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update to pcre 7.9

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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@13706 d0543943-73ff-0310-b7d9-9358b9ac24b2
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Michael Jerris
2009-06-08 23:51:30 +00:00
parent a1e5add731
commit f7efdaa901
178 changed files with 43560 additions and 11382 deletions
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@@ -21,6 +21,7 @@ man page, in case the conversion went wrong.
<li><a name="TOC6" href="#SEC6">ERROR MESSAGES</a>
<li><a name="TOC7" href="#SEC7">MEMORY USAGE</a>
<li><a name="TOC8" href="#SEC8">AUTHOR</a>
<li><a name="TOC9" href="#SEC9">REVISION</a>
</ul>
<br><a name="SEC1" href="#TOC1">SYNOPSIS OF POSIX API</a><br>
<P>
@@ -58,11 +59,11 @@ command for linking an application that uses them. Because the POSIX functions
call the native ones, it is also necessary to add <b>-lpcre</b>.
</P>
<P>
I have implemented only those option bits that can be reasonably mapped to PCRE
native options. In addition, the option REG_EXTENDED is defined with the value
zero. This has no effect, but since programs that are written to the POSIX
interface often use it, this makes it easier to slot in PCRE as a replacement
library. Other POSIX options are not even defined.
I have implemented only those POSIX option bits that can be reasonably mapped
to PCRE native options. In addition, the option REG_EXTENDED is defined with
the value zero. This has no effect, but since programs that are written to the
POSIX interface often use it, this makes it easier to slot in PCRE as a
replacement library. Other POSIX options are not even defined.
</P>
<P>
When PCRE is called via these functions, it is only the API that is POSIX-like
@@ -179,18 +180,36 @@ REG_NEWLINE action.
<br><a name="SEC5" href="#TOC1">MATCHING A PATTERN</a><br>
<P>
The function <b>regexec()</b> is called to match a compiled pattern <i>preg</i>
against a given <i>string</i>, which is terminated by a zero byte, subject to
the options in <i>eflags</i>. These can be:
against a given <i>string</i>, which is by default terminated by a zero byte
(but see REG_STARTEND below), subject to the options in <i>eflags</i>. These can
be:
<pre>
REG_NOTBOL
</pre>
The PCRE_NOTBOL option is set when calling the underlying PCRE matching
function.
<pre>
REG_NOTEMPTY
</pre>
The PCRE_NOTEMPTY option is set when calling the underlying PCRE matching
function. Note that REG_NOTEMPTY is not part of the POSIX standard. However,
setting this option can give more POSIX-like behaviour in some situations.
<pre>
REG_NOTEOL
</pre>
The PCRE_NOTEOL option is set when calling the underlying PCRE matching
function.
<pre>
REG_STARTEND
</pre>
The string is considered to start at <i>string</i> + <i>pmatch[0].rm_so</i> and
to have a terminating NUL located at <i>string</i> + <i>pmatch[0].rm_eo</i>
(there need not actually be a NUL at that location), regardless of the value of
<i>nmatch</i>. This is a BSD extension, compatible with but not specified by
IEEE Standard 1003.2 (POSIX.2), and should be used with caution in software
intended to be portable to other systems. Note that a non-zero <i>rm_so</i> does
not imply REG_NOTBOL; REG_STARTEND affects only the location of the string, not
how it is matched.
</P>
<P>
If the pattern was compiled with the REG_NOSUB flag, no data about any matched
@@ -231,14 +250,17 @@ memory, after which <i>preg</i> may no longer be used as a compiled expression.
<P>
Philip Hazel
<br>
University Computing Service,
University Computing Service
<br>
Cambridge CB2 3QH, England.
<br>
Cambridge CB2 3QG, England.
</P>
<br><a name="SEC9" href="#TOC1">REVISION</a><br>
<P>
Last updated: 16 January 2006
Last updated: 11 March 2009
<br>
Copyright &copy; 1997-2009 University of Cambridge.
<br>
Copyright &copy; 1997-2006 University of Cambridge.
<p>
Return to the <a href="index.html">PCRE index page</a>.
</p>