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from . import BAD_INFO
from .file import File
from .fsobject import FileSystemObject as SuperClass
from ranger.shared import SettingsAware
import ranger.fsobject
def sort_by_basename(path):
"""returns path.basename (for sorting)"""
return path.basename
def sort_by_directory(path):
"""returns 0 if path is a directory, otherwise 1 (for sorting)"""
return 1 - int( isinstance( path, Directory ) )
class NoDirectoryGiven(Exception):
pass
class Directory(SuperClass, SettingsAware):
enterable = False
loading = False
filenames = None
files = None
filter = None
pointed_index = None
pointed_file = None
scroll_begin = 0
scroll_offset = 0
old_show_hidden = None
old_directories_first = None
def __init__(self, path):
from os.path import isfile
if isfile(path):
raise NoDirectoryGiven()
SuperClass.__init__(self, path)
# to find out if something has changed:
self.old_show_hidden = self.settings.show_hidden
self.old_directories_first = self.settings.directories_first
self.load_progress = None
def load_bit_by_bit(self):
"""Loads the contents of the directory. Use this sparingly since
it takes rather long.
"""
from os.path import join, isdir, basename
from os import listdir
self.load_if_outdated()
yield
if self.exists and self.runnable:
filenames = []
for fname in listdir(self.path):
if not self.settings.show_hidden and fname[0] == '.':
continue
if isinstance(self.filter, str) and self.filter in fname:
continue
filenames.append(join(self.path, fname))
self.scroll_offset = 0
self.filenames = filenames
self.infostring = ' %d' % len(self.filenames) # update the infostring
yield
files = []
for name in self.filenames:
if isdir(name):
f = Directory(name)
else:
f = File(name)
f.load()
files.append(f)
yield
self.files = files
self.old_directories_first = None
if len(self.files) > 0:
if self.pointed_file is not None:
self.move_pointer_to_file_path(self.pointed_file)
else:
self.filenames = None
self.files = None
self.infostring = BAD_INFO
self.content_loaded = True
self.loading = False
yield
def load_content(self, schedule=False):
"""Loads the contents of the directory. Use this sparingly since
it takes rather long.
"""
self.load_once()
if schedule is None:
schedule = self.size > 30
if not self.loading:
if schedule and self.fm:
self.loading = True
self.fm.loader.add(self)
else:
for _ in self.load_bit_by_bit():
pass
def sort(self):
"""Sort the containing files"""
if self.files is None:
return
old_pointed_file = self.pointed_file
self.files.sort(key = sort_by_basename)
if self.settings.directories_first:
self.files.sort(key = sort_by_directory)
if self.pointed_index is not None:
self.move_pointer_to_file_path(old_pointed_file)
else:
self.correct_pointer()
self.old_directories_first = self.settings.directories_first
def sort_if_outdated(self):
"""Sort the containing files if they are outdated"""
if self.old_directories_first != self.settings.directories_first:
self.sort()
# Notice: fm.env.cf should always point to the current file. If you
# modify the current directory with this function, make sure
# to update fm.env.cf aswell.
def move_pointer(self, relative=0, absolute=None):
"""Move the index pointer"""
if self.empty(): return
i = self.pointed_index
if isinstance(absolute, int):
if absolute < 0:
absolute = len(self.files) + absolute
i = absolute
if isinstance(relative, int):
i += relative
self.pointed_index = i
self.correct_pointer()
return self.pointed_file
def move_pointer_to_file_path(self, path):
"""Move the index pointer to the index of the file object
with the given path.
"""
if path is None: return
try: path = path.path
except AttributeError: pass
self.load_content_once()
if self.empty(): return
i = 0
for f in self.files:
if f.path == path:
self.move_pointer(absolute = i)
return True
i += 1
return False
def search(self, arg, direction = 1):
"""Search for a regular expression"""
if self.empty() or arg is None:
return False
elif hasattr(arg, 'search'):
fnc = lambda x: arg.search(x.basename)
else:
fnc = lambda x: arg in x.basename
length = len(self)
if direction > 0:
generator = ((self.pointed_index + (x + 1)) % length for x in range(length-1))
else:
generator = ((self.pointed_index - (x + 1)) % length for x in range(length-1))
for i in generator:
_file = self.files[i]
if fnc(_file):
self.pointed_index = i
self.pointed_file = _file
return True
return False
def correct_pointer(self):
"""make sure the pointer is in the valid range of:
0:len(self.files)-1 (or None if directory is empty.)
"""
if self.files is None or len(self.files) == 0:
self.pointed_index = None
self.pointed_file = None
else:
i = self.pointed_index
if i is None: i = 0
if i >= len(self.files): i = len(self.files) - 1
if i < 0: i = 0
self.pointed_index = i
self.pointed_file = self[i]
def load_content_once(self, *a, **k):
"""Load the contents of the directory if not done yet"""
if not self.content_loaded:
self.load_content(*a, **k)
return True
return False
def load_content_if_outdated(self, *a, **k):
"""Load the contents of the directory if it's
outdated or not done yet
"""
if self.load_content_once(*a, **k): return True
if self.old_show_hidden != self.settings.show_hidden:
self.old_show_hidden = self.settings.show_hidden
self.load_content(*a, **k)
return True
import os
real_mtime = os.stat(self.path).st_mtime
cached_mtime = self.stat.st_mtime
if real_mtime != cached_mtime:
self.load_content()
return True
return False
def empty(self):
"""Is the directory empty?"""
return self.files is None or len(self.files) == 0
def __nonzero__(self):
"""Always True"""
return True
def __len__(self):
"""The number of containing files"""
if not self.accessible: raise ranger.fsobject.NotLoadedYet()
return len(self.files)
def __getitem__(self, key):
"""Get the file by its index"""
if not self.accessible: raise ranger.fsobject.NotLoadedYet()
return self.files[key]
def __eq__(self, other):
"""Check for equality of the directories paths"""
return isinstance(other, Directory) and self.path == other.path
def __neq__(self, other):
"""Check for inequality of the directories paths"""
return not self.__eq__(other)
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