Question re: strtok

Pass strtok the separators "\r\n\t :"

I assume, that the line brealk is intentional. Then, you can use

char tag [] = "TYPE :";
char data[] = ...;
char result[128];

char* token;

token = strtok(data,"\n");

while ( token) {

    if (strstr(token,tag)) { // found "TYPE :"

        strcpy ( result, token + strlen(tag) + 1);

        break;
    }

    token = strtok(NULL, "\n");
}

>>"\r\n\t :"

That would return a lot of tokens...

Yes,

  INFO dev1 TYPE TYPE4 STYPE typ3

I was assuming those tokens were relevant, and would want to be tested. There's always a bit of mind-reading in EE when the questions are brief :-)

with the separators
\r\n\t...

it will only return the line:
TYPE : TYPE4 and not just TYPE4

Never mind...I fixed the previous problem but why is it when you have a while loop...while(token)...
if the token is never found, it does not break out of the loop?

>>if the token is never found, it does not break out of the loop?

If the token is not found, it won't even enter the loop, so don't worry about that.

it enters the loop looking for that token, and never breaks......
I changed the test string from "Type :" to "Tydddd :"
char surStr[1024];
         sprintf(surStr,"digital : hblahb\n"
                    "   Tydddd : CBCL\n"
                    "   Subtype : sdfasdf\n"
                    "   Bit Rate: dfsdfsddf"
                  );


char tag [] = "Type";
char result[128];
char* token;
token = strtok(surStr, ": \n ");

while (token)
{

       if (strstr(token, tag))
       {
   token = strtok(NULL, ": \n");
   printf("TOKEN %s\n ", token);
   break;
   }
}

That's not the delimiter I suggested:

char tag [] = "Type";
char result[128];
char* token;
token = strtok(surStr, "\n ");

while (token)
{

      if (strstr(token, tag))
      {
  token = strtok(NULL, ": \n");
  printf("TOKEN %s\n ", token);
  break;
  }
}

great!  it worked!  Thanks!  Quick question, I am using a string to tokenize.  I tried using c_str() within strtok but I received an error re: invalid conversion from const char* to char*...

strtok pokes '\0' characters into the actual string and therefore cannot be used with a const char*