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Diffstat (limited to 'builds/win32/ftdebug.c')
| -rw-r--r-- | builds/win32/ftdebug.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/builds/win32/ftdebug.c b/builds/win32/ftdebug.c new file mode 100644 index 0000000..886144f --- /dev/null +++ b/builds/win32/ftdebug.c @@ -0,0 +1,213 @@ +/***************************************************************************/ +/* */ +/* ftdebug.c */ +/* */ +/* Debugging and logging component for Win32 (body). */ +/* */ +/* Copyright 1996-2001, 2002, 2005 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 component contains various macros and functions used to ease the */ + /* debugging of the FreeType engine. Its main purpose is in assertion */ + /* checking, tracing, and error detection. */ + /* */ + /* There are now three debugging modes: */ + /* */ + /* - trace mode */ + /* */ + /* Error and trace messages are sent to the log file (which can be the */ + /* standard error output). */ + /* */ + /* - error mode */ + /* */ + /* Only error messages are generated. */ + /* */ + /* - release mode: */ + /* */ + /* No error message is sent or generated. The code is free from any */ + /* debugging parts. */ + /* */ + /*************************************************************************/ + + +#include <ft2build.h> +#include FT_INTERNAL_DEBUG_H + + +#ifdef FT_DEBUG_LEVEL_ERROR + + +# include <stdarg.h> +# include <stdlib.h> +# include <string.h> + +# include <windows.h> + + + FT_BASE_DEF( void ) + FT_Message( const char* fmt, ... ) + { + static char buf[8192]; + va_list ap; + + + va_start( ap, fmt ); + vprintf( fmt, ap ); + /* send the string to the debugger as well */ + vsprintf( buf, fmt, ap ); + OutputDebugStringA( buf ); + va_end( ap ); + } + + + FT_BASE_DEF( void ) + FT_Panic( const char* fmt, ... ) + { + static char buf[8192]; + va_list ap; + + + va_start( ap, fmt ); + vsprintf( buf, fmt, ap ); + OutputDebugStringA( buf ); + va_end( ap ); + + exit( EXIT_FAILURE ); + } + + +# ifdef FT_DEBUG_LEVEL_TRACE + + + /* array of trace levels, initialized to 0 */ + int ft_trace_levels[trace_count]; + + /* define array of trace toggle names */ +# define FT_TRACE_DEF( x ) #x , + + static const char* ft_trace_toggles[trace_count + 1] = + { +# include FT_INTERNAL_TRACE_H + NULL + }; + +# undef FT_TRACE_DEF + + + /*************************************************************************/ + /* */ + /* Initialize the tracing sub-system. This is done by retrieving the */ + /* value of the "FT2_DEBUG" environment variable. It must be a list of */ + /* toggles, separated by spaces, `;' or `,'. Example: */ + /* */ + /* "any:3 memory:6 stream:5" */ + /* */ + /* This will request that all levels be set to 3, except the trace level */ + /* for the memory and stream components which are set to 6 and 5, */ + /* respectively. */ + /* */ + /* See the file <freetype/internal/fttrace.h> for details of the */ + /* available toggle names. */ + /* */ + /* The level must be between 0 and 6; 0 means quiet (except for serious */ + /* runtime errors), and 6 means _very_ verbose. */ + /* */ + FT_BASE_DEF( void ) + ft_debug_init( void ) + { + const char* ft2_debug = getenv( "FT2_DEBUG" ); + + + if ( ft2_debug ) + { + const char* p = ft2_debug; + const char* q; + + + for ( ; *p; p++ ) + { + /* skip leading whitespace and separators */ + if ( *p == ' ' || *p == '\t' || *p == ',' || *p == ';' || *p == '=' ) + continue; + + /* read toggle name, followed by ':' */ + q = p; + while ( *p && *p != ':' ) + p++; + + if ( *p == ':' && p > q ) + { + int n, i, len = p - q; + int level = -1, found = -1; + + + for ( n = 0; n < trace_count; n++ ) + { + const char* toggle = ft_trace_toggles[n]; + + + for ( i = 0; i < len; i++ ) + { + if ( toggle[i] != q[i] ) + break; + } + + if ( i == len && toggle[i] == 0 ) + { + found = n; + break; + } + } + + /* read level */ + p++; + if ( *p ) + { + level = *p++ - '0'; + if ( level < 0 || level > 7 ) + level = -1; + } + + if ( found >= 0 && level >= 0 ) + { + if ( found == trace_any ) + { + /* special case for "any" */ + for ( n = 0; n < trace_count; n++ ) + ft_trace_levels[n] = level; + } + else + ft_trace_levels[found] = level; + } + } + } + } + } + + +# else /* !FT_DEBUG_LEVEL_TRACE */ + + + FT_BASE_DEF( void ) + ft_debug_init( void ) + { + /* nothing */ + } + + +# endif /* !FT_DEBUG_LEVEL_TRACE */ + +#endif /* FT_DEBUG_LEVEL_ERROR */ + +/* END */ |