simple but colorful pw asking

bin/qaskpass

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+../shell/qaskpass

shell/qaskpass

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+#!/usr/bin/env python3
+
+import curses
+import os
+import sys
+import termios
+import tty
+import argparse
+
+class getch:
+    def get(self):
+        fd = sys.stdin.fileno()
+        old_settings = termios.tcgetattr(fd)
+        try:
+            tty.setraw(sys.stdin.fileno())
+            ch = sys.stdin.read(1)
+        finally:
+            termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
+        return ch
+
+def get_opts():
+    parser = argparse.ArgumentParser(
+        description='Colorful password dialog',
+        epilog="Dialog printed to stderr, user input echoed to stdout, i.e. input=$( qaskpass )")
+
+    parser.add_argument('--title','-t', action='store', default=None,
+                        help="Title for dialog")
+    parser.add_argument('-w', action='store', type=int, default=5,
+                        help="Width of display area. 0 to disable display.")
+
+    parser.add_argument('--no-color', action='store_true',  default=False,
+                        help="Disable colors")
+
+    args = parser.parse_args()
+    return args
+
+
+
+
+def termsize():
+    rows, columns = os.popen("stty size", "r").read().split()
+    return (int(rows), int(columns))
+
+
+class bc:
+    m = "\033[95m"
+    b = "\033[94m"
+    g = "\033[92m"
+    y = "\033[93m"
+    r = "\033[91m"
+    c = "\033[96m"
+    B = "\033[1m"
+    z = "\033[0m"
+
+    def disable(self):
+        for x in "rgbcmyBz":
+            setattr(self, x, "")
+
+
+def animchar(i, pos, colorpos, width,c):
+    if i < 0:
+        return " "
+    if pos == colorpos:
+        clr = c.c
+    else:
+        if i < 10:
+            clr = c.r
+        elif i < 20:
+            clr = c.y
+        else:
+            clr = c.g
+    return clr + "▁▂▃▄▅▆▇█▇▆▅▄▃▂"[int(i / width) % 14]
+
+
+def pquit(s="", e=0):
+    print("", file=sys.stderr)
+    print(s, end="", file=sys.stdout if e == 0 else sys.stderr)
+    sys.exit(e)
+
+
+if __name__ == "__main__":
+
+    opts = get_opts()
+    # 3= ctrl-c,  13=enter
+    # 127 = backspace
+    ch = getch()
+    user_input = ""
+    display = "****       ****"
+    c = bc()
+    if opts.no_color:
+        c.disable()
+    if opts.title:
+        print(f"{c.y}{c.B}{opts.title}{c.z}", file=sys.stderr)
+    while True:
+
+        try:
+            if opts.w>0:
+                colorpos = len(user_input) % opts.w
+                display = c.m + "•••• "
+                for i in range(opts.w):
+                    display += animchar(len(user_input) - i, i, colorpos,opts.w,c)
+                display += c.m + " ••••" + c.z
+                print("\r" + display, file=sys.stderr, end="")
+            sys.stderr.flush()
+            key = ch.get()
+
+            if ord(key) == 3:  # ctrl-c
+                pquit(e=1)
+            if ord(key) == 13:  # enter
+                pquit(user_input, e=0)
+            if ord(key) == 27:  # esc (also starts control characters
+                key = ch.get()
+                if ord(key) == 27:
+                    pquit(e=1)
+                continue
+            if ord(key) == 127:  # backspace
+                user_input = user_input[0:-1]
+            else:
+                user_input += key
+            # ~ print(f'-{key}-',file=sys.stderr)
+            # ~ print(f'-{ord(key)}-',file=sys.stderr)
+
+        except Exception as e:
+            pquit(s=str(e),e=1)