355 lines
7.3 KiB
C
355 lines
7.3 KiB
C
/****************************************************************************
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*
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* ftdebug.c
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*
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* Debugging and logging component for WinCE (body).
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*
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* Copyright 1996-2018 by
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* David Turner, Robert Wilhelm, and Werner Lemberg.
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*
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* This file is part of the FreeType project, and may only be used,
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* modified, and distributed under the terms of the FreeType project
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* license, LICENSE.TXT. By continuing to use, modify, or distribute
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* this file you indicate that you have read the license and
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* understand and accept it fully.
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*
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*/
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/**************************************************************************
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*
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* This component contains various macros and functions used to ease the
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* debugging of the FreeType engine. Its main purpose is in assertion
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* checking, tracing, and error detection.
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*
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* There are now three debugging modes:
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*
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* - trace mode
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*
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* Error and trace messages are sent to the log file (which can be the
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* standard error output).
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*
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* - error mode
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*
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* Only error messages are generated.
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*
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* - release mode:
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*
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* No error message is sent or generated. The code is free from any
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* debugging parts.
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*
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*/
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include FT_INTERNAL_DEBUG_H
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#ifdef FT_DEBUG_LEVEL_ERROR
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <windows.h>
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static void
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OutputDebugStringEx( const char* str )
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{
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static WCHAR buf[8192];
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int sz = MultiByteToWideChar( CP_ACP, 0, str, -1, buf,
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sizeof ( buf ) / sizeof ( *buf ) );
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if ( !sz )
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lstrcpyW( buf, L"OutputDebugStringEx: MultiByteToWideChar failed" );
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OutputDebugStringW( buf );
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}
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/* documentation is in ftdebug.h */
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FT_BASE_DEF( void )
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FT_Message( const char* fmt,
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... )
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{
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static char buf[8192];
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va_list ap;
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va_start( ap, fmt );
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vfprintf( stderr, fmt, ap );
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/* send the string to the debugger as well */
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vsprintf( buf, fmt, ap );
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OutputDebugStringEx( buf );
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va_end( ap );
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}
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/* documentation is in ftdebug.h */
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FT_BASE_DEF( void )
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FT_Panic( const char* fmt,
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... )
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{
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static char buf[8192];
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va_list ap;
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va_start( ap, fmt );
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vsprintf( buf, fmt, ap );
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OutputDebugStringEx( buf );
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va_end( ap );
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exit( EXIT_FAILURE );
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}
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/* documentation is in ftdebug.h */
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FT_BASE_DEF( int )
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FT_Throw( FT_Error error,
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int line,
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const char* file )
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{
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#if 0
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/* activating the code in this block makes FreeType very chatty */
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fprintf( stderr,
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"%s:%d: error 0x%02x: %s\n",
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file,
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line,
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error,
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FT_Error_String( error ) );
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#else
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FT_UNUSED( error );
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FT_UNUSED( line );
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FT_UNUSED( file );
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#endif
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return 0;
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}
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#endif /* FT_DEBUG_LEVEL_ERROR */
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#ifdef FT_DEBUG_LEVEL_TRACE
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/* array of trace levels, initialized to 0; */
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/* this gets adjusted at run-time */
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static int ft_trace_levels_enabled[trace_count];
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/* array of trace levels, always initialized to 0 */
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static int ft_trace_levels_disabled[trace_count];
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/* a pointer to either `ft_trace_levels_enabled' */
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/* or `ft_trace_levels_disabled' */
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int* ft_trace_levels;
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/* define array of trace toggle names */
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#define FT_TRACE_DEF( x ) #x ,
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static const char* ft_trace_toggles[trace_count + 1] =
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{
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#include FT_INTERNAL_TRACE_H
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NULL
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};
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#undef FT_TRACE_DEF
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/* documentation is in ftdebug.h */
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FT_BASE_DEF( FT_Int )
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FT_Trace_Get_Count( void )
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{
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return trace_count;
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}
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/* documentation is in ftdebug.h */
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FT_BASE_DEF( const char * )
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FT_Trace_Get_Name( FT_Int idx )
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{
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int max = FT_Trace_Get_Count();
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if ( idx < max )
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return ft_trace_toggles[idx];
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else
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return NULL;
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}
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/* documentation is in ftdebug.h */
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FT_BASE_DEF( void )
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FT_Trace_Disable( void )
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{
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ft_trace_levels = ft_trace_levels_disabled;
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}
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/* documentation is in ftdebug.h */
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FT_BASE_DEF( void )
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FT_Trace_Enable( void )
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{
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ft_trace_levels = ft_trace_levels_enabled;
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}
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/**************************************************************************
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*
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* Initialize the tracing sub-system. This is done by retrieving the
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* value of the `FT2_DEBUG' environment variable. It must be a list of
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* toggles, separated by spaces, `;', or `,'. Example:
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*
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* export FT2_DEBUG="any:3 memory:7 stream:5"
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*
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* This requests that all levels be set to 3, except the trace level for
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* the memory and stream components which are set to 7 and 5,
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* respectively.
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*
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* See the file `include/freetype/internal/fttrace.h' for details of
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* the available toggle names.
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*
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* The level must be between 0 and 7; 0 means quiet (except for serious
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* runtime errors), and 7 means _very_ verbose.
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*/
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FT_BASE_DEF( void )
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ft_debug_init( void )
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{
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/* Windows Mobile doesn't have environment API: */
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/* GetEnvironmentStrings, GetEnvironmentVariable, getenv. */
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/* */
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/* FIXME!!! How to set debug mode? */
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/* const char* ft2_debug = getenv( "FT2_DEBUG" ); */
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const char* ft2_debug = 0;
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if ( ft2_debug )
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{
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const char* p = ft2_debug;
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const char* q;
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for ( ; *p; p++ )
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{
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/* skip leading whitespace and separators */
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if ( *p == ' ' || *p == '\t' || *p == ',' || *p == ';' || *p == '=' )
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continue;
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/* read toggle name, followed by ':' */
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q = p;
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while ( *p && *p != ':' )
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p++;
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if ( !*p )
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break;
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if ( *p == ':' && p > q )
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{
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FT_Int n, i, len = (FT_Int)( p - q );
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FT_Int level = -1, found = -1;
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for ( n = 0; n < trace_count; n++ )
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{
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const char* toggle = ft_trace_toggles[n];
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for ( i = 0; i < len; i++ )
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{
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if ( toggle[i] != q[i] )
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break;
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}
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if ( i == len && toggle[i] == 0 )
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{
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found = n;
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break;
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}
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}
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/* read level */
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p++;
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if ( *p )
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{
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level = *p - '0';
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if ( level < 0 || level > 7 )
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level = -1;
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}
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if ( found >= 0 && level >= 0 )
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{
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if ( found == trace_any )
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{
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/* special case for `any' */
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for ( n = 0; n < trace_count; n++ )
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ft_trace_levels_enabled[n] = level;
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}
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else
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ft_trace_levels_enabled[found] = level;
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}
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}
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}
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}
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ft_trace_levels = ft_trace_levels_enabled;
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}
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#else /* !FT_DEBUG_LEVEL_TRACE */
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FT_BASE_DEF( void )
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ft_debug_init( void )
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{
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/* nothing */
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}
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FT_BASE_DEF( FT_Int )
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FT_Trace_Get_Count( void )
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{
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return 0;
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}
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FT_BASE_DEF( const char * )
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FT_Trace_Get_Name( FT_Int idx )
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{
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FT_UNUSED( idx );
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return NULL;
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}
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FT_BASE_DEF( void )
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FT_Trace_Disable( void )
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{
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/* nothing */
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}
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/* documentation is in ftdebug.h */
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FT_BASE_DEF( void )
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FT_Trace_Enable( void )
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{
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/* nothing */
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}
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#endif /* !FT_DEBUG_LEVEL_TRACE */
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/* END */
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