check in gacks handle code

[sfa.git] / gacks / gackscalendar.py

diff --git a/gacks/gackscalendar.py b/gacks/gackscalendar.py
new file mode 100644 (file)
index 0000000..33d3af9
--- /dev/null
+++ b/gacks/gackscalendar.py
@@ -0,0 +1,56 @@
+class GacksCalendar:
+    def __init__(self):
+        pass
+
+    def query(self, id, unitStart, unitStop, timeStart, timeStop):
+        pass
+
+    def insert_record(self, item):
+        pass
+
+class GacksListCalendar(GacksCalendar):
+    def __init__(self):
+        self.items = []
+
+    def test_id(x, y):
+        if not x:
+            return True
+        else:
+            return (x == y)
+
+    def test_lesser(x, y):
+        if not x:
+            return True
+        else if y==INFINITY:
+            return True
+        else:
+            return (x<y)
+
+    def test_greater_equal(x, y):
+        if not x:
+            return True
+        else if x==INFINITY:
+            return True
+        else if y==INFINITY:
+            return False
+        else:
+            return (x>=y)
+
+    def query(self, id, unitStart=0, unitStop=INFINITY, timeStart=0, timeStop=INFINITY):
+        list = []
+        for item in self.items:
+            if test_id(id, item.id) and
+               test_lesser(unitStart, item.unitStop) and
+               test_greater_equal(unitStop, item.unitStart) and
+               test_lesser(timeStart, item.timeStop) and
+               test_greater_equal(timeStop, item.timeStart):
+                 list = list + item
+        return list
+
+    def insert_record(self, item):
+        conflicts = self.query(item.id, item.unitStart, item.unitStop, item.timeStart, item.timeStop)
+        for conflict in conflicts:
+            self.items.remove(conflict)
+
+        self.items.append(item)
+