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/ tortoisehg/ util
settings.py
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# settings.py - TortoiseHg dialog settings library # # Copyright 2007 TK Soh <teekaysoh@gmail.com> # Copyright 2009 Steve Borho <steve@borho.org> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2, incorporated herein by reference. import os import cPickle from mercurial import util class SimpleMRUList(object): def __init__(self, size=10, reflist=[], compact=True): self._size = size self._list = reflist if compact: self.compact() def __iter__(self): for elem in self._list: yield elem def add(self, val): if val in self._list: self._list.remove(val) self._list.insert(0, val) self.flush() def get_size(self): return self._size def set_size(self, size): self._size = size self.flush() def flush(self): while len(self._list) > self._size: del self._list[-1] def compact(self): ''' remove duplicate in list ''' newlist = [] for v in self._list: if v not in newlist: newlist.append(v) self._list[:] = newlist class Settings(object): def __init__(self, appname, path=None): self._appname = appname self._data = {} self._path = path and path or self._get_path(appname) self._audit() self.read() def get_value(self, key, default=None, create=False): if key in self._data: return self._data[key] elif create: self._data[key] = default return default def set_value(self, key, value): self._data[key] = value def mrul(self, key, size=10): ''' wrapper method to create a most-recently-used (MRU) list ''' ls = self.get_value(key, [], True) ml = SimpleMRUList(size=size, reflist=ls) return ml def get_keys(self): return self._data.keys() def get_appname(self): return self._appname def read(self): self._data.clear() if os.path.exists(self._path): try: f = file(self._path, 'rb') self._data = cPickle.loads(f.read()) f.close() except Exception: pass def write(self): self._write(self._path, self._data) def _write(self, appname, data): s = cPickle.dumps(data) f = util.atomictempfile(appname, 'wb', None) f.write(s) try: f.rename() except OSError: pass # silently ignore these errors def _get_path(self, appname): if os.name == 'nt': try: import pywintypes try: from win32com.shell import shell, shellcon appdir = shell.SHGetSpecialFolderPath(0, shellcon.CSIDL_APPDATA) except pywintypes.com_error: appdir = os.environ['APPDATA'] except ImportError: appdir = os.environ['APPDATA'] return os.path.join(appdir, 'TortoiseHg', appname) else: home = os.path.expanduser('~') return os.path.join(home, '.tortoisehg', appname) def _audit(self): if os.path.exists(os.path.dirname(self._path)): return try: os.makedirs(os.path.dirname(self._path)) except OSError: pass # silently ignore these errors