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/* Copyright (C) 2013 BMW Group
* Author: Manfred Bathelt (manfred.bathelt@bmw.de)
* Author: Juergen Gehring (juergen.gehring@bmw.de)
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <fstream>
#include "Configuration.h"
#include "utils.h"
namespace CommonAPI {
std::unordered_map<std::string, std::string> knownMiddlewareAliases_;
std::unordered_map<std::string, std::string> knownMiddlewarePaths_;
std::unordered_map<std::string, std::vector<std::string> > knownGeneratedPaths_;
std::vector<std::string> librarySearchPaths_;
std::string defaultBindingIdentifier_ = "";
const Configuration& Configuration::getInstance() {
static Configuration* instance = NULL;
if (!instance) {
instance = new Configuration();
instance->retrieveCommonApiConfiguration();
}
return *instance;
}
const std::vector<std::string>& Configuration::getLibrarySearchPaths() const {
return librarySearchPaths_;
}
const std::string& Configuration::getMiddlewareNameForAlias(const std::string& alias) const {
auto foundMiddlewareName = knownMiddlewareAliases_.find(alias);
if (foundMiddlewareName != knownMiddlewareAliases_.end()) {
return foundMiddlewareName->second;
} else {
return alias;
}
}
const std::string& Configuration::getMiddlewareLibraryPath(const std::string& middlewareIdentifier) const {
auto foundMiddlewarePath = knownMiddlewarePaths_.find(middlewareIdentifier);
if (foundMiddlewarePath == knownMiddlewarePaths_.end()) {
static const std::string emptyReturn = "";
return emptyReturn;
}
return foundMiddlewarePath->second;
}
const std::vector<std::string>& Configuration::getGenericLibraryPaths(const std::string& middlewareIdentifier) const {
const auto& generatedPathsForMiddleware = knownGeneratedPaths_.find(middlewareIdentifier);
if (generatedPathsForMiddleware != knownGeneratedPaths_.end()) {
return generatedPathsForMiddleware->second;
}
static const std::vector<std::string> emptyReturn;
return emptyReturn;
}
const std::string& Configuration::getDefaultMiddlewareIdentifier() const {
return defaultBindingIdentifier_;
}
void Configuration::readConfigFile(std::ifstream& addressConfigFile) {
std::string currentlyParsedBindingIdentifier = "";
bool endFile = false;
std::string readLine;
while (addressConfigFile.good()) {
getline(addressConfigFile, readLine);
const size_t readLineLength = readLine.length();
if (strncmp(readLine.c_str(), CATEGORY_IDENTIFIER_BINDING, strlen(CATEGORY_IDENTIFIER_BINDING)) == 0
&& readLine[readLineLength - 1] == CATEGORY_ENDING) {
std::string newBindingIdentifier = readLine.substr(
strlen(CATEGORY_IDENTIFIER_BINDING),
readLineLength - (strlen(CATEGORY_IDENTIFIER_BINDING) + 1));
trim(newBindingIdentifier);
if (containsOnlyAlphanumericCharacters(newBindingIdentifier)) {
currentlyParsedBindingIdentifier = newBindingIdentifier;
}
} else if (currentlyParsedBindingIdentifier != "") {
std::vector<std::string> parameterElements = split(readLine, '=');
if (parameterElements.size() == 2) {
if (parameterElements.at(0) == BINDING_PARAMETER_ALIAS) {
std::vector<std::string> aliases = split(parameterElements.at(1), ':');
for (const std::string& singleAlias: aliases) {
knownMiddlewareAliases_.insert( {singleAlias, currentlyParsedBindingIdentifier});
}
} else if (parameterElements.at(0) == BINDING_PARAMETER_LIBPATH) {
knownMiddlewarePaths_.insert( {currentlyParsedBindingIdentifier, parameterElements.at(1)});
} else if (parameterElements.at(0) == BINDING_PARAMETER_GENPATH) {
std::vector<std::string> paths = split(parameterElements.at(1), ':');
auto alreadyKnownPaths = knownGeneratedPaths_.find(currentlyParsedBindingIdentifier);
if (alreadyKnownPaths == knownGeneratedPaths_.end()) {
const std::vector<std::string> pathSet(paths.begin(), paths.end());
knownGeneratedPaths_.insert( {currentlyParsedBindingIdentifier, std::move(pathSet)} );
} else {
alreadyKnownPaths->second.insert(alreadyKnownPaths->second.end(), paths.begin(), paths.end());
}
}
} else if (parameterElements.size() == 1) {
if (parameterElements.at(0) == BINDING_PARAMETER_DEFAULT && defaultBindingIdentifier_ == "") {
defaultBindingIdentifier_ = currentlyParsedBindingIdentifier;
}
}
}
}
}
void Configuration::readEnvironmentVariables() {
librarySearchPaths_ = split(COMMONAPI_STD_LIB_PATH, ':');
bool errorOccured = false;
#ifdef WIN32
char* environmentBindingPath;
size_t len;
errno_t err = _dupenv_s(&environmentBindingPath, &len, COMMONAPI_ENVIRONMENT_BINDING_PATH);
if (err != 0 || environmentBindingPath == NULL) {
errorOccured = true;
}
#else
const char* environmentBindingPath = getenv(COMMONAPI_ENVIRONMENT_BINDING_PATH);
if (!environmentBindingPath) {
errorOccured = true;
}
#endif
if (!errorOccured) {
std::vector<std::string> environmentPaths = split(environmentBindingPath, ':');
librarySearchPaths_.insert(librarySearchPaths_.begin(), environmentPaths.begin(), environmentPaths.end());
}
}
void Configuration::retrieveCommonApiConfiguration() {
readEnvironmentVariables();
std::string fqnOfConfigFile = getCurrentBinaryFileFQN();
fqnOfConfigFile += COMMONAPI_CONFIG_SUFFIX;
std::ifstream commonapiConfigFile;
commonapiConfigFile.open(fqnOfConfigFile.c_str());
if (commonapiConfigFile.is_open()) {
readConfigFile(commonapiConfigFile);
commonapiConfigFile.close();
}
commonapiConfigFile.clear();
std::vector<std::string> splittedConfigFQN = split(fqnOfConfigFile, '/');
std::string globalConfigFQN = COMMONAPI_GLOBAL_CONFIG_ROOT + splittedConfigFQN.at(splittedConfigFQN.size() - 1);
commonapiConfigFile.open(globalConfigFQN);
if (commonapiConfigFile.is_open()) {
readConfigFile(commonapiConfigFile);
commonapiConfigFile.close();
}
commonapiConfigFile.clear();
commonapiConfigFile.open(COMMONAPI_GLOBAL_CONFIG_FQN);
if (commonapiConfigFile.is_open()) {
readConfigFile(commonapiConfigFile);
commonapiConfigFile.close();
}
}
} // namespace CommonAPI
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