Add 'requests' library to third_party.

third_party/requests/packages/charade/codingstatemachine.py

+######################## BEGIN LICENSE BLOCK ########################
+# The Original Code is mozilla.org code.
+#
+# The Initial Developer of the Original Code is
+# Netscape Communications Corporation.
+# Portions created by the Initial Developer are Copyright (C) 1998
+# the Initial Developer. All Rights Reserved.
+#
+# Contributor(s):
+#   Mark Pilgrim - port to Python
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+# 02110-1301  USA
+######################### END LICENSE BLOCK #########################
+
+from .constants import eStart
+from .compat import wrap_ord
+
+
+class CodingStateMachine:
+    def __init__(self, sm):
+        self._mModel = sm
+        self._mCurrentBytePos = 0
+        self._mCurrentCharLen = 0
+        self.reset()
+
+    def reset(self):
+        self._mCurrentState = eStart
+
+    def next_state(self, c):
+        # for each byte we get its class
+        # if it is first byte, we also get byte length
+        # PY3K: aBuf is a byte stream, so c is an int, not a byte
+        byteCls = self._mModel['classTable'][wrap_ord(c)]
+        if self._mCurrentState == eStart:
+            self._mCurrentBytePos = 0
+            self._mCurrentCharLen = self._mModel['charLenTable'][byteCls]
+        # from byte's class and stateTable, we get its next state
+        curr_state = (self._mCurrentState * self._mModel['classFactor']
+                      + byteCls)
+        self._mCurrentState = self._mModel['stateTable'][curr_state]
+        self._mCurrentBytePos += 1
+        return self._mCurrentState
+
+    def get_current_charlen(self):
+        return self._mCurrentCharLen
+
+    def get_coding_state_machine(self):
+        return self._mModel['name']