Function poptDupArgv

popt/poptparse.c:13–52

#define POPT_ARGV_ARRAY_GROW_DELTA 5

int poptDupArgv(int argc, const char **argv,
		int * argcPtr, const char *** argvPtr)
{
    size_t nb = (argc + 1) * sizeof(*argv);
    const char ** argv2;
    char * dst;
    int i;

    if (argc <= 0 || argv == NULL)	/* XXX can't happen */
	return POPT_ERROR_NOARG;
    for (i = 0; i < argc; i++) {
	if (argv[i] == NULL)
	    return POPT_ERROR_NOARG;
	nb += strlen(argv[i]) + 1;
    }
	
    dst = malloc(nb);
    if (dst == NULL)			/* XXX can't happen */
	return POPT_ERROR_MALLOC;
    argv2 = (void *) dst;
    dst += (argc + 1) * sizeof(*argv);
    *dst = '\0';

    for (i = 0; i < argc; i++) {
	argv2[i] = dst;
	dst = stpcpy(dst, argv[i]);
	dst++;	/* trailing NUL */
    }
    argv2[argc] = NULL;

    if (argvPtr) {
	*argvPtr = argv2;
    } else {
	free(argv2);
	argv2 = NULL;
    }
    if (argcPtr)
	*argcPtr = argc;
    return 0;
}

int poptParseArgvString(const char * s, int * argcPtr, const char *** argvPtr)
{