okular/main.cpp

#include <dcopclient.h>
#include <dcopref.h>
#include <kapplication.h>
#include <kcmdlineargs.h>
#include <kdebug.h>
#include <kurl.h>
#include <klocale.h>
#include <kaboutdata.h>
#include <qdir.h>

#include <stdlib.h>

#include "kviewshell.h"


static KCmdLineOptions options[] =
{
  { "unique", I18N_NOOP("Check if the file is loaded in another KDVI. If it is, bring up the other KDVI. Otherwise, load the file."), 0 },
  { "paper ", I18N_NOOP("Sets paper size (not implemented at the moment, only for compatibility with lyx)"), 0 },
  { "+file(s)", I18N_NOOP("Files to load"), 0 },
  KCmdLineLastOption
};


static const char description[] = I18N_NOOP("A previewer for Device Independent files (DVI files) produced by the TeX typesetting system.");


int main(int argc, char** argv)
{
  KAboutData about ("kdvi", I18N_NOOP("KDVI"), "1.2",
                    description, KAboutData::License_GPL,
                    "Markku Hinhala, Stephan Kebekus",
                    I18N_NOOP("Displays Device Independent (DVI) files."
                    "Based on original code from kdvi version 0.43 and xdvik."));

  about.addAuthor ("Stefan Kebekus",
                   I18N_NOOP("Current Maintainer.\n"
                             "Major rewrite of version 0.4.3.\n"
                             "Implementation of hyperlinks. "),
                   "kebekus@kde.org",
                   "http://www.mi.uni-koeln.de/~kebekus");

  about.addAuthor ("Markku Hinhala",
                   I18N_NOOP("Author of kdvi 0.4.3"));

  about.addAuthor ("Nicolai Langfeldt",
                   I18N_NOOP("Maintainer of xdvik"));

  about.addAuthor ("Paul Vojta",
                   I18N_NOOP("Author of xdvi"));

  about.addCredit ("Philipp Lehmann",
                   I18N_NOOP("testing and bug reporting."));

  KCmdLineArgs::init(argc, argv, &about);
  KCmdLineArgs::addCmdLineOptions(options);
  KApplication app;
  KCmdLineArgs* args = KCmdLineArgs::parsedArgs();

  if (args->isSet("unique"))
  {
    // With --unique, we need 2 arguments.
    if (args->count() < 1) 
    {
      args->usage();
      exit(-1);
    }

    // Find the fully qualified file name of the file we are
    // loading. Complain, if we are given a URL which does not point
    // to a local file.
    KURL url(args->url(0));

    if (!args->url(0).isValid()) 
    {
      kdError(4300) << QString(I18N_NOOP("The URL %1 is not well-formed.")).arg(args->arg(0)) << endl;
      return -1;
    }

    if (!args->url(0).isLocalFile()) 
    {
      kdError(4300) << QString(I18N_NOOP("The URL %1 does not point to a local file. You can only specify local "
           "files if you are using the '--unique' option.")).arg(args->arg(0)) << endl;
      return -1;
    }


    QString qualPath = QFileInfo(args->url(1).path()).absFilePath();

    app.dcopClient()->attach();
    // We need to register as "kviewshell" to stay compatible with existing DCOP-skripts.
    QCString id = app.dcopClient()->registerAs("unique-kviewshell");
    if (id.isNull())
      kdError(4300) << "There was an error using dcopClient()->registerAs()." << endl;
    QCStringList apps = app.dcopClient()->registeredApplications();
    for ( QCStringList::Iterator it = apps.begin(); it != apps.end(); ++it ) 
    {
      if ((*it).find("kdvi") == 0) 
      {
        QByteArray data, replyData;
        QCString replyType;
        QDataStream arg(data, IO_WriteOnly);
        bool result;
        arg << qualPath.stripWhiteSpace();
        if (!app.dcopClient()->call( *it, "kmultipage", "is_file_loaded(QString)", data, replyType, replyData))
          kdError(4300) << "There was an error using DCOP." << endl;
        else 
        {
          QDataStream reply(replyData, IO_ReadOnly);
          if (replyType == "bool") 
          {
            reply >> result;
            if (result == true) 
            {
              if (app.dcopClient()->send( *it, "kmultipage", "jumpToReference(QString)", args->url(0).ref()) == true)
              {
                app.dcopClient()->detach();
                return 0;
              }
            }
          }
          else
            kdError(4300) << "The DCOP function 'doIt' returned an unexpected type of reply!";
        }
      }
    }
  }

  // We need to register as "kviewshell" to stay compatible with existing DCOP-skripts.
  app.dcopClient()->registerAs("kviewshell");
  KViewShell* shell = new KViewShell("dvi");

  if (args->count() > 0)
    shell->openURL(args->url(0));

  shell->show();
  return app.exec();
}