/****************************************************************************

**

** Copyright (C) 2009 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.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#ifndef PROPARSERUTILS_H

#define PROPARSERUTILS_H

#include <QtCore/QDir>

#include <QtCore/QLibraryInfo>

QT_BEGIN_NAMESPACE

// Pre- and postcondition macros

#define PRE(cond) do {if (!(cond))qt_assert(#cond,__FILE__,__LINE__);} while (0)

#define POST(cond) do {if (!(cond))qt_assert(#cond,__FILE__,__LINE__);} while (0)

// This struct is from qmake, but we are not using everything.

struct Option

{

    //simply global convenience

    //static QString libtool_ext;

    //static QString pkgcfg_ext;

    //static QString prf_ext;

    //static QString prl_ext;

    //static QString ui_ext;

    //static QStringList h_ext;

    //static QStringList cpp_ext;

    //static QString h_moc_ext;

    //static QString cpp_moc_ext;

    //static QString obj_ext;

    //static QString lex_ext;

    //static QString yacc_ext;

    //static QString h_moc_mod;

    //static QString cpp_moc_mod;

    //static QString lex_mod;

    //static QString yacc_mod;

    static QString dir_sep;

    static QString dirlist_sep;

    static QString qmakespec;

    static QChar field_sep;

    enum TARG_MODE { TARG_UNIX_MODE, TARG_WIN_MODE, TARG_MACX_MODE, TARG_MAC9_MODE, TARG_QNX6_MODE };

    static TARG_MODE target_mode;

    //static QString pro_ext;

    //static QString res_ext;

    static void init()

    {

#ifdef Q_OS_WIN

        Option::dirlist_sep = QLatin1Char(';');

        Option::dir_sep = QLatin1Char('\\');

#else

        Option::dirlist_sep = QLatin1Char(':');

        Option::dir_sep = QLatin1Char(QLatin1Char('/'));

#endif

        Option::qmakespec = QString::fromLatin1(qgetenv("QMAKESPEC").data());

        Option::field_sep = QLatin1Char(' ');

    }

    enum StringFixFlags {

        FixNone                 = 0x00,

        FixEnvVars              = 0x01,

        FixPathCanonicalize     = 0x02,

        FixPathToLocalSeparators  = 0x04,

        FixPathToTargetSeparators = 0x08

    };

    static QString fixString(QString string, uchar flags);

    inline static QString fixPathToLocalOS(const QString &in, bool fix_env = true, bool canonical = true)

    {

        uchar flags = FixPathToLocalSeparators;

        if (fix_env)

            flags |= FixEnvVars;

        if (canonical)

            flags |= FixPathCanonicalize;

        return fixString(in, flags);

    }

};

#if defined(Q_OS_WIN32)

Option::TARG_MODE Option::target_mode = Option::TARG_WIN_MODE;

#elif defined(Q_OS_MAC)

Option::TARG_MODE Option::target_mode = Option::TARG_MACX_MODE;

#elif defined(Q_OS_QNX6)

Option::TARG_MODE Option::target_mode = Option::TARG_QNX6_MODE;

#else

Option::TARG_MODE Option::target_mode = Option::TARG_UNIX_MODE;

#endif

QString Option::qmakespec;

QString Option::dirlist_sep;

QString Option::dir_sep;

QChar Option::field_sep;

static void insertUnique(QHash<QString, QStringList> *map,

    const QString &key, const QStringList &value)

{

    QStringList &sl = (*map)[key];

    foreach (const QString &str, value)

        if (!sl.contains(str))

            sl.append(str);

}

static void removeEach(QHash<QString, QStringList> *map,

    const QString &key, const QStringList &value)

{

    QStringList &sl = (*map)[key];

    foreach (const QString &str, value)

        sl.removeAll(str);

}

/*

  See ProFileEvaluator::Private::visitProValue(...)

static QStringList replaceInList(const QStringList &varList, const QRegExp &regexp,

                           const QString &replace, bool global)

{

    QStringList resultList = varList;

    for (QStringList::Iterator varit = resultList.begin(); varit != resultList.end();) {

        if (varit->contains(regexp)) {

            *varit = varit->replace(regexp, replace);

            if (varit->isEmpty())

                varit = resultList.erase(varit);

            else

                ++varit;

            if (!global)

                break;

        } else {

            ++varit;

        }

    }

    return resultList;

}

*/

inline QString fixEnvVariables(const QString &x)

{

    return Option::fixString(x, Option::FixEnvVars);

}

inline QStringList splitPathList(const QString &paths)

{

    return paths.split(Option::dirlist_sep);

}

static QStringList split_arg_list(QString params)

{

    int quote = 0;

    QStringList args;

    const ushort LPAREN = '(';

    const ushort RPAREN = ')';

    const ushort SINGLEQUOTE = '\'';

    const ushort DOUBLEQUOTE = '"';

    const ushort COMMA = ',';

    const ushort SPACE = ' ';

    //const ushort TAB = '\t';

    ushort unicode;

    const QChar *params_data = params.data();

    const int params_len = params.length();

    int last = 0;

    while (last < params_len && ((params_data+last)->unicode() == SPACE

                                /*|| (params_data+last)->unicode() == TAB*/))

        ++last;

    for (int x = last, parens = 0; x <= params_len; x++) {

        unicode = (params_data+x)->unicode();

        if (x == params_len) {

            while (x && (params_data+(x-1))->unicode() == SPACE)

                --x;

            QString mid(params_data+last, x-last);

            if (quote) {

                if (mid[0] == quote && mid[(int)mid.length()-1] == quote)

                    mid = mid.mid(1, mid.length()-2);

                quote = 0;

            }

            args << mid;

            break;

        }

        if (unicode == LPAREN) {

            --parens;

        } else if (unicode == RPAREN) {

            ++parens;

        } else if (quote && unicode == quote) {

            quote = 0;

        } else if (!quote && (unicode == SINGLEQUOTE || unicode == DOUBLEQUOTE)) {

            quote = unicode;

        }

        if (!parens && !quote && unicode == COMMA) {

            QString mid = params.mid(last, x - last).trimmed();

            args << mid;

            last = x+1;

            while (last < params_len && ((params_data+last)->unicode() == SPACE

                                        /*|| (params_data+last)->unicode() == TAB*/))

                ++last;

        }

    }

    return args;

}

static QStringList split_value_list(const QString &vals, bool do_semicolon=false)

{

    QString build;

    QStringList ret;

    QStack<char> quote;

    const ushort LPAREN = '(';

    const ushort RPAREN = ')';

    const ushort SINGLEQUOTE = '\'';

    const ushort DOUBLEQUOTE = '"';

    const ushort BACKSLASH = '\\';

    const ushort SEMICOLON = ';';

    ushort unicode;

    const QChar *vals_data = vals.data();

    const int vals_len = vals.length();

    for (int x = 0, parens = 0; x < vals_len; x++) {

        unicode = vals_data[x].unicode();

        if (x != (int)vals_len-1 && unicode == BACKSLASH &&

            (vals_data[x+1].unicode() == SINGLEQUOTE || vals_data[x+1].unicode() == DOUBLEQUOTE)) {

            build += vals_data[x++]; //get that 'escape'

        } else if (!quote.isEmpty() && unicode == quote.top()) {

            quote.pop();

        } else if (unicode == SINGLEQUOTE || unicode == DOUBLEQUOTE) {

            quote.push(unicode);

        } else if (unicode == RPAREN) {

            --parens;

        } else if (unicode == LPAREN) {

            ++parens;

        }

        if (!parens && quote.isEmpty() && ((do_semicolon && unicode == SEMICOLON) ||

                                           vals_data[x] == Option::field_sep)) {

            ret << build;

            build.clear();

        } else {

            build += vals_data[x];

        }

    }

    if (!build.isEmpty())

        ret << build;

    return ret;

}

static QStringList qmake_mkspec_paths()

{

    QStringList ret;

    const QString concat = QDir::separator() + QLatin1String("mkspecs");

    QByteArray qmakepath = qgetenv("QMAKEPATH");

    if (!qmakepath.isEmpty()) {

        const QStringList lst = splitPathList(QString::fromLocal8Bit(qmakepath));

        for (QStringList::ConstIterator it = lst.begin(); it != lst.end(); ++it)

            ret << ((*it) + concat);

    }

    ret << QLibraryInfo::location(QLibraryInfo::DataPath) + concat;

    return ret;

}

QT_END_NAMESPACE

#endif // PROPARSERUTILS_H