Qtopia library API Documentation
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global.cpp

/**********************************************************************
** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
**
** This file is part of the Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** 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.
**
**********************************************************************/
#define QTOPIA_INTERNAL_LANGLIST
#include <qpe/qpedebug.h>
#include <qpe/global.h>
#include <qpe/qdawg.h>
#include <qpe/qpeapplication.h>
#include <qpe/resource.h>
#include <qpe/storage.h>
#include <qpe/applnk.h>
#include <qpe/qcopenvelope_qws.h>

#include <qfile.h>
#include <qlabel.h>
#include <qtimer.h>
#include <qmap.h>
#include <qdict.h>
#include <qdir.h>
#include <qmessagebox.h>
#include <qregexp.h>

#include <stdlib.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>

#include <qwindowsystem_qws.h> // for qwsServer
#include <qdatetime.h>

#include <qfile.h>

namespace {
  // checks if the storage should be searched
  bool checkStorage(const QString &path ){ // this is a small Config replacement cause config is too limited -zecke
    QFile file(path );
    if(!file.open(IO_ReadOnly ) )
       return true;

    QByteArray array = file.readAll();
    QStringList list = QStringList::split('\n', QString( array ) );
    for(QStringList::Iterator it = list.begin(); it != list.end(); ++it ){
      if( (*it).startsWith("autocheck = 0" ) ){
    return false;
      }else if( (*it).startsWith("autocheck = 1" ) ){
    return true;
      }
    }
    return true;
  }
}

//#include "quickexec_p.h"

class Emitter : public QObject {
    Q_OBJECT
public:
    Emitter( QWidget* receiver, const QString& document )
    {
    connect(this, SIGNAL(setDocument(const QString&)),
        receiver, SLOT(setDocument(const QString&)));
    emit setDocument(document);
    disconnect(this, SIGNAL(setDocument(const QString&)),
           receiver, SLOT(setDocument(const QString&)));
    }

signals:
    void setDocument(const QString&);
};


class StartingAppList : public QObject {
    Q_OBJECT
public:
    static void add( const QString& name );
    static bool isStarting( const QString name );
private slots:
    void handleNewChannel( const QString &);
private:
    StartingAppList( QObject *parent=0, const char* name=0 ) ;

    QDict<QTime> dict;
    static StartingAppList *appl;
};

StartingAppList* StartingAppList::appl = 0;

StartingAppList::StartingAppList( QObject *parent, const char* name )
    :QObject( parent, name )
{
#if QT_VERSION >= 232 && defined(QWS)
    connect( qwsServer, SIGNAL( newChannel(const QString&)),
         this, SLOT( handleNewChannel(const QString&)) );
#endif
    dict.setAutoDelete( TRUE );
}

void StartingAppList::add( const QString& name )
{
#if QT_VERSION >= 232  && !defined(QT_NO_COP)
    if ( !appl )
    appl = new StartingAppList;
    QTime *t = new QTime;
    t->start();
    appl->dict.insert( "QPE/Application/" + name, t );
#endif
}

bool StartingAppList::isStarting( const QString name )
{
#if QT_VERSION >= 232  && !defined(QT_NO_COP)
    if ( appl ) {
    QTime *t  = appl->dict.find( "QPE/Application/" + name );
    if ( !t )
        return FALSE;
    if ( t->elapsed() > 10000 ) {
        // timeout in case of crash or something
        appl->dict.remove( "QPE/Application/" + name );
        return FALSE;
    }
    return TRUE;
    }
#endif
    return FALSE;
}

void StartingAppList::handleNewChannel( const QString & name )
{
#if QT_VERSION >= 232  && !defined(QT_NO_COP)
    dict.remove( name );
#endif
}

static bool docDirCreated = FALSE;
static QDawg* fixed_dawg = 0;
static QDict<QDawg> *named_dawg = 0;

static QString qpeDir()
{
    QString dir = getenv("OPIEDIR");
    if ( dir.isEmpty() ) dir = "..";
    return dir;
}

static QString dictDir()
{
    return qpeDir() + "/etc/dict";
}

Global::Global()
{
}

const QDawg& Global::fixedDawg()
{
    if ( !fixed_dawg ) {
    if ( !docDirCreated )
        createDocDir();

    fixed_dawg = new QDawg;
    QString dawgfilename = dictDir() + "/dawg";
    QString words_lang;
    QStringList langs = Global::languageList();
    for (QStringList::ConstIterator it = langs.begin(); it!=langs.end(); ++it) {
        QString lang = *it;
        words_lang = dictDir() + "/words." + lang;
        QString dawgfilename_lang = dawgfilename + "." + lang;
        if ( QFile::exists(dawgfilename_lang) ||
         QFile::exists(words_lang) ) {
        dawgfilename = dawgfilename_lang;
        break;
        }
    }
    QFile dawgfile(dawgfilename);

    if ( !dawgfile.exists() ) {
        QString fn = dictDir() + "/words";
        if ( QFile::exists(words_lang) )
        fn = words_lang;
        QFile in(fn);
        if ( in.open(IO_ReadOnly) ) {
        fixed_dawg->createFromWords(&in);
        dawgfile.open(IO_WriteOnly);
        fixed_dawg->write(&dawgfile);
        dawgfile.close();
        }
    } else {
        fixed_dawg->readFile(dawgfilename);
    }
    }

    return *fixed_dawg;
}

const QDawg& Global::addedDawg()
{
    return dawg("local");
}

const QDawg& Global::dawg(const QString& name)
{
    createDocDir();
    if ( !named_dawg )
    named_dawg = new QDict<QDawg>;
    QDawg* r = named_dawg->find(name);
    if ( !r ) {
    r = new QDawg;
    named_dawg->insert(name,r);
    QString dawgfilename = applicationFileName("Dictionary", name ) + ".dawg";
    QFile dawgfile(dawgfilename);
    if ( dawgfile.open(IO_ReadOnly) )
        r->readFile(dawgfilename);
    }
    return *r;
}

void Global::addWords(const QStringList& wordlist)
{
    addWords("local",wordlist);
}

void Global::addWords(const QString& dictname, const QStringList& wordlist)
{
    QDawg& d = (QDawg&)dawg(dictname);
    QStringList all = d.allWords() + wordlist;
    d.createFromWords(all);

    QString dawgfilename = applicationFileName("Dictionary", dictname) + ".dawg";
    QFile dawgfile(dawgfilename);
    if ( dawgfile.open(IO_WriteOnly) ) {
    d.write(&dawgfile);
    dawgfile.close();
    }

    // #### Re-read the dawg here if we use mmap().

    // #### Signal other processes to re-read.
}


QString Global::applicationFileName(const QString& appname, const QString& filename)
{
    QDir d;
    QString r = getenv("HOME");
    r += "/Applications/";
    if ( !QFile::exists( r ) )
    if ( d.mkdir(r) == false )
        return QString::null;
    r += appname;
    if ( !QFile::exists( r ) )
    if ( d.mkdir(r) == false )
        return QString::null;
    r += "/"; r += filename;
    return r;
}

void Global::createDocDir()
{
    if ( !docDirCreated ) {
    docDirCreated = TRUE;
    mkdir( QPEApplication::documentDir().latin1(), 0755 );
    }
}


void Global::statusMessage(const QString& message)
{
#if !defined(QT_NO_COP)
    QCopEnvelope e( "QPE/TaskBar", "message(QString)" );
    e << message;
#endif
}

void Global::applyStyle()
{
#if !defined(QT_NO_COP)
    QCopChannel::send( "QPE/System", "applyStyle()" );
#else
    ((QPEApplication *)qApp)->applyStyle(); // apply without needing QCop for floppy version
#endif
}

QWidget *Global::shutdown( bool )
{
#if !defined(QT_NO_COP)
    QCopChannel::send( "QPE/System", "shutdown()" );
#endif
    return 0;
}

QWidget *Global::restart( bool )
{
#if !defined(QT_NO_COP)
    QCopChannel::send( "QPE/System", "restart()" );
#endif
    return 0;
}

void Global::showInputMethod()
{
#if !defined(QT_NO_COP)
    QCopChannel::send( "QPE/TaskBar", "showInputMethod()" );
#endif
}

void Global::hideInputMethod()
{
#if !defined(QT_NO_COP)
    QCopChannel::send( "QPE/TaskBar", "hideInputMethod()" );
#endif
}


bool Global::isBuiltinCommand( const QString &name )
{
    if(!builtin)
    return FALSE; // yes, it can happen
    for (int i = 0; builtin[i].file; i++) {
    if ( builtin[i].file == name ) {
        return TRUE;
    }
    }
    return FALSE;
}

Global::Command* Global::builtin=0;
QGuardedPtr<QWidget> *Global::running=0;

void Global::setBuiltinCommands( Command* list )
{
    if ( running )
    delete [] running;

    builtin = list;
    int count = 0;
    if (!builtin)
    return;
    while ( builtin[count].file )
    count++;

    running = new QGuardedPtr<QWidget> [ count ];
}

void Global::setDocument( QWidget* receiver, const QString& document )
{
    Emitter emitter(receiver,document);
}

bool Global::terminateBuiltin( const QString& n )
{
    if (!builtin)
    return FALSE;
    for (int i = 0; builtin[i].file; i++) {
    if ( builtin[i].file == n ) {
        delete running[i];
        return TRUE;
    }
    }
    return FALSE;
}

void Global::terminate( const AppLnk* app )
{
    //if ( terminateBuiltin(app->exec()) ) return; // maybe? haven't tried this

#ifndef QT_NO_COP
    QCString channel = "QPE/Application/" + app->exec().utf8();
    if ( QCopChannel::isRegistered(channel) ) {
    QCopEnvelope e(channel, "quit()");
    }
#endif
}

void Global::invoke(const QString &c)
{
    // Convert the command line in to a list of arguments
    QStringList list = QStringList::split(QRegExp("  *"),c);

#if !defined(QT_NO_COP)
    QString ap=list[0];
    // see if the application is already running
    // XXX should lock file /tmp/qcop-msg-ap
    if ( QCopChannel::isRegistered( ("QPE/Application/" + ap).latin1() ) ) {
    // If the channel is already register, the app is already running, so show it.
    { QCopEnvelope env( ("QPE/Application/" + ap).latin1(), "raise()" ); }

    //QCopEnvelope e("QPE/System", "notBusy(QString)" );
    //e << ap;
    return;
    }
    // XXX should unlock file /tmp/qcop-msg-ap
    //see if it is being started
    if ( StartingAppList::isStarting( ap ) ) {
        // FIXME take it out for now, since it leads to a much to short showing of wait if
        // some entry is clicked.
        // Real cause is that ::execute is called twice for document tab. But it would need some larger changes
        // to fix that, and with future syncs with qtopia 1.6 it will change anyway big time since somebody there
        // had the idea that an apploader belongs to the launcher ...
    //QCopEnvelope e("QPE/System", "notBusy(QString)" );
    //e << ap;
    return;
    }

#endif

#ifdef QT_NO_QWS_MULTIPROCESS
    QMessageBox::warning( 0, "Error", "Could not find the application " + c, "Ok", 0, 0, 0, 1 );
#else

    QStrList slist;
    unsigned int j;
    for ( j = 0; j < list.count(); j++ )
    slist.append( list[j].utf8() );

    const char **args = new (const char *)[slist.count() + 1];
    for ( j = 0; j < slist.count(); j++ )
    args[j] = slist.at(j);
    args[j] = NULL;

#if !defined(QT_NO_COP)
    // an attempt to show a wait...
    // more logic should be used, but this will be fine for the moment...
    QCopEnvelope ( "QPE/System", "busy()" );
#endif

#ifdef HAVE_QUICKEXEC
#ifdef Q_OS_MACX
    QString libexe = qpeDir()+"/binlib/lib"+args[0] + ".dylib";
#else
    QString libexe = qpeDir()+"/binlib/lib"+args[0] + ".so";
#endif
    qDebug("libfile = %s", libexe.latin1() );
    if ( QFile::exists( libexe ) ) {
    qDebug("calling quickexec %s", libexe.latin1() );
    quickexecv( libexe.utf8().data(), (const char **)args );
    } else
#endif
    {
        bool success = false;
        int pfd [2];
        if ( ::pipe ( pfd ) < 0 )
            pfd [0] = pfd [1] = -1;

        pid_t pid = ::fork ( );

        if ( pid == 0 ) { // child
            for ( int fd = 3; fd < 100; fd++ ) {
                if ( fd != pfd [1] )
                    ::close ( fd );
            }
            ::setpgid ( ::getpid ( ), ::getppid ( ));

            // Closing of fd[1] indicates that the execvp succeeded!
            if ( pfd [1] >= 0 )
                ::fcntl ( pfd [1], F_SETFD, FD_CLOEXEC );

            // Try bindir first, so that foo/bar works too
            ::execv ( qpeDir ( ) + "/bin/" + args [0], (char * const *) args );
            ::execvp ( args [0], (char * const *) args );

            char resultByte = 1;
            if ( pfd [1] >= 0 )
                ::write ( pfd [1], &resultByte, 1 );
            ::_exit ( -1 );
        }
        else if ( pid > 0 ) {
            success = true;

            if ( pfd [1] >= 0 )
                ::close ( pfd [1] );
            if ( pfd [0] >= 0 ) {
                while ( true ) {
                    char resultByte;
                    int n = ::read ( pfd [0], &resultByte, 1 );
                    if ( n == 1 ) {
                        success = false;
                        break;
                    }
                    if (( n == -1 ) && (( errno == ECHILD ) || ( errno == EINTR )))
                        continue;

                    break; // success
                }
                ::close ( pfd [0] );
            }
        }
        if ( success )
            StartingAppList::add( list[0] );
        else
            QMessageBox::warning( 0, "Error", "Could not start the application " + c, "Ok", 0, 0, 0, 1 );
    }
#endif //QT_NO_QWS_MULTIPROCESS
}


void Global::execute( const QString &c, const QString& document )
{
    // ask the server to do the work
#if !defined(QT_NO_COP)
    if ( document.isNull() ) {
        QCopEnvelope e( "QPE/System", "execute(QString)" );
        e << c;
    } else {
        QCopEnvelope e( "QPE/System", "execute(QString,QString)" );
        e << c << document;
    }
#endif
    return;
}

QString Global::shellQuote(const QString& s)
{
    QString r="\"";
    for (int i=0; i<(int)s.length(); i++) {
    char c = s[i].latin1();
    switch (c) {
        case '\\': case '"': case '$':
        r+="\\";
    }
    r += s[i];
    }
    r += "\"";
    return r;
}

QString Global::stringQuote(const QString& s)
{
    QString r="\"";
    for (int i=0; i<(int)s.length(); i++) {
    char c = s[i].latin1();
    switch (c) {
        case '\\': case '"':
        r+="\\";
    }
    r += s[i];
    }
    r += "\"";
    return r;
}

void Global::findDocuments(DocLnkSet* folder, const QString &mimefilter)
{
    QString homedocs = QString(getenv("HOME")) + "/Documents";
    DocLnkSet d(homedocs,mimefilter);
    folder->appendFrom(d);
    StorageInfo storage;
    const QList<FileSystem> &fs = storage.fileSystems();
    QListIterator<FileSystem> it ( fs );
    for ( ; it.current(); ++it ) {
      if ( (*it)->isRemovable() ) { // let's find out  if we should search on it
    // this is a candidate look at the cf and see if we should search on it
    QString path = (*it)->path();
    if( !checkStorage((*it)->path() + "/.opiestorage.cf" ) )
      continue;
    DocLnkSet ide( path, mimefilter );
    folder->appendFrom(ide);
      } else if ( (*it)->disk() == "/dev/mtdblock6" || (*it)->disk() == "tmpfs" ) {
    QString path = (*it)->path() + "/Documents";
    DocLnkSet ide( path, mimefilter );
    folder->appendFrom(ide);
      }
    }
}

QStringList Global::languageList()
{
    QString lang = getenv("LANG");
    QStringList langs;
    langs.append(lang);
    int i  = lang.find(".");
    if ( i > 0 )
    lang = lang.left( i );
    i = lang.find( "_" );
    if ( i > 0 )
    langs.append(lang.left(i));
    return langs;
}

QStringList Global::helpPath()
{
    QString qpeDir = QPEApplication::qpeDir();
    QStringList path;
    QStringList langs = Global::languageList();
    for (QStringList::ConstIterator it = langs.fromLast(); it!=langs.end(); --it) {
    QString lang = *it;
    if ( !lang.isEmpty() )
        path += qpeDir + "/help/" + lang + "/html";
    }
    path += qpeDir + "/pics";
    path += qpeDir + "/help/html";
    /* we even put english into the en dir so try it as fallback as well for opie */
    path += qpeDir + "/help/en/html";
    path += qpeDir + "/docs";


    return path;
}


#include "global.moc"

This file is part of the documentation for OPIE Version 1.5.5.

Documentation copyright © 1997-2003 the KDE developers. 2003 OPIE developers
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