Refactor python api into separate files and add Enumeration support. Also fixed bugs found with pyflakes

1 files changed, 88 insertions, 0 deletions

diff --git a/python/fileaccessor.py b/python/fileaccessor.py
new file mode 100644
index 00000000..8fec43a1
--- /dev/null
+++ b/python/fileaccessor.py
@@ -0,0 +1,88 @@
+# Copyright (c) 2015-2016 Vector 35 LLC
+#
+# 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.
+
+import traceback
+import ctypes
+
+# Binary Ninja components
+import _binaryninjacore as core
+import log
+
+
+class FileAccessor(object):
+	def __init__(self):
+		self._cb = core.BNFileAccessor()
+		self._cb.context = 0
+		self._cb.getLength = self._cb.getLength.__class__(self._get_length)
+		self._cb.read = self._cb.read.__class__(self._read)
+		self._cb.write = self._cb.write.__class__(self._write)
+
+	def __len__(self):
+		return self.get_length()
+
+	def _get_length(self, ctxt):
+		try:
+			return self.get_length()
+		except:
+			log.log_error(traceback.format_exc())
+			return 0
+
+	def _read(self, ctxt, dest, offset, length):
+		try:
+			data = self.read(offset, length)
+			if data is None:
+				return 0
+			if len(data) > length:
+				data = data[0:length]
+			ctypes.memmove(dest, data, len(data))
+			return len(data)
+		except:
+			log.log_error(traceback.format_exc())
+			return 0
+
+	def _write(self, ctxt, offset, src, length):
+		try:
+			data = ctypes.create_string_buffer(length)
+			ctypes.memmove(data, src, length)
+			return self.write(offset, data.raw)
+		except:
+			log.log_error(traceback.format_exc())
+			return 0
+
+
+class CoreFileAccessor(FileAccessor):
+	def __init__(self, accessor):
+		self._cb.context = accessor.context
+		self._cb.getLength = accessor.getLength
+		self._cb.read = accessor.read
+		self._cb.write = accessor.write
+
+	def get_length(self):
+		return self._cb.getLength(self._cb.context)
+
+	def read(self, offset, length):
+		data = ctypes.create_string_buffer(length)
+		length = self._cb.read(self._cb.context, data, offset, length)
+		return data.raw[0:length]
+
+	def write(self, offset, value):
+		value = str(value)
+		data = ctypes.create_string_buffer(value)
+		return self._cb.write(self._cb.context, offset, data, len(value))