builds/wince/ftdebug.c - third_party/freetype2 - Git at Google

 /****************************************************************************
  *
  * ftdebug.c
  *
  *   Debugging and logging component for WinCE (body).
  *
  * Copyright (C) 1996-2022 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 <freetype/freetype.h>
 #include <freetype/internal/ftdebug.h>


 #ifdef FT_DEBUG_LEVEL_ERROR

 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>

 #include <windows.h>


   static void
   OutputDebugStringEx( const char*  str )
   {
     static WCHAR  buf[8192];

     int  sz = MultiByteToWideChar( CP_ACP, 0, str, -1, buf,
                                    sizeof ( buf ) / sizeof ( *buf ) );


     if ( !sz )
       lstrcpyW( buf, L"OutputDebugStringEx: MultiByteToWideChar failed" );

     OutputDebugStringW( buf );
   }


   /* documentation is in ftdebug.h */

   FT_BASE_DEF( void )
   FT_Message( const char*  fmt,
               ... )
   {
     static char  buf[8192];
     va_list      ap;


     va_start( ap, fmt );
     vfprintf( stderr, fmt, ap );
     /* send the string to the debugger as well */
     vsprintf( buf, fmt, ap );
     OutputDebugStringEx( buf );
     va_end( ap );
   }


   /* documentation is in ftdebug.h */

   FT_BASE_DEF( void )
   FT_Panic( const char*  fmt,
             ... )
   {
     static char  buf[8192];
     va_list      ap;


     va_start( ap, fmt );
     vsprintf( buf, fmt, ap );
     OutputDebugStringEx( buf );
     va_end( ap );

     exit( EXIT_FAILURE );
   }


   /* documentation is in ftdebug.h */

   FT_BASE_DEF( int )
   FT_Throw( FT_Error     error,
             int          line,
             const char*  file )
   {
 #if 0
     /* activating the code in this block makes FreeType very chatty */
     fprintf( stderr,
              "%s:%d: error 0x%02x: %s\n",
              file,
              line,
              error,
              FT_Error_String( error ) );
 #else
     FT_UNUSED( error );
     FT_UNUSED( line );
     FT_UNUSED( file );
 #endif

     return 0;
   }

 #endif /* FT_DEBUG_LEVEL_ERROR */


 #ifdef FT_DEBUG_LEVEL_TRACE

   /* array of trace levels, initialized to 0; */
   /* this gets adjusted at run-time           */
   static int  ft_trace_levels_enabled[trace_count];

   /* array of trace levels, always initialized to 0 */
   static int  ft_trace_levels_disabled[trace_count];

   /* a pointer to either `ft_trace_levels_enabled' */
   /* or `ft_trace_levels_disabled'                 */
   int*  ft_trace_levels;

   /* define array of trace toggle names */
 #define FT_TRACE_DEF( x )  #x ,

   static const char*  ft_trace_toggles[trace_count + 1] =
   {
 #include <freetype/internal/fttrace.h>
     NULL
   };

 #undef FT_TRACE_DEF


   /* documentation is in ftdebug.h */

   FT_BASE_DEF( FT_Int )
   FT_Trace_Get_Count( void )
   {
     return trace_count;
   }


   /* documentation is in ftdebug.h */

   FT_BASE_DEF( const char * )
   FT_Trace_Get_Name( FT_Int  idx )
   {
     int  max = FT_Trace_Get_Count();


     if ( idx < max )
       return ft_trace_toggles[idx];
     else
       return NULL;
   }


   /* documentation is in ftdebug.h */

   FT_BASE_DEF( void )
   FT_Trace_Disable( void )
   {
     ft_trace_levels = ft_trace_levels_disabled;
   }


   /* documentation is in ftdebug.h */

   FT_BASE_DEF( void )
   FT_Trace_Enable( void )
   {
     ft_trace_levels = ft_trace_levels_enabled;
   }


   /**************************************************************************
    *
    * 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:
    *
    *   export FT2_DEBUG="any:3 memory:7 stream:5"
    *
    * This requests that all levels be set to 3, except the trace level for
    * the memory and stream components which are set to 7 and 5,
    * respectively.
    *
    * See the file `include/freetype/internal/fttrace.h' for details of
    * the available toggle names.
    *
    * The level must be between 0 and 7; 0 means quiet (except for serious
    * runtime errors), and 7 means _very_ verbose.
    */
   FT_BASE_DEF( void )
   ft_debug_init( void )
   {
     /* Windows Mobile doesn't have environment API:           */
     /* GetEnvironmentStrings, GetEnvironmentVariable, getenv. */
     /*                                                        */
     /* FIXME!!! How to set debug mode?                        */

     /* const char*  ft2_debug = getenv( "FT2_DEBUG" ); */

     const char*  ft2_debug = NULL;


     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 )
           break;

         if ( *p == ':' && p > q )
         {
           FT_Int  n, i, len = (FT_Int)( p - q );
           FT_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_enabled[n] = level;
             }
             else
               ft_trace_levels_enabled[found] = level;
           }
         }
       }
     }

     ft_trace_levels = ft_trace_levels_enabled;
   }


 #else  /* !FT_DEBUG_LEVEL_TRACE */


   FT_BASE_DEF( void )
   ft_debug_init( void )
   {
     /* nothing */
   }


   FT_BASE_DEF( FT_Int )
   FT_Trace_Get_Count( void )
   {
     return 0;
   }


   FT_BASE_DEF( const char * )
   FT_Trace_Get_Name( FT_Int  idx )
   {
     FT_UNUSED( idx );

     return NULL;
   }


   FT_BASE_DEF( void )
   FT_Trace_Disable( void )
   {
     /* nothing */
   }


   /* documentation is in ftdebug.h */

   FT_BASE_DEF( void )
   FT_Trace_Enable( void )
   {
     /* nothing */
   }


 #endif /* !FT_DEBUG_LEVEL_TRACE */


 /* END */
	/****************************************************************************
	*
	* ftdebug.c
	*
	* Debugging and logging component for WinCE (body).
	*
	* Copyright (C) 1996-2022 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 <freetype/freetype.h>
	#include <freetype/internal/ftdebug.h>


	#ifdef FT_DEBUG_LEVEL_ERROR

	#include <stdarg.h>
	#include <stdlib.h>
	#include <string.h>

	#include <windows.h>


	static void
	OutputDebugStringEx( const char* str )
	{
	static WCHAR buf[8192];

	int sz = MultiByteToWideChar( CP_ACP, 0, str, -1, buf,
	sizeof ( buf ) / sizeof ( *buf ) );


	if ( !sz )
	lstrcpyW( buf, L"OutputDebugStringEx: MultiByteToWideChar failed" );

	OutputDebugStringW( buf );
	}


	/* documentation is in ftdebug.h */

	FT_BASE_DEF( void )
	FT_Message( const char* fmt,
	... )
	{
	static char buf[8192];
	va_list ap;


	va_start( ap, fmt );
	vfprintf( stderr, fmt, ap );
	/* send the string to the debugger as well */
	vsprintf( buf, fmt, ap );
	OutputDebugStringEx( buf );
	va_end( ap );
	}


	/* documentation is in ftdebug.h */

	FT_BASE_DEF( void )
	FT_Panic( const char* fmt,
	... )
	{
	static char buf[8192];
	va_list ap;


	va_start( ap, fmt );
	vsprintf( buf, fmt, ap );
	OutputDebugStringEx( buf );
	va_end( ap );

	exit( EXIT_FAILURE );
	}


	/* documentation is in ftdebug.h */

	FT_BASE_DEF( int )
	FT_Throw( FT_Error error,
	int line,
	const char* file )
	{
	#if 0
	/* activating the code in this block makes FreeType very chatty */
	fprintf( stderr,
	"%s:%d: error 0x%02x: %s\n",
	file,
	line,
	error,
	FT_Error_String( error ) );
	#else
	FT_UNUSED( error );
	FT_UNUSED( line );
	FT_UNUSED( file );
	#endif

	return 0;
	}

	#endif /* FT_DEBUG_LEVEL_ERROR */


	#ifdef FT_DEBUG_LEVEL_TRACE

	/* array of trace levels, initialized to 0; */
	/* this gets adjusted at run-time */
	static int ft_trace_levels_enabled[trace_count];

	/* array of trace levels, always initialized to 0 */
	static int ft_trace_levels_disabled[trace_count];

	/* a pointer to either `ft_trace_levels_enabled' */
	/* or `ft_trace_levels_disabled' */
	int* ft_trace_levels;

	/* define array of trace toggle names */
	#define FT_TRACE_DEF( x ) #x ,

	static const char* ft_trace_toggles[trace_count + 1] =
	{
	#include <freetype/internal/fttrace.h>
	NULL
	};

	#undef FT_TRACE_DEF


	/* documentation is in ftdebug.h */

	FT_BASE_DEF( FT_Int )
	FT_Trace_Get_Count( void )
	{
	return trace_count;
	}


	/* documentation is in ftdebug.h */

	FT_BASE_DEF( const char * )
	FT_Trace_Get_Name( FT_Int idx )
	{
	int max = FT_Trace_Get_Count();


	if ( idx < max )
	return ft_trace_toggles[idx];
	else
	return NULL;
	}


	/* documentation is in ftdebug.h */

	FT_BASE_DEF( void )
	FT_Trace_Disable( void )
	{
	ft_trace_levels = ft_trace_levels_disabled;
	}


	/* documentation is in ftdebug.h */

	FT_BASE_DEF( void )
	FT_Trace_Enable( void )
	{
	ft_trace_levels = ft_trace_levels_enabled;
	}


	/**************************************************************************
	*
	* 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:
	*
	* export FT2_DEBUG="any:3 memory:7 stream:5"
	*
	* This requests that all levels be set to 3, except the trace level for
	* the memory and stream components which are set to 7 and 5,
	* respectively.
	*
	* See the file `include/freetype/internal/fttrace.h' for details of
	* the available toggle names.
	*
	* The level must be between 0 and 7; 0 means quiet (except for serious
	* runtime errors), and 7 means _very_ verbose.
	*/
	FT_BASE_DEF( void )
	ft_debug_init( void )
	{
	/* Windows Mobile doesn't have environment API: */
	/* GetEnvironmentStrings, GetEnvironmentVariable, getenv. */
	/* */
	/* FIXME!!! How to set debug mode? */

	/* const char* ft2_debug = getenv( "FT2_DEBUG" ); */

	const char* ft2_debug = NULL;


	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 )
	break;

	if ( *p == ':' && p > q )
	{
	FT_Int n, i, len = (FT_Int)( p - q );
	FT_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_enabled[n] = level;
	}
	else
	ft_trace_levels_enabled[found] = level;
	}
	}
	}
	}

	ft_trace_levels = ft_trace_levels_enabled;
	}


	#else /* !FT_DEBUG_LEVEL_TRACE */


	FT_BASE_DEF( void )
	ft_debug_init( void )
	{
	/* nothing */
	}


	FT_BASE_DEF( FT_Int )
	FT_Trace_Get_Count( void )
	{
	return 0;
	}


	FT_BASE_DEF( const char * )
	FT_Trace_Get_Name( FT_Int idx )
	{
	FT_UNUSED( idx );

	return NULL;
	}


	FT_BASE_DEF( void )
	FT_Trace_Disable( void )
	{
	/* nothing */
	}


	/* documentation is in ftdebug.h */

	FT_BASE_DEF( void )
	FT_Trace_Enable( void )
	{
	/* nothing */
	}


	#endif /* !FT_DEBUG_LEVEL_TRACE */


	/* END */