223 lines
6.7 KiB
PHP
223 lines
6.7 KiB
PHP
<?php
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$pomo = dirname( dirname( dirname( __FILE__ ) ) ) . '/src/wp-includes/pomo';
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require_once "$pomo/entry.php";
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require_once "$pomo/translations.php";
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/**
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* Responsible for extracting translatable strings from PHP source files
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* in the form of Translations instances
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*/
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class StringExtractor {
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var $rules = array(
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'__' => array( 'string' ),
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'_e' => array( 'string' ),
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'_n' => array( 'singular', 'plural' ),
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);
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var $comment_prefix = 'translators:';
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function __construct( $rules = array() ) {
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$this->rules = $rules;
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}
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function extract_from_directory( $dir, $excludes = array(), $includes = array(), $prefix = '' ) {
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$old_cwd = getcwd();
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chdir( $dir );
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$translations = new Translations;
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$file_names = (array) scandir( '.' );
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foreach ( $file_names as $file_name ) {
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if ( '.' == $file_name || '..' == $file_name ) continue;
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if ( preg_match( '/\.php$/', $file_name ) && $this->does_file_name_match( $prefix . $file_name, $excludes, $includes ) ) {
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$extracted = $this->extract_from_file( $file_name, $prefix );
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$translations->merge_originals_with( $extracted );
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}
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if ( is_dir( $file_name ) ) {
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$extracted = $this->extract_from_directory( $file_name, $excludes, $includes, $prefix . $file_name . '/' );
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$translations->merge_originals_with( $extracted );
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}
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}
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chdir( $old_cwd );
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return $translations;
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}
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function extract_from_file( $file_name, $prefix ) {
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$code = file_get_contents( $file_name );
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return $this->extract_from_code( $code, $prefix . $file_name );
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}
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function does_file_name_match( $path, $excludes, $includes ) {
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if ( $includes ) {
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$matched_any_include = false;
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foreach( $includes as $include ) {
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if ( preg_match( '|^'.$include.'$|', $path ) ) {
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$matched_any_include = true;
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break;
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}
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}
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if ( !$matched_any_include ) return false;
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}
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if ( $excludes ) {
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foreach( $excludes as $exclude ) {
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if ( preg_match( '|^'.$exclude.'$|', $path ) ) {
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return false;
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}
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}
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}
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return true;
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}
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function entry_from_call( $call, $file_name ) {
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$rule = isset( $this->rules[$call['name']] )? $this->rules[$call['name']] : null;
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if ( !$rule ) return null;
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$entry = new Translation_Entry;
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$multiple = array();
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$complete = false;
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for( $i = 0; $i < count( $rule ); ++$i ) {
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if ( $rule[$i] && ( !isset( $call['args'][$i] ) || !is_string( $call['args'][$i] ) || '' == $call['args'][$i] ) ) return false;
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switch( $rule[$i] ) {
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case 'string':
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if ( $complete ) {
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$multiple[] = $entry;
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$entry = new Translation_Entry;
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$complete = false;
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}
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$entry->singular = $call['args'][$i];
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$complete = true;
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break;
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case 'singular':
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if ( $complete ) {
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$multiple[] = $entry;
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$entry = new Translation_Entry;
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$complete = false;
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}
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$entry->singular = $call['args'][$i];
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$entry->is_plural = true;
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break;
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case 'plural':
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$entry->plural = $call['args'][$i];
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$entry->is_plural = true;
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$complete = true;
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break;
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case 'context':
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$entry->context = $call['args'][$i];
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foreach( $multiple as &$single_entry ) {
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$single_entry->context = $entry->context;
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}
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break;
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}
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}
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if ( isset( $call['line'] ) && $call['line'] ) {
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$references = array( $file_name . ':' . $call['line'] );
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$entry->references = $references;
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foreach( $multiple as &$single_entry ) {
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$single_entry->references = $references;
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}
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}
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if ( isset( $call['comment'] ) && $call['comment'] ) {
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$comments = rtrim( $call['comment'] ) . "\n";
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$entry->extracted_comments = $comments;
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foreach( $multiple as &$single_entry ) {
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$single_entry->extracted_comments = $comments;
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}
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}
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if ( $multiple && $entry ) {
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$multiple[] = $entry;
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return $multiple;
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}
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return $entry;
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}
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function extract_from_code( $code, $file_name ) {
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$translations = new Translations;
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$function_calls = $this->find_function_calls( array_keys( $this->rules ), $code );
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foreach( $function_calls as $call ) {
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$entry = $this->entry_from_call( $call, $file_name );
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if ( is_array( $entry ) )
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foreach( $entry as $single_entry )
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$translations->add_entry_or_merge( $single_entry );
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elseif ( $entry)
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$translations->add_entry_or_merge( $entry );
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}
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return $translations;
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}
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/**
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* Finds all function calls in $code and returns an array with an associative array for each function:
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* - name - name of the function
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* - args - array for the function arguments. Each string literal is represented by itself, other arguments are represented by null.
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* - line - line number
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*/
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function find_function_calls( $function_names, $code ) {
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$tokens = token_get_all( $code );
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$function_calls = array();
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$latest_comment = false;
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$in_func = false;
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foreach( $tokens as $token ) {
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$id = $text = null;
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if ( is_array( $token ) ) list( $id, $text, $line ) = $token;
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if ( T_WHITESPACE == $id ) continue;
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if ( T_STRING == $id && in_array( $text, $function_names ) && !$in_func ) {
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$in_func = true;
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$paren_level = -1;
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$args = array();
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$func_name = $text;
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$func_line = $line;
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$func_comment = $latest_comment? $latest_comment : '';
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$just_got_into_func = true;
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$latest_comment = false;
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continue;
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}
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if ( T_COMMENT == $id ) {
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$text = preg_replace( '%^\s+\*\s%m', '', $text );
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$text = str_replace( array( "\r\n", "\n" ), ' ', $text );;
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$text = trim( preg_replace( '%^/\*|//%', '', preg_replace( '%\*/$%', '', $text ) ) );
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if ( 0 === stripos( $text, $this->comment_prefix ) ) {
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$latest_comment = $text;
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}
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}
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if ( !$in_func ) continue;
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if ( '(' == $token ) {
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$paren_level++;
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if ( 0 == $paren_level ) { // start of first argument
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$just_got_into_func = false;
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$current_argument = null;
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$current_argument_is_just_literal = true;
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}
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continue;
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}
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if ( $just_got_into_func ) {
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// there wasn't a opening paren just after the function name -- this means it is not a function
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$in_func = false;
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$just_got_into_func = false;
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}
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if ( ')' == $token ) {
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if ( 0 == $paren_level ) {
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$in_func = false;
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$args[] = $current_argument;
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$call = array( 'name' => $func_name, 'args' => $args, 'line' => $func_line );
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if ( $func_comment ) $call['comment'] = $func_comment;
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$function_calls[] = $call;
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}
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$paren_level--;
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continue;
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}
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if ( ',' == $token && 0 == $paren_level ) {
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$args[] = $current_argument;
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$current_argument = null;
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$current_argument_is_just_literal = true;
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continue;
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}
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if ( T_CONSTANT_ENCAPSED_STRING == $id && $current_argument_is_just_literal ) {
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// we can use eval safely, because we are sure $text is just a string literal
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eval('$current_argument = '.$text.';' );
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continue;
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}
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$current_argument_is_just_literal = false;
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$current_argument = null;
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}
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return $function_calls;
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}
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}
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