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# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild
from pkg_resources import parse_version
from .kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO
import collections
if parse_version(ks_version) < parse_version('0.7'):
raise Exception("Incompatible Kaitai Struct Python API: 0.7 or later is required, but you have %s" % (ks_version))
class Ico(KaitaiStruct):
"""Microsoft Windows uses specific file format to store applications
icons - ICO. This is a container that contains one or more image
files (effectively, DIB parts of BMP files or full PNG files are
contained inside).
.. seealso::
Source - https://msdn.microsoft.com/en-us/library/ms997538.aspx
"""
SEQ_FIELDS = ["magic", "num_images", "images"]
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self._debug = collections.defaultdict(dict)
def _read(self):
self._debug['magic']['start'] = self._io.pos()
self.magic = self._io.ensure_fixed_contents(b"\x00\x00\x01\x00")
self._debug['magic']['end'] = self._io.pos()
self._debug['num_images']['start'] = self._io.pos()
self.num_images = self._io.read_u2le()
self._debug['num_images']['end'] = self._io.pos()
self._debug['images']['start'] = self._io.pos()
self.images = [None] * (self.num_images)
for i in range(self.num_images):
if not 'arr' in self._debug['images']:
self._debug['images']['arr'] = []
self._debug['images']['arr'].append({'start': self._io.pos()})
_t_images = self._root.IconDirEntry(self._io, self, self._root)
_t_images._read()
self.images[i] = _t_images
self._debug['images']['arr'][i]['end'] = self._io.pos()
self._debug['images']['end'] = self._io.pos()
class IconDirEntry(KaitaiStruct):
SEQ_FIELDS = ["width", "height", "num_colors", "reserved", "num_planes", "bpp", "len_img", "ofs_img"]
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self._debug = collections.defaultdict(dict)
def _read(self):
self._debug['width']['start'] = self._io.pos()
self.width = self._io.read_u1()
self._debug['width']['end'] = self._io.pos()
self._debug['height']['start'] = self._io.pos()
self.height = self._io.read_u1()
self._debug['height']['end'] = self._io.pos()
self._debug['num_colors']['start'] = self._io.pos()
self.num_colors = self._io.read_u1()
self._debug['num_colors']['end'] = self._io.pos()
self._debug['reserved']['start'] = self._io.pos()
self.reserved = self._io.ensure_fixed_contents(b"\x00")
self._debug['reserved']['end'] = self._io.pos()
self._debug['num_planes']['start'] = self._io.pos()
self.num_planes = self._io.read_u2le()
self._debug['num_planes']['end'] = self._io.pos()
self._debug['bpp']['start'] = self._io.pos()
self.bpp = self._io.read_u2le()
self._debug['bpp']['end'] = self._io.pos()
self._debug['len_img']['start'] = self._io.pos()
self.len_img = self._io.read_u4le()
self._debug['len_img']['end'] = self._io.pos()
self._debug['ofs_img']['start'] = self._io.pos()
self.ofs_img = self._io.read_u4le()
self._debug['ofs_img']['end'] = self._io.pos()
@property
def img(self):
"""Raw image data. Use `is_png` to determine whether this is an
embedded PNG file (true) or a DIB bitmap (false) and call a
relevant parser, if needed to parse image data further.
"""
if hasattr(self, '_m_img'):
return self._m_img if hasattr(self, '_m_img') else None
_pos = self._io.pos()
self._io.seek(self.ofs_img)
self._debug['_m_img']['start'] = self._io.pos()
self._m_img = self._io.read_bytes(self.len_img)
self._debug['_m_img']['end'] = self._io.pos()
self._io.seek(_pos)
return self._m_img if hasattr(self, '_m_img') else None
@property
def png_header(self):
"""Pre-reads first 8 bytes of the image to determine if it's an
embedded PNG file.
"""
if hasattr(self, '_m_png_header'):
return self._m_png_header if hasattr(self, '_m_png_header') else None
_pos = self._io.pos()
self._io.seek(self.ofs_img)
self._debug['_m_png_header']['start'] = self._io.pos()
self._m_png_header = self._io.read_bytes(8)
self._debug['_m_png_header']['end'] = self._io.pos()
self._io.seek(_pos)
return self._m_png_header if hasattr(self, '_m_png_header') else None
@property
def is_png(self):
"""True if this image is in PNG format."""
if hasattr(self, '_m_is_png'):
return self._m_is_png if hasattr(self, '_m_is_png') else None
self._m_is_png = self.png_header == b"\x89\x50\x4E\x47\x0D\x0A\x1A\x0A"
return self._m_is_png if hasattr(self, '_m_is_png') else None
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