1 files changed, 61 insertions, 0 deletions
diff --git a/debuginfo-tests/dexter/dex/tools/help/Tool.py b/debuginfo-tests/dexter/dex/tools/help/Tool.py
new file mode 100644
index 00000000000..2b35af4b98f
--- /dev/null
+++ b/debuginfo-tests/dexter/dex/tools/help/Tool.py
@@ -0,0 +1,61 @@
+# DExTer : Debugging Experience Tester
+# ~~~~~~   ~         ~~         ~   ~~
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+"""Help tool."""
+
+import imp
+import textwrap
+
+from dex.tools import ToolBase, get_tool_names, get_tools_directory, tool_main
+from dex.utils.ReturnCode import ReturnCode
+
+
+class Tool(ToolBase):
+    """Provides help info on subtools."""
+
+    @property
+    def name(self):
+        return 'DExTer help'
+
+    @property
+    def _visible_tool_names(self):
+        return [t for t in get_tool_names() if not t.endswith('-')]
+
+    def add_tool_arguments(self, parser, defaults):
+        parser.description = Tool.__doc__
+        parser.add_argument(
+            'tool',
+            choices=self._visible_tool_names,
+            nargs='?',
+            help='name of subtool')
+
+    def handle_options(self, defaults):
+        pass
+
+    @property
+    def _default_text(self):
+        s = '\n<b>The following subtools are available:</>\n\n'
+        tools_directory = get_tools_directory()
+        for tool_name in sorted(self._visible_tool_names):
+            internal_name = tool_name.replace('-', '_')
+            module_info = imp.find_module(internal_name, [tools_directory])
+            tool_doc = imp.load_module(internal_name,
+                                       *module_info).Tool.__doc__
+            tool_doc = tool_doc.strip() if tool_doc else ''
+            tool_doc = textwrap.fill(' '.join(tool_doc.split()), 80)
+            s += '<g>{}</>\n{}\n\n'.format(tool_name, tool_doc)
+        return s
+
+    def go(self) -> ReturnCode:
+        if self.context.options.tool is None:
+            self.context.o.auto(self._default_text)
+            return ReturnCode.OK
+
+        tool_name = self.context.options.tool.replace('-', '_')
+        tools_directory = get_tools_directory()
+        module_info = imp.find_module(tool_name, [tools_directory])
+        module = imp.load_module(tool_name, *module_info)
+        return tool_main(self.context, module.Tool(self.context), ['--help'])