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,v 1.26 2002/07/22 19:30:03 pfeiffer Exp $
    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 KProcIO::KProcIO ( QTextCodec *_codec)
    00033   : codec(_codec)
    00034 {
    00035   rbi=0;
    00036   readsignalon=writeready=TRUE;
    00037   outbuffer.setAutoDelete(true);
    00038
    00039   if (!codec)
    00040   {
    00041      codec = QTextCodec::codecForName("ISO 8859-1");
    00042      if (!codec)
    00043      {
    00044         kdError(174) << "Can't create ISO 8859-1 codec!" << endl;
    00045      }
    00046   }
    00047 }
    00048
    00049 KProcIO::~KProcIO()
    00050 {
    00051 }
    00052
    00053 void
    00054 KProcIO::resetAll ()
    00055 {
    00056   if (isRunning())
    00057      kill();
    00058
    00059   clearArguments();
    00060   rbi=0;
    00061   readsignalon=writeready=TRUE;
    00062
    00063   disconnect (this, SIGNAL (receivedStdout (KProcess *, char *, int)),
    00064            this, SLOT (received (KProcess *, char *, int)));
    00065
    00066   disconnect (this, SIGNAL (receivedStderr (KProcess *, char *, int)),
    00067            this, SLOT (received (KProcess *, char *, int)));
    00068
    00069   disconnect (this, SIGNAL (wroteStdin(KProcess *)),
    00070            this, SLOT (sent (KProcess *)));
    00071
    00072   outbuffer.clear();
    00073
    00074 }
    00075
    00076 bool KProcIO::start (RunMode runmode, bool includeStderr)
    00077 {
    00078   connect (this, SIGNAL (receivedStdout (KProcess *, char *, int)),
    00079            this, SLOT (received (KProcess *, char *, int)));
    00080
    00081   if (includeStderr)
    00082   {
    00083      connect (this, SIGNAL (receivedStderr (KProcess *, char *, int)),
    00084               this, SLOT (received (KProcess *, char *, int)));
    00085   }
    00086
    00087   connect (this, SIGNAL (wroteStdin(KProcess *)),
    00088            this, SLOT (sent (KProcess *)));
    00089
    00090   return KProcess::start (runmode, KProcess::All);
    00091 }
    00092
    00093 bool KProcIO::writeStdin (const QString &line, bool appendnewline)
    00094 {
    00095   return writeStdin(codec->fromUnicode(line), appendnewline);
    00096 }
    00097
    00098 bool KProcIO::writeStdin (const QCString &line, bool appendnewline)
    00099 {
    00100   QCString *qs = new QCString(line);
    00101
    00102   if (appendnewline)
    00103   {
    00104      *qs += '\n';
    00105   }
    00106
    00107   int l = qs->length();
    00108   if (!l)
    00109   {
    00110      delete qs;
    00111      return true;
    00112   }
    00113
    00114   QByteArray *b = (QByteArray *) qs;
    00115   b->truncate(l); // Strip trailing null
    00116
    00117   outbuffer.append(b);
    00118
    00119   if (writeready)
    00120   {
    00121      writeready=FALSE;
    00122      return KProcess::writeStdin( b->data(), b->size() );
    00123   }
    00124   return true;
    00125 }
    00126
    00127 bool KProcIO::writeStdin(const QByteArray &data)
    00128 {
    00129   if (!data.size())
    00130      return true;
    00131   QByteArray *b = new QByteArray(data);
    00132   outbuffer.append(b);
    00133
    00134   if (writeready)
    00135   {
    00136      writeready=FALSE;
    00137      return KProcess::writeStdin( b->data(), b->size() );
    00138   }
    00139   return true;
    00140 }
    00141
    00142 void KProcIO::closeWhenDone()
    00143 {
    00144   if (writeready)
    00145   {
    00146      closeStdin();
    00147      return;
    00148   }
    00149   outbuffer.append(0);
    00150
    00151   return;
    00152 }
    00153
    00154 void KProcIO::sent(KProcess *)
    00155 {
    00156   outbuffer.removeFirst();
    00157
    00158   if (outbuffer.count()==0)
    00159   {
    00160      kdDebug(174) << "Empty" << endl;
    00161      writeready=TRUE;
    00162   }
    00163   else
    00164   {
    00165      QByteArray *b = outbuffer.first();
    00166      if (!b)
    00167      {
    00168         kdDebug(174) << "Closing" << endl;
    00169         closeStdin();
    00170      }
    00171      else
    00172      {
    00173         kdDebug(174) << "Sending [" << b->size() << "]" << endl;
    00174         KProcess::writeStdin(b->data(), b->size());
    00175      }
    00176   }
    00177
    00178 }
    00179
    00180 void KProcIO::received (KProcess *, char *buffer, int buflen)
    00181 {
    00182   recvbuffer += QCString(buffer, buflen+1);
    00183
    00184   controlledEmission();
    00185 }
    00186
    00187 void KProcIO::ackRead ()
    00188 {
    00189   readsignalon=TRUE;
    00190   if (needreadsignal || recvbuffer.length()!=0)
    00191      controlledEmission();
    00192 }
    00193
    00194 void KProcIO::controlledEmission ()
    00195 {
    00196   if (readsignalon)
    00197   {
    00198      needreadsignal=FALSE;
    00199      readsignalon=FALSE; //will stay off until read is acknowledged
    00200      emit readReady (this);
    00201   }
    00202   else
    00203   {
    00204     needreadsignal=TRUE;
    00205   }
    00206 }
    00207
    00208 void KProcIO::enableReadSignals (bool enable)
    00209 {
    00210   readsignalon=enable;
    00211
    00212   if (enable && needreadsignal)
    00213      emit readReady (this);
    00214 }
    00215
    00216 int KProcIO::readln (QString &line, bool autoAck, bool *partial)
    00217 {
    00218   int len;
    00219
    00220   if (autoAck)
    00221      readsignalon=TRUE;
    00222
    00223   //need to reduce the size of recvbuffer at some point...
    00224
    00225   len=recvbuffer.find ('\n',rbi)-rbi;
    00226
    00227   kdDebug(174) << "KPIO::readln" << endl;
    00228
    00229   //in case there's no '\n' at the end of the buffer
    00230   if ((len<0) &&
    00231       ((unsigned int)rbi<recvbuffer.length()))
    00232   {
    00233      recvbuffer=recvbuffer.mid (rbi,recvbuffer.length()-rbi);
    00234      rbi=0;
    00235      if (partial)
    00236      {
    00237         len = recvbuffer.length();
    00238         line = recvbuffer;
    00239         recvbuffer = "";
    00240         *partial = true;
    00241         return len;
    00242      }
    00243      return -1;
    00244   }
    00245
    00246   if (len>=0)
    00247   {
    00248      line = codec->toUnicode(recvbuffer.mid(rbi,len), len);
    00249      rbi += len+1;
    00250      if (partial)
    00251         *partial = false;
    00252      return len;
    00253   }
    00254
    00255   recvbuffer="";
    00256   rbi=0;
    00257
    00258   //-1 on return signals "no more data" not error
    00259   return -1;
    00260
    00261 }
    00262
    00263 void KProcIO::virtual_hook( int id, void* data )
    00264 { KProcess::virtual_hook( id, data ); }
    00265
    00266 #include "kprocio.moc"
    00267

This file is part of the documentation for kdelibs Version 3.1.5.
Documentation copyright © 1996-2002 the KDE developers.
Generated on Wed Jan 28 12:46:47 2004 by doxygen 1.3.4 written by Dimitri van Heesch, © 1997-2001