Function ParseLongOption

src/backend/utils/misc/guc.c:11563–11592

* A little "long argument" simulation, although not quite GNU * compliant. Takes a string of the form "some-option=some value" and * returns name = "some_option" and value = "some value" in malloc'ed * storage. Note that '-' is converted to '_' in the option name. If * there is no '=' in the input string then value will be NULL. */

 * there is no '=' in the input string then value will be NULL.
 */
void
ParseLongOption(const char *string, char **name, char **value)
{
	size_t		equal_pos;
	char	   *cp;

	AssertArg(string);
	AssertArg(name);
	AssertArg(value);

	equal_pos = strcspn(string, "=");

	if (string[equal_pos] == '=')
	{
		*name = guc_malloc(FATAL, equal_pos + 1);
		strlcpy(*name, string, equal_pos + 1);

		*value = guc_strdup(FATAL, &string[equal_pos + 1]);
	}
	else
	{
		/* no equal sign in string */
		*name = guc_strdup(FATAL, string);
		*value = NULL;
	}

	for (cp = *name; *cp; cp++)
		if (*cp == '-')
			*cp = '_';
}


/*