| <?php |
| /** |
| * File containing the ezcDocumentPdfTokenizer class |
| * |
| * 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. |
| * |
| * @package Document |
| * @version //autogen// |
| * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0 |
| */ |
| |
| /** |
| * Abstract base class for tokenizer implementations. |
| * |
| * Tokenizers are used to split a series of words (sentences) into single |
| * words, which can be rendered split by spaces. |
| * |
| * @package Document |
| * @version //autogen// |
| */ |
| abstract class ezcDocumentPdfTokenizer |
| { |
| /** |
| * Constant indicating a breaking point, including a rendered space. |
| */ |
| const SPACE = 0; |
| |
| /** |
| * Constant indicating a possible breaking point without rendering a space |
| * character. |
| */ |
| const WRAP = 1; |
| |
| /** |
| * Constant indicating a forced breaking point without rendering a space |
| * character. |
| */ |
| const FORCED = 2; |
| |
| /** |
| * Split string into words |
| * |
| * This function takes a string and splits it into words. There are |
| * different mechanisms which indicate possible splitting points in the |
| * resulting word stream: |
| * |
| * - self:SPACE: The renderer might render a space |
| * - self:WRAP: The renderer might wrap the line at this position, but will |
| * not render spaces, might as well just be omitted. |
| * |
| * A possible splitting of an english sentence might look like: |
| * |
| * <code> |
| * array( |
| * 'Hello', |
| * self:SPACE, |
| * 'world!', |
| * ); |
| * </code> |
| * |
| * Non breaking spaces should not be splitted into multiple words, so there |
| * will be no break applied. |
| * |
| * @param string $string |
| * @return array |
| */ |
| abstract public function tokenize( $string ); |
| } |
| |
| ?> |