1 /***************************************************************************/ 2 /* */ 3 /* fthash.h */ 4 /* */ 5 /* Hashing functions (specification). */ 6 /* */ 7 /***************************************************************************/ 8 9 /* 10 * Copyright 2000 Computing Research Labs, New Mexico State University 11 * Copyright 2001-2015 12 * Francesco Zappa Nardelli 13 * 14 * Permission is hereby granted, free of charge, to any person obtaining a 15 * copy of this software and associated documentation files (the "Software"), 16 * to deal in the Software without restriction, including without limitation 17 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 18 * and/or sell copies of the Software, and to permit persons to whom the 19 * Software is furnished to do so, subject to the following conditions: 20 * 21 * The above copyright notice and this permission notice shall be included in 22 * all copies or substantial portions of the Software. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 27 * THE COMPUTING RESEARCH LAB OR NEW MEXICO STATE UNIVERSITY BE LIABLE FOR ANY 28 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT 29 * OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR 30 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. 31 */ 32 33 /*************************************************************************/ 34 /* */ 35 /* This file is based on code from bdf.c,v 1.22 2000/03/16 20:08:50 */ 36 /* */ 37 /* taken from Mark Leisher's xmbdfed package */ 38 /* */ 39 /*************************************************************************/ 40 41 42 #ifndef FTHASH_H_ 43 #define FTHASH_H_ 44 45 46 #include <ft2build.h> 47 #include FT_FREETYPE_H 48 49 50 FT_BEGIN_HEADER 51 52 53 typedef union FT_Hashkey_ 54 { 55 FT_Int num; 56 const char* str; 57 58 } FT_Hashkey; 59 60 61 typedef struct FT_HashnodeRec_ 62 { 63 FT_Hashkey key; 64 size_t data; 65 66 } FT_HashnodeRec; 67 68 typedef struct FT_HashnodeRec_ *FT_Hashnode; 69 70 71 typedef FT_ULong 72 (*FT_Hash_LookupFunc)( FT_Hashkey* key ); 73 74 typedef FT_Bool 75 (*FT_Hash_CompareFunc)( FT_Hashkey* a, 76 FT_Hashkey* b ); 77 78 79 typedef struct FT_HashRec_ 80 { 81 FT_UInt limit; 82 FT_UInt size; 83 FT_UInt used; 84 85 FT_Hash_LookupFunc lookup; 86 FT_Hash_CompareFunc compare; 87 88 FT_Hashnode* table; 89 90 } FT_HashRec; 91 92 typedef struct FT_HashRec_ *FT_Hash; 93 94 95 FT_Error 96 ft_hash_str_init( FT_Hash hash, 97 FT_Memory memory ); 98 99 FT_Error 100 ft_hash_num_init( FT_Hash hash, 101 FT_Memory memory ); 102 103 void 104 ft_hash_str_free( FT_Hash hash, 105 FT_Memory memory ); 106 107 #define ft_hash_num_free ft_hash_str_free 108 109 FT_Error 110 ft_hash_str_insert( const char* key, 111 size_t data, 112 FT_Hash hash, 113 FT_Memory memory ); 114 115 FT_Error 116 ft_hash_num_insert( FT_Int num, 117 size_t data, 118 FT_Hash hash, 119 FT_Memory memory ); 120 121 size_t* 122 ft_hash_str_lookup( const char* key, 123 FT_Hash hash ); 124 125 size_t* 126 ft_hash_num_lookup( FT_Int num, 127 FT_Hash hash ); 128 129 130 FT_END_HEADER 131 132 133 #endif /* FTHASH_H_ */ 134 135 136 /* END */ 137