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}
function replaceSubstring(inputString, fromString, toString) {
// Goes through the inputString and replaces every occurrence of fromString with toString
var temp = inputString;
if (fromString == "") {
return inputString;
}
if (toString.indexOf(fromString) == -1) { // If the string being replaced is not a part of the replacement string (normal situation)
while (temp.indexOf(fromString) != -1) {
var toTheLeft = temp.substring(0, temp.indexOf(fromString));
var toTheRight = temp.substring(temp.indexOf(fromString)+fromString.length, temp.length);
temp = toTheLeft + toString + toTheRight;
}
} else { // String being replaced is part of replacement string (like "+" being replaced with "++") - prevent an infinite loop
var midStrings = new Array("~", "`", "_", "^", "#");
var midStringLen = 1;
var midString = "";
// Find a string that doesn't exist in the inputString to be used
// as an "inbetween" string
while (midString == "") {
for (var i=0; i < midStrings.length; i++) {
var tempMidString = "";
for (var j=0; j < midStringLen; j++) { tempMidString += midStrings[i]; }
if (fromString.indexOf(tempMidString) == -1) {
midString = tempMidString;
i = midStrings.length + 1;
}
}
} // Keep on going until we build an "inbetween" string that doesn't exist
// Now go through and do two replaces - first, replace the "fromString" with the "inbetween" string
while (temp.indexOf(fromString) != -1) {
var toTheLeft = temp.substring(0, temp.indexOf(fromString));
var toTheRight = temp.substring(temp.indexOf(fromString)+fromString.length, temp.length);
temp = toTheLeft + midString + toTheRight;
}
// Next, replace the "inbetween" string with the "toString"
while (temp.indexOf(midString) != -1) {
var toTheLeft = temp.substring(0, temp.indexOf(midString));
var toTheRight = temp.substring(temp.indexOf(midString)+midString.length, temp.length);
temp = toTheLeft + toString + toTheRight;
}
} // Ends the check to see if the string being replaced is part of the replacement string or not
return temp; // Send the updated string back to the user
} // Ends the "replaceSubstring" function
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