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make presentationmanager parsing more error resilient

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This commit is contained in:
Joel Beckmeyer 2022-04-04 17:00:28 -04:00
parent 23b58620ca
commit 11d35e8a6e
1 changed files with 42 additions and 29 deletions
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71
openlp/plugins/songs/lib/importers/presentationmanager.py
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@ -46,35 +46,7 @@ class PresentationManagerImport(SongImport):
if self.stop_import_flag:
return
self.import_wizard.increment_progress_bar(WizardStrings.ImportingType.format(source=file_path.name))
try:
tree = etree.parse(str(file_path), parser=etree.XMLParser(recover=True))
except etree.XMLSyntaxError:
# Try to detect encoding and use it
encoding = get_file_encoding(file_path)
# Open file with detected encoding and remove encoding declaration
text = file_path.read_text(encoding=encoding)
text = re.sub(r'.+\?>\n', '', text)
try:
tree = etree.fromstring(text, parser=etree.XMLParser(recover=True))
except ValueError:
log.exception('XML syntax error in file {name}'.format(name=file_path))
self.log_error(file_path,
translate('SongsPlugin.PresentationManagerImport',
'File is not in XML-format, which is the only format supported.'))
continue
file_str = etree.tostring(tree)
if not file_str:
log.exception('Could not find XML in file {name}'.format(name=file_path))
self.log_error(file_path, translate('SongsPlugin.PresentationManagerImport',
'File is not in XML-format, which is the only format supported.'))
continue
root = objectify.fromstring(file_str)
try:
self.process_song(root, file_path)
except AttributeError:
log.exception('XML syntax error in file {name}'.format(name=file_path))
self.log_error(file_path, translate('SongsPlugin.PresentationManagerImport',
'File is not a valid PresentationManager XMl file.'))
self.process_xml(file_path)
def _get_attr(self, elem, name):
"""
@ -89,6 +61,47 @@ class PresentationManagerImport(SongImport):
else:
return ''
def process_xml(self, file_path, encoding=None):
if encoding is not None:
# Open file with detected encoding and remove encoding declaration
text = file_path.read_text(encoding=encoding)
text = re.sub(r'.+\?>\n', '', text)
try:
tree = etree.fromstring(text, parser=etree.XMLParser(recover=True))
except ValueError:
log.exception('XML syntax error in file {name}'.format(name=file_path))
self.log_error(file_path,
translate('SongsPlugin.PresentationManagerImport',
'File is not in XML-format, which is the only format supported.'))
return
else:
try:
tree = etree.parse(str(file_path), parser=etree.XMLParser(recover=True))
except etree.XMLSyntaxError:
# Try to detect encoding and use it
self.process_xml(file_path, get_file_encoding(file_path))
file_str = etree.tostring(tree)
if not file_str:
log.exception('Could not find XML in file {name}'.format(name=file_path))
self.log_error(file_path, translate('SongsPlugin.PresentationManagerImport',
'File is not in XML-format, which is the only format supported.'))
return
try:
root = objectify.fromstring(file_str)
except etree.XMLSyntaxError:
if encoding is None:
# Try to detect encoding and use it
self.process_xml(file_path, get_file_encoding(file_path))
return
try:
self.process_song(root, file_path)
except AttributeError:
log.exception('XML syntax error in file {name}'.format(name=file_path))
self.log_error(file_path, translate('SongsPlugin.PresentationManagerImport',
'File is not a valid PresentationManager XMl file.'))
def process_song(self, root, file_path):
"""
:param root: