1 /***************************************************************************/ 2 /* */ 3 /* ftdebug.c */ 4 /* */ 5 /* Debugging and logging component for WinCE (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 /* */ 21 /* This component contains various macros and functions used to ease the */ 22 /* debugging of the FreeType engine. Its main purpose is in assertion */ 23 /* checking, tracing, and error detection. */ 24 /* */ 25 /* There are now three debugging modes: */ 26 /* */ 27 /* - trace mode */ 28 /* */ 29 /* Error and trace messages are sent to the log file (which can be the */ 30 /* standard error output). */ 31 /* */ 32 /* - error mode */ 33 /* */ 34 /* Only error messages are generated. */ 35 /* */ 36 /* - release mode: */ 37 /* */ 38 /* No error message is sent or generated. The code is free from any */ 39 /* debugging parts. */ 40 /* */ 41 /*************************************************************************/ 42 43 44 #include <ft2build.h> 45 #include FT_INTERNAL_DEBUG_H 46 47 48 #ifdef FT_DEBUG_LEVEL_ERROR 49 50 51 #include <stdarg.h> 52 #include <stdlib.h> 53 #include <string.h> 54 55 #include <windows.h> 56 57 58 void 59 OutputDebugStringEx( const char* str ) 60 { 61 static WCHAR buf[8192]; 62 63 64 int sz = MultiByteToWideChar( CP_ACP, 0, str, -1, buf, 65 sizeof ( buf ) / sizeof ( *buf ) ); 66 if ( !sz ) 67 lstrcpyW( buf, L"OutputDebugStringEx: MultiByteToWideChar failed" ); 68 69 OutputDebugStringW( buf ); 70 } 71 72 73 FT_BASE_DEF( void ) 74 FT_Message( const char* fmt, 75 ... ) 76 { 77 static char buf[8192]; 78 va_list ap; 79 80 81 va_start( ap, fmt ); 82 vfprintf( stderr, fmt, ap ); 83 /* send the string to the debugger as well */ 84 vsprintf( buf, fmt, ap ); 85 OutputDebugStringEx( buf ); 86 va_end( ap ); 87 } 88 89 90 FT_BASE_DEF( void ) 91 FT_Panic( const char* fmt, 92 ... ) 93 { 94 static char buf[8192]; 95 va_list ap; 96 97 98 va_start( ap, fmt ); 99 vsprintf( buf, fmt, ap ); 100 OutputDebugStringEx( buf ); 101 va_end( ap ); 102 103 exit( EXIT_FAILURE ); 104 } 105 106 107 /* documentation is in ftdebug.h */ 108 109 FT_BASE_DEF( int ) 110 FT_Throw( FT_Error error, 111 int line, 112 const char* file ) 113 { 114 FT_UNUSED( error ); 115 FT_UNUSED( line ); 116 FT_UNUSED( file ); 117 118 return 0; 119 } 120 121 #ifdef FT_DEBUG_LEVEL_TRACE 122 123 124 /* array of trace levels, initialized to 0 */ 125 int ft_trace_levels[trace_count]; 126 127 /* define array of trace toggle names */ 128 #define FT_TRACE_DEF( x ) #x , 129 130 static const char* ft_trace_toggles[trace_count + 1] = 131 { 132 #include FT_INTERNAL_TRACE_H 133 NULL 134 }; 135 136 #undef FT_TRACE_DEF 137 138 139 /*************************************************************************/ 140 /* */ 141 /* Initialize the tracing sub-system. This is done by retrieving the */ 142 /* value of the "FT2_DEBUG" environment variable. It must be a list of */ 143 /* toggles, separated by spaces, `;' or `,'. Example: */ 144 /* */ 145 /* "any:3 memory:6 stream:5" */ 146 /* */ 147 /* This will request that all levels be set to 3, except the trace level */ 148 /* for the memory and stream components which are set to 6 and 5, */ 149 /* respectively. */ 150 /* */ 151 /* See the file `include/freetype/internal/fttrace.h' for details of the */ 152 /* available toggle names. */ 153 /* */ 154 /* The level must be between 0 and 6; 0 means quiet (except for serious */ 155 /* runtime errors), and 6 means _very_ verbose. */ 156 /* */ 157 FT_BASE_DEF( void ) 158 ft_debug_init( void ) 159 { 160 /* Windows Mobile doesn't have environment API: */ 161 /* GetEnvironmentStrings, GetEnvironmentVariable, getenv. */ 162 /* */ 163 /* FIXME!!! How to set debug mode? */ 164 165 /* const char* ft2_debug = getenv( "FT2_DEBUG" ); */ 166 167 const char* ft2_debug = 0; 168 169 170 if ( ft2_debug ) 171 { 172 const char* p = ft2_debug; 173 const char* q; 174 175 176 for ( ; *p; p++ ) 177 { 178 /* skip leading whitespace and separators */ 179 if ( *p == ' ' || *p == '\t' || *p == ',' || *p == ';' || *p == '=' ) 180 continue; 181 182 /* read toggle name, followed by ':' */ 183 q = p; 184 while ( *p && *p != ':' ) 185 p++; 186 187 if ( !*p ) 188 break; 189 190 if ( *p == ':' && p > q ) 191 { 192 int n, i, len = (int)( p - q ); 193 int level = -1, found = -1; 194 195 196 for ( n = 0; n < trace_count; n++ ) 197 { 198 const char* toggle = ft_trace_toggles[n]; 199 200 201 for ( i = 0; i < len; i++ ) 202 { 203 if ( toggle[i] != q[i] ) 204 break; 205 } 206 207 if ( i == len && toggle[i] == 0 ) 208 { 209 found = n; 210 break; 211 } 212 } 213 214 /* read level */ 215 p++; 216 if ( *p ) 217 { 218 level = *p - '0'; 219 if ( level < 0 || level > 7 ) 220 level = -1; 221 } 222 223 if ( found >= 0 && level >= 0 ) 224 { 225 if ( found == trace_any ) 226 { 227 /* special case for "any" */ 228 for ( n = 0; n < trace_count; n++ ) 229 ft_trace_levels[n] = level; 230 } 231 else 232 ft_trace_levels[found] = level; 233 } 234 } 235 } 236 } 237 } 238 239 240 #else /* !FT_DEBUG_LEVEL_TRACE */ 241 242 243 FT_BASE_DEF( void ) 244 ft_debug_init( void ) 245 { 246 /* nothing */ 247 } 248 249 250 #endif /* !FT_DEBUG_LEVEL_TRACE */ 251 252 #endif /* FT_DEBUG_LEVEL_ERROR */ 253 254 255 /* END */ 256
