diff options
Diffstat (limited to 'azure/aria/aria-extension-cloudify/src/aria/aria/parser/loading/file.py')
-rw-r--r-- | azure/aria/aria-extension-cloudify/src/aria/aria/parser/loading/file.py | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/azure/aria/aria-extension-cloudify/src/aria/aria/parser/loading/file.py b/azure/aria/aria-extension-cloudify/src/aria/aria/parser/loading/file.py new file mode 100644 index 0000000..a02bd69 --- /dev/null +++ b/azure/aria/aria-extension-cloudify/src/aria/aria/parser/loading/file.py @@ -0,0 +1,64 @@ +# Licensed to the Apache Software Foundation (ASF) under one or more +# contributor license agreements. See the NOTICE file distributed with +# this work for additional information regarding copyright ownership. +# The ASF licenses this file to You under the Apache License, Version 2.0 +# (the "License"); you may not use this file except in compliance with +# the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +import codecs + +from .loader import Loader +from .exceptions import LoaderException, DocumentNotFoundException + + +class FileTextLoader(Loader): + """ + ARIA file text loader. + + Extracts a text document from a file. The default encoding is UTF-8, but other supported + encoding can be specified instead. + """ + + def __init__(self, context, path, encoding='utf-8'): + self.context = context + self.path = path + self.encoding = encoding + self._file = None + + def open(self): + try: + self._file = codecs.open(self.path, mode='r', encoding=self.encoding, buffering=1) + except IOError as e: + if e.errno == 2: + raise DocumentNotFoundException('file not found: "%s"' % self.path, cause=e) + else: + raise LoaderException('file I/O error: "%s"' % self.path, cause=e) + except Exception as e: + raise LoaderException('file error: "%s"' % self.path, cause=e) + + def close(self): + if self._file is not None: + try: + self._file.close() + except IOError as e: + raise LoaderException('file I/O error: "%s"' % self.path, cause=e) + except Exception as e: + raise LoaderException('file error: "%s"' % self.path, cause=e) + + def load(self): + if self._file is not None: + try: + return self._file.read() + except IOError as e: + raise LoaderException('file I/O error: "%s"' % self.path, cause=e) + except Exception as e: + raise LoaderException('file error %s' % self.path, cause=e) + return None |