Skip to content
Snippets Groups Projects
  • Gemma Guest's avatar
    fc98aee9
    Re #19773 Avoid hidden copy constructor · fc98aee9
    Gemma Guest authored
    This commit adds a copy constructor that takes a non-const argument.
    This is required because otherwise the templated constructor would take
    precedence over the copy constructor when supplied with a non-const argument.
    
    Currently the templated constructor is functionally the same as the new copy
    constructor. However, adding the new copy constructor avoids ambiguity, and
    means we can add some safety by casting the argument to const before passing
    it to the base class constructor.
    fc98aee9
    History
    Re #19773 Avoid hidden copy constructor
    Gemma Guest authored
    This commit adds a copy constructor that takes a non-const argument.
    This is required because otherwise the templated constructor would take
    precedence over the copy constructor when supplied with a non-const argument.
    
    Currently the templated constructor is functionally the same as the new copy
    constructor. However, adding the new copy constructor avoids ambiguity, and
    means we can add some safety by casting the argument to const before passing
    it to the base class constructor.
Code owners
Assign users and groups as approvers for specific file changes. Learn more.
ConfigService.cpp 69.28 KiB
//----------------------------------------------------------------------
// Includes
//----------------------------------------------------------------------

#include "MantidKernel/ConfigService.h"
#include "MantidKernel/DateAndTime.h"
#include "MantidKernel/MantidVersion.h"
#include "MantidKernel/Strings.h"
#include "MantidKernel/Logger.h"
#include "MantidKernel/FilterChannel.h"
#include "MantidKernel/StdoutChannel.h"
#include "MantidKernel/Exception.h"
#include "MantidKernel/FacilityInfo.h"
#include "MantidKernel/NetworkProxy.h"

#include <Poco/Util/LoggingConfigurator.h>
#include <Poco/Util/SystemConfiguration.h>
#include <Poco/Util/PropertyFileConfiguration.h>
#include <Poco/LoggingFactory.h>
#include <Poco/Path.h>
#include <Poco/File.h>
#include <MantidKernel/StringTokenizer.h>
#include <Poco/DOM/DOMParser.h>
#include <Poco/DOM/Document.h>
#include <Poco/DOM/NodeList.h>
#include <Poco/Environment.h>
#include <Poco/Process.h>
#include <Poco/URI.h>
#ifdef _WIN32
#pragma warning(disable : 4250)
#endif
#include <Poco/Logger.h>
#include <Poco/SplitterChannel.h>
#include <Poco/LoggingRegistry.h>
#include <Poco/PipeStream.h>
#include <Poco/StreamCopier.h>

#include <boost/algorithm/string/join.hpp>
#include <boost/regex.hpp>

#include <fstream>

#ifdef __APPLE__
#include <mach-o/dyld.h>
#endif

namespace Mantid {
/**
 * Get the welcome message for Mantid.
 * @returns A string containing the welcome message for Mantid.
 */
std::string welcomeMessage() {
  return "Welcome to Mantid " +
         std::string(Mantid::Kernel::MantidVersion::version()) +
         "\nPlease cite: " + Mantid::Kernel::MantidVersion::paperCitation() +
         " and this release: " + Mantid::Kernel::MantidVersion::doi();
}

namespace Kernel {

namespace { // anonymous namespace for some utility functions

/// static Logger object
Logger g_log("ConfigService");

/**
 * Split the supplied string on semicolons.
 *
 * @param path The path to split.
 * @returns vector containing the splitted path.
 */
std::vector<std::string> splitPath(const std::string &path) {
  std::vector<std::string> splitted;

  if (path.find(';') == std::string::npos) { // don't bother tokenizing
    splitted.push_back(path);
  } else {
    int options = Mantid::Kernel::StringTokenizer::TOK_TRIM +
                  Mantid::Kernel::StringTokenizer::TOK_IGNORE_EMPTY;
    Mantid::Kernel::StringTokenizer tokenizer(path, ";,", options);
    auto iend = tokenizer.end();
    for (auto itr = tokenizer.begin(); itr != iend; ++itr) {
      if (!itr->empty()) {
        splitted.push_back(*itr);
      }
    }
  }
  return splitted;
}

} // end of anonymous namespace

/** Inner templated class to wrap the poco library objects that have protected
 *  destructors and expose them as public.
 */
template <typename T> class ConfigServiceImpl::WrappedObject : public T {
public:
  /// The template type of class that is being wrapped
  typedef T element_type;
  /// Simple constructor
  WrappedObject() : T() { m_pPtr = static_cast<T *>(this); }

  /** Constructor with a class to wrap
   *  @param F :: The object to wrap
   */
  template <typename Field> explicit WrappedObject(Field &F) : T(F) {
    m_pPtr = static_cast<T *>(this);
  }

  /// Copy constructor
  WrappedObject(const WrappedObject<T> &A) : T(A) {
    m_pPtr = static_cast<T *>(this);
  }

  /// Copy constructor taking a non-const argument. This avoids the copy
  /// constructor being hidden by the templated constructor above (which would
  /// take precedence over the copy constructor otherwise if supplied with a
  /// non-const WrappedObject). It's not ideal having a non-const input
  /// argument here, but at least we can cast it to const for the base class.
  WrappedObject(WrappedObject<T> &A)
      : T(std::const_cast<const WrappedObject<T> &>(A)) {
    m_pPtr = static_cast<T *>(this);
  }

  /// Overloaded = operator sets the pointer to the wrapped class
  /// and copies over the contents
  WrappedObject<T> &operator=(const WrappedObject<T> &rhs) {
    if (this != &rhs) {
      m_pPtr = static_cast<T *>(this);
      *m_pPtr = rhs;
    }
    return *this;
  }
  /// Overloaded * operator returns the wrapped object pointer
  const T &operator*() const { return *m_pPtr; }
  /// Overloaded * operator returns the wrapped object pointer
  T &operator*() { return m_pPtr; }
  /// Overloaded -> operator returns the wrapped object pointer
  const T *operator->() const { return m_pPtr; }
  /// Overloaded -> operator returns the wrapped object pointer
  T *operator->() { return m_pPtr; }

private:
  /// Private pointer to the wrapped class
  T *m_pPtr;
};

// Back to the ConfigService class itself...

//-------------------------------
// Private member functions
//-------------------------------

/// Private constructor for singleton class
ConfigServiceImpl::ConfigServiceImpl()
    : m_pConf(nullptr), m_pSysConfig(nullptr), m_changed_keys(),
      m_ConfigPaths(), m_AbsolutePaths(), m_strBaseDir(""),
      m_PropertyString(""), m_properties_file_name("Mantid.properties"),
#ifdef MPI_BUILD
      // Use a different user properties file for an mpi-enabled build to avoid
      // confusion if both are used on the same file system
      m_user_properties_file_name("Mantid-mpi.user.properties"),
#else
      m_user_properties_file_name("Mantid.user.properties"),
#endif
      m_DataSearchDirs(), m_UserSearchDirs(), m_InstrumentDirs(),
      m_instr_prefixes(), m_proxyInfo(), m_isProxySet(false),
      m_filterChannels() {
  // getting at system details
  m_pSysConfig = new WrappedObject<Poco::Util::SystemConfiguration>;
  m_pConf = nullptr;

  // Register the FilterChannel with the Poco logging factory
  Poco::LoggingFactory::defaultFactory().registerChannelClass(
      "FilterChannel",
      new Poco::Instantiator<Poco::FilterChannel, Poco::Channel>);
  // Register StdChannel with Poco
  Poco::LoggingFactory::defaultFactory().registerChannelClass(
      "StdoutChannel",
      new Poco::Instantiator<Poco::StdoutChannel, Poco::Channel>);

  setBaseDirectory();

  // Fill the list of possible relative path keys that may require conversion to
  // absolute paths
  m_ConfigPaths.emplace("mantidqt.python_interfaces_directory", true);
  m_ConfigPaths.emplace("plugins.directory", true);
  m_ConfigPaths.emplace("pvplugins.directory", true);
  m_ConfigPaths.emplace("mantidqt.plugins.directory", true);
  m_ConfigPaths.emplace("instrumentDefinition.directory", true);
  m_ConfigPaths.emplace("instrumentDefinition.vtpDirectory", true);
  m_ConfigPaths.emplace("groupingFiles.directory", true);
  m_ConfigPaths.emplace("maskFiles.directory", true);
  m_ConfigPaths.emplace("colormaps.directory", true);
  m_ConfigPaths.emplace("requiredpythonscript.directories", true);
  m_ConfigPaths.emplace("pythonscripts.directory", true);
  m_ConfigPaths.emplace("pythonscripts.directories", true);
  m_ConfigPaths.emplace("python.plugins.directories", true);
  m_ConfigPaths.emplace("user.python.plugins.directories", true);
  m_ConfigPaths.emplace("datasearch.directories", true);
  m_ConfigPaths.emplace("icatDownload.directory", true);

  // attempt to load the default properties file that resides in the directory
  // of the executable
  std::string propertiesFilesList;
  updateConfig(getPropertiesDir() + m_properties_file_name, false, false);
  propertiesFilesList = getPropertiesDir() + m_properties_file_name;

  // Load the local (machine) properties file, if it exists
  Poco::File localFile(getLocalFilename());
  if (localFile.exists()) {
    updateConfig(getLocalFilename(), true, false);
    propertiesFilesList += ", " + getLocalFilename();
  }

  if (Poco::Environment::has("MANTIDPROPERTIES")) {
    // and then append the user properties
    updateConfig(getUserFilename(), true, false);
    propertiesFilesList += ", " + getUserFilename();
    // and the extra one from the environment
    updateConfig(Poco::Environment::get("MANTIDPROPERTIES"), true, true);
    propertiesFilesList += ", " + Poco::Environment::get("MANTIDPROPERTIES");
  } else {
    // Just do the user properties
    updateConfig(getUserFilename(), true, true);
    propertiesFilesList += ", " + getUserFilename();
  }

  updateFacilities();

  g_log.debug() << "ConfigService created.\n";
  g_log.debug() << "Configured Mantid.properties directory of application as "
                << getPropertiesDir() << '\n';
  g_log.information() << "This is Mantid version " << MantidVersion::version()
                      << " revision " << MantidVersion::revision() << '\n';
  g_log.information() << "running on " << getComputerName() << " starting "
                      << DateAndTime::getCurrentTime().toFormattedString(
                             "%Y-%m-%dT%H:%MZ") << "\n";
  g_log.information() << "Properties file(s) loaded: " << propertiesFilesList
                      << '\n';
#ifndef MPI_BUILD // There is no logging to file by default in MPI build
  g_log.information() << "Logging to: " << m_logFilePath << '\n';
#endif

  // Assert that the appdata and the instrument subdirectory exists
  std::string appDataDir = getAppDataDir();
  Poco::Path path(appDataDir);
  path.pushDirectory("instrument");
  Poco::File file(path);
  // createDirectories will fail gracefully if it is already present - but will
  // throw an error if it cannot create the directory
  try {
    file.createDirectories();
  } catch (Poco::FileException &fe) {
    g_log.error()
        << "Cannot create the local instrument cache directory ["
        << path.toString()
        << "]. Mantid will not be able to update instrument definitions.\n"
        << fe.what() << '\n';
  }
  Poco::File vtpDir(getVTPFileDirectory());
  try {
    vtpDir.createDirectories();
  } catch (Poco::FileException &fe) {
    g_log.error()
        << "Cannot create the local instrument geometry cache directory ["
        << path.toString()
        << "]. Mantid will be slower at viewing complex instruments.\n"
        << fe.what() << '\n';
  }
  // must update the cache of instrument paths
  cacheInstrumentPaths();
}

/** Private Destructor
 *  Prevents client from calling 'delete' on the pointer handed out by Instance
 */
ConfigServiceImpl::~ConfigServiceImpl() {
  // std::cerr << "ConfigService destroyed.\n";
  Kernel::Logger::shutdown();
  delete m_pSysConfig;
  delete m_pConf; // potential double delete???
  clearFacilities();
}

/**
 * Set the base directory path so we can file the Mantid.properties file.
 *
 * This will search for the base directory that contains the .properties file
 * by checking the following places:
 *  - The current working directory
 *  - The executable directory
 *  - The directory defined by the MANTIDPATH enviroment var
 *  - OSX only: the directory two directories up from the executable (which
 *    is the base on the OSX package.
 *
 */
void ConfigServiceImpl::setBaseDirectory() {
  // Define the directory to search for the Mantid.properties file.
  Poco::File f;

  // First directory: the current working
  m_strBaseDir = Poco::Path::current();
  f = Poco::File(m_strBaseDir + m_properties_file_name);
  if (f.exists())
    return;

  // Check the executable directory to see if it includes a mantid.properties
  // file
  m_strBaseDir = getDirectoryOfExecutable();
  f = Poco::File(m_strBaseDir + m_properties_file_name);
  if (f.exists())
    return;

  // Check the MANTIDPATH environment var
  if (Poco::Environment::has("MANTIDPATH")) {
    // Here we have to follow the convention of the rest of this code and
    // add a trailing slash.
    // Note: adding it to the MANTIDPATH itself will make other parts of the
    // code crash.
    m_strBaseDir = Poco::Environment::get("MANTIDPATH") + "/";
    f = Poco::File(m_strBaseDir + m_properties_file_name);
    if (f.exists())
      return;
  }

#ifdef __APPLE__
  // Finally, on OSX check if we're in the package directory and the .properties
  // file just happens to be two directories up
  auto path = Poco::Path(getDirectoryOfExecutable());
  m_strBaseDir = path.parent().parent().parent().toString();
#endif
}

/** Loads the config file provided.
 *  If the file contains logging setup instructions then these will be used to
 *setup the logging framework.
 *
 *  @param filename :: The filename and optionally path of the file to load
 *  @param append :: If false (default) then any previous configuration is
 *discarded, otherwise the new keys are added, and repeated keys will override
 *existing ones.
 */
void ConfigServiceImpl::loadConfig(const std::string &filename,
                                   const bool append) {
  delete m_pConf;
  if (!append) {
    // remove the previous property string
    m_PropertyString = "";
    m_changed_keys.clear();
  }

  try {
    // slurp in entire file
    std::string temp;
    bool good = readFile(filename, temp);

    // check if we have failed to open the file
    if ((!good) || (temp == "")) {
      if (filename == getUserPropertiesDir() + m_user_properties_file_name) {
        // write out a fresh file
        createUserPropertiesFile();
      } else {
        throw Exception::FileError("Cannot open file", filename);
      }
    }

    // store the property string
    if ((append) && (m_PropertyString != "")) {
      m_PropertyString = m_PropertyString + "\n" + temp;
    } else {
      m_PropertyString = temp;
    }
  } catch (std::exception &e) {
    // there was a problem loading the file - it probably is not there
    std::cerr << "Problem loading the configuration file " << filename << " "
              << e.what() << '\n';
    if (!append) {
      // if we have no property values then take the default
      m_PropertyString = defaultConfig();
    }
  }

  // use the cached property string to initialise the POCO property file
  std::istringstream istr(m_PropertyString);
  m_pConf = new WrappedObject<Poco::Util::PropertyFileConfiguration>(istr);
}

/**
 * Read a file and place its contents into the given string
 * @param filename :: The filename of the file to read
 * @param contents :: The file contents will be placed here
 * @returns A boolean indicating whether opening the file was successful
 */
bool ConfigServiceImpl::readFile(const std::string &filename,
                                 std::string &contents) const {
  std::ifstream propFile(filename.c_str(), std::ios::in);
  bool good = propFile.good();
  if (!good) {
    contents = "";
    propFile.close();
    return good;
  }

  // slurp in entire file - extremely unlikely delimiter used as an alternate to
  // \n
  contents.clear();
  getline(propFile, contents, '`');
  propFile.close();
  return good;
}

/** Registers additional logging filter channels
* @param filterChannelName The name to refer to the filter channel, this should
* be unique
* @param pChannel a pointer to the channel to be registered, if blank, then the
* channel must already be registered with the logging registry in Poco
*/
void ConfigServiceImpl::registerLoggingFilterChannel(
    const std::string &filterChannelName, Poco::Channel *pChannel) {
  m_filterChannels.push_back(filterChannelName);
  if (pChannel) {
    Poco::LoggingRegistry::defaultRegistry().registerChannel(filterChannelName,
                                                             pChannel);
  }
}

/** Configures the Poco logging and starts it up
 *
 */
void ConfigServiceImpl::configureLogging() {
  // Undocumented way to override the mantid.log path
  if (Poco::Environment::has("MANTIDLOGPATH")) {
    auto logpath = Poco::Path(Poco::Environment::get("MANTIDLOGPATH"));
    logpath = logpath.absolute();
    m_logFilePath = logpath.toString();
    // Set the line in the configuration properties.
    m_pConf->setString("logging.channels.fileChannel.path", m_logFilePath);
  } else {
    m_logFilePath = getString("logging.channels.fileChannel.path");
    if (m_logFilePath.empty()) {
      // Default to appdata/mantid.log
      Poco::Path path(getAppDataDir());
      path.append("mantid.log");
      m_logFilePath = path.toString();
      // Set the line in the configuration properties.
      m_pConf->setString("logging.channels.fileChannel.path", m_logFilePath);
    }
  }

  try {
    // Configure the logging framework
    Poco::Util::LoggingConfigurator configurator;
    configurator.configure(m_pConf);
  } catch (std::exception &e) {
    std::cerr << "Trouble configuring the logging framework " << e.what()
              << '\n';
  }
  // register the filter channels - the order here is important
  registerLoggingFilterChannel("fileFilterChannel", nullptr);
  registerLoggingFilterChannel("consoleFilterChannel", nullptr);
}

/**
 * Searches the stored list for keys that have been loaded from the config file
 * and may contain
 * relative paths. Any it find are converted to absolute paths and stored
 * separately
 */
void ConfigServiceImpl::convertRelativeToAbsolute() {
  if (m_ConfigPaths.empty())
    return;

  m_AbsolutePaths.clear();
  std::map<std::string, bool>::const_iterator send = m_ConfigPaths.end();
  for (std::map<std::string, bool>::const_iterator sitr = m_ConfigPaths.begin();
       sitr != send; ++sitr) {
    std::string key = sitr->first;
    if (!m_pConf->hasProperty(key))
      continue;

    std::string value(m_pConf->getString(key));
    value = makeAbsolute(value, key);
    m_AbsolutePaths.emplace(key, value);
  }
}

/**
 * Make a relative path or a list of relative paths into an absolute one.
 * @param dir :: The directory to convert
 * @param key :: The key variable this relates to
 * @returns A string containing an absolute path by resolving the relative
 * directory with the executable directory
 */
std::string ConfigServiceImpl::makeAbsolute(const std::string &dir,
                                            const std::string &key) const {
  if (dir.empty()) {
    // Don't do anything for an empty value
    return dir;
  }
  std::string converted;
  // If we have a list, chop it up and convert each one
  if (dir.find_first_of(";,") != std::string::npos) {
    auto splitted = splitPath(dir);
    auto iend = splitted.cend();
    for (auto itr = splitted.begin(); itr != iend;) {
      std::string absolute = makeAbsolute(*itr, key);
      if (absolute.empty()) {
        ++itr;
      } else {
        converted += absolute;
        if (++itr != iend) {
          converted += ";";
        }
      }
    }
    return converted;
  }

  // MG 05/10/09: When the Poco::FilePropertyConfiguration object reads its
  // key/value pairs it
  // treats a backslash as the start of an escape sequence. If the next
  // character does not
  // form a valid sequence then the backslash is removed from the stream. This
  // has the effect
  // of giving malformed paths when using Windows-style directories. E.g
  // C:\Mantid ->C:Mantid
  // and Poco::Path::isRelative throws an exception on this
  bool is_relative(false);
  try {
    is_relative = Poco::Path(dir).isRelative();
  } catch (Poco::PathSyntaxException &) {
    g_log.warning() << "Malformed path detected in the \"" << key
                    << "\" variable, skipping \"" << dir << "\"\n";
    return "";
  }
  if (is_relative) {
    const std::string propFileDir(getPropertiesDir());
    converted = Poco::Path(propFileDir).resolve(dir).toString();
  } else {
    converted = dir;
  }
  converted = Poco::Path(converted).makeDirectory().toString();

  // C++ doesn't have a const version of operator[] for maps so I can't call
  // that here
  auto it = m_ConfigPaths.find(key);
  bool required = false;
  if (it != m_ConfigPaths.end()) {
    required = it->second;
  }
  try {
    if (required && !Poco::File(converted).exists()) {
      g_log.debug() << "Required properties path \"" << converted
                    << "\" in the \"" << key << "\" variable does not exist.\n";
      converted = "";
    }
  } catch (Poco::FileException &) {
    g_log.debug() << "Required properties path \"" << converted
                  << "\" in the \"" << key << "\" variable does not exist.\n";
    converted = "";
  }

  // Backward slashes cannot be allowed to go into our properties file
  // Note this is a temporary fix for ticket #2445.
  // Ticket #2460 prompts a review of our path handling in the config service.
  boost::replace_all(converted, "\\", "/");
  return converted;
}

/**
 * Create the store of data search paths from the 'datasearch.directories' key
 * within the Mantid.properties file.
 * The value of the key should be a semi-colon separated list of directories
 */
void ConfigServiceImpl::cacheDataSearchPaths() {
  std::string paths = getString("datasearch.directories");
  if (paths.empty()) {
    m_DataSearchDirs.clear();
  } else {
    m_DataSearchDirs = splitPath(paths);
  }
}

/**
 * Create the store of user search paths from the 'usersearch.directories' key
 * within the Mantid.properties file.
 * The value of the key should be a semi-colon separated list of directories
 */
void ConfigServiceImpl::cacheUserSearchPaths() {
  m_UserSearchDirs.clear();
  std::string paths = getString("usersearch.directories");
  if (paths.empty()) {
    m_UserSearchDirs.clear();
  } else {
    m_UserSearchDirs = splitPath(paths);
  }
}

/**
 *  The path that is passed should be as returned by makeAbsolute() and
 *  this function will return true if that path is in the list
 *  @param path :: the absolute path name to search for
 *  @return true if the path was found
 */
bool ConfigServiceImpl::isInDataSearchList(const std::string &path) const {
  // the path produced by poco will have \ on windows, but the searchdirs will
  // always have /
  std::string correctedPath = path;
  replace(correctedPath.begin(), correctedPath.end(), '\\', '/');

  auto it =
      std::find_if(m_DataSearchDirs.cbegin(), m_DataSearchDirs.cend(),
                   std::bind2nd(std::equal_to<std::string>(), correctedPath));
  return (it != m_DataSearchDirs.end());
}

/**
 * writes a basic placeholder user.properties file to disk
 * any errors are caught and logged, but not propagated
 */
void ConfigServiceImpl::createUserPropertiesFile() const {
  try {
    std::fstream filestr(
        (getUserPropertiesDir() + m_user_properties_file_name).c_str(),
        std::fstream::out);

    filestr << "# This file can be used to override any properties for this "
               "installation.\n";
    filestr << "# Any properties found in this file will override any that are "
               "found in the Mantid.Properties file\n";
    filestr << "# As this file will not be replaced with futher installations "
               "of Mantid it is a safe place to put \n";
    filestr << "# properties that suit your particular installation.\n";
    filestr << "#\n";
    filestr << "# See here for a list of possible options:\n";
    filestr << "# "
               "http://www.mantidproject.org/"
               "Properties_File#Mantid.User.Properties\n\n";
    filestr << "##\n";
    filestr << "## GENERAL\n";
    filestr << "##\n\n";
    filestr << "## Set the number of algorithm properties to retain\n";
    filestr << "#algorithms.retained=90\n\n";
    filestr << "## Hides catagories from the algorithm list in MantidPlot\n";
    filestr << "#algorithms.catagories.hidden=Muons,Inelastic\n\n";
    filestr
        << "## Set the maximum number of coures used to run algorithms over\n";
    filestr << "#MultiThreaded.MaxCores=4\n\n";
    filestr << "##\n";
    filestr << "## FACILITY AND INSTRUMENT\n";
    filestr << "##\n\n";
    filestr << "## Sets the default facility\n";
    filestr << "## e.g.: ISIS, SNS, ILL\n";
    filestr << "default.facility=\n\n";
    filestr << "## Sets the default instrument\n";
    filestr << "## e.g. IRIS, HET, NIMROD\n";
    filestr << "default.instrument=\n\n";
    filestr << '\n';
    filestr << "## Sets the Q.convention\n";
    filestr << "## Set to Crystallography for kf-ki instead of default "
               "Inelastic which is ki-kf\n";
    filestr << "#Q.convention=Crystallography\n";
    filestr << "##\n";
    filestr << "## DIRECTORIES\n";
    filestr << "##\n\n";
    filestr << "## Sets a list of directories (separated by semi colons) to "
               "search for data\n";
    filestr << "#datasearch.directories=../data;../isis/data\n\n";
    filestr << "## Set a list (separated by semi colons) of directories to "
               "look for additional Python scripts\n";
    filestr << "#pythonscripts.directories=../scripts;../docs/MyScripts\n\n";
    filestr << "## Uncomment to enable archive search - ICat and Orbiter\n";
    filestr << "#datasearch.searcharchive=On\n\n";
    filestr << "## Sets default save directory\n";
    filestr << "#defaultsave.directory=../data\n\n";
    filestr << "##\n";
    filestr << "## LOGGING\n";
    filestr << "##\n\n";
    filestr << "## Uncomment to change logging level\n";
    filestr << "## Default is information\n";
    filestr
        << "## Valid values are: error, warning, notice, information, debug\n";
    filestr << "#logging.loggers.root.level=information\n\n";
    filestr << "## Sets the lowest level messages to be logged to file\n";
    filestr << "## Default is warning\n";
    filestr
        << "## Valid values are: error, warning, notice, information, debug\n";
    filestr << "#logging.channels.fileFilterChannel.level=debug\n\n";
    filestr << "## Sets the file to write logs to\n";
    filestr << "#logging.channels.fileChannel.path=../mantid.log\n";
    filestr << "## Uncomment the following line to flush log messages to disk "
               "immediately.\n";
    filestr << "## Useful for debugging crashes but it will hurt performance\n";
    filestr << "#logging.channels.fileChannel.flush = true\n\n";
    filestr << "##\n";
    filestr << "## MantidPlot\n";
    filestr << "##\n\n";
    filestr << "## Show invisible workspaces\n";
    filestr << "#MantidOptions.InvisibleWorkspaces=0\n";
    filestr << "## Re-use plot instances for different plot types\n";
    filestr << "#MantidOptions.ReusePlotInstances=Off\n\n";
    filestr << "## Uncomment to disable use of OpenGL to render unwrapped "
               "instrument views\n";
    filestr << "#MantidOptions.InstrumentView.UseOpenGL=Off\n";

    filestr.close();
  } catch (std::runtime_error &ex) {
    g_log.warning() << "Unable to write out user.properties file to "
                    << getUserPropertiesDir() << m_user_properties_file_name
                    << " error: " << ex.what() << '\n';
  }
}

/**
 * Provides a default Configuration string to use if the config file cannot be
 * loaded.
 * @returns The string value of default properties
 */
std::string ConfigServiceImpl::defaultConfig() const {
  std::string propFile =
      "# logging configuration"
      "# root level message filter (drop to debug for more messages)"
      "logging.loggers.root.level = debug"
      "# splitting the messages to many logging channels"
      "logging.loggers.root.channel.class = SplitterChannel"
      "logging.loggers.root.channel.channel1 = consoleChannel"
      "logging.loggers.root.channel.channel2 = fileFilterChannel"
      "# output to the console - primarily for console based apps"
      "logging.channels.consoleChannel.class = ConsoleChannel"
      "logging.channels.consoleChannel.formatter = f1"
      "# specfic filter for the file channel raising the level to warning "
      "(drop to debug for debugging)"
      "logging.channels.fileFilterChannel.class= FilterChannel"
      "logging.channels.fileFilterChannel.channel= fileChannel"
      "logging.channels.fileFilterChannel.level= warning"
      "# output to a file (For error capturing and debugging)"
      "logging.channels.fileChannel.class = debug"
      "logging.channels.fileChannel.path = ../logs/mantid.log"
      "logging.channels.fileChannel.formatter.class = PatternFormatter"
      "logging.channels.fileChannel.formatter.pattern = %Y-%m-%d %H:%M:%S,%i "
      "[%I] %p %s - %t"
      "logging.formatters.f1.class = PatternFormatter"
      "logging.formatters.f1.pattern = %s-[%p] %t"
      "logging.formatters.f1.times = UTC";
  return propFile;
}

//-------------------------------
// Public member functions
//-------------------------------

/**
 * Removes the user properties file & loads a fresh configuration
 */
void ConfigServiceImpl::reset() {
  // Remove the current user properties file and write a fresh one
  try {
    Poco::File userFile(getUserFilename());
    userFile.remove();
  } catch (Poco::Exception &) {
  }
  createUserPropertiesFile();

  // Now load the original
  const bool append = false;
  const bool updateCaches = true;
  updateConfig(getPropertiesDir() + m_properties_file_name, append,
               updateCaches);
}

/** Updates and existing configuration and restarts the logging
 *  @param filename :: The filename and optionally path of the file to load
 *  @param append ::   If false (default) then any previous configuration is
 * discarded,
 *                  otherwise the new keys are added, and repeated keys will
 * override existing ones.
 *  @param update_caches :: If true(default) then the various property caches
 * are updated
 */
void ConfigServiceImpl::updateConfig(const std::string &filename,
                                     const bool append,
                                     const bool update_caches) {
  loadConfig(filename, append);

  // Ensure that the default save directory makes sense
  /*
  if (!append)
  {
    std::string save_dir = getString("defaultsave.directory");
    if (Poco::trimInPlace(save_dir).size() == 0)
      setString("defaultsave.directory", Poco::Path::home());
  }
  */

  if (update_caches) {
    // Only configure logging once
    configureLogging();
    // Ensure that any relative paths given in the configuration file are
    // relative to the correct directory
    convertRelativeToAbsolute();
    // Configure search paths into a specially saved store as they will be used
    // frequently
    cacheDataSearchPaths();
    appendDataSearchDir(getString("defaultsave.directory"));
    cacheUserSearchPaths();
    cacheInstrumentPaths();
  }
}

/**
 * Save the configuration to the user file
 * @param filename :: The filename for the saved configuration
 * @throw std::runtime_error if the file cannot be opened
 */
void ConfigServiceImpl::saveConfig(const std::string &filename) const {
  // Open and read the user properties file
  std::string updated_file;

  std::ifstream reader(filename.c_str(), std::ios::in);
  if (reader.bad()) {
    throw std::runtime_error("Error opening user properties file. Cannot save "
                             "updated configuration.");
  }

  std::string file_line, output;
  bool line_continuing(false);
  while (std::getline(reader, file_line)) {
    if (!file_line.empty()) {
      char last = *(file_line.end() - 1);
      if (last == '\\') {
        // If we are not in line continuation mode then need
        // a fresh start line
        if (!line_continuing)
          output = "";
        line_continuing = true;
        output += file_line + "\n";
        continue;
      } else if (line_continuing) {
        output += file_line;
        line_continuing = false;
      } else {
        output = file_line;
      }
    } else {
      output = "";
      updated_file += "\n";
      continue;
    } // end if-else

    // Output is the current line in the file

    // Extract the key from the current line
    std::string key;
    std::string::size_type pos = output.find('=');
    if (pos == std::string::npos) {
      key = output; // If no equals then the entire thing is the key
    } else {
      key = output.substr(0, pos); // Strip the equals to get only the key
    }
    // Now deal with trimming (removes spaces)
    Poco::trimInPlace(key);

    // Find the comments
    std::string::size_type comment = key.find('#');

    // Check if it exists in the service using hasProperty and make sure it
    // isn't a comment
    if (comment == 0) {
      updated_file += output;
    } else if (!hasProperty(key)) {
      // Remove the key from the changed key list
      m_changed_keys.erase(key);
      continue;
    } else {
      // If it does exist make sure the value is current
      std::string value = getString(key, false);
      Poco::replaceInPlace(value, "\\", "\\\\"); // replace single \ with double
      updated_file.append(key).append("=").append(value);
      // Remove the key from the changed key list
      m_changed_keys.erase(key);
    }
    updated_file += "\n";
  } // End while-loop

  // Any remaining keys within the changed key store weren't present in the
  // current user properties so append them
  if (!m_changed_keys.empty()) {
    updated_file += "\n";
    auto key_end = m_changed_keys.end();
    for (auto key_itr = m_changed_keys.begin(); key_itr != key_end;) {
      updated_file += *key_itr + "=";
      std::string value = getString(*key_itr, false);
      Poco::replaceInPlace(value, "\\", "\\\\"); // replace single \ with double
      updated_file += value;
      if (++key_itr != key_end) {
        updated_file += "\n";
      }
    }
    m_changed_keys.clear();
  }

  // Write out the new file
  std::ofstream writer(filename.c_str(), std::ios_base::trunc);
  if (writer.bad()) {
    writer.close();
    g_log.error() << "Error writing new user properties file. Cannot save "
                     "current configuration.\n";
    throw std::runtime_error("Error writing new user properties file. Cannot "
                             "save current configuration.");
  }

  writer.write(updated_file.c_str(), updated_file.size());
  writer.close();
}

/** Searches for a string within the currently loaded configuaration values and
 *  returns the value as a string. If the key is one of those that was a
 *possible relative path
 *  then the local store is searched first.
 *
 *  @param keyName :: The case sensitive name of the property that you need the
 *value of.
 *  @param use_cache :: If true, the local cache of directory names is queried
 *first.
 *  @returns The string value of the property, or an empty string if the key
 *cannot be found
 */
std::string ConfigServiceImpl::getString(const std::string &keyName,
                                         bool use_cache) const {
  if (use_cache) {
    auto mitr = m_AbsolutePaths.find(keyName);
    if (mitr != m_AbsolutePaths.end()) {
      return (*mitr).second;
    }
  }
  std::string retVal;
  try {
    retVal = m_pConf->getString(keyName);
  } catch (Poco::NotFoundException &) {
    g_log.debug() << "Unable to find " << keyName << " in the properties file"
                  << '\n';
    retVal = "";
  }
  return retVal;
}

/** Searches for keys within the currently loaded configuaration values and
 *  returns them as strings in a vector.
 *
 *  @param keyName :: The case sensitive name of the property that you need the
 *key for.
 *  @returns The string value of each key within a vector, or an empty vector if
 *there isn't
 *  a key or it couldn't be found.
 */
std::vector<std::string>
ConfigServiceImpl::getKeys(const std::string &keyName) const {
  std::vector<std::string> rawKeys;
  m_pConf->keys(keyName, rawKeys);
  return rawKeys;
}

/**
 * Recursively gets a list of all config options from a given root node.
 *
 * @return Vector containing all config options
 */
void ConfigServiceImpl::getKeysRecursive(
    const std::string &root, std::vector<std::string> &allKeys) const {
  std::vector<std::string> rootKeys = getKeys(root);

  if (rootKeys.empty())
    allKeys.push_back(root);

  for (auto &rootKey : rootKeys) {
    std::string searchString;
    if (root.empty()) {
      searchString.append(rootKey);
    } else {
      searchString.append(root).append(".").append(rootKey);
    }

    getKeysRecursive(searchString, allKeys);
  }
}

/**
* Recursively gets a list of all config options.
*
* This function is needed as Boost Python does not like calling function with
* default arguments.
*
* @return Vector containing all config options
*/
std::vector<std::string> ConfigServiceImpl::keys() const {
  std::vector<std::string> allKeys;
  getKeysRecursive("", allKeys);
  return allKeys;
}

/** Removes a key from the memory stored properties file and inserts the key
 *into the
 *  changed key list so that when the program calls saveConfig the properties
 *file will
 *  be the same and not contain the key no more
 *
 *  @param rootName :: The key that is to be deleted
 */
void ConfigServiceImpl::remove(const std::string &rootName) const {
  m_pConf->remove(rootName);
  m_changed_keys.insert(rootName);
}

/** Checks to see whether the given key exists.
 *
 *  @param rootName :: The case sensitive key that you are looking to see if
 *exists.
 *  @returns Boolean value denoting whether the exists or not.
 */
bool ConfigServiceImpl::hasProperty(const std::string &rootName) const {
  return m_pConf->hasProperty(rootName);
}

/** Checks to see whether the given file target is an executable one and it
 *exists.
 * This method will expand environment variables found in the given file path.
 *
 *  @param target :: The path to the file you wish to see whether it's an
 *executable.
 *  @returns Boolean value denoting whether the file is an executable or not.
 */
bool ConfigServiceImpl::isExecutable(const std::string &target) const {
  try {
    std::string expTarget = Poco::Path::expand(target);
    Poco::File tempFile = Poco::File(expTarget);

    if (tempFile.exists()) {
      return tempFile.canExecute();
    } else
      return false;
  } catch (Poco::Exception &) {
    return false;
  }
}

/** Runs a command line string to open a program. The function can take program
 *arguments.
 *  i.e it can load in a file to the program on startup.
 *
 *  This method will expand environment variables found in the given file path.
 *
 *  @param programFilePath :: The directory where the program is located.
 *  @param programArguments :: The arguments that the program can take on
 *startup. For example,
 *  the file to load up.
 */

void ConfigServiceImpl::launchProcess(
    const std::string &programFilePath,
    const std::vector<std::string> &programArguments) const {
  try {
    std::string expTarget = Poco::Path::expand(programFilePath);
    Poco::Process::launch(expTarget, programArguments);
  } catch (Poco::SystemException &e) {
    throw std::runtime_error(e.what());
  }
}

/**
 * Set a configuration property. An existing key will have its value updated.
 * @param key :: The key to refer to this property
 * @param value :: The value of the property
 */
void ConfigServiceImpl::setString(const std::string &key,
                                  const std::string &value) {
  // If the value is unchanged (after any path conversions), there's nothing to
  // do.
  const std::string old = getString(key);
  if (value == old)
    return;

  // Ensure we keep a correct full path
  std::map<std::string, bool>::const_iterator itr = m_ConfigPaths.find(key);
  if (itr != m_ConfigPaths.end()) {
    m_AbsolutePaths[key] = makeAbsolute(value, key);
  }

  if (key == "datasearch.directories") {
    cacheDataSearchPaths();
  } else if (key == "usersearch.directories") {
    cacheUserSearchPaths();
  } else if (key == "instrumentDefinition.directory") {
    cacheInstrumentPaths();
  } else if (key == "defaultsave.directory") {
    appendDataSearchDir(value);
  }

  m_pConf->setString(key, value);

  m_notificationCenter.postNotification(new ValueChanged(key, value, old));
  m_changed_keys.insert(key);
}

/** Searches for a string within the currently loaded configuaration values and
 *  attempts to convert the values to the template type supplied.
 *
 *  @param keyName :: The case sensitive name of the property that you need the
 *value of.
 *  @param out ::     The value if found
 *  @returns A success flag - 0 on failure, 1 on success
 */
template <typename T>
int ConfigServiceImpl::getValue(const std::string &keyName, T &out) {
  std::string strValue = getString(keyName);
  int result = Mantid::Kernel::Strings::convert(strValue, out);
  return result;
}

/**
 * Return the full filename of the local properties file.
 * @returns A string containing the full path to the local file.
 */
std::string ConfigServiceImpl::getLocalFilename() const {
#ifdef _WIN32
  return "Mantid.local.properties";
#else
  return "/etc/mantid.local.properties";
#endif
}

/**
 * Return the full filename of the user properties file
 * @returns A string containing the full path to the user file
 */
std::string ConfigServiceImpl::getUserFilename() const {
  return getUserPropertiesDir() + m_user_properties_file_name;
}

/** Searches for the string within the environment variables and returns the
 *  value as a string.
 *
 *  @param keyName :: The name of the environment variable that you need the
 *value of.
 *  @returns The string value of the property
 */
std::string ConfigServiceImpl::getEnvironment(const std::string &keyName) {
  return m_pSysConfig->getString("system.env." + keyName);
}

/** Gets the name of the host operating system
 *
 *  @returns The name pf the OS version
 */
std::string ConfigServiceImpl::getOSName() {
  return m_pSysConfig->getString("system.osName");
}

/** Gets the name of the computer running Mantid
 *
 *  @returns The  name of the computer
 */
std::string ConfigServiceImpl::getOSArchitecture() {
  return m_pSysConfig->getString("system.osArchitecture");
}

/** Gets the name of the operating system Architecture
 *
 * @returns The operating system architecture
 */
std::string ConfigServiceImpl::getComputerName() {
  return m_pSysConfig->getString("system.nodeName");
}

/** Gets the name of the operating system version
 *
 * @returns The operating system version
 */
std::string ConfigServiceImpl::getOSVersion() {
  return m_pSysConfig->getString("system.osVersion");
}

/// @returns true if the file exists and can be read
bool canRead(const std::string &filename) {
  // check for existence of the file
  Poco::File pocoFile(filename);
  if (!pocoFile.exists()) {
    return false;
  }
  // just return if it is readable
  return pocoFile.canRead();
}

/// @returns the value associated with the key.
std::string getValueFromStdOut(const std::string &orig,
                               const std::string &key) {
  size_t start = orig.find(key);
  if (start == std::string::npos) {
    return std::string();
  }
  start += key.size();

  size_t stop = orig.find('\n', start);
  if (stop == std::string::npos) {
    return std::string();
  }

  return Mantid::Kernel::Strings::strip(orig.substr(start, stop - start - 1));
}

/**
 * Gets the name of the operating system version in a human readable form.
 *
 * @returns The operating system desciption
 */
std::string ConfigServiceImpl::getOSVersionReadable() {
  std::string description;

  // read os-release
  static const std::string OS_RELEASE("/etc/os-release");
  if (canRead(OS_RELEASE)) {
    static const std::string PRETTY_NAME("PRETTY_NAME=");

    // open it to see if it has the magic line
    std::ifstream handle(OS_RELEASE.c_str(), std::ios::in);

    // go through the file
    std::string line;
    while (std::getline(handle, line)) {
      if (line.find(PRETTY_NAME) != std::string::npos) {
        if (line.length() > PRETTY_NAME.length() + 1) {
          size_t length = line.length() - PRETTY_NAME.length() - 2;
          description = line.substr(PRETTY_NAME.length() + 1, length);
        }
        break;
      }
    }

    // cleanup
    handle.close();
    if (!description.empty()) {
      return description;
    }
  }

  // read redhat-release
  static const std::string REDHAT_RELEASE("/etc/redhat-release");
  if (canRead(REDHAT_RELEASE)) {
    // open it to see if it has the magic line
    std::ifstream handle(REDHAT_RELEASE.c_str(), std::ios::in);

    // go through the file
    std::string line;
    while (std::getline(handle, line)) {
      if (!line.empty()) {
        description = line;
        break;
      }
    }

    // cleanup
    handle.close();
    if (!description.empty()) {
      return description;
    }
  }

  // try system calls
  std::string cmd;
  std::vector<std::string> args;
#ifdef __APPLE__
  cmd = "sw_vers"; // mac
#elif _WIN32
  cmd = "wmic";                 // windows
  args.emplace_back("os");      // windows
  args.emplace_back("get");     // windows
  args.emplace_back("Caption"); // windows
  args.emplace_back("/value");  // windows
#endif

  if (!cmd.empty()) {
    try {
      Poco::Pipe outPipe, errorPipe;
      Poco::ProcessHandle ph =
          Poco::Process::launch(cmd, args, nullptr, &outPipe, &errorPipe);
      const int rc = ph.wait();
      // Only if the command returned successfully.
      if (rc == 0) {
        Poco::PipeInputStream pipeStream(outPipe);
        std::stringstream stringStream;
        Poco::StreamCopier::copyStream(pipeStream, stringStream);
        const std::string result = stringStream.str();
#ifdef __APPLE__
        const std::string product_name =
            getValueFromStdOut(result, "ProductName:");
        const std::string product_vers =
            getValueFromStdOut(result, "ProductVersion:");

        description = product_name + " " + product_vers;
#elif _WIN32
        description = getValueFromStdOut(result, "Caption=");
#else
        UNUSED_ARG(result); // only used on mac and windows
#endif
      } else {
        std::stringstream messageStream;
        messageStream << "command \"" << cmd << "\" failed with code: " << rc;
        g_log.debug(messageStream.str());
      }
    } catch (Poco::SystemException &e) {
      g_log.debug("command \"" + cmd + "\" failed");
      g_log.debug(e.what());
    }
  }

  return description;
}

/// @returns The name of the current user as reported by the environment.
std::string ConfigServiceImpl::getUsername() {
  std::string username;

  // mac and favorite way to get username on linux
  try {
    username = m_pSysConfig->getString("system.env.USER");
    if (!username.empty()) {
      return username;
    }
  } catch (Poco::NotFoundException &e) {
    UNUSED_ARG(e); // let it drop on the floor
  }

  // windoze and alternate linux username variable
  try {
    username = m_pSysConfig->getString("system.env.USERNAME");
    if (!username.empty()) {
      return username;
    }
  } catch (Poco::NotFoundException &e) {
    UNUSED_ARG(e); // let it drop on the floor
  }

  // give up and return an empty string
  return std::string();
}

/** Gets the absolute path of the current directory containing the dll
 *
 * @returns The absolute path of the current directory containing the dll
 */
std::string ConfigServiceImpl::getCurrentDir() {
  return m_pSysConfig->getString("system.currentDir");
}

/** Gets the absolute path of the current directory containing the dll. Const
 *version.
 *
 * @returns The absolute path of the current directory containing the dll
 */
std::string ConfigServiceImpl::getCurrentDir() const {
  return m_pSysConfig->getString("system.currentDir");
}

/** Gets the absolute path of the temp directory
 *
 * @returns The absolute path of the temp directory
 */
std::string ConfigServiceImpl::getTempDir() {
  return m_pSysConfig->getString("system.tempDir");
}

/** Gets the absolute path of the appdata directory
*
* @returns The absolute path of the appdata directory
*/
std::string ConfigServiceImpl::getAppDataDir() {
  const std::string applicationName = "mantid";
#if POCO_OS == POCO_OS_WINDOWS_NT
  const std::string vendorName = "mantidproject";
  std::string appdata = std::getenv("APPDATA");
  Poco::Path path(appdata);
  path.makeDirectory();
  path.pushDirectory(vendorName);
  path.pushDirectory(applicationName);
  return path.toString();
#else // linux and mac
  Poco::Path path(Poco::Path::home());
  path.pushDirectory("." + applicationName);
  return path.toString();
#endif
}

/**
 * Get the directory containing the program executable
 * @returns A string containing the path of the directory
 * containing the executable, including a trailing slash
 */
std::string ConfigServiceImpl::getDirectoryOfExecutable() const {
  return Poco::Path(getPathToExecutable()).parent().toString();
}

/**
  * Get the full path to the executing program (i.e. whatever Mantid is embedded
 * in)
  * @returns A string containing the full path the the executable
  */
std::string ConfigServiceImpl::getPathToExecutable() const {
  std::string execpath;
  const size_t LEN(1024);
  // cppcheck-suppress variableScope
  char pBuf[LEN];

#ifdef _WIN32
  unsigned int bytes = GetModuleFileName(NULL, pBuf, LEN);
#elif defined __linux__
  char szTmp[32];
  sprintf(szTmp, "/proc/%d/exe", getpid());
  ssize_t bytes = readlink(szTmp, pBuf, LEN);
#elif defined __APPLE__
  // Two calls to _NSGetExecutablePath required - first to get size of buffer
  uint32_t bytes(0);
  _NSGetExecutablePath(pBuf, &bytes);
  const int success = _NSGetExecutablePath(pBuf, &bytes);
  if (success < 0)
    bytes = 1025;
#endif

  if (bytes > 0 && bytes < 1024) {
    pBuf[bytes] = '\0';
    execpath = std::string(pBuf);
  }
  return execpath;
}

/**
 * Check if the path is on a network drive
 * @param path :: The path to be checked
 * @return True if the path is on a network drive.
 */
bool ConfigServiceImpl::isNetworkDrive(const std::string &path) {
#ifdef _WIN32
  // if path is relative get the full one
  char buff[MAX_PATH];
  GetFullPathName(path.c_str(), MAX_PATH, buff, NULL);
  std::string fullName(buff);
  size_t i = fullName.find(':');

  // if the full path doesn't contain a drive letter assume it's on the network
  if (i == std::string::npos)
    return true;

  fullName.erase(i + 1);
  fullName += '\\'; // make sure the name has the trailing backslash
  UINT type = GetDriveType(fullName.c_str());
  return DRIVE_REMOTE == type;
#elif defined __linux__
  // This information is only present in the /proc/mounts file on linux. There
  // are no drives on
  // linux only mount locations therefore the test will have to check the path
  // against
  // entries in /proc/mounts to see if the filesystem type is NFS or SMB (any
  // others ????)
  // Each line corresponds to a particular mounted location
  // 1st column - device name
  // 2nd column - mounted location
  // 3rd column - filesystem type commonly ext2, ext3 for hard drives and NFS or
  // SMB for
  //              network locations
  std::ifstream mntfile("/proc/mounts");
  std::string txtread("");
  while (getline(mntfile, txtread)) {
    std::istringstream strm(txtread);
    std::string devname(""), mntpoint(""), fstype("");
    strm >> devname >> mntpoint >> fstype;
    if (!strm)
      continue;
    // I can't be sure that the file system type is always lower case
    std::transform(fstype.begin(), fstype.end(), fstype.begin(), toupper);
    // Skip the current line if the file system isn't a network one
    if (fstype != "NFS" && fstype != "SMB")
      continue;
    // Now we have a line containing a network filesystem and just need to check
    // if the path
    // supplied contains the mount location. There is a small complication in
    // that the mount
    // points within the file have certain characters transformed into their
    // octal
    // representations, for example spaces->040.
    std::string::size_type idx = mntpoint.find("\\0");
    if (idx != std::string::npos) {
      std::string oct = mntpoint.substr(idx + 1, 3);
      strm.str(oct);
      int printch(-1);
      strm.setf(std::ios::oct, std::ios::basefield);
      strm >> printch;
      if (printch != -1) {
        mntpoint = mntpoint.substr(0, idx) + static_cast<char>(printch) +
                   mntpoint.substr(idx + 4);
      }
      // Search for this at the start of the path
      if (path.find(mntpoint) == 0)
        return true;
    }
  }
  return false;
#else
  UNUSED_ARG(path);
  // Not yet implemented for the mac
  return false;
#endif
}

/**
 * Gets the directory that we consider to be the directory containing the
 * Mantid.properties file.
 * Basically, this is the either the directory pointed to by MANTIDPATH or the
 * directory of the current
 * executable if this is not set.
 * @returns The directory to consider as the base directory, including a
 * trailing slash
 */
std::string ConfigServiceImpl::getPropertiesDir() const { return m_strBaseDir; }

/**
 * Return the directory that Mantid should use for writing any files it needs so
 * that
 * this is kept separated to user saved files. A trailing slash is appended
 * so that filenames can more easily be concatenated with this
 * @return the directory that Mantid should use for writing files
 */
std::string ConfigServiceImpl::getUserPropertiesDir() const {
#ifdef _WIN32
  return m_strBaseDir;
#else
  Poco::Path datadir(m_pSysConfig->getString("system.homeDir"));
  datadir.append(".mantid");
  // Create the directory if it doesn't already exist
  Poco::File(datadir).createDirectory();
  return datadir.toString() + "/";
#endif
}

/**
 * Return the list of search paths
 * @returns A vector of strings containing the defined search directories
 */
const std::vector<std::string> &ConfigServiceImpl::getDataSearchDirs() const {
  return m_DataSearchDirs;
}

/**
 * Set a list of search paths via a vector
 * @param searchDirs :: A list of search directories
 */
void ConfigServiceImpl::setDataSearchDirs(
    const std::vector<std::string> &searchDirs) {
  std::string searchPaths = boost::join(searchDirs, ";");
  setDataSearchDirs(searchPaths);
}

/**
 * Set a list of search paths via a string
 * @param searchDirs :: A string containing a list of search directories
 * separated by a semi colon (;).
 */
void ConfigServiceImpl::setDataSearchDirs(const std::string &searchDirs) {
  setString("datasearch.directories", searchDirs);
}

/**
 *  Appends the passed subdirectory path to the end of each of data
 *  search dirs and adds these new dirs to data search directories
 *  @param subdir :: the subdirectory path to add (relative)
 */
void ConfigServiceImpl::appendDataSearchSubDir(const std::string &subdir) {
  if (subdir.empty())
    return;

  Poco::Path subDirPath;
  try {
    subDirPath = Poco::Path(subdir);
  } catch (Poco::PathSyntaxException &) {
    return;
  }

  if (!subDirPath.isDirectory() || !subDirPath.isRelative()) {
    return;
  }

  auto newDataDirs = m_DataSearchDirs;
  for (const auto &path : m_DataSearchDirs) {
    Poco::Path newDirPath;
    try {
      newDirPath = Poco::Path(path);
      newDirPath.append(subDirPath);
      newDataDirs.push_back(newDirPath.toString());
    } catch (Poco::PathSyntaxException &) {
      continue;
    }
  }

  setDataSearchDirs(newDataDirs);
}

/**
 *  Adds the passed path to the end of the list of data search paths
 *  the path name must be absolute
 *  @param path :: the absolute path to add
 */
void ConfigServiceImpl::appendDataSearchDir(const std::string &path) {
  if (path.empty())
    return;

  Poco::Path dirPath;
  try {
    dirPath = Poco::Path(path);
    dirPath.makeDirectory();
  } catch (Poco::PathSyntaxException &) {
    return;
  }
  if (!isInDataSearchList(dirPath.toString())) {
    std::string newSearchString;
    std::vector<std::string>::const_iterator it = m_DataSearchDirs.begin();
    for (; it != m_DataSearchDirs.end(); ++it) {
      newSearchString.append(*it);
      newSearchString.append(";");
    }
    newSearchString.append(path);
    setString("datasearch.directories", newSearchString);
  }
}

/**
 * Return the list of user search paths
 * @returns A vector of strings containing the defined search directories
 */
const std::vector<std::string> &ConfigServiceImpl::getUserSearchDirs() const {
  return m_UserSearchDirs;
}

/**
* Sets the search directories for XML instrument definition files (IDFs)
* @param directories An ordered list of paths for instrument searching
*/
void ConfigServiceImpl::setInstrumentDirectories(
    const std::vector<std::string> &directories) {
  m_InstrumentDirs = directories;
}

/**
 * Return the search directories for XML instrument definition files (IDFs)
 * @returns An ordered list of paths for instrument searching
 */
const std::vector<std::string> &
ConfigServiceImpl::getInstrumentDirectories() const {
  return m_InstrumentDirs;
}

/**
 * Return the base search directories for XML instrument definition files (IDFs)
 * @returns a last entry of getInstrumentDirectories
 */
const std::string ConfigServiceImpl::getInstrumentDirectory() const {
  return m_InstrumentDirs.back();
}
/**
 * Return the search directory for vtp files
 * @returns a path
 */
const std::string ConfigServiceImpl::getVTPFileDirectory() {
  // Determine the search directory for XML instrument definition files (IDFs)
  std::string directoryName = getString("instrumentDefinition.vtpDirectory");

  if (directoryName.empty()) {
    Poco::Path path(getAppDataDir());
    path.makeDirectory();
    path.pushDirectory("instrument");
    path.pushDirectory("geometryCache");
    directoryName = path.toString();
  }
  return directoryName;
}
/**
 * Fills the internal cache of instrument definition directories and creates
 * The %appdata%/mantidproject/mantid or $home/.mantid directory.
 *
 * This will normally contain from Index 0
 * - The download directory (win %appdata%/mantidproject/mantid/instrument)
 *   (linux $home/.mantid/instrument )
 * - The user instrument area /etc/mantid/instrument (not on windows)
 * - The install directory/instrument
 */
void ConfigServiceImpl::cacheInstrumentPaths() {
  m_InstrumentDirs.clear();

  Poco::Path path(getAppDataDir());
  path.makeDirectory();
  path.pushDirectory("instrument");
  const std::string appdatadir = path.toString();
  addDirectoryifExists(appdatadir, m_InstrumentDirs);

#ifndef _WIN32
  addDirectoryifExists("/etc/mantid/instrument", m_InstrumentDirs);
#endif

  // Determine the search directory for XML instrument definition files (IDFs)
  std::string directoryName = getString("instrumentDefinition.directory");
  if (directoryName.empty()) {
    // This is the assumed deployment directory for IDFs, where we need to be
    // relative to the
    // directory of the executable, not the current working directory.
    directoryName =
        Poco::Path(getPropertiesDir()).resolve("../instrument").toString();
  }
  addDirectoryifExists(directoryName, m_InstrumentDirs);
}

/**
 * Verifies the directory exists and add it to the back of the directory list if
 * valid
 * @param directoryName the directory name to add
 * @param directoryList the list to add the directory to
 * @returns true if the directory was valid and added to the list
 */
bool ConfigServiceImpl::addDirectoryifExists(
    const std::string &directoryName, std::vector<std::string> &directoryList) {
  try {
    if (Poco::File(directoryName).isDirectory()) {
      directoryList.push_back(directoryName);
      return true;
    } else {
      g_log.information("Unable to locate directory at: " + directoryName);
      return false;
    }
  } catch (Poco::PathNotFoundException &) {
    g_log.information("Unable to locate directory at: " + directoryName);
    return false;
  } catch (Poco::FileNotFoundException &) {
    g_log.information("Unable to locate directory at: " + directoryName);
    return false;
  }
}

std::string ConfigServiceImpl::getFacilityFilename(const std::string &fName) {
  // first try the supplied file
  if (!fName.empty()) {
    const Poco::File fileObj(fName);
    if (fileObj.exists()) {
      return fName;
    }
  }

  // search all of the instrument directories
  const std::vector<std::string> directoryNames = getInstrumentDirectories();

  // only use downloaded instruments if configured to download
  const std::string updateInstrStr =
      this->getString("UpdateInstrumentDefinitions.OnStartup");

  auto instrDir = directoryNames.begin();
  if (updateInstrStr == "1" || updateInstrStr == "on" ||
      updateInstrStr == "On") {
    // do nothing
  } else {
    instrDir++; // advance to after the first value
  }

  for (; instrDir != directoryNames.end(); ++instrDir) {
    std::string filename = (*instrDir) + "Facilities.xml";

    Poco::File fileObj(filename);
    // stop when you find the first one
    if (fileObj.exists())
      return filename;
  }

  // getting this far means the file was not found
  std::string directoryNamesList = boost::algorithm::join(directoryNames, ", ");
  throw std::runtime_error("Failed to find \"Facilities.xml\". Searched in " +
                           directoryNamesList);
}

/**
 * Load facility information from instrumentDir/Facilities.xml file if fName
 * parameter
 * is not set
 * @param fName :: An alternative file name for loading facilities information.
 */
void ConfigServiceImpl::updateFacilities(const std::string &fName) {
  clearFacilities();

  try {
    std::string fileName = getFacilityFilename(fName);

    // Set up the DOM parser and parse xml file
    Poco::AutoPtr<Poco::XML::Document> pDoc;
    try {
      Poco::XML::DOMParser pParser;
      pDoc = pParser.parse(fileName);
    } catch (...) {
      throw Kernel::Exception::FileError("Unable to parse file:", fileName);
    }

    // Get pointer to root element
    Poco::XML::Element *pRootElem = pDoc->documentElement();
    if (!pRootElem->hasChildNodes()) {
      throw std::runtime_error("No root element in Facilities.xml file");
    }

    Poco::AutoPtr<Poco::XML::NodeList> pNL_facility =
        pRootElem->getElementsByTagName("facility");
    unsigned long n = pNL_facility->length();

    for (unsigned long i = 0; i < n; ++i) {
      Poco::XML::Element *elem =
          dynamic_cast<Poco::XML::Element *>(pNL_facility->item(i));
      if (elem) {
        m_facilities.push_back(new FacilityInfo(elem));
      }
    }

    if (m_facilities.empty()) {
      throw std::runtime_error("The facility definition file " + fileName +
                               " defines no facilities");
    }

  } catch (std::exception &e) {
    g_log.error(e.what());
  }
}

/// Empty the list of facilities, deleting the FacilityInfo objects in the
/// process
void ConfigServiceImpl::clearFacilities() {
  for (auto &facility : m_facilities) {
    delete facility;
  }
  m_facilities.clear();
}

/**
 * Returns instruments with given name
 * @param  instrumentName Instrument name
 * @return the instrument information object
 * @throw NotFoundError if iName was not found
 */
const InstrumentInfo &
ConfigServiceImpl::getInstrument(const std::string &instrumentName) const {

  // Let's first search for the instrument in our default facility
  std::string defaultFacility = ConfigService::Instance().getFacility().name();

  if (!defaultFacility.empty()) {
    try {
      g_log.debug() << "Looking for " << instrumentName << " at "
                    << defaultFacility << ".\n";
      return getFacility(defaultFacility).instrument(instrumentName);
    } catch (Exception::NotFoundError &) {
      // Well the instName doesn't exist for this facility
      // Move along, there's nothing to see here...
    }
  }

  // Now let's look through the other facilities
  for (auto facility : m_facilities) {
    try {
      g_log.debug() << "Looking for " << instrumentName << " at "
                    << (*facility).name() << ".\n";
      return (*facility).instrument(instrumentName);
    } catch (Exception::NotFoundError &) {
      // Well the instName doesn't exist for this facility...
      // Move along, there's nothing to see here...
    }
  }

  const std::string errMsg =
      "Failed to find an instrument with this name in any facility: '" +
      instrumentName + "' -";
  g_log.debug("Instrument " + instrumentName + " not found");
  throw Exception::NotFoundError(errMsg, instrumentName);
}

/** Gets a vector of the facility Information objects
 * @return A vector of FacilityInfo objects
 */
const std::vector<FacilityInfo *> ConfigServiceImpl::getFacilities() const {
  return m_facilities;
}

/** Gets a vector of the facility names
 * @return A vector of the facility Names
 */
const std::vector<std::string> ConfigServiceImpl::getFacilityNames() const {
  auto names = std::vector<std::string>(m_facilities.size());
  auto itFacilities = m_facilities.begin();
  auto itNames = names.begin();
  for (; itFacilities != m_facilities.end(); ++itFacilities, ++itNames) {
    *itNames = (**itFacilities).name();
  }
  return names;
}

/** Get the default facility
 * @return the facility information object
 */
const FacilityInfo &ConfigServiceImpl::getFacility() const {
  std::string defFacility = getString("default.facility");
  if (defFacility.empty()) {
    defFacility = "ISIS";
  }
  return this->getFacility(defFacility);
}

/**
 * Get a facility
 * @param facilityName :: Facility name
 * @return the facility information object
 * @throw NotFoundException if the facility is not found
 */
const FacilityInfo &
ConfigServiceImpl::getFacility(const std::string &facilityName) const {
  if (facilityName.empty())
    return this->getFacility();

  for (auto facility : m_facilities) {
    if ((*facility).name() == facilityName) {
      return *facility;
    }
  }

  throw Exception::NotFoundError("Facilities", facilityName);
}

/**
 * Set the default facility
 * @param facilityName the facility name
 * @throw NotFoundException if the facility is not found
 */
void ConfigServiceImpl::setFacility(const std::string &facilityName) {
  bool found = false;
  // Look through the facilities for a matching one.
  std::vector<FacilityInfo *>::const_iterator it = m_facilities.begin();
  for (; it != m_facilities.end(); ++it) {
    if ((**it).name() == facilityName) {
      // Found the facility
      found = true;
      // So it's safe to set it as our default
      setString("default.facility", facilityName);
    }
  }
  if (!found) {
    g_log.error("Failed to set default facility to be " + facilityName +
                ". Facility not found");
    throw Exception::NotFoundError("Facilities", facilityName);
  }
}

/**  Add an observer to a notification
 @param observer :: Reference to the observer to add
 */
void ConfigServiceImpl::addObserver(
    const Poco::AbstractObserver &observer) const {
  m_notificationCenter.addObserver(observer);
}

/**  Remove an observer
 @param observer :: Reference to the observer to remove
 */
void ConfigServiceImpl::removeObserver(
    const Poco::AbstractObserver &observer) const {
  m_notificationCenter.removeObserver(observer);
}

/*
Checks to see whether the pvplugins.directory variable is set. If it is set,
assume
we have built Mantid with ParaView
@return True if paraview is available or not disabled.
*/
bool ConfigServiceImpl::pvPluginsAvailable() const {
  std::string pvpluginsDir = getString("pvplugins.directory");
  return !pvpluginsDir.empty();
}

/**
 * Gets the path to the ParaView plugins
 * @returns A string giving the directory of the ParaView plugins
 */
const std::string ConfigServiceImpl::getPVPluginsPath() const {
  return getString("pvplugins.directory");
}

/*
Gets the system proxy information
@url A url to match the proxy to
@return the proxy information.
*/
Kernel::ProxyInfo &ConfigServiceImpl::getProxy(const std::string &url) {
  if (!m_isProxySet) {
    // set the proxy
    // first check if the proxy is defined in the properties file
    std::string proxyHost;
    int proxyPort;
    if ((getValue("proxy.host", proxyHost) == 1) &&
        (getValue("proxy.port", proxyPort) == 1)) {
      // set it from the config values
      m_proxyInfo = ProxyInfo(proxyHost, proxyPort, true);
    } else {
      // get the system proxy
      Poco::URI uri(url);
      Mantid::Kernel::NetworkProxy proxyHelper;
      m_proxyInfo = proxyHelper.getHttpProxy(uri.toString());
    }
    m_isProxySet = true;
  }
  return m_proxyInfo;
}

/** Sets the log level priority for the File log channel
* @param logLevel the integer value of the log level to set, 1=Critical, 7=Debug
*/
void ConfigServiceImpl::setFileLogLevel(int logLevel) {
  setFilterChannelLogLevel(m_filterChannels[0], logLevel);
}
/** Sets the log level priority for the Console log channel
* @param logLevel the integer value of the log level to set, 1=Critical, 7=Debug
*/
void ConfigServiceImpl::setConsoleLogLevel(int logLevel) {
  setFilterChannelLogLevel(m_filterChannels[1], logLevel);
}

/** Sets the Log level for a filter channel
* @param filterChannelName the channel name of the filter channel to change
* @param logLevel the integer value of the log level to set, 1=Critical, 7=Debug
* @throws std::invalid_argument if the channel name is incorrect or it is not a
* filterChannel
*/
void ConfigServiceImpl::setFilterChannelLogLevel(
    const std::string &filterChannelName, int logLevel) {
  Poco::Channel *channel = nullptr;
  try {
    channel = Poco::LoggingRegistry::defaultRegistry().channelForName(
        filterChannelName);
  } catch (Poco::NotFoundException &) {
    throw std::invalid_argument(filterChannelName +
                                " not found in the Logging Registry");
  }

  auto *filterChannel = dynamic_cast<Poco::FilterChannel *>(channel);
  if (filterChannel) {
    filterChannel->setPriority(logLevel);
    int lowestLogLevel = FindLowestFilterLevel();
    // set root level if required
    int rootLevel = Poco::Logger::root().getLevel();
    if (rootLevel != lowestLogLevel) {
      Mantid::Kernel::Logger::setLevelForAll(lowestLogLevel);
    }
    g_log.log(filterChannelName + " log channel set to " +
                  Logger::PriorityNames[logLevel] + " priority",
              static_cast<Logger::Priority>(logLevel));
  } else {
    throw std::invalid_argument(filterChannelName +
                                " was not a filter channel");
  }
}

/** Finds the lowest Log level for all registered filter channels
*/
int ConfigServiceImpl::FindLowestFilterLevel() const {
  int lowestPriority = Logger::Priority::PRIO_FATAL;
  // Find the lowest level of all of the filter channels
  for (const auto &filterChannelName : m_filterChannels) {
    try {
      auto *channel = Poco::LoggingRegistry::defaultRegistry().channelForName(
          filterChannelName);
      auto *filterChannel = dynamic_cast<Poco::FilterChannel *>(channel);
      if (filterChannel) {
        int filterPriority = filterChannel->getPriority();
        if (filterPriority > lowestPriority) {
          lowestPriority = filterPriority;
        }
      }
    } catch (Poco::NotFoundException &) {
      g_log.warning(filterChannelName +
                    " registered log filter channel not found");
    }
  }

  return lowestPriority;
}

/// \cond TEMPLATE
template DLLExport int ConfigServiceImpl::getValue(const std::string &,
                                                   double &);
template DLLExport int ConfigServiceImpl::getValue(const std::string &,
                                                   std::string &);
template DLLExport int ConfigServiceImpl::getValue(const std::string &, int &);
template DLLExport int ConfigServiceImpl::getValue(const std::string &,
                                                   std::size_t &);
/// \endcond TEMPLATE

} // namespace Kernel
} // namespace Mantid