sw/source/filter/ww8/rtfstringbuffer.hxx

   1 /*
   2  * This file is part of the LibreOffice project.
   3  *
   4  * This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   7  */
   8
   9 #ifndef INCLUDED_SW_SOURCE_FILTER_WW8_RTFSTRINGBUFFER_HXX
  10 #define INCLUDED_SW_SOURCE_FILTER_WW8_RTFSTRINGBUFFER_HXX
  11
  12 #include <rtl/strbuf.hxx>
  13 #include <vector>
  14
  15 class SwGrfNode;
  16 class SwFlyFrameFormat;
  17 class RtfAttributeOutput;
  18
  19 /// Contains a buffered string or graphic during RTF export.
  20 class RtfStringBufferValue
  21 {
  22 public:
  23     /// Constructor for a string buffering.
  24     RtfStringBufferValue();
  25     /// Constructor for graphic buffering.
  26     RtfStringBufferValue(const SwFlyFrameFormat* pFlyFrameFormat, const SwGrfNode* pGrfNode);
  27     /// This version handles graphics.
  28     void makeStringAndClear(RtfAttributeOutput* pAttributeOutput);
  29     /// This one doesn't.
  30     OString makeStringAndClear();
  31     bool isGraphic() const;
  32     OStringBuffer& getBuffer() { return m_aBuffer; }
  33     const OStringBuffer& getBuffer() const { return m_aBuffer; }
  34
  35 private:
  36     OStringBuffer m_aBuffer;
  37     const SwFlyFrameFormat* m_pFlyFrameFormat = nullptr;
  38     const SwGrfNode* m_pGrfNode = nullptr;
  39 };
  40
  41 /// Wrapper around OStringBuffers, so less hexdump of graphics have to be kept in memory during RTF export.
  42 class RtfStringBuffer
  43 {
  44 public:
  45     RtfStringBuffer();
  46     /// Length of all the contained buffers.
  47     sal_Int32 getLength() const;
  48     /// Writes the contents of the buffer directly to the supplied stream.
  49     void makeStringAndClear(RtfAttributeOutput* pAttributeOutput);
  50     /// Returns the buffered strings as a string (ignores graphic elements!)
  51     OString makeStringAndClear();
  52     /// Access to the last buffer.
  53     OStringBuffer& getLastBuffer();
  54     OStringBuffer* operator->();
  55     /// Similar to ->setLength(0), but for all buffers.
  56     void clear();
  57     /// Same as ->append(), but for graphics and without expanding contents to save memory.
  58     void append(const SwFlyFrameFormat* pFlyFrameFormat, const SwGrfNode* pGrfNode);
  59     /// Append all contained buffers and clear the argument.
  60     void appendAndClear(RtfStringBuffer& rBuf);
  61
  62 private:
  63     using Values_t = std::vector<RtfStringBufferValue>;
  64     Values_t m_aValues;
  65 };
  66
  67 #endif // INCLUDED_SW_SOURCE_FILTER_WW8_RTFSTRINGBUFFER_HXX
  68
  69 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */