/#/vendor/smarty/plugins/outputfilter.trimwhitespace.php

https://bitbucket.org/nemo_xiaolan/muyou · PHP · 93 lines · 50 code · 13 blank · 30 comment · 3 complexity · 9d32d6eea2817433c313b66541ffaa31 MD5 · raw file

  1. <?php
  2. /**
  3. * Smarty plugin
  4. *
  5. * @package Smarty
  6. * @subpackage PluginsFilter
  7. */
  8. /**
  9. * Smarty trimwhitespace outputfilter plugin
  10. *
  11. * Trim unnecessary whitespace from HTML markup.
  12. *
  13. * @author Rodney Rehm
  14. * @param string $source input string
  15. * @param Smarty_Internal_Template $smarty Smarty object
  16. * @return string filtered output
  17. * @todo substr_replace() is not overloaded by mbstring.func_overload - so this function might fail!
  18. */
  19. function smarty_outputfilter_trimwhitespace($source, Smarty_Internal_Template $smarty)
  20. {
  21. $store = array();
  22. $_store = 0;
  23. $_offset = 0;
  24. // Unify Line-Breaks to \n
  25. $source = preg_replace("/\015\012|\015|\012/", "\n", $source);
  26. // capture Internet Explorer Conditional Comments
  27. if (preg_match_all('#<!--\[[^\]]+\]>.*?<!\[[^\]]+\]-->#is', $source, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)) {
  28. foreach ($matches as $match) {
  29. $store[] = $match[0][0];
  30. $_length = strlen($match[0][0]);
  31. $replace = '@!@SMARTY:' . $_store . ':SMARTY@!@';
  32. $source = substr_replace($source, $replace, $match[0][1] - $_offset, $_length);
  33. $_offset += $_length - strlen($replace);
  34. $_store++;
  35. }
  36. }
  37. // Strip all HTML-Comments
  38. $source = preg_replace( '#<!--.*?-->#ms', '', $source );
  39. // capture html elements not to be messed with
  40. $_offset = 0;
  41. if (preg_match_all('#<(script|pre|textarea)[^>]*>.*?</\\1>#is', $source, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)) {
  42. foreach ($matches as $match) {
  43. $store[] = $match[0][0];
  44. $_length = strlen($match[0][0]);
  45. $replace = '@!@SMARTY:' . $_store . ':SMARTY@!@';
  46. $source = substr_replace($source, $replace, $match[0][1] - $_offset, $_length);
  47. $_offset += $_length - strlen($replace);
  48. $_store++;
  49. }
  50. }
  51. $expressions = array(
  52. // replace multiple spaces between tags by a single space
  53. // can't remove them entirely, becaue that might break poorly implemented CSS display:inline-block elements
  54. '#(:SMARTY@!@|>)\s+(?=@!@SMARTY:|<)#s' => '\1 \2',
  55. // remove spaces between attributes (but not in attribute values!)
  56. '#(([a-z0-9]\s*=\s*(["\'])[^\3]*?\3)|<[a-z0-9_]+)\s+([a-z/>])#is' => '\1 \4',
  57. // note: for some very weird reason trim() seems to remove spaces inside attributes.
  58. // maybe a \0 byte or something is interfering?
  59. '#^\s+<#Ss' => '<',
  60. '#>\s+$#Ss' => '>',
  61. );
  62. $source = preg_replace( array_keys($expressions), array_values($expressions), $source );
  63. // note: for some very weird reason trim() seems to remove spaces inside attributes.
  64. // maybe a \0 byte or something is interfering?
  65. // $source = trim( $source );
  66. // capture html elements not to be messed with
  67. $_offset = 0;
  68. if (preg_match_all('#@!@SMARTY:([0-9]+):SMARTY@!@#is', $source, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)) {
  69. foreach ($matches as $match) {
  70. $store[] = $match[0][0];
  71. $_length = strlen($match[0][0]);
  72. $replace = array_shift($store);
  73. $source = substr_replace($source, $replace, $match[0][1] + $_offset, $_length);
  74. $_offset += strlen($replace) - $_length;
  75. $_store++;
  76. }
  77. }
  78. return $source;
  79. }
  80. ?>