feat: -m pysnooper flag

Signed-off-by: itay-goldraich <116950155+itay-goldraich@users.noreply.github.com>

pysnooper/__main__.py

@@ -0,0 +1,19 @@
+# Copyright 2019 Ram Rachum and collaborators.
+# This program is distributed under the MIT license.
+
+from wrapper import snoop_wrapper
+import sys
+
+def main():
+    #TODO: Add flags for different options
+    if sys.argv[1] == "-m": #python3 -m pysnooper <file path> <file arguments> 
+        snoop_wrapper()
+    if sys.argv[1] =='h':
+        print("Usage: python3 -m pysnooper <file path> <file arguments>")
+        sys.exit(1)
+
+if __name__ == '__main__': 
+    #TODO: Add flags for different options
+    #TODO: Assertions 
+    
+  main()

pysnooper/wrapper.py

@@ -0,0 +1,62 @@
+# Copyright 2019 Ram Rachum and collaborators.
+# This program is distributed under the MIT license.
+
+import sys
+import os
+import subprocess
+
+#TODO: Pass the arguments to the file_snoop 
+
+# Define the snoop code to be prepended to the original code
+snoop_code = """import pysnooper
+pysnooper.snoop().__enter__()
+"""
+
+def assertions():
+    assert len(sys.argv) >1, "Usage: python <script> <file path> <file arguments>"
+    
+def read_file(file_path) -> str:
+    try:
+        with open(file_path) as f:
+            file_text = f.read()
+        return file_text
+    except IOError:
+        print(f"Error: Reading {file_path}")
+        sys.exit(1)
+
+def write_file(file_path, text):
+    try:
+        with open(file_path, 'w') as f:
+            f.write(text)
+    except IOError:
+        print(f"Error: Writing {file_path}")
+        sys.exit(1)
+        
+def remove_file(file_path):
+    try:
+        os.remove(file_path)
+    except IOError:
+        print(f"Error: Removing {file_path}")
+        sys.exit(1)
+    
+def run_code(file_path): 
+    try:
+            subprocess.run(["python3", file_path])
+    except IOError:
+        print(f"Error: Reading {file_path}")
+        sys.exit(1)
+
+    
+def snoop_wrapper():
+    file_path = sys.argv[2]
+    temp_file_path = file_path[:-3] + "_snoop.py"
+    #Write the snoop code to a temp file
+    original_code = read_file(file_path)
+    new_code = snoop_code + original_code
+    write_file(temp_file_path, new_code)
+    
+    #Run the temp file
+    run_code(temp_file_path)
+    
+    #Remove the temp file
+    remove_file(temp_file_path)