1 /***************************************************************************/ 2 /* */ 3 /* ftinit.c */ 4 /* */ 5 /* FreeType initialization layer (body). */ 6 /* */ 7 /* Copyright 1996-2018 by */ 8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */ 9 /* */ 10 /* This file is part of the FreeType project, and may only be used, */ 11 /* modified, and distributed under the terms of the FreeType project */ 12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ 13 /* this file you indicate that you have read the license and */ 14 /* understand and accept it fully. */ 15 /* */ 16 /***************************************************************************/ 17 18 /*************************************************************************/ 19 /* */ 20 /* The purpose of this file is to implement the following two */ 21 /* functions: */ 22 /* */ 23 /* FT_Add_Default_Modules(): */ 24 /* This function is used to add the set of default modules to a */ 25 /* fresh new library object. The set is taken from the header file */ 26 /* `freetype/config/ftmodule.h'. See the document `FreeType 2.0 */ 27 /* Build System' for more information. */ 28 /* */ 29 /* FT_Init_FreeType(): */ 30 /* This function creates a system object for the current platform, */ 31 /* builds a library out of it, then calls FT_Default_Drivers(). */ 32 /* */ 33 /* Note that even if FT_Init_FreeType() uses the implementation of the */ 34 /* system object defined at build time, client applications are still */ 35 /* able to provide their own `ftsystem.c'. */ 36 /* */ 37 /*************************************************************************/ 38 39 40 #include <ft2build.h> 41 #include FT_CONFIG_CONFIG_H 42 #include FT_INTERNAL_OBJECTS_H 43 #include FT_INTERNAL_DEBUG_H 44 #include FT_MODULE_H 45 #include "basepic.h" 46 47 48 /*************************************************************************/ 49 /* */ 50 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ 51 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ 52 /* messages during execution. */ 53 /* */ 54 #undef FT_COMPONENT 55 #define FT_COMPONENT trace_init 56 57 58 #ifndef FT_CONFIG_OPTION_PIC 59 60 61 #undef FT_USE_MODULE 62 #ifdef __cplusplus 63 #define FT_USE_MODULE( type, x ) extern "C" const type x; 64 #else 65 #define FT_USE_MODULE( type, x ) extern const type x; 66 #endif 67 68 #include FT_CONFIG_MODULES_H 69 70 #undef FT_USE_MODULE 71 #define FT_USE_MODULE( type, x ) (const FT_Module_Class*)&(x), 72 73 static 74 const FT_Module_Class* const ft_default_modules[] = 75 { 76 #include FT_CONFIG_MODULES_H 77 0 78 }; 79 80 81 #else /* FT_CONFIG_OPTION_PIC */ 82 83 84 #ifdef __cplusplus 85 #define FT_EXTERNC extern "C" 86 #else 87 #define FT_EXTERNC extern 88 #endif 89 90 /* declare the module's class creation/destruction functions */ 91 #undef FT_USE_MODULE 92 #define FT_USE_MODULE( type, x ) \ 93 FT_EXTERNC FT_Error \ 94 FT_Create_Class_ ## x( FT_Library library, \ 95 FT_Module_Class* *output_class ); \ 96 FT_EXTERNC void \ 97 FT_Destroy_Class_ ## x( FT_Library library, \ 98 FT_Module_Class* clazz ); 99 100 #include FT_CONFIG_MODULES_H 101 102 /* count all module classes */ 103 #undef FT_USE_MODULE 104 #define FT_USE_MODULE( type, x ) MODULE_CLASS_ ## x, 105 106 enum 107 { 108 #include FT_CONFIG_MODULES_H 109 FT_NUM_MODULE_CLASSES 110 }; 111 112 /* destroy all module classes */ 113 #undef FT_USE_MODULE 114 #define FT_USE_MODULE( type, x ) \ 115 if ( classes[i] ) \ 116 { \ 117 FT_Destroy_Class_ ## x( library, classes[i] ); \ 118 } \ 119 i++; 120 121 122 FT_BASE_DEF( void ) 123 ft_destroy_default_module_classes( FT_Library library ) 124 { 125 FT_Module_Class* *classes; 126 FT_Memory memory; 127 FT_UInt i; 128 BasePIC* pic_container = (BasePIC*)library->pic_container.base; 129 130 131 if ( !pic_container->default_module_classes ) 132 return; 133 134 memory = library->memory; 135 classes = pic_container->default_module_classes; 136 i = 0; 137 138 #include FT_CONFIG_MODULES_H 139 140 FT_FREE( classes ); 141 pic_container->default_module_classes = NULL; 142 } 143 144 145 /* initialize all module classes and the pointer table */ 146 #undef FT_USE_MODULE 147 #define FT_USE_MODULE( type, x ) \ 148 error = FT_Create_Class_ ## x( library, &clazz ); \ 149 if ( error ) \ 150 goto Exit; \ 151 classes[i++] = clazz; 152 153 154 FT_BASE_DEF( FT_Error ) 155 ft_create_default_module_classes( FT_Library library ) 156 { 157 FT_Error error; 158 FT_Memory memory; 159 FT_Module_Class* *classes = NULL; 160 FT_Module_Class* clazz; 161 FT_UInt i; 162 BasePIC* pic_container = (BasePIC*)library->pic_container.base; 163 164 165 memory = library->memory; 166 167 pic_container->default_module_classes = NULL; 168 169 if ( FT_ALLOC( classes, sizeof ( FT_Module_Class* ) * 170 ( FT_NUM_MODULE_CLASSES + 1 ) ) ) 171 return error; 172 173 /* initialize all pointers to 0, especially the last one */ 174 for ( i = 0; i < FT_NUM_MODULE_CLASSES; i++ ) 175 classes[i] = NULL; 176 classes[FT_NUM_MODULE_CLASSES] = NULL; 177 178 i = 0; 179 180 #include FT_CONFIG_MODULES_H 181 182 Exit: 183 if ( error ) 184 ft_destroy_default_module_classes( library ); 185 else 186 pic_container->default_module_classes = classes; 187 188 return error; 189 } 190 191 192 #endif /* FT_CONFIG_OPTION_PIC */ 193 194 195 /* documentation is in ftmodapi.h */ 196 197 FT_EXPORT_DEF( void ) 198 FT_Add_Default_Modules( FT_Library library ) 199 { 200 FT_Error error; 201 const FT_Module_Class* const* cur; 202 203 204 /* FT_DEFAULT_MODULES_GET dereferences `library' in PIC mode */ 205 #ifdef FT_CONFIG_OPTION_PIC 206 if ( !library ) 207 return; 208 #endif 209 210 /* GCC 4.6 warns the type difference: 211 * FT_Module_Class** != const FT_Module_Class* const* 212 */ 213 cur = (const FT_Module_Class* const*)FT_DEFAULT_MODULES_GET; 214 215 /* test for valid `library' delayed to FT_Add_Module() */ 216 while ( *cur ) 217 { 218 error = FT_Add_Module( library, *cur ); 219 /* notify errors, but don't stop */ 220 if ( error ) 221 FT_TRACE0(( "FT_Add_Default_Module:" 222 " Cannot install `%s', error = 0x%x\n", 223 (*cur)->module_name, error )); 224 cur++; 225 } 226 } 227 228 229 #ifdef FT_CONFIG_OPTION_ENVIRONMENT_PROPERTIES 230 231 #define MAX_LENGTH 128 232 233 /* documentation is in ftmodapi.h */ | 1 /**************************************************************************** 2 * 3 * ftinit.c 4 * 5 * FreeType initialization layer (body). 6 * 7 * Copyright (C) 1996-2019 by 8 * David Turner, Robert Wilhelm, and Werner Lemberg. 9 * 10 * This file is part of the FreeType project, and may only be used, 11 * modified, and distributed under the terms of the FreeType project 12 * license, LICENSE.TXT. By continuing to use, modify, or distribute 13 * this file you indicate that you have read the license and 14 * understand and accept it fully. 15 * 16 */ 17 18 /************************************************************************** 19 * 20 * The purpose of this file is to implement the following two 21 * functions: 22 * 23 * FT_Add_Default_Modules(): 24 * This function is used to add the set of default modules to a 25 * fresh new library object. The set is taken from the header file 26 * `freetype/config/ftmodule.h'. See the document `FreeType 2.0 27 * Build System' for more information. 28 * 29 * FT_Init_FreeType(): 30 * This function creates a system object for the current platform, 31 * builds a library out of it, then calls FT_Default_Drivers(). 32 * 33 * Note that even if FT_Init_FreeType() uses the implementation of the 34 * system object defined at build time, client applications are still 35 * able to provide their own `ftsystem.c'. 36 * 37 */ 38 39 40 #include <ft2build.h> 41 #include FT_CONFIG_CONFIG_H 42 #include FT_INTERNAL_OBJECTS_H 43 #include FT_INTERNAL_DEBUG_H 44 #include FT_MODULE_H 45 46 47 /************************************************************************** 48 * 49 * The macro FT_COMPONENT is used in trace mode. It is an implicit 50 * parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log 51 * messages during execution. 52 */ 53 #undef FT_COMPONENT 54 #define FT_COMPONENT init 55 56 57 #undef FT_USE_MODULE 58 #ifdef __cplusplus 59 #define FT_USE_MODULE( type, x ) extern "C" const type x; 60 #else 61 #define FT_USE_MODULE( type, x ) extern const type x; 62 #endif 63 64 #include FT_CONFIG_MODULES_H 65 66 #undef FT_USE_MODULE 67 #define FT_USE_MODULE( type, x ) (const FT_Module_Class*)&(x), 68 69 static 70 const FT_Module_Class* const ft_default_modules[] = 71 { 72 #include FT_CONFIG_MODULES_H 73 0 74 }; 75 76 77 /* documentation is in ftmodapi.h */ 78 79 FT_EXPORT_DEF( void ) 80 FT_Add_Default_Modules( FT_Library library ) 81 { 82 FT_Error error; 83 const FT_Module_Class* const* cur; 84 85 86 /* GCC 4.6 warns the type difference: 87 * FT_Module_Class** != const FT_Module_Class* const* 88 */ 89 cur = (const FT_Module_Class* const*)ft_default_modules; 90 91 /* test for valid `library' delayed to FT_Add_Module() */ 92 while ( *cur ) 93 { 94 error = FT_Add_Module( library, *cur ); 95 /* notify errors, but don't stop */ 96 if ( error ) 97 FT_TRACE0(( "FT_Add_Default_Module:" 98 " Cannot install `%s', error = 0x%x\n", 99 (*cur)->module_name, error )); 100 cur++; 101 } 102 } 103 104 105 #ifdef FT_CONFIG_OPTION_ENVIRONMENT_PROPERTIES 106 107 #define MAX_LENGTH 128 108 109 /* documentation is in ftmodapi.h */ |