/******************************************************************************

 *

 * Copyright (C) 1997-2015 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.

 *

 */

/** @file

 *  @brief Example of how to use doxygen as part of another GPL applications

 *

 *  This example shows how to configure and run doxygen programmatically from

 *  within an application without generating the usual output.

 *  The example should work on any Unix like OS (including Linux and Mac OS X).

 *  

 *  This example shows how to use to code parser to get cross-references information

 *  and it also shows how to look up symbols in a program parsed by doxygen and

 *  show some information about them.

 */

#include <stdlib.h>

#include <qfile.h>

#include <qdir.h>

#include "doxygen.h"

#include "outputgen.h"

#include "parserintf.h"

#include "classdef.h"

#include "namespacedef.h"

#include "filedef.h"

#include "util.h"

#include "classlist.h"

#include "config.h"

#include "filename.h"

class XRefDummyCodeGenerator : public CodeOutputInterface

{

  public:

    XRefDummyCodeGenerator(FileDef *fd) : m_fd(fd) {}

   ~XRefDummyCodeGenerator() {}

    // these are just null functions, they can be used to produce a syntax highlighted

    // and cross-linked version of the source code, but who needs that anyway ;-)

    void codify(const char *) {}

    void writeCodeLink(const char *,const char *,const char *,const char *,const char *)  {}

    void writeLineNumber(const char *,const char *,const char *,int) {}

    virtual void writeTooltip(const char *,const DocLinkInfo &,

                              const char *,const char *,const SourceLinkInfo &, 

                              const SourceLinkInfo &) {}

    void startCodeLine(bool) {}

    void endCodeLine() {}

    void startCodeAnchor(const char *) {}

    void endCodeAnchor() {}

    void startFontClass(const char *) {}

    void endFontClass() {}

    void writeCodeAnchor(const char *) {}

    void setCurrentDoc(Definition *,const char *,bool) {}

    void addWord(const char *,bool) {}

    // here we are presented with the symbols found by the code parser

    void linkableSymbol(int l, const char *sym,Definition *symDef,Definition *context) 

    {

      QCString ctx;

      if (context) // the context of the symbol is known

      {

        if (context->definitionType()==Definition::TypeMember) // it is inside a member

        {

          Definition *parentContext = context->getOuterScope();

          if (parentContext && parentContext->definitionType()==Definition::TypeClass)

             // it is inside a member of a class

          {

            ctx.sprintf("inside %s %s of %s %s",

              ((MemberDef *)context)->memberTypeName().data(),

              context->name().data(),

              ((ClassDef*)parentContext)->compoundTypeString().data(),

              parentContext->name().data());

          }

          else if (parentContext==Doxygen::globalScope) // it is inside a global member

          {

            ctx.sprintf("inside %s %s",

              ((MemberDef *)context)->memberTypeName().data(),

              context->name().data());

          }

        }

        if (ctx.isEmpty()) // it is something else (class, or namespace member, ...)

        {

          ctx.sprintf("in %s",context->name().data());

        }

      }

      printf("Found symbol %s at line %d of %s %s\n",

          sym,l,m_fd->getDefFileName().data(),ctx.data());

      if (symDef && context) // in this case the definition of the symbol is

        // known to doxygen.

      {

        printf("-> defined at line %d of %s\n",

            symDef->getDefLine(),symDef->getDefFileName().data());

      }

    }

  private:

    FileDef *m_fd;

};

static void findXRefSymbols(FileDef *fd)

{

  // get the interface to a parser that matches the file extension

  ParserInterface *pIntf=Doxygen::parserManager->getParser(fd->getDefFileExtension());

  // get the programming language from the file name

  SrcLangExt lang = getLanguageFromFileName(fd->name());

  // reset the parsers state

  pIntf->resetCodeParserState();

  // create a new backend object 

  XRefDummyCodeGenerator *xrefGen = new XRefDummyCodeGenerator(fd);

  // parse the source code

  pIntf->parseCode(*xrefGen,

                0,

                fileToString(fd->absFilePath()),

                lang,

                FALSE,

                0,

                fd);

  // dismiss the object.

  delete xrefGen;

}

static void listSymbol(Definition *d)

{

  if (d!=Doxygen::globalScope && // skip the global namespace symbol

      d->name().at(0)!='@'       // skip anonymous stuff

     )      

  {

    printf("%s\n",

        d->name().data());

  }

}

static void listSymbols()

{

  QDictIterator<DefinitionIntf> sli(*Doxygen::symbolMap);

  DefinitionIntf *di;

  for (sli.toFirst();(di=sli.current());++sli)

  {

    if (di->definitionType()==DefinitionIntf::TypeSymbolList) // list of symbols

      // with same name

    {

      DefinitionListIterator dli(*(DefinitionList*)di);

      Definition *d;

      // for each symbol

      for (dli.toFirst();(d=dli.current());++dli)

      {

        listSymbol(d);

      }

    }

    else // single symbol

    {

      listSymbol((Definition*)di);

    }

  }

}

static void lookupSymbol(Definition *d)

{

  if (d!=Doxygen::globalScope && // skip the global namespace symbol

      d->name().at(0)!='@'       // skip anonymous stuff

     )      

  {

    printf("Symbol info\n");

    printf("-----------\n");

    printf("Name: %s\n",d->name().data());

    printf("File: %s\n",d->getDefFileName().data());

    printf("Line: %d\n",d->getDefLine());

    // depending on the definition type we can case to the appropriate

    // derived to get additional information

    switch (d->definitionType())

    {

      case Definition::TypeClass:

        {

          ClassDef *cd = (ClassDef *)d;

          printf("Kind: %s\n",cd->compoundTypeString().data());

        }

        break;

      case Definition::TypeFile:

        {

          FileDef *fd = (FileDef *)d;

          printf("Kind: File: #includes %d other files\n",

              fd->includeFileList() ? fd->includeFileList()->count() : 0);

        }

        break;

      case Definition::TypeNamespace:

        {

          NamespaceDef *nd = (NamespaceDef *)d;

          printf("Kind: Namespace: contains %d classes and %d namespaces\n",

              nd->getClassSDict() ? nd->getClassSDict()->count() : 0,

              nd->getNamespaceSDict() ? nd->getNamespaceSDict()->count() : 0);

        }

        break;

      case Definition::TypeMember:

        {

          MemberDef *md = (MemberDef *)d;

          printf("Kind: %s\n",md->memberTypeName().data());

        }

        break;

      default:

        // ignore groups/pages/packages/dirs for now

        break;

    }

  }

}

static void lookupSymbols(const QCString &sym)

{

  if (!sym.isEmpty())

  {

    DefinitionIntf *di = Doxygen::symbolMap->find(sym);

    if (di)

    {

      if (di->definitionType()==DefinitionIntf::TypeSymbolList)

      {

        DefinitionListIterator dli(*(DefinitionList*)di);

        Definition *d;

        // for each symbol with the given name

        for (dli.toFirst();(d=dli.current());++dli)

        {

          lookupSymbol(d);

        }

      }

      else

      {

        lookupSymbol((Definition*)di);

      }

    }

    else

    {

      printf("Unknown symbol\n");

    }

  }

}

int main(int argc,char **argv)

{

  char cmd[256];

  if (argc<2)

  {

    printf("Usage: %s [source_file | source_dir]\n",argv[0]);

    exit(1);

  }

  // initialize data structures 

  initDoxygen();

  // setup the non-default configuration options

  // we need a place to put intermediate files

  Config_getString(OUTPUT_DIRECTORY)="/tmp/doxygen"; 

  // disable html output

  Config_getBool(GENERATE_HTML)=FALSE;

  // disable latex output

  Config_getBool(GENERATE_LATEX)=FALSE;

  // be quiet

  Config_getBool(QUIET)=TRUE;

  // turn off warnings

  Config_getBool(WARNINGS)=FALSE;

  Config_getBool(WARN_IF_UNDOCUMENTED)=FALSE;

  Config_getBool(WARN_IF_DOC_ERROR)=FALSE;

  // Extract as much as possible

  Config_getBool(EXTRACT_ALL)=TRUE;

  Config_getBool(EXTRACT_STATIC)=TRUE;

  Config_getBool(EXTRACT_PRIVATE)=TRUE;

  Config_getBool(EXTRACT_LOCAL_METHODS)=TRUE;

  // Extract source browse information, needed 

  // to make doxygen gather the cross reference info

  Config_getBool(SOURCE_BROWSER)=TRUE;

  // set the input

  Config_getList(INPUT).append(argv[1]);

  // check and finialize the configuration

  checkConfiguration();

  adjustConfiguration();

  // parse the files

  parseInput();

  // iterate over the input files

  FileNameListIterator fnli(*Doxygen::inputNameList); 

  FileName *fn;

  // foreach file with a certain name

  for (fnli.toFirst();(fn=fnli.current());++fnli)

  {

    FileNameIterator fni(*fn);

    FileDef *fd;

    // for each file definition

    for (;(fd=fni.current());++fni)

    {

      // get the references (linked and unlinked) found in this file

      findXRefSymbols(fd);

    }

  }

  // remove temporary files

  if (!Doxygen::objDBFileName.isEmpty()) QFile::remove(Doxygen::objDBFileName);

  if (!Doxygen::entryDBFileName.isEmpty()) QFile::remove(Doxygen::entryDBFileName);

  // clean up after us

  QDir().rmdir("/tmp/doxygen");

  while (1)

  {

    printf("> Type a symbol name or\n> .list for a list of symbols or\n> .quit to exit\n> ");

    fgets(cmd,256,stdin);

    QCString s(cmd);

    if (s.at(s.length()-1)=='\n') s=s.left(s.length()-1); // strip trailing \n

    if (s==".list") 

      listSymbols();

    else if (s==".quit") 

      exit(0);

    else 

      lookupSymbols(s);

  }

}