profileevaluator.cpp 81.3 KB
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/***************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact:  Qt Software Information (qt-info@nokia.com)
**
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**
** Non-Open Source Usage
**
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** Licensees may use this file in accordance with the Qt Beta Version
** License Agreement, Agreement version 2.2 provided with the Software or,
** alternatively, in accordance with the terms contained in a written
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** agreement between you and Nokia.
**
** GNU General Public License Usage
**
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** Alternatively, this file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the packaging
** of this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
**
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.
**
** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt GPL Exception
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** version 1.3, included in the file GPL_EXCEPTION.txt in this package.
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**
***************************************************************************/
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#include "profileevaluator.h"
#include "proparserutils.h"
#include "proitems.h"

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#include <utils/qtcassert.h>

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#include <QtCore/QByteArray>
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#include <QtCore/QDateTime>
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#include <QtCore/QDebug>
#include <QtCore/QDir>
#include <QtCore/QFile>
#include <QtCore/QFileInfo>
#include <QtCore/QList>
#include <QtCore/QRegExp>
#include <QtCore/QSet>
#include <QtCore/QStack>
#include <QtCore/QString>
#include <QtCore/QStringList>
#include <QtCore/QTextStream>

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#ifdef Q_OS_UNIX
#include <unistd.h>
#include <sys/utsname.h>
#elif defined(Q_OS_WIN32)
#include <Windows.h>
#endif
#include <stdio.h>
#include <stdlib.h>

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#ifdef Q_OS_WIN32
#define QT_POPEN _popen
#else
#define QT_POPEN popen
#endif

QT_BEGIN_NAMESPACE

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///////////////////////////////////////////////////////////////////////
//
// Option
//
///////////////////////////////////////////////////////////////////////

QString
Option::fixString(QString string, uchar flags)
{
    // XXX Ripped out caching, so this will be slow. Should not matter for current uses.

    //fix the environment variables
    if (flags & Option::FixEnvVars) {
        int rep;
        QRegExp reg_variableName(QLatin1String("\\$\\(.*\\)"));
        reg_variableName.setMinimal(true);
        while ((rep = reg_variableName.indexIn(string)) != -1)
            string.replace(rep, reg_variableName.matchedLength(),
                           QString::fromLocal8Bit(qgetenv(string.mid(rep + 2, reg_variableName.matchedLength() - 3).toLatin1().constData()).constData()));
    }

    //canonicalize it (and treat as a path)
    if (flags & Option::FixPathCanonicalize) {
#if 0
        string = QFileInfo(string).canonicalFilePath();
#endif
        string = QDir::cleanPath(string);
    }

    if (string.length() > 2 && string[0].isLetter() && string[1] == QLatin1Char(':'))
        string[0] = string[0].toLower();

    //fix separators
    Q_ASSERT(!((flags & Option::FixPathToLocalSeparators) && (flags & Option::FixPathToTargetSeparators)));
    if (flags & Option::FixPathToLocalSeparators) {
#if defined(Q_OS_WIN32)
        string = string.replace(QLatin1Char('/'), QLatin1Char('\\'));
#else
        string = string.replace(QLatin1Char('\\'), QLatin1Char('/'));
#endif
    } else if (flags & Option::FixPathToTargetSeparators) {
        string = string.replace(QLatin1Char('/'), Option::dir_sep)
                       .replace(QLatin1Char('\\'), Option::dir_sep);
    }

    if ((string.startsWith(QLatin1Char('"')) && string.endsWith(QLatin1Char('"'))) ||
        (string.startsWith(QLatin1Char('\'')) && string.endsWith(QLatin1Char('\''))))
        string = string.mid(1, string.length() - 2);

    return string;
}

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///////////////////////////////////////////////////////////////////////
//
// ProFileEvaluator::Private
//
///////////////////////////////////////////////////////////////////////

class ProFileEvaluator::Private : public AbstractProItemVisitor
{
public:
    Private(ProFileEvaluator *q_);

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    ProFileEvaluator *q;
    int m_lineNo;                                   // Error reporting
    bool m_verbose;

    /////////////// Reading pro file

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    bool read(ProFile *pro);

    ProBlock *currentBlock();
    void updateItem();
    bool parseLine(const QString &line);
    void insertVariable(const QString &line, int *i);
    void insertOperator(const char op);
    void insertComment(const QString &comment);
    void enterScope(bool multiLine);
    void leaveScope();
    void finalizeBlock();

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    QStack<ProBlock *> m_blockstack;
    ProBlock *m_block;

    ProItem *m_commentItem;
    QString m_proitem;
    QString m_pendingComment;
    bool m_syntaxError;
    bool m_contNextLine;

    /////////////// Evaluating pro file contents

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    // implementation of AbstractProItemVisitor
    bool visitBeginProBlock(ProBlock *block);
    bool visitEndProBlock(ProBlock *block);
    bool visitBeginProVariable(ProVariable *variable);
    bool visitEndProVariable(ProVariable *variable);
    bool visitBeginProFile(ProFile *value);
    bool visitEndProFile(ProFile *value);
    bool visitProValue(ProValue *value);
    bool visitProFunction(ProFunction *function);
    bool visitProOperator(ProOperator *oper);
    bool visitProCondition(ProCondition *condition);

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    QStringList valuesDirect(const QString &variableName) const { return m_valuemap[variableName]; }
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    QStringList values(const QString &variableName) const;
    QStringList values(const QString &variableName, const ProFile *pro) const;
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    QStringList values(const QString &variableName, const QHash<QString, QStringList> &place,
                       const ProFile *pro) const;
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    QString propertyValue(const QString &val) const;

    bool isActiveConfig(const QString &config, bool regex = false);
    QStringList expandPattern(const QString &pattern);
    void expandPatternHelper(const QString &relName, const QString &absName,
        QStringList &sources_out);
    QStringList expandVariableReferences(const QString &value);
    QStringList evaluateExpandFunction(const QString &function, const QString &arguments);
    QString format(const char *format) const;

    QString currentFileName() const;
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    QString currentDirectory() const;
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    ProFile *currentProFile() const;

    bool evaluateConditionalFunction(const QString &function, const QString &arguments, bool *result);
    bool evaluateFile(const QString &fileName, bool *result);
    bool evaluateFeatureFile(const QString &fileName, bool *result);

    QStringList qmakeFeaturePaths();

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    enum { ConditionTrue, ConditionFalse, ConditionElse };
    int m_condition;
    int m_prevCondition;
    bool m_updateCondition;
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    bool m_invertNext;
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    int m_skipLevel;
    bool m_cumulative;
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    QString m_lastVarName;
    ProVariable::VariableOperator m_variableOperator;
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    QString m_origfile;
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    QString m_oldPath;                              // To restore the current path to the path
    QStack<ProFile*> m_profileStack;                // To handle 'include(a.pri), so we can track back to 'a.pro' when finished with 'a.pri'

    QHash<QString, QStringList> m_valuemap;         // VariableName must be us-ascii, the content however can be non-us-ascii.
    QHash<const ProFile*, QHash<QString, QStringList> > m_filevaluemap; // Variables per include file
    QHash<QString, QString> m_properties;
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    QString m_outputDir;
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    int m_prevLineNo;                               // Checking whether we're assigning the same TARGET
    ProFile *m_prevProFile;                         // See m_prevLineNo
};

ProFileEvaluator::Private::Private(ProFileEvaluator *q_)
  : q(q_)
{
    m_prevLineNo = 0;
    m_prevProFile = 0;
    m_verbose = true;
    m_block = 0;
    m_commentItem = 0;
    m_syntaxError = 0;
    m_lineNo = 0;
    m_contNextLine = false;
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    m_cumulative = true;
    m_updateCondition = false;
    m_condition = ConditionFalse;
    m_invertNext = false;
    m_skipLevel = 0;
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}

bool ProFileEvaluator::Private::read(ProFile *pro)
{
    QFile file(pro->fileName());
    if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
        q->errorMessage(format("%1 not readable.").arg(pro->fileName()));
        return false;
    }

    m_syntaxError = false;
    m_lineNo = 1;
    m_blockstack.push(pro);

    QTextStream ts(&file);
    while (!ts.atEnd()) {
        QString line = ts.readLine();
        if (!parseLine(line)) {
            q->errorMessage(format(".pro parse failure."));
            return false;
        }
        ++m_lineNo;
    }
    return true;
}

bool ProFileEvaluator::Private::parseLine(const QString &line0)
{
    if (m_blockstack.isEmpty())
        return false;

    ushort quote = 0;
    int parens = 0;
    bool contNextLine = false;
    QString line = line0.simplified();

    for (int i = 0; !m_syntaxError && i < line.length(); ++i) {
        ushort c = line.at(i).unicode();
        if (quote && c == quote)
            quote = 0;
        else if (c == '(')
            ++parens;
        else if (c == ')')
            --parens;
        else if (c == '"' && (i == 0 || line.at(i - 1).unicode() != '\\'))
            quote = c;
        else if (!parens && !quote) {
            if (c == '#') {
                insertComment(line.mid(i + 1));
                contNextLine = m_contNextLine;
                break;
            }
            if (c == '\\' && i >= line.count() - 1) {
                updateItem();
                contNextLine = true;
                continue;
            }
            if (m_block && (m_block->blockKind() & ProBlock::VariableKind)) {
                if (c == ' ')
                    updateItem();
                else
                    m_proitem += c;
                continue;
            }
            if (c == ':') {
                enterScope(false);
                continue;
            }
            if (c == '{') {
                enterScope(true);
                continue;
            }
            if (c == '}') {
                leaveScope();
                continue;
            }
            if (c == '=') {
                insertVariable(line, &i);
                continue;
            }
            if (c == '|' || c == '!') {
                insertOperator(c);
                continue;
            }
        }

        m_proitem += c;
    }
    m_contNextLine = contNextLine;

    if (!m_syntaxError) {
        updateItem();
        if (!m_contNextLine)
            finalizeBlock();
    }
    return !m_syntaxError;
}

void ProFileEvaluator::Private::finalizeBlock()
{
    if (m_blockstack.isEmpty()) {
        m_syntaxError = true;
    } else {
        if (m_blockstack.top()->blockKind() & ProBlock::SingleLine)
            leaveScope();
        m_block = 0;
        m_commentItem = 0;
    }
}

void ProFileEvaluator::Private::insertVariable(const QString &line, int *i)
{
    ProVariable::VariableOperator opkind;

    switch (m_proitem.at(m_proitem.length() - 1).unicode()) {
        case '+':
            m_proitem.chop(1);
            opkind = ProVariable::AddOperator;
            break;
        case '-':
            m_proitem.chop(1);
            opkind = ProVariable::RemoveOperator;
            break;
        case '*':
            m_proitem.chop(1);
            opkind = ProVariable::UniqueAddOperator;
            break;
        case '~':
            m_proitem.chop(1);
            opkind = ProVariable::ReplaceOperator;
            break;
        default:
            opkind = ProVariable::SetOperator;
    }

    ProBlock *block = m_blockstack.top();
    m_proitem = m_proitem.trimmed();
    ProVariable *variable = new ProVariable(m_proitem, block);
    variable->setLineNumber(m_lineNo);
    variable->setVariableOperator(opkind);
    block->appendItem(variable);
    m_block = variable;

    if (!m_pendingComment.isEmpty()) {
        m_block->setComment(m_pendingComment);
        m_pendingComment.clear();
    }
    m_commentItem = variable;

    m_proitem.clear();

    if (opkind == ProVariable::ReplaceOperator) {
        // skip util end of line or comment
        while (1) {
            ++(*i);

            // end of line?
            if (*i >= line.count())
                break;

            // comment?
            if (line.at(*i).unicode() == '#') {
                --(*i);
                break;
            }

            m_proitem += line.at(*i);
        }
        m_proitem = m_proitem.trimmed();
    }
}

void ProFileEvaluator::Private::insertOperator(const char op)
{
    updateItem();

    ProOperator::OperatorKind opkind;
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    switch (op) {
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        case '!':
            opkind = ProOperator::NotOperator;
            break;
        case '|':
            opkind = ProOperator::OrOperator;
            break;
        default:
            opkind = ProOperator::OrOperator;
    }

    ProBlock * const block = currentBlock();
    ProOperator * const proOp = new ProOperator(opkind);
    proOp->setLineNumber(m_lineNo);
    block->appendItem(proOp);
    m_commentItem = proOp;
}

void ProFileEvaluator::Private::insertComment(const QString &comment)
{
    updateItem();

    QString strComment;
    if (!m_commentItem)
        strComment = m_pendingComment;
    else
        strComment = m_commentItem->comment();

    if (strComment.isEmpty())
        strComment = comment;
    else {
        strComment += QLatin1Char('\n');
        strComment += comment.trimmed();
    }

    strComment = strComment.trimmed();

    if (!m_commentItem)
        m_pendingComment = strComment;
    else
        m_commentItem->setComment(strComment);
}

void ProFileEvaluator::Private::enterScope(bool multiLine)
{
    updateItem();

    ProBlock *parent = currentBlock();
    ProBlock *block = new ProBlock(parent);
    block->setLineNumber(m_lineNo);
    parent->setBlockKind(ProBlock::ScopeKind);

    parent->appendItem(block);

    if (multiLine)
        block->setBlockKind(ProBlock::ScopeContentsKind);
    else
        block->setBlockKind(ProBlock::ScopeContentsKind|ProBlock::SingleLine);

    m_blockstack.push(block);
    m_block = 0;
}

void ProFileEvaluator::Private::leaveScope()
{
    updateItem();
    m_blockstack.pop();
    finalizeBlock();
}

ProBlock *ProFileEvaluator::Private::currentBlock()
{
    if (m_block)
        return m_block;

    ProBlock *parent = m_blockstack.top();
    m_block = new ProBlock(parent);
    m_block->setLineNumber(m_lineNo);
    parent->appendItem(m_block);

    if (!m_pendingComment.isEmpty()) {
        m_block->setComment(m_pendingComment);
        m_pendingComment.clear();
    }

    m_commentItem = m_block;

    return m_block;
}

void ProFileEvaluator::Private::updateItem()
{
    m_proitem = m_proitem.trimmed();
    if (m_proitem.isEmpty())
        return;

    ProBlock *block = currentBlock();
    if (block->blockKind() & ProBlock::VariableKind) {
        m_commentItem = new ProValue(m_proitem, static_cast<ProVariable*>(block));
    } else if (m_proitem.endsWith(QLatin1Char(')'))) {
        m_commentItem = new ProFunction(m_proitem);
    } else {
        m_commentItem = new ProCondition(m_proitem);
    }
    m_commentItem->setLineNumber(m_lineNo);
    block->appendItem(m_commentItem);

    m_proitem.clear();
}


bool ProFileEvaluator::Private::visitBeginProBlock(ProBlock *block)
{
    if (block->blockKind() == ProBlock::ScopeKind) {
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        m_updateCondition = true;
        if (!m_skipLevel) {
            m_prevCondition = m_condition;
            m_condition = ConditionFalse;
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        } else {
            Q_ASSERT(m_condition != ConditionTrue);
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        }
    } else if (block->blockKind() & ProBlock::ScopeContentsKind) {
        m_updateCondition = false;
        if (m_condition != ConditionTrue)
            ++m_skipLevel;
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        else
            Q_ASSERT(!m_skipLevel);
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    }
    return true;
}

bool ProFileEvaluator::Private::visitEndProBlock(ProBlock *block)
{
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    if (block->blockKind() & ProBlock::ScopeContentsKind) {
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        if (m_skipLevel) {
            Q_ASSERT(m_condition != ConditionTrue);
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            --m_skipLevel;
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        } else {
            // Conditionals contained inside this block may have changed the state.
            // So we reset it here to make an else following us do the right thing.
            m_condition = ConditionTrue;
        }
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    }
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    return true;
}

bool ProFileEvaluator::Private::visitBeginProVariable(ProVariable *variable)
{
    m_lastVarName = variable->variable();
    m_variableOperator = variable->variableOperator();
    return true;
}

bool ProFileEvaluator::Private::visitEndProVariable(ProVariable *variable)
{
    Q_UNUSED(variable);
    m_lastVarName.clear();
    return true;
}

bool ProFileEvaluator::Private::visitProOperator(ProOperator *oper)
{
    m_invertNext = (oper->operatorKind() == ProOperator::NotOperator);
    return true;
}

bool ProFileEvaluator::Private::visitProCondition(ProCondition *cond)
{
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    if (!m_skipLevel) {
        if (cond->text().toLower() == QLatin1String("else")) {
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            // The state ConditionElse makes sure that subsequential elses are ignored.
            // That's braindead, but qmake is like that.
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            if (m_prevCondition == ConditionTrue)
                m_condition = ConditionElse;
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            else if (m_prevCondition == ConditionFalse)
                m_condition = ConditionTrue;
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        } else if (m_condition == ConditionFalse) {
            if (isActiveConfig(cond->text(), true) ^ m_invertNext)
                m_condition = ConditionTrue;
        }
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    }
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    m_invertNext = false;
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    return true;
}

bool ProFileEvaluator::Private::visitBeginProFile(ProFile * pro)
{
    PRE(pro);
    bool ok = true;
    m_lineNo = pro->lineNumber();

    if (m_origfile.isEmpty())
        m_origfile = pro->fileName();
    if (m_oldPath.isEmpty()) {
        // change the working directory for the initial profile we visit, since
        // that is *the* profile. All the other times we reach this function will be due to
        // include(file) or load(file)

        m_oldPath = QDir::currentPath();

        m_profileStack.push(pro);

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        const QString mkspecDirectory = propertyValue(QLatin1String("QMAKE_MKSPECS"));
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        if (!mkspecDirectory.isEmpty()) {
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            bool cumulative = m_cumulative;
            m_cumulative = false;
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            // This is what qmake does, everything set in the mkspec is also set
            // But this also creates a lot of problems
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            evaluateFile(mkspecDirectory + QLatin1String("/default/qmake.conf"), &ok);
            evaluateFile(mkspecDirectory + QLatin1String("/features/default_pre.prf"), &ok);
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            m_cumulative = cumulative;
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        }

        QString fn = pro->fileName();
        ok = QDir::setCurrent(QFileInfo(fn).absolutePath());
    }

    return ok;
}

bool ProFileEvaluator::Private::visitEndProFile(ProFile * pro)
{
    PRE(pro);
    bool ok = true;
    m_lineNo = pro->lineNumber();
    if (m_profileStack.count() == 1 && !m_oldPath.isEmpty()) {
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        const QString &mkspecDirectory = propertyValue(QLatin1String("QMAKE_MKSPECS"));
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        if (!mkspecDirectory.isEmpty()) {
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            bool cumulative = m_cumulative;
            m_cumulative = false;

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            evaluateFile(mkspecDirectory + QLatin1String("/features/default_post.prf"), &ok);
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            QSet<QString> processed;
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            forever {
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                bool finished = true;
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                QStringList configs = valuesDirect(QLatin1String("CONFIG"));
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                for (int i = configs.size() - 1; i >= 0; --i) {
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                    const QString config = configs[i].toLower();
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                    if (!processed.contains(config)) {
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                        processed.insert(config);
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                        evaluateFile(mkspecDirectory + QLatin1String("/features/")
                                     + config + QLatin1String(".prf"), &ok);
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                        if (ok) {
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                            finished = false;
                            break;
                        }
                    }
                }
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                if (finished)
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                    break;
            }
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            m_cumulative = cumulative;
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        }

        m_profileStack.pop();
        ok = QDir::setCurrent(m_oldPath);
    }
    return ok;
}

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static void replaceInList(QStringList *varlist,
        const QRegExp &regexp, const QString &replace, bool global)
{
    for (QStringList::Iterator varit = varlist->begin(); varit != varlist->end(); ) {
        if ((*varit).contains(regexp)) {
            (*varit).replace(regexp, replace);
            if ((*varit).isEmpty())
                varit = varlist->erase(varit);
            else
                ++varit;
            if(!global)
                break;
        } else {
            ++varit;
        }
    }
}

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bool ProFileEvaluator::Private::visitProValue(ProValue *value)
{
    PRE(value);
    m_lineNo = value->lineNumber();
    QString val = value->value();

    QString varName = m_lastVarName;

    QStringList v = expandVariableReferences(val);

    // Since qmake combines different values for the TARGET variable, we join
    // TARGET values that are on the same line. We can't do this later with all
    // values because this parser isn't scope-aware, so we'd risk joining
    // scope-specific targets together.
    if (varName == QLatin1String("TARGET")
            && m_lineNo == m_prevLineNo
            && currentProFile() == m_prevProFile) {
        QStringList targets = m_valuemap.value(QLatin1String("TARGET"));
        m_valuemap.remove(QLatin1String("TARGET"));
        QStringList lastTarget(targets.takeLast());
        lastTarget << v.join(QLatin1String(" "));
        targets.push_back(lastTarget.join(QLatin1String(" ")));
        v = targets;
    }
    m_prevLineNo = m_lineNo;
    m_prevProFile = currentProFile();

    // The following two blocks fix bug 180128 by making all "interesting"
    // file name absolute in each .pro file, not just the top most one
    if (varName == QLatin1String("SOURCES")
            || varName == QLatin1String("HEADERS")
            || varName == QLatin1String("INTERFACES")
            || varName == QLatin1String("FORMS")
            || varName == QLatin1String("FORMS3")
            || varName == QLatin1String("RESOURCES")) {
        // matches only existent files, expand certain(?) patterns
        QStringList vv;
        for (int i = v.count(); --i >= 0; )
            vv << expandPattern(v[i]);
        v = vv;
    }

    if (varName == QLatin1String("TRANSLATIONS")) {
        // also matches non-existent files, but does not expand pattern
        QString dir = QFileInfo(currentFileName()).absolutePath();
        dir += QLatin1Char('/');
        for (int i = v.count(); --i >= 0; )
            v[i] = QFileInfo(dir, v[i]).absoluteFilePath();
    }

    switch (m_variableOperator) {
        case ProVariable::SetOperator:          // =
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            if (!m_cumulative) {
                if (!m_skipLevel) {
                    m_valuemap[varName] = v;
                    m_filevaluemap[currentProFile()][varName] = v;
                }
            } else {
                // We are greedy for values.
                m_valuemap[varName] += v;
                m_filevaluemap[currentProFile()][varName] += v;
            }
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            break;
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        case ProVariable::UniqueAddOperator:    // *=
            if (!m_skipLevel || m_cumulative) {
                insertUnique(&m_valuemap, varName, v);
                insertUnique(&m_filevaluemap[currentProFile()], varName, v);
            }
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            break;
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        case ProVariable::AddOperator:          // +=
            if (!m_skipLevel || m_cumulative) {
                m_valuemap[varName] += v;
                m_filevaluemap[currentProFile()][varName] += v;
            }
            break;
        case ProVariable::RemoveOperator:       // -=
            if (!m_cumulative) {
                if (!m_skipLevel) {
                    removeEach(&m_valuemap, varName, v);
                    removeEach(&m_filevaluemap[currentProFile()], varName, v);
                }
            } else {
                // We are stingy with our values, too.
            }
            break;
        case ProVariable::ReplaceOperator:      // ~=
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            {
                // DEFINES ~= s/a/b/?[gqi]

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                // FIXME: qmake variable-expands val first.
                if (val.length() < 4 || val[0] != QLatin1Char('s')) {
                    q->logMessage(format("the ~= operator can handle only the s/// function."));
                    return false;
                }
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                QChar sep = val.at(1);
                QStringList func = val.split(sep);
                if (func.count() < 3 || func.count() > 4) {
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                    q->logMessage(format("the s/// function expects 3 or 4 arguments."));
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                    return false;
                }

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                bool global = false, quote = false, case_sense = false;
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                if (func.count() == 4) {
                    global = func[3].indexOf(QLatin1Char('g')) != -1;
                    case_sense = func[3].indexOf(QLatin1Char('i')) == -1;
                    quote = func[3].indexOf(QLatin1Char('q')) != -1;
                }
                QString pattern = func[1];
                QString replace = func[2];
                if (quote)
                    pattern = QRegExp::escape(pattern);

                QRegExp regexp(pattern, case_sense ? Qt::CaseSensitive : Qt::CaseInsensitive);

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                if (!m_skipLevel || m_cumulative) {
                    // We could make a union of modified and unmodified values,
                    // but this will break just as much as it fixes, so leave it as is.
                    replaceInList(&m_valuemap[varName], regexp, replace, global);
                    replaceInList(&m_filevaluemap[currentProFile()][varName], regexp, replace, global);
                }
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            }
            break;

    }
    return true;
}

bool ProFileEvaluator::Private::visitProFunction(ProFunction *func)
{
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    if (!m_updateCondition || m_condition == ConditionFalse) {
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        QString text = func->text();
        int lparen = text.indexOf(QLatin1Char('('));
        int rparen = text.lastIndexOf(QLatin1Char(')'));
        QTC_ASSERT(lparen < rparen, return false);
        QString arguments = text.mid(lparen + 1, rparen - lparen - 1);
        QString funcName = text.left(lparen);
        m_lineNo = func->lineNumber();
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        bool result;
        if (!evaluateConditionalFunction(funcName.trimmed(), arguments, &result)) {
            m_invertNext = false;
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            return false;
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        }
        if (!m_skipLevel && (result ^ m_invertNext))
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            m_condition = ConditionTrue;
    }
    m_invertNext = false;
    return true;
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}


QStringList ProFileEvaluator::Private::qmakeFeaturePaths()
{
    QStringList concat;
    {
        const QString base_concat = QDir::separator() + QString(QLatin1String("features"));
        concat << base_concat + QDir::separator() + QLatin1String("mac");
        concat << base_concat + QDir::separator() + QLatin1String("macx");
        concat << base_concat + QDir::separator() + QLatin1String("unix");
        concat << base_concat + QDir::separator() + QLatin1String("win32");
        concat << base_concat + QDir::separator() + QLatin1String("mac9");
        concat << base_concat + QDir::separator() + QLatin1String("qnx6");
        concat << base_concat;
    }
    const QString mkspecs_concat = QDir::separator() + QString(QLatin1String("mkspecs"));
    QStringList feature_roots;
    QByteArray mkspec_path = qgetenv("QMAKEFEATURES");
    if (!mkspec_path.isNull())
        feature_roots += splitPathList(QString::fromLocal8Bit(mkspec_path));
    /*
    if (prop)
        feature_roots += splitPathList(prop->value("QMAKEFEATURES"));
    if (!Option::mkfile::cachefile.isEmpty()) {
        QString path;
        int last_slash = Option::mkfile::cachefile.lastIndexOf(Option::dir_sep);
        if (last_slash != -1)
            path = Option::fixPathToLocalOS(Option::mkfile::cachefile.left(last_slash));
        foreach (const QString &concat_it, concat)
            feature_roots << (path + concat_it);
    }
    */

    QByteArray qmakepath = qgetenv("QMAKEPATH");
    if (!qmakepath.isNull()) {
        const QStringList lst = splitPathList(QString::fromLocal8Bit(qmakepath));
        foreach (const QString &item, lst) {
            foreach (const QString &concat_it, concat)
                feature_roots << (item + mkspecs_concat + concat_it);
        }
    }
    //if (!Option::mkfile::qmakespec.isEmpty())
    //    feature_roots << Option::mkfile::qmakespec + QDir::separator() + "features";
    //if (!Option::mkfile::qmakespec.isEmpty()) {
    //    QFileInfo specfi(Option::mkfile::qmakespec);
    //    QDir specdir(specfi.absoluteFilePath());
    //    while (!specdir.isRoot()) {
    //        if (!specdir.cdUp() || specdir.isRoot())
    //            break;
    //        if (QFile::exists(specdir.path() + QDir::separator() + "features")) {
    //            foreach (const QString &concat_it, concat) 
    //                feature_roots << (specdir.path() + concat_it);
    //            break;
    //        }
    //    }
    //}
    foreach (const QString &concat_it, concat)
        feature_roots << (propertyValue(QLatin1String("QT_INSTALL_PREFIX")) +
                          mkspecs_concat + concat_it);
    foreach (const QString &concat_it, concat)
        feature_roots << (propertyValue(QLatin1String("QT_INSTALL_DATA")) +
                          mkspecs_concat + concat_it);
    return feature_roots;
}

QString ProFileEvaluator::Private::propertyValue(const QString &name) const
{
    if (m_properties.contains(name))
        return m_properties.value(name);
    if (name == QLatin1String("QT_INSTALL_PREFIX"))
        return QLibraryInfo::location(QLibraryInfo::PrefixPath);
    if (name == QLatin1String("QT_INSTALL_DATA"))
        return QLibraryInfo::location(QLibraryInfo::DataPath);
    if (name == QLatin1String("QT_INSTALL_DOCS"))
        return QLibraryInfo::location(QLibraryInfo::DocumentationPath);
    if (name == QLatin1String("QT_INSTALL_HEADERS"))
        return QLibraryInfo::location(QLibraryInfo::HeadersPath);
    if (name == QLatin1String("QT_INSTALL_LIBS"))
        return QLibraryInfo::location(QLibraryInfo::LibrariesPath);
    if (name == QLatin1String("QT_INSTALL_BINS"))
        return QLibraryInfo::location(QLibraryInfo::BinariesPath);
    if (name == QLatin1String("QT_INSTALL_PLUGINS"))
        return QLibraryInfo::location(QLibraryInfo::PluginsPath);
    if (name == QLatin1String("QT_INSTALL_TRANSLATIONS"))
        return QLibraryInfo::location(QLibraryInfo::TranslationsPath);
    if (name == QLatin1String("QT_INSTALL_CONFIGURATION"))
        return QLibraryInfo::location(QLibraryInfo::SettingsPath);
    if (name == QLatin1String("QT_INSTALL_EXAMPLES"))
        return QLibraryInfo::location(QLibraryInfo::ExamplesPath);
    if (name == QLatin1String("QT_INSTALL_DEMOS"))
        return QLibraryInfo::location(QLibraryInfo::DemosPath);
    if (name == QLatin1String("QMAKE_MKSPECS"))
        return qmake_mkspec_paths().join(Option::dirlist_sep);
    if (name == QLatin1String("QMAKE_VERSION"))
        return QLatin1String("1.0");        //### FIXME
        //return qmake_version();
#ifdef QT_VERSION_STR
    if (name == QLatin1String("QT_VERSION"))
        return QLatin1String(QT_VERSION_STR);
#endif
    return QLatin1String("UNKNOWN");        //###
}

ProFile *ProFileEvaluator::Private::currentProFile() const
{
    if (m_profileStack.count() > 0)
        return m_profileStack.top();
    return 0;
}

QString ProFileEvaluator::Private::currentFileName() const
{
    ProFile *pro = currentProFile();
    if (pro)
        return pro->fileName();
    return QString();
}

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QString ProFileEvaluator::Private::currentDirectory() const
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{
    ProFile *cur = m_profileStack.top();
    QFileInfo fi(cur->fileName());
    return fi.absolutePath();
}

QStringList ProFileEvaluator::Private::expandVariableReferences(const QString &str)
{
    bool fOK;
    bool *ok = &fOK;
    QStringList ret;
    if (ok)
        *ok = true;
    if (str.isEmpty())
        return ret;

    const ushort LSQUARE = '[';
    const ushort RSQUARE = ']';
    const ushort LCURLY = '{';
    const ushort RCURLY = '}';
    const ushort LPAREN = '(';
    const ushort RPAREN = ')';
    const ushort DOLLAR = '$';
    const ushort BACKSLASH = '\\';
    const ushort UNDERSCORE = '_';
    const ushort DOT = '.';
    const ushort SPACE = ' ';
    const ushort TAB = '\t';

    const QChar *str_data = str.data();
    const int str_len = str.length();

    ushort term;
    QString var, args;

    int replaced = 0;
    QString current;
    for (int i = 0; i < str_len; ++i) {
        ushort c = str_data[i].unicode();
        const int start_var = i;
        if (c == BACKSLASH) {
            bool escape = false;
            const char *symbols = "[]{}()$\\";
            for (const char *s = symbols; *s; ++s) {
                if (str_data[i+1] == (ushort)*s) {
                    i++;
                    escape = true;
                    if (!(replaced++))
                        current = str.left(start_var);
                    current.append(str.at(i));
                    break;
                }
            }
            if (!escape && replaced)
                current.append(QChar(c));
            continue;
        }
        if (c == SPACE || c == TAB) {
            c = 0;
            if (!current.isEmpty()) {
                unquote(&current);
                ret.append(current);
                current.clear();
            }
        } else if (c == DOLLAR && str_len > i+2) {
            c = str_data[++i].unicode();
            if (c == DOLLAR) {
                term = 0;
                var.clear();
                args.clear();
                enum { VAR, ENVIRON, FUNCTION, PROPERTY } var_type = VAR;
                c = str_data[++i].unicode();
                if (c == LSQUARE) {
                    c = str_data[++i].unicode();
                    term = RSQUARE;
                    var_type = PROPERTY;
                } else if (c == LCURLY) {
                    c = str_data[++i].unicode();
                    var_type = VAR;
                    term = RCURLY;
                } else if (c == LPAREN) {
                    c = str_data[++i].unicode();
                    var_type = ENVIRON;
                    term = RPAREN;
                }
                while (1) {
                    if (!(c & (0xFF<<8)) &&
                       c != DOT && c != UNDERSCORE &&
                       (c < 'a' || c > 'z') && (c < 'A' || c > 'Z') && (c < '0' || c > '9'))
                        break;
                    var.append(QChar(c));
                    if (++i == str_len)
                        break;
                    c = str_data[i].unicode();
                }
                if (var_type == VAR && c == LPAREN) {
                    var_type = FUNCTION;
                    int depth = 0;
                    while (1) {
                        if (++i == str_len)
                            break;
                        c = str_data[i].unicode();
                        if (c == LPAREN) {
                            depth++;
                        } else if (c == RPAREN) {
                            if (!depth)
                                break;
                            --depth;
                        }
                        args.append(QChar(c));
                    }
                    if (i < str_len-1)
                        c = str_data[++i].unicode();
                    else
                        c = 0;
                }
                if (term) {
                    if (c != term) {
                        q->logMessage(format("Missing %1 terminator [found %2]")
                            .arg(QChar(term)).arg(QChar(c)));
                        if (ok)
                            *ok = false;
                        return QStringList();
                    }
                    c = 0;
                } else if (i > str_len-1) {
                    c = 0;
                }

                QStringList replacement;
                if (var_type == ENVIRON) {
                    replacement << QString::fromLocal8Bit(qgetenv(var.toLocal8Bit().constData()));
                } else if (var_type == PROPERTY) {
                    replacement << propertyValue(var);
                    //if (prop)
                    //    replacement = QStringList(prop->value(var));
                } else if (var_type == FUNCTION) {
                    replacement << evaluateExpandFunction(var, args);
                } else if (var_type == VAR) {
                    replacement += values(var);
                }
                if (!(replaced++) && start_var)
                    current = str.left(start_var);
                if (!replacement.isEmpty()) {
                    /* If a list is beteen two strings make sure it expands in such a way
                     * that the string to the left is prepended to the first string and
                     * the string to the right is appended to the last string, example:
                     *  LIST = a b c
                     *  V3 = x/$$LIST/f.cpp
                     *  message($$member(V3,0))     # Outputs "x/a"
                     *  message($$member(V3,1))     # Outputs "b"
                     *  message($$member(V3,2))     # Outputs "c/f.cpp"
                     */
                    current.append(replacement.at(0));
                    for (int i = 1; i < replacement.count(); ++i) {
                        unquote(&current);
                        ret.append(current);
                        current = replacement.at(i);
                    }
                }
            } else {
                if (replaced)
                    current.append(QLatin1Char('$'));
            }
        }
        if (replaced && c != 0)
            current.append(QChar(c));
    }
    if (!replaced) {
        current = str;
        unquote(&current);
        ret.append(current);
    } else if (!current.isEmpty()) {
        unquote(&current);
        ret.append(current);
    }
    return ret;
}

bool ProFileEvaluator::Private::isActiveConfig(const QString &config, bool regex)
{
    // magic types for easy flipping
    if (config == QLatin1String("true"))
        return true;
    if (config == QLatin1String("false"))
        return false;

    // mkspecs
    if ((Option::target_mode == Option::TARG_MACX_MODE
            || Option::target_mode == Option::TARG_QNX6_MODE
            || Option::target_mode == Option::TARG_UNIX_MODE)
          && config == QLatin1String("unix"))
        return true;
    if (Option::target_mode == Option::TARG_MACX_MODE && config == QLatin1String("macx"))
        return true;
    if (Option::target_mode == Option::TARG_QNX6_MODE && config == QLatin1String("qnx6"))
        return true;
    if (Option::target_mode == Option::TARG_MAC9_MODE && config == QLatin1String("mac9"))
        return true;
    if ((Option::target_mode == Option::TARG_MAC9_MODE
            || Option::target_mode == Option::TARG_MACX_MODE)
          && config == QLatin1String("mac"))
        return true;
    if (Option::target_mode == Option::TARG_WIN_MODE && config == QLatin1String("win32"))
        return true;

    QRegExp re(config, Qt::CaseSensitive, QRegExp::Wildcard);
    QString spec = Option::qmakespec;
    if ((regex && re.exactMatch(spec)) || (!regex && spec == config))
        return true;

    return false;
}

QStringList ProFileEvaluator::Private::evaluateExpandFunction(const QString &func, const QString &arguments)
{
    QStringList argumentsList = split_arg_list(arguments);
    QStringList args;
    for (int i = 0; i < argumentsList.count(); ++i)
        args += expandVariableReferences(argumentsList[i]);

    enum ExpandFunc { E_MEMBER=1, E_FIRST, E_LAST, E_CAT, E_FROMFILE, E_EVAL, E_LIST,
                      E_SPRINTF, E_JOIN, E_SPLIT, E_BASENAME, E_DIRNAME, E_SECTION,
                      E_FIND, E_SYSTEM, E_UNIQUE, E_QUOTE, E_ESCAPE_EXPAND,
                      E_UPPER, E_LOWER, E_FILES, E_PROMPT, E_RE_ESCAPE,
                      E_REPLACE };

    static QHash<QString, int> *expands = 0;
    if (!expands) {
        expands = new QHash<QString, int>;
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        expands->insert(QLatin1String("member"), E_MEMBER);
        expands->insert(QLatin1String("first"), E_FIRST);
        expands->insert(QLatin1String("last"), E_LAST);
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        expands->insert(QLatin1String("cat"), E_CAT);
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        expands->insert(QLatin1String("fromfile"), E_FROMFILE); // implementation disabled (see comment below)
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        expands->insert(QLatin1String("eval"), E_EVAL);
        expands->insert(QLatin1String("list"), E_LIST);
        expands->insert(QLatin1String("sprintf"), E_SPRINTF);
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        expands->insert(QLatin1String("join"), E_JOIN);
        expands->insert(QLatin1String("split"), E_SPLIT);
        expands->insert(QLatin1String("basename"), E_BASENAME);
        expands->insert(QLatin1String("dirname"), E_DIRNAME);
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        expands->insert(QLatin1String("section"), E_SECTION);
        expands->insert(QLatin1String("find"), E_FIND);
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        expands->insert(QLatin1String("system"), E_SYSTEM);
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        expands->insert(QLatin1String("unique"), E_UNIQUE);
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        expands->insert(QLatin1String("quote"), E_QUOTE);
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        expands->insert(QLatin1String("escape_expand"), E_ESCAPE_EXPAND);
        expands->insert(QLatin1String("upper"), E_UPPER);
        expands->insert(QLatin1String("lower"), E_LOWER);
        expands->insert(QLatin1String("re_escape"), E_RE_ESCAPE);
        expands->insert(QLatin1String("files"), E_FILES);
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        expands->insert(QLatin1String("prompt"), E_PROMPT); // interactive, so cannot be implemented
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        expands->insert(QLatin1String("replace"), E_REPLACE);
    }
    ExpandFunc func_t = ExpandFunc(expands->value(func.toLower()));

    QStringList ret;

    switch (func_t) {
        case E_BASENAME:
        case E_DIRNAME:
        case E_SECTION: {
            bool regexp = false;
            QString sep, var;
            int beg = 0;
            int end = -1;
            if (func_t == E_SECTION) {
                if (args.count() != 3 && args.count() != 4) {
                    q->logMessage(format("%1(var) section(var, sep, begin, end) "
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                        "requires three or four arguments.").arg(func));
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                } else {
                    var = args[0];
                    sep = args[1];
                    beg = args[2].toInt();
                    if (args.count() == 4)
                        end = args[3].toInt();
                }
            } else {
                if (args.count() != 1) {
                    q->logMessage(format("%1(var) requires one argument.").arg(func));
                } else {
                    var = args[0];
                    regexp = true;
                    sep = QLatin1String("[\\\\/]");
                    if (func_t == E_DIRNAME)
                        end = -2;
                    else
                        beg = -1;
                }
            }
            if (!var.isNull()) {
                foreach (const QString str, values(var)) {
                    if (regexp)
                        ret += str.section(QRegExp(sep), beg, end);
                    else
                        ret += str.section(sep, beg, end);
                }
            }
            break;
        }
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        case E_SPRINTF:
            if(args.count() < 1) {
                q->logMessage(format("sprintf(format, ...) requires at least one argument"));
            } else {
                QString tmp = args.at(0);
                for (int i = 1; i < args.count(); ++i)
                    tmp = tmp.arg(args.at(i));
                ret = split_value_list(tmp);
            }
            break;
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        case E_JOIN: {
            if (args.count() < 1 || args.count() > 4) {
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                q->logMessage(format("join(var, glue, before, after) requires one to four arguments."));
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            } else {
                QString glue, before, after;
                if (args.count() >= 2)
                    glue = args[1];
                if (args.count() >= 3)
                    before = args[2];
                if (args.count() == 4)
                    after = args[3];
                const QStringList &var = values(args.first());
                if (!var.isEmpty())
                    ret.append(before + var.join(glue) + after);
            }
            break;
        }
        case E_SPLIT: {
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            if (args.count() != 2) {
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                q->logMessage(format("split(var, sep) requires one or two arguments"));
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            } else {
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                const QString &sep = (args.count() == 2) ? args[1] : QString(Option::field_sep);
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                foreach (const QString &var, values(args.first()))
                    foreach (const QString &splt, var.split(sep))
                        ret.append(splt);
            }
            break;
        }
        case E_MEMBER: {
            if (args.count() < 1 || args.count() > 3) {
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                q->logMessage(format("member(var, start, end) requires one to three arguments."));
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            } else {
                bool ok = true;
                const QStringList var = values(args.first());
                int start = 0, end = 0;
                if (args.count() >= 2) {
                    QString start_str = args[1];
                    start = start_str.toInt(&ok);
                    if (!ok) {
                        if (args.count() == 2) {
                            int dotdot = start_str.indexOf(QLatin1String(".."));
                            if (dotdot != -1) {
                                start = start_str.left(dotdot).toInt(&ok);
                                if (ok)
                                    end = start_str.mid(dotdot+2).toInt(&ok);
                            }
                        }
                        if (!ok)
                            q->logMessage(format("member() argument 2 (start) '%2' invalid.")
                                .arg(start_str));
                    } else {
                        end = start;
                        if (args.count() == 3)
                            end = args[2].toInt(&ok);
                        if (!ok)
                            q->logMessage(format("member() argument 3 (end) '%2' invalid.\n")
                                .arg(args[2]));
                    }
                }
                if (ok) {
                    if (start < 0)
                        start += var.count();
                    if (end < 0)
                        end += var.count();
                    if (start < 0 || start >= var.count() || end < 0 || end >= var.count()) {
                        //nothing
                    } else if (start < end) {
                        for (int i = start; i <= end && var.count() >= i; i++)
                            ret.append(var[i]);
                    } else {
                        for (int i = start; i >= end && var.count() >= i && i >= 0; i--)
                            ret += var[i];
                    }
                }
            }
            break;
        }
        case E_FIRST:
        case E_LAST: {
            if (args.count() != 1) {
                q->logMessage(format("%1(var) requires one argument.").arg(func));
            } else {
                const QStringList var = values(args.first());
                if (!var.isEmpty()) {
                    if (func_t == E_FIRST)
                        ret.append(var[0]);
                    else
                        ret.append(var.last());
                }
            }
            break;
        }
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        case E_CAT:
            if (args.count() < 1 || args.count() > 2) {
                q->logMessage(format("cat(file, singleline=true) requires one or two arguments."));
            } else {
                QString file = args[0];
                file = Option::fixPathToLocalOS(file);

                bool singleLine = true;
                if (args.count() > 1)
                    singleLine = (args[1].toLower() == QLatin1String("true"));

                QFile qfile(file);
                if (qfile.open(QIODevice::ReadOnly)) {
                    QTextStream stream(&qfile);
                    while (!stream.atEnd()) {
                        ret += split_value_list(stream.readLine().trimmed());
                        if (!singleLine)
                            ret += QLatin1String("\n");
                    }
                    qfile.close();
                }
            }
            break;
#if 0 // Used only by Qt's configure for caching
        case E_FROMFILE:
            if (args.count() != 2) {
                q->logMessage(format("fromfile(file, variable) requires two arguments."));
            } else {
                QString file = args[0], seek_variableName = args[1];

                ProFile pro(Option::fixPathToLocalOS(file));

                ProFileEvaluator visitor;
                visitor.setVerbose(m_verbose);
                visitor.setCumulative(m_cumulative);

                if (!visitor.queryProFile(&pro))
                    break;

                if (!visitor.accept(&pro))
                    break;

                ret = visitor.values(seek_variableName);
            }
            break;
#endif
        case E_EVAL: {
            if (args.count() != 1) {
                q->logMessage(format("eval(variable) requires one argument"));

            } else {
                ret += values(args.at(0));
            }
            break; }
        case E_LIST: {
            static int x = 0;
            QString tmp;
            tmp.sprintf(".QMAKE_INTERNAL_TMP_variableName_%d", x++);
            ret = QStringList(tmp);
            QStringList lst;
            foreach (const QString &arg, args)
                lst += split_value_list(arg);
            m_valuemap[tmp] = lst;
            break; }
        case E_FIND:
            if (args.count() != 2) {
                q->logMessage(format("find(var, str) requires two arguments."));
            } else {
                QRegExp regx(args[1]);
                foreach (const QString &val, values(args.first()))
                    if (regx.indexIn(val) != -1)
                        ret += val;
            }
            break;
#if 0 // Disabled, as it is relatively useless, too slow and dangerous.
        case E_SYSTEM:
            if (!m_skipLevel) { // FIXME: should exec only if the result is being used
                                // (i.e., if this is nested into an assignment) - these
                                // are less likely to have side effects
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                if (args.count() < 1 || args.count() > 2) {
                    q->logMessage(format("system(execute) requires one or two arguments."));
                } else {
                    char buff[256];
                    FILE *proc = QT_POPEN(args[0].toLatin1(), "r");
                    bool singleLine = true;
                    if (args.count() > 1)
                        singleLine = (args[1].toLower() == QLatin1String("true"));
                    QString output;
                    while (proc && !feof(proc)) {
                        int read_in = int(fread(buff, 1, 255, proc));
                        if (!read_in)
                            break;
                        for (int i = 0; i < read_in; i++) {
                            if ((singleLine && buff[i] == '\n') || buff[i] == '\t')
                                buff[i] = ' ';
                        }
                        buff[read_in] = '\0';
                        output += QLatin1String(buff);
                    }
                    ret += split_value_list(output);
                }
            }
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            break;
#endif
        case E_UNIQUE:
            if(args.count() != 1) {
                q->logMessage(format("unique(var) requires one argument."));
            } else {
                foreach (const QString &var, values(args.first()))
                    if (!ret.contains(var))
                        ret.append(var);
            }
            break;
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        case E_QUOTE:
            for (int i = 0; i < args.count(); ++i)
                ret += QStringList(args.at(i));
            break;
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        case E_ESCAPE_EXPAND:
            for (int i = 0; i < args.size(); ++i) {
                QChar *i_data = args[i].data();
                int i_len = args[i].length();
                for (int x = 0; x < i_len; ++x) {
                    if (*(i_data+x) == QLatin1Char('\\') && x < i_len-1) {
                        if (*(i_data+x+1) == QLatin1Char('\\')) {
                            ++x;
                        } else {
                            struct {
                                char in, out;
                            } mapped_quotes[] = {
                                { 'n', '\n' },
                                { 't', '\t' },
                                { 'r', '\r' },
                                { 0, 0 }
                            };
                            for (int i = 0; mapped_quotes[i].in; ++i) {
                                if (*(i_data+x+1) == QLatin1Char(mapped_quotes[i].in)) {
                                    *(i_data+x) = QLatin1Char(mapped_quotes[i].out);
                                    if (x < i_len-2)
                                        memmove(i_data+x+1, i_data+x+2, (i_len-x-2)*sizeof(QChar));
                                    --i_len;
                                    break;
                                }
                            }
                        }
                    }
                }
                ret.append(QString(i_data, i_len));
            }
            break;
        case E_RE_ESCAPE:
            for (int i = 0; i < args.size(); ++i)
                ret += QRegExp::escape(args[i]);
            break;
        case E_UPPER:
        case E_LOWER:
            for (int i = 0; i < args.count(); ++i)
                if (func_t == E_UPPER)
                    ret += args[i].toUpper();
                else
                    ret += args[i].toLower();
            break;
        case E_FILES:
            if (args.count() != 1 && args.count() != 2) {
                q->logMessage(format("files(pattern, recursive=false) requires one or two arguments"));
            } else {
                bool recursive = false;
                if (args.count() == 2)
                    recursive = (args[1].toLower() == QLatin1String("true") || args[1].toInt());
                QStringList dirs;
                QString r = Option::fixPathToLocalOS(args[0]);
                int slash = r.lastIndexOf(QDir::separator());
                if (slash != -1) {
                    dirs.append(r.left(slash));
                    r = r.mid(slash+1);
                } else {
                    dirs.append(QString());
                }

                const QRegExp regex(r, Qt::CaseSensitive, QRegExp::Wildcard);
                for (int d = 0; d < dirs.count(); d++) {
                    QString dir = dirs[d];
                    if (!dir.isEmpty() && !dir.endsWith(Option::dir_sep))
                        dir += QLatin1Char('/');

                    QDir qdir(dir);
                    for (int i = 0; i < (int)qdir.count(); ++i) {
                        if (qdir[i] == QLatin1String(".") || qdir[i] == QLatin1String(".."))
                            continue;
                        QString fname = dir + qdir[i];
                        if (QFileInfo(fname).isDir()) {
                            if (recursive)
                                dirs.append(fname);
                        }
                        if (regex.exactMatch(qdir[i]))
                            ret += fname;
                    }
                }
            }
            break;
        case E_REPLACE:
            if(args.count() != 3 ) {
                q->logMessage(format("replace(var, before, after) requires three arguments"));
            } else {
                const QRegExp before(args[1]);
                const QString after(args[2]);
                foreach (QString val, values(args.first()))
                    ret += val.replace(before, after);
            }
            break;
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        case 0:
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            q->logMessage(format("'%1' is not a recognized replace function").arg(func));
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            break;
        default:
            q->logMessage(format("Function '%1' is not implemented").arg(func));
            break;
    }

    return ret;
}

bool ProFileEvaluator::Private::evaluateConditionalFunction(const QString &function,
    const QString &arguments, bool *result)
{
    QStringList argumentsList = split_arg_list(arguments);
    QString sep;
    sep.append(Option::field_sep);

    QStringList args;
    for (int i = 0; i < argumentsList.count(); ++i)
        args += expandVariableReferences(argumentsList[i]).join(sep);

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    enum TestFunc { T_REQUIRES=1, T_GREATERTHAN, T_LESSTHAN, T_EQUALS,
                    T_EXISTS, T_EXPORT, T_CLEAR, T_UNSET, T_EVAL, T_CONFIG, T_SYSTEM,
                    T_RETURN, T_BREAK, T_NEXT, T_DEFINED, T_CONTAINS, T_INFILE,
                    T_COUNT, T_ISEMPTY, T_INCLUDE, T_LOAD, T_DEBUG, T_MESSAGE, T_IF };
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    static QHash<QString, int> *functions = 0;
    if (!functions) {
        functions = new QHash<QString, int>;
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        functions->insert(QLatin1String("requires"), T_REQUIRES);
        functions->insert(QLatin1String("greaterThan"), T_GREATERTHAN);
        functions->insert(QLatin1String("lessThan"), T_LESSTHAN);
        functions->insert(QLatin1String("equals"), T_EQUALS);
        functions->insert(QLatin1String("isEqual"), T_EQUALS);
        functions->insert(QLatin1String("exists"), T_EXISTS);
        functions->insert(QLatin1String("export"), T_EXPORT);
        functions->insert(QLatin1String("clear"), T_CLEAR);
        functions->insert(QLatin1String("unset"), T_UNSET);
        functions->insert(QLatin1String("eval"), T_EVAL);
        functions->insert(QLatin1String("CONFIG"), T_CONFIG);
        functions->insert(QLatin1String("if"), T_IF);
        functions->insert(QLatin1String("isActiveConfig"), T_CONFIG);
        functions->insert(QLatin1String("system"), T_SYSTEM);
        functions->insert(QLatin1String("return"), T_RETURN);
        functions->insert(QLatin1String("break"), T_BREAK);
        functions->insert(QLatin1String("next"), T_NEXT);
        functions->insert(QLatin1String("defined"), T_DEFINED);
        functions->insert(QLatin1String("contains"), T_CONTAINS);
        functions->insert(QLatin1String("infile"), T_INFILE);
        functions->insert(QLatin1String("count"), T_COUNT);
        functions->insert(QLatin1String("isEmpty"), T_ISEMPTY);
        functions->insert(QLatin1String("load"), T_LOAD);         //v
        functions->insert(QLatin1String("include"), T_INCLUDE);   //v
        functions->insert(QLatin1String("debug"), T_DEBUG);
        functions->insert(QLatin1String("message"), T_MESSAGE);   //v
        functions->insert(QLatin1String("warning"), T_MESSAGE);   //v
        functions->insert(QLatin1String("error"), T_MESSAGE);     //v
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    }

    bool cond = false;
    bool ok = true;

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    TestFunc func_t = (TestFunc)functions->value(function);
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    switch (func_t) {
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#if 0
        case T_INFILE:
        case T_REQUIRES:
        case T_GREATERTHAN:
        case T_LESSTHAN:
        case T_EQUALS:
        case T_EXPORT:
        case T_CLEAR:
        case T_UNSET:
        case T_EVAL:
        case T_IF:
        case T_RETURN:
        case T_BREAK:
        case T_NEXT:
        case T_DEFINED:
#endif
        case T_CONFIG: {
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            if (args.count() < 1 || args.count() > 2) {
                q->logMessage(format("CONFIG(config) requires one or two arguments."));
                ok = false;
                break;
            }
            if (args.count() == 1) {
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                //cond = isActiveConfig(args.first()); XXX
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                break;
            }
            const QStringList mutuals = args[1].split(QLatin1Char('|'));
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            const QStringList &configs = valuesDirect(QLatin1String("CONFIG"));
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            for (int i = configs.size() - 1 && ok; i >= 0; i--) {
                for (int mut = 0; mut < mutuals.count(); mut++) {
                    if (configs[i] == mutuals[mut].trimmed()) {
                        cond = (configs[i] == args[0]);
                        break;
                    }
                }
            }
            break;
        }
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        case T_CONTAINS: {
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            if (args.count() < 2 || args.count() > 3) {
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                q->logMessage(format("contains(var, val) requires two or three arguments."));
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                ok = false;
                break;
            }

            QRegExp regx(args[1]);
            const QStringList &l = values(args.first());
            if (args.count() == 2) {
                for (int i = 0; i < l.size(); ++i) {
                    const QString val = l[i];
                    if (regx.exactMatch(val) || val == args[1]) {
                        cond = true;
                        break;
                    }
                }
            } else {
                const QStringList mutuals = args[2].split(QLatin1Char('|'));
                for (int i = l.size() - 1; i >= 0; i--) {
                    const QString val = l[i];
                    for (int mut = 0; mut < mutuals.count(); mut++) {
                        if (val == mutuals[mut].trimmed()) {
                            cond = (regx.exactMatch(val) || val == args[1]);
                            break;
                        }
                    }
                }
            }

            break;
        }
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        case T_COUNT: {
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            if (args.count() != 2 && args.count() != 3) {
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                q->logMessage(format("count(var, count, op=\"equals\") requires two or three arguments."));
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                ok = false;
                break;
            }
            if (args.count() == 3) {
                QString comp = args[2];
                if (comp == QLatin1String(">") || comp == QLatin1String("greaterThan")) {
                    cond = values(args.first()).count() > args[1].toInt();
                } else if (comp == QLatin1String(">=")) {
                    cond = values(args.first()).count() >= args[1].toInt();
                } else if (comp == QLatin1String("<") || comp == QLatin1String("lessThan")) {
                    cond = values(args.first()).count() < args[1].toInt();
                } else if (comp == QLatin1String("<=")) {
                    cond = values(args.first()).count() <= args[1].toInt();
                } else if (comp == QLatin1String("equals") || comp == QLatin1String("isEqual") || comp == QLatin1String("=") || comp == QLatin1String("==")) {
                    cond = values(args.first()).count() == args[1].toInt();
                } else {
                    ok = false;
                    q->logMessage(format("unexpected modifier to count(%2)").arg(comp));
                }
                break;
            }
            cond = values(args.first()).count() == args[1].toInt();
            break;
        }
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        case T_INCLUDE: {
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            if (m_skipLevel && !m_cumulative)
                break;
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            QString parseInto;
            if (args.count() == 2) {
                parseInto = args[1];
            } else if (args.count() != 1) {
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                q->logMessage(format("include(file) requires one or two arguments."));
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                ok = false;
                break;
            }
            QString fileName = args.first();
            // ### this breaks if we have include(c:/reallystupid.pri) but IMHO that's really bad style.
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            QDir currentProPath(currentDirectory());
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            fileName = QDir::cleanPath(currentProPath.absoluteFilePath(fileName));
            ok = evaluateFile(fileName, &ok);
            break;
        }
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        case T_LOAD: {
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            if (m_skipLevel && !m_cumulative)
                break;
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            QString parseInto;
            bool ignore_error = false;
            if (args.count() == 2) {
                QString sarg = args[1];
                ignore_error = (sarg.toLower() == QLatin1String("true") || sarg.toInt());
            } else if (args.count() != 1) {
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                q->logMessage(format("load(feature) requires one or two arguments."));
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                ok = false;
                break;
            }
            ok = evaluateFeatureFile( args.first(), &cond);
            break;
        }
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        case T_DEBUG:
            // Yup - do nothing. Nothing is going to enable debug output anyway.
            break;
        case T_MESSAGE: {
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            if (args.count() != 1) {
                q->logMessage(format("%1(message) requires one argument.").arg(function));
                ok = false;
                break;
            }
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            QString msg = fixEnvVariables(args.first());
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            if (function == QLatin1String("error")) {
                QStringList parents;
                foreach (ProFile *proFile, m_profileStack)
                    parents.append(proFile->fileName());
                if (!parents.isEmpty())
                    parents.takeLast();
                if (parents.isEmpty()) 
                    q->fileMessage(format("Project ERROR: %1").arg(msg));
                else
                    q->fileMessage(format("Project ERROR: %1. File was included from: '%2'")
                        .arg(msg).arg(parents.join(QLatin1String("', '"))));
            } else {
                q->fileMessage(format("Project MESSAGE: %1").arg(msg));
            }
            break;
        }
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#if 0 // Way too dangerous to enable.
        case T_SYSTEM: {
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            if (args.count() != 1) {
                q->logMessage(format("system(exec) requires one argument."));
                ok = false;
                break;
            }
            ok = system(args.first().toLatin1().constData()) == 0;
            break;
        }
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#endif
        case T_ISEMPTY: {
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            if (args.count() != 1) {
                q->logMessage(format("isEmpty(var) requires one argument."));
                ok = false;
                break;
            }
            QStringList sl = values(args.first());
            if (sl.count() == 0) {
                cond = true;
            } else if (sl.count() > 0) {
                QString var = sl.first();
                cond = (var.isEmpty());
            }
            break;
        }
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        case T_EXISTS: {
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            if (args.count() != 1) {
                q->logMessage(format("exists(file) requires one argument."));
                ok = false;
                break;
            }
            QString file = args.first();
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            file = Option::fixPathToLocalOS(file);
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            if (QFile::exists(file)) {
                cond = true;
                break;
            }
            //regular expression I guess
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            QString dirstr = currentDirectory();
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            int slsh = file.lastIndexOf(Option::dir_sep);
            if (slsh != -1) {
                dirstr = file.left(slsh+1);
                file = file.right(file.length() - slsh - 1);
            }
            cond = QDir(dirstr).entryList(QStringList(file)).count();

            break;
        }
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        case 0:
            // This is too chatty currently (missing defineTest and defineReplace)
            //q->logMessage(format("'%1' is not a recognized test function").arg(function));
            break;
        default:
            q->logMessage(format("Function '%1' is not implemented").arg(function));
            break;
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    }

    if (result)
        *result = cond;

    return ok;
}

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QStringList ProFileEvaluator::Private::values(const QString &variableName,
                                              const QHash<QString, QStringList> &place,
                                              const ProFile *pro) const
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{
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    if (variableName == QLatin1String("LITERAL_WHITESPACE")) //a real space in a token
        return QStringList(QLatin1String("\t"));
    if (variableName == QLatin1String("LITERAL_DOLLAR")) //a real $
        return QStringList(QLatin1String("$"));
    if (variableName == QLatin1String("LITERAL_HASH")) //a real #
        return QStringList(QLatin1String("#"));
    if (variableName == QLatin1String("OUT_PWD")) //the out going dir
        return QStringList(m_outputDir);
    if (variableName == QLatin1String("PWD") ||  //current working dir (of _FILE_)
        variableName == QLatin1String("IN_PWD"))
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        return QStringList(currentDirectory());
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