//
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// Copyright 2012 Christian Henning
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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#ifndef BOOST_GIL_IO_MAKE_SCANLINE_READER_HPP
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#define BOOST_GIL_IO_MAKE_SCANLINE_READER_HPP
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#include <boost/gil/detail/mp11.hpp>
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#include <boost/gil/io/get_reader.hpp>
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#include <type_traits>
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namespace boost { namespace gil {
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template <typename String, typename FormatTag>
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inline
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auto make_scanline_reader(String const& file_name, FormatTag const&,
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typename std::enable_if
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<
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mp11::mp_and
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<
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detail::is_supported_path_spec<String>,
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is_format_tag<FormatTag>
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>::value
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>::type* /*dummy*/ = nullptr)
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-> typename get_scanline_reader<String, FormatTag>::type
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{
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using device_t = typename get_read_device<String, FormatTag>::type;
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device_t device(
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detail::convert_to_native_string(file_name),
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typename detail::file_stream_device<FormatTag>::read_tag());
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return typename get_scanline_reader<String, FormatTag>::type(
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device, image_read_settings<FormatTag>());
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}
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template< typename FormatTag >
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inline
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typename get_scanline_reader< std::wstring
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, FormatTag
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>::type
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make_scanline_reader( const std::wstring& file_name
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, FormatTag const&
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)
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{
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const char* str = detail::convert_to_native_string( file_name );
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typename get_read_device< std::wstring
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, FormatTag
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>::type device( str
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, typename detail::file_stream_device< FormatTag >::read_tag()
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);
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delete[] str;
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return typename get_scanline_reader< std::wstring
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, FormatTag
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>::type( device
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, image_read_settings< FormatTag >()
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);
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}
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#ifdef BOOST_GIL_IO_ADD_FS_PATH_SUPPORT
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template< typename FormatTag >
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inline
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typename get_scanline_reader< std::wstring
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, FormatTag
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>::type
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make_scanline_reader( const filesystem::path& path
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, FormatTag const&
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)
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{
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return make_scanline_reader( path.wstring()
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, image_read_settings< FormatTag >()
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);
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}
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#endif // BOOST_GIL_IO_ADD_FS_PATH_SUPPORT
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template <typename Device, typename FormatTag>
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inline
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auto make_scanline_reader(Device& io_dev, FormatTag const&,
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typename std::enable_if
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<
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mp11::mp_and
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<
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detail::is_adaptable_input_device<FormatTag, Device>,
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is_format_tag<FormatTag>
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>::value
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>::type* /*dummy*/ = nullptr)
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-> typename get_scanline_reader<Device, FormatTag>::type
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{
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return make_scanline_reader(io_dev, image_read_settings<FormatTag>());
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}
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}} // namespace boost::gil
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#endif
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