| Chompy |
12-11-2011 06:58 PM |
String and number range checks
This is a function I made while working on my RegEx parser which is soon finished. I thought I would release this so others could perhaps use it for validation and checks etc. Good example: Limit and validation of input
The use of ascii values is pretty obvious,
NPC Code:
if ("a" == "A") {
echo("a equals A");
}
Here's the code. Haven't heavy tested it so might my bugs.
PHP Code:
// V1.0
function onCreated() {
this.NR = "48,49,50,51,52,53,54,55,56,57";
this.az = "97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122";
this.AZ = "65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90";
}
public function rangecheck(rangecheck, string) {
if (rangecheck.charat(0) == "[")
rangecheck = rangecheck.substring(1, rangecheck.length()-2);
temp.hyphens = rangecheck.positions("-");
temp.ranges = {};
for(temp.i : temp.hyphens) {
temp.ranges.add(rangecheck.substring(temp.i-1, 3));
}
temp.check = false;
for(temp.range : temp.ranges) {
temp.value1 = temp.range.charat(0);
temp.value2 = temp.range.charat(2);
temp.array = "error";
if ((getascii(temp.value1) in this.NR) && (getascii(string) in this.NR)) {
temp.array = this.NR;
}
else if (getascii(temp.value1) in this.az) {
if ((getascii(temp.value2) in this.az) && (getascii(string) in this.az)) {
temp.array = this.az;
}
}
else if ((getascii(temp.value1) in this.AZ) && (getascii(string) in this.AZ)) {
temp.array = this.AZ;
}
else if (temp.array == "error") continue;
temp.startpoint = temp.array.index(getascii(temp.value1));
temp.endpoint = temp.array.index(getascii(temp.value2));
temp.arraycheck = temp.array.subarray(
temp.startpoint, (temp.endpoint-temp.startpoint+1)
);
if (getascii(string) in temp.arraycheck) {
temp.check = true;
break;
}
}
return temp.check;
}
public function is_nr(input) {
return (getascii(input) in this.NR);
}
public function is_az(input) {
return (getascii(input) in this.az);
}
public function is_AZ(input) {
return (getascii(input) in this.AZ);
}
Examples:
PHP Code:
/*
rangecheck(range, string);
Takes a range and check if the string character is within this range
ranges:
0-9: any number between 0 and 9
a-z: any character between lowercase a and lowercase z
A-Z: any character between uppercase A and uppercase Z
you write ranges like this:
[0-4a-f]: would check if character is one of 0,1,2,3,4 or a,b,c,d,e,f
[0-9a-fA-F]: would check if character is between 0 and 9, a and f and A and F
[1-3a-cA-C]: would check if character is one of 1,2,3,a,b,c,A,B,C
string: a single character, a letter or number
*/
function onCreated() {
this.join("module_regex_rangecheck");
echo(rangecheck("[0-9a-f]", "f")); // true, f is within the a-f range
}
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