fbreader/src/formats/rtf/RtfReader.h

   1 /*
   2  * Copyright (C) 2004-2008 Geometer Plus <contact@geometerplus.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17  * 02110-1301, USA.
  18  */
  19
  20 #ifndef __RTFREADER_H__
  21 #define __RTFREADER_H__
  22
  23 #include <string>
  24 #include <map>
  25 #include <stack>
  26
  27 #include <ZLEncodingConverter.h>
  28
  29 #include <ZLTextAlignmentType.h>
  30
  31 #include "../EncodedTextReader.h"
  32
  33 class ZLInputStream;
  34 class RtfCommand;
  35
  36 class RtfReader : public EncodedTextReader {
  37
  38 private:
  39         static void fillKeywordMap();
  40         static void addAction(const std::string &tag, RtfCommand *command);
  41
  42 private:
  43         static std::map<std::string, RtfCommand*> ourKeywordMap;
  44
  45 protected:
  46         RtfReader(const std::string &encoding);
  47         virtual ~RtfReader();
  48
  49 public:
  50         virtual bool readDocument(const std::string &fileName);
  51
  52 protected:
  53         enum DestinationType {
  54                 DESTINATION_NONE,
  55                 DESTINATION_SKIP,
  56                 DESTINATION_INFO,
  57                 DESTINATION_TITLE,
  58                 DESTINATION_AUTHOR,
  59                 DESTINATION_PICTURE,
  60                 DESTINATION_STYLESHEET,
  61                 DESTINATION_FOOTNOTE,
  62         };
  63
  64         enum FontProperty {
  65                 FONT_BOLD,
  66                 FONT_ITALIC,
  67                 FONT_UNDERLINED
  68         };
  69
  70         virtual void addCharData(const char *data, size_t len, bool convert) = 0;
  71         virtual void insertImage(const std::string &mimeType, const std::string &fileName, size_t startOffset, size_t size) = 0;
  72         virtual void setEncoding(int code) = 0;
  73         virtual void switchDestination(DestinationType destination, bool on) = 0;
  74         virtual void setAlignment() = 0;
  75         virtual void setFontProperty(FontProperty property) = 0;
  76         virtual void newParagraph() = 0;
  77
  78         void interrupt();
  79
  80 private:
  81         bool parseDocument();
  82         void processKeyword(const std::string &keyword, int *parameter = 0);
  83         void processCharData(const char *data, size_t len, bool convert = true);
  84
  85 protected:
  86         struct RtfReaderState {
  87                 bool Bold;
  88                 bool Italic;
  89                 bool Underlined;
  90                 ZLTextAlignmentType Alignment;
  91                 DestinationType Destination;
  92
  93                 bool ReadDataAsHex;
  94         };
  95
  96         RtfReaderState myState;
  97
  98 private:
  99         bool mySpecialMode;
 100
 101         std::string myFileName;
 102         shared_ptr<ZLInputStream> myStream;
 103         char *myStreamBuffer;
 104
 105         std::stack<RtfReaderState> myStateStack;
 106
 107         int myBinaryDataSize;
 108         std::string myNextImageMimeType;
 109
 110         int myIsInterrupted;
 111
 112 friend class RtfNewParagraphCommand;
 113 friend class RtfFontPropertyCommand;
 114 friend class RtfAlignmentCommand;
 115 friend class RtfCharCommand;
 116 friend class RtfDestinationCommand;
 117 friend class RtfStyleCommand;
 118 friend class RtfSpecialCommand;
 119 friend class RtfPictureCommand;
 120 friend class RtfFontResetCommand;
 121 friend class RtfCodepageCommand;
 122 };
 123
 124 class RtfCommand {
 125 protected:
 126         virtual ~RtfCommand();
 127
 128 public:
 129         virtual void run(RtfReader &reader, int *parameter) const = 0;
 130 };
 131
 132 class RtfNewParagraphCommand : public RtfCommand {
 133 public:
 134         void run(RtfReader &reader, int *parameter) const;
 135 };
 136
 137 class RtfFontPropertyCommand : public RtfCommand {
 138
 139 public:
 140         RtfFontPropertyCommand(RtfReader::FontProperty property);
 141         void run(RtfReader &reader, int *parameter) const;
 142
 143 private:
 144         RtfReader::FontProperty myProperty;
 145 };
 146
 147 class RtfAlignmentCommand : public RtfCommand {
 148 public:
 149         RtfAlignmentCommand(ZLTextAlignmentType alignment);
 150         void run(RtfReader &reader, int *parameter) const;
 151
 152 private:
 153         ZLTextAlignmentType myAlignment;
 154 };
 155
 156 class RtfCharCommand : public RtfCommand {
 157 public:
 158         RtfCharCommand(const std::string &chr);
 159         void run(RtfReader &reader, int *parameter) const;
 160
 161 private:
 162         std::string myChar;
 163 };
 164
 165 class RtfDestinationCommand : public RtfCommand {
 166 public:
 167         RtfDestinationCommand(RtfReader::DestinationType dest);
 168         void run(RtfReader &reader, int *parameter) const;
 169
 170 private:
 171         RtfReader::DestinationType myDestination;
 172 };
 173
 174 class RtfStyleCommand : public RtfCommand {
 175 public:
 176         void run(RtfReader &reader, int *parameter) const;
 177 };
 178
 179 class RtfSpecialCommand : public RtfCommand {
 180         void run(RtfReader &reader, int *parameter) const;
 181 };
 182
 183 class RtfPictureCommand : public RtfCommand {
 184 public:
 185         RtfPictureCommand(const std::string &mimeType);
 186         void run(RtfReader &reader, int *parameter) const;
 187
 188 private:
 189         const std::string myMimeType;
 190 };
 191
 192 class RtfFontResetCommand : public RtfCommand {
 193 public:
 194         void run(RtfReader &reader, int *parameter) const;
 195 };
 196
 197 class RtfCodepageCommand : public RtfCommand {
 198 public:
 199         void run(RtfReader &reader, int *parameter) const;
 200 };
 201
 202 #endif /* __RTFREADER_H__ */