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/**************************************************************************/ / / / ftmoderr.h / / / / FreeType module error offsets (specification). / / / / Copyright 2001-2018 by / / David Turner, Robert Wilhelm, and Werner Lemberg. / / / / This file is part of the FreeType project, and may only be used, / / modified, and distributed under the terms of the FreeType project / / license, LICENSE.TXT. By continuing to use, modify, or distribute / / this file you indicate that you have read the license and / / understand and accept it fully. / / / /************************************************************************/ /**********************************************************************/ / / / This file is used to define the FreeType module error codes. / / / / If the macro FT_CONFIG_OPTION_USE_MODULE_ERRORS in `ftoption.h' is / / set, the lower byte of an error value identifies the error code as / / usual. In addition, the higher byte identifies the module. For / / example, the error `FT_Err_Invalid_File_Format' has value 0x0003, the / / error `TT_Err_Invalid_File_Format' has value 0x1303, the error / / `T1_Err_Invalid_File_Format' has value 0x1403, etc. / / / / Note that `FT_Err_Ok', `TT_Err_Ok', etc. are always equal to zero, / / including the high byte. / / / / If FT_CONFIG_OPTION_USE_MODULE_ERRORS isn't set, the higher byte of / / an error value is set to zero. / / / / To hide the various `XXX_Err_' prefixes in the source code, FreeType / / provides some macros in `fttypes.h'. / / / / FT_ERR( err ) / / Add current error module prefix (as defined with the / / `FT_ERR_PREFIX' macro) to `err'. For example, in the BDF module / / the line / / / / error = FT_ERR( Invalid_Outline ); / / / / expands to / / / / error = BDF_Err_Invalid_Outline; / / / / For simplicity, you can always use `FT_Err_Ok' directly instead / / of `FT_ERR( Ok )'. / / / / FT_ERR_EQ( errcode, err ) / / FT_ERR_NEQ( errcode, err ) / / Compare error code `errcode' with the error `err' for equality / / and inequality, respectively. Example: / / / / if ( FT_ERR_EQ( error, Invalid_Outline ) ) / / ... / / / / Using this macro you don't have to think about error prefixes. / / Of course, if module errors are not active, the above example is / / the same as / / / / if ( error == FT_Err_Invalid_Outline ) / / ... / / / / FT_ERROR_BASE( errcode ) / / FT_ERROR_MODULE( errcode ) / / Get base error and module error code, respectively. / / / / / / It can also be used to create a module error message table easily / / with something like / / / / { / / #undef FTMODERR_H_ / / #define FT_MODERRDEF( e, v, s ) { FT_Mod_Err_ ## e, s }, / / #define FT_MODERR_START_LIST { / / #define FT_MODERR_END_LIST { 0, 0 } }; / / / / const struct / / { / / int mod_err_offset; / / const char* mod_err_msg / / } ft_mod_errors[] = / / / / #include FT_MODULE_ERRORS_H / / } / / / /**********************************************************************/ #ifndef FTMODERR_H_ #define FTMODERR_H_ /***************************************************************/ /***************************************************************/ /* */ /* SETUP MACROS */ /* */ /***************************************************************/ /****************************************************************/ #undef FT_NEED_EXTERN_C #ifndef FT_MODERRDEF #ifdef FT_CONFIG_OPTION_USE_MODULE_ERRORS #define FT_MODERRDEF( e, v, s ) FT_Mod_Err_ ## e = v, #else #define FT_MODERRDEF( e, v, s ) FT_Mod_Err_ ## e = 0, #endif #define FT_MODERR_START_LIST enum { #define FT_MODERR_END_LIST FT_Mod_Err_Max }; #ifdef __cplusplus #define FT_NEED_EXTERN_C extern "C" { #endif #endif / !FT_MODERRDEF / /****************************************************************/ /***************************************************************/ /* */ /* LIST MODULE ERROR BASES */ /* */ /***************************************************************/ /***************************************************************/ #ifdef FT_MODERR_START_LIST FT_MODERR_START_LIST #endif FT_MODERRDEF( Base, 0x000, "base module" ) FT_MODERRDEF( Autofit, 0x100, "autofitter module" ) FT_MODERRDEF( BDF, 0x200, "BDF module" ) FT_MODERRDEF( Bzip2, 0x300, "Bzip2 module" ) FT_MODERRDEF( Cache, 0x400, "cache module" ) FT_MODERRDEF( CFF, 0x500, "CFF module" ) FT_MODERRDEF( CID, 0x600, "CID module" ) FT_MODERRDEF( Gzip, 0x700, "Gzip module" ) FT_MODERRDEF( LZW, 0x800, "LZW module" ) FT_MODERRDEF( OTvalid, 0x900, "OpenType validation module" ) FT_MODERRDEF( PCF, 0xA00, "PCF module" ) FT_MODERRDEF( PFR, 0xB00, "PFR module" ) FT_MODERRDEF( PSaux, 0xC00, "PS auxiliary module" ) FT_MODERRDEF( PShinter, 0xD00, "PS hinter module" ) FT_MODERRDEF( PSnames, 0xE00, "PS names module" ) FT_MODERRDEF( Raster, 0xF00, "raster module" ) FT_MODERRDEF( SFNT, 0x1000, "SFNT module" ) FT_MODERRDEF( Smooth, 0x1100, "smooth raster module" ) FT_MODERRDEF( TrueType, 0x1200, "TrueType module" ) FT_MODERRDEF( Type1, 0x1300, "Type 1 module" ) FT_MODERRDEF( Type42, 0x1400, "Type 42 module" ) FT_MODERRDEF( Winfonts, 0x1500, "Windows FON/FNT module" ) FT_MODERRDEF( GXvalid, 0x1600, "GX validation module" ) #ifdef FT_MODERR_END_LIST FT_MODERR_END_LIST #endif /***************************************************************/ /***************************************************************/ /* */ /* CLEANUP */ /* */ /***************************************************************/ /****************************************************************/ #ifdef FT_NEED_EXTERN_C } #endif #undef FT_MODERR_START_LIST #undef FT_MODERR_END_LIST #undef FT_MODERRDEF #undef FT_NEED_EXTERN_C #endif / FTMODERR_H_ / / END */