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<?php
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namespace Sabberworm\CSS\Value;
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use Sabberworm\CSS\OutputFormat;
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use Sabberworm\CSS\Parsing\ParserState;
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use Sabberworm\CSS\Parsing\SourceException;
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use Sabberworm\CSS\Parsing\UnexpectedEOFException;
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use Sabberworm\CSS\Parsing\UnexpectedTokenException;
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class CSSString extends PrimitiveValue
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{
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    /**
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     * @var string
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     */
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    private $sString;
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    /**
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     * @param string $sString
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     * @param int $iLineNo
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     */
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    public function __construct($sString, $iLineNo = 0)
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    {
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        $this->sString = $sString;
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        parent::__construct($iLineNo);
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    }
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    /**
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     * @return CSSString
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     *
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     * @throws SourceException
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     * @throws UnexpectedEOFException
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     * @throws UnexpectedTokenException
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     */
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    public static function parse(ParserState $oParserState)
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    {
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        $sBegin = $oParserState->peek();
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        $sQuote = null;
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        if ($sBegin === "'") {
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            $sQuote = "'";
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        } elseif ($sBegin === '"') {
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            $sQuote = '"';
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        }
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        if ($sQuote !== null) {
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            $oParserState->consume($sQuote);
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        }
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        $sResult = "";
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        $sContent = null;
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        if ($sQuote === null) {
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            // Unquoted strings end in whitespace or with braces, brackets, parentheses
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            while (!preg_match('/[\\s{}()<>\\[\\]]/isu', $oParserState->peek())) {
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                $sResult .= $oParserState->parseCharacter(false);
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            }
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        } else {
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            while (!$oParserState->comes($sQuote)) {
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                $sContent = $oParserState->parseCharacter(false);
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                if ($sContent === null) {
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                    throw new SourceException(
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                        "Non-well-formed quoted string {$oParserState->peek(3)}",
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                        $oParserState->currentLine()
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                    );
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                }
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                $sResult .= $sContent;
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            }
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            $oParserState->consume($sQuote);
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        }
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        return new CSSString($sResult, $oParserState->currentLine());
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    }
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    /**
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     * @param string $sString
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     *
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     * @return void
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     */
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    public function setString($sString)
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    {
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        $this->sString = $sString;
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    }
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    /**
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     * @return string
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     */
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    public function getString()
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    {
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        return $this->sString;
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    }
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    /**
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     * @return string
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     */
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    public function __toString()
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    {
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        return $this->render(new OutputFormat());
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    }
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    /**
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     * @return string
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     */
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    public function render(OutputFormat $oOutputFormat)
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    {
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        $sString = addslashes($this->sString);
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        $sString = str_replace("\n", '\A', $sString);
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        return $oOutputFormat->getStringQuotingType() . $sString . $oOutputFormat->getStringQuotingType();
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    }
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}