/*
 * Copyright (C) 2003-2011 The Music Player Daemon Project
 * http://www.musicpd.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef MPD_TOKENIZER_H
#define MPD_TOKENIZER_H

#include "gerror.h"

/**
 * Reads the next word from the input string.  This function modifies
 * the input string.
 *
 * @param input_p the input string; this function returns a pointer to
 * the first non-whitespace character of the following token
 * @param error_r if this function returns NULL and **input_p!=0, it
 * optionally provides a GError object in this argument
 * @return a pointer to the null-terminated word, or NULL on error or
 * end of line
 */
char *
tokenizer_next_word(char **input_p, GError **error_r);

/**
 * Reads the next unquoted word from the input string.  This function
 * modifies the input string.
 *
 * @param input_p the input string; this function returns a pointer to
 * the first non-whitespace character of the following token
 * @param error_r if this function returns NULL and **input_p!=0, it
 * optionally provides a GError object in this argument
 * @return a pointer to the null-terminated word, or NULL on error or
 * end of line
 */
char *
tokenizer_next_unquoted(char **input_p, GError **error_r);

/**
 * Reads the next quoted string from the input string.  A backslash
 * escapes the following character.  This function modifies the input
 * string.
 *
 * @param input_p the input string; this function returns a pointer to
 * the first non-whitespace character of the following token
 * @param error_r if this function returns NULL and **input_p!=0, it
 * optionally provides a GError object in this argument
 * @return a pointer to the null-terminated string, or NULL on error
 * or end of line
 */
char *
tokenizer_next_string(char **input_p, GError **error_r);

/**
 * Reads the next unquoted word or quoted string from the input.  This
 * is a wrapper for tokenizer_next_unquoted() and
 * tokenizer_next_string().
 *
 * @param input_p the input string; this function returns a pointer to
 * the first non-whitespace character of the following token
 * @param error_r if this function returns NULL and **input_p!=0, it
 * optionally provides a GError object in this argument
 * @return a pointer to the null-terminated string, or NULL on error
 * or end of line
 */
char *
tokenizer_next_param(char **input_p, GError **error_r);

#endif