK Do not check the subject for UTF-8
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validity (only relevant if PCRE_UTF8
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was set at compile time)
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PCRE_PARTIAL ) Return PCRE_ERROR_PARTIAL for a partial
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PCRE_PARTIAL_SOFT ) match if no full matches are found
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PCRE_PARTIAL_HARD Return PCRE_ERROR_PARTIAL for a partial match
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if that is found before a full match
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.sp
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However, the PCRE_NO_UTF[8|16|32]_CHECK options have no effect, as this check
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is never applied. For details of partial matching, see the
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.\" HREF
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\fBpcrepartial\fP
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.\"
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page. A \fBpcre_extra\fP structure contains the following fields:
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.sp
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\fIflags\fP Bits indicating which fields are set
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\fIstudy_data\fP Opaque data from \fBpcre[16|32]_study()\fP
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\fImatch_limit\fP Limit on internal resource use
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\fImatch_limit_recursion\fP Limit on internal recursion depth
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\fIcallout_data\fP Opaque data passed back to callouts
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\fItables\fP Points to character tables or is NULL
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\fImark\fP For passing back a *MARK pointer
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\fIexecutable_jit\fP Opaque data from JIT compilation
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.sp
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The flag bits are PCRE_EXTRA_STUDY_DATA, PCRE_EXTRA_MATCH_LIMIT,
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PCRE_EXTRA_MATCH_LIMIT_RECURSION, PCRE_EXTRA_CALLOUT_DATA,
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PCRE_EXTRA_TABLES, PCRE_EXTRA_MARK and PCRE_EXTRA_EXECUTABLE_JIT.
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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 JIT API in the
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.\" HREF
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\fBpcrejit\fP
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.\"
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page.
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