The Tor Browser / file comparison
comparison: config/string-format.js
config/string-format.js
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:db6f2921e5f1 |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 String.prototype.format = function string_format() { | |
| 6 // there are two modes of operation... unnamed indices are read in order; | |
| 7 // named indices using %(name)s. The two styles cannot be mixed. | |
| 8 // Unnamed indices can be passed as either a single argument to this function, | |
| 9 // multiple arguments to this function, or as a single array argument | |
| 10 let curindex = 0; | |
| 11 let d; | |
| 12 | |
| 13 if (arguments.length > 1) { | |
| 14 d = arguments; | |
| 15 } | |
| 16 else | |
| 17 d = arguments[0]; | |
| 18 | |
| 19 function r(s, key, type) { | |
| 20 if (type == '%') | |
| 21 return '%'; | |
| 22 | |
| 23 let v; | |
| 24 if (key == "") { | |
| 25 if (curindex == -1) | |
| 26 throw Error("Cannot mix named and positional indices in string formatting."); | |
| 27 | |
| 28 if (curindex == 0 && (!(d instanceof Object) || !(0 in d))) { | |
| 29 v = d; | |
| 30 } | |
| 31 else if (!(curindex in d)) | |
| 32 throw Error("Insufficient number of items in format, requesting item %i".format(curindex)); | |
| 33 else { | |
| 34 v = d[curindex]; | |
| 35 } | |
| 36 | |
| 37 ++curindex; | |
| 38 } | |
| 39 else { | |
| 40 key = key.slice(1, -1); | |
| 41 if (curindex > 0) | |
| 42 throw Error("Cannot mix named and positional indices in string formatting."); | |
| 43 curindex = -1; | |
| 44 | |
| 45 if (!(key in d)) | |
| 46 throw Error("Key '%s' not present during string substitution.".format(key)); | |
| 47 v = d[key]; | |
| 48 } | |
| 49 switch (type) { | |
| 50 case "s": | |
| 51 if (v === undefined) | |
| 52 return "<undefined>"; | |
| 53 return v.toString(); | |
| 54 case "r": | |
| 55 return uneval(v); | |
| 56 case "i": | |
| 57 return parseInt(v); | |
| 58 case "f": | |
| 59 return Number(v); | |
| 60 default: | |
| 61 throw Error("Unexpected format character '%s'.".format(type)); | |
| 62 } | |
| 63 } | |
| 64 return this.replace(/%(\([^)]+\))?(.)/g, r); | |
| 65 }; |
