kiten/kloader.cpp

   1 // ksaver.cpp
   2 //
   3 // Copyright (C) 2001 Neil Stevens <multivac@fcmail.com>
   4 //
   5 // Permission is hereby granted, free of charge, to any person obtaining a copy
   6 // of this software and associated documentation files (the "Software"), to deal
   7 // in the Software without restriction, including without limitation the rights
   8 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9 // copies of the Software, and to permit persons to whom the Software is
  10 // furnished to do so, subject to the following conditions:
  11 //
  12 // The above copyright notice and this permission notice shall be included in
  13 // all copies or substantial portions of the Software.
  14 //
  15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  18 // THE AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  19 // AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  20 // CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21 //
  22 // Except as contained in this notice, the name(s) of the author(s) shall not be
  23 // used in advertising or otherwise to promote the sale, use or other dealings
  24 // in this Software without prior written authorization from the author(s).
  25
  26 #ifdef HAVE_CONFIG_H
  27 #include "config.h"
  28 #endif
  29
  30 #include <klocale.h>
  31 #include <kio/netaccess.h>
  32
  33 #include "kloader.h"
  34
  35 class KLoader::KLoaderPrivate
  36 {
  37 public:
  38         KLoaderPrivate() : isLocal(true), file(0), textStream(0), dataStream(0) {};
  39     ~KLoaderPrivate()
  40         {
  41             delete file;
  42             delete textStream;
  43             delete dataStream;
  44         };
  45         bool isLocal;
  46         QString tempFile;
  47         QFile *file;
  48         KURL url;
  49         QString error;
  50         QTextStream *textStream;
  51         QDataStream *dataStream;
  52 };
  53
  54 KLoader::KLoader(const KURL &target)
  55 {
  56         d = new KLoaderPrivate;
  57         d->url = target;
  58
  59         if(d->url.protocol() == "file")
  60         {
  61                 d->isLocal = true;
  62                 d->file = new QFile(d->url.path());
  63         }
  64         else
  65         {
  66                 d->isLocal = false;
  67         }
  68 }
  69
  70 KLoader::~KLoader()
  71 {
  72         close();
  73         delete d;
  74 }
  75
  76 bool KLoader::open(void)
  77 {
  78         if(d->isLocal)
  79         {
  80                 if(!d->file->open(IO_ReadOnly))
  81                 {
  82                         d->error = i18n("Could not read from %1.").arg(d->url.prettyURL());
  83                         return false;
  84                 }
  85         }
  86         else
  87         {
  88                 if(!KIO::NetAccess::download(d->url, d->tempFile))
  89                 {
  90                         d->error = i18n("Could not read from %1.").arg(d->url.prettyURL());
  91                         return false;
  92                 }
  93
  94                 d->file = new QFile(d->tempFile);
  95                 if(!d->file->open(IO_ReadOnly))
  96                 {
  97                         d->error = i18n("Could not read from %1.").arg(d->tempFile);
  98                         return false;
  99                 }
 100         }
 101         return true;
 102 }
 103
 104 void KLoader::close(void)
 105 {
 106         d->textStream = 0;
 107         d->dataStream = 0;
 108
 109         delete d->file;
 110         d->file = 0;
 111
 112         if(!d->isLocal)
 113                 KIO::NetAccess::removeTempFile(d->tempFile);
 114 }
 115
 116 QString KLoader::error(void)
 117 {
 118         return d->error;
 119 }
 120
 121 QFile &KLoader::file(void)
 122 {
 123         if(d->file)
 124                 return *d->file;
 125         else
 126                 return *static_cast<QFile *>(0);
 127 }
 128
 129 QTextStream &KLoader::textStream()
 130 {
 131         if(d->textStream)
 132         {
 133                 return *d->textStream;
 134         }
 135         else if(d->file)
 136         {
 137                 d->textStream = new QTextStream(d->file);
 138                 return *d->textStream;
 139         }
 140         else
 141         {
 142                 return *static_cast<QTextStream *>(0);
 143         }
 144 }
 145
 146 QDataStream &KLoader::dataStream()
 147 {
 148         if(d->dataStream)
 149         {
 150                 return *d->dataStream;
 151         }
 152         else if(d->file)
 153         {
 154                 d->dataStream = new QDataStream(d->file);
 155                 return *d->dataStream;
 156         }
 157         else
 158         {
 159                 return *static_cast<QDataStream *>(0);
 160         }
 161 }