kdecore Library: kprocio.cpp Source File (kdecore Library)

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# kprocio.cpp

    00001 /* This file is part of the KDE libraries
    00002    Copyright (C) 1997 David Sweet <dsweet@kde.org>
    00003
    00004    This library is free software; you can redistribute it and/or
    00005    modify it under the terms of the GNU Library General Public
    00006    License version 2 as published by the Free Software Foundation.
    00007
    00008    This library is distributed in the hope that it will be useful,
    00009    but WITHOUT ANY WARRANTY; without even the implied warranty of
    00010    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00011    Library General Public License for more details.
    00012
    00013    You should have received a copy of the GNU Library General Public License
    00014    along with this library; see the file COPYING.LIB.  If not, write to
    00015    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    00016    Boston, MA 02111-1307, USA.
    00017 */
    00018
    00019 // $Id: kprocio.cpp 279789 2004-01-14 22:45:07Z waba $
    00020
    00021 #ifdef HAVE_CONFIG_H
    00022 #include <config.h>
    00023 #endif
    00024
    00025 #include <stdio.h>
    00026
    00027 #include "kprocio.h"
    00028
    00029 #include <kdebug.h>
    00030 #include <qtextcodec.h>
    00031
    00032 class KProcIOPrivate {
    00033 public:
    00034   KProcIOPrivate() : comm(KProcess::All) {}
    00035   KProcess::Communication comm;
    00036 };
    00037
    00038 KProcIO::KProcIO ( QTextCodec *_codec)
    00039   : codec(_codec), d(new KProcIOPrivate)
    00040 {
    00041   rbi=0;
    00042   readsignalon=writeready=true;
    00043   outbuffer.setAutoDelete(true);
    00044
    00045   if (!codec)
    00046   {
    00047      codec = QTextCodec::codecForName("ISO 8859-1");
    00048      if (!codec)
    00049      {
    00050         kdError(174) << "Can't create ISO 8859-1 codec!" << endl;
    00051      }
    00052   }
    00053 }
    00054
    00055 KProcIO::~KProcIO()
    00056 {
    00057   delete d;
    00058 }
    00059
    00060 void
    00061 KProcIO::resetAll ()
    00062 {
    00063   if (isRunning())
    00064      kill();
    00065
    00066   clearArguments();
    00067   rbi=0;
    00068   readsignalon=writeready=true;
    00069
    00070   disconnect (this, SIGNAL (receivedStdout (KProcess *, char *, int)),
    00071        this, SLOT (received (KProcess *, char *, int)));
    00072
    00073   disconnect (this, SIGNAL (receivedStderr (KProcess *, char *, int)),
    00074        this, SLOT (received (KProcess *, char *, int)));
    00075
    00076   disconnect (this, SIGNAL (wroteStdin(KProcess *)),
    00077        this, SLOT (sent (KProcess *)));
    00078
    00079   outbuffer.clear();
    00080
    00081 }
    00082
    00083 void KProcIO::setComm (Communication comm)
    00084 {
    00085   d->comm = comm;
    00086 }
    00087
    00088 bool KProcIO::start (RunMode runmode, bool includeStderr)
    00089 {
    00090   connect (this, SIGNAL (receivedStdout (KProcess *, char *, int)),
    00091        this, SLOT (received (KProcess *, char *, int)));
    00092
    00093   if (includeStderr)
    00094   {
    00095      connect (this, SIGNAL (receivedStderr (KProcess *, char *, int)),
    00096               this, SLOT (received (KProcess *, char *, int)));
    00097   }
    00098
    00099   connect (this, SIGNAL (wroteStdin(KProcess *)),
    00100        this, SLOT (sent (KProcess *)));
    00101
    00102   return KProcess::start (runmode, d->comm);
    00103 }
    00104
    00105 bool KProcIO::writeStdin (const QString &line, bool appendnewline)
    00106 {
    00107   return writeStdin(codec->fromUnicode(line), appendnewline);
    00108 }
    00109
    00110 bool KProcIO::writeStdin (const QCString &line, bool appendnewline)
    00111 {
    00112   QCString *qs = new QCString(line);
    00113
    00114   if (appendnewline)
    00115   {
    00116      *qs += '\n';
    00117   }
    00118
    00119   int l = qs->length();
    00120   if (!l)
    00121   {
    00122      delete qs;
    00123      return true;
    00124   }
    00125
    00126   QByteArray *b = (QByteArray *) qs;
    00127   b->truncate(l); // Strip trailing null
    00128
    00129   outbuffer.append(b);
    00130
    00131   if (writeready)
    00132   {
    00133      writeready=false;
    00134      return KProcess::writeStdin( b->data(), b->size() );
    00135   }
    00136   return true;
    00137 }
    00138
    00139 bool KProcIO::writeStdin(const QByteArray &data)
    00140 {
    00141   if (!data.size())
    00142      return true;
    00143   QByteArray *b = new QByteArray(data);
    00144   outbuffer.append(b);
    00145
    00146   if (writeready)
    00147   {
    00148      writeready=false;
    00149      return KProcess::writeStdin( b->data(), b->size() );
    00150   }
    00151   return true;
    00152 }
    00153
    00154 void KProcIO::closeWhenDone()
    00155 {
    00156   if (writeready)
    00157   {
    00158      closeStdin();
    00159      return;
    00160   }
    00161   outbuffer.append(0);
    00162
    00163   return;
    00164 }
    00165
    00166 void KProcIO::sent(KProcess *)
    00167 {
    00168   outbuffer.removeFirst();
    00169
    00170   if (outbuffer.count()==0)
    00171   {
    00172      writeready=true;
    00173   }
    00174   else
    00175   {
    00176      QByteArray *b = outbuffer.first();
    00177      if (!b)
    00178      {
    00179         closeStdin();
    00180      }
    00181      else
    00182      {
    00183         KProcess::writeStdin(b->data(), b->size());
    00184      }
    00185   }
    00186
    00187 }
    00188
    00189 void KProcIO::received (KProcess *, char *buffer, int buflen)
    00190 {
    00191   recvbuffer += QCString(buffer, buflen+1);
    00192
    00193   controlledEmission();
    00194 }
    00195
    00196 void KProcIO::ackRead ()
    00197 {
    00198   readsignalon=true;
    00199   if (needreadsignal || recvbuffer.length()!=0)
    00200      controlledEmission();
    00201 }
    00202
    00203 void KProcIO::controlledEmission ()
    00204 {
    00205   if (readsignalon)
    00206   {
    00207      needreadsignal=false;
    00208      readsignalon=false; //will stay off until read is acknowledged
    00209      emit readReady (this);
    00210   }
    00211   else
    00212   {
    00213     needreadsignal=true;
    00214   }
    00215 }
    00216
    00217 void KProcIO::enableReadSignals (bool enable)
    00218 {
    00219   readsignalon=enable;
    00220
    00221   if (enable && needreadsignal)
    00222      emit readReady (this);
    00223 }
    00224
    00225 int KProcIO::readln (QString &line, bool autoAck, bool *partial)
    00226 {
    00227   int len;
    00228
    00229   if (autoAck)
    00230      readsignalon=true;
    00231
    00232   //need to reduce the size of recvbuffer at some point...
    00233
    00234   len=recvbuffer.find ('\n',rbi)-rbi;
    00235
    00236   //kdDebug(174) << "KPIO::readln" << endl;
    00237
    00238   //in case there's no '\n' at the end of the buffer
    00239   if ((len<0) &&
    00240       ((unsigned int)rbi<recvbuffer.length()))
    00241   {
    00242      recvbuffer=recvbuffer.mid (rbi);
    00243      rbi=0;
    00244      if (partial)
    00245      {
    00246         len = recvbuffer.length();
    00247         line = recvbuffer;
    00248         recvbuffer = "";
    00249         *partial = true;
    00250         return len;
    00251      }
    00252      return -1;
    00253   }
    00254
    00255   if (len>=0)
    00256   {
    00257      line = codec->toUnicode(recvbuffer.mid(rbi,len), len);
    00258      rbi += len+1;
    00259      if (partial)
    00260         *partial = false;
    00261      return len;
    00262   }
    00263
    00264   recvbuffer="";
    00265   rbi=0;
    00266
    00267   //-1 on return signals "no more data" not error
    00268   return -1;
    00269
    00270 }
    00271
    00272 void KProcIO::virtual_hook( int id, void* data )
    00273 { KProcess::virtual_hook( id, data ); }
    00274
    00275 #include "kprocio.moc"
    00276

This file is part of the documentation for kdecore Library Version 3.4.1.
Documentation copyright © 1996-2004 the KDE developers.
Generated on Sat Jun 11 20:18:09 2005 by doxygen 1.4.1 written by Dimitri van Heesch, © 1997-2003