tools: add compare_BOM.py

tools/compare_BOM.py

+#! /usr/bin/env python3
+
+import argparse
+import pprint
+import pandas
+
+parser = argparse.ArgumentParser(description="Compare 2 BOMs in ODF format (dumped by Altium in Excel and then converted to ods)")
+parser.add_argument('ref_BOM')
+parser.add_argument('new_BOM')
+args = parser.parse_args()
+
+pp = pprint.PrettyPrinter(indent=4)
+
+def read_line_eof(f):
+    l = f.readline()
+    if len(l) == 0:
+        raise EOFError
+    return l.strip()
+
+def read_BOM(f):
+    c = {}
+    bom = pandas.read_excel(f, engine="odf")
+    #print(bom)
+    for index, row in bom.iterrows():
+        infos = {
+                'value': row["Value"],
+                'infos': row["Infos"]
+                }
+        for comp in row["Designator"].split(','):
+            c[comp] = infos
+    return c
+
+def dict_compare(d1, d2):
+    d1_keys = set(d1.keys())
+    d2_keys = set(d2.keys())
+    shared_keys = d1_keys.intersection(d2_keys)
+    added = d2_keys - d1_keys
+    removed = d1_keys - d2_keys
+    modified = {o : (d1[o], d2[o]) for o in shared_keys if d1[o] != d2[o]}
+    same = set(o for o in shared_keys if d1[o] == d2[o])
+    return added, removed, modified, same
+
+def pprint(o):
+    if len(o) > 0:
+         pp.pprint(o)
+    else:
+         print(None)
+
+def compare_netlist(BOM_ref, BOM_new):
+    comp_added, comp_removed, comp_modified, comp_same = dict_compare(BOM_ref, BOM_new)
+
+    print("******************************************************")
+    print("******************************************************")
+    print("Added in BOM:")
+    pprint(comp_added)
+    print("Removed in BOM:")
+    pprint(comp_removed)
+    print("Modified in BOM:")
+    pprint(comp_modified)
+
+
+compare_netlist(read_BOM(args.ref_BOM), read_BOM(args.new_BOM))
+
+
+