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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/libknot/lookup.h | |
parent | Initial commit. (diff) | |
download | knot-upstream.tar.xz knot-upstream.zip |
Adding upstream version 3.0.5.upstream/3.0.5upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/libknot/lookup.h')
-rw-r--r-- | src/libknot/lookup.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/src/libknot/lookup.h b/src/libknot/lookup.h new file mode 100644 index 0000000..8599aa3 --- /dev/null +++ b/src/libknot/lookup.h @@ -0,0 +1,89 @@ +/* Copyright (C) 2017 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/>. + */ + +/*! + * \file + * + * \brief A general purpose lookup table. + * + * \addtogroup libknot + * @{ + */ + +#pragma once + +#include <string.h> +#include <strings.h> + +/*! + * \brief A general purpose lookup table. + */ +typedef struct knot_lookup { + int id; + const char *name; +} knot_lookup_t; + +/*! + * \brief Looks up the given name in the lookup table. + * + * \param table Lookup table. + * \param name Name to look up. + * + * \return Item in the lookup table with the given name or NULL if no such is + * present. + */ +inline static const knot_lookup_t *knot_lookup_by_name(const knot_lookup_t *table, const char *name) +{ + if (table == NULL || name == NULL) { + return NULL; + } + + while (table->name != NULL) { + if (strcasecmp(name, table->name) == 0) { + return table; + } + table++; + } + + return NULL; +} + +/*! + * \brief Looks up the given id in the lookup table. + * + * \param table Lookup table. + * \param id ID to look up. + * + * \return Item in the lookup table with the given id or NULL if no such is + * present. + */ +inline static const knot_lookup_t *knot_lookup_by_id(const knot_lookup_t *table, int id) +{ + if (table == NULL) { + return NULL; + } + + while (table->name != NULL) { + if (table->id == id) { + return table; + } + table++; + } + + return NULL; +} + +/*! @} */ |