Improve po2php transformation
- Use Geekwright\Po for po file parsing to catch corner case with multi-line message - Switch from risky double quoted strings to safer single quoted strings in the output file
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513aa33e6d
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1 changed files with 128 additions and 177 deletions
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@ -21,6 +21,9 @@
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namespace Friendica\Console;
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use Geekwright\Po\PoFile;
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use Geekwright\Po\PoTokens;
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/**
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* Read a messages.po file and create strings.php in the same directory
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*/
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@ -84,121 +87,8 @@ HELP;
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$this->out('Out to ' . $outfile);
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$out = "<?php\n\n";
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$out = $this->poFile2Php($lang, $pofile);
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$infile = file($pofile);
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$k = '';
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$v = '';
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$arr = false;
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$ink = false;
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$inv = false;
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$escape_s_exp = '|[^\\\\]\$[a-z]|';
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foreach ($infile as $l) {
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$l = str_replace('\"', self::DQ_ESCAPE, $l);
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$len = strlen($l);
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if ($l[0] == "#") {
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$l = "";
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}
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if (substr($l, 0, 15) == '"Plural-Forms: ') {
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$match = [];
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preg_match("|nplurals=([0-9]*); *plural=(.*?)[;\\\\]|", $l, $match);
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$return = $this->convertCPluralConditionToPhpReturnStatement($match[2]);
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// define plural select function if not already defined
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$fnname = 'string_plural_select_' . $lang;
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$out .= 'if(! function_exists("' . $fnname . '")) {' . "\n";
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$out .= 'function ' . $fnname . '($n){' . "\n";
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$out .= ' $n = intval($n);' . "\n";
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$out .= ' ' . $return . "\n";
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$out .= '}}' . "\n";
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}
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if ($k != '' && substr($l, 0, 7) == 'msgstr ') {
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$v = substr($l, 8, $len - 10);
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$v = preg_replace_callback($escape_s_exp, [$this, 'escapeDollar'], $v);
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if ($v != '') {
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$out .= '$a->strings["' . $k . '"] = "' . $v . '"';
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} else {
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$k = '';
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$ink = false;
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}
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}
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if ($k != "" && substr($l, 0, 7) == 'msgstr[') {
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if ($ink) {
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$ink = false;
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$out .= '$a->strings["' . $k . '"] = ';
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}
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if ($inv) {
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$inv = false;
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$out .= '"' . $v . '"';
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}
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if (!$arr) {
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$arr = true;
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$out .= "[\n";
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}
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$match = [];
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preg_match("|\[([0-9]*)\] (.*)|", $l, $match);
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if ($match[2] !== '""') {
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$out .= "\t"
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. preg_replace_callback($escape_s_exp, [$this, 'escapeDollar'], $match[1])
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. ' => '
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. preg_replace_callback($escape_s_exp, [$this, 'escapeDollar'], $match[2])
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. ",\n";
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}
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}
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if (substr($l, 0, 6) == 'msgid_') {
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$ink = false;
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$out .= '$a->strings["' . $k . '"] = ';
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}
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if ($ink) {
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$k .= trim($l, "\"\r\n");
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$k = preg_replace_callback($escape_s_exp, [$this, 'escapeDollar'], $k);
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}
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if (substr($l, 0, 6) == 'msgid ') {
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if ($inv) {
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$inv = false;
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$out .= '"' . $v . '"';
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}
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if ($k != "") {
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$out .= ($arr) ? "];\n" : ";\n";
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}
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$arr = false;
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$k = str_replace("msgid ", "", $l);
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if ($k != '""') {
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$k = trim($k, "\"\r\n");
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} else {
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$k = '';
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}
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$k = preg_replace_callback($escape_s_exp, [$this, 'escapeDollar'], $k);
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$ink = true;
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}
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if ($inv && substr($l, 0, 6) != "msgstr") {
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$v .= trim($l, "\"\r\n");
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$v = preg_replace_callback($escape_s_exp, [$this, 'escapeDollar'], $v);
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}
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}
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if ($inv) {
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$out .= '"' . $v . '"';
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}
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if ($k != '') {
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$out .= ($arr ? "];\n" : ";\n");
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}
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$out = str_replace(self::DQ_ESCAPE, '\"', $out);
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if (!file_put_contents($outfile, $out)) {
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throw new \RuntimeException('Unable to write to ' . $outfile);
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}
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@ -206,9 +96,70 @@ HELP;
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return 0;
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}
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private function escapeDollar($match)
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private function poFile2Php($lang, $infile): string
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{
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return str_replace('$', '\$', $match[0]);
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$poFile = new PoFile();
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$poFile->readPoFile($infile);
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$out = "<?php\n\n";
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$pluralForms = $poFile->getHeaderEntry()->getHeader('plural-forms');
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if (!$pluralForms) {
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throw new \RuntimeException('No Plural-Forms header detected');
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}
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$regex = 'nplurals=([0-9]*); *plural=(.*?)[\\\\;]';
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if (!preg_match('|' . $regex . '|', $pluralForms, $match)) {
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throw new \RuntimeException('Unexpected Plural-Forms header value, expected "' . $regex . '", found ' . $pluralForms);
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}
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$out .= $this->createPluralSelectFunctionString($match[2], $lang);
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foreach ($poFile->getEntries() as $entry) {
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if (!implode('', $entry->getAsStringArray(PoTokens::TRANSLATED))) {
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// Skip completely untranslated entries
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continue;
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}
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$out .= '$a->strings[' . self::escapePhpString($entry->getAsString(PoTokens::MESSAGE)) . '] = ';
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$msgid_plural = $entry->get(PoTokens::PLURAL);
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if (empty($msgid_plural)) {
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$out .= self::escapePhpString($entry->getAsString(PoTokens::TRANSLATED)) . ';' . "\n";
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} else {
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$out .= '[' . "\n";
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foreach($entry->getAsStringArray(PoTokens::TRANSLATED) as $key => $msgstr) {
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$out .= "\t" . $key . ' => ' . self::escapePhpString($msgstr) . ',' . "\n";
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};
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$out .= '];' . "\n";
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}
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}
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return $out;
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}
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private function createPluralSelectFunctionString(string $pluralForms, string $lang): string
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{
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$return = $this->convertCPluralConditionToPhpReturnStatement(
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$pluralForms
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);
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$fnname = 'string_plural_select_' . $lang;
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$out = 'if(! function_exists("' . $fnname . '")) {' . "\n";
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$out .= 'function ' . $fnname . '($n){' . "\n";
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$out .= ' $n = intval($n);' . "\n";
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$out .= ' ' . $return . "\n";
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$out .= '}}' . "\n";
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return $out;
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}
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private static function escapePhpString($string): string
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{
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return "'" . strtr($string, ['\'' => '\\\'']) . "'";
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}
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/**
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@ -224,68 +175,68 @@ HELP;
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{
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$cond = str_replace('n', '$n', $cond);
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/**
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* Parses the condition into an array if there's at least a ternary operator, to a string otherwise
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*
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* Warning: Black recursive magic
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*
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* @param string $string
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* @param array|string $node
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*/
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function parse(string $string, &$node = [])
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{
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// Removes extra outward parentheses
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if (strpos($string, '(') === 0 && strrpos($string, ')') === strlen($string) - 1) {
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$string = substr($string, 1, -1);
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}
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$q = strpos($string, '?');
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$s = strpos($string, ':');
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if ($q === false && $s === false) {
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$node = $string;
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return;
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}
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if ($q === false || $s < $q) {
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list($then, $else) = explode(':', $string, 2);
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$node['then'] = $then;
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$parsedElse = [];
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parse($else, $parsedElse);
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$node['else'] = $parsedElse;
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} else {
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list($if, $thenelse) = explode('?', $string, 2);
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$node['if'] = $if;
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parse($thenelse, $node);
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}
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}
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/**
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* Renders the parsed condition tree into a return statement
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*
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* Warning: Black recursive magic
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*
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* @param $tree
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* @return string
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*/
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function render($tree)
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{
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if (is_array($tree)) {
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$if = trim($tree['if']);
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$then = trim($tree['then']);
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$else = render($tree['else']);
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return "if ({$if}) { return {$then}; } else {$else}";
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}
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$tree = trim($tree);
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return " { return {$tree}; }";
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}
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$tree = [];
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parse($cond, $tree);
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self::parse($cond, $tree);
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return is_string($tree) ? "return intval({$tree});" : render($tree);
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return is_string($tree) ? "return intval({$tree});" : self::render($tree);
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}
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/**
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* Parses the condition into an array if there's at least a ternary operator, to a string otherwise
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*
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* Warning: Black recursive magic
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*
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* @param string $string
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* @param array|string $node
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*/
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private static function parse(string $string, &$node = [])
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{
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// Removes extra outward parentheses
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if (strpos($string, '(') === 0 && strrpos($string, ')') === strlen($string) - 1) {
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$string = substr($string, 1, -1);
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}
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$q = strpos($string, '?');
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$s = strpos($string, ':');
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if ($q === false && $s === false) {
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$node = $string;
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return;
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}
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if ($q === false || $s < $q) {
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list($then, $else) = explode(':', $string, 2);
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$node['then'] = $then;
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$parsedElse = [];
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self::parse($else, $parsedElse);
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$node['else'] = $parsedElse;
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} else {
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list($if, $thenelse) = explode('?', $string, 2);
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$node['if'] = $if;
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self::parse($thenelse, $node);
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}
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}
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/**
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* Renders the parsed condition tree into a return statement
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*
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* Warning: Black recursive magic
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*
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* @param $tree
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* @return string
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*/
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private static function render($tree): string
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{
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if (is_array($tree)) {
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$if = trim($tree['if']);
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$then = trim($tree['then']);
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$else = self::render($tree['else']);
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return "if ({$if}) { return {$then}; } else {$else}";
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}
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$tree = trim($tree);
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return " { return {$tree}; }";
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}
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}
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