C++ StringMap::clear方法代码示例

int Font::cacheAllFontNames()
{
	nameFileMap.clear();
	fileNameMap.clear();

	Array<String> fontFiles;
	Array<String> fontNames;
	enumFontFilesAndNames(Adder<Array<String>, String>(fontFiles), Adder<Array<String>, String>(fontNames));

	int count = fontFiles.getCount();
	BL_ASSERT(count == fontNames.getCount());
	for (int i = 0; i < count; ++i)
	{
		BaseLib::Console::trace << fontNames[i] << ": " << fontFiles[i] << BaseLib::Streams::newLine;
		nameFileMap[fontNames[i]] = fontFiles[i];
		fileNameMap[fontFiles[i]] = fontNames[i];
	}

	return count;
}

void Directory::getFileInfo(StringMap &map) const
{
	// Note: fileInfo must not contain path
	
	map.clear();
	map["name"] =  fileName();
	map["time"] << fileTime();
	
	if(fileIsDir()) map["type"] =  "directory";
	else {
		map["type"] =  "file";
		map["size"] << fileSize();
	}
}

 void findSubstringInChunk(string S, int startPos, int wordLength, int wordNum, StringMap &Lmap, vector<int> &result) {
     int start = startPos;
     int strLength = (int)S.length();
     StringMap candidate;
     int wordCount = 0;
     while (start + wordLength <= strLength) {
         //  we can safely try S[start...start + wordLength - 1]
         string word = S.substr(start, wordLength);
         //  compare word with every element in L
         auto findWord = Lmap.find(word);
         if (findWord == Lmap.end()) {
             candidate.clear();
             wordCount = 0;
         } else {
             //  insert this word into the candidate
             auto it = candidate.find(word);
             if (it == candidate.end()) {
                 candidate[word] = 1;
             } else {
                 candidate[word]++;
             }
             wordCount++;
             if (wordCount == wordNum) {
                 //  test whether candidate is the same as Lmap
                 if (compareStringMap(candidate, Lmap)) {
                     //  we have found one!
                     result.push_back(start - (wordNum - 1) * wordLength);
                 }
                 //  remove the first word in the candidate
                 word = S.substr(start - (wordNum - 1) * wordLength, wordLength);
                 candidate[word]--;
                 if (candidate[word] == 0) {
                     //  remove this item
                     candidate.erase(word);
                 }
                 wordCount--;
             }
         }
         start += wordLength;
     }
 }

 StringTable()
 {
   m_map.clear();
   m_vec.clear();
   m_invalid = "invalid-string";
 }

//.........这里部分代码省略.........
		}
		ScanFile(argv[i], ext, false, verbose);
	}

	/* Default output file is Makefile */
	if (filename == NULL) filename = strdup("Makefile");

	/* Default delimiter string */
	if (delimiter == NULL) delimiter = strdup("# DO NOT DELETE");

	char backup[PATH_MAX];
	strcpy(backup, filename);
	strcat(backup, ".bak");

	char *content = NULL;
	long size = 0;

	/* Read in the current file; so we can overwrite everything from the
	 * end of non-depend data marker down till the end. */
	FILE *src = fopen(filename, "rb");
	if (src != NULL) {
		fseek(src, 0, SEEK_END);
		size = ftell(src);
		rewind(src);
		content = (char*)malloc(size * sizeof(*content));
		if (fread(content, 1, size, src) != (size_t)size) {
			fprintf(stderr, "Could not read %s\n", filename);
			exit(-2);
		}
		fclose(src);
	}

	FILE *dst = fopen(filename, "w");
	bool found_delimiter = false;

	if (size != 0) {
		src = fopen(backup, "wb");
		if (fwrite(content, 1, size, src) != (size_t)size) {
			fprintf(stderr, "Could not write %s\n", filename);
			exit(-2);
		}
		fclose(src);

		/* Then append it to the real file. */
		src = fopen(backup, "rb");
		while (fgets(content, size, src) != NULL) {
			fputs(content, dst);
			if (!strncmp(content, delimiter, strlen(delimiter))) found_delimiter = true;
			if (!append && found_delimiter) break;
		}
		fclose(src);
	}
	if (!found_delimiter) fprintf(dst, "\n%s\n", delimiter);

	for (StringMap::iterator it = _files.begin(); it != _files.end(); it++) {
		for (StringSet::iterator h = it->second->begin(); h != it->second->end(); h++) {
			fprintf(dst, "%s: %s\n", it->first, *h);
		}
	}

	/* Clean up our mess. */
	fclose(dst);

	free(delimiter);
	free(filename);
	free(ext);
	free(content);

	for (StringMap::iterator it = _files.begin(); it != _files.end(); it++) {
		for (StringSet::iterator h = it->second->begin(); h != it->second->end(); h++) {
			free(*h);
		}
		it->second->clear();
		delete it->second;
		free(it->first);
	}
	_files.clear();

	for (StringMap::iterator it = _headers.begin(); it != _headers.end(); it++) {
		for (StringSet::iterator h = it->second->begin(); h != it->second->end(); h++) {
			free(*h);
		}
		it->second->clear();
		delete it->second;
		free(it->first);
	}
	_headers.clear();

	for (StringSet::iterator it = _defines.begin(); it != _defines.end(); it++) {
		free(*it);
	}
	_defines.clear();

	for (StringSet::iterator it = _include_dirs.begin(); it != _include_dirs.end(); it++) {
		free(*it);
	}
	_include_dirs.clear();

	return 0;
}

int main (int argc, char *argv[]) {
    if(argc < 2) {
        ERR("usage: \n" << argv[0] << " <file.osm/.osm.bz2/.osm.pbf> [<profile.lua>]");
    }

    /*** Setup Scripting Environment ***/
    ScriptingEnvironment scriptingEnvironment((argc > 2 ? argv[2] : "profile.lua"), argv[1]);

    unsigned numberOfThreads = omp_get_num_procs();
    if(testDataFile("extractor.ini")) {
        ExtractorConfiguration extractorConfig("extractor.ini");
        unsigned rawNumber = stringToInt(extractorConfig.GetParameter("Threads"));
        if( rawNumber != 0 && rawNumber <= numberOfThreads)
            numberOfThreads = rawNumber;
    }
    omp_set_num_threads(numberOfThreads);


    INFO("extracting data from input file " << argv[1]);
    bool isPBF(false);
    std::string outputFileName(argv[1]);
    std::string restrictionsFileName(argv[1]);
    std::string::size_type pos = outputFileName.find(".osm.bz2");
    if(pos==std::string::npos) {
        pos = outputFileName.find(".osm.pbf");
        if(pos!=std::string::npos) {
            isPBF = true;
        }
    }
    if(pos!=string::npos) {
        outputFileName.replace(pos, 8, ".osrm");
        restrictionsFileName.replace(pos, 8, ".osrm.restrictions");
    } else {
        pos=outputFileName.find(".osm");
        if(pos!=string::npos) {
            outputFileName.replace(pos, 5, ".osrm");
            restrictionsFileName.replace(pos, 5, ".osrm.restrictions");
        } else {
            outputFileName.append(".osrm");
            restrictionsFileName.append(".osrm.restrictions");
        }
    }

    unsigned amountOfRAM = 1;
    unsigned installedRAM = GetPhysicalmemory(); 
    if(installedRAM < 2048264) {
        WARN("Machine has less than 2GB RAM.");
    }
	
    StringMap stringMap;
    ExtractionContainers externalMemory;


    stringMap[""] = 0;
    extractCallBacks = new ExtractorCallbacks(&externalMemory, &stringMap);
    BaseParser<ExtractorCallbacks, _Node, _RawRestrictionContainer, _Way> * parser;
    if(isPBF) {
        parser = new PBFParser(argv[1]);
    } else {
        parser = new XMLParser(argv[1]);
    }
    parser->RegisterCallbacks(extractCallBacks);
    parser->RegisterScriptingEnvironment(scriptingEnvironment);

    if(!parser->Init())
        ERR("Parser not initialized!");
    double time = get_timestamp();
    parser->Parse();
    INFO("parsing finished after " << get_timestamp() - time << " seconds");

    externalMemory.PrepareData(outputFileName, restrictionsFileName, amountOfRAM, scriptingEnvironment.luaStateVector[0]);

    stringMap.clear();
    delete parser;
    delete extractCallBacks;
    INFO("finished");
    std::cout << "\nRun:\n"
                   "./osrm-prepare " << outputFileName << " " << restrictionsFileName << std::endl;
    return 0;
}

//.........这里部分代码省略.........
    ];

    if(0 != luaL_dostring(
      myLuaState,
      "print('Initializing LUA engine')\n"
    )) {
        ERR(lua_tostring(myLuaState,-1)<< " occured in scripting block");
    }

    luabind::module(myLuaState) [
      luabind::class_<HashTable<std::string, std::string> >("keyVals")
      .def("Add", &HashTable<std::string, std::string>::Add)
      .def("Find", &HashTable<std::string, std::string>::Find)
    ];

    luabind::module(myLuaState) [
      luabind::class_<ImportNode>("Node")
          .def(luabind::constructor<>())
          .def_readwrite("lat", &ImportNode::lat)
          .def_readwrite("lon", &ImportNode::lon)
          .def_readwrite("id", &ImportNode::id)
          .def_readwrite("bollard", &ImportNode::bollard)
          .def_readwrite("traffic_light", &ImportNode::trafficLight)
          .def_readwrite("tags", &ImportNode::keyVals)
    ];

    luabind::module(myLuaState) [
      luabind::class_<_Way>("Way")
          .def(luabind::constructor<>())
          .def_readwrite("name", &_Way::name)
          .def_readwrite("speed", &_Way::speed)
          .def_readwrite("type", &_Way::type)
          .def_readwrite("access", &_Way::access)
          .def_readwrite("roundabout", &_Way::roundabout)
          .def_readwrite("is_duration_set", &_Way::isDurationSet)
          .def_readwrite("is_access_restricted", &_Way::isAccessRestricted)
          .def_readwrite("ignore_in_grid", &_Way::ignoreInGrid)
          .def_readwrite("tags", &_Way::keyVals)
          .def_readwrite("direction", &_Way::direction)
          .enum_("constants")
          [
           luabind::value("notSure", 0),
           luabind::value("oneway", 1),
           luabind::value("bidirectional", 2),
           luabind::value("opposite", 3)
          ]
    ];
    // Now call our function in a lua script
	INFO("Parsing speedprofile from " << (argc > 2 ? argv[2] : "profile.lua") );
    if(0 != luaL_dofile(myLuaState, (argc > 2 ? argv[2] : "profile.lua") )) {
        ERR(lua_tostring(myLuaState,-1)<< " occured in scripting block");
    }

    //open utility libraries string library;
    luaL_openlibs(myLuaState);

    /*** End of Scripting Environment Setup; ***/

    unsigned amountOfRAM = 1;
    unsigned installedRAM = GetPhysicalmemory(); 
    if(installedRAM < 2048264) {
        WARN("Machine has less than 2GB RAM.");
    }
/*    if(testDataFile("extractor.ini")) {
        ExtractorConfiguration extractorConfig("extractor.ini");
        unsigned memoryAmountFromFile = atoi(extractorConfig.GetParameter("Memory").c_str());
        if( memoryAmountFromFile != 0 && memoryAmountFromFile <= installedRAM/(1024*1024))
            amountOfRAM = memoryAmountFromFile;
        INFO("Using " << amountOfRAM << " GB of RAM for buffers");
    }
	*/
	
    StringMap stringMap;
    ExtractionContainers externalMemory;

    stringMap[""] = 0;
    extractCallBacks = new ExtractorCallbacks(&externalMemory, &stringMap);
    BaseParser<_Node, _RawRestrictionContainer, _Way> * parser;
    if(isPBF) {
        parser = new PBFParser(argv[1]);
    } else {
        parser = new XMLParser(argv[1]);
    }
    parser->RegisterCallbacks(&nodeFunction, &restrictionFunction, &wayFunction);
    parser->RegisterLUAState(myLuaState);

    if(!parser->Init())
        INFO("Parser not initialized!");
    parser->Parse();

    externalMemory.PrepareData(outputFileName, restrictionsFileName, amountOfRAM);

    stringMap.clear();
    delete parser;
    delete extractCallBacks;
    INFO("[extractor] finished.");
    std::cout << "\nRun:\n"
                   "./osrm-prepare " << outputFileName << " " << restrictionsFileName << std::endl;
    return 0;
}

void SymbolType::deleteAll(){
    WriteLock l=WL(Types::tSymbol);
    locations.clear();
    strings.clear();
}