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<?php namespace Sepia; /** * Copyright (c) 2012 Raúl Ferràs raul.ferras@gmail.com * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of copyright holders nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * https://github.com/raulferras/PHP-po-parser * * Class to parse .po file and extract its strings. * * @version 4.2.2 / class PoParser { protected $entries = array(); protected $headers = array(); protected $sourceHandle = null; protected $options = array(); protected $lineEndings = array('unix' => "\n", 'win' => "\r\n"); /* * Reads and parses a string * * @param string $string po content * @param array $options * * @throws \Exception. * @return PoParser / public static function parseString($string, $options = array()) { $parser = new PoParser(new StringHandler($string), $options); $parser->parse(); return $parser; } /* * Reads and parses a file * * @param string $filepath * @param array $options * * @throws \Exception. * @return PoParser / public static function parseFile($filepath, $options = array()) { $parser = new PoParser(new FileHandler($filepath), $options); $parser->parse(); return $parser; } public function __construct(InterfaceHandler $handler = null, $options = array()) { $this->sourceHandle = $handler; $defaultOptions = array( 'multiline-glue' => '<##EOL##>', // Token used to separate lines in msgid 'context-glue' => '<##EOC##>', // Token used to separate ctxt from msgid 'line-ending' => 'unix', ); $this->options = array_merge($defaultOptions, $options); } /* * @return array / public function getOptions() { return $this->options; } /* * @return array / public function getEntries() { return $this->entries; } /* * Reads and parses strings of a .po file. * * @param InterfaceHandler . Optional * * @throws \Exception, \InvalidArgumentException * @return array. List of entries found in .po file. / public function parse(InterfaceHandler $handle = null) { if ($handle === null) { if ($this->sourceHandle === null) { throw new \InvalidArgumentException('Must provide a valid InterfaceHandler'); } $handle = $this->sourceHandle; } $headers = array(); $hash = array(); $entry = array(); $justNewEntry = false; // A new entry has been just inserted. $firstLine = true; $lastPreviousKey = null; // Used to remember last key in a multiline previous entry. $state = null; $lineNumber = 0; while (!$handle->ended()) { $line = trim($handle->getNextLine()); $split = preg_split('/\s+/ ', $line, 2); $key = $split[0]; // If a blank line is found, or a new msgid when already got one if ($line === '' \|\| ($key === 'msgid' && isset($entry['msgid']))) { // Two consecutive blank lines if ($justNewEntry) { $lineNumber++; continue; } if ($firstLine) { $firstLine = false; if (self::isHeader($entry)) { array_shift($entry['msgstr']); $headers = $entry['msgstr']; } else { $hash[] = $entry; } } else { // A new entry is found! $hash[] = $entry; } $entry = array(); $state = null; $justNewEntry = true; $lastPreviousKey = null; if ($line === '') { $lineNumber++; continue; } } $justNewEntry = false; $data = isset($split[1]) ? $split[1] : null; switch ($key) { // Flagged translation case '#,': $entry['flags'] = preg_split('/,\s/', $data); break; // # Translator comments case '#': $entry['tcomment'] = !isset($entry['tcomment']) ? array() : $entry['tcomment']; $entry['tcomment'][] = $data; break; // #. Comments extracted from source code case '#.': $entry['ccomment'] = !isset($entry['ccomment']) ? array() : $entry['ccomment']; $entry['ccomment'][] = $data; break; // Reference case '#:': $entry['reference'][] = addslashes($data); break; case '#\|': // #\| Previous untranslated string case '#~': // #~ Old entry case '#~\|': // #~\| Previous-Old untranslated string. Reported by @Cellard switch ($key) { case '#\|': $key = 'previous'; break; case '#~': $key = 'obsolete'; break; case '#~\|': $key = 'previous-obsolete'; break; } $tmpParts = explode(' ', $data); $tmpKey = $tmpParts[0]; if (!in_array($tmpKey, array('msgid', 'msgid_plural', 'msgstr', 'msgctxt'))) { $tmpKey = $lastPreviousKey; // If there is a multiline previous string we must remember what key was first line. $str = $data; } else { $str = implode(' ', array_slice($tmpParts, 1)); } $entry[$key] = isset($entry[$key]) ? $entry[$key] : array('msgid' => array(), 'msgstr' => array()); if (strpos($key, 'obsolete') !== false) { $entry['obsolete'] = true; switch ($tmpKey) { case 'msgid': $entry['msgid'][] = $str; $lastPreviousKey = $tmpKey; break; case 'msgstr': if ($str === "\"\"") { $entry['msgstr'][] = trim($str, '"'); } else { $entry['msgstr'][] = $str; } $lastPreviousKey = $tmpKey; break; default: break; } } if ($key !== 'obsolete') { switch ($tmpKey) { case 'msgid': case 'msgid_plural': case 'msgstr': $entry[$key][$tmpKey][] = $str; $lastPreviousKey = $tmpKey; break; default: $entry[$key][$tmpKey] = $str; break; } } break; // context // Allows disambiguations of different messages that have same msgid. // Example: // // #: tools/observinglist.cpp:700 // msgctxt "First letter in 'Scope'" // msgid "S" // msgstr "" // // #: skycomponents/horizoncomponent.cpp:429 // msgctxt "South" // msgid "S" // msgstr "" case 'msgctxt': // untranslated-string case 'msgid': // untranslated-string-plural case 'msgid_plural': $state = $key; $entry[$state][] = $data; break; // translated-string case 'msgstr': $state = 'msgstr'; $entry[$state][] = $data; break; default: if (strpos($key, 'msgstr[') !== false) { // translated-string-case-n $state = $key; $entry[$state][] = $data; } else { // "multiline" lines switch ($state) { case 'msgctxt': case 'msgid': case 'msgid_plural': case (strpos($state, 'msgstr[') !== false): if (is_string($entry[$state])) { // Convert it to array $entry[$state] = array($entry[$state]); } $entry[$state][] = $line; break; case 'msgstr': // Special fix where msgid is "" if ($entry['msgid'] === "\"\"") { $entry['msgstr'][] = trim($line, '"'); } else { $entry['msgstr'][] = $line; } break; default: throw new \Exception( 'PoParser: Parse error! Unknown key "'.$key.'" on line '.($lineNumber + 1) ); } } break; } $lineNumber++; } $handle->close(); // add final entry if ($state === 'msgstr') { $hash[] = $entry; } // - Cleanup header data $this->headers = array(); foreach ($headers as $header) { $header = $this->clean($header); $this->headers[] = "\"".preg_replace("/\\n/", '\n', $header)."\""; } // - Cleanup data, // - merge multiline entries // - Reindex hash for ksort $temp = $hash; $this->entries = array(); foreach ($temp as $entry) { foreach ($entry as &$v) { $or = $v; $v = $this->clean($v); if ($v === false) { // parse error throw new \Exception( 'PoParser: Parse error! poparser::clean returned false on "'.htmlspecialchars($or).'"' ); } } // check if msgid and a key starting with msgstr exists if (isset($entry['msgid']) && count(preg_grep('/^msgstr/', array_keys($entry)))) { $id = $this->getEntryId($entry); $this->entries[$id] = $entry; } } return $this->entries; } /** * Get headers from .po file * * @return array / public function getHeaders() { return $this->headers; } /* * Set new headers * * {code} * array( * '"Project-Id-Version: \n"', * '"Report-Msgid-Bugs-To: \n"', * '"POT-Creation-Date: \n"', * '"PO-Revision-Date: \n"', * '"Last-Translator: none\n"', * '"Language-Team: \n"', * '"MIME-Version: 1.0\n"', * '"Content-Type: text/plain; charset=UTF-8\n"', * ); * {code} * * @param array $newHeaders * * @return bool / public function setHeaders($newHeaders) { if (!is_array($newHeaders)) { return false; } else { $this->headers = $newHeaders; return true; } } /* * Updates an entry. * If entry not found returns false. If $createNew is true, a new entry will be created. * $entry is an array that can contain following indexes: * - msgid: String Array. Required. * - msgstr: String Array. Required. * - reference: String Array. * - msgctxt: String. Disambiguating context. * - tcomment: String Array. Translator comments. * - ccomment: String Array. Source comments. * - msgid_plural: String Array. * - flags: Array. List of entry flags. Example: array('fuzzy','php-format') * - previous: Array: Contains previous untranslated strings in a sub array with msgid and msgstr. * * @param String $msgid Id of entry. Be aware that some entries have a multiline msgid. In that case \n must * be replaced by the value of 'multiline-glue' option (by default "<##EOL##>"). * @param Array $entry Array with all entry data. Fields not setted will be removed. * @param boolean $createNew If msgid not found, it will create a new entry. By default true. You want to set this * to false if need to change the msgid of an entry. / public function setEntry($msgid, $entry, $createNew = true) { // In case of new entry if (!isset($this->entries[$msgid])) { if ($createNew == false) { return; } $this->entries[$msgid] = $entry; } else { // Be able to change msgid. if ($msgid !== $entry['msgid']) { unset($this->entries[$msgid]); $new_msgid = is_array($entry['msgid']) ? implode( $this->options['multiline-glue'], $entry['msgid'] ) : $entry['msgid']; $this->entries[$new_msgid] = $entry; } else { $this->entries[$msgid] = $entry; } } } public function setEntryPlural($msgid, $plural = false) { if ($plural) { $this->entries[$msgid]['msgid_plural'] = $plural; } else { unset($this->entries[$msgid]['msgid_plural']); } } public function setEntryContext($msgid, $context = false) { if ($context) { $this->entries[$msgid]['msgctxt'][0] = $context; } else { unset($this->entries[$msgid]['msgctxt']); } } /* * Gets entries. / public function entries() { return $this->entries; } /* * Writes entries to a po file * * @example * $pofile = new PoParser(); * $pofile->parse('ca.po'); * * // Modify an antry * $pofile->setEntry( $msgid, $msgstr ); * // Save Changes back into `ca.po` * $pofile->writeFile('ca.po'); * * @param string $filepath * * @throws \Exception * @return boolean / public function writeFile($filepath) { $output = $this->compile(); $result = file_put_contents($filepath, $output); if ($result === false) { throw new \Exception('Could not write into file '.htmlspecialchars($filepath)); } return true; } /* * Compiles entries into a string * * @throws \Exception * @return string / public function compile() { $output = ''; if (count($this->headers) > 0) { $output .= "msgid \"\"".$this->eol(); $output .= "msgstr \"\"".$this->eol(); foreach ($this->headers as $header) { $output .= $header.$this->eol(); } $output .= $this->eol(); } $entriesCount = count($this->entries); $counter = 0; foreach ($this->entries as $entry) { $isObsolete = isset($entry['obsolete']) && $entry['obsolete']; $isPlural = isset($entry['msgid_plural']); if (isset($entry['previous'])) { foreach ($entry['previous'] as $key => $data) { if (is_string($data)) { $output .= "#\| ".$key." ".$this->cleanExport($data).$this->eol(); } elseif (is_array($data) && count($data) > 0) { foreach ($data as $line) { $output .= "#\| ".$key." ".$this->cleanExport($line).$this->eol(); } } } } if (isset($entry['tcomment'])) { foreach ($entry['tcomment'] as $comment) { $output .= "# ".$comment.$this->eol(); } } if (isset($entry['ccomment'])) { foreach ($entry['ccomment'] as $comment) { $output .= '#. '.$comment.$this->eol(); } } if (isset($entry['reference'])) { foreach ($entry['reference'] as $ref) { $output .= '#: '.$ref.$this->eol(); } } if (isset($entry['flags']) && !empty($entry['flags'])) { $output .= "#, ".implode(', ', $entry['flags']).$this->eol(); } if (isset($entry['@'])) { $output .= "#@ ".$entry['@'].$this->eol(); } if (isset($entry['msgctxt'])) { $output .= 'msgctxt '.$this->cleanExport($entry['msgctxt'][0]).$this->eol(); } if ($isObsolete) { $output .= "#~ "; } if (isset($entry['msgid'])) { // Special clean for msgid if (is_string($entry['msgid'])) { $msgid = explode($this->eol(), $entry['msgid']); } elseif (is_array($entry['msgid'])) { $msgid = $entry['msgid']; } else { throw new \Exception('msgid not string or array'); } $output .= 'msgid '; foreach ($msgid as $i => $id) { if ($i > 0 && $isObsolete) { $output .= "#~ "; } $output .= $this->cleanExport($id).$this->eol(); } } if (isset($entry['msgid_plural'])) { // Special clean for msgid_plural if (is_string($entry['msgid_plural'])) { $msgidPlural = explode($this->eol(), $entry['msgid_plural']); } elseif (is_array($entry['msgid_plural'])) { $msgidPlural = $entry['msgid_plural']; } else { throw new \Exception('msgid_plural not string or array'); } $output .= 'msgid_plural '; foreach ($msgidPlural as $plural) { $output .= $this->cleanExport($plural).$this->eol(); } } if (count(preg_grep('/^msgstr/', array_keys($entry)))) { // checks if there is a key starting with msgstr if ($isPlural) { $noTranslation = true; foreach ($entry as $key => $value) { if (strpos($key, 'msgstr[') === false) { continue; } $output .= $key." "; $noTranslation = false; foreach ($value as $i => $t) { $output .= $this->cleanExport($t).$this->eol(); } } if ($noTranslation) { $output .= 'msgstr[0] '.$this->cleanExport('').$this->eol(); $output .= 'msgstr[1] '.$this->cleanExport('').$this->eol(); } } else { foreach ((array)$entry['msgstr'] as $i => $t) { if ($i == 0) { if ($isObsolete) { $output .= "#~ "; } $output .= 'msgstr '.$this->cleanExport($t).$this->eol(); } else { if ($isObsolete) { $output .= "#~ "; } $output .= $this->cleanExport($t).$this->eol(); } } } } $counter++; // Avoid inserting an extra newline at end of file if ($counter < $entriesCount) { $output .= $this->eol(); } } return $output; } /* * Returns configured line ending (option 'line-ending' ['win', 'unix']) * * @return string / protected function eol() { return $this->lineEndings[$this->options['line-ending']] ?: "\n"; } /* * Prepares a string to be outputed into a file. * * @param string $string The string to be converted. * * @return string / protected function cleanExport($string) { $quote = '"'; $slash = '\\'; $newline = "\n"; $replaces = array( "$slash" => "$slash$slash", "$quote" => "$slash$quote", "\t" => '\t', ); $string = str_replace(array_keys($replaces), array_values($replaces), $string); $po = $quote.implode("${slash}n$quote$newline$quote", explode($newline, $string)).$quote; // remove empty strings return str_replace("$newline$quote$quote", '', $po); } /* * Generates the internal key for a msgid. * * @param array $entry * * @return string / protected function getEntryId(array $entry) { if (isset($entry['msgctxt'])) { $id = implode( $this->options['multiline-glue'], (array)$entry['msgctxt'] ).$this->options['context-glue'].implode($this->options['multiline-glue'], (array)$entry['msgid']); } else { $id = implode($this->options['multiline-glue'], (array)$entry['msgid']); } return $id; } /* * Undos `cleanExport` actions on a string. * * @param string\|array $x * * @return string\|array. / protected function clean($x) { if (is_array($x)) { foreach ($x as $k => $v) { $x[$k] = $this->clean($v); } } else { // Remove double quotes from start and end of string if ($x == '') { return ''; } if ($x[0] == '"') { $x = substr($x, 1, -1); } // Escapes C-style escape sequences (\a,\b,\f,\n,\r,\t,\v) and converts them to their actual meaning $x = stripcslashes($x); } return $x; } /* * Checks if entry is a header by * * @param array $entry * * @return bool */ protected static function isHeader(array $entry) { if (empty($entry) \|\| !isset($entry['msgstr'])) { return false; } $headerKeys = array( 'Project-Id-Version:' => false, // 'Report-Msgid-Bugs-To:' => false, // 'POT-Creation-Date:' => false, 'PO-Revision-Date:' => false, // 'Last-Translator:' => false, // 'Language-Team:' => false, 'MIME-Version:' => false, // 'Content-Type:' => false, // 'Content-Transfer-Encoding:' => false, // 'Plural-Forms:' => false ); $count = count($headerKeys); $keys = array_keys($headerKeys); $headerItems = 0; foreach ($entry['msgstr'] as $str) { $tokens = explode(':', $str); $tokens[0] = trim($tokens[0], "\"").':'; if (in_array($tokens[0], $keys)) { $headerItems++; unset($headerKeys[$tokens[0]]); $keys = array_keys($headerKeys); } } return ($headerItems == $count) ? true : false; } }

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