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

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

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** This file is part of the qmake application of the Qt Toolkit.

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** No Commercial Usage

** This file contains pre-release code and may not be distributed.

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** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

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** 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

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**

** 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

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** $QT_END_LICENSE$

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

#ifndef MAKEFILE_H

#define MAKEFILE_H

#include "option.h"

#include "project.h"

#include "makefiledeps.h"

#include <qtextstream.h>

#include <qlist.h>

#include <qhash.h>

#include <qfileinfo.h>

QT_BEGIN_NAMESPACE

#ifdef Q_OS_WIN32

#define QT_POPEN _popen

#define QT_PCLOSE _pclose

#else

#define QT_POPEN popen

#define QT_PCLOSE pclose

#endif

struct ReplaceExtraCompilerCacheKey

{

    mutable uint hash;

    QString var, in, out, pwd;

    ReplaceExtraCompilerCacheKey(const QString &v, const QStringList &i, const QStringList &o);

    bool operator==(const ReplaceExtraCompilerCacheKey &f) const;

    inline uint hashCode() const {

        if(!hash)

            hash = qHash(var) | qHash(in) | qHash(out) /*| qHash(pwd)*/;

        return hash;

    }

};

inline uint qHash(const ReplaceExtraCompilerCacheKey &f) { return f.hashCode(); }

struct ReplaceExtraCompilerCacheKey;

class MakefileGenerator : protected QMakeSourceFileInfo

{

    QString spec;

    bool init_opath_already, init_already, no_io;

    QHash<QString, bool> init_compiler_already;

    QString build_args(const QString &outdir=QString());

    void checkMultipleDefinition(const QString &, const QString &);

    //internal caches

    mutable QHash<QString, QMakeLocalFileName> depHeuristicsCache;

    mutable QHash<QString, QStringList> dependsCache;

    mutable QHash<ReplaceExtraCompilerCacheKey, QString> extraCompilerVariablesCache;

protected:

    QStringList createObjectList(const QStringList &sources);

    void generatePrint(const QString pathName);

    //makefile style generator functions

    void writeObj(QTextStream &, const QString &src);

    void writeInstalls(QTextStream &t, const QString &installs, bool noBuild=false);

    void writeHeader(QTextStream &t);

    void writeSubDirs(QTextStream &t);

    void writeMakeQmake(QTextStream &t);

    void writeExtraVariables(QTextStream &t);

    void writeExtraTargets(QTextStream &t);

    void writeExtraCompilerTargets(QTextStream &t);

    void writeExtraCompilerVariables(QTextStream &t);

    virtual bool writeStubMakefile(QTextStream &t);

    virtual bool writeMakefile(QTextStream &t);

    //generating subtarget makefiles

    struct SubTarget

    {

        QString name;

        QString in_directory, out_directory;

        QString profile, target, makefile;

        QStringList depends;

    };

    enum SubTargetFlags {

        SubTargetInstalls=0x01,

        SubTargetOrdered=0x02,

        SubTargetSkipDefaultVariables=0x04,

        SubTargetSkipDefaultTargets=0x08,

        SubTargetsNoFlags=0x00

    };

    QList<MakefileGenerator::SubTarget*> findSubDirsSubTargets() const;

    void writeSubTargets(QTextStream &t, QList<SubTarget*> subtargets, int flags);

    //extra compiler interface

    bool verifyExtraCompiler(const QString &c, const QString &f);

    virtual QString replaceExtraCompilerVariables(const QString &, const QStringList &, const QStringList &);

    inline QString replaceExtraCompilerVariables(const QString &val, const QString &in, const QString &out)

    { return replaceExtraCompilerVariables(val, QStringList(in), QStringList(out)); }

    //interface to the source file info

    QMakeLocalFileName fixPathForFile(const QMakeLocalFileName &, bool);

    QMakeLocalFileName findFileForDep(const QMakeLocalFileName &, const QMakeLocalFileName &);

    QFileInfo findFileInfo(const QMakeLocalFileName &);

    QMakeProject *project;

    //escape

    virtual QString unescapeFilePath(const QString &path) const;

    virtual QStringList unescapeFilePaths(const QStringList &path) const;

    virtual QString escapeFilePath(const QString &path) const { return path; }

    virtual QString escapeDependencyPath(const QString &path) const { return escapeFilePath(path); }

    QStringList escapeFilePaths(const QStringList &paths) const;

    QStringList escapeDependencyPaths(const QStringList &paths) const;

    //initialization

    void verifyCompilers();

    virtual void init();

    void initOutPaths();

    struct Compiler

    {

        QString variable_in;

        enum CompilerFlag {

            CompilerNoFlags       = 0x00,

            CompilerBuiltin       = 0x01,

            CompilerNoCheckDeps   = 0x02,

            CompilerRemoveNoExist = 0x04

        };

        uint flags, type;

    };

    void initCompiler(const Compiler &comp);

    enum VPATHFlag {

        VPATH_NoFlag             = 0x00,

        VPATH_WarnMissingFiles   = 0x01,

        VPATH_RemoveMissingFiles = 0x02,

        VPATH_NoFixify           = 0x04

    };

    QStringList findFilesInVPATH(QStringList l, uchar flags, const QString &var="");

    inline int findExecutable(const QStringList &cmdline)

    { int ret; canExecute(cmdline, &ret); return ret; }

    bool canExecute(const QStringList &cmdline, int *argv0) const;

    inline bool canExecute(const QString &cmdline) const

    { return canExecute(cmdline.split(' '), 0); }

    bool mkdir(const QString &dir) const;

    QString mkdir_p_asstring(const QString &dir, bool escape=true) const;

    //subclasses can use these to query information about how the generator was "run"

    QString buildArgs(const QString &outdir=QString());

    QString specdir(const QString &outdir=QString());

    virtual QStringList &findDependencies(const QString &file);

    virtual bool doDepends() const { return Option::mkfile::do_deps; }

    void filterIncludedFiles(const QString &);

    virtual void processSources() {

        filterIncludedFiles("SOURCES");

        filterIncludedFiles("GENERATED_SOURCES");

    }

    //for cross-platform dependent directories

    virtual void usePlatformDir();

    //for installs

    virtual QString defaultInstall(const QString &);

    //for prl

    QString prlFileName(bool fixify=true);

    void writePrlFile();

    bool processPrlFile(QString &);

    virtual void processPrlVariable(const QString &, const QStringList &);

    virtual void processPrlFiles();

    virtual void writePrlFile(QTextStream &);

    //make sure libraries are found

    virtual bool findLibraries();

    //for retrieving values and lists of values

    virtual QString var(const QString &var);

    QString varGlue(const QString &var, const QString &before, const QString &glue, const QString &after);

    QString varList(const QString &var);

    QString val(const QStringList &varList);

    QString valGlue(const QStringList &varList, const QString &before, const QString &glue, const QString &after);

    QString valList(const QStringList &varList);

    QString filePrefixRoot(const QString &, const QString &);

    //file fixification to unify all file names into a single pattern

    enum FileFixifyType { FileFixifyAbsolute, FileFixifyRelative, FileFixifyDefault };

    QString fileFixify(const QString& file, const QString &out_dir=QString(),

                       const QString &in_dir=QString(), FileFixifyType fix=FileFixifyDefault, bool canon=true) const;

    inline QString fileFixify(const QString& file, FileFixifyType fix, bool canon=true) const

    { return fileFixify(file, QString(), QString(), fix, canon); }

    QStringList fileFixify(const QStringList& files, const QString &out_dir=QString(),

                           const QString &in_dir=QString(), FileFixifyType fix=FileFixifyDefault, bool canon=true) const;

    inline QStringList fileFixify(const QStringList& files, FileFixifyType fix, bool canon=true) const

    { return fileFixify(files, QString(), QString(), fix, canon); }

public:

    MakefileGenerator();

    virtual ~MakefileGenerator();

    QMakeProject *projectFile() const;

    void setProjectFile(QMakeProject *p);

    void setNoIO(bool o);

    bool noIO() const;

    inline bool exists(QString file) const { return fileInfo(file).exists(); }

    QFileInfo fileInfo(QString file) const;

    static MakefileGenerator *create(QMakeProject *);

    virtual bool write();

    virtual bool writeProjectMakefile();

    virtual bool supportsMetaBuild() { return true; }

    virtual bool supportsMergedBuilds() { return false; }

    virtual bool mergeBuildProject(MakefileGenerator * /*other*/) { return false; }

    virtual bool openOutput(QFile &, const QString &build) const;

    virtual bool isWindowsShell() const { return Option::target_mode == Option::TARG_WIN_MODE; }

};

inline void MakefileGenerator::setNoIO(bool o)

{ no_io = o; }

inline bool MakefileGenerator::noIO() const

{ return no_io; }

inline QString MakefileGenerator::defaultInstall(const QString &)

{ return QString(""); }

inline bool MakefileGenerator::findLibraries()

{ return true; }

inline MakefileGenerator::~MakefileGenerator()

{ }

QT_END_NAMESPACE

#endif // MAKEFILE_H