用工小程序前端代码
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53 lines
1.0 KiB

7 months ago
  1. 'use strict';
  2. var zero = function (n, max) {
  3. n = n.toString(16).toUpperCase();
  4. while (n.length < max) {
  5. n = '0' + n;
  6. }
  7. return n;
  8. };
  9. module.exports = function (buffer) {
  10. var rows = Math.ceil(buffer.length / 16);
  11. var last = buffer.length % 16 || 16;
  12. var offsetLength = buffer.length.toString(16).length;
  13. if (offsetLength < 6) offsetLength = 6;
  14. var i;
  15. var str = '';
  16. var b = 0;
  17. var lastBytes;
  18. var lastSpaces;
  19. var v;
  20. for (i = 0; i < rows; i++) {
  21. str += '\u001b[36m' + zero(b, offsetLength) + '\u001b[0m ';
  22. lastBytes = i === rows - 1 ? last : 16;
  23. lastSpaces = 16 - lastBytes;
  24. var j;
  25. for (j = 0; j < lastBytes; j++) {
  26. str += ' ' + zero(buffer[b], 2);
  27. b++;
  28. }
  29. for (j = 0; j < lastSpaces; j++) {
  30. str += ' ';
  31. }
  32. b -= lastBytes;
  33. str += ' ';
  34. for (j = 0; j < lastBytes; j++) {
  35. v = buffer[b];
  36. str += (v > 31 && v < 127) || v > 159 ? String.fromCharCode(v) : '.';
  37. b++;
  38. }
  39. str += '\n';
  40. }
  41. return str;
  42. };