Support Linux

quanttp/data/qng_wrapper_windows.py

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+# Copyright (c) 2020 Andika Wasisto
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+
+class QngWrapperWindows:
+
+    def __init__(self):
+        import win32com.client
+        self.qng = win32com.client.Dispatch("QWQNG.QNG")
+
+    def randint32(self):
+        try:
+            return self.qng.RandInt32
+        except:
+            self.qng.Reset()
+            return self.qng.RandInt32
+
+    def randuniform(self):
+        try:
+            return self.qng.RandUniform
+        except:
+            self.qng.Reset()
+            return self.qng.RandUniform
+
+    def randnormal(self):
+        try:
+            return self.qng.RandNormal
+        except:
+            self.qng.Reset()
+            return self.qng.RandNormal
+
+    def randbytes(self, length):
+        try:
+            return self._randbytes_arbitrary_length(length)
+        except:
+            self.qng.Reset()
+            return self._randbytes_arbitrary_length(length)
+
+    def _randbytes_arbitrary_length(self, length):
+        if length <= 8192:
+            return bytes(self.qng.RandBytes(length))
+        else:
+            data = bytearray()
+            for x in range(length // 8192):
+                data.extend(bytearray(self.qng.RandBytes(8192)))
+            bytes_needed = length % 8192
+            if bytes_needed != 0:
+                data.extend(bytearray(self.qng.RandBytes(bytes_needed)))
+            return bytes(data)
+
+    def clear(self):
+        self.qng.Clear()