def readfile(filename: str,
version: str = None,
audit=False) -> Optional[Drawing]:
"""
Use an installed `ODA File Converter`_ to convert a DWG/DXB/DXF file into a temporary DXF file and load
this file by `ezdxf`.
Args:
filename: file to load by ODA File Converter
version: load file as specific DXF version, by default the same version as the source file or
if not detectable the latest by `ezdxf` supported version.
audit: audit source file before loading
"""
infile = Path(filename).absolute()
if not infile.exists():
raise FileNotFoundError(f"No such file or directory: '{infile}'")
in_folder = infile.parent
name = infile.name
ext = infile.suffix.lower()
tmp_folder = Path(temp_path).absolute()
if not tmp_folder.exists():
tmp_folder.mkdir()
dxf_temp_file = (tmp_folder / name).with_suffix('.dxf')
_version = 'ACAD2018'
if ext == '.dxf':
if is_binary_dxf_file(str(infile)):
pass
elif is_dxf_file(str(infile)):
with open(filename, 'rt') as fp:
info = dxf_info(fp)
_version = VERSION_MAP[info.version]
elif ext == '.dwg':
_version = dwg_version(str(infile))
if _version is None:
raise ValueError('Unknown or unsupported DWG version.')
else:
raise ValueError(f"Unsupported file format: '{ext}'")
if version is None:
version = _version
version = map_version(version)
cmd = _odafc_cmd(name,
str(in_folder),
str(tmp_folder),
fmt='DXF',
version=version,
audit=audit)
_execute_odafc(cmd)
if dxf_temp_file.exists():
doc = ezdxf.readfile(str(dxf_temp_file))
dxf_temp_file.unlink()
doc.filename = infile.with_suffix('.dxf')
return doc
return None
def dxf_stream_info(stream: TextIO) -> 'DXFInfo':
""" Reads basic DXF information from a text stream: DXF version, encoding
and handle seed.
"""
from ezdxf.lldxf.validator import dxf_info
info = dxf_info(stream)
# R2007 files and later are always encoded as UTF-8
if info.version >= 'AC1021':
info.encoding = 'utf-8'
return info
def dxf_stream_info(stream: TextIO) -> 'DXFInfo':
"""
Reads basic DXF information from a text stream: DXF version, encoding and handle seed.
Returns:
DXF info object with attributes: version, release, handseed, encoding
"""
from ezdxf.lldxf.validator import dxf_info
info = dxf_info(stream)
if info.version >= 'AC1021': # R2007 files and later are always encoded as UTF-8
info.encoding = 'utf-8'
return info
def checkhandles(stream):
info = dxf_info(stream)
stream.seek(0)
handles = []
iterator = low_level_tagger(stream)
for tag in iterator:
if tag.code in (5, 105):
try:
handle = int(tag.value, 16)
except ValueError:
print('invalid handle at line number %d' % iterator.lineno)
else:
handles.append(handle)
printhandles(handles, info)
def checkhandles(stream):
info = dxf_info(stream)
stream.seek(0)
handles = []
lineno = 1
iterator = ascii_tags_loader(stream, skip_comments=False)
for tag in iterator:
if tag.code in (5, 105):
try:
handle = int(tag.value, 16)
except ValueError:
print('invalid handle at line number %d' % lineno)
else:
handles.append(handle)
lineno += 2
printhandles(handles, info)
def _detect_version(path: str) -> str:
version = 'ACAD2018'
ext = os.path.splitext(path)[1].lower()
if ext == '.dxf':
if is_binary_dxf_file(path):
pass
elif is_dxf_file(path):
with open(path, 'rt') as fp:
info = dxf_info(fp)
version = VERSION_MAP[info.version]
elif ext == '.dwg':
version = dwg_version(path)
if version is None:
raise ValueError('Unknown or unsupported DWG version.')
else:
raise ValueError(f"Unsupported file format: '{ext}'")
return map_version(version)
def _detect_version(path: str) -> str:
version = "ACAD2018"
ext = os.path.splitext(path)[1].lower()
if ext == ".dxf":
if is_binary_dxf_file(path):
pass
elif is_dxf_file(path):
with open(path, "rt") as fp:
info = dxf_info(fp)
version = VERSION_MAP[info.version]
elif ext == ".dwg":
version = dwg_version(path) # type: ignore
if version is None:
raise ValueError("Unknown or unsupported DWG version.")
else:
raise ValueError(f"Unsupported file format: '{ext}'")
return map_version(version)
def get_dxf_info(self) -> None:
info = dxf_info(cast(TextIO, self))
# since DXF R2007 (AC1021) file encoding is always 'utf-8'
self.encoding = info.encoding if info.version < 'AC1021' else 'utf-8'
self.dxfversion = info.version
