| # 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 |