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June 5, 2014 20:34
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h5debug
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| #!/usr/bin/env python | |
| ''' | |
| @author Luke Campbell | |
| @file ion/util/h5_graph.py | |
| ''' | |
| from struct import unpack | |
| from StringIO import StringIO | |
| import os | |
| import logging | |
| logger = logging.getLogger('h5debug') | |
| def read_num(buf): | |
| size = len(buf) | |
| if size == 1: | |
| return unpack('B', buf)[0] | |
| if size == 2: | |
| return unpack('H', buf)[0] | |
| if size == 4: | |
| return unpack('I', buf)[0] | |
| if size == 8: | |
| return unpack('Q', buf)[0] | |
| class StringBuffer(StringIO): | |
| def remaining(self): | |
| return self.len - self.tell() | |
| class HDFFile: | |
| superblock = None | |
| def __init__(self, path): | |
| self.f = open(path) | |
| self.superblock = SuperBlock(self.f) | |
| def __enter__(self): | |
| return self | |
| def __exit__(self, type, value, traceback): | |
| self.close() | |
| def close(self): | |
| self.close() | |
| def out(context,s): | |
| buf = '' | |
| for i in xrange(context.indent_guide): | |
| buf += ' ' | |
| buf += s | |
| if logger.isEnabledFor(logging.INFO): | |
| logger.info(buf) | |
| class HDFContext: | |
| indent_guide = 0 | |
| btrees_loaded = {} | |
| leaves_loaded = {} | |
| K=0 | |
| offset_size=8 | |
| length_size=8 | |
| file_object=None | |
| name_heaps=[] | |
| object_eof=[] | |
| def __init__(self, file_object, offset_size, length_size, K): | |
| self.indent_guide = 0 | |
| self.btrees_loaded = {} | |
| self.leaves_loaded = {} | |
| self.file_object = file_object | |
| self.offset_size = offset_size | |
| self.length_size = length_size | |
| self.K = K | |
| self.name_heaps = [] | |
| self.object_eof = [] | |
| def indent(self): | |
| out(self, '{') | |
| self.indent_guide += 1 | |
| def unindent(self): | |
| self.indent_guide -= 1 | |
| out(self, '}') | |
| def align(file_object): # Align on word boundary | |
| # Padding offset | |
| if (file_object.tell() % 8) != 0: | |
| file_object.read(8 - (file_object.tell() % 8)) | |
| class SuperBlock: | |
| offset=None | |
| format_signature=None | |
| superblock_version=None | |
| file_free_space_version=None | |
| root_group_symbol_tree_version=None | |
| shared_header_message_format_version=None | |
| offset_size=None | |
| length_size=None | |
| group_leaf_node_k=None | |
| group_internal_node_k=None | |
| file_consistency_flags=None | |
| indexed_storage_internal_node_k=None | |
| base_address=None | |
| address_of_file_free_space=None | |
| eof_address=None | |
| driver_info_block_address=None | |
| root_group_symbol_table_offset=None | |
| file_object=None | |
| symbol_table=None | |
| def __init__(self,file_object): | |
| self.offset = file_object.tell() | |
| self.format_signature = file_object.read(8) | |
| self.superblock_version = read_num(file_object.read(1)) | |
| self.file_free_space_version = read_num(file_object.read(1)) | |
| self.root_group_symbol_tree_version = read_num(file_object.read(1)) | |
| file_object.read(1) # Reserved | |
| self.shared_header_message_format_version = read_num(file_object.read(1)) | |
| self.offset_size = read_num(file_object.read(1)) | |
| self.length_size = read_num(file_object.read(1)) | |
| file_object.read(1) # Reserved | |
| self.group_leaf_node_k = read_num(file_object.read(2)) | |
| self.group_internal_node_k = read_num(file_object.read(2)) | |
| self.file_consistency_flags = read_num(file_object.read(4)) | |
| assert self.format_signature == '\x89HDF\x0d\x0a\x1a\x0a' | |
| if self.superblock_version not in (0x01, 0x00): | |
| raise IOError("Unsupported HDF5 Superblock Version: %s" % self.superblock_version) | |
| if self.file_free_space_version != 0x00: | |
| raise IOError("File Free-Space information version is incorrect: %s" % self.file_free_space_version) | |
| if self.root_group_symbol_tree_version != 0x00: | |
| raise IOError("Root Group Symbol Table Version is incorrect: %s" % self.root_group_symbol_tree_version) | |
| if self.shared_header_message_format_version != 0x00: | |
| raise IOError("Shared Header Message Format Version is incorrect: %s" % self.shared_header_message_format_version) | |
| if self.offset_size % 2: | |
| raise IOError("Impossible offset size: %s" % self.offset_size) | |
| if self.length_size % 2: | |
| raise IOError("Impossible length size: %s" % self.length_size) | |
| if self.superblock_version == 0x01: | |
| self.indexed_storage_internal_node_k = read_num(file_object.read(2)) | |
| file_object.read(2) # Reserved | |
| self.base_address = read_num(file_object.read(self.offset_size)) | |
| self.address_of_file_free_space = read_num(file_object.read(self.offset_size)) | |
| self.eof_address = read_num(file_object.read(self.offset_size)) | |
| self.driver_info_block_address = read_num(file_object.read(self.offset_size)) | |
| st = os.lstat(file_object.name) | |
| if st.st_size < self.eof_address: | |
| raise IOError("EOF exceeds actual file address space: %s" % self.eof_address) | |
| if st.st_size-1 != self.eof_address: | |
| logger.warning("Superblock EOF != File EOF (%s != %s)" % (hex(self.eof_address), hex(st.st_size))) | |
| if self.address_of_file_free_space == 0xFFFFFFFFFFFFFFFFL: | |
| self.address_of_file_free_space = None | |
| if self.driver_info_block_address == 0xFFFFFFFFFFFFFFFFL: | |
| self.driver_info_block_address = None | |
| self.root_group_symbol_table_offset = file_object.tell() | |
| self.context = HDFContext(file_object, self.offset_size, self.length_size, self.group_leaf_node_k) | |
| context = self.context | |
| out(context,'Reading superblock at: %s' % hex(self.offset)) | |
| context.indent() | |
| out(context,'Signature Matches HDF5') | |
| out(context,'Superblock Version: %s' % self.superblock_version) | |
| out(context,'Offset Size (haddr_t): %s' % self.offset_size) | |
| out(context,'Length Size (hsize_t): %s' % self.length_size) | |
| out(context,'Group Leaf Node K: %s' % self.group_leaf_node_k) | |
| out(context,'Group Internal Node K: %s' % self.group_internal_node_k) | |
| out(context,'Base Address Offset: %s' % self.base_address) | |
| out(context,'End-of-File Address: %s' % hex(self.eof_address)) | |
| out(context,'Address of File Free Space: %s' % self.address_of_file_free_space or 'NULL') | |
| out(context,'Driver Info Block Address: %s' % self.driver_info_block_address or 'NULL') | |
| if (self.file_consistency_flags & 0x1): | |
| out(context,'File Consistency Flag: Opened for Write-Access') | |
| if (self.file_consistency_flags & 0x2): | |
| out(context,'File Consistency Flag: File Verified') | |
| self.symbol_table = SymbolTableEntry(self.context) | |
| context.unindent() | |
| class SymbolTableEntry: | |
| offset=None | |
| link_name_offset=None | |
| object_header_address=None | |
| cache_type=None | |
| scratch_pad=None | |
| def __init__(self, context): | |
| file_object = context.file_object | |
| self.offset = context.file_object.tell() | |
| out(context,"Reading Symbol Table @ %s" % hex(self.offset)) | |
| context.indent() | |
| buf = StringBuffer(file_object.read(context.offset_size * 2)) | |
| self.link_name_offset = read_num(buf.read(context.offset_size)) | |
| out(context,'Link Name Offset: %s' % hex(self.link_name_offset)) | |
| self.object_header_address = read_num(buf.read(context.offset_size)) | |
| out(context,'Object Header Address: %s' % hex(self.object_header_address)) | |
| self.cache_type = read_num(file_object.read(4)) | |
| file_object.read(4) # Reserved / Unused space | |
| out(context,'Cache Type: %s' % self.cache_type) | |
| self.scratch_pad = StringBuffer(file_object.read(16)) | |
| end_of_entry = file_object.tell() | |
| # Get the name from the previous named heap since this symbol belongs to its parent not itself | |
| self.link_name = '' | |
| if context.name_heaps: | |
| file_object.seek(context.name_heaps[-1].data_segment_addr + self.link_name_offset) | |
| done=False | |
| while not done: | |
| buf = file_object.read(8) | |
| for i in buf: | |
| if i == '\0': | |
| done=True | |
| break | |
| self.link_name += i | |
| if self.link_name == '': | |
| out(context,'Link Name: /') | |
| else: | |
| out(context,'Link Name: %s' % self.link_name) | |
| if self.cache_type == 0x0: | |
| file_object.seek(self.object_header_address) | |
| self.object_header = ObjectHeader(context) | |
| if self.cache_type == 0x01: | |
| out(context,'Cache Type: Group Objects Head') | |
| self.b_tree_addr = read_num(self.scratch_pad.read(context.offset_size)) | |
| self.name_heap_addr = read_num(self.scratch_pad.read(context.offset_size)) | |
| out(context,'B-Tree Address: %s' % hex(self.b_tree_addr)) | |
| out(context,'Name-Heap Address: %s' % hex(self.name_heap_addr)) | |
| file_object.seek(self.name_heap_addr) | |
| self.local_heap = LocalHeap(context) | |
| # Push the heap onto the context queue | |
| context.name_heaps.append(self.local_heap) | |
| file_object.seek(self.object_header_address) | |
| self.object_header = ObjectHeader(context) | |
| file_object.seek(self.b_tree_addr) | |
| if self.b_tree_addr not in context.btrees_loaded: | |
| self.b_tree = BlinkTreeNode(context) | |
| # Pop off the heap, no one else should use it | |
| context.name_heaps.pop() | |
| if self.cache_type == 0x02: | |
| raise NotImplementedError('Not implemeneted') | |
| file_object.seek(end_of_entry) | |
| context.unindent() | |
| class ObjectHeader: | |
| version=None | |
| number_of_header_message=None | |
| reference_count=None | |
| header_size=None | |
| offset=None | |
| messages=[] | |
| def __init__(self, context): | |
| file_object = context.file_object | |
| self.offset = file_object.tell() | |
| out(context,'Reading Data Object Header @ %s' % hex(self.offset)) | |
| context.indent() | |
| self.version = read_num(file_object.read(1)) | |
| out(context,'Version: %s' % self.version) | |
| file_object.read(1) # Reserved | |
| self.number_of_header_message = read_num(file_object.read(2)) | |
| out(context,'Number of messages: %s' % self.number_of_header_message) | |
| self.reference_count = read_num(file_object.read(4)) | |
| out(context,'Reference count: %s' % self.reference_count) | |
| self.header_size = read_num(file_object.read(4)) | |
| out(context,'Header Size: %s' % self.header_size) | |
| context.object_eof.append(self.header_size + file_object.tell()) | |
| for i in xrange(self.number_of_header_message): | |
| if file_object.tell() < context.object_eof[-1]: | |
| m = HeaderMessage(context) | |
| self.messages.append(m) | |
| else: | |
| out(context, "Message # > Header Size") | |
| context.unindent() | |
| context.object_eof.pop() | |
| class HeaderMessage: | |
| mtype=None | |
| size=None | |
| flags=None | |
| data=None | |
| def __init__(self, context): | |
| # Align file to nearest word | |
| file_object = context.file_object | |
| align(file_object) | |
| out(context,'Object Header @ %s' % hex(file_object.tell()) ) | |
| context.indent() | |
| self.mtype = read_num(file_object.read(2)) | |
| out(context,'Type: %s' % hex(self.mtype)) | |
| self.size = read_num(file_object.read(2)) | |
| out(context,'Size: %s' % self.size) | |
| self.flags = read_num(file_object.read(1)) | |
| file_object.read(3) # Reserved | |
| end_offset = file_object.tell() + self.size | |
| if self.mtype == 0x00: # NIL Block | |
| out(context,'Nil Block') | |
| elif self.mtype == 0x01: | |
| self.dataspace_message = DataspaceMessage(context) | |
| elif self.mtype == 0x03: | |
| self.datatype_message = DatatypeMessage(context) | |
| elif self.mtype == 0x05: | |
| self.fill_value_message = FillValueMessage(context) | |
| elif self.mtype == 0x0010: # Continuation block | |
| self.continuation = ContinuationMessage(context) | |
| context.object_eof[-1] = self.continuation.continuation_length + self.continuation.continuation_offset | |
| # Go to the offset | |
| file_object.seek(self.continuation.continuation_offset) | |
| elif self.mtype == 0x0011: | |
| self.symbol_table_message = SymbolTableMessage(context) | |
| elif self.mtype == 0x000C: | |
| self.attr = AttributeMessage(context) | |
| if self.attr.is_vlen_str(): | |
| foffset = file_object.tell() | |
| file_object.seek(self.attr.global_heap_addr) | |
| global_heap = GlobalHeap(context) | |
| self.attr.vlen_str = global_heap.objects[ self.attr.global_heap_index ].data | |
| file_object.seek(foffset) | |
| out(context,'Vlen-str Value: %s' % self.attr.vlen_str) | |
| else: | |
| out(context,'Unknown type') | |
| file_object.read(self.size) # | |
| if self.mtype != 0x0010: | |
| file_object.seek(end_offset) # Properly move to the end even if all the fields weren't read | |
| context.unindent() | |
| class SymbolTableMessage: | |
| btree_addr = None | |
| local_heap_addr = None | |
| offset = None | |
| def __init__(self, context): | |
| file_object = context.file_object | |
| self.offset = file_object.tell() | |
| out(context,"Symbol Table Message @ %s" % hex(self.offset)) | |
| context.indent() | |
| self.btree_addr = read_num(file_object.read(context.offset_size)) | |
| self.local_heap_addr = read_num(file_object.read(context.offset_size)) | |
| out(context,"B-Tree Address: %s" % hex(self.btree_addr)) | |
| out(context,"Local Heap Address: %s" % hex(self.local_heap_addr)) | |
| foffset = file_object.tell() | |
| file_object.seek(self.btree_addr) | |
| if self.btree_addr not in context.btrees_loaded: | |
| self.btree = BlinkTreeNode(context) | |
| file_object.seek(foffset) | |
| context.unindent() | |
| class AttributeMessage: | |
| offset = None | |
| version = None | |
| name_size = None | |
| datatype_size = None | |
| dataspace_size = None | |
| name=None | |
| datatype=None | |
| dataspace=None | |
| data=None | |
| def __init__(self, context): | |
| file_object = context.file_object | |
| out(context,'Attribute Message') | |
| context.indent() | |
| self.version = read_num(file_object.read(1)) | |
| file_object.read(1) # Reserved | |
| self.name_size = read_num(file_object.read(2)) | |
| self.datatype_size = read_num(file_object.read(2)) | |
| self.dataspace_size = read_num(file_object.read(2)) | |
| self.name = file_object.read(self.name_size) | |
| align(file_object) | |
| out(context,'Attribute Version: %s' % self.version) | |
| out(context,'Attribute Name: %s' % self.name) | |
| foffset = file_object.tell() | |
| self.datatype = DatatypeMessage(context) | |
| file_object.seek(foffset + self.datatype_size) | |
| align(file_object) | |
| foffset = file_object.tell() | |
| self.dataspace = DataspaceMessage(context) | |
| file_object.seek(foffset + self.dataspace_size) | |
| align(file_object) | |
| if self.datatype.dt_class == 0x9 and self.datatype.vlen_type == 'string': | |
| slen = read_num(file_object.read(4)) | |
| self.global_heap_addr = read_num(file_object.read(context.offset_size)) | |
| out(context,'Global Heap Addr: %s' % hex(self.global_heap_addr)) | |
| self.global_heap_index = read_num(file_object.read(4)) | |
| out(context,'Global Heap Object: %s' % hex(self.global_heap_index)) | |
| out(context,'String Length: %s' % slen) | |
| if self.datatype.dt_class == 0x3: | |
| dim_len = self.dataspace.dims[0] | |
| self.data = [file_object.read(self.datatype.size) for i in xrange(dim_len)] | |
| out(context,'Data: %s' % self.data) | |
| context.unindent() | |
| def is_vlen_str(self): | |
| return (self.datatype.dt_class == 0x9 and self.datatype.vlen_type == 'string') | |
| class BlinkTreeNode: | |
| offset=None | |
| signature=None | |
| node_type=None | |
| node_level=None | |
| entries_used=None | |
| left_addr=None | |
| right_addr=None | |
| keys=[] | |
| def __init__(self, context): | |
| file_object = context.file_object | |
| self.offset = file_object.tell() | |
| if self.offset in context.btrees_loaded: | |
| raise Exception('Circular Dependency Detected') | |
| context.btrees_loaded[self.offset] = 1 | |
| out(context,'Reading B-Tree @ %s' % hex(self.offset)) | |
| context.indent() | |
| self.signature = unpack('4s', file_object.read(4))[0] | |
| assert self.signature == 'TREE' | |
| self.node_type = read_num(file_object.read(1)) | |
| self.node_level = read_num(file_object.read(1)) | |
| self.entries_used = read_num(file_object.read(2)) | |
| self.left_addr = read_num(file_object.read(context.offset_size)) | |
| self.right_addr = read_num(file_object.read(context.offset_size)) | |
| out(context,'Node Level: %s' % hex(self.node_level)) | |
| out(context,'Entries Used: %s' % hex(self.entries_used)) | |
| out(context,'Left Address: %s' % hex(self.left_addr)) | |
| out(context,'Right Address: %s' % hex(self.right_addr)) | |
| if self.left_addr == 0xffffffffffffffffL: | |
| self.left_addr = None | |
| if self.right_addr == 0xffffffffffffffffL: | |
| self.right_addr = None | |
| if self.node_type == 0: | |
| out(context,'Node Type: Group Node') | |
| for i in xrange(context.K): | |
| key = read_num(file_object.read(context.length_size)) | |
| out(context,'Key %s: %s' % (i,hex(key))) | |
| child = read_num(file_object.read(context.offset_size)) | |
| out(context,'Child %s: %s' % (i,hex(child))) | |
| if child != 0x0: | |
| step = file_object.tell() | |
| file_object.seek(child) # GO to the child offset | |
| identifier = file_object.read(4) | |
| file_object.seek(child) | |
| if identifier == 'TREE': | |
| if file_object.tell() not in context.btrees_loaded: | |
| BlinkTreeNode(context) | |
| if identifier == 'SNOD': | |
| if file_object.tell() not in context.leaves_loaded: | |
| BlinkTreeLeaf(context) | |
| file_object.seek(step) | |
| elif self.node_type == 1: | |
| out(context,'Node Type: Chunked raw Data Node') | |
| context.unindent() | |
| class BlinkTreeLeaf: | |
| offset = None | |
| signature = None | |
| version = None | |
| symbol_number = None | |
| def __init__(self, context): | |
| file_object = context.file_object | |
| self.offset = file_object.tell() | |
| if self.offset in context.leaves_loaded: | |
| raise Exception('Circular Dependencey') | |
| context.leaves_loaded[self.offset] = 1 | |
| self.signature = file_object.read(4) | |
| assert self.signature == 'SNOD' | |
| out(context,'B-Tree Leaf @ %s' % hex(self.offset)) | |
| context.indent() | |
| self.version = read_num(file_object.read(1)) | |
| out(context,'Version: %s' % self.version) | |
| file_object.read(1) # Reserved | |
| self.symbol_number = read_num(file_object.read(2)) | |
| out(context,'Number of Symbols: %s' % self.symbol_number) | |
| for i in xrange(self.symbol_number): | |
| symbol = SymbolTableEntry(context) | |
| context.unindent() | |
| class LocalHeap: | |
| offset=None | |
| signature=None | |
| version=None | |
| dss=None | |
| offset_to_head_of_free=None | |
| data_segment_addr=None | |
| def __init__(self, context): | |
| file_object = context.file_object | |
| self.offset = file_object.tell() | |
| out(context,'Reading local heap @ %s' % hex(self.offset)) | |
| context.indent() | |
| self.signature = unpack('4s', file_object.read(4))[0] | |
| assert self.signature == 'HEAP' | |
| self.version = read_num(file_object.read(1)) | |
| file_object.read(3) # Reserved | |
| self.dss = read_num(file_object.read(context.length_size)) | |
| self.offset_to_head_of_free = read_num(file_object.read(context.length_size)) | |
| self.data_segment_addr = read_num(file_object.read(context.offset_size)) | |
| out(context,'Data segment starts @ %s' % hex(self.data_segment_addr)) | |
| out(context,'Data segment size: %s' % self.dss) | |
| context.unindent() | |
| class DatatypeMessage: | |
| dt_class=None | |
| version = None | |
| flags = None | |
| size = None | |
| properties = None | |
| def __init__(self, context): | |
| file_object = context.file_object | |
| n = read_num(file_object.read(1)) | |
| self.dt_class = (n & 0x0F) | |
| self.version = (n % 0xF0) >> 4 | |
| out(context,'Datatype Message') | |
| context.indent() | |
| out(context,'Version: %s' % self.version) | |
| out(context,'Class: %s' % self.dt_class) | |
| bm1 = read_num(file_object.read(1)) | |
| bm2 = read_num(file_object.read(1)) | |
| bm3 = read_num(file_object.read(1)) | |
| self.size = read_num(file_object.read(4)) | |
| out(context,'Size: %s' % self.size) | |
| if self.dt_class == 0x0: | |
| out(context,'Fixed Point Data type') | |
| self.byte_order = bm1 & 0x1 | |
| self.padding_type = (bm1 & 0x6) >> 1 | |
| self.signed = (bm1 & 0x8) >> 3 | |
| out(context,'Byte order: %s' % self.byte_order) | |
| out(context, 'Padding: %s' %self.padding_type) | |
| out(context, 'Signed: %s' %self.signed) | |
| self.bit_offset = read_num(file_object.read(2)) | |
| self.bit_precision = read_num(file_object.read(2)) | |
| if self.dt_class == 0x3: # String | |
| out(context,'Fixed Length String') | |
| flag1 = bm1 & 0xF | |
| if flag1 == 0x0: | |
| self.str_padding = 'null-terminate' | |
| elif flag1 == 0x1: | |
| self.str_padding = 'null-pad' | |
| elif flag1 == 0x2: | |
| self.str_padding = 'space-pad' | |
| else: | |
| self.str_padding = 'reserved' | |
| flag2 = (bm1 & 0xF0) >> 4 | |
| if flag2 == 0x0: | |
| self.char_set = 'ASCII' | |
| elif flag2 == 0x1: | |
| self.char_set = 'UTF8' | |
| else: | |
| self.char_set = 'reserved' | |
| out(context,'String-Padding: %s' % self.str_padding) | |
| out(context,'String-Charset: %s' % self.char_set) | |
| if self.dt_class == 0x9: | |
| out(context, 'Variable Length Data type') | |
| flag1 = bm1 & 0xF | |
| if flag1 == 0: | |
| self.vlen_type = 'sequence' | |
| elif flag1 == 1: | |
| self.vlen_type = 'string' | |
| else: | |
| self.vlen_type = 'reserved' | |
| flag2 = (bm1 & 0xF0) >> 4 | |
| if flag2 == 0: | |
| self.vlen_padding = 'null-terminate' | |
| elif flag2 == 1: | |
| self.vlen_padding = 'null-pad' | |
| elif flag2 == 2: | |
| self.vlen_padding = 'space-pad' | |
| else: | |
| self.vlen_padding = 'reserved' | |
| flag3 = bm2 & 0xF | |
| if flag3 == 0: | |
| self.char_set = 'ASCII' | |
| elif flag3 == 1: | |
| self.char_set = 'UTF8' | |
| else: | |
| self.char_set = 'reserved' | |
| out(context,'VLen-Type: %s' % self.vlen_type) | |
| out(context,'VLen-Padding: %s' % self.vlen_padding) | |
| out(context,'Charset: %s' % self.char_set) | |
| self.inner_datatype = DatatypeMessage(context) | |
| context.unindent() | |
| class DataspaceMessage: | |
| version=None | |
| dimensionality=None | |
| flags=None | |
| dims=[] | |
| def __init__(self, context): | |
| file_object = context.file_object | |
| out(context,'Dataspace Message') | |
| context.indent() | |
| self.dims = [] | |
| self.version = read_num(file_object.read(1)) | |
| self.dimensionality = read_num(file_object.read(1)) | |
| self.flags = read_num(file_object.read(1)) | |
| file_object.read(5) # Reserved | |
| out(context, 'Dataspace Version: %s' % self.version) | |
| out(context, 'Dims: %s' % self.dimensionality) | |
| if (self.flags & 0x1) == 0x1: | |
| out(context, 'Maximum dims are present') | |
| if (self.flags & 0x2) == 0x1: | |
| out(context, 'Permutation indices are present') | |
| for dim in xrange(self.dimensionality): | |
| dim_len = read_num(file_object.read(context.length_size)) | |
| self.dims.append(dim_len) | |
| out(context,'Dim %s Length: %s' % (dim, dim_len)) | |
| if (self.flags & 0x1) == 0x1: | |
| for dim in xrange(self.dimensionality): | |
| dim_len = read_num(file_object.read(context.length_size)) | |
| out(context,'Dim %s Max Length: %s' % (dim, dim_len)) | |
| if (self.flags & 0x2) == 0x1: | |
| for dim in xrange(self.dimensionality): | |
| dim_len = read_num(file_object.read(context.length_size)) | |
| out(context,'Dim %s Permutation Index Length: %s' % (dim, dim_len)) | |
| context.unindent() | |
| class GlobalHeap: | |
| offset = None | |
| signature=None | |
| version=None | |
| collection_size=None | |
| object_offset = None | |
| objects = {} | |
| def __init__(self, context): | |
| file_object = context.file_object | |
| out(context,'Global Heap') | |
| context.indent() | |
| self.offset = file_object.tell() | |
| self.signature = file_object.read(4) | |
| assert self.signature == 'GCOL' | |
| self.version = read_num(file_object.read(1)) | |
| out(context,'Version: %s' %self.version) | |
| file_object.read(3) # Reserved | |
| self.collection_size = read_num(file_object.read(context.length_size)) | |
| self.object_offset = file_object.tell() | |
| while True: | |
| align(file_object) | |
| gho = GlobalHeapObject(context) | |
| self.objects[gho.object_index] = gho | |
| if gho.object_index == 0: | |
| break | |
| context.unindent() | |
| class GlobalHeapObject: | |
| object_index=None | |
| reference_count=None | |
| object_size=None | |
| data=None | |
| def __init__(self, context): | |
| file_object = context.file_object | |
| out(context,'Global Heap Object') | |
| context.indent() | |
| out(context, 'Global Heap Object') | |
| self.object_index = read_num(file_object.read(2)) | |
| out(context, 'Index: %s' %self.object_index) | |
| self.reference_count = read_num(file_object.read(2)) | |
| file_object.read(4) # Reserved | |
| self.object_size = read_num(file_object.read(context.length_size)) | |
| if self.object_index > 0: | |
| self.data = file_object.read(self.object_size) | |
| context.unindent() | |
| class ContinuationMessage: | |
| continuation_offset=None | |
| continuation_length=None | |
| def __init__(self, context): | |
| file_object = context.file_object | |
| out(context,'Continuation Block') | |
| context.indent() | |
| self.continuation_offset = read_num(file_object.read(context.offset_size)) | |
| self.continuation_length = read_num(file_object.read(context.length_size)) | |
| out(context,'Continuation Offset: %s' % hex(self.continuation_offset)) | |
| out(context,'Continuation Length: %s' % hex(self.continuation_length)) | |
| context.unindent() | |
| class FillValueMessage: | |
| version=None | |
| space_alloc_time=None | |
| write_time=None | |
| defined=None | |
| size=None | |
| fill_value=None | |
| def __init__(self, context): | |
| file_object = context.file_object | |
| out(context,'Fill Value Message') | |
| context.indent() | |
| self.version = read_num(file_object.read(1)) | |
| out(context,'Version: %s' % self.version) | |
| self.space_alloc_time = read_num(file_object.read(1)) | |
| out(context,'Space Allocation Time: %s' % self.space_alloc_time) | |
| self.write_time = read_num(file_object.read(1)) | |
| out(context,'Write Time: %s' % self.write_time) | |
| self.defined = read_num(file_object.read(1)) | |
| out(context,'Defined: %s' % self.defined) | |
| if not (self.version > 1 and self.defined == 0): | |
| self.size = read_num(file_object.read(4)) | |
| out(context,'Size: %s' % self.size) | |
| self.fill_value = file_object.read(self.size) | |
| context.unindent() |
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