| 1 | #!/usr/bin/env python2
|
| 2 | """
|
| 3 | readline_osh.py - Builtins that are dependent on GNU readline.
|
| 4 | """
|
| 5 | from __future__ import print_function
|
| 6 |
|
| 7 | from _devbuild.gen import arg_types
|
| 8 | from _devbuild.gen.syntax_asdl import loc
|
| 9 | from _devbuild.gen.value_asdl import value_e
|
| 10 | from core import pyutil
|
| 11 | from core import vm
|
| 12 | from core.error import e_usage
|
| 13 | from frontend import flag_util
|
| 14 | from mycpp import mops
|
| 15 | from mycpp import mylib
|
| 16 | from mycpp.mylib import log
|
| 17 |
|
| 18 | from typing import Optional, Any, TYPE_CHECKING
|
| 19 | if TYPE_CHECKING:
|
| 20 | from _devbuild.gen.runtime_asdl import cmd_value
|
| 21 | from frontend.py_readline import Readline
|
| 22 | from core import sh_init
|
| 23 | from display import ui
|
| 24 |
|
| 25 | _ = log
|
| 26 |
|
| 27 |
|
| 28 | class ctx_Keymap(object):
|
| 29 |
|
| 30 | def __init__(self, readline, keymap_name=None):
|
| 31 | # type: (Readline, str) -> None
|
| 32 | self.readline = readline
|
| 33 | self.orig_keymap_name = keymap_name
|
| 34 |
|
| 35 | def __enter__(self):
|
| 36 | # type: () -> None
|
| 37 | if self.orig_keymap_name:
|
| 38 | self.readline.use_temp_keymap(self.orig_keymap_name)
|
| 39 |
|
| 40 | def __exit__(self, type, value, traceback):
|
| 41 | # type: (Any, Any, Any) -> None
|
| 42 | if self.orig_keymap_name is not None:
|
| 43 | self.readline.restore_orig_keymap()
|
| 44 |
|
| 45 |
|
| 46 | class Bind(vm._Builtin):
|
| 47 | """Interactive interface to readline bindings"""
|
| 48 |
|
| 49 | def __init__(self, readline, errfmt):
|
| 50 | # type: (Optional[Readline], ui.ErrorFormatter) -> None
|
| 51 | self.readline = readline
|
| 52 | self.errfmt = errfmt
|
| 53 | self.exclusive_flags = ["q", "u", "r", "x", "f"]
|
| 54 |
|
| 55 | def Run(self, cmd_val):
|
| 56 | # type: (cmd_value.Argv) -> int
|
| 57 | readline = self.readline
|
| 58 | if not readline:
|
| 59 | e_usage("is disabled because Oils wasn't compiled with 'readline'",
|
| 60 | loc.Missing)
|
| 61 |
|
| 62 | attrs, arg_r = flag_util.ParseCmdVal('bind', cmd_val)
|
| 63 |
|
| 64 | # print("attrs:\n", attrs)
|
| 65 | # print("attrs.attrs:\n", attrs.attrs)
|
| 66 | # print("attrs.attrs.m:\n", attrs.attrs["m"])
|
| 67 | # print("type(attrs.attrs.m):\n", type(attrs.attrs["m"]))
|
| 68 | # print("type(attrs.attrs[m]):\n", type(attrs.attrs["m"]))
|
| 69 | # print("attrs.attrs[m].tag() :\n", attrs.attrs["m"].tag())
|
| 70 | # print("attrs.attrs[m].tag() == value_e.Undef:\n", attrs.attrs["m"].tag() == value_e.Undef)
|
| 71 | # print(arg_r)
|
| 72 | # print("Reader argv=%s locs=%s n=%i i=%i" % (arg_r.argv, str(arg_r.locs), arg_r.n, arg_r.i))
|
| 73 |
|
| 74 | # Check mutually-exclusive flags and non-flag args
|
| 75 | found = False
|
| 76 | for flag in self.exclusive_flags:
|
| 77 | if (flag in attrs.attrs and
|
| 78 | attrs.attrs[flag].tag() != value_e.Undef):
|
| 79 | # print("\tFound flag: {0} with tag: {1}".format(flag, attrs.attrs[flag].tag()))
|
| 80 | if found:
|
| 81 | self.errfmt.Print_(
|
| 82 | "error: can only use one of the following flags at a time: -"
|
| 83 | + ", -".join(self.exclusive_flags),
|
| 84 | blame_loc=cmd_val.arg_locs[0])
|
| 85 | return 1
|
| 86 | else:
|
| 87 | found = True
|
| 88 | if found and not arg_r.AtEnd():
|
| 89 | self.errfmt.Print_(
|
| 90 | "error: cannot mix bind commands with the following flags: -" +
|
| 91 | ", -".join(self.exclusive_flags),
|
| 92 | blame_loc=cmd_val.arg_locs[0])
|
| 93 | return 1
|
| 94 |
|
| 95 | arg = arg_types.bind(attrs.attrs)
|
| 96 | # print("arg:\n", arg)
|
| 97 | # print("dir(arg):\n", dir(arg))
|
| 98 | # for prop in dir(arg):
|
| 99 | # if not prop.startswith('__'):
|
| 100 | # value = getattr(arg, prop)
|
| 101 | # print("Property: {0}, Value: {1}".format(prop, value))
|
| 102 | # print("arg.m:\n", arg.m)
|
| 103 |
|
| 104 | try:
|
| 105 | with ctx_Keymap(readline, arg.m): # Replicates bind's -m behavior
|
| 106 |
|
| 107 | # This gauntlet of ifs is meant to replicate bash behavior, in case we
|
| 108 | # need to relax the mutual exclusion of flags like bash does
|
| 109 |
|
| 110 | # List names of functions
|
| 111 | if arg.l:
|
| 112 | readline.list_funmap_names()
|
| 113 |
|
| 114 | # Print function names and bindings
|
| 115 | if arg.p:
|
| 116 | readline.function_dumper(True) # reusable as input
|
| 117 | if arg.P:
|
| 118 | readline.function_dumper(False)
|
| 119 |
|
| 120 | # Print macros
|
| 121 | if arg.s:
|
| 122 | readline.macro_dumper(True) # reusable as input
|
| 123 | if arg.S:
|
| 124 | readline.macro_dumper(False)
|
| 125 |
|
| 126 | # Print readline variable names
|
| 127 | if arg.v:
|
| 128 | readline.variable_dumper(True)
|
| 129 | if arg.V:
|
| 130 | readline.variable_dumper(False)
|
| 131 |
|
| 132 | if arg.f is not None:
|
| 133 | readline.read_init_file(arg.f)
|
| 134 |
|
| 135 | if arg.q is not None:
|
| 136 | readline.query_bindings(arg.q)
|
| 137 |
|
| 138 | if arg.u is not None:
|
| 139 | readline.unbind_rl_function(arg.u)
|
| 140 |
|
| 141 | if 0:
|
| 142 | # disabled until we fix error with rl_function_of_keyseq_len()
|
| 143 | if arg.r is not None:
|
| 144 | readline.unbind_keyseq(arg.r)
|
| 145 |
|
| 146 | if arg.x is not None:
|
| 147 | self.errfmt.Print_("warning: bind -x isn't implemented",
|
| 148 | blame_loc=cmd_val.arg_locs[0])
|
| 149 | return 1
|
| 150 |
|
| 151 | if arg.X:
|
| 152 | readline.print_shell_cmd_map()
|
| 153 |
|
| 154 | bindings, arg_locs = arg_r.Rest2()
|
| 155 | #log('bindings %d locs %d', len(arg_r.argv), len(arg_r.locs))
|
| 156 |
|
| 157 | for i, binding in enumerate(bindings):
|
| 158 | try:
|
| 159 | #log("Binding %s (%d)", binding, i)
|
| 160 | #log("Arg loc %s (%d)", arg_locs[i], i)
|
| 161 | readline.parse_and_bind(binding)
|
| 162 | except ValueError as e:
|
| 163 | msg = e.message # type: str
|
| 164 | self.errfmt.Print_("bind error: %s" % msg, arg_locs[i])
|
| 165 | return 1
|
| 166 |
|
| 167 | except ValueError as e:
|
| 168 | # only print out the exception message if non-empty
|
| 169 | # some bash bind errors return non-zero, but print to stdout
|
| 170 | # temp var to work around mycpp runtime limitation
|
| 171 | msg2 = e.message # type: str
|
| 172 | if msg2:
|
| 173 | self.errfmt.Print_("bind error: %s" % msg2, loc.Missing)
|
| 174 | return 1
|
| 175 |
|
| 176 | return 0
|
| 177 |
|
| 178 |
|
| 179 | class History(vm._Builtin):
|
| 180 | """Show interactive command history."""
|
| 181 |
|
| 182 | def __init__(
|
| 183 | self,
|
| 184 | readline, # type: Optional[Readline]
|
| 185 | sh_files, # type: sh_init.ShellFiles
|
| 186 | errfmt, # type: ui.ErrorFormatter
|
| 187 | f, # type: mylib.Writer
|
| 188 | ):
|
| 189 | # type: (...) -> None
|
| 190 | self.readline = readline
|
| 191 | self.sh_files = sh_files
|
| 192 | self.errfmt = errfmt
|
| 193 | self.f = f # this hook is for unit testing only
|
| 194 |
|
| 195 | def Run(self, cmd_val):
|
| 196 | # type: (cmd_value.Argv) -> int
|
| 197 | # NOTE: This builtin doesn't do anything in non-interactive mode in bash?
|
| 198 | # It silently exits zero.
|
| 199 | # zsh -c 'history' produces an error.
|
| 200 | readline = self.readline
|
| 201 | if not readline:
|
| 202 | e_usage("is disabled because Oils wasn't compiled with 'readline'",
|
| 203 | loc.Missing)
|
| 204 |
|
| 205 | attrs, arg_r = flag_util.ParseCmdVal('history', cmd_val)
|
| 206 | arg = arg_types.history(attrs.attrs)
|
| 207 |
|
| 208 | # Clear all history
|
| 209 | if arg.c:
|
| 210 | readline.clear_history()
|
| 211 | return 0
|
| 212 |
|
| 213 | if arg.a:
|
| 214 | hist_file = self.sh_files.HistoryFile()
|
| 215 | if hist_file is None:
|
| 216 | return 1
|
| 217 |
|
| 218 | try:
|
| 219 | readline.write_history_file(hist_file)
|
| 220 | except (IOError, OSError) as e:
|
| 221 | self.errfmt.Print_(
|
| 222 | 'Error writing HISTFILE %r: %s' %
|
| 223 | (hist_file, pyutil.strerror(e)), loc.Missing)
|
| 224 | return 1
|
| 225 |
|
| 226 | return 0
|
| 227 |
|
| 228 | if arg.r:
|
| 229 | hist_file = self.sh_files.HistoryFile()
|
| 230 | if hist_file is None:
|
| 231 | return 1
|
| 232 |
|
| 233 | try:
|
| 234 | readline.read_history_file(hist_file)
|
| 235 | except (IOError, OSError) as e:
|
| 236 | self.errfmt.Print_(
|
| 237 | 'Error reading HISTFILE %r: %s' %
|
| 238 | (hist_file, pyutil.strerror(e)), loc.Missing)
|
| 239 | return 1
|
| 240 |
|
| 241 | return 0
|
| 242 |
|
| 243 | # Delete history entry by id number
|
| 244 | arg_d = mops.BigTruncate(arg.d)
|
| 245 | if arg_d >= 0:
|
| 246 | cmd_index = arg_d - 1
|
| 247 |
|
| 248 | try:
|
| 249 | readline.remove_history_item(cmd_index)
|
| 250 | except ValueError:
|
| 251 | e_usage("couldn't find item %d" % arg_d, loc.Missing)
|
| 252 |
|
| 253 | return 0
|
| 254 |
|
| 255 | # Returns 0 items in non-interactive mode?
|
| 256 | num_items = readline.get_current_history_length()
|
| 257 | #log('len = %d', num_items)
|
| 258 |
|
| 259 | num_arg, num_arg_loc = arg_r.Peek2()
|
| 260 |
|
| 261 | if num_arg is None:
|
| 262 | start_index = 1
|
| 263 | else:
|
| 264 | try:
|
| 265 | num_to_show = int(num_arg)
|
| 266 | except ValueError:
|
| 267 | e_usage('got invalid argument %r' % num_arg, num_arg_loc)
|
| 268 | start_index = max(1, num_items + 1 - num_to_show)
|
| 269 |
|
| 270 | arg_r.Next()
|
| 271 | if not arg_r.AtEnd():
|
| 272 | e_usage('got too many arguments', loc.Missing)
|
| 273 |
|
| 274 | # TODO:
|
| 275 | # - Exclude lines that don't parse from the history! bash and zsh don't do
|
| 276 | # that.
|
| 277 | # - Consolidate multiline commands.
|
| 278 |
|
| 279 | for i in xrange(start_index, num_items + 1): # 1-based index
|
| 280 | item = readline.get_history_item(i)
|
| 281 | self.f.write('%5d %s\n' % (i, item))
|
| 282 | return 0
|