1 files changed, 137 insertions, 0 deletions
diff --git a/kfile-plugins/pnm/kfile_pnm.cpp b/kfile-plugins/pnm/kfile_pnm.cpp
new file mode 100644
index 00000000..b0a1dcca
--- /dev/null
+++ b/kfile-plugins/pnm/kfile_pnm.cpp
@@ -0,0 +1,137 @@
+/* This file is part of the KDE project
+ * Copyright (C) 2003 Volker Krause <volker.krause@rwth-aachen.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation version 2.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "kfile_pnm.h"
+
+#include <math.h>
+#include <kgenericfactory.h>
+#include <qfile.h>
+#include <qtextstream.h>
+
+static const char* formats[] = {
+	I18N_NOOP("plain"),
+	I18N_NOOP("raw")
+};
+
+typedef KGenericFactory<KPnmPlugin> PnmFactory;
+
+K_EXPORT_COMPONENT_FACTORY(kfile_pnm, PnmFactory("kfile_pnm"))
+
+KPnmPlugin::KPnmPlugin(QObject *parent, const char *name, const QStringList &args) : KFilePlugin(parent, name, args) 
+{
+	makeMimeTypeInfo( "image/x-portable-bitmap" );
+	makeMimeTypeInfo( "image/x-portable-greymap" );
+	makeMimeTypeInfo( "image/x-portable-pixmap" );
+}
+
+void KPnmPlugin::makeMimeTypeInfo(const QString& mimetype)
+{
+	KFileMimeTypeInfo* info = addMimeTypeInfo( mimetype );
+
+	KFileMimeTypeInfo::GroupInfo* group = 0;
+	KFileMimeTypeInfo::ItemInfo* item = 0;
+
+	group = addGroupInfo(info, "General", i18n("General"));
+
+	addItemInfo(group, "Format", i18n("Format"), QVariant::String);
+
+	item = addItemInfo(group, "Dimensions", i18n("Dimensions"), QVariant::Size);
+	setUnit(item, KFileMimeTypeInfo::Pixels);
+
+	item = addItemInfo(group, "BitDepth", i18n("Bit Depth"), QVariant::Int);
+	setUnit(item, KFileMimeTypeInfo::BitsPerPixel);
+
+	addItemInfo(group, "Comment", i18n("Comment"), QVariant::String);
+}
+
+
+bool KPnmPlugin::readInfo( KFileMetaInfo& info, uint /*what*/)
+{
+	QFile f(info.path());
+	if(!f.open(IO_ReadOnly))
+		return false;
+	if(f.size() <= 2)
+		return false;
+	QTextStream stream(&f);
+
+	char c;
+	stream >> c;
+	if(c != 'P')
+		return false;
+
+	// image format and type
+	int n;
+	stream >> n;
+	int format = (n - 1) / 3;
+	if(format != 0 && format != 1)
+		return false;
+	int type = (n - 1) % 3;
+
+	QString comments, buffer;
+	while(!stream.atEnd()) {
+		stream >> c;
+		// comment
+		if( c == '#') {
+			buffer = stream.readLine();
+			comments += buffer.stripWhiteSpace();
+			comments += '\n';
+		}
+		// image size
+		// unfortunately Qt doesn't have some kind of push-back method for 
+		// QTextStream, so we need to manually decode the first part of the 
+		// image size.
+		if( c >= '0' && c <= '9' ) {
+			buffer = "";
+			QChar tmp(c);
+			while(!stream.atEnd() && tmp.isDigit()) {
+				buffer += tmp;
+				stream >> tmp;
+			}
+			break;
+		}
+	}
+
+	// image size
+	int x, y, max;
+	x = buffer.toInt();
+	stream >> y;
+	stream >> max;
+
+	// bit depth
+	// PNM doesn't provide a conventional bit depth value, only the highest value
+	// per pixel. To have comparable values with other formats, we convert it to
+	// a normal bit depth value.
+	int bpp = 1;
+	if(type != 0) 
+		bpp = (int)ceil(log((double)max) / log(2.0));
+	if(type == 2) 
+		bpp *= 3;
+
+	KFileMetaInfoGroup group = appendGroup(info, "General");
+	appendItem(group, "Format", formats[format]);
+	appendItem(group, "Dimensions", QSize(x, y));
+	if(!comments.isEmpty())
+		appendItem(group, "Comment", comments.stripWhiteSpace());
+	appendItem(group, "BitDepth", bpp);
+
+	f.close();
+	return true;
+}
+
+#include "kfile_pnm.moc"