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# -*- coding: utf-8 -*-
# Songwrite 3
# Copyright (C) 2007-2016 Jean-Baptiste LAMY -- jibalamy@free.fr
#
# This program 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; either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
import sys, os, os.path
import songwrite3.globdef as globdef
import songwrite3.model as model
PLUGINS = {}
class Plugin(object):
def __init__(self, name):
print("Registering %s plugin..." % name, file = sys.stderr)
self.name = name
PLUGINS[name] = self
def create_ui(self, app):
pass
EXPORT_FORMATS = []
class ExportPlugin(Plugin):
def __init__(self, format, exts, can_export_song = 1, can_export_songbook = 0):
self.format = format
self.exts = exts
self.can_export_song = can_export_song
self.can_export_songbook = can_export_songbook
EXPORT_FORMATS.append(format)
Plugin.__init__(self, "%s exporter" % format.lower())
def create_ui(self, app):
if self.can_export_song:
app.add_to_menu(app.export_menu, 0, _("Export to %s") % self.format + "..." * int(globdef.config.ASK_FILENAME_ON_EXPORT), self.on_menu_click, arg = app)
if self.can_export_songbook:
app.add_to_menu(app.export_songbook_menu, 0, _("Export songbook to %s") % self.format + "..." * int(globdef.config.ASK_FILENAME_ON_EXPORT), self.on_songbook_menu_click, arg = app)
def on_menu_click(self, widget, app):
if globdef.config.ASK_FILENAME_ON_EXPORT or (not app.filename):
filename = app.prompt_save_filename(self.exts, self.format)
else:
filename = app.filename.replace(".sw.xml", "") + "." + self.exts[0]
if filename: self.export_to(app.song, filename)
def on_songbook_menu_click(self, widget, app):
if globdef.config.ASK_FILENAME_ON_EXPORT or (not app.songbook.filename):
filename = app.prompt_save_filename(self.exts, self.format)
else:
filename = app.songbook.filename.replace(".sw.xml", "") + "." + self.exts[0]
if filename: self.export_to(app.songbook, filename)
def export_to(self, song, filename):
data = self.export_to_string(song)
if isinstance(data, bytes):
if filename == "-": sys.stdout.buffer.write(data)
else: open(filename, "wb").write(data)
else:
if filename == "-": print(data)
else: open(filename, "w").write(data)
def export_to_string(self, song): pass
IMPORT_FORMATS = []
class ImportPlugin(Plugin):
def __init__(self, format, exts, binary = False):
self.format = format
self.exts = exts
self.binary = binary
IMPORT_FORMATS.append(format)
Plugin.__init__(self, "%s importer" % format.lower())
def create_ui(self, app):
app.add_to_menu(app.import_menu, 0, _("Import from %s") % self.format + "...", self.on_menu_click, arg = app)
def on_menu_click(self, widget, app):
if app.check_save(): return
filename = app.prompt_open_filename(self.exts, self.format)
if filename:
song = self.import_from(filename)
app.set_song(song)
def import_from(self, filename):
if filename == "-":
return self.import_from_string(sys.stdin.read())
else:
if self.binary: s = open(filename, "rb").read()
else: s = open(filename ).read()
return self.import_from_string(s)
def import_from_string(self, data): pass
PLUGINS_VIEWS = {}
class ViewPlugin(Plugin):
def __init__(self, View, String, code_name, category):
PLUGINS_VIEWS[code_name] = View, String
Plugin.__init__(self, "%s view" % code_name)
if category: model.VIEWS[category].append(View)
def create_plugins_ui(app):
for plugin in PLUGINS.values(): plugin.create_ui(app)
def load_all_plugins():
plugins_dir = os.path.dirname(__file__)
for file in [
"songwrite",
"abc",
"texttab",
"midi",
"pdf",
"fingering",
"additional_instruments",
"lyre",
"chord",
"accordion",
]:
try:
__import__("songwrite3.plugins.%s" % file)
except:
print("Error while loading plugin 'songwrite3.plugins.%s'!" % file, file = sys.stderr)
sys.excepthook(*sys.exc_info())
print(file = sys.stderr)
def get_importer(format):
return PLUGINS["%s importer" % format.lower()]
def get_exporter(format):
return PLUGINS["%s exporter" % format.lower()]
def load_view(partition, attrs):
View, String = PLUGINS_VIEWS[attrs["type"]]
view = View(partition, "")
view.load_attrs(attrs)
return view, String
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