Function pj_trim_argv

ThirdParty/libproj/vtklibproj/src/internal.cpp:319–352

/

/*****************************************************************************/
char **pj_trim_argv (size_t argc, char *args) {
/******************************************************************************
Create an argv-style array from elements placed in the argument string, args.

args is a trimmed string as returned by pj_trim_argc(), and argc is the number
of trimmed strings found (i.e. the return value of pj_trim_args()). Hence,
    int argc    = pj_trim_argc (args);
    char **argv = pj_trim_argv (argc, args);
will produce a classic style (argc, argv) pair from a string of whitespace
separated args. No new memory is allocated for storing the individual args
(they stay in the args string), but for the pointers to the args a new array
is allocated and returned.

It is the duty of the caller to free this array.
******************************************************************************/

    if (nullptr==args)
        return nullptr;
    if (0==argc)
        return nullptr;


    /* turn the input string into an array of strings */
    char** argv = (char **) calloc (argc, sizeof (char *));
    if (nullptr==argv)
        return nullptr;
    for(size_t i = 0, j = 0; j < argc; j++) {
        argv[j] = args + i;
        char* str = argv[j];
        size_t nLen = strlen(str);
        i += nLen + 1;
    }
    return argv;
}


/*****************************************************************************/