note description: "[ Buffer to detect file encoding according to leading characters. Characters read rather than BOM will be maitained and able be reused by other buffers. ]" date: "$Date$" revision: "$Revision$" class ENCODING_DETECTION_FILE_BUFFER inherit YY_FILE_BUFFER STRING_HANDLER BOM_ENCODING_DETECTOR create make_with_size feature -- Detection detect_file -- Detect the encoding in file, and make the buffer ready for parsing. local l_lead: STRING_8 buff: like content l_file: like file l_count: INTEGER do if not end_of_file then l_file := file compact_left -- A BOM has at most 4 bytes. create l_lead.make (4) l_lead.set_count (4) l_count := l_file.read_to_string (l_lead, 1, 4) if l_count > 0 then l_lead.set_count (l_count) detect (l_lead) buff := content if last_detection_successful then buff.fill_from_string (l_lead.substring (last_bom_count + 1, l_lead.count), 1) count := count + l_lead.count - last_bom_count else buff.fill_from_string (l_lead, 1) count := count + l_lead.count end buff.put (End_of_buffer_character, count + 1) buff.put (End_of_buffer_character, count + 2) end end end note copyright: "Copyright (c) 1984-2010, Eiffel Software" license: "GPL version 2 (see http://www.eiffel.com/licensing/gpl.txt)" licensing_options: "http://www.eiffel.com/licensing" copying: "[ This file is part of Eiffel Software's Eiffel Development Environment. Eiffel Software's Eiffel Development Environment is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2 of the License (available at the URL listed under "license" above). Eiffel Software's Eiffel Development Environment is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Eiffel Software's Eiffel Development Environment; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA ]" source: "[ Eiffel Software 5949 Hollister Ave., Goleta, CA 93117 USA Telephone 805-685-1006, Fax 805-685-6869 Website http://www.eiffel.com Customer support http://support.eiffel.com ]" end