kstandarddirs.cpp

来自「konqueror3 embedded版本, KDE环境下的当家浏览器的嵌入式版」· C++ 代码 · 共 1,677 行 · 第 1/3 页

       if (slash < 0)
	   rest = relpath.left(relpath.length() - 1);
       else {
	   path = relpath.left(slash);
	   rest = relpath.mid(slash + 1);
       }
    }

    if (prefix.isEmpty()) //for sanity
      return;
#ifdef Q_WS_WIN
    assert(prefix.at(prefix.length() - 1) == '/' || prefix.at(prefix.length() - 1) == '\\');
#else
    assert(prefix.at(prefix.length() - 1) == '/');
#endif
    KDE_struct_stat buff;

    if (path.contains('*') || path.contains('?')) {

	QRegExp pathExp(path, true, true);
	DIR *dp = opendir( QFile::encodeName(prefix) );
	if (!dp) {
	    return;
	}

	struct dirent *ep;

        QString _dot(".");
        QString _dotdot("..");

	while( ( ep = readdir( dp ) ) != 0L )
	    {
		QString fn( QFile::decodeName(ep->d_name));
		if (fn == _dot || fn == _dotdot || fn.at(fn.length() - 1) == '~')
		    continue;

		if ( !pathExp.exactMatch(fn) )
		    continue; // No match
		QString rfn = relPart+fn;
		fn = prefix + fn;
		if ( KDE_stat( QFile::encodeName(fn), &buff ) != 0 ) {
		    kdDebug() << "Error statting " << fn << " : " << perror << endl;
		    continue; // Couldn't stat (e.g. no permissions)
		}
		if ( S_ISDIR( buff.st_mode ))
		    lookupPrefix(fn + '/', rest, rfn + '/', regexp, list, relList, recursive, unique);
	    }

	closedir( dp );
    } else {
        // Don't stat, if the dir doesn't exist we will find out
        // when we try to open it.
        lookupPrefix(prefix + path + '/', rest,
                     relPart + path + '/', regexp, list,
                     relList, recursive, unique);
    }
}

QStringList
KStandardDirs::findAllResources( const char *type,
			         const QString& filter,
				 bool recursive,
			         bool unique,
                                 QStringList &relList) const
{
    QStringList list;
    QString filterPath;
    QString filterFile;

    if (filter.length())
    {
       int slash = filter.findRev('/');
       if (slash < 0)
	   filterFile = filter;
       else {
	   filterPath = filter.left(slash + 1);
	   filterFile = filter.mid(slash + 1);
       }
    }

    checkConfig();

    QStringList candidates;
	if (!QDir::isRelativePath(filter)) // absolute path
    {
#ifdef Q_OS_WIN
        candidates << filterPath.left(3); //e.g. "C:\"
        filterPath = filterPath.mid(3);
#else
        candidates << "/";
        filterPath = filterPath.mid(1);
#endif
    }
    else
    {
        if (d && d->restrictionsActive && (strcmp(type, "data")==0))
            applyDataRestrictions(filter);
        candidates = resourceDirs(type);
    }
    if (filterFile.isEmpty())
	filterFile = "*";

    QRegExp regExp(filterFile, true, true);

    for (QStringList::ConstIterator it = candidates.begin();
         it != candidates.end(); ++it)
    {
        lookupPrefix(*it, filterPath, "", regExp, list,
                     relList, recursive, unique);
    }

    return list;
}

QStringList
KStandardDirs::findAllResources( const char *type,
			         const QString& filter,
				 bool recursive,
			         bool unique) const
{
    QStringList relList;
    return findAllResources(type, filter, recursive, unique, relList);
}

QString
KStandardDirs::realPath(const QString &dirname)
{
    char realpath_buffer[MAXPATHLEN + 1];
    memset(realpath_buffer, 0, MAXPATHLEN + 1);

    /* If the path contains symlinks, get the real name */
    if (realpath( QFile::encodeName(dirname).data(), realpath_buffer) != 0) {
        // succes, use result from realpath
        int len = strlen(realpath_buffer);
        realpath_buffer[len] = '/';
        realpath_buffer[len+1] = 0;
        return QFile::decodeName(realpath_buffer);
    }

    return dirname;
}

QString
KStandardDirs::realFilePath(const QString &filename)
{
    char realpath_buffer[MAXPATHLEN + 1];
    memset(realpath_buffer, 0, MAXPATHLEN + 1);

    /* If the path contains symlinks, get the real name */
    if (realpath( QFile::encodeName(filename).data(), realpath_buffer) != 0) {
        // succes, use result from realpath
        return QFile::decodeName(realpath_buffer);
    }

    return filename;
}

void KStandardDirs::createSpecialResource(const char *type)
{
   char hostname[256];
   hostname[0] = 0;
   gethostname(hostname, 255);
   QString dir = QString("%1%2-%3").arg(localkdedir()).arg(type).arg(hostname);
   char link[1024];
   link[1023] = 0;
   int result = readlink(QFile::encodeName(dir).data(), link, 1023);
   bool relink = (result == -1) && (errno == ENOENT);
   if (result > 0)
   {
      link[result] = 0;
      if (!QDir::isRelativePath(link))
      {
         KDE_struct_stat stat_buf;
         int res = KDE_lstat(link, &stat_buf);
         if ((res == -1) && (errno == ENOENT))
         {
            relink = true;
         }
         else if ((res == -1) || (!S_ISDIR(stat_buf.st_mode)))
         {
            fprintf(stderr, "Error: \"%s\" is not a directory.\n", link);
            relink = true;
         }
         else if (stat_buf.st_uid != getuid())
         {
            fprintf(stderr, "Error: \"%s\" is owned by uid %d instead of uid %d.\n", link, stat_buf.st_uid, getuid());
            relink = true;
         }
      }
   }
#ifdef Q_WS_WIN
   if (relink)
   {
      if (!makeDir(dir, 0700))
         fprintf(stderr, "failed to create \"%s\"", dir.latin1());
      else
         result = readlink(QFile::encodeName(dir).data(), link, 1023);
   }
#else //UNIX
   if (relink)
   {
      QString srv = findExe(QString::fromLatin1("lnusertemp"), kfsstnd_defaultbindir());
      if (srv.isEmpty())
         srv = findExe(QString::fromLatin1("lnusertemp"));
      if (!srv.isEmpty())
      {
         system(QFile::encodeName(srv)+" "+type);
         result = readlink(QFile::encodeName(dir).data(), link, 1023);
      }
   }
   if (result > 0)
   {
      link[result] = 0;
      if (link[0] == '/')
         dir = QFile::decodeName(link);
      else
         dir = QDir::cleanDirPath(dir+QFile::decodeName(link));
   }
#endif
   addResourceDir(type, dir+'/');
}

QStringList KStandardDirs::resourceDirs(const char *type) const
{
    QStringList *candidates = dircache.find(type);

    if (!candidates) { // filling cache
        if (strcmp(type, "socket") == 0)
           const_cast<KStandardDirs *>(this)->createSpecialResource(type);
        else if (strcmp(type, "tmp") == 0)
           const_cast<KStandardDirs *>(this)->createSpecialResource(type);
        else if (strcmp(type, "cache") == 0)
           const_cast<KStandardDirs *>(this)->createSpecialResource(type);

        QDir testdir;

        candidates = new QStringList();
        QStringList *dirs;

        bool restrictionActive = false;
        if (d && d->restrictionsActive)
        {
           if (d->dataRestrictionActive)
              restrictionActive = true;
           else if (d->restrictions["all"])
              restrictionActive = true;
           else if (d->restrictions[type])
              restrictionActive = true;
           d->dataRestrictionActive = false; // Reset
        }

        dirs = relatives.find(type);
        if (dirs)
        {
            bool local = true;
            const QStringList *prefixList = 0;
            if (strncmp(type, "xdgdata-", 8) == 0)
                prefixList = &(d->xdgdata_prefixes);
            else if (strncmp(type, "xdgconf-", 8) == 0)
                prefixList = &(d->xdgconf_prefixes);
            else
                prefixList = &prefixes;

            for (QStringList::ConstIterator pit = prefixList->begin();
                 pit != prefixList->end();
                 ++pit)
            {
                for (QStringList::ConstIterator it = dirs->begin();
                     it != dirs->end(); ++it) {
                    QString path = realPath(*pit + *it);
                    testdir.setPath(path);
                    if (local && restrictionActive)
                       continue;
                    if ((local || testdir.exists()) && !candidates->contains(path))
                        candidates->append(path);
                }
                local = false;
            }
        }
        dirs = absolutes.find(type);
        if (dirs)
            for (QStringList::ConstIterator it = dirs->begin();
                 it != dirs->end(); ++it)
            {
                testdir.setPath(*it);
                if (testdir.exists())
                {
                    QString filename = realPath(*it);
                    if (!candidates->contains(filename))
                        candidates->append(filename);
                }
            }
        dircache.insert(type, candidates);
    }

#if 0
    kdDebug() << "found dirs for resource " << type << ":" << endl;
    for (QStringList::ConstIterator pit = candidates->begin();
	 pit != candidates->end();
	 pit++)
    {
	fprintf(stderr, "%s\n", (*pit).latin1());
    }
#endif


  return *candidates;
}

QStringList KStandardDirs::systemPaths( const QString& pstr )
{
    QStringList tokens;
    QString p = pstr;

    if( p.isNull() )
    {
	p = getenv( "PATH" );
    }

    QString delimiters(QChar(KPATH_SEPARATOR));
    delimiters += "\b";
    tokenize( tokens, p, delimiters );

    QStringList exePaths;

    // split path using : or \b as delimiters
    for( unsigned i = 0; i < tokens.count(); i++ )
    {
	p = tokens[ i ];

        if ( p[ 0 ] == '~' )
        {
            int len = p.find( '/' );
            if ( len == -1 )
                len = p.length();
            if ( len == 1 )
            {
                p.replace( 0, 1, QDir::homeDirPath() );
            }
            else
            {
                QString user = p.mid( 1, len - 1 );
                struct passwd *dir = getpwnam( user.local8Bit().data() );
                if ( dir && strlen( dir->pw_dir ) )
                    p.replace( 0, len, QString::fromLocal8Bit( dir->pw_dir ) );
            }
        }

	exePaths << p;
    }

    return exePaths;
}


QString KStandardDirs::findExe( const QString& appname,
				const QString& pstr, bool ignore)
{
#ifdef Q_WS_WIN
    QString real_appname = appname + ".exe";
#else
    QString real_appname = appname;
#endif
    QFileInfo info;

    // absolute path ?
    if (!QDir::isRelativePath(real_appname))
    {
        info.setFile( real_appname );
        if( info.exists() && ( ignore || info.isExecutable() )
            && info.isFile() ) {
            return real_appname;
        }
        return QString::null;
    }

    QString p = QString("%1/%2").arg(kfsstnd_defaultbindir()).arg(real_appname);
    info.setFile( p );
    if( info.exists() && ( ignore || info.isExecutable() )
         && ( info.isFile() || info.isSymLink() )  ) {
         return p;
    }

    QStringList exePaths = systemPaths( pstr );
    for (QStringList::ConstIterator it = exePaths.begin(); it != exePaths.end(); ++it)
    {
	p = (*it) + "/";
	p += real_appname;

	// Check for executable in this tokenized path
	info.setFile( p );

	if( info.exists() && ( ignore || info.isExecutable() )
           && ( info.isFile() || info.isSymLink() )  ) {
	    return p;
	}
    }

    // If we reach here, the executable wasn't found.
    // So return empty string.

    return QString::null;
}

int KStandardDirs::findAllExe( QStringList& list, const QString& appname,
			const QString& pstr, bool ignore )
{
#ifdef Q_WS_WIN
    QString real_appname = appname + ".exe";
#else
    QString real_appname = appname;
#endif
    QFileInfo info;
    QString p;
    list.clear();

    QStringList exePaths = systemPaths( pstr );
    for (QStringList::ConstIterator it = exePaths.begin(); it != exePaths.end(); ++it)
    {
	p = (*it) + "/";
	p += real_appname;

	info.setFile( p );

	if( info.exists() && (ignore || info.isExecutable())
	    && info.isFile() ) {
	    list.append( p );
	}
    }

    return list.count();
}

static int tokenize( QStringList& tokens, const QString& str,
		     const QString& delim )
{
    int len = str.length();
    QString token = "";

    for( int index = 0; index < len; index++)
    {
	if ( delim.find( str[ index ] ) >= 0 )
	{
	    tokens.append( token );
	    token = "";
	}
	else
	{
	    token += str[ index ];
	}
    }
    if ( token.length() > 0 )
    {
	tokens.append( token );
    }

    return tokens.count();
}

QString KStandardDirs::kde_default(const char *type) {
    if (!strcmp(type, "data"))
	return "share/apps/";
    if (!strcmp(type, "html"))
	return "share/doc/HTML/";
    if (!strcmp(type, "icon"))
	return "share/icons/";
    if (!strcmp(type, "config"))
	return "share/config/";
    if (!strcmp(type, "pixmap"))
	return "share/pixmaps/";
    if (!strcmp(type, "apps"))
	return "share/applnk/";
    if (!strcmp(type, "sound"))
	return "share/sounds/";
    if (!strcmp(type, "locale"))
	return "share/locale/";
    if (!strcmp(type, "services"))
	return "share/services/";
    if (!strcmp(type, "servicetypes"))
	return "share/servicetypes/";
    if (!strcmp(type, "mime"))
	return "share/mimelnk/";
    if (!strcmp(type, "cgi"))
	return "cgi-bin/";
    if (!strcmp(type, "wallpaper"))
	return "share/wallpapers/";
    if (!strcmp(type, "templates"))
	return "share/templates/";
    if (!strcmp(type, "exe"))
	return "bin/";
    if (!strcmp(type, "lib"))
	return "lib" KDELIBSUFF "/";
    if (!strcmp(type, "module"))
	return "lib" KDELIBSUFF "/kde3/";
    if (!strcmp(type, "qtplugins"))
        return "lib" KDELIBSUFF "/kde3/plugins";
    if (!strcmp(type, "xdgdata-apps"))
        return "applications/";
    if (!strcmp(type, "xdgdata-dirs"))
        return "desktop-directories/";
    if (!strcmp(type, "xdgconf-menu"))
        return "menus/";
    if (!strcmp(type, "kcfg"))
	return "share/config.kcfg";
    if (!strcmp(type, "emoticons"))
			return "share/emoticons";


    qFatal("unknown resource type %s", type);
    return QString::null;
}

QString KStandardDirs::saveLocation(const char *type,
				    const QString& suffix,
				    bool create) const
{
    checkConfig();

    QString *pPath = savelocations.find(type);
    if (!pPath)
    {
       QStringList *dirs = relatives.find(type);
       if (!dirs && (
                     (strcmp(type, "socket") == 0) ||
                     (strcmp(type, "tmp") == 0) ||
                     (strcmp(type, "cache") == 0) ))
       {
          (void) resourceDirs(type); // Generate socket|tmp|cache resource.
          dirs = relatives.find(type); // Search again.
       }
       if (dirs)
       {
          // Check for existence of typed directory + suffix
          if (strncmp(type, "xdgdata-", 8) == 0)
             pPath = new QString(realPath(localxdgdatadir() + dirs->last()));
          else if (strncmp(type, "xdgconf-", 8) == 0)
             pPath = new QString(realPath(localxdgconfdir() + dirs->last()));
          else
             pPath = new QString(realPath(localkdedir() + dirs->last()));
       }
       else {
          dirs = absolutes.find(type);
          if (!dirs)
             qFatal("KStandardDirs: The resource type %s is not registered", type);
          pPath = new QString(realPath(dirs->last()));
       }

       savelocations.insert(type, pPath);
    }
    QString fullPath = *pPath + (pPath->endsWith("/") ? "" : "/") + suffix;

    KDE_struct_stat st;
    if (KDE_stat(QFile::encodeName(fullPath), &st) != 0 || !(S_ISDIR(st.st_mode))) {
	if(!create) {
#ifndef NDEBUG
	    kdDebug() << QString("save location %1 doesn't exist").arg(fullPath) << endl;
#endif
	    return fullPath;
	}