kc3-lang/freetype/src/base/ftdebug.c

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• Hash : ee06410b
  Author :
  Date : 2002-07-09T16:49:12
  

  * src/pshinter/pshglob.c: fixed a bug that prevented the hinter from using correct standard width and height values. resulting in hinting bugs with certain fonts (e.g. Utopia)

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• src/base/ftdebug.c

• /***************************************************************************/
  /*                                                                         */
  /*  ftdebug.c                                                              */
  /*                                                                         */
  /*    Debugging and logging component (body).                              */
  /*                                                                         */
  /*  Copyright 1996-2001 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_FREETYPE_H
  #include FT_INTERNAL_DEBUG_H
  
  
  #if defined( FT_DEBUG_LEVEL_ERROR )
  
    FT_EXPORT_DEF( void )
    FT_Message( const char*  fmt, ... )
    {
      va_list  ap;
  
  
      va_start( ap, fmt );
      vprintf( fmt, ap );
      va_end( ap );
    }
  
  
    FT_EXPORT_DEF( void )
    FT_Panic( const char*  fmt, ... )
    {
      va_list  ap;
  
  
      va_start( ap, fmt );
      vprintf( fmt, ap );
      va_end( ap );
  
      exit( EXIT_FAILURE );
    }
  
  #endif /* FT_DEBUG_LEVEL_ERROR */
  
  
  
  #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 > 6 )
                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 */
  
  
  /* END */
  

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