/usr/share/pyshared/bb/pysh/pysh.py is in bitbake 1.12.0-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 | # pysh.py - command processing for pysh.
#
# Copyright 2007 Patrick Mezard
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
import optparse
import os
import sys
import interp
SH_OPT = optparse.OptionParser(prog='pysh', usage="%prog [OPTIONS]", version='0.1')
SH_OPT.add_option('-c', action='store_true', dest='command_string', default=None,
help='A string that shall be interpreted by the shell as one or more commands')
SH_OPT.add_option('--redirect-to', dest='redirect_to', default=None,
help='Redirect script commands stdout and stderr to the specified file')
# See utility_command in builtin.py about the reason for this flag.
SH_OPT.add_option('--redirected', dest='redirected', action='store_true', default=False,
help='Tell the interpreter that stdout and stderr are actually the same objects, which is really stdout')
SH_OPT.add_option('--debug-parsing', action='store_true', dest='debug_parsing', default=False,
help='Trace PLY execution')
SH_OPT.add_option('--debug-tree', action='store_true', dest='debug_tree', default=False,
help='Display the generated syntax tree.')
SH_OPT.add_option('--debug-cmd', action='store_true', dest='debug_cmd', default=False,
help='Trace command execution before parameters expansion and exit status.')
SH_OPT.add_option('--debug-utility', action='store_true', dest='debug_utility', default=False,
help='Trace utility calls, after parameters expansions')
SH_OPT.add_option('--ast', action='store_true', dest='ast', default=False,
help='Encoded commands to execute in a subprocess')
SH_OPT.add_option('--profile', action='store_true', default=False,
help='Profile pysh run')
def split_args(args):
# Separate shell arguments from command ones
# Just stop at the first argument not starting with a dash. I know, this is completely broken,
# it ignores files starting with a dash or may take option values for command file. This is not
# supposed to happen for now
command_index = len(args)
for i,arg in enumerate(args):
if not arg.startswith('-'):
command_index = i
break
return args[:command_index], args[command_index:]
def fixenv(env):
path = env.get('PATH')
if path is not None:
parts = path.split(os.pathsep)
# Remove Windows utilities from PATH, they are useless at best and
# some of them (find) may be confused with other utilities.
parts = [p for p in parts if 'system32' not in p.lower()]
env['PATH'] = os.pathsep.join(parts)
if env.get('HOME') is None:
# Several utilities, including cvsps, cannot work without
# a defined HOME directory.
env['HOME'] = os.path.expanduser('~')
return env
def _sh(cwd, shargs, cmdargs, options, debugflags=None, env=None):
if os.environ.get('PYSH_TEXT') != '1':
import msvcrt
for fp in (sys.stdin, sys.stdout, sys.stderr):
msvcrt.setmode(fp.fileno(), os.O_BINARY)
hgbin = os.environ.get('PYSH_HGTEXT') != '1'
if debugflags is None:
debugflags = []
if options.debug_parsing: debugflags.append('debug-parsing')
if options.debug_utility: debugflags.append('debug-utility')
if options.debug_cmd: debugflags.append('debug-cmd')
if options.debug_tree: debugflags.append('debug-tree')
if env is None:
env = fixenv(dict(os.environ))
if cwd is None:
cwd = os.getcwd()
if not cmdargs:
# Nothing to do
return 0
ast = None
command_file = None
if options.command_string:
input = cmdargs[0]
if not options.ast:
input += '\n'
else:
args, input = interp.decodeargs(input), None
env, ast = args
cwd = env.get('PWD', cwd)
else:
command_file = cmdargs[0]
arguments = cmdargs[1:]
prefix = interp.resolve_shebang(command_file, ignoreshell=True)
if prefix:
input = ' '.join(prefix + [command_file] + arguments)
else:
# Read commands from file
f = file(command_file)
try:
# Trailing newline to help the parser
input = f.read() + '\n'
finally:
f.close()
redirect = None
try:
if options.redirected:
stdout = sys.stdout
stderr = stdout
elif options.redirect_to:
redirect = open(options.redirect_to, 'wb')
stdout = redirect
stderr = redirect
else:
stdout = sys.stdout
stderr = sys.stderr
# TODO: set arguments to environment variables
opts = interp.Options()
opts.hgbinary = hgbin
ip = interp.Interpreter(cwd, debugflags, stdout=stdout, stderr=stderr,
opts=opts)
try:
# Export given environment in shell object
for k,v in env.iteritems():
ip.get_env().export(k,v)
return ip.execute_script(input, ast, scriptpath=command_file)
finally:
ip.close()
finally:
if redirect is not None:
redirect.close()
def sh(cwd=None, args=None, debugflags=None, env=None):
if args is None:
args = sys.argv[1:]
shargs, cmdargs = split_args(args)
options, shargs = SH_OPT.parse_args(shargs)
if options.profile:
import lsprof
p = lsprof.Profiler()
p.enable(subcalls=True)
try:
return _sh(cwd, shargs, cmdargs, options, debugflags, env)
finally:
p.disable()
stats = lsprof.Stats(p.getstats())
stats.sort()
stats.pprint(top=10, file=sys.stderr, climit=5)
else:
return _sh(cwd, shargs, cmdargs, options, debugflags, env)
def main():
sys.exit(sh())
if __name__=='__main__':
main()
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