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   1  <?php
   2  /**
   3   * http://leafo.net/lessphp
   4   *
   5   * LESS CSS compiler, adapted from http://lesscss.org
   6   *
   7   * Copyright 2013, Leaf Corcoran <leafot@gmail.com>
   8   * Copyright 2016, Marcus Schwarz <github@maswaba.de>
   9   * Licensed under MIT or GPLv3, see LICENSE
  10   */
  11  
  12  
  13  namespace LesserPHP;
  14  
  15  class FormatterClassic
  16  {
  17      public $indentChar = '  ';
  18  
  19      public $break = "\n";
  20      public $open = ' {';
  21      public $close = '}';
  22      public $selectorSeparator = ', ';
  23      public $assignSeparator = ':';
  24  
  25      public $openSingle = ' { ';
  26      public $closeSingle = ' }';
  27  
  28      public $disableSingle = false;
  29      public $breakSelectors = false;
  30  
  31      public $compressColors = false;
  32      protected int $indentLevel;
  33  
  34      public function __construct()
  35      {
  36          $this->indentLevel = 0;
  37      }
  38  
  39      public function indentStr($n = 0)
  40      {
  41          return str_repeat($this->indentChar, max($this->indentLevel + $n, 0));
  42      }
  43  
  44      public function property($name, $value)
  45      {
  46          return $name . $this->assignSeparator . $value . ';';
  47      }
  48  
  49      protected function isEmpty($block)
  50      {
  51          if (empty($block->lines)) {
  52              foreach ($block->children as $child) {
  53                  if (!$this->isEmpty($child)) return false;
  54              }
  55  
  56              return true;
  57          }
  58          return false;
  59      }
  60  
  61      public function block($block)
  62      {
  63          if ($this->isEmpty($block)) return;
  64  
  65          $inner = $pre = $this->indentStr();
  66  
  67          $isSingle = !$this->disableSingle &&
  68              is_null($block->type) && count($block->lines) == 1;
  69  
  70          if (!empty($block->selectors)) {
  71              $this->indentLevel++;
  72  
  73              if ($this->breakSelectors) {
  74                  $selectorSeparator = $this->selectorSeparator . $this->break . $pre;
  75              } else {
  76                  $selectorSeparator = $this->selectorSeparator;
  77              }
  78  
  79              echo $pre .
  80                  implode($selectorSeparator, $block->selectors);
  81              if ($isSingle) {
  82                  echo $this->openSingle;
  83                  $inner = '';
  84              } else {
  85                  echo $this->open . $this->break;
  86                  $inner = $this->indentStr();
  87              }
  88          }
  89  
  90          if (!empty($block->lines)) {
  91              $glue = $this->break . $inner;
  92              echo $inner . implode($glue, $block->lines);
  93              if (!$isSingle && !empty($block->children)) {
  94                  echo $this->break;
  95              }
  96          }
  97  
  98          foreach ($block->children as $child) {
  99              $this->block($child);
 100          }
 101  
 102          if (!empty($block->selectors)) {
 103              if (!$isSingle && empty($block->children)) echo $this->break;
 104  
 105              if ($isSingle) {
 106                  echo $this->closeSingle . $this->break;
 107              } else {
 108                  echo $pre . $this->close . $this->break;
 109              }
 110  
 111              $this->indentLevel--;
 112          }
 113      }
 114  }