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<?php
namespace JakubOnderka\PhpConsoleHighlighter;
use JakubOnderka\PhpConsoleColor\ConsoleColor;
class Highlighter
{
const TOKEN_DEFAULT = 'token_default',
TOKEN_COMMENT = 'token_comment',
TOKEN_STRING = 'token_string',
TOKEN_HTML = 'token_html',
TOKEN_KEYWORD = 'token_keyword';
const ACTUAL_LINE_MARK = 'actual_line_mark',
LINE_NUMBER = 'line_number';
/** @var ConsoleColor */
private $color;
/** @var array */
private $defaultTheme = array(
self::TOKEN_STRING => 'red',
self::TOKEN_COMMENT => 'yellow',
self::TOKEN_KEYWORD => 'green',
self::TOKEN_DEFAULT => 'default',
self::TOKEN_HTML => 'cyan',
self::ACTUAL_LINE_MARK => 'red',
self::LINE_NUMBER => 'dark_gray',
);
/**
* @param ConsoleColor $color
*/
public function __construct(ConsoleColor $color)
{
$this->color = $color;
foreach ($this->defaultTheme as $name => $styles) {
if (!$this->color->hasTheme($name)) {
$this->color->addTheme($name, $styles);
}
}
}
/**
* @param string $source
* @param int $lineNumber
* @param int $linesBefore
* @param int $linesAfter
* @return string
* @throws \JakubOnderka\PhpConsoleColor\InvalidStyleException
* @throws \InvalidArgumentException
*/
public function getCodeSnippet($source, $lineNumber, $linesBefore = 2, $linesAfter = 2)
{
$tokenLines = $this->getHighlightedLines($source);
$offset = $lineNumber - $linesBefore - 1;
$offset = max($offset, 0);
$length = $linesAfter + $linesBefore + 1;
$tokenLines = array_slice($tokenLines, $offset, $length, $preserveKeys = true);
$lines = $this->colorLines($tokenLines);
return $this->lineNumbers($lines, $lineNumber);
}
/**
* @param string $source
* @return string
* @throws \JakubOnderka\PhpConsoleColor\InvalidStyleException
* @throws \InvalidArgumentException
*/
public function getWholeFile($source)
{
$tokenLines = $this->getHighlightedLines($source);
$lines = $this->colorLines($tokenLines);
return implode(PHP_EOL, $lines);
}
/**
* @param string $source
* @return string
* @throws \JakubOnderka\PhpConsoleColor\InvalidStyleException
* @throws \InvalidArgumentException
*/
public function getWholeFileWithLineNumbers($source)
{
$tokenLines = $this->getHighlightedLines($source);
$lines = $this->colorLines($tokenLines);
return $this->lineNumbers($lines);
}
/**
* @param string $source
* @return array
*/
private function getHighlightedLines($source)
{
$source = str_replace(array("\r\n", "\r"), "\n", $source);
$tokens = $this->tokenize($source);
return $this->splitToLines($tokens);
}
/**
* @param string $source
* @return array
*/
private function tokenize($source)
{
$tokens = token_get_all($source);
$output = array();
$currentType = null;
$buffer = '';
foreach ($tokens as $token) {
if (is_array($token)) {
switch ($token[0]) {
case T_INLINE_HTML:
$newType = self::TOKEN_HTML;
break;
case T_COMMENT:
case T_DOC_COMMENT:
$newType = self::TOKEN_COMMENT;
break;
case T_ENCAPSED_AND_WHITESPACE:
case T_CONSTANT_ENCAPSED_STRING:
$newType = self::TOKEN_STRING;
break;
case T_WHITESPACE:
break;
case T_OPEN_TAG:
case T_OPEN_TAG_WITH_ECHO:
case T_CLOSE_TAG:
case T_STRING:
case T_VARIABLE:
// Constants
case T_DIR:
case T_FILE:
case T_METHOD_C:
case T_DNUMBER:
case T_LNUMBER:
case T_NS_C:
case T_LINE:
case T_CLASS_C:
case T_FUNC_C:
//case T_TRAIT_C:
$newType = self::TOKEN_DEFAULT;
break;
default:
// Compatibility with PHP 5.3
if (defined('T_TRAIT_C') && $token[0] === T_TRAIT_C) {
$newType = self::TOKEN_DEFAULT;
} else {
$newType = self::TOKEN_KEYWORD;
}
}
} else {
$newType = $token === '"' ? self::TOKEN_STRING : self::TOKEN_KEYWORD;
}
if ($currentType === null) {
$currentType = $newType;
}
if ($currentType != $newType) {
$output[] = array($currentType, $buffer);
$buffer = '';
$currentType = $newType;
}
$buffer .= is_array($token) ? $token[1] : $token;
}
if (isset($newType)) {
$output[] = array($newType, $buffer);
}
return $output;
}
/**
* @param array $tokens
* @return array
*/
private function splitToLines(array $tokens)
{
$lines = array();
$line = array();
foreach ($tokens as $token) {
foreach (explode("\n", $token[1]) as $count => $tokenLine) {
if ($count > 0) {
$lines[] = $line;
$line = array();
}
if ($tokenLine === '') {
continue;
}
$line[] = array($token[0], $tokenLine);
}
}
$lines[] = $line;
return $lines;
}
/**
* @param array $tokenLines
* @return array
* @throws \JakubOnderka\PhpConsoleColor\InvalidStyleException
* @throws \InvalidArgumentException
*/
private function colorLines(array $tokenLines)
{
$lines = array();
foreach ($tokenLines as $lineCount => $tokenLine) {
$line = '';
foreach ($tokenLine as $token) {
list($tokenType, $tokenValue) = $token;
if ($this->color->hasTheme($tokenType)) {
$line .= $this->color->apply($tokenType, $tokenValue);
} else {
$line .= $tokenValue;
}
}
$lines[$lineCount] = $line;
}
return $lines;
}
/**
* @param array $lines
* @param null|int $markLine
* @return string
* @throws \JakubOnderka\PhpConsoleColor\InvalidStyleException
*/
private function lineNumbers(array $lines, $markLine = null)
{
end($lines);
$lineStrlen = strlen(key($lines) + 1);
$snippet = '';
foreach ($lines as $i => $line) {
if ($markLine !== null) {
$snippet .= ($markLine === $i + 1 ? $this->color->apply(self::ACTUAL_LINE_MARK, ' > ') : ' ');
}
$snippet .= $this->color->apply(self::LINE_NUMBER, str_pad($i + 1, $lineStrlen, ' ', STR_PAD_LEFT) . '| ');
$snippet .= $line . PHP_EOL;
}
return $snippet;
}
}