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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:36:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:36:22 +0000 |
commit | b88bb292821fd7742604ec4e280acebd9a049f62 (patch) | |
tree | 625e4e19e6619f7481e5a8103f876520950769f6 /src/utils/common/token.h | |
parent | Initial commit. (diff) | |
download | knot-b88bb292821fd7742604ec4e280acebd9a049f62.tar.xz knot-b88bb292821fd7742604ec4e280acebd9a049f62.zip |
Adding upstream version 3.0.5.upstream/3.0.5upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/utils/common/token.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/src/utils/common/token.h b/src/utils/common/token.h new file mode 100644 index 0000000..fab4ea1 --- /dev/null +++ b/src/utils/common/token.h @@ -0,0 +1,65 @@ +/* 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); |