#
# Copyright (c) 2015, Adam Meily <meily.adam@gmail.com>
# Pypsi - https://github.com/ameily/pypsi
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
from pypsi.core import Command, PypsiArgParser, CommandShortCircuit
from pypsi.utils import safe_open
from pypsi.completers import path_completer
import os
class IncludeFile(object):
def __init__(self, path):
self.name = os.path.basename(path)
self.abspath = os.path.abspath(path)
[docs]class IncludeCommand(Command):
'''
Execute a script file. This entails reading each line of the given file and
processing it as if it were typed into the shell.
'''
def __init__(self, name='include', topic='shell',
brief='execute a script file', **kwargs):
self.parser = PypsiArgParser(
prog=name,
description=brief
)
self.parser.add_argument(
'path', metavar='PATH', action='store', help='file to execute'
)
super(IncludeCommand, self).__init__(
name=name, topic=topic, brief=brief,
usage=self.parser.format_help(), **kwargs
)
self.stack = []
def complete(self, shell, args, prefix):
return path_completer(args[-1])
def run(self, shell, args):
try:
ns = self.parser.parse_args(args)
except CommandShortCircuit as e:
return e.code
return self.include_file(shell, ns.path)
def include_file(self, shell, path):
fp = None
ifile = IncludeFile(path)
if self.stack:
for i in self.stack:
if i.abspath == ifile.abspath:
self.error(shell, "recursive include for file ",
ifile.abspath, '\n')
return -1
self.stack.append(ifile)
try:
fp = safe_open(path, 'r')
except (OSError, IOError) as e:
self.error(shell, "error opening file {}: {}".format(path, str(e)))
return -1
try:
# Execute the lines in the file
shell.include(fp)
except Exception as e:
self.error(shell, "error executing file ", path, ": ", str(e))
self.stack.pop()
fp.close()
return 0