string.js 2.2 KB

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  1. // Copyright (C) 2013 Google Inc. All rights reserved.
  2. //
  3. // Redistribution and use in source and binary forms, with or without
  4. // modification, are permitted provided that the following conditions are
  5. // met:
  6. //
  7. // * Redistributions of source code must retain the above copyright
  8. // notice, this list of conditions and the following disclaimer.
  9. // * Redistributions in binary form must reproduce the above
  10. // copyright notice, this list of conditions and the following disclaimer
  11. // in the documentation and/or other materials provided with the
  12. // distribution.
  13. // * Neither the name of Google Inc. nor the names of its
  14. // contributors may be used to endorse or promote products derived from
  15. // this software without specific prior written permission.
  16. //
  17. // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18. // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19. // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  20. // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  21. // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22. // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23. // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24. // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25. // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26. // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  27. // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28. // @fileoverview Generic string utility functions.
  29. var string = string || {};
  30. (function() {
  31. string.contains = function(a, b)
  32. {
  33. return a.indexOf(b) != -1;
  34. }
  35. string.caseInsensitiveContains = function(a, b)
  36. {
  37. return a.match(new RegExp(b, 'i'));
  38. }
  39. string.startsWith = function(a, b)
  40. {
  41. return a.indexOf(b) == 0;
  42. }
  43. string.endsWith = function(a, b)
  44. {
  45. return a.lastIndexOf(b) == a.length - b.length;
  46. }
  47. string.isValidName = function(str)
  48. {
  49. return str.match(/[A-Za-z0-9\-\_,]/);
  50. }
  51. string.trimString = function(str)
  52. {
  53. return str.replace(/^\s+|\s+$/g, '');
  54. }
  55. string.collapseWhitespace = function(str)
  56. {
  57. return str.replace(/\s+/g, ' ');
  58. }
  59. })();