1 files changed, 44 insertions, 0 deletions
diff --git a/src/file.py b/src/file.py
new file mode 100644
index 0000000..4285207
--- /dev/null
+++ b/src/file.py
@@ -0,0 +1,44 @@
+import re, sys, traceback, json
+import phys
+
+file_format_version = 1
+
+def save_system(path, system):
+	ser = dict()
+	ser["version"] = file_format_version
+
+	ser["ignore"] = system.ignore
+	ser["elements"] = []
+	for pol in system.elements:
+		el = {
+			"type": pol.type,
+			"angle": pol.angle,
+			"delta": pol.delta,
+			"ref": pol.ref
+		}
+
+		ser["elements"].append(el)
+
+	with open(path, "w") as fd:
+		fd.write(json.dumps(ser))
+
+def open_system(path):
+	system = phys.System()
+
+	with open(path, "r") as fd:
+		ser = json.loads(fd.read())
+
+	if ser["version"] != file_format_version:
+		raise ValueError("Bad file version: expected %d, found %d" \
+		                 %  (file_format_version, ser["version"]))
+
+	system.ignore = ser["ignore"]
+
+	for el in ser["elements"]:
+		pol = phys.Polarizer(str(el["type"]))
+		pol.angle = float(el["angle"])
+		pol.delta = float(el["delta"])
+		pol.ref = el["ref"]
+		system.elements.append(pol)
+
+	return system
+\ No newline at end of file