Yaml.php 3.0 KB

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  1. <?php
  2. /*
  3. * This file is part of the Symfony package.
  4. *
  5. * (c) Fabien Potencier <fabien@symfony.com>
  6. *
  7. * For the full copyright and license information, please view the LICENSE
  8. * file that was distributed with this source code.
  9. */
  10. namespace Symfony\Component\Yaml;
  11. use Symfony\Component\Yaml\Exception\ParseException;
  12. /**
  13. * Yaml offers convenience methods to load and dump YAML.
  14. *
  15. * @author Fabien Potencier <fabien@symfony.com>
  16. *
  17. * @final
  18. */
  19. class Yaml
  20. {
  21. public const DUMP_OBJECT = 1;
  22. public const PARSE_EXCEPTION_ON_INVALID_TYPE = 2;
  23. public const PARSE_OBJECT = 4;
  24. public const PARSE_OBJECT_FOR_MAP = 8;
  25. public const DUMP_EXCEPTION_ON_INVALID_TYPE = 16;
  26. public const PARSE_DATETIME = 32;
  27. public const DUMP_OBJECT_AS_MAP = 64;
  28. public const DUMP_MULTI_LINE_LITERAL_BLOCK = 128;
  29. public const PARSE_CONSTANT = 256;
  30. public const PARSE_CUSTOM_TAGS = 512;
  31. public const DUMP_EMPTY_ARRAY_AS_SEQUENCE = 1024;
  32. public const DUMP_NULL_AS_TILDE = 2048;
  33. /**
  34. * Parses a YAML file into a PHP value.
  35. *
  36. * Usage:
  37. *
  38. * $array = Yaml::parseFile('config.yml');
  39. * print_r($array);
  40. *
  41. * @param string $filename The path to the YAML file to be parsed
  42. * @param int $flags A bit field of PARSE_* constants to customize the YAML parser behavior
  43. *
  44. * @return mixed The YAML converted to a PHP value
  45. *
  46. * @throws ParseException If the file could not be read or the YAML is not valid
  47. */
  48. public static function parseFile(string $filename, int $flags = 0)
  49. {
  50. $yaml = new Parser();
  51. return $yaml->parseFile($filename, $flags);
  52. }
  53. /**
  54. * Parses YAML into a PHP value.
  55. *
  56. * Usage:
  57. * <code>
  58. * $array = Yaml::parse(file_get_contents('config.yml'));
  59. * print_r($array);
  60. * </code>
  61. *
  62. * @param string $input A string containing YAML
  63. * @param int $flags A bit field of PARSE_* constants to customize the YAML parser behavior
  64. *
  65. * @return mixed The YAML converted to a PHP value
  66. *
  67. * @throws ParseException If the YAML is not valid
  68. */
  69. public static function parse(string $input, int $flags = 0)
  70. {
  71. $yaml = new Parser();
  72. return $yaml->parse($input, $flags);
  73. }
  74. /**
  75. * Dumps a PHP value to a YAML string.
  76. *
  77. * The dump method, when supplied with an array, will do its best
  78. * to convert the array into friendly YAML.
  79. *
  80. * @param mixed $input The PHP value
  81. * @param int $inline The level where you switch to inline YAML
  82. * @param int $indent The amount of spaces to use for indentation of nested nodes
  83. * @param int $flags A bit field of DUMP_* constants to customize the dumped YAML string
  84. *
  85. * @return string A YAML string representing the original PHP value
  86. */
  87. public static function dump($input, int $inline = 2, int $indent = 4, int $flags = 0): string
  88. {
  89. $yaml = new Dumper($indent);
  90. return $yaml->dump($input, $inline, 0, $flags);
  91. }
  92. }