forked from openlp/openlp
302 lines
14 KiB
Python
302 lines
14 KiB
Python
# -*- coding: utf-8 -*-
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# vim: autoindent shiftwidth=4 expandtab textwidth=120 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) 2008-2013 Raoul Snyman #
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# Portions copyright (c) 2008-2013 Tim Bentley, Gerald Britton, Jonathan #
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# Corwin, Samuel Findlay, Michael Gorven, Scott Guerrieri, Matthias Hub, #
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# Meinert Jordan, Armin Köhler, Erik Lundin, Edwin Lunando, Brian T. Meyer. #
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# Joshua Miller, Stevan Pettit, Andreas Preikschat, Mattias Põldaru, #
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# Christian Richter, Philip Ridout, Simon Scudder, Jeffrey Smith, #
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# Maikel Stuivenberg, Martin Thompson, Jon Tibble, Dave Warnock, #
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# Frode Woldsund, Martin Zibricky, Patrick Zimmermann #
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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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import re
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from openlp.core.lib import translate
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from openlp.plugins.songs.lib import VerseType
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from openlp.plugins.songs.lib import retrieve_windows_encoding, strip_rtf
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from songimport import SongImport
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RTF_STRIPPING_REGEX = re.compile(r'\{\\tx[^}]*\}')
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# regex: at least two newlines, can have spaces between them
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SLIDE_BREAK_REGEX = re.compile(r'\n *?\n[\n ]*')
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NUMBER_REGEX = re.compile(r'[0-9]+')
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NOTE_REGEX = re.compile(r'\(.*?\)')
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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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SongImport.__init__(self, manager, **kwargs)
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def doImport(self):
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# Open the DB and MB files if they exist
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import_source_mb = self.importSource.replace('.DB', '.MB')
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if not os.path.isfile(self.importSource):
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return
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if not os.path.isfile(import_source_mb):
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return
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db_size = os.path.getsize(self.importSource)
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if db_size < 0x800:
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return
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db_file = open(self.importSource, 'rb')
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self.memoFile = 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 = 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.memoFile.close()
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return
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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
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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.importWizard.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', 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', field_info, i * 2)
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field_descs.append(FieldDescEntry(field_name, field_type, field_size))
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self.setRecordStruct(field_descs)
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# Pick out the field description indexes we will need
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try:
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success = True
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fi_title = self.findField(u'Title')
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fi_author = self.findField(u'Author')
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fi_copy = self.findField(u'Copyright')
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fi_admin = self.findField(u'Administrator')
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fi_words = self.findField(u'Words')
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fi_ccli = self.findField(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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break
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raw_record = db_file.read(record_size)
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self.fields = self.recordStruct.unpack(raw_record)
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self.setDefaults()
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self.title = self.getField(fi_title)
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# Get remaining fields.
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copy = self.getField(fi_copy)
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admin = self.getField(fi_admin)
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ccli = self.getField(fi_ccli)
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authors = self.getField(fi_author)
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words = self.getField(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 += translate('SongsPlugin.EasyWorshipSongImport', 'Administered by %s') % admin
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if ccli:
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self.ccliNumber = 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.addAuthor(author_name.strip())
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if words:
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# Format the lyrics
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result = strip_rtf(words, self.encoding)
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if result is None:
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return
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words, self.encoding = result
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verse_type = VerseType.Tags[VerseType.Verse]
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for verse in SLIDE_BREAK_REGEX.split(words):
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verse = verse.strip()
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if not verse:
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continue
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verse_split = verse.split(u'\n', 1)
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first_line_is_tag = False
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# EW tags: verse, chorus, pre-chorus, bridge, tag,
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# intro, ending, slide
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for type in VerseType.Names+[u'tag', u'slide']:
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type = type.lower()
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ew_tag = verse_split[0].strip().lower()
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if ew_tag.startswith(type):
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verse_type = type[0]
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if type == u'tag' or type == u'slide':
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verse_type = VerseType.Tags[VerseType.Other]
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first_line_is_tag = True
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number_found = False
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# check if tag is followed by number and/or note
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if len(ew_tag) > len(type):
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match = NUMBER_REGEX.search(ew_tag)
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if match:
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number = match.group()
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verse_type += number
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number_found = True
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match = NOTE_REGEX.search(ew_tag)
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if match:
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self.comments += ew_tag + u'\n'
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if not number_found:
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verse_type += u'1'
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break
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self.addVerse(
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verse_split[-1].strip() \
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if first_line_is_tag else verse,
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verse_type)
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if len(self.comments) > 5:
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self.comments += unicode(translate('SongsPlugin.EasyWorshipSongImport',
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'\n[above are Song Tags with notes imported from EasyWorship]'))
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if self.stop_import_flag:
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break
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if not self.finish():
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self.logError(self.importSource)
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db_file.close()
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self.memoFile.close()
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def findField(self, field_name):
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return [i for i, x in enumerate(self.fieldDescs)
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if x.name == field_name][0]
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def setRecordStruct(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.recordStruct = struct.Struct(''.join(fsl))
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self.fieldDescs = field_descs
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def getField(self, field_desc_index):
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field = self.fields[field_desc_index]
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field_desc = self.fieldDescs[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 not field.rstrip('\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 = 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.memoFile.seek(block_start)
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memo_block_type, = struct.unpack('b', self.memoFile.read(1))
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if memo_block_type == 2:
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self.memoFile.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.memoFile.seek(11 + (5 * sub_block), os.SEEK_CUR)
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sub_block_start, = struct.unpack('B', self.memoFile.read(1))
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self.memoFile.seek(block_start + (sub_block_start * 16))
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else:
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return u''
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return self.memoFile.read(blob_size)
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else:
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return 0
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