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path: root/src/util.cpp
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/******************************************************************************
 *
 * $Id$
 *
 * Copyright (C) 1997-2000 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.
 *
 * All output generated with Doxygen is not covered by this license.
 *
 */

#include <stdlib.h>
#include <ctype.h>

#include "qtbc.h"
#include <qregexp.h>
#include <qfileinfo.h>

#include "util.h"
#include "message.h"
#include "classdef.h"
#include "filedef.h"
#include "doxygen.h"
#include "scanner.h"
#include "outputlist.h"
#include "defargs.h"
#include "language.h"
#include "config.h"
#include "htmlhelp.h"
#include "example.h"
#include "version.h"
#include "groupdef.h"

// an inheritance tree of depth of 100000 should be enough for everyone :-)
const int maxInheritanceDepth = 100000; 

bool isId(char c)
{
  return c=='_' || isalnum(c);
}

// strip annonymous left hand side part of the scope
//QCString stripAnnonymousScope(const QCString &s)
//{
//  QCString result=s;
//  int i=0;
//  while (!result.isEmpty() && result.at(0)=='@' && (i=result.find("::"))!=-1)
//  { 
//    result=result.right(result.length()-i-2);
//  }
//  //if (result.at(0)=='@')
//  //{
//  //  result.resize(0);
//  //}
//  return result;
//}

// remove all annoymous scopes from string s
QCString removeAnnonymousScopes(const QCString &s)
{
  QCString result;
  int i,ni,l=s.length();
  int p=0;
  while ((i=s.find('@',p))!=-1)
  {
    if (i>p+2) result+=s.mid(p,i-p-2);
    if ((ni=s.find("::",i+1))!=-1)
    {
      p=ni+2;
    }
    else
    {
      p=l;
    }
  }
  if (p!=l) result+=s.mid(p,l-p);
  //printf("removeAnnonymousScopes(`%s')=`%s'\n",s.data(),result.data());
  return result;
}

// strip annonymous left hand side part of the scope
QCString stripAnnonymousNamespaceScope(const QCString &s)
{
  int oi=0,i=0,p=0;
  if (s.isEmpty()) return s;
  while (s.at(p)=='@' && (i=s.find("::",p))!=-1 && 
         namespaceDict[s.left(i)]!=0) { oi=i; p=i+2; }
  if (oi==0) 
  {
    //printf("stripAnnonymousNamespaceScope(`%s')=`%s'\n",s.data(),s.data());
    return s;
  }
  else 
  {
    //printf("stripAnnonymousNamespaceScope(`%s')=`%s'\n",s.data(),s.right(s.length()-oi-2).data());
    return s.right(s.length()-oi-2);
  }
}

void writePageRef(OutputList &ol,const char *cn,const char *mn)
{
  //bool htmlOn = ol.isEnabled(OutputGenerator::Html);
  //bool manOn  = ol.isEnabled(OutputGenerator::Man);

  ol.pushGeneratorState();
  
  //ol.enableAll();
  ol.disable(OutputGenerator::Html);
  ol.disable(OutputGenerator::Man);
  if (Config::pdfHyperFlag) ol.disable(OutputGenerator::Latex);
  if (Config::rtfHyperFlag) ol.disable(OutputGenerator::RTF);
  ol.startPageRef();
  ol.docify(theTranslator->trPageAbbreviation());
  ol.endPageRef(cn,mn);

  //if (htmlOn) ol.enable(OutputGenerator::Html);
  //if (manOn)  ol.enable(OutputGenerator::Man);

  ol.popGeneratorState();
}

QCString generateMarker(int id)
{
  QCString result;
  result.sprintf("@%d\n",id);
  return result;
}

// strip part of the path if it matches
// one of the paths in the stripFromPath list
QCString stripFromPath(const QCString &path)
{
  const char *s=Config::stripFromPath.first();
  while (s)
  {
    QCString prefix = s;
    if (path.left(prefix.length())==prefix)
    {
      return path.right(path.length()-prefix.length());
    }
    s = Config::stripFromPath.next();
  }
  return path;
}

// try to determine if this files is a source or a header file by looking
// at the extension (5 variations are allowed in both upper and lower case)
// If anyone knows or uses another extension please let me know :-)
int guessSection(const char *name)
{
  QCString n=((QCString)name).lower();
  if (n.right(2)==".c"   ||
      n.right(3)==".cc"  ||
      n.right(4)==".cxx" ||
      n.right(4)==".cpp" ||
      n.right(4)==".c++"
     ) return Entry::SOURCE_SEC;
  if (n.right(2)==".h"   ||
      n.right(3)==".hh"  ||
      n.right(4)==".hxx" ||
      n.right(4)==".hpp" ||
      n.right(4)==".h++" ||
      n.right(4)==".idl"
     ) return Entry::HEADER_SEC;
  return 0;
}


//QCString resolveDefines(const char *n)
//{
//  return n;
//  if (n)
//  {
//    Define *def=defineDict[n]; 
//    if (def && def->nargs==0 && !def->definition.isEmpty())
//    {
//      return def->definition;
//    }
//    return n;
//  }
//  return 0;
//}

//QCString resolveTypedefs(const QCString &n)
//{
// QCString *subst=typedefDict[n];
//  if (subst && !subst->isEmpty())
//  {
//    return *subst;
//  }
//  else
//  {
//    return n;
//  }
//}

ClassDef *getClass(const char *name)
{
  if (name==0 || name[0]=='\0') return 0;
//  QCString *subst = typedefDict[name];
//  if (subst)
//    return classDict[subst->data()];
//  else
  return classDict[name];
}

QCString removeRedundantWhiteSpace(const QCString &s)
{
  if (s.isEmpty()) return s;
  QCString result;
  uint i;
  for (i=0;i<s.length();i++)
  {
    char c=s.at(i);
    if (c!=' ' ||
	(i!=0 && i!=s.length()-1 && isId(s.at(i-1)) && isId(s.at(i+1)))
       )
    {
      if ((c=='*' || c=='&') && 
	  !result.isEmpty() && isId(result.at(result.length()-1))
	 ) result+=' ';
      result+=c;
    }
  }
  return result;
}  

bool rightScopeMatch(const QCString &scope, const QCString &name)
{
  return (name==scope || // equal 
           (scope.right(name.length())==name && // substring 
           scope.at(scope.length()-name.length()-1)==':' // scope
           ) 
     );
}

bool leftScopeMatch(const QCString &scope, const QCString &name)
{
  return (name==scope || // equal 
           (scope.left(name.length())==name && // substring 
           scope.at(name.length())==':' // scope
           ) 
     );
}

void linkifyText(OutputList &ol,const char *scName,const char *name,const char *text)
{
  //printf("scope=`%s' name=`%s' Text: `%s'\n",scName,name,text);
  static QRegExp regExp("[a-z_A-Z0-9:]+");
  QCString txtStr=text;
  OutputList result(&ol);
  int matchLen;
  int index=0;
  int newIndex;
  int skipIndex=0;
  // read a word from the text string
  while ((newIndex=regExp.match(txtStr,index,&matchLen))!=-1)
  {
    // add non-word part to the result
    result.docify(txtStr.mid(skipIndex,newIndex-skipIndex)); 
    // get word from string
    QCString word=txtStr.mid(newIndex,matchLen);
    ClassDef     *cd=0;
    FileDef      *fd=0;
    MemberDef    *md=0;
    NamespaceDef *nd=0;
    GroupDef     *gd=0;

    QCString scopeName=scName;
    QCString searchName=name;
    //printf("word=`%s' scopeName=`%s' searchName=`%s'\n",
    //        word.data(),scopeName.data(),searchName.data()
    //      );
    // check if `word' is a documented class name
    if (!word.isEmpty() && 
        !rightScopeMatch(word,searchName) && 
        !rightScopeMatch(scopeName,word)
       )
    {
      //printf("Searching...\n");
      int scopeOffset=scopeName.length();
      bool found=FALSE;
      do // for each scope (starting with full scope and going to empty scope)
      {
        QCString fullName = word.copy();
        if (scopeOffset>0)
        {
          fullName.prepend(scopeName.left(scopeOffset)+"::");
        }
        //printf("Trying class %s\n",fullName.data());

        if ((cd=getClass(fullName)))
        {
          // add link to the result
          if (cd->isLinkable())
          {
            result.writeObjectLink(cd->getReference(),cd->getOutputFileBase(),0,word);
            found=TRUE;
          }
        }
        
        if (scopeOffset==0)
        {
          scopeOffset=-1;
        }
        else if ((scopeOffset=scopeName.findRev("::",scopeOffset-1))==-1)
        {
          scopeOffset=0;
        }
      } while (!found && scopeOffset>=0);

      //if (!found) printf("Trying to link %s in %s\n",word.data(),scName);
      if (!found && 
          getDefs(scName,word,0,md,cd,fd,nd,gd) && 
          (md->isTypedef() || md->isEnumerate() || md->isReference()) && 
          md->isLinkable() 
         )
      {
        //printf("Found ref\n");
        Definition *d=0;
        if (cd) d=cd; else if (nd) d=nd; else if (fd) d=fd; else d=gd;
        if (d && d->isLinkable())
        {
          result.writeObjectLink(d->getReference(),d->getOutputFileBase(),
                                 md->anchor(),word);
          found=TRUE;
        }
      }

      if (!found) // add word to the result
      {
        result.docify(word);
      }
    }
    else
    {
      result.docify(word);
    }
    // set next start point in the string
    skipIndex=index=newIndex+matchLen;
  }
  // add last part of the string to the result.
  result.docify(txtStr.right(txtStr.length()-skipIndex));
  //printf("linkify: %s\n",result.data());
  ol+=result; 
}


void writeExample(OutputList &ol,ExampleList *el)
{
  QCString exampleLine=theTranslator->trWriteList(el->count());
 
  //bool latexEnabled = ol.isEnabled(OutputGenerator::Latex);
  //bool manEnabled   = ol.isEnabled(OutputGenerator::Man);
  //bool htmlEnabled  = ol.isEnabled(OutputGenerator::Html);
  QRegExp marker("@[0-9]+");
  int index=0,newIndex,matchLen;
  // now replace all markers in inheritLine with links to the classes
  while ((newIndex=marker.match(exampleLine,index,&matchLen))!=-1)
  {
    bool ok;
    parseText(ol,exampleLine.mid(index,newIndex-index));
    uint entryIndex = exampleLine.mid(newIndex+1,matchLen-1).toUInt(&ok);
    Example *e=el->at(entryIndex);
    if (ok && e) 
    {
      ol.pushGeneratorState();
      //if (latexEnabled) ol.disable(OutputGenerator::Latex);
      ol.disable(OutputGenerator::Latex);
      ol.disable(OutputGenerator::RTF);
      // link for Html / man
      ol.writeObjectLink(0,e->file,e->anchor,e->name);
      ol.popGeneratorState();
      
      ol.pushGeneratorState();
      //if (latexEnabled) ol.enable(OutputGenerator::Latex);
      ol.disable(OutputGenerator::Man);
      ol.disable(OutputGenerator::Html);
      // link for Latex / pdf with anchor because the sources
      // are not hyperlinked (not possible with a verbatim environment).
      ol.writeObjectLink(0,e->file,0,e->name);
      //if (manEnabled) ol.enable(OutputGenerator::Man);
      //if (htmlEnabled) ol.enable(OutputGenerator::Html);
      ol.popGeneratorState();
    }
    index=newIndex+matchLen;
  } 
  parseText(ol,exampleLine.right(exampleLine.length()-index));
  ol.writeString(".");
}



QCString argListToString(ArgumentList *al)
{
  QCString result;
  if (al==0) return result;
  Argument *a=al->first();
  result+="(";
  while (a)
  {
    result+= a->type+" "+a->name+a->array;
    a = al->next();
    if (a) result+=","; 
  }
  result+=")";
  if (al->constSpecifier) result+=" const";
  if (al->volatileSpecifier) result+=" volatile";
  return result;
}

//QCString tempArgListToString(ArgumentList *al)
//{
//  QCString result;
//  if (al==0) return result;
//  Argument *a=al->first();
//  result+="<";
//  while (a)
//  {
//    int ni=a->type.findRev(' ');
//    if (ni!=-1) 
//      result+=a->type.right(a->type.length()-ni-1);
//    else
//      result+=a->type;
//    a = al->next();
//    if (a) result+=",";
//  }
//  result+=">";
//  return result;
//}

QCString tempArgListToString(ArgumentList *al)
{
  QCString result;
  if (!al || al->count()==0) return result;
  result="<";
  Argument *a=al->first();
  while (a)
  {
    if (!a->name.isEmpty()) // add template argument name
    {
      result+=a->name;
    }
    else // extract name from type
    {
      int i=a->type.length()-1;
      while (i>=0 && isId(a->type.at(i))) i--;
      if (i>0)
      {
        result+=a->type.right(a->type.length()-i-1);
      }
    }
    a=al->next();
    if (a) result+=", ";
  }
  result+=">";
  return result;
}

static bool manIsEnabled;

void startTitle(OutputList &ol,const char *fileName)
{
  ol.startTitleHead(fileName);
  manIsEnabled=ol.isEnabled(OutputGenerator::Man);
  if (manIsEnabled) ol.disable(OutputGenerator::Man);
}

void endTitle(OutputList &ol,const char *fileName,const char *name)
{
  if (manIsEnabled) ol.enable(OutputGenerator::Man); 
  ol.endTitleHead(fileName,name);
}

void writeQuickLinks(OutputList &ol,bool compact,bool ext)
{
  ol.pushGeneratorState();
  //bool manEnabled = ol.isEnabled(OutputGenerator::Man);
  //bool texEnabled = ol.isEnabled(OutputGenerator::Latex);
  ol.disableAllBut(OutputGenerator::Html);
  QCString extLink,absPath;
  if (ext) { extLink="_doc:"; absPath="/"; }
  //if (manEnabled) ol.disable(OutputGenerator::Man);
  //if (texEnabled) ol.disable(OutputGenerator::Latex);
  if (compact) ol.startCenter(); else ol.startItemList();

  if (!compact) ol.writeListItem();
  ol.startQuickIndexItem(extLink,absPath+"index.html");
  parseText(ol,theTranslator->trMainPage());
  ol.endQuickIndexItem();

  if (documentedGroups>0)
  {
    if (!compact) ol.writeListItem();
    ol.startQuickIndexItem(extLink,absPath+"modules.html");
    parseText(ol,theTranslator->trModules());
    ol.endQuickIndexItem();
  } 
  if (documentedNamespaces>0)
  {
    if (!compact) ol.writeListItem();
    ol.startQuickIndexItem(extLink,absPath+"namespaces.html");
    parseText(ol,theTranslator->trNamespaceList());
    ol.endQuickIndexItem();
  }
  if (hierarchyClasses>0)
  {
    if (!compact) ol.writeListItem();
    ol.startQuickIndexItem(extLink,absPath+"hierarchy.html");
    parseText(ol,theTranslator->trClassHierarchy());
    ol.endQuickIndexItem();
  } 
  if (annotatedClasses>0)
  {
    if (Config::alphaIndexFlag)
    {
      if (!compact) ol.writeListItem();
      ol.startQuickIndexItem(extLink,absPath+"classes.html");
      parseText(ol,theTranslator->trAlphabeticalList());
      ol.endQuickIndexItem();
    }
    if (!compact) ol.writeListItem();
    ol.startQuickIndexItem(extLink,absPath+"annotated.html");
    parseText(ol,theTranslator->trCompoundList());
    ol.endQuickIndexItem();
  } 
  if (documentedHtmlFiles>0)
  {
    if (!compact) ol.writeListItem();
    ol.startQuickIndexItem(extLink,absPath+"files.html");
    parseText(ol,theTranslator->trFileList());
    ol.endQuickIndexItem();
  } 
  //if (documentedIncludeFiles>0 && Config::verbatimHeaderFlag)
  //{
  //  if (!compact) ol.writeListItem();
  //  ol.startQuickIndexItem(extLink,absPath+"headers.html");
  //  parseText(ol,theTranslator->trHeaderFiles());
  //  ol.endQuickIndexItem();
  //}
  //if (Config::sourceBrowseFlag) 
  //{
  //  if (!compact) ol.writeListItem();
  //  ol.startQuickIndexItem(extLink,absPath+"sources.html");
  //  parseText(ol,theTranslator->trSources());
  //  ol.endQuickIndexItem();
  //}
  if (documentedNamespaceMembers>0)
  {
    if (!compact) ol.writeListItem();
    ol.startQuickIndexItem(extLink,absPath+"namespacemembers.html");
    parseText(ol,theTranslator->trNamespaceMembers());
    ol.endQuickIndexItem();
  }
  if (documentedMembers>0)
  {
    if (!compact) ol.writeListItem();
    ol.startQuickIndexItem(extLink,absPath+"functions.html");
    parseText(ol,theTranslator->trCompoundMembers());
    ol.endQuickIndexItem();
  } 
  if (documentedFunctions>0)
  {
    if (!compact) ol.writeListItem();
    ol.startQuickIndexItem(extLink,absPath+"globals.html");
    parseText(ol,theTranslator->trFileMembers());
    ol.endQuickIndexItem();
  } 
  if (pageList.count()>0)
  {
    if (!compact) ol.writeListItem();
    ol.startQuickIndexItem(extLink,absPath+"pages.html");
    parseText(ol,theTranslator->trRelatedPages());
    ol.endQuickIndexItem();
  } 
  if (exampleList.count()>0)
  {
    if (!compact) ol.writeListItem();
    ol.startQuickIndexItem(extLink,absPath+"examples.html");
    parseText(ol,theTranslator->trExamples());
    ol.endQuickIndexItem();
  } 
  if (Config::searchEngineFlag)
  {
    if (!compact) ol.writeListItem();
    ol.startQuickIndexItem("_cgi","");
    parseText(ol,theTranslator->trSearch());
    ol.endQuickIndexItem();
  } 
  if (compact) 
  {
    ol.endCenter(); 
    ol.writeRuler();
  }
  else 
  {
    ol.endItemList();
  }
  //if (manEnabled) ol.enable(OutputGenerator::Man);
  //if (texEnabled) ol.enable(OutputGenerator::Latex);
  ol.popGeneratorState();
}

void startFile(OutputList &ol,const char *name,const char *title,bool external)
{
  ol.startFile(name,title,external);
  if (!Config::noIndexFlag) writeQuickLinks(ol,TRUE,external);
}

void endFile(OutputList &ol,bool external)
{
  //bool latexEnabled = ol.isEnabled(OutputGenerator::Latex);
  //bool manEnabled   = ol.isEnabled(OutputGenerator::Man);
  //if (latexEnabled) ol.disable(OutputGenerator::Latex);
  //if (manEnabled)   ol.disable(OutputGenerator::Man);
  ol.pushGeneratorState();
  ol.disableAllBut(OutputGenerator::Html);
  ol.writeFooter(0,external); // write the footer
  if (Config::footerFile.isEmpty())
  {
    parseText(ol,theTranslator->trGeneratedAt(
              dateToString(TRUE),
              Config::projectName
             ));
  }
  ol.writeFooter(1,external); // write the link to the picture
  if (Config::footerFile.isEmpty())
  {
    parseText(ol,theTranslator->trWrittenBy());
  }
  ol.writeFooter(2,external); // end the footer
  //if (latexEnabled) ol.enable(OutputGenerator::Latex);
  //if (manEnabled)   ol.enable(OutputGenerator::Man);
  ol.popGeneratorState();
  ol.endFile();
}

// compute the HTML anchors for a list of members
void setAnchors(char id,MemberList *ml)
{
  int count=0;
  MemberDef *md=ml->first();
  while (md)
  {
    QCString anchor;
    anchor.sprintf("%c%d",id,count++);
    //printf("Member %s anchor %s\n",md->name(),anchor.data());
    md->setAnchor(anchor);
    md=ml->next();
  }
}

//----------------------------------------------------------------------------
// read a file with `name' to a string.

QCString fileToString(const char *name)
{
  if (name==0 || name[0]==0) return 0;
  QFile f;

  bool fileOpened=FALSE;
  if (name[0]=='-' && name[1]==0) // read from stdin
  {
    fileOpened=f.open(IO_ReadOnly,stdin);
  }
  else // read from file
  {
    QFileInfo fi(name);
    if (!fi.exists() || !fi.isFile())
    {
      warn("Error: file `%s' not found\n",name);
      return "";
    }
    f.setName(name);
    fileOpened=f.open(IO_ReadOnly);
  }
  if (!fileOpened)  
  {
    warn("Error: cannot open file `%s' for reading\n",name);
    return "";
  }
  int fsize=f.size();
  QCString contents(fsize+2);
  f.readBlock(contents.data(),fsize);
  if (fsize==0 || contents[fsize-1]=='\n') 
    contents[fsize]='\0';
  else
    contents[fsize]='\n';
  contents[fsize+1]='\0';
  f.close();
  return contents;
}

QCString dateToString(bool includeTime)
{
  if (includeTime)
  {
    return convertToQCString(QDateTime::currentDateTime().toString());
  }
  else
  {
    const QDate &d=QDate::currentDate();
    QCString result;
    result.sprintf("%d %s %d",
        d.day(),
        convertToQCString(d.monthName(d.month())).data(),
        d.year());
    return result;
  }
  //QDate date=dt.date();
  //QTime time=dt.time();
  //QCString dtString;
  //dtString.sprintf("%02d:%02d, %04d/%02d/%02d",
  //    time.hour(),time.minute(),date.year(),date.month(),date.day());
  //return dtString;
}


//----------------------------------------------------------------------
// recursive function that returns the number of branches in the 
// inheritance tree that the base class `bcd' is below the class `cd'

int minClassDistance(ClassDef *cd,ClassDef *bcd,int level)
{
  if (cd==bcd) return level; 
  BaseClassListIterator bcli(*cd->baseClasses());
  int m=maxInheritanceDepth; 
  for ( ; bcli.current() ; ++bcli)
  {
    m=QMIN(minClassDistance(bcli.current()->classDef,bcd,level+1),m);
  }
  return m;
}

//static void printArgList(ArgumentList *al)
//{
//  if (al==0) return;
//  ArgumentListIterator ali(*al);
//  Argument *a;
//  printf("(");
//  for (;(a=ali.current());++ali)
//  {
//    printf("t=`%s' n=`%s' v=`%s' ",a->type.data(),!a->name.isEmpty()>0?a->name.data():"",!a->defval.isEmpty()>0?a->defval.data():""); 
//  }
//  printf(")");
//}

// strip any template specifiers that follow className in string s
static QCString trimTemplateSpecifiers(const QCString &className,const QCString &s)
{
  // first we resolve any defines
  //int i=0,p,l;
  //QCString result;
  //QRegExp r("[A-Z_a-z][A-Z_a-z0-9]*");
  //while ((p=r.match(s,i,&l))!=-1)
  //{
  //  if (p>i) result+=s.mid(i,p-i);
  //  result+=resolveDefines(s.mid(p,l));
  //  i=p+l;
  //}
  //if (i<(int)s.length()) result+=s.mid(i,s.length()-i);
  
  // We strip the template arguments following className (if any)
  QCString result=s.copy();
  int l=className.length();
  if (l>0) // there is a class name
  {
    int i,p=0;
    while ((i=result.find(className,p))!=-1) // class name is in the argument type
    {
      uint s=i+l;
      if (s<result.length() && result.at(s)=='<') // class has template args
      {
        int b=1;
        uint e=s+1;
        while (b>0 && e<result.length()) // find matching >
        {
          if (result.at(e)=='<') b++;
          else if (result.at(e)=='>') b--;
          e++;
        }
        // remove template argument
        result=result.left(s)+result.right(result.length()-e);
        if (result.length()>s && (result.at(s)=='*' || result.at(s)=='&'))
        {
          // insert a space to keep the argument in the canonical form
          result=result.left(s)+" "+result.right(result.length()-s);
        }
      }
      p=i+l;
    }
  }
  return result;
}

// removes the (one and only) occurrence of name:: from s.
static QCString trimScope(const QCString &name,const QCString &s)
{
  int scopeOffset=name.length();
  QCString result=s;
  do // for each scope
  {
    QCString tmp;
    QCString scope=name.left(scopeOffset)+"::";
    //printf("Trying with scope=`%s'\n",scope.data());
    
    int i,p=0;
    while ((i=result.find(scope,p))!=-1) // for each occurrence
    {
      tmp+=result.mid(p,i-p); // add part before pattern
      p=i+scope.length();
    }
    tmp+=result.right(result.length()-p); // add trailing part

    scopeOffset=name.findRev("::",scopeOffset-1);
    result = tmp;
  } while (scopeOffset>0);   
  return result;
}

static QCString trimBaseClassScope(BaseClassList *bcl,const QCString &s,int level=0)
{
  //printf("trimBaseClassScope level=%d `%s'\n",level,s.data());
  BaseClassListIterator bcli(*bcl);
  BaseClassDef *bcd;
  for (;(bcd=bcli.current());++bcli)
  {
    ClassDef *cd=bcd->classDef;
    int spos=s.find(cd->name()+"::");
    if (spos!=-1)
    {
      return s.left(spos)+s.right(
                      s.length()-spos-cd->name().length()-2
                     );
    }
    //printf("base class `%s'\n",cd->name().data());
    if (cd->baseClasses()->count()>0)
      trimBaseClassScope(cd->baseClasses(),s,level+1); 
  }
  return s;
}

//----------------------------------------------------------------------
// Matches the arguments list srcAl with the argument list dstAl
// Returns TRUE if the argument lists are equal. Two argument list are 
// considered equal if the number of arguments is equal and the types of all 
// arguments are equal. Furthermore the const and volatile specifiers 
// stored in the list should be equal.

bool matchArguments(ArgumentList *srcAl,ArgumentList *dstAl,
                    const char *cl,const char *ns)
{
  QCString className=cl;
  QCString namespaceName=ns;

  // strip template specialization from class name if present
  int til=className.find('<'),tir=className.find('>');
  if (til!=-1 && tir!=-1 && tir>til) 
  {
    className=className.left(til)+className.right(className.length()-tir-1);
  }

  //printf("matchArguments(%s,%s) className=%s namespaceName=%s\n",
  //    srcAl ? argListToString(srcAl).data() : "",
  //    dstAl ? argListToString(dstAl).data() : "",
  //    cl,ns);

  if (srcAl==0 || dstAl==0)
  {
    return srcAl==dstAl; // at least one of the members is not a function
  }
  
  // handle special case with void argument
  if ( srcAl->count()==0 && dstAl->count()==1 && 
       dstAl->getFirst()->type=="void" )
  { // special case for finding match between func() and func(void)
    Argument *a=new Argument;
    a->type = "void";
    srcAl->append(a);
    return TRUE;
  }
  if ( dstAl->count()==0 && srcAl->count()==1 &&
       srcAl->getFirst()->type=="void" )
  { // special case for finding match between func(void) and func()
    Argument *a=new Argument;
    a->type = "void";
    dstAl->append(a);
    return TRUE;
  }
  
  if (srcAl->count() != dstAl->count())
  {
    return FALSE; // different number of arguments -> no match
  }
  if (srcAl->constSpecifier != dstAl->constSpecifier) 
  {
    return FALSE; // one member is const, the other not -> no match
  }
  if (srcAl->volatileSpecifier != dstAl->volatileSpecifier)
  {
    return FALSE; // one member is volatile, the other not -> no match
  }

  // so far the argument list could match, so we need to compare the types of
  // all arguments.
  ArgumentListIterator srcAli(*srcAl),dstAli(*dstAl);
  Argument *srcA,*dstA;
  for (;(srcA=srcAli.current(),dstA=dstAli.current());++srcAli,++dstAli)
  {
    QCString srcAType=trimTemplateSpecifiers(className,srcA->type);
    QCString dstAType=trimTemplateSpecifiers(className,dstA->type);
    if (srcAType.left(6)=="class ") srcAType=srcAType.right(srcAType.length()-6);
    if (dstAType.left(6)=="class ") dstAType=dstAType.right(dstAType.length()-6);

    if (srcAType!=dstAType) // check if the argument only differs on name 
    {
      //printf("scope=`%s': `%s' <=> `%s'\n",className.data(),srcAType.data(),dstAType.data());

      QCString srcScope;
      QCString dstScope;

      // strip redundant scope specifiers
      if (!className.isEmpty())
      {
        srcAType=trimScope(className,srcAType);
        dstAType=trimScope(className,dstAType);
        //printf("trimScope: `%s' <=> `%s'\n",srcAType.data(),dstAType.data());
        ClassDef *cd;
        if (!namespaceName.isEmpty())
          cd=getClass(namespaceName+"::"+className);
        else
          cd=getClass(className);
        if (cd && cd->baseClasses()->count()>0)
        {
          srcAType=trimBaseClassScope(cd->baseClasses(),srcAType); 
          dstAType=trimBaseClassScope(cd->baseClasses(),dstAType); 
        }
        //printf("trimBaseClassScope: `%s' <=> `%s'\n",srcAType.data(),dstAType.data());
      }
      if (!namespaceName.isEmpty())
      {
        srcAType=trimScope(namespaceName,srcAType);
        dstAType=trimScope(namespaceName,dstAType);
      }
      //printf("srcAType=%s dstAType=%s\n",srcAType.data(),dstAType.data());
      
      //printf("`%s' <=> `%s'\n",srcAType.data(),dstAType.data());
      uint srcPos=0,dstPos=0; 
      bool equal=TRUE;
      while (srcPos<srcAType.length() && dstPos<dstAType.length() && equal)
      {
        equal=srcAType.at(srcPos)==dstAType.at(dstPos);
        if (equal) srcPos++,dstPos++; 
      }
      if (srcPos<srcAType.length() && dstPos<dstAType.length())
      {
        // if nothing matches or the match ends in the middle or at the
        // end of a string then there is no match
        //if (srcPos==0 || isalnum(srcAType.at(srcPos-1)) ||
        //    dstPos==0 || isalnum(dstAType.at(dstPos-1))) { printf("No match1\n"); return FALSE; }
        int srcStart=srcPos;
        int dstStart=dstPos;
        if (srcPos==0 || dstPos==0) return FALSE;
        if (isId(srcAType.at(srcPos)) && isId(dstAType.at(dstPos)))
        {
          // check if a name if already found -> if no then there is no match
          if (!srcA->name.isEmpty() || !dstA->name.isEmpty()) return FALSE;
          while (srcPos<srcAType.length() && isId(srcAType.at(srcPos))) srcPos++;
          while (dstPos<dstAType.length() && isId(dstAType.at(dstPos))) dstPos++;
          if (srcPos<srcAType.length() || dstPos<dstAType.length()) return FALSE;
          // find the start of the name
          while (srcStart>=0 && isId(srcAType.at(srcStart))) srcStart--;
          while (dstStart>=0 && isId(dstAType.at(dstStart))) dstStart--;
          if (srcStart>0) // move the name from the type to the name field
          {
            srcA->name=srcAType.right(srcAType.length()-srcStart-1);
            srcA->type=srcAType.left(srcStart+1).stripWhiteSpace(); 
          } 
          if (dstStart>0) // move the name from the type to the name field
          {
            dstA->name=dstAType.right(dstAType.length()-dstStart-1);
            dstA->type=dstAType.left(dstStart+1).stripWhiteSpace(); 
          } 
        }
        else
        {
          // otherwise we assume that a name starts at the current position.
          while (srcPos<srcAType.length() && isId(srcAType.at(srcPos))) srcPos++;
          while (dstPos<dstAType.length() && isId(dstAType.at(dstPos))) dstPos++;
          // if nothing more follows for both types then we assume we have
          // found a match. Note that now `signed int' and `signed' match, but
          // seeing that int is not a name can only be done by looking at the
          // semantics.

          if (srcPos!=srcAType.length() || dstPos!=dstAType.length()) { return FALSE; }
          dstA->name=dstAType.right(dstAType.length()-dstStart);
          dstA->type=dstAType.left(dstStart).stripWhiteSpace();
          srcA->name=srcAType.right(dstAType.length()-srcStart);
          srcA->type=srcAType.left(srcStart).stripWhiteSpace();
        }
      }
      else if (dstPos<dstAType.length())
      {
        if (!isspace(dstAType.at(dstPos))) // maybe the names differ
        {
          int startPos=dstPos;
          while (dstPos<dstAType.length() && isId(dstAType.at(dstPos))) dstPos++;
          if (dstPos!=dstAType.length()) return FALSE; // more than a difference in name -> no match
          while (startPos>=0 && isId(dstAType.at(startPos))) startPos--;
          if (startPos>0)
          {
            dstA->name=dstAType.right(dstAType.length()-startPos-1);
            dstA->type=dstAType.left(startPos+1).stripWhiteSpace(); 
          } 
        }
        else // maybe dst has a name while src has not
        {
          dstPos++;
          int startPos=dstPos;
          while (dstPos<dstAType.length() && isId(dstAType.at(dstPos))) dstPos++;
          if (dstPos!=dstAType.length()) return FALSE; // nope not a name -> no match
          else // its a name (most probably) so move it
          {
            dstA->name=dstAType.right(dstAType.length()-startPos);
            dstA->type=dstAType.left(startPos).stripWhiteSpace();
          }
        }
      }
      else if (srcPos<srcAType.length())
      {
        if (!isspace(srcAType.at(srcPos))) // maybe the names differ
        {
          int startPos=srcPos;
          while (srcPos<srcAType.length() && isId(srcAType.at(srcPos))) srcPos++;
          if (srcPos!=srcAType.length()) return FALSE; // more than a difference in name -> no match
          while (startPos>=0 && isId(srcAType.at(startPos))) startPos--;
          if (startPos>0)
          {
            srcA->name=srcAType.right(srcAType.length()-startPos-1);
            srcA->type=srcAType.left(startPos+1).stripWhiteSpace(); 
          } 
        }
        else // maybe src has a name while dst has not
        {
          srcPos++;
          int startPos=srcPos;
          while (srcPos<srcAType.length() && isId(srcAType.at(srcPos))) srcPos++;
          if (srcPos!=srcAType.length()) return FALSE; // nope not a name -> no match
          else // its a name (most probably) so move it
          {
            srcA->name=srcAType.right(srcAType.length()-startPos);
            srcA->type=srcAType.left(startPos).stripWhiteSpace();
          }
        }
      }
      else // without scopes the names match exactly
      {
      }
      return TRUE;
    }
    //printf("match exactly\n");
    if (srcA->name.isEmpty() && dstA->name.isEmpty()) 
                          // arguments match exactly but no name ->
                          // see if we can find the name
    {
      int i=srcAType.length()-1;
      while (i>=0 && isId(srcAType.at(i))) i--;
      if (i>0 && i<(int)srcAType.length()-1 && srcAType.at(i)!=':') 
        // there is (probably) a name
      {
        srcA->name=srcAType.right(srcAType.length()-i-1);
        srcA->type=srcAType.left(i+1).stripWhiteSpace();
        dstA->name=dstAType.right(dstAType.length()-i-1);
        dstA->type=dstAType.left(i+1).stripWhiteSpace();
      } 
    }
    else if (!dstA->name.isEmpty())
    {
      srcA->name=dstA->name.copy();
    }
    else if (!srcA->name.isEmpty())
    {
      dstA->name=srcA->name.copy(); 
    }
  }
  //printf("Match found!\n");
  return TRUE; // all arguments match 
}

// merges the initializer of two argument lists
// pre:  the types of the arguments in the list should match.
void mergeArguments(ArgumentList *srcAl,ArgumentList *dstAl)
{
  //printf("mergeArguments `%s', `%s'\n",
  //    argListToString(srcAl).data(),argListToString(dstAl).data());
  //printArgList(srcAl);printf(" <=> ");
  //printArgList(dstAl);printf("\n");
  if (srcAl==0 || dstAl==0 || srcAl->count()!=dstAl->count())
  {
    return; // invalid argument lists -> do not merge
  }

  ArgumentListIterator srcAli(*srcAl),dstAli(*dstAl);
  Argument *srcA,*dstA;
  for (;(srcA=srcAli.current(),dstA=dstAli.current());++srcAli,++dstAli)
  {
    if (srcA->defval.isEmpty() && !dstA->defval.isEmpty())
    {
      //printf("Defval changing `%s'->`%s'\n",srcA->defval.data(),dstA->defval.data());
      srcA->defval=dstA->defval.copy();
    }
    else if (!srcA->defval.isEmpty() && dstA->defval.isEmpty())
    {
      //printf("Defval changing `%s'->`%s'\n",dstA->defval.data(),srcA->defval.data());
      dstA->defval=srcA->defval.copy();
    }
    if (srcA->name.isEmpty() && !dstA->name.isEmpty())
    {
      //printf("type: `%s':=`%s'\n",srcA->type.data(),dstA->type.data());
      //printf("name: `%s':=`%s'\n",srcA->name.data(),dstA->name.data());
      srcA->type = dstA->type.copy();
      srcA->name = dstA->name.copy();
    }
    else if (!srcA->name.isEmpty() && dstA->name.isEmpty())
    {
      //printf("type: `%s':=`%s'\n",dstA->type.data(),srcA->type.data());
      //printf("name: `%s':=`%s'\n",dstA->name.data(),srcA->name.data());
      dstA->type = srcA->type.copy();
      dstA->name = dstA->name.copy();
    }
    else if (!srcA->name.isEmpty() && !dstA->name.isEmpty())
    {
      srcA->name = dstA->name.copy();
    }
    int i1=srcA->type.find("::"),
        i2=dstA->type.find("::"),
        j1=srcA->type.length()-i1-2,
        j2=dstA->type.length()-i2-2;
    if (i1!=-1 && i2==-1 && srcA->type.right(j1)==dstA->type)
    {
      //printf("type: `%s':=`%s'\n",dstA->type.data(),srcA->type.data());
      //printf("name: `%s':=`%s'\n",dstA->name.data(),srcA->name.data());
      dstA->type = srcA->type.left(i1+2)+dstA->type;
      dstA->name = dstA->name.copy();
    }
    else if (i1==-1 && i2!=-1 && dstA->type.right(j2)==srcA->type)
    {
      //printf("type: `%s':=`%s'\n",srcA->type.data(),dstA->type.data());
      //printf("name: `%s':=`%s'\n",dstA->name.data(),srcA->name.data());
      srcA->type = dstA->type.left(i2+2)+srcA->type;
      srcA->name = dstA->name.copy();
    }
    if (srcA->docs.isEmpty() && !dstA->docs.isEmpty())
    {
      srcA->docs = dstA->docs.copy();
    }
    else if (dstA->docs.isEmpty() && !srcA->docs.isEmpty())
    {
      dstA->docs = srcA->docs.copy();
    }
  }
  //printf("result mergeArguments `%s', `%s'\n",
  //    argListToString(srcAl).data(),argListToString(dstAl).data());
}

/*!
 * Searches for a member definition given its name `memberName' as a string.
 * memberName may also include a (partial) scope to indicate the scope
 * in which the member is located.
 *
 * The parameter `scName' is a string representing the name of the scope in 
 * which the link was found.
 *
 * In case of a function args contains a string representation of the 
 * argument list. Passing 0 means the member has no arguments. 
 * Passing "()" means any argument list will do, but "()" is preferred.
 *
 * The function returns TRUE if the member is known and documented or
 * FALSE if it is not.
 * If TRUE is returned parameter `md' contains a pointer to the member 
 * definition. Furthermore exactly one of the parameter `cd', `nd', or `fd' 
 * will be non-zero:
 *   - if `cd' is non zero, the member was found in a class pointed to by cd.
 *   - if `nd' is non zero, the member was found in a namespace pointed to by nd.
 *   - if `fd' is non zero, the member was found in the global namespace of
 *     file fd.
 */
bool getDefs(const QCString &scName,const QCString &memberName, 
             const char *args,
             MemberDef *&md, 
             ClassDef *&cd, FileDef *&fd, NamespaceDef *&nd, GroupDef *&gd)
{
  fd=0, md=0, cd=0, nd=0, gd=0;
  if (memberName.isEmpty()) return FALSE; /* empty name => nothing to link */

  QCString scopeName=scName.copy();
  //printf("Search for name=%s args=%s in scope=%s\n",
  //          memberName.data(),args,scopeName.data());
  
  int is,im=0,pm=0;
  // strip common part of the scope from the scopeName
  while ((is=scopeName.findRev("::"))!=-1 && 
         (im=memberName.find("::",pm))!=-1 &&
         (scopeName.right(scopeName.length()-is-2)==memberName.mid(pm,im-pm))
        )
  {
    scopeName=scopeName.left(is); 
    pm=im+2;
  }
  //printf("result after scope corrections scope=%s name=%s\n",
  //          scopeName.data(),memberName.data());
  
  QCString mName=memberName;
  QCString mScope;
  if ((im=memberName.findRev("::"))!=-1)
  {
    mScope=memberName.left(im); 
    mName=memberName.right(memberName.length()-im-2);
  }
  
  // handle special the case where both scope name and member scope are equal
  if (mScope==scopeName) scopeName.resize(0);

  //printf("mScope=`%s' mName=`%s'\n",mScope.data(),mName.data());
  
  MemberName *mn = memberNameDict[mName];
  if (mn && !(scopeName.isEmpty() && mScope.isEmpty()))
  {
    //printf("  >member name found\n");
    int scopeOffset=scopeName.length();
    do
    {
      QCString className = scopeName.left(scopeOffset);
      if (!className.isEmpty() && !mScope.isEmpty())
      {
        className.append("::"+mScope);
      }
      else if (!mScope.isEmpty())
      {
        className=mScope.copy();
      }
      //printf("Trying class scope %s\n",className.data());

      ClassDef *fcd=0;
      if ((fcd=getClass(className)) &&  // is it a documented class
           fcd->isLinkable() 
         )
      {
        //printf("  Found fcd=%p\n",fcd);
        MemberDef *mmd=mn->first();
        int mdist=maxInheritanceDepth; 
        ArgumentList *argList=0;
        if (args)
        {
          argList=new ArgumentList;
          stringToArgumentList(args,argList);
        }
        while (mmd)
        {
          if (mmd->isLinkable())
          {
            bool match=args==0 || matchArguments(mmd->argumentList(),argList); 
            if (match)
            {
              ClassDef *mcd=mmd->memberClass();
              int m=minClassDistance(fcd,mcd);
              if (m<mdist && mcd->isLinkable())
              {
                mdist=m;
                cd=mcd;
                md=mmd;
              }
            }
          }
          mmd=mn->next();
        }
        if (argList)
        {
          delete argList; argList=0;
        }
        if (mdist==maxInheritanceDepth && !strcmp(args,"()"))
          // no exact match found, but if args="()" an arbitrary member will do
        {
          //printf("  >Searching for arbitrary member\n");
          mmd=mn->last();
          while (mmd)
          {
            if (//(mmd->protection()!=Private || Config::extractPrivateFlag) &&
                //(
                //mmd->hasDocumentation() 
                /*mmd->detailsAreVisible()*/
                //|| mmd->isReference()
                //)
                mmd->isLinkable()
               )
            {
              ClassDef *mcd=mmd->memberClass();
              //printf("  >Class %s found\n",mcd->name().data());
              int m=minClassDistance(fcd,mcd);
              if (m<mdist && mcd->isLinkable())
              {
                //printf("Class distance %d\n",m);
                mdist=m;
                cd=mcd;
                md=mmd;
              }
            }
            mmd=mn->prev();
          }
        }
        //printf("  >Succes=%d\n",mdist<maxInheritanceDepth);
        if (mdist<maxInheritanceDepth) return TRUE; /* found match */
      } 
      /* goto the parent scope */
      
      if (scopeOffset==0)
      {
        scopeOffset=-1;
      }
      else if ((scopeOffset=scopeName.findRev("::",scopeOffset-1))==-1)
      {
        scopeOffset=0;
      }
    } while (scopeOffset>=0);
    
    // unknown or undocumented scope 
  }
  else // maybe an namespace, file or group member ?
  {
    //printf("Testing for global function scopeName=`%s' mScope=`%s' :: mName=`%s'\n",
    //              scopeName.data(),mScope.data(),mName.data());
    //printf("  >member name found\n");
    if ((mn=functionNameDict[mName])) // name is known
    {
      NamespaceDef *fnd=0;
      int scopeOffset=scopeName.length();
      do
      {
        QCString namespaceName = scopeName.left(scopeOffset);
        if (!namespaceName.isEmpty() && !mScope.isEmpty())
        {
          namespaceName.append("::"+mScope);
        }
        else if (!mScope.isEmpty())
        {
          namespaceName=mScope.copy();
        }
        if (!namespaceName.isEmpty() && 
            (fnd=namespaceDict[namespaceName]) &&
            fnd->isLinkable()
           )
        {
          //printf("Function inside existing namespace `%s'\n",namespaceName.data());
          bool found=FALSE;
          MemberDef *mmd=mn->first();
          while (mmd && !found)
          {
            //printf("mmd->getNamespace()=%p fnd=%p\n",
            //    mmd->getNamespace(),fnd);
            if (mmd->getNamespace()==fnd && 
                //(mmd->isReference() || mmd->hasDocumentation())
                mmd->isLinkable()
               )
            { // namespace is found
              bool match=TRUE;
              ArgumentList *argList=0;
              if (args)
              {
                argList=new ArgumentList;
                stringToArgumentList(args,argList);
                match=matchArguments(mmd->argumentList(),argList); 
              }
              if (match)
              {
                nd=fnd;
                md=mmd;
                found=TRUE;
              }
              if (args)
              {
                delete argList; argList=0;
              }
            }
            mmd=mn->next();
          }
          if (!found && !strcmp(args,"()")) 
            // no exact match found, but if args="()" an arbitrary 
            // member will do
          {
            MemberDef *mmd=mn->last(); // searching backward will get 
            // the first defined!
            while (mmd && !found)
            {
              if (mmd->getNamespace()==fnd && 
                  //(mmd->isReference() || mmd->hasDocumentation())
                  mmd->isLinkable()
                 )
              {
                nd=fnd;
                md=mmd;
                found=TRUE;
              }
              mmd=mn->prev();
            }
          }
          if (found) return TRUE;
        }
        else // no scope => global function
        {
          //printf("Function with global scope `%s'\n",namespaceName.data());
          md=mn->first();
          while (md)
          {
            if (md->isLinkable())
            {
              fd=md->getFileDef();
              gd=md->groupDef();
              //printf("md->name()=`%s' md->args=`%s' fd=%p gd=%p\n",
              //    md->name().data(),args,fd,gd);
              bool inGroup=FALSE;
              if ((fd && fd->isLinkable()) || 
                  (inGroup=(gd && gd->isLinkable()))
                 )
              {
                if (inGroup) fd=0;
                //printf("fd=%p gd=%p inGroup=`%d' args=`%s'\n",fd,gd,inGroup,args);
                bool match=TRUE;
                ArgumentList *argList=0;
                if (args && !md->isDefine())
                {
                  argList=new ArgumentList;
                  stringToArgumentList(args,argList);
                  match=matchArguments(md->argumentList(),argList); 
                  delete argList; argList=0;
                }
                if (match) 
                {
                  //printf("Found match!\n");
                  return TRUE;
                }
              }
            }
            md=mn->next();
          }
          if (!strcmp(args,"()"))
          {
            // no exact match found, but if args="()" an arbitrary 
            // member will do
            md=mn->last();
            while (md)
            {
              if (md->isLinkable())
              {
                //printf("md->name()=`%s'\n",md->name().data());
                fd=md->getFileDef();
                gd=md->groupDef();
                bool inGroup=FALSE;
                if ((fd && fd->isLinkable()) |+
                    (inGroup=(gd && gd->isLinkable()))
                   )
                {
                  if (inGroup) fd=0;
                  return TRUE;
                }
              }
              md=mn->prev();
            }
          }
        }
        if (scopeOffset==0)
        {
          scopeOffset=-1;
        }
        else if ((scopeOffset=scopeName.findRev("::",scopeOffset-1))==-1)
        {
          scopeOffset=0;
        }
      } while (scopeOffset>=0);
    }
    else
    {
      //printf("Unknown function `%s'\n",mName.data());
    }
  }
  return FALSE;
}

/*!
 * Searches for a scope definition given its name as a string via parameter
 * `scope'. 
 *
 * The parameter `docScope' is a string representing the name of the scope in 
 * which the `scope' string was found.
 *
 * The function returns TRUE if the scope is known and documented or
 * FALSE if it is not.
 * If TRUE is returned exactly one of the parameter `cd', `nd' 
 * will be non-zero:
 *   - if `cd' is non zero, the scope was a class pointed to by cd.
 *   - if `nd' is non zero, the scope was a namespace pointed to by nd.
 */
bool getScopeDefs(const char *docScope,const char *scope,
                         ClassDef *&cd, NamespaceDef *&nd)
{
  cd=0;nd=0;

  QCString scopeName=scope;
  //printf("getScopeDefs: docScope=`%s' scope=`%s'\n",docScope,scope);
  if (scopeName.isEmpty()) return FALSE;

  QCString docScopeName=docScope;
  int scopeOffset=docScopeName.length();

  do // for each possible docScope (from largest to and including empty)
  {
    QCString fullName=scopeName.copy();
    if (scopeOffset>0) fullName.prepend(docScopeName.left(scopeOffset)+"::");
    
    if ((cd=getClass(fullName)) && cd->isLinkable())
    {
      return TRUE; // class link written => quit 
    }
    else if ((nd=namespaceDict[fullName]) && nd->isLinkable())
    {
      return TRUE; // namespace link written => quit 
    }
    if (scopeOffset==0)
    {
      scopeOffset=-1;
    }
    else if ((scopeOffset=docScopeName.findRev("::",scopeOffset-1))==-1)
    {
      scopeOffset=0;
    }
  } while (scopeOffset>=0);
  
  return FALSE;
}

/*!
 * generate a reference to a class, namespace or member.
 * `scName' is the name of the scope that contains the documentation 
 * string that is returned.
 * `name' is the name that we want to link to.
 * `name' may have five formats:
 *    1) "ScopeName"
 *    2) "memberName()"    one of the (overloaded) function or define 
 *                         with name memberName.
 *    3) "memberName(...)" a specific (overloaded) function or define 
 *                         with name memberName
 *    4) "::memberName     a non-function member or define
 *    5) ("ScopeName::")+"memberName()" 
 *    6) ("ScopeName::")+"memberName(...)" 
 *    7) ("ScopeName::")+"memberName" 
 * instead of :: the # symbol may also be used.
 */

bool generateRef(OutputList &ol,const char *scName,
                 const char *name,bool inSeeBlock,const char *rt)
{
  //printf("generateRef(scName=%s,name=%s,rt=%s)\n",scName,name,rt);
  
  QCString tmpName = substitute(name,"#","::");
  QCString linkText = rt;
  int scopePos=tmpName.findRev("::");
  int bracePos=tmpName.findRev('('); // reverse is needed for operator()(...)
  if (bracePos==-1) // simple name
  {
    ClassDef *cd=0;
    NamespaceDef *nd=0;
    if (linkText.isEmpty()) linkText=tmpName;
    // check if this is a class or namespace reference
    if (scName!=tmpName && getScopeDefs(scName,name,cd,nd))
    {
      if (cd) // scope matches that of a class
      {
        ol.writeObjectLink(cd->getReference(),
            cd->getOutputFileBase(),0,linkText);
        if (!cd->isReference() /*&& !Config::pdfHyperFlag*/) 
        {
          writePageRef(ol,cd->name(),0);
        }
      }
      else // scope matches that of a namespace
      {
        ol.writeObjectLink(nd->getReference(),
            nd->getOutputFileBase(),0,linkText);
        if (!nd->getReference() /*&& !Config::pdfHyperFlag*/) 
        {
          writePageRef(ol,nd->name(),0);
        }
      }
      // link has been written, stop now.
      return TRUE;
    }
    else if (scName==tmpName || (!inSeeBlock && scopePos==-1)) // nothing to link => output plain text
    {
      ol.docify(linkText);
      // text has been written, stop now.
      return FALSE;
    }
    // continue search...
    linkText = rt; 
  }
  
  // extract scope
  QCString scopeStr=scName;

  //printf("scopeContext=%s scopeUser=%s\n",scopeContext.data(),scopeUser.data());

  // extract userscope+name
  int endNamePos=bracePos!=-1 ? bracePos : tmpName.length();
  QCString nameStr=tmpName.left(endNamePos);

  // extract arguments
  QCString argsStr;
  if (bracePos!=-1) argsStr=tmpName.right(tmpName.length()-bracePos);
  
  // create a default link text if none was explicitly given
  bool explicitLink=TRUE;
  if (linkText.isEmpty())
  {
    //if (!scopeUser.isEmpty()) linkText=scopeUser+"::";
    linkText=nameStr;
    if (linkText.left(2)=="::") linkText=linkText.right(linkText.length()-2);
    explicitLink=FALSE;
  } 
  //printf("scope=`%s' name=`%s' arg=`%s' linkText=`%s'\n",
  //       scopeStr.data(),nameStr.data(),argsStr.data(),linkText.data());

  MemberDef *md    = 0;
  ClassDef *cd     = 0;
  FileDef *fd      = 0;
  NamespaceDef *nd = 0;
  GroupDef *gd     = 0;

  //printf("Try with scName=`%s' nameStr=`%s' argsStr=`%s'\n",
  //        scopeStr.data(),nameStr.data(),argsStr.data());

  // check if nameStr is a member or global.
  if (getDefs(scopeStr,nameStr,argsStr,md,cd,fd,nd,gd))
  {
    //printf("after getDefs nd=%p\n",nd);
    QCString anchor = md->isLinkable() ? md->anchor() : 0;
    QCString cName,aName;
    if (cd) // nameStr is a member of cd
    {
      //printf("addObjectLink(%s,%s,%s,%s)\n",cd->getReference(),
      //      cd->getOutputFileBase(),anchor.data(),resultName.stripWhiteSpace().data());
      ol.writeObjectLink(cd->getReference(),cd->getOutputFileBase(),
          anchor,linkText.stripWhiteSpace());
      cName=cd->name();
      aName=md->anchor();
    }
    else if (nd) // nameStr is a member of nd
    {
      //printf("writing namespace link\n");
      ol.writeObjectLink(nd->getReference(),nd->getOutputFileBase(),
          anchor,linkText.stripWhiteSpace());
      cName=nd->name();
      aName=md->anchor();
    }
    else if (fd) // nameStr is a global in file fd
    {
      //printf("addFileLink(%s,%s,%s)\n",fd->getOutputFileBase(),anchor.data(),
      //        resultName.stripWhiteSpace().data());
      ol.writeObjectLink(fd->getReference(),fd->getOutputFileBase(),
          anchor,linkText.stripWhiteSpace());
      cName=fd->name();
      aName=md->anchor();
    }
    else if (gd)
    {
      //printf("addGroupLink(%s,%s,%s)\n",fd->getOutputFileBase().data(),anchor.data(),
      //        gd->name().data());
      ol.writeObjectLink(gd->getReference(),gd->getOutputFileBase(),
          anchor,linkText.stripWhiteSpace());
      cName=gd->name();
      aName=md->anchor();
    }
    else // should not be reached
    {
      //printf("add no link fd=cd=0\n");
      ol.docify(linkText);
    }

    // for functions we add the arguments if explicitly specified or else "()"
    if (!rt && (md->isFunction() || md->isPrototype() || md->isSignal() || md->isSlot() || md->isDefine())) 
    {
      if (argsStr.isEmpty() && (!md->isDefine() || md->argsString()!=0))
        ol.writeString("()");
      else
        ol.docify(argsStr);
    }

    // generate the page reference (for LaTeX)
    if (/*!Config::pdfHyperFlag && */(!cName.isEmpty() || !aName.isEmpty()))
    {
      if (
          (cd && cd->isLinkableInProject()) || 
          (fd && !fd->isReference()) ||
          (nd && !nd->isReference()) 
         ) 
      {
        writePageRef(ol,cName,aName);
      }
    }
    return TRUE;
  }
  else if (inSeeBlock && !nameStr.isEmpty() && (gd=groupDict[nameStr]))
  { // group link
    ol.startTextLink(gd->getOutputFileBase(),0);
    if (rt) // explict link text
      ol.docify(rt);
    else // use group title as the default link text
    {
      ol.docify(gd->groupTitle());
    }
    ol.endTextLink();
    return TRUE;
  }

  // nothing found
  if (rt) 
    ol.docify(rt); 
  else 
  {
    ol.docify(linkText);
    if (!argsStr.isEmpty()) ol.docify(argsStr);
  }
  return FALSE;
}

//----------------------------------------------------------------------
// General function that generates the HTML code for a reference to some
// file, class or member from text `lr' within the context of class `clName'. 
// This link has the text 'lt' (if not 0), otherwise `lr' is used as a
// basis for the link's text.
// returns TRUE if a link could be generated.

bool generateLink(OutputList &ol,const char *clName,
                     const char *lr,bool inSeeBlock,const char *lt)
{
  QCString linkRef=lr;
  //PageInfo *pi=0;
  //printf("generateLink(%s,%s,%s) inSeeBlock=%d\n",clName,lr,lt,inSeeBlock);
  //FileInfo *fi=0;
  FileDef *fd;
  GroupDef *gd;
  PageInfo *pi;
  bool ambig;
  if (linkRef.isEmpty()) // no reference name!
  {
    ol.docify(lt);
    return FALSE;
  }
  else if ((pi=pageDict[linkRef])) // link to a page
  {
    ol.writeObjectLink(0,pi->name,0,lt);  
    return TRUE;
  }
  else if ((pi=exampleDict[linkRef])) // link to an example
  {
    ol.writeObjectLink(0,convertSlashes(pi->name,TRUE)+"-example",0,lt);
    return TRUE;
  }
  else if ((gd=groupDict[linkRef])) // link to a group
  {
    ol.startTextLink(gd->getOutputFileBase(),0);
    if (lt)
      ol.docify(lt);
    else
      ol.docify(gd->groupTitle());
    ol.endTextLink();
    return TRUE;
  }
  else if ((fd=findFileDef(&inputNameDict,linkRef,ambig))
       && fd->isLinkable())
  {
        // link to documented input file
    ol.writeObjectLink(fd->getReference(),fd->getOutputFileBase(),0,lt);
    return TRUE;
  }
  else // probably a class or member reference
  {
    return generateRef(ol,clName,lr,inSeeBlock,lt);
  }
}

void generateFileRef(OutputList &ol,const char *name,const char *text)
{
  QCString linkText = text ? text : name;
  //FileInfo *fi;
  FileDef *fd;
  bool ambig;
  if ((fd=findFileDef(&inputNameDict,name,ambig)) && 
      fd->isLinkable()) 
    // link to documented input file
    ol.writeObjectLink(fd->getReference(),fd->getOutputFileBase(),0,linkText);
  else
    ol.docify(linkText); 
}

//----------------------------------------------------------------------

QCString substituteClassNames(const QCString &s)
{
  int i=0,l,p;
  QCString result;
  QRegExp r("[a-z_A-Z][a-z_A-Z0-9]*");
  while ((p=r.match(s,i,&l))!=-1)
  {
    QCString *subst;
    if (p>i) result+=s.mid(i,p-i);
    if ((subst=substituteDict[s.mid(p,l)]))
    {
      result+=*subst;
    }
    else
    {
      result+=s.mid(p,l);
    }
    i=p+l;
  }
  result+=s.mid(i,s.length()-i);
  return result;
}

//----------------------------------------------------------------------

QCString convertSlashes(const QCString &s,bool dots)
{
  QCString result;
  int i,l=s.length();
  for (i=0;i<l;i++)
    if (s.at(i)!='/' && (!dots || s.at(i)!='.'))
    {
      if (Config::caseSensitiveNames)
      {
        result+=s[i]; 
      }
      else
      {
        result+=tolower(s[i]); 
      }
    }
    else 
      result+="_";
  return result;
}

//----------------------------------------------------------------------
// substitute all occurences of `src' in `s' by `dst'

QCString substitute(const char *s,const char *src,const char *dst)
{
  // TODO: optimize by using strstr() instead of find
  QCString input=s;
  QCString output;
  int i=0,p;
  while ((p=input.find(src,i))!=-1)
  {
    output+=input.mid(i,p-i);
    output+=dst;
    i=p+strlen(src);
  }
  output+=input.mid(i,input.length()-i);
  return output;
}

//----------------------------------------------------------------------

FileDef *findFileDef(const FileNameDict *fnDict,const char *n,bool &ambig)
{
  ambig=FALSE;
  QCString name=n;
  QCString path;
  if (name.isEmpty()) return 0;
  int slashPos=QMAX(name.findRev('/'),name.findRev('\\'));
  if (slashPos!=-1)
  {
    path=name.left(slashPos+1);
    name=name.right(name.length()-slashPos-1); 
  }
  //printf("findFileDef path=`%s' name=`%s'\n",path.data(),name.data());
  if (name.isEmpty()) return 0;
  FileName *fn;
  if ((fn=(*fnDict)[name]))
  {
    if (fn->count()==1)
    {
      return fn->first();
    }
    else // file name alone is ambigious
    {
      int count=0;
      FileDef *fd=fn->first();
      FileDef *lastMatch=0;
      while (fd)
      {
        if (path.isEmpty() || fd->getPath().right(path.length())==path) 
        { 
          count++; 
          lastMatch=fd; 
        }
        fd=fn->next();
      }
      ambig=(count>1);
      return lastMatch;
    }
  }
  return 0;
}

//----------------------------------------------------------------------

void showFileDefMatches(const FileNameDict *fnDict,const char *n)
{
  QCString name=n;
  QCString path;
  int slashPos=QMAX(name.findRev('/'),name.findRev('\\'));
  if (slashPos!=-1)
  {
    path=name.left(slashPos+1);
    name=name.right(name.length()-slashPos-1); 
  }
  FileName *fn;
  if ((fn=(*fnDict)[name]))
  {
    FileDef *fd=fn->first();
    while (fd)
    {
      if (path.isEmpty() || fd->getPath().right(path.length())==path)
      {
        msg("   %s\n",fd->absFilePath().data());
      }
      fd=fn->next();
    }
  }
}

//----------------------------------------------------------------------

void setFileNameForSections(QList<QCString> *anchorList,const char *fileName)
{
  if (!anchorList) return;
  QCString *s=anchorList->first();
  while (s)
  {
    SectionInfo *si=0;
    if (!s->isEmpty() && (si=sectionDict[*s])) si->fileName=fileName;
    s=anchorList->next();
  }
}

//----------------------------------------------------------------------

QCString substituteKeywords(const QCString &s,const char *title)
{
  QCString result = s.copy();
  if (title) result = substitute(result,"$title",title);
  result = substitute(result,"$datetime",dateToString(TRUE));
  result = substitute(result,"$date",dateToString(FALSE));
  result = substitute(result,"$doxygenversion",versionString);
  result = substitute(result,"$projectname",Config::projectName);
  result = substitute(result,"$projectnumber",Config::projectNumber);
  return result;
}
    
//----------------------------------------------------------------------

/*! Returns the character index within \a name of the first prefix
 *  in Config::ignorePrefixList that matches \a name at the left hand side,
 *  or zero if no match was found
 */ 
int getPrefixIndex(const QCString &name)
{
  char *s = Config::ignorePrefixList.first();
  while (s)
  {
    const char *ps=s;
    const char *pd=name.data();
    int i=0;
    while (*ps!=0 && *pd!=0 && *ps==*pd) ps++,pd++,i++;
    if (*ps==0 && *pd!=0)
    {
      return i;
    }
    s = Config::ignorePrefixList.next();
  }
  return 0;
}

//----------------------------------------------------------------------------

static void initBaseClassHierarchy(BaseClassList *bcl)
{
  BaseClassListIterator bcli(*bcl);
  for ( ; bcli.current(); ++bcli)
  {
    ClassDef *cd=bcli.current()->classDef;
    if (cd->baseClasses()->count()==0) // no base classes => new root
    {
      initBaseClassHierarchy(cd->baseClasses());
    }
    cd->visited=FALSE;
  }
}

//----------------------------------------------------------------------------

void initClassHierarchy(ClassList *cl)
{
  ClassListIterator cli(*cl);
  ClassDef *cd;
  for ( ; (cd=cli.current()); ++cli)
  {
    cd->visited=FALSE;
    initBaseClassHierarchy(cd->baseClasses());
  }
}

//----------------------------------------------------------------------------

bool hasVisibleRoot(BaseClassList *bcl)
{
  BaseClassListIterator bcli(*bcl);
  for ( ; bcli.current(); ++bcli)
  {
    ClassDef *cd=bcli.current()->classDef;
    if (cd->isVisibleInHierarchy()) return TRUE;
    hasVisibleRoot(cd->baseClasses());
  }
  return FALSE;
}