Function gmt_get_modifier

src/gmt_common_string.c:268–298

}

unsigned int gmt_get_modifier (const char *string, char modifier, char *token) {
	/* Looks for modifier string in the form +<modifier>[arg] and if found
	   returns 1 and places arg in token, else return 0.  Must ignore any
	   +<modifier> found inside quotes as part of text. If token is NULL
	   then we only return 1 or 0 and no string.
	*/
	bool quoted = false;
	size_t k, len, start = 0;

	if (!string || string[0] == 0) return 0;	/* No hope */
	len = strlen (string);
	for (k = 0; start == 0 && k < (len-1); k++) {
		if (string[k] == '\"' || string[k] == '\'') quoted = !quoted;	/* Initially false, becomes true at start of quote, then false when exit quote */
		if (quoted) continue;		/* Not look inside quoted strings */
		if (string[k] == '+' && string[k+1] == modifier)	/* Found the start */
			start = k+2;
	}
	if (start == 0) return 0;	/* Not found */
	for (k = start; k < len; k++) {
		if (string[k] == '\"' || string[k] == '\'') quoted = !quoted;	/* Initially false, becomes true at start of quote, then false when exit quote */
		if (quoted) continue;	/* Not look inside quoted strings */
		if (string[k] == '+')	/* Found the end */
			break;
	}
	len = k - start;
	if (token) {	/* Only pass back when token is not NULL */
		if (len) strncpy (token, &string[start], len);
		token[len] = '\0';
	}
	return 1;
}

#ifdef WIN32
/* Turn '/c/dir/...' paths into 'c:/dir/...'