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import imp
import os
import ast
import mailcap
import codecs
import logging
from ConfigParser import SafeConfigParser
class FallbackConfigParser(SafeConfigParser):
""":class:`~ConfigParser.SafeConfigParser` that allows fallback values"""
def __init__(self):
SafeConfigParser.__init__(self)
self.optionxform = lambda x: x
def get(self, section, option, fallback=None, *args, **kwargs):
"""get a config option
:param section: section name
:type section: str
:param option: option key
:type option: str
:param fallback: the value to fall back if option undefined
:type fallback: str
"""
if SafeConfigParser.has_option(self, section, option):
return SafeConfigParser.get(self, section, option, *args, **kwargs)
return fallback
def getstringlist(self, section, option, **kwargs):
"""directly parses a config value into a list of strings"""
value = self.get(section, option, **kwargs)
return [s.strip() for s in value.split(',') if s.strip()]
class AlotConfigParser(FallbackConfigParser):
""":class:`FallbackConfigParser` for alots config."""
def __init__(self):
FallbackConfigParser.__init__(self)
self.hooks = None
def get_hook(self, key):
"""return hook (`callable`) identified by `key`"""
if self.hooks:
if key in self.hooks.__dict__:
return self.hooks.__dict__[key]
return None
def read(self, file):
if not os.path.isfile(file):
return
SafeConfigParser.readfp(self, codecs.open(file, "r", "utf8"))
if self.has_option('general', 'hooksfile'):
hf = os.path.expanduser(self.get('general', 'hooksfile'))
if hf is not None:
try:
self.hooks = imp.load_source('hooks', hf)
except:
logging.debug('unable to load hooks file:%s' % hf)
# fix quoted keys / values
for section in self.sections():
for key, value in self.items(section):
if value and value[0] in "\"'":
value = ast.literal_eval(value)
transformed_key = False
if key[0] in "\"'":
transformed_key = ast.literal_eval(key)
elif key == 'colon':
transformed_key = ':'
if transformed_key:
self.remove_option(section, key)
self.set(section, transformed_key, value)
else:
self.set(section, key, value)
def get_palette(self):
"""parse the sections '1c-theme', '16c-theme' and '256c-theme'
into an urwid compatible colour palette.
:returns: a palette
:rtype: list
"""
mode = self.getint('general', 'colourmode')
ms = "%dc-theme" % mode
names = self.options(ms)
if mode > 2:
names = set([s[:-3] for s in names])
p = list()
for attr in names:
nf = self.get('16c-theme', attr + '_fg', fallback='default')
nb = self.get('16c-theme', attr + '_bg', fallback='default')
m = self.get('1c-theme', attr, fallback='default')
hf = self.get('256c-theme', attr + '_fg', fallback='default')
hb = self.get('256c-theme', attr + '_bg', fallback='default')
p.append((attr, nf, nb, m, hf, hb))
if attr.startswith('tag_') and attr + '_focus' not in names:
nb = self.get('16c-theme', 'tag_focus_bg',
fallback='default')
hb = self.get('256c-theme', 'tag_focus_bg',
fallback='default')
p.append((attr + '_focus', nf, nb, m, hf, hb))
return p
def get_tagattr(self, tag, focus=False):
"""
look up attribute string to use for a given tagstring
:param tag: tagstring to look up
:type tag: str
:param focus: return the 'focussed' attribute
:type focus: bool
"""
mode = self.getint('general', 'colourmode')
base = 'tag_%s' % tag
if mode == 2:
if self.get('1c-theme', base):
return 'tag_%s' % tag
elif mode == 16:
has_fg = self.get('16c-theme', base + '_fg')
has_bg = self.get('16c-theme', base + '_bg')
if has_fg or has_bg:
if focus:
return base + '_focus'
else:
return base
else: # highcolour
has_fg = self.get('256c-theme', base + '_fg')
has_bg = self.get('256c-theme', base + '_bg')
if has_fg or has_bg:
if focus:
return base + '_focus'
else:
return base
if focus:
return 'tag_focus'
return 'tag'
def get_mapping(self, mode, key):
"""look up keybiding from `MODE-maps` sections
:param mode: mode identifier
:type mode: str
:param key: urwid-style key identifier
:type key: str
:returns: a command line to be applied upon keypress
:rtype: str
"""
cmdline = self.get(mode + '-maps', key)
if not cmdline:
cmdline = self.get('global-maps', key)
return cmdline
config = AlotConfigParser()
config.read(os.path.join(os.path.dirname(__file__), 'defaults', 'alot.rc'))
notmuchconfig = FallbackConfigParser()
notmuchconfig.read(os.path.join(os.path.dirname(__file__),
'defaults',
'notmuch.rc'))
mailcaps = mailcap.getcaps()
def get_mime_handler(mime_type, key='view', interactive=True):
"""
get shellcomand defined in the users `mailcap` as handler for files of
given `mime_type`.
:param mime_type: file type
:type mime_type: str
:param key: identifies one of possibly many commands for this type by
naming the intended usage, e.g. 'edit' or 'view'. Defaults
to 'view'.
:type key: str
:param interactive: choose the "interactive session" handler rather than
the "print to stdout and immediately return" handler
:type interactive: bool
"""
if interactive:
mc_tuple = mailcap.findmatch(mailcaps,
mime_type,
key=key)
else:
mc_tuple = mailcap.findmatch(mailcaps,
mime_type,
key='copiousoutput')
if mc_tuple:
if mc_tuple[1]:
return mc_tuple[1][key]
else:
return None
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