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1 /***************************************************************************/ |
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2 /* */ |
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3 /* ftdebug.c */ |
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4 /* */ |
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5 /* Debugging and logging component (body). */ |
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6 /* */ |
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7 /* Copyright 1996-2001, 2002, 2004, 2005 by */ |
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8 /* David Turner, Robert Wilhelm, Werner Lemberg and Detlef Würkner. */ |
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9 /* */ |
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10 /* This file is part of the FreeType project, and may only be used, */ |
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11 /* modified, and distributed under the terms of the FreeType project */ |
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12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
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13 /* this file you indicate that you have read the license and */ |
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14 /* understand and accept it fully. */ |
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15 /* */ |
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16 /***************************************************************************/ |
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17 |
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18 |
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19 /*************************************************************************/ |
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20 /* */ |
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21 /* This component contains various macros and functions used to ease the */ |
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22 /* debugging of the FreeType engine. Its main purpose is in assertion */ |
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23 /* checking, tracing, and error detection. */ |
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24 /* */ |
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25 /* There are now three debugging modes: */ |
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26 /* */ |
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27 /* - trace mode */ |
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28 /* */ |
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29 /* Error and trace messages are sent to the log file (which can be the */ |
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30 /* standard error output). */ |
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31 /* */ |
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32 /* - error mode */ |
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33 /* */ |
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34 /* Only error messages are generated. */ |
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35 /* */ |
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36 /* - release mode: */ |
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37 /* */ |
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38 /* No error message is sent or generated. The code is free from any */ |
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39 /* debugging parts. */ |
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40 /* */ |
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41 /*************************************************************************/ |
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42 |
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43 |
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44 /* |
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45 * Based on the default ftdebug.c, |
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46 * replaced vprintf() with KVPrintF(), |
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47 * commented out exit(), |
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48 * replaced getenv() with GetVar(). |
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49 */ |
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50 |
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51 #include <exec/types.h> |
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52 #include <utility/tagitem.h> |
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53 #include <dos/exall.h> |
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54 #include <dos/var.h> |
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55 #define __NOLIBBASE__ |
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56 #define __NOLOBALIFACE__ |
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57 #define __USE_INLINE__ |
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58 #include <proto/dos.h> |
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59 #include <clib/debug_protos.h> |
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60 |
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61 #ifndef __amigaos4__ |
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62 extern struct Library *DOSBase; |
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63 #else |
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64 extern struct DOSIFace *IDOS; |
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65 #endif |
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66 |
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67 |
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68 #include <ft2build.h> |
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69 #include FT_FREETYPE_H |
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70 #include FT_INTERNAL_DEBUG_H |
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71 |
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72 |
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73 #if defined( FT_DEBUG_LEVEL_ERROR ) |
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74 |
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75 /* documentation is in ftdebug.h */ |
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76 |
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77 FT_BASE_DEF( void ) |
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78 FT_Message( const char* fmt, ... ) |
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79 { |
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80 va_list ap; |
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81 |
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82 |
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83 va_start( ap, fmt ); |
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84 /* vprintf( fmt, ap ); */ |
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85 KVPrintF( fmt, ap ); |
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86 va_end( ap ); |
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87 } |
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88 |
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89 |
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90 /* documentation is in ftdebug.h */ |
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91 |
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92 FT_BASE_DEF( void ) |
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93 FT_Panic( const char* fmt, ... ) |
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94 { |
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95 va_list ap; |
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96 |
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97 |
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98 va_start( ap, fmt ); |
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99 /* vprintf( fmt, ap ); */ |
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100 KVPrintF( fmt, ap ); |
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101 va_end( ap ); |
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102 |
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103 /* exit( EXIT_FAILURE ); */ |
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104 } |
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105 |
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106 #endif /* FT_DEBUG_LEVEL_ERROR */ |
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107 |
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108 |
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109 |
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110 #ifdef FT_DEBUG_LEVEL_TRACE |
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111 |
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112 /* array of trace levels, initialized to 0 */ |
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113 int ft_trace_levels[trace_count]; |
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114 |
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115 |
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116 /* define array of trace toggle names */ |
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117 #define FT_TRACE_DEF( x ) #x , |
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118 |
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119 static const char* ft_trace_toggles[trace_count + 1] = |
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120 { |
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121 #include FT_INTERNAL_TRACE_H |
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122 NULL |
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123 }; |
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124 |
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125 #undef FT_TRACE_DEF |
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126 |
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127 |
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128 /* documentation is in ftdebug.h */ |
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129 |
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130 FT_BASE_DEF( FT_Int ) |
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131 FT_Trace_Get_Count( void ) |
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132 { |
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133 return trace_count; |
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134 } |
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135 |
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136 |
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137 /* documentation is in ftdebug.h */ |
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138 |
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139 FT_BASE_DEF( const char * ) |
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140 FT_Trace_Get_Name( FT_Int idx ) |
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141 { |
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142 int max = FT_Trace_Get_Count(); |
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143 |
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144 |
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145 if ( idx < max ) |
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146 return ft_trace_toggles[idx]; |
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147 else |
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148 return NULL; |
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149 } |
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150 |
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151 |
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152 /*************************************************************************/ |
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153 /* */ |
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154 /* Initialize the tracing sub-system. This is done by retrieving the */ |
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155 /* value of the `FT2_DEBUG' environment variable. It must be a list of */ |
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156 /* toggles, separated by spaces, `;', or `,'. Example: */ |
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157 /* */ |
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158 /* export FT2_DEBUG="any:3 memory:7 stream:5" */ |
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159 /* */ |
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160 /* This requests that all levels be set to 3, except the trace level for */ |
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161 /* the memory and stream components which are set to 7 and 5, */ |
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162 /* respectively. */ |
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163 /* */ |
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164 /* See the file <include/freetype/internal/fttrace.h> for details of the */ |
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165 /* available toggle names. */ |
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166 /* */ |
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167 /* The level must be between 0 and 7; 0 means quiet (except for serious */ |
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168 /* runtime errors), and 7 means _very_ verbose. */ |
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169 /* */ |
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170 FT_BASE_DEF( void ) |
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171 ft_debug_init( void ) |
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172 { |
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173 /* const char* ft2_debug = getenv( "FT2_DEBUG" ); */ |
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174 char buf[256]; |
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175 const char* ft2_debug = &buf[0]; |
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176 |
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177 |
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178 /* if ( ft2_debug ) */ |
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179 if ( GetVar( "FT2_DEBUG", (STRPTR)ft2_debug, 256, LV_VAR ) > 0 ) |
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180 { |
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181 const char* p = ft2_debug; |
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182 const char* q; |
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183 |
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184 |
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185 for ( ; *p; p++ ) |
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186 { |
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187 /* skip leading whitespace and separators */ |
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188 if ( *p == ' ' || *p == '\t' || *p == ',' || *p == ';' || *p == '=' ) |
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189 continue; |
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190 |
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191 /* read toggle name, followed by ':' */ |
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192 q = p; |
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193 while ( *p && *p != ':' ) |
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194 p++; |
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195 |
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196 if ( *p == ':' && p > q ) |
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197 { |
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198 FT_Int n, i, len = (FT_Int)( p - q ); |
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199 FT_Int level = -1, found = -1; |
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200 |
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201 |
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202 for ( n = 0; n < trace_count; n++ ) |
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203 { |
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204 const char* toggle = ft_trace_toggles[n]; |
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205 |
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206 |
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207 for ( i = 0; i < len; i++ ) |
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208 { |
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209 if ( toggle[i] != q[i] ) |
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210 break; |
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211 } |
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212 |
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213 if ( i == len && toggle[i] == 0 ) |
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214 { |
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215 found = n; |
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216 break; |
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217 } |
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218 } |
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219 |
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220 /* read level */ |
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221 p++; |
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222 if ( *p ) |
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223 { |
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224 level = *p++ - '0'; |
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225 if ( level < 0 || level > 7 ) |
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226 level = -1; |
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227 } |
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228 |
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229 if ( found >= 0 && level >= 0 ) |
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230 { |
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231 if ( found == trace_any ) |
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232 { |
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233 /* special case for `any' */ |
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234 for ( n = 0; n < trace_count; n++ ) |
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235 ft_trace_levels[n] = level; |
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236 } |
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237 else |
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238 ft_trace_levels[found] = level; |
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239 } |
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240 } |
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241 } |
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242 } |
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243 } |
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244 |
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245 |
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246 #else /* !FT_DEBUG_LEVEL_TRACE */ |
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247 |
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248 |
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249 FT_BASE_DEF( void ) |
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250 ft_debug_init( void ) |
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251 { |
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252 /* nothing */ |
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253 } |
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254 |
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255 |
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256 FT_BASE_DEF( FT_Int ) |
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257 FT_Trace_Get_Count( void ) |
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258 { |
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259 return 0; |
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260 } |
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261 |
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262 |
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263 FT_BASE_DEF( const char * ) |
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264 FT_Trace_Get_Name( FT_Int idx ) |
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265 { |
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266 FT_UNUSED( idx ); |
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267 |
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268 return NULL; |
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269 } |
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270 |
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271 |
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272 #endif /* !FT_DEBUG_LEVEL_TRACE */ |
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273 |
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274 /* |
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275 Local Variables: |
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276 coding: latin-1 |
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277 End: |
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278 */ |
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279 /* END */ |