/**********************************************************************
** Copyright (C) 2000-2005 Trolltech AS.  All rights reserved.
**
** This file is part of the Qtopia Environment.
** 
** This program is free software; you can redistribute it and/or modify it
** under the terms of the GNU General Public License as published by the
** Free Software Foundation; either version 2 of the License, or (at your
** option) any later version.
** 
** A copy of the GNU GPL license version 2 is included in this package as 
** LICENSE.GPL.
**
** This program is distributed in the hope that it will be useful, but
** WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
** See the GNU General Public License for more details.
**
** In addition, as a special exception Trolltech gives permission to link
** the code of this program with Qtopia applications copyrighted, developed
** and distributed by Trolltech under the terms of the Qtopia Personal Use
** License Agreement. You must comply with the GNU General Public License
** in all respects for all of the code used other than the applications
** licensed under the Qtopia Personal Use License Agreement. If you modify
** this file, you may extend this exception to your version of the file,
** but you are not obligated to do so. If you do not wish to do so, delete
** this exception statement from your version.
** 
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#include "winmakefile.h"
#include "option.h"
#include "project.h"
#include "meta.h"
#include <qtextstream.h>
#include <qstring.h>
#include <qdict.h>
#include <qregexp.h>
#include <qstringlist.h>
#include <qdir.h>


Win32MakefileGenerator::Win32MakefileGenerator(QMakeProject *p) : MakefileGenerator(p)
{

}


struct SubDir
{
    QString directory, profile, target, makefile;
};

void
Win32MakefileGenerator::writeSubDirs(QTextStream &t)
{
    QPtrList<SubDir> subdirs;
    {
	QStringList subdirs_in = project->variables()["SUBDIRS"];
	for(QStringList::Iterator it = subdirs_in.begin(); it != subdirs_in.end(); ++it) {
	    QString file = (*it);
	    file = fileFixify(file);
	    SubDir *sd = new SubDir;
	    subdirs.append(sd);
	    sd->makefile = "$(MAKEFILE)";
	    if((*it).right(4) == ".pro") {
		int slsh = file.findRev(Option::dir_sep);
		if(slsh != -1) {
		    sd->directory = file.left(slsh+1);
		    sd->profile = file.mid(slsh+1);
		} else {
		    sd->profile = file;
		}
	    } else {
		sd->directory = file;
	    }
	    while(sd->directory.right(1) == Option::dir_sep)
		sd->directory = sd->directory.left(sd->directory.length() - 1);
	    if(!sd->profile.isEmpty()) {
		QString basename = sd->directory;
		int new_slsh = basename.findRev(Option::dir_sep);
		if(new_slsh != -1)
		    basename = basename.mid(new_slsh+1);
		if(sd->profile != basename + ".pro")
		    sd->makefile += "." + sd->profile.left(sd->profile.length() - 4); //no need for the .pro
	    }
	    sd->target = "sub-" + (*it);
	    sd->target.replace('/', '-');
	    sd->target.replace('.', '_');
	}
    }
    QPtrListIterator<SubDir> it(subdirs);

    t << "MAKEFILE = " << (project->isEmpty("MAKEFILE") ? QString("Makefile") : var("MAKEFILE")) << endl;
    t << "QMAKE =	" << (project->isEmpty("QMAKE_QMAKE") ? QString("qmake") : var("QMAKE_QMAKE")) << endl;
    t << "SUBTARGETS	= ";
    for( it.toFirst(); it.current(); ++it)
	t << " \\\n\t\t" << it.current()->target;
    t << endl << endl;
    t << "all: $(MAKEFILE) $(SUBTARGETS)" << endl << endl;

    for( it.toFirst(); it.current(); ++it) {
	bool have_dir = !(*it)->directory.isEmpty();

	//make the makefile
	QString mkfile = (*it)->makefile;
	if(have_dir)
	    mkfile.prepend((*it)->directory + Option::dir_sep);
	t << mkfile << ":";
	if(have_dir)
	    t << "\n\t" << "cd " << (*it)->directory;
	t << "\n\t" << "$(QMAKE) " << (*it)->profile << " " << buildArgs();
	t << " -o " << (*it)->makefile;
	if(have_dir) {
	    int subLevels = it.current()->directory.contains(Option::dir_sep) + 1;
	    t << "\n\t" << "@cd ..";
	    for(int i = 1; i < subLevels; i++ )
		t << Option::dir_sep << "..";
	}
	t << endl;

	//now actually build
	t << (*it)->target << ": " << mkfile;
	if(project->variables()["QMAKE_NOFORCE"].isEmpty())
	    t << " FORCE";
	if(have_dir)
	    t << "\n\t" << "cd " << (*it)->directory;
	t << "\n\t" << "$(MAKE)";
        t << " -f " << (*it)->makefile;
	if(have_dir) {
	    int subLevels = it.current()->directory.contains(Option::dir_sep) + 1;
	    t << "\n\t" << "@cd ..";
	    for(int i = 1; i < subLevels; i++ )
		t << Option::dir_sep << "..";
	}
	t << endl << endl;
    }

    if(project->variables()["QMAKE_INTERNAL_QMAKE_DEPS"].findIndex("qmake_all") == -1)
	project->variables()["QMAKE_INTERNAL_QMAKE_DEPS"].append("qmake_all");
    writeMakeQmake(t);

    t << "qmake_all:";
    t << "\n\t" << "@cd .";
#if 0
    if ( !subdirs.isEmpty() ) {
	for( it.toFirst(); it.current(); ++it) {
	    QString subdir = (*it)->directory;
	    QString profile = (*it)->profile;
	    int subLevels = subdir.contains(Option::dir_sep) + 1;
	    t << "\n\t"
	      << "cd " << subdir << "\n\t";
	    /*
	    int lastSlash = subdir.findRev(Option::dir_sep);
	    if(lastSlash != -1)
		subdir = subdir.mid( lastSlash + 1 );
	    t << "$(QMAKE) "
	      << ( !profile.isEmpty() ? profile : subdir + ".pro" )
	      << " -o " << (*it)->makefile
	      << " " << buildArgs() << "\n\t"
	    */
	    t << "$(MAKE) qmake\n\t"
	      << "@cd ..";
	    for(int i = 1; i < subLevels; i++ )
		t << Option::dir_sep << "..";
	}
    } else {
	// Borland make does not like empty an empty command section, so insert
	// a dummy command.
	t << "\n\t" << "@cd .";
    }
#endif
    t << endl << endl;

    QStringList targs;
    targs << "clean" << "install_subdirs" << "mocables" << "uicables" << "uiclean" << "mocclean";
    targs += project->values("SUBDIR_TARGETS");
    for(QStringList::Iterator targ_it = targs.begin(); targ_it != targs.end(); ++targ_it) {
        t << (*targ_it) << ": qmake_all";
	QString targ = (*targ_it);
	if(targ == "install_subdirs")
	    targ = "install";
	else if(targ == "uninstall_subdirs")
	    targ = "uninstall";
	if(targ == "clean")
	    t << varGlue("QMAKE_CLEAN","\n\t-$(DEL_FILE) ","\n\t-$(DEL_FILE) ", "");
	if (!subdirs.isEmpty()) {
	    for( it.toFirst(); it.current(); ++it) {
		int subLevels = (*it)->directory.contains(Option::dir_sep) + 1;
		bool have_dir = !(*it)->directory.isEmpty();
		if(have_dir)
		    t << "\n\t" << "cd " << (*it)->directory;
		QString in_file = " -f " + (*it)->makefile;
		t << "\n\t" << "$(MAKE) " << in_file << " " << targ;
		if(have_dir) {
		    t << "\n\t" << "@cd ..";
		    for(int i = 1; i < subLevels; i++ )
			t << Option::dir_sep << "..";
		}
	    }
	} else {
	    // Borland make does not like empty an empty command section, so
	    // insert a dummy command.
	    t << "\n\t" << "@cd .";
	}
	t << endl << endl;
    }

    //installations
    project->variables()["INSTALLDEPS"]   += "install_subdirs";
    project->variables()["UNINSTALLDEPS"] += "uninstall_subdirs";
    writeInstalls(t, "INSTALLS");

    // user defined targets
    QStringList &qut = project->variables()["QMAKE_EXTRA_WIN_TARGETS"];
    for(QStringList::Iterator sit = qut.begin(); sit != qut.end(); ++sit) {
	QString targ = var((*sit) + ".target"),
		 cmd = var((*sit) + ".commands"), deps;
	if(targ.isEmpty())
	    targ = (*sit);
	QStringList &deplist = project->variables()[(*sit) + ".depends"];
	for(QStringList::Iterator dep_it = deplist.begin(); dep_it != deplist.end(); ++dep_it) {
	    QString dep = var((*dep_it) + ".target");
	    if(dep.isEmpty())
		dep = (*dep_it);
	    deps += " " + dep;
	}
	if(!project->variables()["QMAKE_NOFORCE"].isEmpty() && 
	   project->variables()[(*sit) + ".CONFIG"].findIndex("phony") != -1)
	    deps += QString(" ") + "FORCE";
	t << "\n\n" << targ << ":" << deps << "\n\t"
	  << cmd;
    }

    if(project->variables()["QMAKE_NOFORCE"].isEmpty())
	t << "FORCE:" << endl << endl;
}


int
Win32MakefileGenerator::findHighestVersion(const QString &d, const QString &stem)
{
    QString bd = Option::fixPathToLocalOS(d, TRUE);
    if(!QFile::exists(bd))
	return -1;
    if(!project->variables()["QMAKE_" + stem.upper() + "_VERSION_OVERRIDE"].isEmpty())
	return project->variables()["QMAKE_" + stem.upper() + "_VERSION_OVERRIDE"].first().toInt();

    QDir dir(bd);
    int biggest=-1;
    QStringList entries = dir.entryList();
    QString dllStem = stem + QTDLL_POSTFIX;
    QRegExp regx( "(" + dllStem + "([0-9]*)).lib", FALSE );
    for(QStringList::Iterator it = entries.begin(); it != entries.end(); ++it) {
	if(regx.exactMatch((*it)))
	    biggest = QMAX(biggest, (regx.cap(1) == dllStem ||
				     regx.cap(2).isEmpty()) ? -1 : regx.cap(2).toInt());
    }
    QMakeMetaInfo libinfo;
    if(libinfo.readLib(bd + "\\" + dllStem)) {
	QStringList prlConfig = libinfo.values("QMAKE_PRL_CONFIG");
	for ( QStringList::ConstIterator it = prlConfig.begin(); it != prlConfig.end(); it++ ) {
	    if ( (*it).contains("staticlib") )
		return -1;
	}
	if(!libinfo.isEmpty("QMAKE_PRL_VERSION"))
	    biggest = QMAX(biggest, libinfo.first("QMAKE_PRL_VERSION").replace(".", "").toInt());
    }
    return biggest;
}

QString
Win32MakefileGenerator::findDependency(const QString &dep)
{
    {
	QStringList &qut = project->variables()["QMAKE_EXTRA_WIN_TARGETS"];
	for(QStringList::Iterator it = qut.begin(); it != qut.end(); ++it) {
	    QString targ = var((*it) + ".target");
	    if(targ.isEmpty())
		targ = (*it);
	    if(targ.endsWith(dep)) 
		return targ;
	}
    }
    return MakefileGenerator::findDependency(dep);
}

bool
Win32MakefileGenerator::findLibraries(const QString &where)
{

    QStringList &l = project->variables()[where];
    QPtrList<MakefileDependDir> dirs;
    {
	QStringList &libpaths = project->variables()["QMAKE_LIBDIR"];
	for(QStringList::Iterator libpathit = libpaths.begin(); libpathit != libpaths.end(); ++libpathit) {
	    QString r = (*libpathit), l = r;
	    fixEnvVariables(l);
	    dirs.append(new MakefileDependDir(r.replace("\"",""), l.replace("\"","")));
	}
    }
    dirs.setAutoDelete(TRUE);
    for(QStringList::Iterator it = l.begin(); it != l.end(); ) {
	QChar quote;
	bool modified_opt = FALSE, remove = FALSE;
	QString opt = (*it).stripWhiteSpace();
	if((opt[0] == '\'' || opt[0] == '"') && opt[(int)opt.length()-1] == opt[0]) {
	    quote = opt[0];
	    opt = opt.mid(1, opt.length()-2);
	}
	if(opt.startsWith("/LIBPATH:")) {
            QString r = opt.mid(9), l = Option::fixPathToLocalOS(r);
            dirs.append(new MakefileDependDir(r.replace("\"",""),
                                              l.replace("\"","")));
        } else if(opt.startsWith("-L") || opt.startsWith("/L")) {
            QString r = opt.mid(2), l = Option::fixPathToLocalOS(r);
            dirs.append(new MakefileDependDir(r.replace("\"",""),
                                              l.replace("\"","")));
            remove = TRUE; //we eat this switch
        } else if(opt.startsWith("-l") || opt.startsWith("/l")) {
            QString lib = opt.right(opt.length() - 2), out;
            if(!lib.isEmpty()) {
                for(MakefileDependDir *mdd = dirs.first(); mdd; mdd = dirs.next() ) {
		    QString extension;
                    int ver = findHighestVersion(mdd->local_dir, lib);
		    if(ver > 0)
			extension += QString::number(ver);
		    extension += ".lib";
		    if(QMakeMetaInfo::libExists(mdd->local_dir + Option::dir_sep + lib) ||
		       QFile::exists(mdd->local_dir + Option::dir_sep + lib + extension)) {
			out = mdd->real_dir + Option::dir_sep + lib + extension;
			break;
		    }
                }
            }
            if(out.isEmpty()) {
                remove = TRUE; //just eat it since we cannot find one..
            } else {
		modified_opt = TRUE;
                (*it) = out;
	    }
        } else if(!QFile::exists(Option::fixPathToLocalOS(opt))) {
	    QPtrList<MakefileDependDir> lib_dirs;
	    QString file = opt;
            int slsh = file.findRev(Option::dir_sep);
            if(slsh != -1) {
                QString r = file.left(slsh+1), l = r;
		fixEnvVariables(l);
		lib_dirs.append(new MakefileDependDir(r.replace("\"",""), l.replace("\"","")));
                file = file.right(file.length() - slsh - 1);
            } else {
		lib_dirs = dirs;
	    }
	    if (!project->variables()["QMAKE_QT_DLL"].isEmpty()) {
		if(file.endsWith(".lib")) {
		    file = file.left(file.length() - 4);
		    if(!file.at(file.length()-1).isNumber()) {
			for(MakefileDependDir *mdd = lib_dirs.first(); mdd; mdd = lib_dirs.next() ) {
			    QString lib_tmpl(file + "%1" + ".lib");
			    int ver = findHighestVersion(mdd->local_dir, file);
			    if(ver != -1) {
				if(ver)
				    lib_tmpl = lib_tmpl.arg(ver);
				else
				     lib_tmpl = lib_tmpl.arg("");
				if(slsh != -1) {
				    QString dir = mdd->real_dir;
				    if(!dir.endsWith(Option::dir_sep))
					dir += Option::dir_sep;
				    lib_tmpl.prepend(dir);
				}
				modified_opt = TRUE;
				(*it) = lib_tmpl;
				break;
			    }
			}
		    }
		}
	    }
        }
        if(remove) {
            it = l.remove(it);
        } else {
	    if(!quote.isNull() && modified_opt)
		(*it) = quote + (*it) + quote;
            ++it;
	}
    }
    return TRUE;
}

void
Win32MakefileGenerator::processPrlFiles()
{
    QDict<void> processed;
    QPtrList<MakefileDependDir> libdirs;
    libdirs.setAutoDelete(TRUE);
    {
	QStringList &libpaths = project->variables()["QMAKE_LIBDIR"];
	for(QStringList::Iterator libpathit = libpaths.begin(); libpathit != libpaths.end(); ++libpathit) {
	    QString r = (*libpathit), l = r;
	    fixEnvVariables(l);
	    libdirs.append(new MakefileDependDir(r.replace("\"",""),
						 l.replace("\"","")));
	}
    }
    for(bool ret = FALSE; TRUE; ret = FALSE) {
	//read in any prl files included..
	QStringList l_out;
	QString where = "QMAKE_LIBS";
	if(!project->isEmpty("QMAKE_INTERNAL_PRL_LIBS"))
	    where = project->first("QMAKE_INTERNAL_PRL_LIBS");
	QStringList &l = project->variables()[where];
	for(QStringList::Iterator it = l.begin(); it != l.end(); ++it) {
	    QString opt = (*it);
	    if(opt.startsWith("/")) {
		if(opt.startsWith("/LIBPATH:")) {
		    QString r = opt.mid(9), l = r;
		    fixEnvVariables(l);
		    libdirs.append(new MakefileDependDir(r.replace("\"",""),
							 l.replace("\"","")));
		}
	    } else {
		if(!processed[opt]) {
		    if(processPrlFile(opt)) {
			processed.insert(opt, (void*)1);
			ret = TRUE;
		    } else {
			for(MakefileDependDir *mdd = libdirs.first(); mdd; mdd = libdirs.next() ) {
			    QString prl = mdd->local_dir + Option::dir_sep + opt;
			    if(processed[prl]) {
				break;
			    } else if(processPrlFile(prl)) {
				processed.insert(prl, (void*)1);
				ret = TRUE;
				break;
			    }
			}
		    }
		}
	    }
	    if(!opt.isEmpty())
		l_out.append(opt);
	}
	if(ret)
	    l = l_out;
	else
	    break;
    }
}
