ConfigService.cpp

//----------------------------------------------------------------------
// Includes
//----------------------------------------------------------------------

#include "MantidKernel/ConfigService.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 <Poco/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/Channel.h>
#include <Poco/SplitterChannel.h>
#include <Poco/LoggingRegistry.h>
#include <Poco/PipeStream.h>
#include <Poco/StreamCopier.h>

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

#include <fstream>
#include <iostream>

#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.
 * @param splitted vector to put the splitted path into.
 */
void splitPath(const std::string &path, std::vector<std::string> &splitted) {
  if (path.find(";") == std::string::npos) { // don't bother tokenizing
    splitted.push_back(path);
    return;
  }

  int options =
      Poco::StringTokenizer::TOK_TRIM + Poco::StringTokenizer::TOK_IGNORE_EMPTY;

  splitted.clear();
  Poco::StringTokenizer tokenizer(path, ";,", options);
  Poco::StringTokenizer::Iterator iend = tokenizer.end();
  splitted.reserve(tokenizer.count());
  for (Poco::StringTokenizer::Iterator itr = tokenizer.begin(); itr != iend;
       ++itr) {
    if (!itr->empty()) {
      splitted.push_back(*itr);
    }
  }
}

} // 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> 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);
  }

  /// Virtual destructor
  virtual ~WrappedObject() {}

  /// 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(NULL), m_pSysConfig(NULL), 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 filesystem
      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) {
  // getting at system details
  m_pSysConfig = new WrappedObject<Poco::Util::SystemConfiguration>;
  m_pConf = 0;

  // 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>);

  // 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()) {
    // 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()) {
      // Last, use 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") + "/";
      }
    }
  }

  // Fill the list of possible relative path keys that may require conversion to
  // absolute paths
  m_ConfigPaths.insert(
      std::make_pair("mantidqt.python_interfaces_directory", true));
  m_ConfigPaths.insert(std::make_pair("plugins.directory", true));
  m_ConfigPaths.insert(std::make_pair("pvplugins.directory", true));
  m_ConfigPaths.insert(std::make_pair("mantidqt.plugins.directory", true));
  m_ConfigPaths.insert(std::make_pair("instrumentDefinition.directory", true));
  m_ConfigPaths.insert(