strtok - How to split nested deliminated strings in c? -

i wondering, how able split kind of strings.

for example have following string: "80,8080,27001-27010,90"

i first want split @ comma if there minus in substring want split , difference between 2 numbers converting them via atoi(). string want split list of ports, , want generate array of integer ports enumerated. strtok-function seems not suitable problem, there easy solution this?

using of strtok_r example:

 substr1 = strtok_r(portlist, delim1, &saveptr1);  while(substr1 != null){     substr2 = strtok_r(substr1, delim2, &saveptr2);     substr1 = strtok_r(null, delim2, &saveptr1);  } 

in particular case, can use strchr find point split token, thereby avoiding losing progress.

another way use strtok_r, reentrant version of strtok doesn't have internal state.

edit:

strtok_r not part of standard c. part of posix.1-2001. think major compilers support it. in windows, corresponding function called strtok_s. way make portable

#if defined(_win32) || defined(_win64) /* on windows */ # define strtok_r strtok_s #endif 

as described in joachim pileborgs answer what's difference between strtok_r , strtok_s in c?