template_utils.php

<?
require_once "language_config.php";

$MESSAGE_TAG_BEGIN = "{{";
$MESSAGE_TAG_END = "}}";
$PLACEHOLDER_BEGIN = "%";
$PLACEHOLDER_END = "%";

function readTemplate($templateFile) {
    if (file_exists($templateFile)) {
        $content = file_get_contents($templateFile);
        return $content;
    }
    else {
        throw new Exception("Template file doesn't exist");
        return false;
    }
}

function substMessages($content, $dictionary, $language) {
    global $MESSAGE_TAG_BEGIN, $MESSAGE_TAG_END, $PLACEHOLDER_BEGIN, $PLACEHOLDER_END;
    global $DEFAULT_LANGUAGE;

    $result = "";

    $initPos = 0;
    while (($messageTagBeginPos = strpos($content, $MESSAGE_TAG_BEGIN, $initPos)) !== false) {
        $messageNamePos = $messageTagBeginPos + strlen($MESSAGE_TAG_BEGIN);
        $messageTagEndPos = strpos($content, $MESSAGE_TAG_END, $messageNamePos);
        $messageName = substr($content, $messageNamePos, ($messageTagEndPos - $messageNamePos));
        $result .= substr($content, $initPos, ($messageTagBeginPos - $initPos));

        if (!empty($dictionary[$messageName])) {
            $record = $dictionary[$messageName];
            $translation = "";
            if (!empty($record[$language])) {
                $translation = $record[$language];
            }
            elseif (!empty($record[$DEFAULT_LANGUAGE])) {
                $translation = $record[$DEFAULT_LANGUAGE];
            }
            $result .= $translation;
        }

        $initPos = $messageTagEndPos + strlen($MESSAGE_TAG_END);
    }

    $result .= substr($content, $initPos, (strlen($content) - $initPos));

    return $result;
}

?>