Added a simple CLI.

pyproject.toml

@@ -49,6 +49,9 @@ Source = "https://github.com/microsoft/markitdown"
 [tool.hatch.version]
 path = "src/markitdown/__about__.py"
 
+[project.scripts]
+markitdown = "markitdown.__main__:main"
+
 [tool.hatch.envs.types]
 extra-dependencies = [
   "mypy>=1.0.0",

src/markitdown/__main__.py

@@ -0,0 +1,42 @@
+# SPDX-FileCopyrightText: 2024-present Adam Fourney <adamfo@microsoft.com>
+#
+# SPDX-License-Identifier: MIT
+import sys
+from ._markitdown import MarkItDown
+
+
+def main():
+    if len(sys.argv) == 1:
+        markitdown = MarkItDown()
+        result = markitdown.convert_stream(sys.stdin.buffer)
+        print(result.text_content)
+    elif len(sys.argv) == 2:
+        markitdown = MarkItDown()
+        result = markitdown.convert(sys.argv[1])
+        print(result.text_content)
+    else:
+        sys.stderr.write(
+            """
+SYNTAX: 
+    
+    markitdown <OPTIONAL: FILENAME>
+    If FILENAME is empty, markitdown reads from stdin.
+
+EXAMPLE:
+    
+    markitdown example.pdf
+    
+    OR
+
+    cat example.pdf | markitdown
+
+    OR 
+
+    markitdown < example.pdf
+""".strip()
+            + "\n"
+        )
+
+
+if __name__ == "__main__":
+    main()