1 files changed, 159 insertions, 0 deletions
diff --git a/kdecore/kqiodevicegzip_p.cpp b/kdecore/kqiodevicegzip_p.cpp
new file mode 100644
index 000000000..cb0cd2fe6
--- /dev/null
+++ b/kdecore/kqiodevicegzip_p.cpp
@@ -0,0 +1,159 @@
+/* This file is part of the KDE project
+   Copyright (C) 2001,2005 Nicolas GOUTTE <nicog@snafu.de>
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.
+*/
+
+// TODO: more error report and control
+
+#include <qstring.h>
+#include "kqiodevicegzip_p.h"
+
+KQIODeviceGZip::KQIODeviceGZip(const QString& filename)
+{
+    m_gzfile=0;
+    m_ungetchar=-1;
+    m_filename=filename;
+    setFlags(IO_Sequential); // We have no direct access, so it is sequential!
+    // NOTE: "sequential" also means that you cannot use size()
+}
+
+KQIODeviceGZip::~KQIODeviceGZip(void)
+{
+    if (m_gzfile)
+        close();
+}
+
+bool KQIODeviceGZip::open(int mode)
+{
+    if (m_gzfile)
+        close(); // One file is already open, so close it first.
+    if (m_filename.isEmpty())
+        return false; // No file name, cannot open!
+
+    if (IO_ReadOnly==mode)
+    {
+        m_gzfile=gzopen(QFile::encodeName(m_filename),"rb");
+    }
+    else if (IO_WriteOnly==mode)
+    {
+        m_gzfile=gzopen(QFile::encodeName(m_filename),"wb9"); // Always set best compression
+    }
+    else
+    {
+        // We only support read only or write only, nothing else!
+        return false;
+    }
+    return (m_gzfile!=0);
+}
+
+void KQIODeviceGZip::close(void)
+{
+    if (m_gzfile)
+    {
+        gzclose(m_gzfile);
+        m_gzfile=0;
+    }
+}
+
+void KQIODeviceGZip::flush(void)
+{
+    // Always try to flush, do not return any error!
+    if (m_gzfile)
+    {
+        gzflush(m_gzfile,Z_SYNC_FLUSH);
+    }
+}
+
+QIODevice::Offset KQIODeviceGZip::size(void) const
+{
+    return 0; // You cannot determine size!
+}
+
+QIODevice::Offset  KQIODeviceGZip::at() const
+{
+    if (!m_gzfile)
+        return 0;
+    return gztell(m_gzfile);
+}
+
+bool KQIODeviceGZip::at(QIODevice::Offset pos)
+{
+    if (!m_gzfile)
+        return false;
+    return (gzseek(m_gzfile,pos,SEEK_SET)>=0);
+}
+
+bool KQIODeviceGZip::atEnd() const
+{
+    if (!m_gzfile)
+        return true;
+    return gzeof(m_gzfile);
+}
+
+bool KQIODeviceGZip::reset(void)
+{
+    if (!m_gzfile)
+        return false; //Say we arew at end of file
+    return (gzrewind(m_gzfile)>=0);
+}
+
+Q_LONG KQIODeviceGZip::readBlock( char *data, Q_ULONG maxlen )
+{
+    Q_LONG result=0;
+    if (m_gzfile)
+    {
+        result=gzread(m_gzfile,data,maxlen);
+        if (result<0) result=0;
+    }
+    return result;
+}
+
+Q_LONG KQIODeviceGZip::writeBlock( const char *data, Q_ULONG len )
+{
+    Q_ULONG result=0;
+    if (m_gzfile)
+    {
+        result=gzwrite(m_gzfile,(char*)data,len);
+    }
+    return result;
+}
+
+int KQIODeviceGZip::getch()
+{
+    if (m_ungetchar>0)
+    {
+        const int ch=m_ungetchar;
+        m_ungetchar=-1;
+        return ch;
+    }
+    if (!m_gzfile)
+        return -1;
+    return gzgetc(m_gzfile);
+}
+
+int KQIODeviceGZip::putch( int ch)
+{
+    if (!m_gzfile)
+        return -1;
+    return gzputc(m_gzfile,ch);
+}
+
+int KQIODeviceGZip::ungetch(int ch)
+{
+    m_ungetchar=ch;
+    return ch;
+}