path: root/src/outputgen.h

/******************************************************************************
 *
 * 
 *
 * Copyright (C) 1997-2001 by Dimitri van Heesch.
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation under the terms of the GNU General Public License is hereby 
 * granted. No representations are made about the suitability of this software 
 * for any purpose. It is provided "as is" without express or implied warranty.
 * See the GNU General Public License for more details.
 *
 * Documents produced by Doxygen are derivative works derived from the
 * input used in their production; they are not affected by this license.
 *
 */

#ifndef OUTPUTGEN_H
#define OUTPUTGEN_H

#include "qtbc.h"
#include <qtextstream.h>
#include <qbuffer.h>
#include <qfile.h>
#include <qstack.h>
#include "index.h"

class ClassDiagram;
class DotClassGraph;
class DotInclDepGraph;
class DotGfxHierarchyTable;

/*! \brief Base Interface used for generating documentation.
 *
 *  This abstract class is used by the documentation block
 *  parser to generate the output for a specific format,
 *  or a list of formats (see OutputList). This interface
 *  contains functions that generate output.
 */
class BaseOutputDocInterface
{
  public:

    /*! Start of a bullet list: e.g. \c <ul> in html. writeListItem() is
     *  Used for the bullet items.
     */
    virtual void startItemList()  = 0;

    /*! Writes a list item for a bullet or enumerated 
     *  list: e.g. \c <li> in html 
     */
    virtual void writeListItem()  = 0;

    /*! Ends a bullet list: e.g. \c </ul> in html */
    virtual void endItemList()    = 0;

    /*! Writes an ASCII string to the output. Converts characters that have
     *  A special meaning, like \c & in html. 
     */
    virtual void docify(const char *s) = 0;

    /*! Writes a single ASCII character to the output. Converts characters
     *  that have a special meaning.
     */
    virtual void writeChar(char c) = 0;

    /*! Writes an ASCII string to the output, \e without converting 
     *  special characters. 
     */
    virtual void writeString(const char *text) = 0;

    /*! Starts a new paragraph */
    virtual void newParagraph()   = 0;

    /*! Starts a enumeration list: e.g. \c <ol> in html. 
     *  writeListItem() is used for the items. 
     */
    virtual void startEnumList()  = 0;

    /*! Ends an enumeration list: e.g. \c </ol> in html. 
     */
    virtual void endEnumList()    = 0;

    /*! Writes a link to an object in the documentation.
     *  \param ref    If this is non-zero, the object is to be found in
     *                an external documentation file.
     *  \param file   The file in which the object is located.
     *  \param anchor The anchor uniquely identifying the object within 
     *                the file. 
     *  \param text   The text to display as a placeholder for the link.
     */
    virtual void writeObjectLink(const char *ref,const char *file,
                                 const char *anchor, const char *text) = 0;

    /*! Writes a link to an object in a code fragment.
     *  \param ref    If this is non-zero, the object is to be found in
     *                an external documentation file.
     *  \param file   The file in which the object is located.
     *  \param anchor The anchor uniquely identifying the object within 
     *                the file. 
     *  \param text   The text to display as a placeholder for the link.
     */
    virtual void writeCodeLink(const char *ref,const char *file,
                               const char *anchor,const char *text) = 0;

    /*! Writes a (link to an) URL found in the documentation.
     *  \param url    To URL to link to.
     *  \param text   The text to display as a placeholder for the link.
     */
    virtual void writeHtmlLink(const char *url,const char *text) = 0;

    /*! Writes a (link to an) email address found in the documentation.
     *  \param url    To email address, this is also used for the link text.
     */
    virtual void writeMailLink(const char *url) = 0;
    
    /*! Changes the text font to bold face. The bold section ends with
     *  endBold()
     */
    virtual void startBold()      = 0;

    /*! End a section of text displayed in bold face. */
    virtual void endBold()        = 0;

    /*! Changes the text font to fixed size. The section ends with
     *  endTypewriter()
     */
    virtual void startTypewriter() = 0;

    /*! End a section of text displayed in typewriter style. */
    virtual void endTypewriter() = 0;

    /*! Changes the text font to italic. The italic section ends with
     *  endEmphasis()
     */
    virtual void startEmphasis() = 0;

    /*! Ends a section of text displayed in italic. */
    virtual void endEmphasis() = 0;

    /*! Starts a source code fragment. The fragment will be
     *  fed to the code parser (see code.h) for syntax highlighting
     *  and cross-referencing. The fragment ends by a call to
     *  endCodeFragment()
     */
    virtual void startCodeFragment() = 0;

    /*! Ends a source code fragment
     */
    virtual void endCodeFragment() = 0;

    /*! Starts a fragment of preformatted text. This means that
     *  spacing, tabs and newlines should be kept in the output
     */

    virtual void startPreFragment() = 0;
    /*! Ens a preformatted text fragment. */

    virtual void endPreFragment() = 0;
    /*! Writes a horizontal ruler to the output */
    virtual void writeRuler() = 0;
    
    /*! Starts a description list: e.g. \c <dl> in HTML 
     *  Items are surrounded by startDescItem() and endDescItem()
     */
    virtual void startDescription() = 0;

    /*! Ends a description list: e.g. \c </dl> in HTML */
    virtual void endDescription() = 0;

    /*! Starts an item of a description list: e.g. \c <dt> in HTML. */
    virtual void startDescItem() = 0;

    /*! Ends an item of a description list and starts the 
     *  description itself: e.g. \c <dd> in HTML. 
     */
    virtual void endDescItem() = 0;
    virtual void startSubsection() = 0;
    virtual void endSubsection() = 0;
    virtual void startSubsubsection() = 0;
    virtual void endSubsubsection() = 0;
    virtual void startCenter() = 0;
    virtual void endCenter() = 0;
    virtual void startSmall() = 0;
    virtual void endSmall() = 0;
    virtual void startSubscript() = 0;
    virtual void endSubscript() = 0;
    virtual void startSuperscript() = 0;
    virtual void endSuperscript() = 0;
    virtual void startTable(int cols) = 0;
    virtual void endTable() = 0;
    virtual void nextTableRow() = 0;
    virtual void endTableRow() = 0;
    virtual void nextTableColumn() = 0;
    virtual void endTableColumn() = 0;
    virtual void writeQuote() = 0;
    virtual void writeCopyright() = 0;
    virtual void writeUmlaut(char) = 0;
    virtual void writeAcute(char) = 0;
    virtual void writeGrave(char) = 0;
    virtual void writeCirc(char) = 0;
    virtual void writeTilde(char) = 0;
    virtual void writeRing(char) = 0;
    virtual void writeSharpS() = 0;
    virtual void startDescList() = 0;
    virtual void endDescList() = 0;
    virtual void endDescTitle() = 0;
    virtual void writeDescItem() = 0;
    virtual void startTitle() = 0;
    virtual void endTitle()   = 0;
    virtual void writeAnchor(const char *fileName,const char *name) = 0;
    virtual void startSection(const char *,const char *,bool) = 0;
    virtual void endSection(const char *,bool) = 0;
    virtual void writeSectionRef(const char *,const char *,
                                 const char *,const char *) = 0;
    virtual void writeSectionRefItem(const char *,const char *,const char *) = 0;
    virtual void lineBreak() = 0;
    virtual void addIndexItem(const char *s1,const char *s2) = 0;
    virtual void writeFormula(const char *,const char *) = 0;
    virtual void writeNonBreakableSpace() = 0;
    virtual void startImage(const char *,const char *,bool) = 0;
    virtual void endImage(bool) = 0;
    virtual void startDescTable() = 0;
    virtual void endDescTable() = 0;
    virtual void startDescTableTitle() = 0;
    virtual void endDescTableTitle() = 0;
    virtual void startDescTableData() = 0;
    virtual void endDescTableData() = 0;
    virtual void startTextLink(const char *file,const char *anchor) = 0;
    virtual void endTextLink() = 0;
    virtual void startPageRef() = 0;
    virtual void endPageRef(const char *,const char *) = 0;


    virtual void startCodeLine() = 0;
    virtual void endCodeLine() = 0;
    virtual void startCodeAnchor(const char *label) = 0;
    virtual void endCodeAnchor() = 0;
    virtual void startFontClass(const char *) = 0;
    virtual void endFontClass() = 0;

    /*! Writes an ASCII string to the output. This function should keep 
     *  spaces visible, should break lines at a newline and should convert 
     *  tabs to the right number of spaces.
     */
    virtual void codify(const char *s) = 0;
    
};

/*! \brief Abstract output generator.
 *
 *  Subclass this class to add support for a new output format
 */
class OutputGenerator : public BaseOutputDocInterface
{
  public:
    enum OutputType { Html, Latex, Man, RTF, XML };

    OutputGenerator();
    virtual ~OutputGenerator();

    ///////////////////////////////////////////////////////////////
    // generic generator methods
    ///////////////////////////////////////////////////////////////
    virtual OutputGenerator *copy() = 0;
    virtual void append(const OutputGenerator *) = 0;
    virtual void enable() = 0;
    virtual void disable() = 0;
    virtual void enableIf(OutputType o) = 0;
    virtual void disableIf(OutputType o) = 0;
    virtual void disableIfNot(OutputType o) = 0;
    virtual bool isEnabled(OutputType o) = 0;
    virtual OutputGenerator *get(OutputType o) = 0;
    void clear() { b.close(); a.resize(0); b.setBuffer(a); 
                   b.open(IO_WriteOnly); t.setDevice(&b); }
    void startPlainFile(const char *name);
    void endPlainFile();
    QCString getContents() const;
    bool isEnabled() const { return active; }
    void pushGeneratorState();
    void popGeneratorState();

    ///////////////////////////////////////////////////////////////
    // structural output interface
    ///////////////////////////////////////////////////////////////
    virtual void startFile(const char *name,const char *title,bool ext) = 0;
    virtual void writeFooter(int,bool) = 0;
    virtual void endFile() = 0;
    virtual void startIndexSection(IndexSections) = 0;
    virtual void endIndexSection(IndexSections) = 0;
    virtual void startProjectNumber() = 0;
    virtual void endProjectNumber() = 0;
    virtual void writeStyleInfo(int part) = 0;
    virtual void startTitleHead(const char *) = 0;
    virtual void endTitleHead(const char *fileName,const char *name) = 0;
    virtual void startIndexList() = 0;
    virtual void endIndexList()   = 0;
    virtual void startAlphabeticalIndexList() = 0;
    virtual void endAlphabeticalIndexList() = 0;
    virtual void writeIndexHeading(const char *s) = 0;
    virtual void writeIndexItem(const char *ref,const char *file,
                                const char *text) = 0;
    virtual void startGroupHeader() = 0;
    virtual void endGroupHeader() = 0;
    virtual void startMemberSections() = 0;
    virtual void endMemberSections() = 0;
    virtual void startMemberHeader() = 0;
    virtual void endMemberHeader() = 0;
    virtual void startMemberSubtitle() = 0;
    virtual void endMemberSubtitle() = 0;
    virtual void startMemberList()  = 0;
    virtual void endMemberList()    = 0;
    virtual void startMemberItem(int) = 0;
    virtual void endMemberItem(bool) = 0;
    virtual void startMemberGroupHeader(bool) = 0;
    virtual void endMemberGroupHeader() = 0;
    virtual void startMemberGroupDocs() = 0;
    virtual void endMemberGroupDocs() = 0;
    virtual void startMemberGroup() = 0;
    virtual void endMemberGroup(bool) = 0;
    virtual void insertMemberAlign() = 0;
    virtual void startMemberDoc(const char *,const char *,
                                const char *,const char *) = 0;
    virtual void endMemberDoc() = 0;
    virtual void startDoxyAnchor(const char *fName,const char *anchor,
                                 const char *name) = 0;
    virtual void endDoxyAnchor(const char *fileName,const char *anchor) = 0;
    virtual void writeLatexSpacing() = 0;
    virtual void writeStartAnnoItem(const char *type,const char *file,
                                    const char *path,const char *name) = 0;
    virtual void writeEndAnnoItem(const char *name) = 0;
    virtual void startMemberDescription() = 0;
    virtual void endMemberDescription() = 0;
    virtual void startIndent() = 0;
    virtual void endIndent() = 0;
    virtual void writeSynopsis() = 0;
    virtual void startClassDiagram() = 0;
    virtual void endClassDiagram(ClassDiagram &,const char *,const char *) = 0;
    virtual void startDotGraph() = 0;
    virtual void endDotGraph(DotClassGraph &g) = 0;
    virtual void startInclDepGraph() = 0;
    virtual void endInclDepGraph(DotInclDepGraph &g) = 0;
    virtual void writeGraphicalHierarchy(DotGfxHierarchyTable &g) = 0;
    virtual void startQuickIndexItem(const char *s,const char *l) = 0;
    virtual void endQuickIndexItem() = 0;
    virtual void startTextBlock(bool) = 0;
    virtual void endTextBlock() = 0;
    virtual void lastIndexPage() = 0;
    virtual void startMemberDocPrefixItem() = 0;
    virtual void endMemberDocPrefixItem() = 0;
    virtual void startMemberDocName() = 0;
    virtual void endMemberDocName() = 0;
    virtual void startParameter(bool) = 0;
    virtual void endParameter(bool) = 0;

  protected:
    QTextStream fs;
    QByteArray a;
    QBuffer b;
    QTextStream t;
    QFile *file;
    QCString dir;
    bool active;

  private:
    OutputGenerator(const OutputGenerator &o);
    OutputGenerator &operator=(const OutputGenerator &o);
    QStack<bool> *genStack;
};

/*! \brief Interface used for generating documentation.
 *
 *  This abstract class is used by the documentation block
 *  parser to generate the output for a specific format. 
 *  This interface contains some state saving and changing
 *  functions for dealing with format specific output.
 */
class OutputDocInterface : public BaseOutputDocInterface
{
  public:
    virtual ~OutputDocInterface() {}

    /*! Create a new output generator. This can later by appended
     *  to the current one using append().
     */
    virtual OutputDocInterface *clone() = 0;

    /*! Disables all output formats except format \a o 
     *  (useful for OutputList only) 
     */
    virtual void disableAllBut(OutputGenerator::OutputType o) = 0;

    /*! Enables all output formats as far as they have been enabled in
     *  the config file. (useful for OutputList only) 
     */
    virtual void enableAll() = 0;

    /*! Disables all output formats (useful for OutputList only) */
    virtual void disableAll()= 0;

    /*! Disables a specific output format (useful for OutputList only) */
    virtual void disable(OutputGenerator::OutputType o) = 0;

    /*! Enables a specific output format (useful for OutputList only) */
    virtual void enable(OutputGenerator::OutputType o) = 0;

    /*! Check whether a specific output format is currenly enabled 
     *  (useful for OutputList only) 
     */
    virtual bool isEnabled(OutputGenerator::OutputType o) = 0;

    /*! Appends the output generated by generator \a g to this
     *  generator.
     */ 
    virtual void append(const OutputDocInterface *g) = 0;

    /*! Pushes the state of the current generator (or list of 
     *  generators) on a stack.
     */
    virtual void pushGeneratorState() = 0;

    /*! Pops the state of the current generator (or list of 
     *  generators) on a stack. Should be preceded by a call
     *  the pushGeneratorState().
     */
    virtual void popGeneratorState() = 0;
};


#endif