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| <a href="lldb-module.html">Package lldb</a> :: |
| Module embedded_interpreter |
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| <h1 class="epydoc">Source Code for <a href="lldb.embedded_interpreter-module.html">Module lldb.embedded_interpreter</a></h1> |
| <pre class="py-src"> |
| import sys |
| if sys.version_info[0] < 3: |
| import __builtin__ as builtins |
| else: |
| import builtins |
| import code |
| import lldb |
| import traceback |
| |
| try: |
| import readline |
| import rlcompleter |
| except ImportError: |
| have_readline = False |
| except AttributeError: |
| # This exception gets hit by the rlcompleter when Linux is using |
| # the readline suppression import. |
| have_readline = False |
| else: |
| have_readline = True |
| if 'libedit' in readline.__doc__: |
| readline.parse_and_bind('bind ^I rl_complete') |
| else: |
| readline.parse_and_bind('tab: complete') |
| |
| g_builtin_override_called = False |
| |
| |
| class LLDBQuitter(object): |
| |
| def __init__(self, name): |
| self.name = name |
| |
| def __repr__(self): |
| self() |
| |
| def __call__(self, code=None): |
| global g_builtin_override_called |
| g_builtin_override_called = True |
| raise SystemExit(-1) |
| |
| |
| def setquit(): |
| '''Redefine builtin functions 'quit()' and 'exit()' to print a message and raise an EOFError exception.''' |
| # This function will be called prior to each interactive |
| # interpreter loop or each single line, so we set the global |
| # g_builtin_override_called to False so we know if a SystemExit |
| # is thrown, we can catch it and tell the difference between |
| # a call to "quit()" or "exit()" and something like |
| # "sys.exit(123)" |
| global g_builtin_override_called |
| g_builtin_override_called = False |
| builtins.quit = LLDBQuitter('quit') |
| builtins.exit = LLDBQuitter('exit') |
| |
| # When running one line, we might place the string to run in this string |
| # in case it would be hard to correctly escape a string's contents |
| |
| g_run_one_line_str = None |
| |
| |
| def get_terminal_size(fd): |
| try: |
| import fcntl |
| import termios |
| import struct |
| hw = struct.unpack('hh', fcntl.ioctl(fd, termios.TIOCGWINSZ, '1234')) |
| except: |
| hw = (0, 0) |
| return hw |
| |
| |
| def readfunc_stdio(prompt): |
| sys.stdout.write(prompt) |
| return sys.stdin.readline().rstrip() |
| |
| |
| def run_python_interpreter(local_dict): |
| # Pass in the dictionary, for continuity from one session to the next. |
| setquit() |
| try: |
| fd = sys.stdin.fileno() |
| interacted = False |
| if get_terminal_size(fd)[1] == 0: |
| try: |
| import termios |
| old = termios.tcgetattr(fd) |
| if old[3] & termios.ECHO: |
| # Need to turn off echoing and restore |
| new = termios.tcgetattr(fd) |
| new[3] = new[3] & ~termios.ECHO |
| try: |
| termios.tcsetattr(fd, termios.TCSADRAIN, new) |
| interacted = True |
| code.interact( |
| banner="Python Interactive Interpreter. To exit, type 'quit()', 'exit()'.", |
| readfunc=readfunc_stdio, |
| local=local_dict) |
| finally: |
| termios.tcsetattr(fd, termios.TCSADRAIN, old) |
| except: |
| pass |
| # Don't need to turn off echoing |
| if not interacted: |
| code.interact( |
| banner="Python Interactive Interpreter. To exit, type 'quit()', 'exit()' or Ctrl-D.", |
| readfunc=readfunc_stdio, |
| local=local_dict) |
| else: |
| # We have a real interactive terminal |
| code.interact( |
| banner="Python Interactive Interpreter. To exit, type 'quit()', 'exit()' or Ctrl-D.", |
| local=local_dict) |
| except SystemExit as e: |
| global g_builtin_override_called |
| if not g_builtin_override_called: |
| print('Script exited with %s' % (e)) |
| |
| |
| def run_one_line(local_dict, input_string): |
| global g_run_one_line_str |
| setquit() |
| try: |
| repl = code.InteractiveConsole(local_dict) |
| if input_string: |
| repl.runsource(input_string) |
| elif g_run_one_line_str: |
| repl.runsource(g_run_one_line_str) |
| |
| except SystemExit as e: |
| global g_builtin_override_called |
| if not g_builtin_override_called: |
| print('Script exited with %s' % (e)) |
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