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<?php /** * This file is part of PHPWord - A pure PHP library for reading and writing * word processing documents. * * PHPWord is free software distributed under the terms of the GNU Lesser * General Public License version 3 as published by the Free Software Foundation. * * For the full copyright and license information, please read the LICENSE * file that was distributed with this source code. For the full list of * contributors, visit https://github.com/PHPOffice/PHPWord/contributors. * * @see https://github.com/PHPOffice/PHPWord * * @license http://www.gnu.org/licenses/lgpl.txt LGPL version 3 / namespace PhpOffice\PhpWord\Reader\RTF; use PhpOffice\PhpWord\PhpWord; use PhpOffice\PhpWord\SimpleType\Jc; /* * RTF document reader. * * References: * - How to Write an RTF Reader http://latex2rtf.sourceforge.net/rtfspec_45.html * - PHP rtfclass by Markus Fischer https://github.com/mfn/rtfclass * - JavaScript RTF-parser by LazyGyu https://github.com/lazygyu/RTF-parser * * @since 0.11.0 * * @SuppressWarnings(PHPMD.UnusedPrivateMethod) / class Document { /* @const int / const PARA = 'readParagraph'; const STYL = 'readStyle'; const SKIP = 'readSkip'; /* * PhpWord object. * * @var \PhpOffice\PhpWord\PhpWord / private $phpWord; /* * Section object. * * @var \PhpOffice\PhpWord\Element\Section / private $section; /* * Textrun object. * * @var \PhpOffice\PhpWord\Element\TextRun / private $textrun; /* * RTF content. * * @var string / public $rtf; /* * Content length. * * @var int / private $length = 0; /* * Character index. * * @var int / private $offset = 0; /* * Current control word. * * @var string / private $control = ''; /* * Text content. * * @var string / private $text = ''; /* * Parsing a control word flag. * * @var bool / private $isControl = false; /* * First character flag: watch out for control symbols. * * @var bool / private $isFirst = false; /* * Group groups. * * @var array / private $groups = []; /* * Parser flags; not used. * * @var array / private $flags = []; /* * Parse RTF content. * * - Marks controlling characters `{`, `}`, and `\` * - Removes line endings * - Builds control words and control symbols * - Pushes every other character into the text queue * * @todo Use `fread` stream for scalability / public function read(PhpWord $phpWord): void { $markers = [ 123 => 'markOpening', // { 125 => 'markClosing', // } 92 => 'markBackslash', // \ 10 => 'markNewline', // LF 13 => 'markNewline', // CR ]; $this->phpWord = $phpWord; $this->section = $phpWord->addSection(); $this->textrun = $this->section->addTextRun(); $this->length = strlen($this->rtf); $this->flags['paragraph'] = true; // Set paragraph flag from the beginning // Walk each characters while ($this->offset < $this->length) { $char = $this->rtf[$this->offset]; $ascii = ord($char); if (isset($markers[$ascii])) { // Marker found: {, }, \, LF, or CR $markerFunction = $markers[$ascii]; $this->$markerFunction(); } else { if (false === $this->isControl) { // Non control word: Push character $this->pushText($char); } else { if (preg_match('/^[a-zA-Z0-9-]?$/', $char)) { // No delimiter: Buffer control $this->control .= $char; $this->isFirst = false; } else { // Delimiter found: Parse buffered control if ($this->isFirst) { $this->isFirst = false; } else { if (' ' == $char) { // Discard space as a control word delimiter $this->flushControl(true); } } } } } ++$this->offset; } $this->flushText(); } /* * Mark opening braket `{` character. / private function markOpening(): void { $this->flush(true); array_push($this->groups, $this->flags); } /* * Mark closing braket `}` character. / private function markClosing(): void { $this->flush(true); $this->flags = array_pop($this->groups); } /* * Mark backslash `\` character. / private function markBackslash(): void { if ($this->isFirst) { $this->setControl(false); $this->text .= '\\'; } else { $this->flush(); $this->setControl(true); $this->control = ''; } } /* * Mark newline character: Flush control word because it's not possible to span multiline. / private function markNewline(): void { if ($this->isControl) { $this->flushControl(true); } } /* * Flush control word or text. * * @param bool $isControl / private function flush($isControl = false): void { if ($this->isControl) { $this->flushControl($isControl); } else { $this->flushText(); } } /* * Flush control word. * * @param bool $isControl / private function flushControl($isControl = false): void { if (1 === preg_match('/^([A-Za-z]+)(-?[0-9]) ?$/', $this->control, $match)) { [, $control, $parameter] = $match; $this->parseControl($control, $parameter); } if (true === $isControl) { $this->setControl(false); } } /** * Flush text in queue. / private function flushText(): void { if ($this->text != '') { if (isset($this->flags['property'])) { // Set property $this->flags['value'] = $this->text; } else { // Set text if (true === $this->flags['paragraph']) { $this->flags['paragraph'] = false; $this->flags['text'] = $this->text; } } // Add text if it's not flagged as skipped if (!isset($this->flags['skipped'])) { $this->readText(); } $this->text = ''; } } /* * Reset control word and first char state. * * @param bool $value / private function setControl($value): void { $this->isControl = $value; $this->isFirst = $value; } /* * Push text into queue. * * @param string $char / private function pushText($char): void { if ('<' == $char) { $this->text .= '<'; } elseif ('>' == $char) { $this->text .= '>'; } else { $this->text .= $char; } } /* * Parse control. * * @param string $control * @param string $parameter / private function parseControl($control, $parameter): void { $controls = [ 'par' => [self::PARA, 'paragraph', true], 'b' => [self::STYL, 'font', 'bold', true], 'i' => [self::STYL, 'font', 'italic', true], 'u' => [self::STYL, 'font', 'underline', true], 'strike' => [self::STYL, 'font', 'strikethrough', true], 'fs' => [self::STYL, 'font', 'size', $parameter], 'qc' => [self::STYL, 'paragraph', 'alignment', Jc::CENTER], 'sa' => [self::STYL, 'paragraph', 'spaceAfter', $parameter], 'fonttbl' => [self::SKIP, 'fonttbl', null], 'colortbl' => [self::SKIP, 'colortbl', null], 'info' => [self::SKIP, 'info', null], 'generator' => [self::SKIP, 'generator', null], 'title' => [self::SKIP, 'title', null], 'subject' => [self::SKIP, 'subject', null], 'category' => [self::SKIP, 'category', null], 'keywords' => [self::SKIP, 'keywords', null], 'comment' => [self::SKIP, 'comment', null], 'shppict' => [self::SKIP, 'pic', null], 'fldinst' => [self::SKIP, 'link', null], ]; if (isset($controls[$control])) { [$function] = $controls[$control]; if (method_exists($this, $function)) { $directives = $controls[$control]; array_shift($directives); // remove the function variable; we won't need it $this->$function($directives); } } } /* * Read paragraph. * * @param array $directives / private function readParagraph($directives): void { [$property, $value] = $directives; $this->textrun = $this->section->addTextRun(); $this->flags[$property] = $value; } /* * Read style. * * @param array $directives / private function readStyle($directives): void { [$style, $property, $value] = $directives; $this->flags['styles'][$style][$property] = $value; } /* * Read skip. * * @param array $directives / private function readSkip($directives): void { [$property] = $directives; $this->flags['property'] = $property; $this->flags['skipped'] = true; } /* * Read text. */ private function readText(): void { $text = $this->textrun->addText($this->text); if (isset($this->flags['styles']['font'])) { $text->getFontStyle()->setStyleByArray($this->flags['styles']['font']); } } }

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