Added an implementation of a new cdt-abidiff

tools/abidiff/cdt-abidiff.py

@@ -0,0 +1,46 @@
+import json
+import sys
+
+def compare_abi_files(file1, file2):
+
+    # check if the files are exist and try to read data from them
+    for file in [file1, file2]:
+        if not os.path.isfile(file):
+            print(f"Error: File '{file}' does not exist.")
+            return
+    try:
+        with open(file1, 'r') as f1, open(file2, 'r') as f2:
+            data1, data2 = json.load(f1), json.load(f2)
+    except json.JSONDecodeError as e:
+        print(f"Error: Invalid JSON in file '{e.filename}' at position {e.pos}.")
+        return
+    for data, file in [(data1, file1), (data2, file2)]:
+        if not isinstance(data, dict):
+            print(f"Error: File '{file}' does not contain a JSON object.")
+            return
+
+    diff = {}
+
+    # add to the diff dictionary the different pairs of values for a key
+    # if a key is exists in the only file add None instead of the paired data for the second file.
+    for key in data1:
+        if key not in data2:
+            diff[key] = {file1: data1[key], file2: None}
+        elif data1[key] != data2[key]:
+            diff[key] = {file1: data1[key], file2: data2[key]}
+    for key in data2:
+        if key not in data1:
+            diff[key] = {file1: None, file2: data2[key]}
+
+    if not diff:
+        print("Files are identical.")
+    else:
+        print("Differences found:")
+        print(json.dumps(diff, indent=4))
+
+
+if len(sys.argv) != 3:
+    print("Usage: python3" +  sys.argv[0] + " <file1.abi> <file2.abi>")
+else:
+    file1, file2 = sys.argv[1], sys.argv[2]
+    compare_abi_files(file1, file2)