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TiclemFR
282
vendor/nunomaduro/termwind/src/Html/CodeRenderer.php
vendored
Normal file
282
vendor/nunomaduro/termwind/src/Html/CodeRenderer.php
vendored
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<?php
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declare(strict_types=1);
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namespace Termwind\Html;
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use Termwind\Components\Element;
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use Termwind\Termwind;
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use Termwind\ValueObjects\Node;
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/**
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* @internal
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*/
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final class CodeRenderer
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{
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public const TOKEN_DEFAULT = 'token_default';
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public const TOKEN_COMMENT = 'token_comment';
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public const TOKEN_STRING = 'token_string';
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public const TOKEN_HTML = 'token_html';
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public const TOKEN_KEYWORD = 'token_keyword';
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public const ACTUAL_LINE_MARK = 'actual_line_mark';
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public const LINE_NUMBER = 'line_number';
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private const ARROW_SYMBOL_UTF8 = '➜';
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private const DELIMITER_UTF8 = '▕ '; // '▶';
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private const LINE_NUMBER_DIVIDER = 'line_divider';
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private const MARKED_LINE_NUMBER = 'marked_line';
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private const WIDTH = 3;
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/**
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* Holds the theme.
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*
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* @var array<string, string>
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*/
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private const THEME = [
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self::TOKEN_STRING => 'text-gray',
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self::TOKEN_COMMENT => 'text-gray italic',
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self::TOKEN_KEYWORD => 'text-magenta strong',
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self::TOKEN_DEFAULT => 'strong',
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self::TOKEN_HTML => 'text-blue strong',
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self::ACTUAL_LINE_MARK => 'text-red strong',
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self::LINE_NUMBER => 'text-gray',
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self::MARKED_LINE_NUMBER => 'italic strong',
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self::LINE_NUMBER_DIVIDER => 'text-gray',
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];
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private string $delimiter = self::DELIMITER_UTF8;
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private string $arrow = self::ARROW_SYMBOL_UTF8;
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private const NO_MARK = ' ';
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/**
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* Highlights HTML content from a given node and converts to the content element.
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*/
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public function toElement(Node $node): Element
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{
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$line = max((int) $node->getAttribute('line'), 0);
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$startLine = max((int) $node->getAttribute('start-line'), 1);
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$html = $node->getHtml();
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$lines = explode("\n", $html);
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$extraSpaces = $this->findExtraSpaces($lines);
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if ($extraSpaces !== '') {
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$lines = array_map(static function (string $line) use ($extraSpaces): string {
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return str_starts_with($line, $extraSpaces) ? substr($line, strlen($extraSpaces)) : $line;
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}, $lines);
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$html = implode("\n", $lines);
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}
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$tokenLines = $this->getHighlightedLines(trim($html, "\n"), $startLine);
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$lines = $this->colorLines($tokenLines);
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$lines = $this->lineNumbers($lines, $line);
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return Termwind::div(trim($lines, "\n"));
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}
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/**
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* Finds extra spaces which should be removed from HTML.
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*
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* @param array<int, string> $lines
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*/
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private function findExtraSpaces(array $lines): string
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{
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foreach ($lines as $line) {
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if ($line === '') {
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continue;
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}
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if (preg_replace('/\s+/', '', $line) === '') {
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return $line;
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}
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}
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return '';
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}
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/**
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* Returns content split into lines with numbers.
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*
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* @return array<int, array<int, array{0: string, 1: non-empty-string}>>
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*/
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private function getHighlightedLines(string $source, int $startLine): array
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{
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$source = str_replace(["\r\n", "\r"], "\n", $source);
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$tokens = $this->tokenize($source);
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return $this->splitToLines($tokens, $startLine - 1);
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}
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/**
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* Splits content into tokens.
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*
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* @return array<int, array{0: string, 1: string}>
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*/
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private function tokenize(string $source): array
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{
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$tokens = token_get_all($source);
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$output = [];
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$currentType = null;
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$newType = self::TOKEN_KEYWORD;
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$buffer = '';
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foreach ($tokens as $token) {
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if (is_array($token)) {
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if ($token[0] !== T_WHITESPACE) {
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$newType = match ($token[0]) {
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T_OPEN_TAG, T_OPEN_TAG_WITH_ECHO, T_CLOSE_TAG, T_STRING, T_VARIABLE,
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T_DIR, T_FILE, T_METHOD_C, T_DNUMBER, T_LNUMBER, T_NS_C,
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T_LINE, T_CLASS_C, T_FUNC_C, T_TRAIT_C => self::TOKEN_DEFAULT,
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T_COMMENT, T_DOC_COMMENT => self::TOKEN_COMMENT,
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T_ENCAPSED_AND_WHITESPACE, T_CONSTANT_ENCAPSED_STRING => self::TOKEN_STRING,
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T_INLINE_HTML => self::TOKEN_HTML,
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default => self::TOKEN_KEYWORD
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};
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}
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} else {
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$newType = $token === '"' ? self::TOKEN_STRING : self::TOKEN_KEYWORD;
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}
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if ($currentType === null) {
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$currentType = $newType;
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}
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if ($currentType !== $newType) {
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$output[] = [$currentType, $buffer];
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$buffer = '';
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$currentType = $newType;
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}
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$buffer .= is_array($token) ? $token[1] : $token;
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}
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$output[] = [$newType, $buffer];
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return $output;
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}
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/**
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* Splits tokens into lines.
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*
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* @param array<int, array{0: string, 1: string}> $tokens
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* @param int $startLine
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* @return array<int, array<int, array{0: string, 1: non-empty-string}>>
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*/
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private function splitToLines(array $tokens, int $startLine): array
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{
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$lines = [];
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$line = [];
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foreach ($tokens as $token) {
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foreach (explode("\n", $token[1]) as $count => $tokenLine) {
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if ($count > 0) {
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$lines[$startLine++] = $line;
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$line = [];
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}
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if ($tokenLine === '') {
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continue;
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}
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$line[] = [$token[0], $tokenLine];
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}
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}
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$lines[$startLine++] = $line;
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return $lines;
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}
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/**
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* Applies colors to tokens according to a color schema.
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*
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* @param array<int, array<int, array{0: string, 1: non-empty-string}>> $tokenLines
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* @return array<int, string>
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*/
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private function colorLines(array $tokenLines): array
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{
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$lines = [];
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foreach ($tokenLines as $lineCount => $tokenLine) {
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$line = '';
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foreach ($tokenLine as $token) {
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[$tokenType, $tokenValue] = $token;
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$line .= $this->styleToken($tokenType, $tokenValue);
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}
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$lines[$lineCount] = $line;
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}
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return $lines;
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}
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/**
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* Prepends line numbers into lines.
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*
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* @param array<int, string> $lines
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* @param int $markLine
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* @return string
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*/
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private function lineNumbers(array $lines, int $markLine): string
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{
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$lastLine = (int) array_key_last($lines);
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$lineLength = strlen((string) ($lastLine + 1));
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$lineLength = $lineLength < self::WIDTH ? self::WIDTH : $lineLength;
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$snippet = '';
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$mark = ' '.$this->arrow.' ';
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foreach ($lines as $i => $line) {
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$coloredLineNumber = $this->coloredLineNumber(self::LINE_NUMBER, $i, $lineLength);
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if (0 !== $markLine) {
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$snippet .= ($markLine === $i + 1
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? $this->styleToken(self::ACTUAL_LINE_MARK, $mark)
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: self::NO_MARK
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);
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$coloredLineNumber = ($markLine === $i + 1 ?
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$this->coloredLineNumber(self::MARKED_LINE_NUMBER, $i, $lineLength) :
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$coloredLineNumber
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);
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}
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$snippet .= $coloredLineNumber;
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$snippet .= $this->styleToken(self::LINE_NUMBER_DIVIDER, $this->delimiter);
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$snippet .= $line.PHP_EOL;
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}
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return $snippet;
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}
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/**
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* Formats line number and applies color according to a color schema.
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*/
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private function coloredLineNumber(string $token, int $lineNumber, int $length): string
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{
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return $this->styleToken(
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$token, str_pad((string) ($lineNumber + 1), $length, ' ', STR_PAD_LEFT)
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);
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}
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/**
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* Formats string and applies color according to a color schema.
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*/
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private function styleToken(string $token, string $string): string
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{
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return (string) Termwind::span($string, self::THEME[$token]);
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}
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}
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