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#!/usr/bin/python -u
# -*- coding: utf-8 -*-
from defs import *
from stack import NamespaceStack
from string import StringBlock
from struct import unpack
class AXMLParser():
def __init__(self, reader):
self._reader = reader
magic = reader.readInt()
if magic != CHUNK_AXML_FILE:
raise Exception('Bad Magic Number (0x%08lx)!' % magic)
# chunkSize
reader.skipInt()
self._strings = StringBlock(reader)
self._namespaces = NamespaceStack()
self._operational = True
self.resetEventInfo()
def resetEventInfo(self):
self._event = -1
self._line_number = -1
self._name = -1
self._namespace_uri = -1
self._attributes = None
self._id_attrib = -1
self._class_attrib = -1
self._style_attrib = -1
self._decreaseDepth = False
def next(self):
self.doNext()
return self._event
def doNext(self):
event = self._event
while True:
if self._decreaseDepth:
self._decreaseDepth = False
self._namespaces.decDepth()
# Fake END_DOCUMENT event.
if event == END_TAG and self._namespaces.getDepth() == 1 and self._namespaces.count() == 0:
self._event = END_DOCUMENT
break
if event == START_DOCUMENT:
# Fake event, see CHUNK_XML_START_TAG handler.
chunk = CHUNK_XML_START_TAG
else:
chunk = self._reader.readInt()
if chunk == CHUNK_RESOURCEIDS:
size = self._reader.readInt()
if size < 8 or size % 4 != 0:
raise Exception('Invalid resource ids size (%d).' % size)
self._resource_ids = self._reader.readIntArray(size / 4 - 2)
continue
if chunk < CHUNK_XML_FIRST or chunk > CHUNK_XML_LAST:
raise Exception('Invalid chunk type 0x%08lx.' % chunk)
# Fake START_DOCUMENT event.
if chunk == CHUNK_XML_START_TAG and event == -1:
self._event = START_DOCUMENT
break
# Common header.
self._reader.skipInt() # chunkSize
self._line_number = self._reader.readInt()
self._reader.skipInt() # 0xffffffff
if chunk == CHUNK_XML_START_NAMESPACE or chunk == CHUNK_XML_END_NAMESPACE:
if chunk == CHUNK_XML_START_NAMESPACE:
prefix = self._reader.readInt()
uri = self._reader.readInt()
self._namespaces.push(prefix, uri)
else:
self._reader.skipInt() # prefix
self._reader.skipInt() # uri
self._namespaces.pop()
continue
elif chunk == CHUNK_XML_START_TAG:
self._namespace_uri = self._reader.readInt()
self._name = self._reader.readInt()
self._reader.skipInt() # flags ?
attribs_count = self._reader.readInt()
self._id_attrib = (attribs_count >> 16) - 1
attribs_count &= 0xffff
self._class_attrib = self._reader.readInt()
self._style_attrib = (self._class_attrib >> 16) - 1
self._class_attrib = (self._class_attrib & 0xffff) - 1
self._attributes = self._reader.readIntArray(attribs_count * ATTRIBUTE_LENGHT)
for i in range(ATTRIBUTE_IX_VALUE_TYPE, len(self._attributes), ATTRIBUTE_LENGHT):
self._attributes[i] >>= 24
self._namespaces.incDepth()
self._event = START_TAG
break
elif chunk == CHUNK_XML_END_TAG:
self._namespaceUri = self._reader.readInt()
self._name = self._reader.readInt()
self._event = END_TAG
self._decreaseDepth = True
break
elif chunk == CHUNK_XML_TEXT:
self._name = self._reader.readInt()
self._reader.skipInt() # ???
self._reader.skipInt() # ???
self._event=TEXT
break
else:
raise Exception('Unknown chunck (0x%08lx)' % chunk)
### ESPACES ###
def getNamespacePrefix(self, index):
name = self._namespaces.getPrefix(index)
if name == -1:
return ''
else:
return self._strings.getRaw(name)
def getNamespaceUri(self, index):
name = self._namespaces.getUri(index)
if name == -1:
return ''
else:
return self._strings.getRaw(name)
### NAMES ###
def getTagPrefix(self):
"""Provide the prefix linked to START_TAG or END_TAG."""
name = self._namespaces.findPrefix(self._namespace_uri)
if name == -1:
return ''
else:
return self._strings.getRaw(name) + ':'
def getTagName(self):
"""Provide the name linked to START_TAG or END_TAG."""
if self._name == -1 or (self._event != START_TAG and self._event != END_TAG):
raise Exception('Invalid tag name.')
return self._strings.getRaw(self._name)
def getText(self):
"""Provide the content linked to TEXT."""
if self._name == -1 or self._event != START_TEXT:
raise Exception('Invalid text content.')
return self._strings.getRaw(self._name)
### ATRIBUTES ###
def countAttributes(self):
"""Count the properties of the current tag."""
if self._event != START_TAG:
raise Exception('Invalid event.')
return len(self._attributes) / ATTRIBUTE_LENGHT
def getAttribPrefix(self, index):
"""Get the prefix of a given attribute."""
index *= ATTRIBUTE_LENGHT
if index >= len(self._attributes):
raise Exception('Bad attribute index.')
uri = self._attributes[index + ATTRIBUTE_IX_NAMESPACE_URI]
name = self._namespaces.findPrefix(uri)
if name == -1:
return ''
else:
return self._strings.getRaw(name) + ':'
def getAttribName(self, index):
"""Get the name of a given attribute."""
index *= ATTRIBUTE_LENGHT
if index >= len(self._attributes):
raise Exception('Bad attribute index.')
name = self._attributes[index + ATTRIBUTE_IX_NAME]
if name == -1:
return '???'
else:
return self._strings.getRaw(name)
def getAttribValue(self, index):
"""Get the value of a given attribute."""
index *= ATTRIBUTE_LENGHT
if index >= len(self._attributes):
raise Exception('Bad attribute index.')
vtype = self._attributes[index + ATTRIBUTE_IX_VALUE_TYPE]
vdata = self._attributes[index + ATTRIBUTE_IX_VALUE_DATA]
if vtype == TYPE_NULL:
return '???'
elif vtype == TYPE_REFERENCE:
return '@%s%08X' % (self.getPackage(vdata), vdata)
elif vtype == TYPE_ATTRIBUTE:
return '?%s%08X' % (self.getPackage(vdata), vdata)
if vtype == TYPE_STRING:
vdata = self._attributes[index + ATTRIBUTE_IX_VALUE_STRING]
return self._strings.getRaw(vdata)
elif vtype == TYPE_FLOAT:
return '%f' % unpack('=f', pack('=L', vdata))[0]
elif vtype == TYPE_DIMENSION:
return '%f%s' % (self.complexToFloat(vdata), DIMENSION_UNITS[vdata & COMPLEX_UNIT_MASK])
elif vtype == TYPE_FRACTION:
return '%f%s' % (self.complexToFloat(vdata), FRACTION_UNITS[vdata & COMPLEX_UNIT_MASK])
elif vtype == TYPE_INT_HEX:
return '0x%08x' % vdata
elif vtype == TYPE_INT_BOOLEAN:
if vdata == 0:
return 'false'
else:
return 'true'
elif vtype >= TYPE_FIRST_COLOR_INT and vtype <= TYPE_LAST_COLOR_INT:
return '#%08x' % vdata
elif vtype >= TYPE_FIRST_INT and vtype <= TYPE_LAST_INT:
return str(vdata)
return "<0x%x, 0x%02x>" % (vdata, vtype)
def complexToFloat(self, xcomplex):
return (float)(xcomplex & 0xffffff00) * RADIX_MULTS[(xcomplex >> 4) & 3];
def getPackage(self, id):
if id >> 24 == 1:
return "android:"
else:
return ""
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