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# Copyright (C) 2004, 2005 Aaron Bentley
# <aaron@aaronbentley.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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import cmd
from itertools import chain
import os
try:
import readline
except ImportError:
_has_readline = False
else:
_has_readline = True
import shlex
import stat
import string
import sys
from bzrlib import osutils, trace
from bzrlib.branch import Branch
from bzrlib.config import config_dir, ensure_config_dir_exists
from bzrlib.commands import get_cmd_object, all_command_names, get_alias
from bzrlib.errors import BzrError
from bzrlib.workingtree import WorkingTree
import terminal
SHELL_BLACKLIST = set(['rm', 'ls'])
COMPLETION_BLACKLIST = set(['shell'])
class BlackListedCommand(BzrError):
def __init__(self, command):
BzrError.__init__(self, "The command %s is blacklisted for shell use" %
command)
class CompletionContext(object):
def __init__(self, text, command=None, prev_opt=None, arg_pos=None):
self.text = text
self.command = command
self.prev_opt = prev_opt
self.arg_pos = None
def get_completions(self):
try:
return self.get_completions_or_raise()
except Exception, e:
print e, type(e)
return []
def get_option_completions(self):
try:
command_obj = get_cmd_object(self.command)
except BzrError:
return []
opts = [o+" " for o in iter_opt_completions(command_obj)]
return list(filter_completions(opts, self.text))
def get_completions_or_raise(self):
if self.command is None:
if '/' in self.text:
iter = iter_executables(self.text)
else:
iter = (c+" " for c in iter_command_names() if
c not in COMPLETION_BLACKLIST)
return list(filter_completions(iter, self.text))
if self.prev_opt is None:
completions = self.get_option_completions()
if self.command == "cd":
iter = iter_dir_completions(self.text)
completions.extend(list(filter_completions(iter, self.text)))
else:
iter = iter_file_completions(self.text)
completions.extend(filter_completions(iter, self.text))
return completions
class PromptCmd(cmd.Cmd):
def __init__(self):
cmd.Cmd.__init__(self)
self.prompt = "bzr> "
try:
self.tree = WorkingTree.open_containing('.')[0]
except:
self.tree = None
self.set_title()
self.set_prompt()
self.identchars += '-'
ensure_config_dir_exists()
self.history_file = osutils.pathjoin(config_dir(), 'shell-history')
whitespace = ''.join(c for c in string.whitespace if c < chr(127))
if _has_readline:
readline.set_completer_delims(whitespace)
if os.access(self.history_file, os.R_OK) and \
os.path.isfile(self.history_file):
readline.read_history_file(self.history_file)
self.cwd = os.getcwd()
def write_history(self):
if _has_readline:
readline.write_history_file(self.history_file)
def do_quit(self, args):
self.write_history()
raise StopIteration
def do_exit(self, args):
self.do_quit(args)
def do_EOF(self, args):
print
self.do_quit(args)
def postcmd(self, line, bar):
self.set_title()
self.set_prompt()
def set_prompt(self):
if self.tree is not None:
try:
prompt_data = (self.tree.branch.nick, self.tree.branch.revno(),
self.tree.relpath('.'))
prompt = " %s:%d/%s" % prompt_data
except:
prompt = ""
else:
prompt = ""
self.prompt = "bzr%s> " % prompt
def set_title(self, command=None):
try:
b = Branch.open_containing('.')[0]
version = "%s:%d" % (b.nick, b.revno())
except:
version = "[no version]"
if command is None:
command = ""
sys.stdout.write(terminal.term_title("bzr %s %s" % (command, version)))
def do_cd(self, line):
if line == "":
line = "~"
line = os.path.expanduser(line)
if os.path.isabs(line):
newcwd = line
else:
newcwd = self.cwd+'/'+line
newcwd = os.path.normpath(newcwd)
try:
os.chdir(newcwd)
self.cwd = newcwd
except Exception, e:
print e
try:
self.tree = WorkingTree.open_containing(".")[0]
except:
self.tree = None
def do_help(self, line):
self.default("help "+line)
def default(self, line):
try:
args = shlex.split(line)
except ValueError, e:
print 'Parse error:', e
return
alias_args = get_alias(args[0])
if alias_args is not None:
args[0] = alias_args.pop(0)
commandname = args.pop(0)
for char in ('|', '<', '>'):
commandname = commandname.split(char)[0]
if commandname[-1] in ('|', '<', '>'):
commandname = commandname[:-1]
try:
if commandname in SHELL_BLACKLIST:
raise BlackListedCommand(commandname)
cmd_obj = get_cmd_object(commandname)
except (BlackListedCommand, BzrError):
return os.system(line)
try:
is_qbzr = cmd_obj.__module__.startswith('bzrlib.plugins.qbzr.')
if too_complicated(line) or is_qbzr:
return os.system("bzr "+line)
else:
return (cmd_obj.run_argv_aliases(args, alias_args) or 0)
except BzrError, e:
trace.log_exception_quietly()
print e
except KeyboardInterrupt, e:
print "Interrupted"
except Exception, e:
trace.log_exception_quietly()
print "Unhandled error:\n%s" % (e)
def completenames(self, text, line, begidx, endidx):
return CompletionContext(text).get_completions()
def completedefault(self, text, line, begidx, endidx):
"""Perform completion for native commands.
:param text: The text to complete
:type text: str
:param line: The entire line to complete
:type line: str
:param begidx: The start of the text in the line
:type begidx: int
:param endidx: The end of the text in the line
:type endidx: int
"""
(cmd, args, foo) = self.parseline(line)
if cmd == "bzr":
cmd = None
return CompletionContext(text, command=cmd).get_completions()
def run_shell(directory=None):
try:
if not directory is None:
os.chdir(directory)
prompt = PromptCmd()
while True:
try:
try:
prompt.cmdloop()
except KeyboardInterrupt:
print
finally:
prompt.write_history()
except StopIteration:
pass
def iter_opt_completions(command_obj):
for option_name, option in command_obj.options().items():
yield "--" + option_name
short_name = option.short_name()
if short_name:
yield "-" + short_name
def iter_file_completions(arg, only_dirs = False):
"""Generate an iterator that iterates through filename completions.
:param arg: The filename fragment to match
:type arg: str
:param only_dirs: If true, match only directories
:type only_dirs: bool
"""
cwd = os.getcwd()
if cwd != "/":
extras = [".", ".."]
else:
extras = []
(dir, file) = os.path.split(arg)
if dir != "":
listingdir = os.path.expanduser(dir)
else:
listingdir = cwd
for file in chain(os.listdir(listingdir), extras):
if dir != "":
userfile = dir+'/'+file
else:
userfile = file
if userfile.startswith(arg):
if os.path.isdir(listingdir+'/'+file):
userfile+='/'
yield userfile
elif not only_dirs:
yield userfile + ' '
def iter_dir_completions(arg):
"""Generate an iterator that iterates through directory name completions.
:param arg: The directory name fragment to match
:type arg: str
"""
return iter_file_completions(arg, True)
def iter_command_names(hidden=False):
for real_cmd_name in all_command_names():
cmd_obj = get_cmd_object(real_cmd_name)
if not hidden and cmd_obj.hidden:
continue
for name in [real_cmd_name] + cmd_obj.aliases:
# Don't complete on aliases that are prefixes of the canonical name
if name == real_cmd_name or not real_cmd_name.startswith(name):
yield name
def iter_executables(path):
dirname, partial = os.path.split(path)
for filename in os.listdir(dirname):
if not filename.startswith(partial):
continue
fullpath = os.path.join(dirname, filename)
mode=os.lstat(fullpath)[stat.ST_MODE]
if stat.S_ISREG(mode) and 0111 & mode:
yield fullpath + ' '
def filter_completions(iter, arg):
return (c for c in iter if c.startswith(arg))
def iter_munged_completions(iter, arg, text):
for completion in iter:
completion = str(completion)
if completion.startswith(arg):
yield completion[len(arg)-len(text):]+" "
def too_complicated(line):
for char in '|<>*?':
if char in line:
return True
return False
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