def parse_path_groups_from_svg_file(filename, callback=None):
""" parse SVG data from a file and return the resulting svg.path objects grouped by layer """
if callback is None:
# we are not running interactively - use big chunks
read_chunk_size = 1 * 1024**3
else:
# read smaller 16 KB chunks (improving responsiveness of the GUI)
read_chunk_size = 64 * 1024**2
target = SVGXMLParser()
parser = xml.etree.ElementTree.XMLParser(target=target)
try:
with open_file_context(filename, "r", True) as svg_file:
while True:
chunk = svg_file.read(read_chunk_size)
if not chunk:
break
parser.feed(chunk)
if callback and callback():
raise AbortOperationException(
"SVGImporter: load model operation was cancelled")
except IOError as exc:
log.error("SVGImporter: Failed to read svg file (%s): %s", filename,
exc)
return
parser.close()
return target.groups
def load_workspace_from_file(self,
filename,
remember_uri=True,
default_content=None):
if remember_uri:
self.last_workspace_uri = pycam.Utils.URIHandler(filename)
self.settings.get("set_last_filename")(filename)
log.info("Loading workspace from file: %s", filename)
try:
with open_file_context(filename, "r", True) as in_file:
content = in_file.read()
except OSError as exc:
if default_content:
content = default_content
else:
log.error("Failed to read workspace file (%s): %s", filename,
exc)
return False
try:
return self.load_workspace_from_description(content)
except PycamBaseException as exc:
log.warning(
"Failed to load workspace description from file (%s): %s",
filename, exc)
if default_content:
log.info("Falling back to default workspace due to load error")
self.load_workspace_from_description(default_content)
return False
def save_workspace_to_file(self, filename, remember_uri=True):
from pycam.Flow.parser import dump_yaml
if remember_uri:
self.last_workspace_uri = pycam.Utils.URIHandler(filename)
self.settings.emit_event("notify-file-opened", filename)
log.info("Storing workspace in file: %s", filename)
try:
with open_file_context(filename, "w", True) as out_file:
dump_yaml(target=out_file)
except OSError as exc:
log.error("Failed to store workspace in file '%s': %s", filename,
exc)
def open_workspace_file(mode="r"):
return open_file_context(get_workspace_filename(), mode, True)
def open_preferences_file(mode="r"):
return open_file_context(get_config_filename(), mode, True)