#ifndef _STRING_UTIL_H
#define _STRING_UTIL_H

#include <string.h>

/* like strtok(3), but without state, and doesn't modify s.  Return
 * value is indicated by pointer and length, not null terminator.
 *
 * Usage pattern:
 *
 * const char *tok = input;
 * const char *delim = " \t";
 * size_t tok_len = 0;
 *
 * while ((tok = strtok_len (tok + tok_len, delim, &tok_len)) != NULL) {
 *     // do stuff with string tok of length tok_len
 * }
 */

char *strtok_len (char *s, const char *delim, size_t *len);

/* Copy str to dest, surrounding with double quotes.
 * Any internal double-quotes are doubled, i.e. a"b -> "a""b"
 *
 * Output is into buf; it may be talloc_realloced
 * return 0 on success, non-zero on failure.
 */
int double_quote_str (void *talloc_ctx, const char *str,
		      char **buf, size_t *len);
#endif