David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1 | /***************************************************************************/ |
| 2 | /* */ |
| 3 | /* ftdebug.c */ |
| 4 | /* */ |
| 5 | /* Debugging and logging component (body). */ |
| 6 | /* */ |
Werner Lemberg | 415235d | 2001-06-28 17:49:10 +0000 | [diff] [blame] | 7 | /* Copyright 1996-2001 by */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 8 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
| 9 | /* */ |
Werner Lemberg | 4e6dd85 | 2000-06-05 05:26:15 +0000 | [diff] [blame] | 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 */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 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 | |
Werner Lemberg | 9a754ce | 2000-06-02 21:31:32 +0000 | [diff] [blame] | 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 | |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 43 | |
| 44 | #include <ft2build.h> |
| 45 | #include FT_INTERNAL_DEBUG_H |
| 46 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 47 | |
David Turner | 222cec8 | 2002-02-21 11:48:48 +0000 | [diff] [blame^] | 48 | #if defined( FT_DEBUG_LEVEL_ERROR ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 49 | |
| 50 | |
| 51 | #include <stdarg.h> |
| 52 | #include <stdlib.h> |
| 53 | #include <string.h> |
| 54 | |
| 55 | |
Werner Lemberg | f814d0f | 2001-06-27 16:18:10 +0000 | [diff] [blame] | 56 | FT_EXPORT_DEF( void ) |
| 57 | FT_Message( const char* fmt, ... ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 58 | { |
| 59 | va_list ap; |
| 60 | |
| 61 | |
| 62 | va_start( ap, fmt ); |
| 63 | vprintf( fmt, ap ); |
| 64 | va_end( ap ); |
| 65 | } |
| 66 | |
| 67 | |
Werner Lemberg | f814d0f | 2001-06-27 16:18:10 +0000 | [diff] [blame] | 68 | FT_EXPORT_DEF( void ) |
| 69 | FT_Panic( const char* fmt, ... ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 70 | { |
| 71 | va_list ap; |
| 72 | |
| 73 | |
| 74 | va_start( ap, fmt ); |
| 75 | vprintf( fmt, ap ); |
| 76 | va_end( ap ); |
| 77 | |
| 78 | exit( EXIT_FAILURE ); |
| 79 | } |
| 80 | |
David Turner | 222cec8 | 2002-02-21 11:48:48 +0000 | [diff] [blame^] | 81 | #endif /* FT_DEBUG_LEVEL_ERROR */ |
| 82 | |
| 83 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 84 | |
| 85 | #ifdef FT_DEBUG_LEVEL_TRACE |
| 86 | |
David Turner | 222cec8 | 2002-02-21 11:48:48 +0000 | [diff] [blame^] | 87 | /* array of trace levels, initialized to 0 */ |
| 88 | int ft_trace_levels[ trace_count ]; |
| 89 | |
| 90 | /* define array of trace toggle names */ |
| 91 | #define FT_TRACE_DEF(x) #x , |
| 92 | |
| 93 | static const char* ft_trace_toggles[ trace_count+1 ] = |
| 94 | { |
| 95 | #include FT_INTERNAL_TRACE_H |
| 96 | NULL |
| 97 | }; |
| 98 | |
| 99 | #undef FT_TRACE_DEF |
| 100 | |
| 101 | |
| 102 | |
| 103 | /************************************************************************ |
| 104 | * |
| 105 | * initialize the tracing sub-system, this is done by retrieving the |
| 106 | * value of the "FT2_DEBUG" environment variable. It must be a list of |
| 107 | * toggles, separated by spaces, ';' or ':' for example: |
| 108 | * |
| 109 | * "any=3 memory=6 stream=5" |
| 110 | * |
| 111 | * will request that all levels be set to 3, except the trace level for |
| 112 | * the memory and stream components which are respectively set to 6 and 5 |
| 113 | * |
| 114 | * see the file <freetype/internal/fttrace.h> for details of the available |
| 115 | * toggle names. |
| 116 | * |
| 117 | * the level is between 0 and 6, where 0 is quiet (except in important |
| 118 | * runtime errors), and 6 is _very_ verbose |
| 119 | */ |
| 120 | |
| 121 | FT_BASE_DEF( void ) |
| 122 | ft_debug_init( void ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 123 | { |
David Turner | 222cec8 | 2002-02-21 11:48:48 +0000 | [diff] [blame^] | 124 | const char* ft2_debug = getenv( "FT2_DEBUG" ); |
| 125 | |
| 126 | if ( ft2_debug ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 127 | { |
David Turner | 222cec8 | 2002-02-21 11:48:48 +0000 | [diff] [blame^] | 128 | const char* p = ft2_debug; |
| 129 | const char* q; |
| 130 | |
| 131 | for ( ; *p; p++ ) |
| 132 | { |
| 133 | /* skip leading whitespace and separators */ |
| 134 | if ( *p == ' ' || *p == '\t' || *p == ':' || *p == ';' || *p == '=' ) |
| 135 | continue; |
| 136 | |
| 137 | /* read toggle name, followed by '=' */ |
| 138 | q = p; |
| 139 | while ( *p && *p != '=' ) |
| 140 | p++; |
| 141 | |
| 142 | if ( *p == '=' && p > q ) |
| 143 | { |
| 144 | int n, i, len = p - q; |
| 145 | int level = -1, found = -1; |
| 146 | |
| 147 | for ( n = 0; n < trace_count; n++ ) |
| 148 | { |
| 149 | const char* toggle = ft_trace_toggles[n]; |
| 150 | |
| 151 | for ( i = 0; i < len; i++ ) |
| 152 | { |
| 153 | if ( toggle[i] != q[i] ) |
| 154 | break; |
| 155 | } |
| 156 | |
| 157 | if ( i == len && toggle[i] == 0 ) |
| 158 | { |
| 159 | found = n; |
| 160 | break; |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | /* read level */ |
| 165 | p++; |
| 166 | if ( *p ) |
| 167 | { |
| 168 | level = *p++ - '0'; |
| 169 | if ( level < 0 || level > 6 ) |
| 170 | level = -1; |
| 171 | } |
| 172 | |
| 173 | if ( found >= 0 && level >= 0 ) |
| 174 | { |
| 175 | if ( found == trace_any ) |
| 176 | { |
| 177 | /* special case for "any" */ |
| 178 | for ( n = 0; n < trace_count; n++ ) |
| 179 | ft_trace_levels[n] = level; |
| 180 | } |
| 181 | else |
| 182 | ft_trace_levels[ found ] = level; |
| 183 | } |
| 184 | } |
| 185 | } |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 186 | } |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 187 | } |
| 188 | |
David Turner | 222cec8 | 2002-02-21 11:48:48 +0000 | [diff] [blame^] | 189 | #else /* !FT_DEBUG_LEVEL_TRACE */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 190 | |
David Turner | 222cec8 | 2002-02-21 11:48:48 +0000 | [diff] [blame^] | 191 | FT_BASE_DEF( void ) |
| 192 | ft_debut_init( void ) |
| 193 | { |
| 194 | /* nothing */ |
| 195 | } |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 196 | |
David Turner | 222cec8 | 2002-02-21 11:48:48 +0000 | [diff] [blame^] | 197 | #endif /* !FT_DEBUG_LEVEL_TRACE */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 198 | |
Werner Lemberg | 63408a1 | 2000-12-13 23:44:37 +0000 | [diff] [blame] | 199 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 200 | /* END */ |