reset: Add reset.py

Author: Expertcoderz

src/reset.py

@@ -0,0 +1,78 @@
+#!/usr/bin/python3
+
+import os
+import sys
+from optparse import OptionParser
+
+
+# reset(1), roughly modelled off the ncurses implementation.
+
+
+def reset(opts, term: str | None = os.environ.get("TERM")):
+    if opts.q:
+        if not term:
+            print(f"unknown terminal type ", file=sys.stderr)
+            try:
+                while True:
+                    if term := input("Terminal type? "):
+                        break
+            except KeyboardInterrupt:
+                print()
+                sys.exit(130)
+
+        print(term)
+        return
+
+    print("\x1bc", end="")
+
+    if opts.r:
+        print(f"Terminal type is {term}.")
+
+    if opts.s:
+        print(f"TERM={term};")
+
+
+if __name__ == "__main__":
+    parser = OptionParser(
+        usage="Usage: %prog [OPTION]... [IGNORED]...",
+        description="Initialize or reset the terminal state.",
+        add_help_option=False,
+    )
+    parser.add_option("--help", action="help", help="show usage information and exit")
+
+    parser.add_option("-I", action="store_true", help="(unimplemented)")
+    parser.add_option("-c", action="store_true", help="(unimplemented)")
+    parser.add_option("-Q", action="store_true", help="(unimplemented)")
+
+    parser.add_option(
+        "-q",
+        action="store_true",
+        help="print the terminal type; do not initialize the terminal",
+    )
+    parser.add_option(
+        "-r", action="store_true", help="print the terminal type to standard error"
+    )
+    parser.add_option(
+        "-s",
+        action="store_true",
+        help="print the sequence of shell commands to initialize the TERM environment variable",
+    )
+
+    parser.add_option("-w", action="store_true", help="(unimplemented)")
+
+    parser.add_option("-e", metavar="CHAR", help="(unimplemented)")
+    parser.add_option("-i", metavar="CHAR", help="(unimplemented)")
+    parser.add_option("-k", metavar="CHAR", help="(unimplemented)")
+
+    parser.add_option("-m", metavar="MAPPING", help="(unimplemented)")
+
+    opts, args = parser.parse_args()
+
+    if args and args[0] == "-":
+        opts.q = True
+        del args[0]
+
+    if args:
+        reset(opts, args[0])
+    else:
+        reset(opts)