sorry, got deleted from the trunk instead my branch

lib/python/ts_regex.py

+##############################################################################
+# 
+# Zope Public License (ZPL) Version 1.0
+# -------------------------------------
+# 
+# Copyright (c) Digital Creations.  All rights reserved.
+# 
+# This license has been certified as Open Source(tm).
+# 
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+# 
+# 1. Redistributions in source code must retain the above copyright
+#    notice, this list of conditions, and the following disclaimer.
+# 
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions, and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 
+# 3. Digital Creations requests that attribution be given to Zope
+#    in any manner possible. Zope includes a "Powered by Zope"
+#    button that is installed by default. While it is not a license
+#    violation to remove this button, it is requested that the
+#    attribution remain. A significant investment has been put
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+#    continues to grow. This is one way to assure that growth.
+# 
+# 4. All advertising materials and documentation mentioning
+#    features derived from or use of this software must display
+#    the following acknowledgement:
+# 
+#      "This product includes software developed by Digital Creations
+#      for use in the Z Object Publishing Environment
+#      (http://www.zope.org/)."
+# 
+#    In the event that the product being advertised includes an
+#    intact Zope distribution (with copyright and license included)
+#    then this clause is waived.
+# 
+# 5. Names associated with Zope or Digital Creations must not be used to
+#    endorse or promote products derived from this software without
+#    prior written permission from Digital Creations.
+# 
+# 6. Modified redistributions of any form whatsoever must retain
+#    the following acknowledgment:
+# 
+#      "This product includes software developed by Digital Creations
+#      for use in the Z Object Publishing Environment
+#      (http://www.zope.org/)."
+# 
+#    Intact (re-)distributions of any official Zope release do not
+#    require an external acknowledgement.
+# 
+# 7. Modifications are encouraged but must be packaged separately as
+#    patches to official Zope releases.  Distributions that do not
+#    clearly separate the patches from the original work must be clearly
+#    labeled as unofficial distributions.  Modifications which do not
+#    carry the name Zope may be packaged in any form, as long as they
+#    conform to all of the clauses above.
+# 
+# 
+# Disclaimer
+# 
+#   THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS ``AS IS'' AND ANY
+#   EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+#   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+#   PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL DIGITAL CREATIONS OR ITS
+#   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+#   USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+#   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+#   OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+#   OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+#   SUCH DAMAGE.
+# 
+# 
+# This software consists of contributions made by Digital Creations and
+# many individuals on behalf of Digital Creations.  Specific
+# attributions are listed in the accompanying credits file.
+# 
+##############################################################################
+"""Provide a thread-safe interface to regex
+"""
+import regex, regsub #, Sync
+from regex import *
+from regsub import split, sub, gsub, splitx, capwords
+
+try: 
+    import thread
+except:
+    class allocate_lock:
+        def acquire(*args): pass
+        def release(*args): pass
+
+else:
+    class SafeFunction:
+        _l=thread.allocate_lock()
+        _a=_l.acquire
+        _r=_l.release
+
+        def __init__(self, f):
+            self._f=f
+
+        def __call__(self, *args, **kw):
+            self._a()
+            try: return apply(self._f, args, kw)
+            finally: self._r()
+
+    split=SafeFunction(split)
+    sub=SafeFunction(sub)
+    gsub=SafeFunction(gsub)
+    splitx=SafeFunction(splitx)
+    capwords=SafeFunction(capwords)
+
+    allocate_lock=thread.allocate_lock
+
+class compile:
+
+    _r=None
+    groupindex=None
+
+    def __init__(self, *args):
+        self._r=r=apply(regex.compile,args)
+        self._init(r)
+
+    def _init(self, r):
+        lock=allocate_lock()
+        self.__a=lock.acquire
+        self.__r=lock.release
+        self.translate=r.translate
+        self.givenpat=r.givenpat
+        self.realpat=r.realpat
+
+    def match(self, string, pos=0):
+        self.__a()
+        try: return self._r.match(string, pos)
+        finally: self.__r()
+
+    def search(self, string, pos=0):
+        self.__a()
+        try: return self._r.search(string, pos)
+        finally: self.__r()
+        
+    def search_group(self, str, group, pos=0):
+        """Search a string for a pattern.
+
+        If the pattern was not found, then None is returned,
+        otherwise, the location where the pattern was found,
+        as well as any specified group are returned.
+        """
+        self.__a()
+        try:
+            r=self._r
+            l=r.search(str, pos)
+            if l < 0: return None
+            return l, apply(r.group, group)
+        finally: self.__r()
+
+    def match_group(self, str, group, pos=0):
+        """Match a pattern against a string
+
+        If the string does not match the pattern, then None is
+        returned, otherwise, the length of the match, as well
+        as any specified group are returned.
+        """
+        self.__a()
+        try:
+            r=self._r
+            l=r.match(str, pos)
+            if l < 0: return None
+            return l, apply(r.group, group)
+        finally: self.__r()
+
+    def search_regs(self, str, pos=0):
+        """Search a string for a pattern.
+
+        If the pattern was not found, then None is returned,
+        otherwise, the 'regs' attribute of the expression is
+        returned.
+        """
+        self.__a()
+        try:
+            r=self._r
+            r.search(str, pos)
+            return r.regs
+        finally: self.__r()
+
+    def match_regs(self, str, pos=0):
+        """Match a pattern against a string
+
+        If the string does not match the pattern, then None is
+        returned, otherwise, the 'regs' attribute of the expression is
+        returned.
+        """
+        self.__a()
+        try:
+            r=self._r
+            r.match(str, pos)
+            return r.regs
+        finally: self.__r()
+
+class symcomp(compile):
+
+    def __init__(self, *args):
+        self._r=r=apply(regex.symcomp,args)
+        self._init(r)
+        self.groupindex=r.groupindex
+
+
+
+
+