#!/usr/bin/env python+
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#############################################################################+
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##+
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## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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## All rights reserved.+
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## Contact: Nokia Corporation (qt-info@nokia.com)+
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##+
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## This file is part of the test suite of the Qt Toolkit.+
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##+
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## $QT_BEGIN_LICENSE:LGPL$+
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## No Commercial Usage+
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## This file contains pre-release code and may not be distributed.+
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## You may use this file in accordance with the terms and conditions+
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## contained in the Technology Preview License Agreement accompanying+
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## this package.+
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##+
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## GNU Lesser General Public License Usage+
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## Alternatively, this file may be used under the terms of the GNU Lesser+
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## General Public License version 2.1 as published by the Free Software+
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## Foundation and appearing in the file LICENSE.LGPL included in the+
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## packaging of this file.  Please review the following information to+
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## ensure the GNU Lesser General Public License version 2.1 requirements+
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## will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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##+
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## In addition, as a special exception, Nokia gives you certain additional+
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## rights.  These rights are described in the Nokia Qt LGPL Exception+
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## version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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##+
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## If you have questions regarding the use of this file, please contact+
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## Nokia at qt-info@nokia.com.+
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## $QT_END_LICENSE$+
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##+
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#############################################################################+
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+
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import sys+
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import os+
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import xml.dom.minidom+
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+
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doc_cache = {}+
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+
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class DraftResolution:+
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    # See http://www.unicode.org/cldr/process.html for description+
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    unconfirmed = 'unconfirmed'+
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    provisional = 'provisional'+
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    contributed = 'contributed'+
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    approved = 'approved'+
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+
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+
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def findChild(parent, tag_name, arg_value, draft=None):+
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    for node in parent.childNodes:+
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        if node.nodeType != node.ELEMENT_NODE:+
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            continue+
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        if node.nodeName != tag_name:+
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            continue+
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        if arg_value:+
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            if not node.attributes.has_key('type'):+
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                continue+
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            if node.attributes['type'].nodeValue != arg_value:+
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                continue+
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        if draft:+
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            if node.attributes.has_key('draft'):+
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                if node.attributes['draft'].nodeValue != draft:+
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                    continue+
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            elif draft != DraftResolution.approved:+
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                continue+
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        return node+
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    return False+
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+
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def _findEntry(file, path, draft=None):+
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    doc = False+
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    if doc_cache.has_key(file):+
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        doc = doc_cache[file]+
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    else:+
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        doc = xml.dom.minidom.parse(file)+
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        doc_cache[file] = doc+
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+
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    elt = doc.documentElement+
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    tag_spec_list = path.split("/")+
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    last_entry = None+
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    if draft is not None:+
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        last_entry = tag_spec_list[-1]+
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        tag_spec_list = tag_spec_list[:-1]+
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    for tag_spec in tag_spec_list:+
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        tag_name = tag_spec+
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        arg_value = ''+
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        left_bracket = tag_spec.find('[')+
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        if left_bracket != -1:+
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            tag_name = tag_spec[:left_bracket]+
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            arg_value = tag_spec[left_bracket+1:-1]+
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        elt = findChild(elt, tag_name, arg_value)+
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        if not elt:+
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            return ""+
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    if last_entry is not None:+
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        elt = findChild(elt, last_entry, '', draft)+
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        if not elt:+
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            return ""+
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    return elt.firstChild.nodeValue+
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+
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def findAlias(file):+
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    doc = doc_cache[file]+
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    alias_elt = findChild(doc.documentElement, "alias", "")+
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    if not alias_elt:+
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        return False+
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    if not alias_elt.attributes.has_key('source'):+
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        return False+
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    return alias_elt.attributes['source'].nodeValue+
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+
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def findEntry(base, path, draft=None):+
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    file = base + ".xml"+
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+
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    if os.path.isfile(file):+
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        result = _findEntry(file, path, draft)+
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        if result:+
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            return result+
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+
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        alias = findAlias(file)+
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        if alias:+
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            file = os.path.dirname(base) + "/" + alias + ".xml"+
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            if os.path.isfile(file):+
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                result = _findEntry(file, path, draft)+
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                if result:+
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                    return result+
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+
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    file = base[:-3] + ".xml"+
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    if os.path.isfile(file):+
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        result = _findEntry(file, path, draft)+
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        if result:+
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            return result+
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        alias = findAlias(file)+
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        if alias:+
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            file = os.path.dirname(base) + "/" + alias + ".xml"+
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            if os.path.isfile(file):+
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                result = _findEntry(file, path, draft)+
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                if result:+
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                    return result+
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+
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    if not draft:+
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        file = os.path.dirname(base) + "/root.xml"+
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        result = _findEntry(file, path, draft)+
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    return result+
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+
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