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<?php |
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/* |
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* Copyright 2016 Johannes M. Schmitt <[email protected]> |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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namespace JMS\Serializer\Util; |
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use JMS\Serializer\Exception\RuntimeException; |
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/** |
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* A writer implementation. |
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* |
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* This may be used to simplify writing well-formatted code. |
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* |
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* @author Johannes M. Schmitt <[email protected]> |
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*/ |
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class Writer |
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{ |
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public $indentationSpaces = 4; |
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public $indentationLevel = 0; |
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public $content = ''; |
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public $changeCount = 0; |
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private $changes = array(); |
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public function indent() |
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{ |
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$this->indentationLevel += 1; |
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return $this; |
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} |
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public function outdent() |
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{ |
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$this->indentationLevel -= 1; |
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if ($this->indentationLevel < 0) { |
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throw new RuntimeException('The identation level cannot be less than zero.'); |
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} |
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return $this; |
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} |
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/** |
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* @param string $content |
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* |
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* @return Writer |
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*/ |
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public function writeln($content) |
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{ |
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$this->write($content . "\n"); |
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return $this; |
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} |
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public function revert() |
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{ |
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$change = array_pop($this->changes); |
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$this->changeCount -= 1; |
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$this->content = substr($this->content, 0, -1 * strlen($change)); |
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} |
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/** |
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* @param string $content |
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* |
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* @return Writer |
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*/ |
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public function write($content) |
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{ |
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$addition = ''; |
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$lines = explode("\n", $content); |
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for ($i = 0, $c = count($lines); $i < $c; $i++) { |
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if ($this->indentationLevel > 0 |
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&& !empty($lines[$i]) |
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&& ((empty($addition) && "\n" === substr($this->content, -1)) || "\n" === substr($addition, -1)) |
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) { |
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$addition .= str_repeat(' ', $this->indentationLevel * $this->indentationSpaces); |
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} |
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$addition .= $lines[$i]; |
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if ($i + 1 < $c) { |
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$addition .= "\n"; |
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} |
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} |
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$this->content .= $addition; |
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$this->changes[] = $addition; |
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$this->changeCount += 1; |
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return $this; |
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} |
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public function rtrim($preserveNewLines = true) |
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{ |
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if (!$preserveNewLines) { |
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$this->content = rtrim($this->content); |
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return $this; |
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} |
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$addNl = "\n" === substr($this->content, -1); |
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$this->content = rtrim($this->content); |
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if ($addNl) { |
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$this->content .= "\n"; |
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} |
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return $this; |
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} |
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public function reset() |
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{ |
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$this->content = ''; |
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$this->indentationLevel = 0; |
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return $this; |
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} |
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public function getContent() |
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{ |
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return $this->content; |
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} |
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} |
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schmittjoh /
serializer
