Initial import from the monolithic Qt.

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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 851 insertions, 0 deletions

diff --git a/src/linguist/shared/xliff.cpp b/src/linguist/shared/xliff.cpp
new file mode 100644
index 000000000..40fbcabc1
--- /dev/null
+++ b/src/linguist/shared/xliff.cpp
@@ -0,0 +1,851 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Linguist of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "translator.h"
+
+#include <QtCore/QDebug>
+#include <QtCore/QMap>
+#include <QtCore/QStack>
+#include <QtCore/QString>
+#include <QtCore/QTextCodec>
+#include <QtCore/QTextStream>
+
+#include <QtXml/QXmlAttributes>
+#include <QtXml/QXmlDefaultHandler>
+#include <QtXml/QXmlParseException>
+
+
+// The string value is historical and reflects the main purpose: Keeping
+// obsolete entries separate from the magic file message (which both have
+// no location information, but typically reside at opposite ends of the file).
+#define MAGIC_OBSOLETE_REFERENCE "Obsolete_PO_entries"
+
+QT_BEGIN_NAMESPACE
+
+/**
+ * Implementation of XLIFF file format for Linguist
+ */
+//static const char *restypeDomain = "x-gettext-domain";
+static const char *restypeContext = "x-trolltech-linguist-context";
+static const char *restypePlurals = "x-gettext-plurals";
+static const char *restypeDummy = "x-dummy";
+static const char *dataTypeUIFile = "x-trolltech-designer-ui";
+static const char *contextMsgctxt = "x-gettext-msgctxt"; // XXX Troll invention, so far.
+static const char *contextOldMsgctxt = "x-gettext-previous-msgctxt"; // XXX Troll invention, so far.
+static const char *attribPlural = "trolltech:plural";
+static const char *XLIFF11namespaceURI = "urn:oasis:names:tc:xliff:document:1.1";
+static const char *XLIFF12namespaceURI = "urn:oasis:names:tc:xliff:document:1.2";
+static const char *TrollTsNamespaceURI = "urn:trolltech:names:ts:document:1.0";
+
+#define COMBINE4CHARS(c1, c2, c3, c4) \
+    (int(c1) << 24 | int(c2) << 16 | int(c3) << 8 | int(c4) )
+
+static QString dataType(const TranslatorMessage &m)
+{
+    QByteArray fileName = m.fileName().toAscii();
+    unsigned int extHash = 0;
+    int pos = fileName.count() - 1;
+    for (int pass = 0; pass < 4 && pos >=0; ++pass, --pos) {
+        if (fileName.at(pos) == '.')
+            break;
+        extHash |= ((int)fileName.at(pos) << (8*pass));
+    }
+
+    switch (extHash) {
+        case COMBINE4CHARS(0,'c','p','p'):
+        case COMBINE4CHARS(0,'c','x','x'):
+        case COMBINE4CHARS(0,'c','+','+'):
+        case COMBINE4CHARS(0,'h','p','p'):
+        case COMBINE4CHARS(0,'h','x','x'):
+        case COMBINE4CHARS(0,'h','+','+'):
+            return QLatin1String("cpp");
+        case COMBINE4CHARS(0, 0 , 0 ,'c'):
+        case COMBINE4CHARS(0, 0 , 0 ,'h'):
+        case COMBINE4CHARS(0, 0 ,'c','c'):
+        case COMBINE4CHARS(0, 0 ,'c','h'):
+        case COMBINE4CHARS(0, 0 ,'h','h'):
+            return QLatin1String("c");
+        case COMBINE4CHARS(0, 0 ,'u','i'):
+            return QLatin1String(dataTypeUIFile);   //### form?
+        default:
+            return QLatin1String("plaintext");      // we give up
+    }
+}
+
+static void writeIndent(QTextStream &ts, int indent)
+{
+    ts << QString().fill(QLatin1Char(' '), indent * 2);
+}
+
+struct CharMnemonic
+{
+    char ch;
+    char escape;
+    const char *mnemonic;
+};
+
+static const CharMnemonic charCodeMnemonics[] = {
+    {0x07, 'a', "bel"},
+    {0x08, 'b', "bs"},
+    {0x09, 't', "tab"},
+    {0x0a, 'n', "lf"},
+    {0x0b, 'v', "vt"},
+    {0x0c, 'f', "ff"},
+    {0x0d, 'r', "cr"}
+};
+
+static char charFromEscape(char escape)
+{
+    for (uint i = 0; i < sizeof(charCodeMnemonics)/sizeof(CharMnemonic); ++i) {
+        CharMnemonic cm =  charCodeMnemonics[i];
+        if (cm.escape == escape)
+            return cm.ch;
+    }
+    Q_ASSERT(0);
+    return escape;
+}
+
+static QString numericEntity(int ch, bool makePhs)
+{
+    // ### This needs to be reviewed, to reflect the updated XLIFF-PO spec.
+    if (!makePhs || ch < 7 || ch > 0x0d)
+        return QString::fromAscii("&#x%1;").arg(QString::number(ch, 16));
+
+    CharMnemonic cm = charCodeMnemonics[int(ch) - 7];
+    QString name = QLatin1String(cm.mnemonic);
+    char escapechar = cm.escape;
+
+    static int id = 0;
+    return QString::fromAscii("<ph id=\"ph%1\" ctype=\"x-ch-%2\">\\%3</ph>")
+              .arg(++id) .arg(name) .arg(escapechar);
+}
+
+static QString protect(const QString &str, bool makePhs = true)
+{
+    QString result;
+    int len = str.size();
+    for (int i = 0; i != len; ++i) {
+        uint c = str.at(i).unicode();
+        switch (c) {
+        case '\"':
+            result += QLatin1String("&quot;");
+            break;
+        case '&':
+            result += QLatin1String("&amp;");
+            break;
+        case '>':
+            result += QLatin1String("&gt;");
+            break;
+        case '<':
+            result += QLatin1String("&lt;");
+            break;
+        case '\'':
+            result += QLatin1String("&apos;");
+            break;
+        default:
+            if (c < 0x20 && c != '\r' && c != '\n' && c != '\t')
+                result += numericEntity(c, makePhs);
+            else // this also covers surrogates
+                result += QChar(c);
+        }
+    }
+    return result;
+}
+
+
+static void writeExtras(QTextStream &ts, int indent,
+                        const TranslatorMessage::ExtraData &extras, const QRegExp &drops)
+{
+    for (Translator::ExtraData::ConstIterator it = extras.begin(); it != extras.end(); ++it) {
+        if (!drops.exactMatch(it.key())) {
+            writeIndent(ts, indent);
+            ts << "<trolltech:" << it.key() << '>'
+               << protect(it.value())
+               << "</trolltech:" << it.key() << ">\n";
+        }
+    }
+}
+
+static void writeLineNumber(QTextStream &ts, const TranslatorMessage &msg, int indent)
+{
+    if (msg.lineNumber() == -1)
+        return;
+    writeIndent(ts, indent);
+    ts << "<context-group purpose=\"location\"><context context-type=\"linenumber\">"
+       << msg.lineNumber() << "</context></context-group>\n";
+    foreach (const TranslatorMessage::Reference &ref, msg.extraReferences()) {
+        writeIndent(ts, indent);
+        ts << "<context-group purpose=\"location\">";
+        if (ref.fileName() != msg.fileName())
+            ts << "<context context-type=\"sourcefile\">" << ref.fileName() << "</context>";
+        ts << "<context context-type=\"linenumber\">" << ref.lineNumber()
+           << "</context></context-group>\n";
+    }
+}
+
+static void writeComment(QTextStream &ts, const TranslatorMessage &msg, const QRegExp &drops, int indent)
+{
+    if (!msg.comment().isEmpty()) {
+        writeIndent(ts, indent);
+        ts << "<context-group><context context-type=\"" << contextMsgctxt << "\">"
+           << protect(msg.comment(), false)
+           << "</context></context-group>\n";
+    }
+    if (!msg.oldComment().isEmpty()) {
+        writeIndent(ts, indent);
+        ts << "<context-group><context context-type=\"" << contextOldMsgctxt << "\">"
+           << protect(msg.oldComment(), false)
+           << "</context></context-group>\n";
+    }
+    writeExtras(ts, indent, msg.extras(), drops);
+    if (!msg.extraComment().isEmpty()) {
+        writeIndent(ts, indent);
+        ts << "<note annotates=\"source\" from=\"developer\">"
+           << protect(msg.extraComment()) << "</note>\n";
+    }
+    if (!msg.translatorComment().isEmpty()) {
+        writeIndent(ts, indent);
+        ts << "<note from=\"translator\">"
+           << protect(msg.translatorComment()) << "</note>\n";
+    }
+}
+
+static void writeTransUnits(QTextStream &ts, const TranslatorMessage &msg, const QRegExp &drops, int indent)
+{
+    static int msgid;
+    QString msgidstr = !msg.id().isEmpty() ? msg.id() : QString::fromAscii("_msg%1").arg(++msgid);
+
+    QStringList translns = msg.translations();
+    QHash<QString, QString>::const_iterator it;
+    QString pluralStr;
+    QStringList sources(msg.sourceText());
+    if ((it = msg.extras().find(QString::fromLatin1("po-msgid_plural"))) != msg.extras().end())
+        sources.append(*it);
+    QStringList oldsources;
+    if (!msg.oldSourceText().isEmpty())
+        oldsources.append(msg.oldSourceText());
+    if ((it = msg.extras().find(QString::fromLatin1("po-old_msgid_plural"))) != msg.extras().end()) {
+        if (oldsources.isEmpty()) {
+            if (sources.count() == 2)
+                oldsources.append(QString());
+            else
+                pluralStr = QLatin1Char(' ') + QLatin1String(attribPlural) + QLatin1String("=\"yes\"");
+        }
+        oldsources.append(*it);
+    }
+
+    QStringList::const_iterator
+        srcit = sources.begin(), srcend = sources.end(),
+        oldsrcit = oldsources.begin(), oldsrcend = oldsources.end(),
+        transit = translns.begin(), transend = translns.end();
+    int plural = 0;
+    QString source;
+    while (srcit != srcend || oldsrcit != oldsrcend || transit != transend) {
+        QByteArray attribs;
+        QByteArray state;
+        if (msg.type() == TranslatorMessage::Obsolete) {
+            if (!msg.isPlural())
+                attribs = " translate=\"no\"";
+        } else if (msg.type() == TranslatorMessage::Finished) {
+            attribs = " approved=\"yes\"";
+        } else if (transit != transend && !transit->isEmpty()) {
+            state = " state=\"needs-review-translation\"";
+        }
+        writeIndent(ts, indent);
+        ts << "<trans-unit id=\"" << msgidstr;
+        if (msg.isPlural())
+            ts << "[" << plural++ << "]";
+        ts << "\"" << attribs << ">\n";
+        ++indent;
+
+        writeIndent(ts, indent);
+        if (srcit != srcend) {
+            source = *srcit;
+            ++srcit;
+        } // else just repeat last element
+        ts << "<source xml:space=\"preserve\">" << protect(source) << "</source>\n";
+
+        bool puttrans = false;
+        QString translation;
+        if (transit != transend) {
+            translation = *transit;
+            translation.replace(QChar(Translator::BinaryVariantSeparator),
+                                QChar(Translator::TextVariantSeparator));
+            ++transit;
+            puttrans = true;
+        }
+        do {
+            if (oldsrcit != oldsrcend && !oldsrcit->isEmpty()) {
+                writeIndent(ts, indent);
+                ts << "<alt-trans>\n";
+                ++indent;
+                writeIndent(ts, indent);
+                ts << "<source xml:space=\"preserve\"" << pluralStr << '>' << protect(*oldsrcit) << "</source>\n";
+                if (!puttrans) {
+                    writeIndent(ts, indent);
+                    ts << "<target restype=\"" << restypeDummy << "\"/>\n";
+                }
+            }
+
+            if (puttrans) {
+                writeIndent(ts, indent);
+                ts << "<target xml:space=\"preserve\"" << state << ">" << protect(translation) << "</target>\n";
+            }
+
+            if (oldsrcit != oldsrcend) {
+                if (!oldsrcit->isEmpty()) {
+                    --indent;
+                    writeIndent(ts, indent);
+                    ts << "</alt-trans>\n";
+                }
+                ++oldsrcit;
+            }
+
+            puttrans = false;
+        } while (srcit == srcend && oldsrcit != oldsrcend);
+
+        if (!msg.isPlural()) {
+            writeLineNumber(ts, msg, indent);
+            writeComment(ts, msg, drops, indent);
+        }
+
+        --indent;
+        writeIndent(ts, indent);
+        ts << "</trans-unit>\n";
+    }
+}
+
+static void writeMessage(QTextStream &ts, const TranslatorMessage &msg, const QRegExp &drops, int indent)
+{
+    if (msg.isPlural()) {
+        writeIndent(ts, indent);
+        ts << "<group restype=\"" << restypePlurals << "\"";
+        if (!msg.id().isEmpty())
+            ts << " id=\"" << msg.id() << "\"";
+        if (msg.type() == TranslatorMessage::Obsolete)
+            ts << " translate=\"no\"";
+        ts << ">\n";
+        ++indent;
+        writeLineNumber(ts, msg, indent);
+        writeComment(ts, msg, drops, indent);
+
+        writeTransUnits(ts, msg, drops, indent);
+        --indent;
+        writeIndent(ts, indent);
+        ts << "</group>\n";
+    } else {
+        writeTransUnits(ts, msg, drops, indent);
+    }
+}
+
+
+class XLIFFHandler : public QXmlDefaultHandler
+{
+public:
+    XLIFFHandler(Translator &translator, ConversionData &cd);
+
+    bool startElement(const QString& namespaceURI, const QString &localName,
+        const QString &qName, const QXmlAttributes &atts );
+    bool endElement(const QString& namespaceURI, const QString &localName,
+        const QString &qName );
+    bool characters(const QString &ch);
+    bool fatalError(const QXmlParseException &exception);
+
+    bool endDocument();
+
+private:
+    enum XliffContext {
+        XC_xliff,
+        XC_group,
+        XC_trans_unit,
+        XC_context_group,
+        XC_context_group_any,
+        XC_context,
+        XC_context_filename,
+        XC_context_linenumber,
+        XC_context_context,
+        XC_context_comment,
+        XC_context_old_comment,
+        XC_ph,
+        XC_extra_comment,
+        XC_translator_comment,
+        XC_restype_context,
+        XC_restype_translation,
+        XC_restype_plurals,
+        XC_alt_trans
+    };
+    void pushContext(XliffContext ctx);
+    bool popContext(XliffContext ctx);
+    XliffContext currentContext() const;
+    bool hasContext(XliffContext ctx) const;
+    bool finalizeMessage(bool isPlural);
+
+private:
+    Translator &m_translator;
+    ConversionData &m_cd;
+    TranslatorMessage::Type m_type;
+    QString m_language;
+    QString m_sourceLanguage;
+    QString m_context;
+    QString m_id;
+    QStringList m_sources;
+    QStringList m_oldSources;
+    QString m_comment;
+    QString m_oldComment;
+    QString m_extraComment;
+    QString m_translatorComment;
+    bool m_isPlural;
+    bool m_hadAlt;
+    QStringList m_translations;
+    QString m_fileName;
+    int     m_lineNumber;
+    QString m_extraFileName;
+    TranslatorMessage::References m_refs;
+    TranslatorMessage::ExtraData m_extra;
+
+    QString accum;
+    QString m_ctype;
+    const QString m_URITT;  // convenience and efficiency
+    const QString m_URI;  // ...
+    const QString m_URI12;  // ...
+    QStack<int> m_contextStack;
+};
+
+XLIFFHandler::XLIFFHandler(Translator &translator, ConversionData &cd)
+  : m_translator(translator), m_cd(cd),
+    m_type(TranslatorMessage::Finished),
+    m_lineNumber(-1),
+    m_URITT(QLatin1String(TrollTsNamespaceURI)),
+    m_URI(QLatin1String(XLIFF11namespaceURI)),
+    m_URI12(QLatin1String(XLIFF12namespaceURI))
+{}
+
+
+void XLIFFHandler::pushContext(XliffContext ctx)
+{
+    m_contextStack.push_back(ctx);
+}
+
+// Only pops it off if the top of the stack contains ctx
+bool XLIFFHandler::popContext(XliffContext ctx)
+{
+    if (!m_contextStack.isEmpty() && m_contextStack.top() == ctx) {
+        m_contextStack.pop();
+        return true;
+    }
+    return false;
+}
+
+XLIFFHandler::XliffContext XLIFFHandler::currentContext() const
+{
+    if (!m_contextStack.isEmpty())
+        return (XliffContext)m_contextStack.top();
+    return XC_xliff;
+}
+
+// traverses to the top to check all of the parent contexes.
+bool XLIFFHandler::hasContext(XliffContext ctx) const
+{
+    for (int i = m_contextStack.count() - 1; i >= 0; --i) {
+        if (m_contextStack.at(i) == ctx)
+            return true;
+    }
+    return false;
+}
+
+bool XLIFFHandler::startElement(const QString& namespaceURI,
+    const QString &localName, const QString &qName, const QXmlAttributes &atts )
+{
+    Q_UNUSED(qName);
+    if (namespaceURI == m_URITT)
+        goto bail;
+    if (namespaceURI != m_URI && namespaceURI != m_URI12)
+        return false;
+    if (localName == QLatin1String("xliff")) {
+        // make sure that the stack is not empty during parsing
+        pushContext(XC_xliff);
+    } else if (localName == QLatin1String("file")) {
+        m_fileName = atts.value(QLatin1String("original"));
+        m_language = atts.value(QLatin1String("target-language"));
+        m_language.replace(QLatin1Char('-'), QLatin1Char('_'));
+        m_sourceLanguage = atts.value(QLatin1String("source-language"));
+        m_sourceLanguage.replace(QLatin1Char('-'), QLatin1Char('_'));
+        if (m_sourceLanguage == QLatin1String("en"))
+            m_sourceLanguage.clear();
+    } else if (localName == QLatin1String("group")) {
+        if (atts.value(QLatin1String("restype")) == QLatin1String(restypeContext)) {
+            m_context = atts.value(QLatin1String("resname"));
+            pushContext(XC_restype_context);
+        } else {
+            if (atts.value(QLatin1String("restype")) == QLatin1String(restypePlurals)) {
+                pushContext(XC_restype_plurals);
+                m_id = atts.value(QLatin1String("id"));
+                if (atts.value(QLatin1String("translate")) == QLatin1String("no"))
+                    m_type = TranslatorMessage::Obsolete;
+            } else {
+                pushContext(XC_group);
+            }
+        }
+    } else if (localName == QLatin1String("trans-unit")) {
+        if (!hasContext(XC_restype_plurals) || m_sources.isEmpty() /* who knows ... */)
+            if (atts.value(QLatin1String("translate")) == QLatin1String("no"))
+                m_type = TranslatorMessage::Obsolete;
+        if (!hasContext(XC_restype_plurals)) {
+            m_id = atts.value(QLatin1String("id"));
+            if (m_id.startsWith(QLatin1String("_msg")))
+                m_id.clear();
+        }
+        if (m_type != TranslatorMessage::Obsolete &&
+            atts.value(QLatin1String("approved")) != QLatin1String("yes"))
+            m_type = TranslatorMessage::Unfinished;
+        pushContext(XC_trans_unit);
+        m_hadAlt = false;
+    } else if (localName == QLatin1String("alt-trans")) {
+        pushContext(XC_alt_trans);
+    } else if (localName == QLatin1String("source")) {
+        m_isPlural = atts.value(QLatin1String(attribPlural)) == QLatin1String("yes");
+    } else if (localName == QLatin1String("target")) {
+        if (atts.value(QLatin1String("restype")) != QLatin1String(restypeDummy))
+            pushContext(XC_restype_translation);
+    } else if (localName == QLatin1String("context-group")) {
+        QString purpose = atts.value(QLatin1String("purpose"));
+        if (purpose == QLatin1String("location"))
+            pushContext(XC_context_group);
+        else
+            pushContext(XC_context_group_any);
+    } else if (currentContext() == XC_context_group && localName == QLatin1String("context")) {
+        QString ctxtype = atts.value(QLatin1String("context-type"));
+        if (ctxtype == QLatin1String("linenumber"))
+            pushContext(XC_context_linenumber);
+        else if (ctxtype == QLatin1String("sourcefile"))
+            pushContext(XC_context_filename);
+    } else if (currentContext() == XC_context_group_any && localName == QLatin1String("context")) {
+        QString ctxtype = atts.value(QLatin1String("context-type"));
+        if (ctxtype == QLatin1String(contextMsgctxt))
+            pushContext(XC_context_comment);
+        else if (ctxtype == QLatin1String(contextOldMsgctxt))
+            pushContext(XC_context_old_comment);
+    } else if (localName == QLatin1String("note")) {
+        if (atts.value(QLatin1String("annotates")) == QLatin1String("source") &&
+            atts.value(QLatin1String("from")) == QLatin1String("developer"))
+            pushContext(XC_extra_comment);
+        else
+            pushContext(XC_translator_comment);
+    } else if (localName == QLatin1String("ph")) {
+        QString ctype = atts.value(QLatin1String("ctype"));
+        if (ctype.startsWith(QLatin1String("x-ch-")))
+            m_ctype = ctype.mid(5);
+        pushContext(XC_ph);
+    }
+bail:
+    if (currentContext() != XC_ph)
+        accum.clear();
+    return true;
+}
+
+bool XLIFFHandler::endElement(const QString &namespaceURI, const QString& localName,
+    const QString &qName)
+{
+    Q_UNUSED(qName);
+    if (namespaceURI == m_URITT) {
+        if (hasContext(XC_trans_unit) || hasContext(XC_restype_plurals))
+            m_extra[localName] = accum;
+        else
+            m_translator.setExtra(localName, accum);
+        return true;
+    }
+    if (namespaceURI != m_URI && namespaceURI != m_URI12)
+        return false;
+    //qDebug() << "URI:" <<  namespaceURI << "QNAME:" << qName;
+    if (localName == QLatin1String("xliff")) {
+        popContext(XC_xliff);
+    } else if (localName == QLatin1String("source")) {
+        if (hasContext(XC_alt_trans)) {
+            if (m_isPlural && m_oldSources.isEmpty())
+                m_oldSources.append(QString());
+            m_oldSources.append(accum);
+            m_hadAlt = true;
+        } else {
+            m_sources.append(accum);
+        }
+    } else if (localName == QLatin1String("target")) {
+        if (popContext(XC_restype_translation)) {
+            accum.replace(QChar(Translator::TextVariantSeparator),
+                          QChar(Translator::BinaryVariantSeparator));
+            m_translations.append(accum);
+        }
+    } else if (localName == QLatin1String("context-group")) {
+        if (popContext(XC_context_group)) {
+            m_refs.append(TranslatorMessage::Reference(
+                m_extraFileName.isEmpty() ? m_fileName : m_extraFileName, m_lineNumber));
+            m_extraFileName.clear();
+            m_lineNumber = -1;
+        } else {
+            popContext(XC_context_group_any);
+        }
+    } else if (localName == QLatin1String("context")) {
+        if (popContext(XC_context_linenumber)) {
+            bool ok;
+            m_lineNumber = accum.trimmed().toInt(&ok);
+            if (!ok)
+                m_lineNumber = -1;
+        } else if (popContext(XC_context_filename)) {
+            m_extraFileName = accum;
+        } else if (popContext(XC_context_comment)) {
+            m_comment = accum;
+        } else if (popContext(XC_context_old_comment)) {
+            m_oldComment = accum;
+        }
+    } else if (localName == QLatin1String("note")) {
+        if (popContext(XC_extra_comment))
+            m_extraComment = accum;
+        else if (popContext(XC_translator_comment))
+            m_translatorComment = accum;
+    } else if (localName == QLatin1String("ph")) {
+        m_ctype.clear();
+        popContext(XC_ph);
+    } else if (localName == QLatin1String("trans-unit")) {
+        popContext(XC_trans_unit);
+        if (!m_hadAlt)
+            m_oldSources.append(QString());
+        if (!hasContext(XC_restype_plurals)) {
+            if (!finalizeMessage(false))
+                return false;
+        }
+    } else if (localName == QLatin1String("alt-trans")) {
+        popContext(XC_alt_trans);
+    } else if (localName == QLatin1String("group")) {
+        if (popContext(XC_restype_plurals)) {
+            if (!finalizeMessage(true))
+                return false;
+        } else if (popContext(XC_restype_context)) {
+            m_context.clear();
+        } else {
+            popContext(XC_group);
+        }
+    }
+    return true;
+}
+
+bool XLIFFHandler::characters(const QString &ch)
+{
+    if (currentContext() == XC_ph) {
+        // handle the content of <ph> elements
+        for (int i = 0; i < ch.count(); ++i) {
+            QChar chr = ch.at(i);
+            if (accum.endsWith(QLatin1Char('\\')))
+                accum[accum.size() - 1] = QLatin1Char(charFromEscape(chr.toAscii()));
+            else
+                accum.append(chr);
+        }
+    } else {
+        QString t = ch;
+        t.replace(QLatin1String("\r"), QLatin1String(""));
+        accum.append(t);
+    }
+    return true;
+}
+
+bool XLIFFHandler::endDocument()
+{
+    m_translator.setLanguageCode(m_language);
+    m_translator.setSourceLanguageCode(m_sourceLanguage);
+    return true;
+}
+
+bool XLIFFHandler::finalizeMessage(bool isPlural)
+{
+    if (m_sources.isEmpty()) {
+        m_cd.appendError(QLatin1String("XLIFF syntax error: Message without source string."));
+        return false;
+    }
+    if (m_type == TranslatorMessage::Obsolete && m_refs.size() == 1
+        && m_refs.at(0).fileName() == QLatin1String(MAGIC_OBSOLETE_REFERENCE))
+        m_refs.clear();
+    TranslatorMessage msg(m_context, m_sources[0],
+                          m_comment, QString(), QString(), -1,
+                          m_translations, m_type, isPlural);
+    msg.setId(m_id);
+    msg.setReferences(m_refs);
+    msg.setOldComment(m_oldComment);
+    msg.setExtraComment(m_extraComment);
+    msg.setTranslatorComment(m_translatorComment);
+    if (m_sources.count() > 1 && m_sources[1] != m_sources[0])
+        m_extra.insert(QLatin1String("po-msgid_plural"), m_sources[1]);
+    if (!m_oldSources.isEmpty()) {
+        if (!m_oldSources[0].isEmpty())
+            msg.setOldSourceText(m_oldSources[0]);
+        if (m_oldSources.count() > 1 && m_oldSources[1] != m_oldSources[0])
+            m_extra.insert(QLatin1String("po-old_msgid_plural"), m_oldSources[1]);
+    }
+    msg.setExtras(m_extra);
+    m_translator.append(msg);
+
+    m_id.clear();
+    m_sources.clear();
+    m_oldSources.clear();
+    m_translations.clear();
+    m_comment.clear();
+    m_oldComment.clear();
+    m_extraComment.clear();
+    m_translatorComment.clear();
+    m_extra.clear();
+    m_refs.clear();
+    m_type = TranslatorMessage::Finished;
+    return true;
+}
+
+bool XLIFFHandler::fatalError(const QXmlParseException &exception)
+{
+    QString msg;
+    msg.sprintf("XML error: Parse error at line %d, column %d (%s).\n",
+                 exception.lineNumber(), exception.columnNumber(),
+                 exception.message().toLatin1().data() );
+    m_cd.appendError(msg);
+    return false;
+}
+
+bool loadXLIFF(Translator &translator, QIODevice &dev, ConversionData &cd)
+{
+    QXmlInputSource in(&dev);
+    QXmlSimpleReader reader;
+    XLIFFHandler hand(translator, cd);
+    reader.setContentHandler(&hand);
+    reader.setErrorHandler(&hand);
+    return reader.parse(in);
+}
+
+bool saveXLIFF(const Translator &translator, QIODevice &dev, ConversionData &cd)
+{
+    bool ok = true;
+    int indent = 0;
+
+    QTextStream ts(&dev);
+    ts.setCodec(QTextCodec::codecForName("UTF-8"));
+
+    QStringList dtgs = cd.dropTags();
+    dtgs << QLatin1String("po-(old_)?msgid_plural");
+    QRegExp drops(dtgs.join(QLatin1String("|")));
+
+    QHash<QString, QHash<QString, QList<TranslatorMessage> > > messageOrder;
+    QHash<QString, QList<QString> > contextOrder;
+    QList<QString> fileOrder;
+    foreach (const TranslatorMessage &msg, translator.messages()) {
+        QString fn = msg.fileName();
+        if (fn.isEmpty() && msg.type() == TranslatorMessage::Obsolete)
+            fn = QLatin1String(MAGIC_OBSOLETE_REFERENCE);
+        QHash<QString, QList<TranslatorMessage> > &file = messageOrder[fn];
+        if (file.isEmpty())
+            fileOrder.append(fn);
+        QList<TranslatorMessage> &context = file[msg.context()];
+        if (context.isEmpty())
+            contextOrder[fn].append(msg.context());
+        context.append(msg);
+    }
+
+    ts.setFieldAlignment(QTextStream::AlignRight);
+    ts << "<?xml version=\"1.0\"";
+    ts << " encoding=\"utf-8\"?>\n";
+    ts << "<xliff version=\"1.2\" xmlns=\"" << XLIFF12namespaceURI
+       << "\" xmlns:trolltech=\"" << TrollTsNamespaceURI << "\">\n";
+    ++indent;
+    writeExtras(ts, indent, translator.extras(), drops);
+    QString sourceLanguageCode = translator.sourceLanguageCode();
+    if (sourceLanguageCode.isEmpty() || sourceLanguageCode == QLatin1String("C"))
+        sourceLanguageCode = QLatin1String("en");
+    else
+        sourceLanguageCode.replace(QLatin1Char('_'), QLatin1Char('-'));
+    QString languageCode = translator.languageCode();
+    languageCode.replace(QLatin1Char('_'), QLatin1Char('-'));
+    foreach (const QString &fn, fileOrder) {
+        writeIndent(ts, indent);
+        ts << "<file original=\"" << fn << "\""
+            << " datatype=\"" << dataType(messageOrder[fn].begin()->first()) << "\""
+            << " source-language=\"" << sourceLanguageCode.toLatin1() << "\""
+            << " target-language=\"" << languageCode.toLatin1() << "\""
+            << "><body>\n";
+        ++indent;
+
+        foreach (const QString &ctx, contextOrder[fn]) {
+            if (!ctx.isEmpty()) {
+                writeIndent(ts, indent);
+                ts << "<group restype=\"" << restypeContext << "\""
+                    << " resname=\"" << protect(ctx) << "\">\n";
+                ++indent;
+            }
+
+            foreach (const TranslatorMessage &msg, messageOrder[fn][ctx])
+                writeMessage(ts, msg, drops, indent);
+
+            if (!ctx.isEmpty()) {
+                --indent;
+                writeIndent(ts, indent);
+                ts << "</group>\n";
+            }
+        }
+
+        --indent;
+        writeIndent(ts, indent);
+        ts << "</body></file>\n";
+    }
+    --indent;
+    writeIndent(ts, indent);
+    ts << "</xliff>\n";
+
+    return ok;
+}
+
+int initXLIFF()
+{
+    Translator::FileFormat format;
+    format.extension = QLatin1String("xlf");
+    format.description = QObject::tr("XLIFF localization files");
+    format.fileType = Translator::FileFormat::TranslationSource;
+    format.priority = 1;
+    format.loader = &loadXLIFF;
+    format.saver = &saveXLIFF;
+    Translator::registerFileFormat(format);
+    return 1;
+}
+
+Q_CONSTRUCTOR_FUNCTION(initXLIFF)
+
+QT_END_NAMESPACE