Allow using the ask kitten to pick a choice

kittens/ask/main.py

@@ -13,7 +13,8 @@
 from kitty.typing import BossType
 
 from ..tui.handler import result_handler
-from ..tui.operations import alternate_screen, set_cursor_visible, styled
+from ..tui.operations import alternate_screen, styled
+from ..tui.utils import get_key_press
 
 if TYPE_CHECKING:
     import readline
@@ -70,7 +71,7 @@ def __exit__(self, *a: object) -> None:
 def option_text() -> str:
     return '''\
 --type -t
-choices=line,yesno
+choices=line,yesno,choices
 default=line
 Type of input. Defaults to asking for a line of text.
 
@@ -83,6 +84,16 @@ def option_text() -> str:
 --name -n
 The name for this question. Used to store history of previous answers which can
 be used for completions and via the browse history readline bindings.
+
+
+--choice -c
+type=list
+dest=choices
+A choice for the choices type. Every choice has the syntax: letter:text Where
+letter is the accelerator key and text is the corresponding text.  There can be
+an optional color specification after the letter to indicate what color it should
+be.
+For example: y:Yes and n;red:No
 '''
 
 
@@ -97,23 +108,34 @@ class Response(TypedDict):
     response: Optional[str]
 
 
-def yesno(cli_opts: AskCLIOptions, items: List[str]) -> Response:
-    import tty
+def choice(cli_opts: AskCLIOptions, items: List[str]) -> Response:
     with alternate_screen():
         if cli_opts.message:
             print(styled(cli_opts.message, bold=True))
         print()
-        print(' ', styled('Y', fg='green') + 'es', ' ', styled('N', fg='red') + 'o', set_cursor_visible(False))
-        sys.stdout.flush()
-        tty.setraw(sys.stdin.fileno())
-        try:
-            response = sys.stdin.buffer.read(1)
-            yes = response in (b'y', b'Y', b'\r', b'\n', b' ')
-            return {'items': items, 'response': 'y' if yes else 'n'}
-        finally:
-            sys.stdout.write(set_cursor_visible(True))
-            tty.setcbreak(sys.stdin.fileno())
-            sys.stdout.flush()
+        allowed = ''
+        for choice in cli_opts.choices:
+            color = 'green'
+            letter, text = choice.split(':', maxsplit=1)
+            if ';' in letter:
+                letter, color = letter.split(';', maxsplit=1)
+            letter = letter.lower()
+            idx = text.lower().index(letter)
+            allowed += letter
+            print(text[:idx], styled(text[idx], fg=color), text[idx:], sep='', end='  ')
+        print()
+        response = get_key_press(allowed, '')
+        return {'items': items, 'response': response}
+
+
+def yesno(cli_opts: AskCLIOptions, items: List[str]) -> Response:
+    with alternate_screen():
+        if cli_opts.message:
+            print(styled(cli_opts.message, bold=True))
+        print()
+        print(' ', styled('Y', fg='green') + 'es', ' ', styled('N', fg='red') + 'o')
+        response = get_key_press('yn', 'n')
+        return {'items': items, 'response': response}
 
 
 def main(args: List[str]) -> Response:
@@ -132,6 +154,8 @@ def main(args: List[str]) -> Response:
 
     if cli_opts.type == 'yesno':
         return yesno(cli_opts, items)
+    if cli_opts.type == 'choices':
+        return choice(cli_opts, items)
 
     import readline as rl
     readline = rl

kittens/remote_file/main.py

@@ -11,43 +11,27 @@
 import sys
 import tempfile
 import time
-from contextlib import suppress
 from typing import Any, List, Optional
 
 from kitty.cli import parse_args
 from kitty.cli_stub import RemoteFileCLIOptions
 from kitty.constants import cache_dir
 from kitty.typing import BossType
-from kitty.utils import command_for_open, get_editor, open_cmd, SSHConnectionData
+from kitty.utils import (
+    SSHConnectionData, command_for_open, get_editor, open_cmd
+)
 
 from ..tui.handler import result_handler
 from ..tui.operations import (
-    faint, raw_mode, reset_terminal, set_cursor_visible, styled
+    faint, raw_mode, reset_terminal, styled
 )
+from ..tui.utils import get_key_press
 
 
 def key(x: str) -> str:
     return styled(x, bold=True, fg='green')
 
 
-def get_key_press(allowed: str, default: str) -> str:
-    response = default
-    with raw_mode():
-        try:
-            while True:
-                q = sys.stdin.buffer.read(1)
-                if q:
-                    if q in b'\x1b\x03':
-                        break
-                    with suppress(Exception):
-                        response = q.decode('utf-8').lower()
-                        if response in allowed:
-                            break
-        except (KeyboardInterrupt, EOFError):
-            pass
-    return response
-
-
 def option_text() -> str:
     return '''\
 --mode -m
@@ -194,7 +178,6 @@ def main(args: List[str]) -> Result:
             input('Press enter to quit...')
         raise SystemExit(e.code)
 
-    print(set_cursor_visible(False), end='', flush=True)
     try:
         action = ask_action(cli_opts)
     finally:

kittens/tui/utils.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2020, Kovid Goyal <kovid at kovidgoyal.net>
+
+import sys
+from contextlib import suppress
+
+from .operations import raw_mode, set_cursor_visible
+
+
+def get_key_press(allowed: str, default: str) -> str:
+    response = default
+    with raw_mode():
+        print(set_cursor_visible(False), end='', flush=True)
+        try:
+            while True:
+                q = sys.stdin.buffer.read(1)
+                if q:
+                    if q in b'\x1b\x03':
+                        break
+                    with suppress(Exception):
+                        response = q.decode('utf-8').lower()
+                        if response in allowed:
+                            break
+        except (KeyboardInterrupt, EOFError):
+            pass
+        finally:
+            print(set_cursor_visible(True), end='', flush=True)
+    return response