file-library.hh

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#pragma once

#include <stdexcept>
#include <list>
#include <string>

#include <boost/filesystem/path.hpp>

#include <vcsn/misc/export.hh>

namespace vcsn LIBVCSN_API
{
  class file_library
  {
  public:
    using self_t = file_library;

    using path = boost::filesystem::path;
    using path_list_type = std::list<path>;

    class LIBVCSN_API not_found : public std::runtime_error
    {
    public:
      not_found(const path& file);
    };

    file_library();
    file_library(const path& p);
    file_library(const std::string& library, const char* separator);

    template <typename ForwardRange>
      file_library(const ForwardRange& r, const char* sep);

    self_t& push_back(const path& p);
    self_t& push_back(const std::string& library, const char* separator);

    template <typename ForwardRange>
      self_t& push_back(const ForwardRange& r, const char* sep);

    template <typename Iterable>
      self_t& push_back(const std::string& user_path,
                           const Iterable& default_path,
                           const char* sep);

    self_t& append(const path& p);

    self_t& push_front(const path& p);

    self_t& push_front(const std::string& library, const char* separator);
    self_t& prepend(const path& p);

    void push_current_directory(const path& p);
    void pop_current_directory();
    path current_directory_get() const;


    using strings_type = std::vector<std::string>;
    static strings_type split(const std::string& lib, const char* sep);



    path find_file(const path& file) const;

    std::ostream& dump(std::ostream& ostr) const;

    const path_list_type& search_path_get() const;
    path_list_type& search_path();

  private:
    void push_cwd();

    path find_in_search_path(const path& filename) const;

    path_list_type search_path_;

    path_list_type current_directory_;
  };

  std::ostream& operator<<(std::ostream& o, const file_library& l);

}

#include <vcsn/misc/file-library.hxx>