| 1 | """
|
| 2 | py_readline.py: GNU readline wrapper that's also implemented in C++
|
| 3 | """
|
| 4 |
|
| 5 | try:
|
| 6 | import line_input
|
| 7 | except ImportError:
|
| 8 | line_input = None
|
| 9 |
|
| 10 | from typing import Optional, TYPE_CHECKING
|
| 11 | if TYPE_CHECKING:
|
| 12 | from core.completion import ReadlineCallback
|
| 13 | from core.comp_ui import _IDisplay
|
| 14 |
|
| 15 |
|
| 16 | class Readline(object):
|
| 17 | """A thin wrapper around GNU readline to make it usable from C++."""
|
| 18 |
|
| 19 | def __init__(self):
|
| 20 | # type: () -> None
|
| 21 | assert line_input is not None
|
| 22 |
|
| 23 | def prompt_input(self, prompt):
|
| 24 | # type: (str) -> str
|
| 25 | """
|
| 26 | Print prompt, read line, and return it with trailing newline. Or raise
|
| 27 | EOFError.
|
| 28 | """
|
| 29 | # Add trailing newline to make GNU readline conform to Python's
|
| 30 | # f.readline() interface
|
| 31 | return raw_input(prompt) + '\n'
|
| 32 |
|
| 33 | def parse_and_bind(self, s):
|
| 34 | # type: (str) -> None
|
| 35 | line_input.parse_and_bind(s)
|
| 36 |
|
| 37 | def read_init_file(self, s):
|
| 38 | # type: (str) -> None
|
| 39 | line_input.read_init_file(s)
|
| 40 |
|
| 41 | def add_history(self, line):
|
| 42 | # type: (str) -> None
|
| 43 | line_input.add_history(line)
|
| 44 |
|
| 45 | def read_history_file(self, path=None):
|
| 46 | # type: (Optional[str]) -> None
|
| 47 | line_input.read_history_file(path)
|
| 48 |
|
| 49 | def write_history_file(self, path=None):
|
| 50 | # type: (Optional[str]) -> None
|
| 51 | line_input.write_history_file(path)
|
| 52 |
|
| 53 | def set_completer(self, completer=None):
|
| 54 | # type: (Optional[ReadlineCallback]) -> None
|
| 55 | line_input.set_completer(completer)
|
| 56 |
|
| 57 | def set_completer_delims(self, delims):
|
| 58 | # type: (str) -> None
|
| 59 | line_input.set_completer_delims(delims)
|
| 60 |
|
| 61 | def set_completion_display_matches_hook(self, display=None):
|
| 62 | # type: (Optional[_IDisplay]) -> None
|
| 63 | hook = None
|
| 64 | if display is not None:
|
| 65 | hook = lambda *args: display.PrintCandidates(*args)
|
| 66 |
|
| 67 | line_input.set_completion_display_matches_hook(hook)
|
| 68 |
|
| 69 | def get_line_buffer(self):
|
| 70 | # type: () -> str
|
| 71 | return line_input.get_line_buffer()
|
| 72 |
|
| 73 | def get_begidx(self):
|
| 74 | # type: () -> int
|
| 75 | return line_input.get_begidx()
|
| 76 |
|
| 77 | def get_endidx(self):
|
| 78 | # type: () -> int
|
| 79 | return line_input.get_endidx()
|
| 80 |
|
| 81 | def clear_history(self):
|
| 82 | # type: () -> None
|
| 83 | line_input.clear_history()
|
| 84 |
|
| 85 | def get_history_item(self, pos):
|
| 86 | # type: (int) -> str
|
| 87 | return line_input.get_history_item(pos)
|
| 88 |
|
| 89 | def remove_history_item(self, pos):
|
| 90 | # type: (int) -> None
|
| 91 | line_input.remove_history_item(pos)
|
| 92 |
|
| 93 | def get_current_history_length(self):
|
| 94 | # type: () -> int
|
| 95 | return line_input.get_current_history_length()
|
| 96 |
|
| 97 | def resize_terminal(self):
|
| 98 | # type: () -> None
|
| 99 | line_input.resize_terminal()
|
| 100 |
|
| 101 | def list_funmap_names(self):
|
| 102 | # type: () -> None
|
| 103 | line_input.list_funmap_names()
|
| 104 |
|
| 105 | def function_dumper(self, print_readably):
|
| 106 | # type: (bool) -> None
|
| 107 | line_input.function_dumper(print_readably)
|
| 108 |
|
| 109 | def macro_dumper(self, print_readably):
|
| 110 | # type: (bool) -> None
|
| 111 | line_input.macro_dumper(print_readably)
|
| 112 |
|
| 113 | def variable_dumper(self, print_readably):
|
| 114 | # type: (bool) -> None
|
| 115 | line_input.variable_dumper(print_readably)
|
| 116 |
|
| 117 | def query_bindings(self, fn_name):
|
| 118 | # type: (str) -> None
|
| 119 | line_input.query_bindings(fn_name)
|
| 120 |
|
| 121 |
|
| 122 | def MaybeGetReadline():
|
| 123 | # type: () -> Optional[Readline]
|
| 124 | """Returns a readline "module" if we were built with readline support."""
|
| 125 | if line_input is not None:
|
| 126 | return Readline()
|
| 127 |
|
| 128 | return None
|
| 129 |
|
| 130 |
|
| 131 | if __name__ == '__main__':
|
| 132 | import sys
|
| 133 | readline = MaybeGetReadline()
|
| 134 | try:
|
| 135 | prompt_str = sys.argv[1]
|
| 136 | except IndexError:
|
| 137 | prompt_str = '! '
|
| 138 |
|
| 139 | while True:
|
| 140 | x = readline.prompt_input(prompt_str)
|
| 141 | print(x)
|