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// Return a single-proxy result, which encodes ALL the arguments that were
// passed to FindProxyForURL().
function FindProxyForURL(url, host) {
if (arguments.length != 2) {
throw "Wrong number of arguments passed to FindProxyForURL!";
return "FAIL";
}
return "PROXY " + makePseudoHost(url + "." + host);
}
// Form a string that kind-of resembles a host. We will replace any
// non-alphanumeric character with a dot, then fix up the oddly placed dots.
function makePseudoHost(str) {
var result = "";
for (var i = 0; i < str.length; ++i) {
var c = str.charAt(i);
if (!isValidPseudoHostChar(c)) {
c = '.'; // Replace unsupported characters with a dot.
}
// Take care not to place multiple adjacent dots,
// a dot at the beginning, or a dot at the end.
if (c == '.' &&
(result.length == 0 ||
i == str.length - 1 ||
result.charAt(result.length - 1) == '.')) {
continue;
}
result += c;
}
return result;
}
function isValidPseudoHostChar(c) {
if (c >= '0' && c <= '9')
return true;
if (c >= 'a' && c <= 'z')
return true;
if (c >= 'A' && c <= 'Z')
return true;
return false;
}
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