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| (Empty) |
| 1 // Return a single-proxy result, which encodes ALL the arguments that were | |
| 2 // passed to FindProxyForURL(). | |
| 3 | |
| 4 function FindProxyForURL(url, host) { | |
| 5 if (arguments.length != 2) { | |
| 6 throw "Wrong number of arguments passed to FindProxyForURL!"; | |
| 7 return "FAIL"; | |
| 8 } | |
| 9 | |
| 10 return "PROXY " + makePseudoHost(url + "." + host); | |
| 11 } | |
| 12 | |
| 13 // Form a string that kind-of resembles a host. We will replace any | |
| 14 // non-alphanumeric character with a dot, then fix up the oddly placed dots. | |
| 15 function makePseudoHost(str) { | |
| 16 var result = ""; | |
| 17 | |
| 18 for (var i = 0; i < str.length; ++i) { | |
| 19 var c = str.charAt(i); | |
| 20 if (!isValidPseudoHostChar(c)) { | |
| 21 c = '.'; // Replace unsupported characters with a dot. | |
| 22 } | |
| 23 | |
| 24 // Take care not to place multiple adjacent dots, | |
| 25 // a dot at the beginning, or a dot at the end. | |
| 26 if (c == '.' && | |
| 27 (result.length == 0 || | |
| 28 i == str.length - 1 || | |
| 29 result.charAt(result.length - 1) == '.')) { | |
| 30 continue; | |
| 31 } | |
| 32 result += c; | |
| 33 } | |
| 34 return result; | |
| 35 } | |
| 36 | |
| 37 function isValidPseudoHostChar(c) { | |
| 38 if (c >= '0' && c <= '9') | |
| 39 return true; | |
| 40 if (c >= 'a' && c <= 'z') | |
| 41 return true; | |
| 42 if (c >= 'A' && c <= 'Z') | |
| 43 return true; | |
| 44 return false; | |
| 45 } | |
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