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fscommands.py
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"""Project file system commands.
This modules implements file system operations used by rope. Different
version control systems can be supported by implementing the interface
provided by `FileSystemCommands` class. See `SubversionCommands` and
`MercurialCommands` for example.
"""
import os
import shutil
import subprocess
import rope.base.utils.pycompat as pycompat
try:
unicode
except NameError:
unicode = str
def create_fscommands(root):
dirlist = os.listdir(root)
commands = {'.hg': MercurialCommands,
'.svn': SubversionCommands,
'.git': GITCommands,
'_svn': SubversionCommands,
'_darcs': DarcsCommands}
for key in commands:
if key in dirlist:
try:
return commands[key](root)
except (ImportError, OSError):
pass
return FileSystemCommands()
class FileSystemCommands(object):
def create_file(self, path):
open(path, 'w').close()
def create_folder(self, path):
os.mkdir(path)
def move(self, path, new_location):
shutil.move(path, new_location)
def remove(self, path):
if os.path.isfile(path):
os.remove(path)
else:
shutil.rmtree(path)
def write(self, path, data):
file_ = open(path, 'wb')
try:
file_.write(data)
finally:
file_.close()
class SubversionCommands(object):
def __init__(self, *args):
self.normal_actions = FileSystemCommands()
import pysvn
self.client = pysvn.Client()
def create_file(self, path):
self.normal_actions.create_file(path)
self.client.add(path, force=True)
def create_folder(self, path):
self.normal_actions.create_folder(path)
self.client.add(path, force=True)
def move(self, path, new_location):
self.client.move(path, new_location, force=True)
def remove(self, path):
self.client.remove(path, force=True)
def write(self, path, data):
self.normal_actions.write(path, data)
class MercurialCommands(object):
def __init__(self, root):
self.hg = self._import_mercurial()
self.normal_actions = FileSystemCommands()
try:
self.ui = self.hg.ui.ui(
verbose=False, debug=False, quiet=True,
interactive=False, traceback=False, report_untrusted=False)
except:
self.ui = self.hg.ui.ui()
self.ui.setconfig('ui', 'interactive', 'no')
self.ui.setconfig('ui', 'debug', 'no')
self.ui.setconfig('ui', 'traceback', 'no')
self.ui.setconfig('ui', 'verbose', 'no')
self.ui.setconfig('ui', 'report_untrusted', 'no')
self.ui.setconfig('ui', 'quiet', 'yes')
self.repo = self.hg.hg.repository(self.ui, root)
def _import_mercurial(self):
import mercurial.commands
import mercurial.hg
import mercurial.ui
return mercurial
def create_file(self, path):
self.normal_actions.create_file(path)
self.hg.commands.add(self.ui, self.repo, path)
def create_folder(self, path):
self.normal_actions.create_folder(path)
def move(self, path, new_location):
self.hg.commands.rename(self.ui, self.repo, path,
new_location, after=False)
def remove(self, path):
self.hg.commands.remove(self.ui, self.repo, path)
def write(self, path, data):
self.normal_actions.write(path, data)
class GITCommands(object):
def __init__(self, root):
self.root = root
self._do(['version'])
self.normal_actions = FileSystemCommands()
def create_file(self, path):
self.normal_actions.create_file(path)
self._do(['add', self._in_dir(path)])
def create_folder(self, path):
self.normal_actions.create_folder(path)
def move(self, path, new_location):
self._do(['mv', self._in_dir(path), self._in_dir(new_location)])
def remove(self, path):
self._do(['rm', self._in_dir(path)])
def write(self, path, data):
# XXX: should we use ``git add``?
self.normal_actions.write(path, data)
def _do(self, args):
_execute(['git'] + args, cwd=self.root)
def _in_dir(self, path):
if path.startswith(self.root):
return path[len(self.root) + 1:]
return self.root
class DarcsCommands(object):
def __init__(self, root):
self.root = root
self.normal_actions = FileSystemCommands()
def create_file(self, path):
self.normal_actions.create_file(path)
self._do(['add', path])
def create_folder(self, path):
self.normal_actions.create_folder(path)
self._do(['add', path])
def move(self, path, new_location):
self._do(['mv', path, new_location])
def remove(self, path):
self.normal_actions.remove(path)
def write(self, path, data):
self.normal_actions.write(path, data)
def _do(self, args):
_execute(['darcs'] + args, cwd=self.root)
def _execute(args, cwd=None):
process = subprocess.Popen(args, cwd=cwd, stdout=subprocess.PIPE)
process.wait()
return process.returncode
def unicode_to_file_data(contents, encoding=None):
if not isinstance(contents, unicode):
return contents
if encoding is None:
encoding = read_str_coding(contents)
if encoding is not None:
return contents.encode(encoding)
try:
return contents.encode()
except UnicodeEncodeError:
return contents.encode('utf-8')
def file_data_to_unicode(data, encoding=None):
result = _decode_data(data, encoding)
if '\r' in result:
result = result.replace('\r\n', '\n').replace('\r', '\n')
return result
def _decode_data(data, encoding):
if isinstance(data, unicode):
return data
if encoding is None:
encoding = read_str_coding(data)
if encoding is None:
# there is no encoding tip, we need to guess.
# PEP263 says that "encoding not explicitly defined" means it is ascii,
# but we will use utf8 instead since utf8 fully covers ascii and btw is
# the only non-latin sane encoding.
encoding = 'utf-8'
try:
return data.decode(encoding)
except (UnicodeError, LookupError):
# fallback to latin1: it should never fail
return data.decode('latin1')
def read_file_coding(path):
file = open(path, 'b')
count = 0
result = []
while True:
current = file.read(10)
if not current:
break
count += current.count('\n')
result.append(current)
file.close()
return _find_coding(''.join(result))
def read_str_coding(source):
if type(source) == bytes:
newline = b'\n'
else:
newline = '\n'
#try:
# source = source.decode("utf-8")
#except AttributeError:
# pass
try:
first = source.index(newline) + 1
second = source.index(newline, first) + 1
except ValueError:
second = len(source)
return _find_coding(source[:second])
def _find_coding(text):
if isinstance(text, pycompat.str):
text = text.encode('utf-8')
coding = b'coding'
to_chr = chr if pycompat.PY3 else lambda x: x
try:
start = text.index(coding) + len(coding)
if text[start] not in b'=:':
return
start += 1
while start < len(text) and to_chr(text[start]).isspace():
start += 1
end = start
while end < len(text):
c = text[end]
if not to_chr(c).isalnum() and c not in b'-_':
break
end += 1
result = text[start:end]
if isinstance(result, bytes):
result = result.decode('utf-8')
return result
except ValueError:
pass