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# Copyright (C) 2009, 2010  Roman Zimbelmann <romanz@lavabit.com>
#
# 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/>.

"""
This is the default ranger configuration file for filetype detection
and application handling.
"""

import ranger
from ranger.api.apps import *
from ranger.ext.get_executables import get_executables

class CustomApplications(Applications):
	def app_default(self, c):
		"""How to determine the default application?"""
		f = c.file

		if f.basename.lower() == 'makefile':
			return self.either(c, 'make')

		if f.extension is not None:
			if f.extension in ('pdf', ):
				return self.either(c, 'evince', 'zathura', 'apvlv')
			if f.extension == 'djvu':
				return self.either(c, 'evince')
			if f.extension in ('xml', ):
				return self.either(c, 'editor')
			if f.extension in ('html', 'htm', 'xhtml'):
				return self.either(c, 'firefox', 'opera', 'jumanji',
						'luakit', 'elinks', 'lynx')
			if f.extension == 'swf':
				return self.either(c, 'firefox', 'opera', 'jumanji', 'luakit')
			if f.extension == 'nes':
				return self.either(c, 'fceux')
			if f.extension in ('swc', 'smc'):
				return self.either(c, 'zsnes')
			if f.extension in ('odt', 'ods', 'odp', 'odf', 'odg',
					'doc', 'xls'):
				return self.either(c, 'libreoffice', 'soffice', 'ooffice')

		if f.mimetype is not None:
			if INTERPRETED_LANGUAGES.match(f.mimetype):
				return self.either(c, 'edit_or_run')

		if f.container:
			return self.either(c, 'aunpack', 'file_roller')

		if f.video or f.audio:
			if f.video:
				c.flags += 'd'
			return self.either(c, 'mplayer2', 'mplayer', 'smplayer', 'vlc',
					'totem')

		if f.image:
			if c.mode in (11, 12, 13, 14):
				return self.either(c, 'set_bg_with_feh')
			else:
				return self.either(c, 'sxiv', 'feh', 'eog', 'mirage')

		if f.document or f.filetype.startswith('text') or f.size == 0:
			return self.either(c, 'editor')

		# You can put this at the top of the function and mimeopen will
		# always be used for every file.
		return self.either(c, 'mimeopen')


	# ----------------------------------------- application definitions
	# Note: Trivial application definitions are at the bottom
	def app_pager(self, c):
		return 'less', '-R', c

	def app_editor(self, c):
		try:
			default_editor = os.environ['EDITOR']
		except KeyError:
			pass
		else:
			parts = default_editor.split()
			exe_name = os.path.basename(parts[0])
			if exe_name in get_executables():
				return tuple(parts) + tuple(c)

		return self.either(c, 'vim', 'emacs', 'nano')

	def app_edit_or_run(self, c):
		if c.mode is 1:
			return self.app_self(c)
		return self.app_editor(c)

	@depends_on('mplayer')
	def app_mplayer(self, c):
		if c.mode is 1:
			return 'mplayer', '-fs', c

		elif c.mode is 2:
			args = "mplayer -fs -sid 0 -vfm ffmpeg -lavdopts " \
					"lowres=1:fast:skiploopfilter=all:threads=8".split()
			args.extend(c)
			return args

		elif c.mode is 3:
			return 'mplayer', '-mixer', 'software', c

		else:
			return 'mplayer', c

	@depends_on('mplayer2')
	def app_mplayer2(self, c):
		args = list(self.app_mplayer(c))
		args[0] += '2'
		return args

	@depends_on('feh')
	def app_set_bg_with_feh(self, c):
		c.flags += 'd'
		arg = {11: '--bg-scale', 12: '--bg-tile', 13: '--bg-center',
				14: '--bg-fill'}
		if c.mode in arg:
			return 'feh', arg[c.mode], c.file.path
		return 'feh', arg[11], c.file.path

	@depends_on('feh')
	def app_feh(self, c):
		c.flags += 'd'
		if c.mode is 0 and len(c.files) is 1: # view all files in the cwd
			images = (f.basename for f in self.fm.env.cwd.files if f.image)
			return 'feh', '--start-at', c.file.basename, images
		return 'feh', c

	@depends_on('sxiv')
	def app_sxiv(self, c):
		c.flags = 'd' + c.flags
		if len(c.files) is 1:
			images = [f.basename for f in self.fm.env.cwd.files if f.image]
			try:
				position = images.index(c.file.basename) + 1
			except:
				return None
			return 'sxiv', '-n', str(position), images
		return 'sxiv', c

	@depends_on('aunpack')
	def app_aunpack(self, c):
		if c.mode is 0:
			c.flags += 'p'
			return 'aunpack', '-l', c.file.path
		return 'aunpack', c.file.path

	@depends_on('file-roller')
	def app_file_roller(self, c):
		c.flags += 'd'
		return 'file-roller', c.file.path

	@depends_on('make')
	def app_make(self, c):
		if c.mode is 0:
			return "make"
		if c.mode is 1:
			return "make", "install"
		if c.mode is 2:
			return "make", "clear"

	@depends_on('java')
	def app_java(self, c):
		def strip_extensions(file):
			if '.' in file.basename:
				return file.path[:file.path.index('.')]
			return file.path
		files_without_extensions = map(strip_extensions, c.files)
		return "java", files_without_extensions

	@depends_on('totem')
	def app_totem(self, c):
		if c.mode is 0:
			return "totem", c
		if c.mode is 1:
			return "totem", "--fullscreen", c

	@depends_on('mimeopen')
	def app_mimeopen(self, c):
		if c.mode is 0:
			return "mimeopen", c
		if c.mode is 1: 
			# Will ask user to select program
			# aka "Open with..."
			return "mimeopen", "--ask", c

# Often a programs invocation is trivial.  For example:
#    vim test.py readme.txt [...]
# This could be implemented like:
#    @depends_on("vim")
#    def app_vim(self, context):
#        return "vim", context
# Instead of creating such a generic function for each program, just add
# its name here and it will be automatically done for you.
CustomApplications.generic('vim', 'fceux', 'elinks', 'wine',
		'zsnes', 'javac')

# By setting flags='d', this programs will not block ranger's terminal:
CustomApplications.generic('opera', 'firefox', 'apvlv', 'evince',
		'zathura', 'gimp', 'mirage', 'eog', flags='d')

# What filetypes are recognized as scripts for interpreted languages?
# This regular expression is used in app_default()
INTERPRETED_LANGUAGES = re.compile(r'''
	^(text|application)/x-(
		haskell|perl|python|ruby|sh
	)$''', re.VERBOSE)