forked from openlp/openlp
355 lines
15 KiB
Python
355 lines
15 KiB
Python
# -*- coding: utf-8 -*-
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# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4
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###############################################################################
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# OpenLP - Open Source Lyrics Projection #
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# --------------------------------------------------------------------------- #
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# Copyright (c) 2008-2011 Raoul Snyman #
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# Portions copyright (c) 2008-2011 Tim Bentley, Jonathan Corwin, Michael #
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# Gorven, Scott Guerrieri, Meinert Jordan, Andreas Preikschat, Christian #
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# Richter, Philip Ridout, Maikel Stuivenberg, Martin Thompson, Jon Tibble, #
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# Carsten Tinggaard, Frode Woldsund, Jeffrey Smith #
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# --------------------------------------------------------------------------- #
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# This program is free software; you can redistribute it and/or modify it #
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# under the terms of the GNU General Public License as published by the Free #
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# Software Foundation; version 2 of the License. #
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# #
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# This program is distributed in the hope that it will be useful, but WITHOUT #
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for #
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# more details. #
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# #
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# You should have received a copy of the GNU General Public License along #
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# with this program; if not, write to the Free Software Foundation, Inc., 59 #
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# Temple Place, Suite 330, Boston, MA 02111-1307 USA #
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###############################################################################
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"""
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The :mod:`ewimport` module provides the functionality for importing
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EasyWorship song databases into the current installation database.
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"""
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import os
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import struct
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from openlp.core.lib import translate
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from openlp.core.ui.wizard import WizardStrings
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from openlp.plugins.songs.lib import retrieve_windows_encoding
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from songimport import SongImport
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def strip_rtf(blob, encoding):
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depth = 0
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control = False
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clear_text = []
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control_word = []
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for c in blob:
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if control:
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# for delimiters, set control to False
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if c == '{':
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if len(control_word) > 0:
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depth += 1
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control = False
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elif c == '}':
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if len(control_word) > 0:
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depth -= 1
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control = False
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elif c == '\\':
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new_control = (len(control_word) > 0)
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control = False
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elif c.isspace():
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control = False
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else:
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control_word.append(c)
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if len(control_word) == 3 and control_word[0] == '\'':
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control = False
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if not control:
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if len(control_word) == 0:
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if c == '{' or c == '}' or c == '\\':
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clear_text.append(c)
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else:
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control_str = ''.join(control_word)
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if control_str == 'par' or control_str == 'line':
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clear_text.append(u'\n')
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elif control_str == 'tab':
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clear_text.append(u'\t')
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# Prefer the encoding specified by the RTF data to that
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# specified by the Paradox table header
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# West European encoding
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elif control_str == 'fcharset0':
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encoding = u'cp1252'
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# Greek encoding
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elif control_str == 'fcharset161':
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encoding = u'cp1253'
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# Turkish encoding
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elif control_str == 'fcharset162':
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encoding = u'cp1254'
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# Vietnamese encoding
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elif control_str == 'fcharset163':
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encoding = u'cp1258'
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# Hebrew encoding
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elif control_str == 'fcharset177':
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encoding = u'cp1255'
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# Arabic encoding
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elif control_str == 'fcharset178':
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encoding = u'cp1256'
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# Baltic encoding
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elif control_str == 'fcharset186':
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encoding = u'cp1257'
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# Cyrillic encoding
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elif control_str == 'fcharset204':
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encoding = u'cp1251'
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# Thai encoding
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elif control_str == 'fcharset222':
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encoding = u'cp874'
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# Central+East European encoding
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elif control_str == 'fcharset238':
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encoding = u'cp1250'
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elif control_str[0] == '\'':
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s = chr(int(control_str[1:3], 16))
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clear_text.append(s.decode(encoding))
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del control_word[:]
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if c == '\\' and new_control:
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control = True
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elif c == '{':
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depth += 1
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elif c == '}':
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depth -= 1
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elif depth > 2:
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continue
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elif c == '\n' or c == '\r':
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continue
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elif c == '\\':
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control = True
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else:
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clear_text.append(c)
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return u''.join(clear_text)
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class FieldDescEntry:
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def __init__(self, name, type, size):
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self.name = name
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self.type = type
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self.size = size
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class EasyWorshipSongImport(SongImport):
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"""
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The :class:`EasyWorshipSongImport` class provides OpenLP with the
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ability to import EasyWorship song files.
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"""
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def __init__(self, manager, **kwargs):
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self.import_source = kwargs[u'filename']
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SongImport.__init__(self, manager)
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def do_import(self):
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# Open the DB and MB files if they exist
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import_source_mb = self.import_source.replace('.DB', '.MB')
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if not os.path.isfile(self.import_source):
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return False
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if not os.path.isfile(import_source_mb):
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return False
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db_size = os.path.getsize(self.import_source)
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if db_size < 0x800:
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return False
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db_file = open(self.import_source, 'rb')
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self.memo_file = open(import_source_mb, 'rb')
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# Don't accept files that are clearly not paradox files
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record_size, header_size, block_size, first_block, num_fields \
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= struct.unpack('<hhxb8xh17xh', db_file.read(35))
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if header_size != 0x800 or block_size < 1 or block_size > 4:
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db_file.close()
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self.memo_file.close()
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return False
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# Take a stab at how text is encoded
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self.encoding = u'cp1252'
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db_file.seek(106)
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code_page, = struct.unpack('<h', db_file.read(2))
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if code_page == 852:
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self.encoding = u'cp1250'
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# The following codepage to actual encoding mappings have not been
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# observed, but merely guessed. Actual example files are needed.
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elif code_page == 737:
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self.encoding = u'cp1253'
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elif code_page == 775:
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self.encoding = u'cp1257'
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elif code_page == 855:
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self.encoding = u'cp1251'
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elif code_page == 857:
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self.encoding = u'cp1254'
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elif code_page == 866:
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self.encoding = u'cp1251'
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elif code_page == 869:
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self.encoding = u'cp1253'
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elif code_page == 862:
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self.encoding = u'cp1255'
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elif code_page == 874:
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self.encoding = u'cp874'
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self.encoding = retrieve_windows_encoding(self.encoding)
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if not self.encoding:
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return False
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# There does not appear to be a _reliable_ way of getting the number
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# of songs/records, so let's use file blocks for measuring progress.
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total_blocks = (db_size - header_size) / (block_size * 1024)
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self.import_wizard.progressBar.setMaximum(total_blocks)
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# Read the field description information
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db_file.seek(120)
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field_info = db_file.read(num_fields * 2)
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db_file.seek(4 + (num_fields * 4) + 261, os.SEEK_CUR)
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field_names = db_file.read(header_size - db_file.tell()).split('\0',
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num_fields)
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field_names.pop()
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field_descs = []
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for i, field_name in enumerate(field_names):
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field_type, field_size = struct.unpack_from('BB',
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field_info, i * 2)
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field_descs.append(FieldDescEntry(field_name, field_type,
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field_size))
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self.set_record_struct(field_descs)
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# Pick out the field description indexes we will need
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success = True
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try:
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fi_title = self.find_field(u'Title')
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fi_author = self.find_field(u'Author')
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fi_copy = self.find_field(u'Copyright')
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fi_admin = self.find_field(u'Administrator')
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fi_words = self.find_field(u'Words')
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fi_ccli = self.find_field(u'Song Number')
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except IndexError:
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# This is the wrong table
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success = False
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# Loop through each block of the file
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cur_block = first_block
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while cur_block != 0 and success:
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db_file.seek(header_size + ((cur_block - 1) * 1024 * block_size))
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cur_block, rec_count = struct.unpack('<h2xh', db_file.read(6))
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rec_count = (rec_count + record_size) / record_size
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# Loop through each record within the current block
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for i in range(rec_count):
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if self.stop_import_flag:
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success = False
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break
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raw_record = db_file.read(record_size)
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self.fields = self.record_struct.unpack(raw_record)
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self.set_defaults()
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# Get title and update progress bar message
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title = self.get_field(fi_title)
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if title:
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self.import_wizard.incrementProgressBar(
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WizardStrings.ImportingType % title, 0)
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self.title = title
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# Get remaining fields
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copy = self.get_field(fi_copy)
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admin = self.get_field(fi_admin)
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ccli = self.get_field(fi_ccli)
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authors = self.get_field(fi_author)
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words = self.get_field(fi_words)
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# Set the SongImport object members
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if copy:
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self.copyright = copy
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if admin:
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if copy:
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self.copyright += u', '
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self.copyright += \
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unicode(translate('SongsPlugin.ImportWizardForm',
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'Administered by %s')) % admin
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if ccli:
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self.ccli_number = ccli
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if authors:
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# Split up the authors
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author_list = authors.split(u'/')
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if len(author_list) < 2:
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author_list = authors.split(u';')
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if len(author_list) < 2:
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author_list = authors.split(u',')
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for author_name in author_list:
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self.add_author(author_name.strip())
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if words:
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# Format the lyrics
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words = strip_rtf(words, self.encoding)
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for verse in words.split(u'\n\n'):
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self.add_verse(verse.strip(), u'V')
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if self.stop_import_flag:
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success = False
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break
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self.finish()
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if not self.stop_import_flag:
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self.import_wizard.incrementProgressBar(u'')
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db_file.close()
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self.memo_file.close()
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return success
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def find_field(self, field_name):
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return [i for i, x in enumerate(self.field_descs) \
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if x.name == field_name][0]
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def set_record_struct(self, field_descs):
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# Begin with empty field struct list
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fsl = ['>']
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for field_desc in field_descs:
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if field_desc.type == 1:
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# string
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fsl.append('%ds' % field_desc.size)
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elif field_desc.type == 3:
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# 16-bit int
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fsl.append('H')
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elif field_desc.type == 4:
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# 32-bit int
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fsl.append('I')
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elif field_desc.type == 9:
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# Logical
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fsl.append('B')
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elif field_desc.type == 0x0c:
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# Memo
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fsl.append('%ds' % field_desc.size)
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elif field_desc.type == 0x0d:
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# Blob
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fsl.append('%ds' % field_desc.size)
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elif field_desc.type == 0x15:
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# Timestamp
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fsl.append('Q')
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else:
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fsl.append('%ds' % field_desc.size)
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self.record_struct = struct.Struct(''.join(fsl))
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self.field_descs = field_descs
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def get_field(self, field_desc_index):
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field = self.fields[field_desc_index]
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field_desc = self.field_descs[field_desc_index]
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# Return None in case of 'blank' entries
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if isinstance(field, str):
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if len(field.rstrip('\0')) == 0:
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return None
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elif field == 0:
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return None
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# Format the field depending on the field type
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if field_desc.type == 1:
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# string
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return field.rstrip('\0').decode(self.encoding)
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elif field_desc.type == 3:
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# 16-bit int
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return field ^ 0x8000
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elif field_desc.type == 4:
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# 32-bit int
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return field ^ 0x80000000
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elif field_desc.type == 9:
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# Logical
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return (field ^ 0x80 == 1)
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elif field_desc.type == 0x0c or field_desc.type == 0x0d:
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# Memo or Blob
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block_start, blob_size = \
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struct.unpack_from('<II', field, len(field)-10)
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sub_block = block_start & 0xff
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block_start &= ~0xff
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self.memo_file.seek(block_start)
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memo_block_type, = struct.unpack('b', self.memo_file.read(1))
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if memo_block_type == 2:
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self.memo_file.seek(8, os.SEEK_CUR)
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elif memo_block_type == 3:
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if sub_block > 63:
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return u''
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self.memo_file.seek(11 + (5 * sub_block), os.SEEK_CUR)
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sub_block_start, = struct.unpack('B', self.memo_file.read(1))
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self.memo_file.seek(block_start + (sub_block_start * 16))
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else:
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return u''
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return self.memo_file.read(blob_size)
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else:
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return 0
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