Add "show sustitute" command

Author: rocky

trepan/processor/command/show_subcmd/substitute.py

@@ -0,0 +1,53 @@
+# -*- coding: utf-8 -*-
+#   Copyright (C) 2023 Rocky Bernstein
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Our local modules
+from pyficache import file2file_remap
+
+from trepan.processor.command import base_subcmd as Mbase_subcmd
+
+
+class ShowSubstitute(Mbase_subcmd.DebuggerSubcommand):
+    """**show substitute** [*from-name1* *from_name2* ... ]
+    If no *from-name* is given, then show all substitute commands
+
+    Examples:
+    ---------
+
+        show substitute importlib._bootstrap /usr/lib/python3.10/importlib/_bootstrap.py
+        show substitute
+    """
+
+    in_list = True
+    min_abbrev = len("sub")
+
+    short_help = "Set filename substitution"
+
+    def run(self, args):
+        if len(args) == 0:
+            args = file2file_remap.keys()
+
+        if len(args) == 0:
+            self.msg("No file remappings in effect.")
+        for from_path in args:
+            self.msg(f"{from_path}:\t{file2file_remap.get(from_path, from_path)}")
+
+
+if __name__ == "__main__":
+    from trepan.processor.command.set_subcmd import __demo_helper__ as Mhelper
+
+    Mhelper.demo_run(ShowSubstitute)
+    pass