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Diffstat (limited to 'include/hash.h')
-rw-r--r-- | include/hash.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/include/hash.h b/include/hash.h new file mode 100644 index 0000000..f9072a7 --- /dev/null +++ b/include/hash.h @@ -0,0 +1,61 @@ +/* hash.h: declarations for a hash table. + +Copyright (C) 1994, 95 Karl Berry. + +This library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public +License as published by the Free Software Foundation; either +version 2 of the License, or (at your option) any later version. + +This library 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with this library; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#ifndef HASH_H +#define HASH_H + +#include <kpathsea/c-proto.h> +#include <kpathsea/types.h> + + +/* A single (key,value) pair. */ +typedef struct hash_element_struct +{ + const_string key; + const_string value; + struct hash_element_struct *next; +} hash_element_type; + +/* The usual arrangement of buckets initialized to null. */ +typedef struct +{ + hash_element_type **buckets; + unsigned size; +} hash_table_type; + +#ifdef KPSE_DEBUG +/* How to print the hash results when debugging. */ +extern boolean kpse_debug_hash_lookup_int; +#endif + +/* Create a hash table of size SIZE. */ +extern hash_table_type hash_create P1H(unsigned size); + +/* Insert the (KEY,VALUE) association into TABLE. KEY may have more + than one VALUE. Neither KEY nor VALUE is copied. */ +extern void hash_insert P3H(hash_table_type *table, const_string key, + const_string value); + +/* Look up KEY in MAP, and return NULL-terminated list of all matching + values (not copies), in insertion order. If none, return NULL. */ +extern string *hash_lookup P2H(hash_table_type table, const_string key); + +/* Print TABLE to stderr. */ +extern void hash_print P2H(hash_table_type table, boolean summary_only); + +#endif /* not HASH_H */ |