| 1 |
|
| 2 | /**
|
| 3 | * Module dependencies.
|
| 4 | */
|
| 5 |
|
| 6 | var crypto = require('crypto');
|
| 7 |
|
| 8 | /**
|
| 9 | * Return a weak ETag from the given `path` and `stat`.
|
| 10 | *
|
| 11 | * @param {String} path
|
| 12 | * @param {Object} stat
|
| 13 | * @return {String}
|
| 14 | * @api private
|
| 15 | */
|
| 16 |
|
| 17 | exports.etag = function etag(path, stat) {
|
| 18 | var tag = String(stat.mtime.getTime()) + ':' + String(stat.size) + ':' + path;
|
| 19 | var str = crypto
|
| 20 | .createHash('md5')
|
| 21 | .update(tag, 'utf8')
|
| 22 | .digest('base64');
|
| 23 | return 'W/"' + str + '"';
|
| 24 | };
|
| 25 |
|
| 26 | /**
|
| 27 | * decodeURIComponent.
|
| 28 | *
|
| 29 | * Allows V8 to only deoptimize this fn instead of all
|
| 30 | * of send().
|
| 31 | *
|
| 32 | * @param {String} path
|
| 33 | * @api private
|
| 34 | */
|
| 35 |
|
| 36 | exports.decode = function(path){
|
| 37 | try {
|
| 38 | return decodeURIComponent(path);
|
| 39 | } catch (err) {
|
| 40 | return -1;
|
| 41 | }
|
| 42 | };
|