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/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
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 3 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, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include <stdio.h>
/*!
* \brief Example of token table:
*
* \warning Table _must_ be lexicographically ordered.
*
* const char *tok_tbl[] = {
* // LEN STRING
* "\x4" "abcd",
* "\x5" "class",
* NULL // END
* }
*/
/*! \brief String part of the token. */
#define TOK_S(x) ((x)+1)
/*! \brief Len of the token. */
#define TOK_L(x) ((unsigned char)(x)[0])
/*!
* \brief Scan for matching token described by a match table.
*
* Table consists of strings, prefixed with 1B length.
*
* \param lp Pointer to current line.
* \param tbl Match description table.
* \param lpm Pointer to longest prefix match.
* \retval index to matching record.
* \retval -1 if no match is found, lpm may be set to longest prefix match.
*/
int tok_scan(const char* lp, const char **tbl, int *lpm);
/*!
* \brief Find token from table in a line buffer.
* \param lp Pointer to current line.
* \param tbl Match description table.
* \retval index to matching record.
* \retval error code if no match is found
*/
int tok_find(const char *lp, const char **tbl);
/*!
* \brief Return pointer to next non-blank character.
* \param lp Pointer to current line.
* \return ptr to next non-blank character.
*/
const char *tok_skipspace(const char *lp);
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