strtok not working well - c++

Question

I have a problem. Believe me, I started using this strtok() function at 1 or 2AM. and it is 4:22AM now. >.<
The problem is this:
1. WHEN I INPUT A "blue", the three tokens are okay.
2. When I input a "red" or a "green", the three tokens are NULL :( .
const char s[2] = "~"; //for cutting;
char inData[100]; // Allocate some space for the string
char *token;
char *token2;
char *token3;
char x1[100];
char x2[100];
char x3[100];
char Comp(char* This) {
while (Serial.available() > 0) // Don't read unless
// there you know there is data
{
if(index < 99) // One less than the size of the array
{
inChar = Serial.read(); // Read a character
inData[index] = inChar; // Store it
index++; // Increment where to write next
// inData[index] = '\0'; // Null terminate the string
}
}
token = strtok(inData, s);
strcpy(x1,token);
token2 = strtok(NULL, s);
strcpy(x2,token2);
token3 = strtok(NULL, s);
strcpy(x3,token3);
if (strcmp(x1,This) == 0) {
Serial.println(x1);
Serial.println(x2);
Serial.println(x3);
for (int i=0;i<99;i++) {
inData[i]=0;
}
index=0;
return(0);
}
else {
return(1);
}
}
How I call the function Comp:
if(Comp("blue")==0){
Serial.println("BLUE SELECTED");
analogWrite(9, 0);
analogWrite(10,255);
analogWrite(11,255);
}
if(Comp("green")==0){
Serial.println("GREEN SELECTED");
analogWrite(10,0);
analogWrite(11,255);
analogWrite(9,255);
}
if(Comp("red")==0){
Serial.println("RED SELECTED");
analogWrite(10,255);
analogWrite(11,0);
analogWrite(9,255);
}
OUTPUTS:
when I input: "blue~lalalalal~kakakakaekkewew"
it outputs:
blue
lalalalal
kawawawawewew
blue selected
when I input: "red~123~321
it outputs:
red
red selected
when I input: "green~123~321"
it outputs
green
green selected

Answer 1

this is the way I solved the bug.
changed the way I receive the data.
char Comp(char* This) {
while(Serial.available()) {
inChar = Serial.read();
inData.concat(inChar);
}
strcpy(inData2, inData.c_str());
token = strtok(inData2, s);
strcpy(x1,token);
token = strtok(NULL, s);
strcpy(x2,token);
token = strtok(NULL, s);
strcpy(x3,token);
if (strcmp(x1,This) == 0) {
Serial.println(x1);
Serial.println(x2);
Serial.println(x3);
inData = "";
inChar = '\0';
return(0);
}
else {
return(1);
}
}