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kc3-lang/freetype/src/type1/t1load.c

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  • Author : Werner Lemberg
    Date : 2001-12-05 01:22:05
    Hash : c3b21608
    Message : Formatting. Cleaning up of ChangeLog. * docs/license.txt: s/X Windows/X Window System/. * src/raster/ftraster.c: Fix definition condition of MEM_Set(). * src/smooth/ftgrays.c (M_Y): Change value to 192. * src/base/ftdbgmem.c (ft_mem_table_destroy): Fix printf() parameter. Remove unused variable. * src/cache/ftcimage.c (ftc_image_node_init, ftc_image_node_compare): Remove unused variables. * src/cache/ftcsbits.c (ftc_sbit_node_weight): Remove unused variable. * src/raster/ftraster.c (MEM_Set): Move definition down to avoid compiler warning. * src/autohint/ahhint.c (ah_hinter_hint_edges): Use UNUSED() to avoid compiler warnings. * src/pcf/pcfread.c (tableNames): Use `const'. (pcf_read_TOC): Change counter name to avoid compiler warning. Use `const'. * src/pshinter/pshrec.c (ps_hints_close): Remove redundant declaration. * src/pshinter/pshalgo1.c (psh1_hint_table_init): Rename variables to avoid shadowing. * src/pshinter/pshalgo2.c (psh2_hint_table_activate_mask): Ditto. * src/type1/t1objs.h: Remove double declarations of `T1_Size_Init()' and `T1_Size_Done()'.

  • src/type1/t1load.c
  • /***************************************************************************/
    /*                                                                         */
    /*  t1load.c                                                               */
    /*                                                                         */
    /*    Type 1 font loader (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 is the new and improved Type 1 data loader for FreeType 2.  The  */
      /* old loader has several problems: it is slow, complex, difficult to    */
      /* maintain, and contains incredible hacks to make it accept some        */
      /* ill-formed Type 1 fonts without hiccup-ing.  Moreover, about 5% of    */
      /* the Type 1 fonts on my machine still aren't loaded correctly by it.   */
      /*                                                                       */
      /* This version is much simpler, much faster and also easier to read and */
      /* maintain by a great order of magnitude.  The idea behind it is to     */
      /* _not_ try to read the Type 1 token stream with a state machine (i.e.  */
      /* a Postscript-like interpreter) but rather to perform simple pattern   */
      /* matching.                                                             */
      /*                                                                       */
      /* Indeed, nearly all data definitions follow a simple pattern like      */
      /*                                                                       */
      /*  ... /Field <data> ...                                                */
      /*                                                                       */
      /* where <data> can be a number, a boolean, a string, or an array of     */
      /* numbers.  There are a few exceptions, namely the encoding, font name, */
      /* charstrings, and subrs; they are handled with a special pattern       */
      /* matching routine.                                                     */
      /*                                                                       */
      /* All other common cases are handled very simply.  The matching rules   */
      /* are defined in the file `t1tokens.h' through the use of several       */
      /* macros calls PARSE_XXX.                                               */
      /*                                                                       */
      /* This file is included twice here; the first time to generate parsing  */
      /* callback functions, the second to generate a table of keywords (with  */
      /* pointers to the associated callback).                                 */
      /*                                                                       */
      /* The function `parse_dict' simply scans *linearly* a given dictionary  */
      /* (either the top-level or private one) and calls the appropriate       */
      /* callback when it encounters an immediate keyword.                     */
      /*                                                                       */
      /* This is by far the fastest way one can find to parse and read all     */
      /* data.                                                                 */
      /*                                                                       */
      /* This led to tremendous code size reduction.  Note that later, the     */
      /* glyph loader will also be _greatly_ simplified, and the automatic     */
      /* hinter will replace the clumsy `t1hinter'.                            */
      /*                                                                       */
      /*************************************************************************/
    
    
    #include <ft2build.h>
    #include FT_INTERNAL_DEBUG_H
    #include FT_CONFIG_CONFIG_H
    #include FT_MULTIPLE_MASTERS_H
    #include FT_INTERNAL_TYPE1_TYPES_H
    
    #include "t1load.h"
    
    #include "t1errors.h"
    
    #include <string.h>     /* for strncmp(), strcmp() */
    #include <ctype.h>      /* for isalnum()           */
    
    
      /*************************************************************************/
      /*                                                                       */
      /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
      /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
      /* messages during execution.                                            */
      /*                                                                       */
    #undef  FT_COMPONENT
    #define FT_COMPONENT  trace_t1load
    
    
    #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
    
    
      /*************************************************************************/
      /*************************************************************************/
      /*****                                                               *****/
      /*****                    MULTIPLE MASTERS SUPPORT                   *****/
      /*****                                                               *****/
      /*************************************************************************/
      /*************************************************************************/
    
      static FT_Error
      t1_allocate_blend( T1_Face  face,
                         FT_UInt  num_designs,
                         FT_UInt  num_axis )
      {
        T1_Blend*  blend;
        FT_Memory  memory = face->root.memory;
        FT_Error   error  = 0;
    
    
        blend = face->blend;
        if ( !blend )
        {
          if ( ALLOC( blend, sizeof ( *blend ) ) )
            goto Exit;
    
          face->blend = blend;
        }
    
        /* allocate design data if needed */
        if ( num_designs > 0 )
        {
          if ( blend->num_designs == 0 )
          {
            FT_UInt  nn;
    
    
            /* allocate the blend `private' and `font_info' dictionaries */
            if ( ALLOC_ARRAY( blend->font_infos[1], num_designs, T1_FontInfo )  ||
                 ALLOC_ARRAY( blend->privates[1], num_designs, T1_Private )     ||
                 ALLOC_ARRAY( blend->weight_vector, num_designs * 2, FT_Fixed ) )
              goto Exit;
    
            blend->default_weight_vector = blend->weight_vector + num_designs;
    
            blend->font_infos[0] = &face->type1.font_info;
            blend->privates  [0] = &face->type1.private_dict;
    
            for ( nn = 2; nn <= num_designs; nn++ )
            {
              blend->privates[nn]   = blend->privates  [nn - 1] + 1;
              blend->font_infos[nn] = blend->font_infos[nn - 1] + 1;
            }
    
            blend->num_designs   = num_designs;
          }
          else if ( blend->num_designs != num_designs )
            goto Fail;
        }
    
        /* allocate axis data if needed */
        if ( num_axis > 0 )
        {
          if ( blend->num_axis != 0 && blend->num_axis != num_axis )
            goto Fail;
    
          blend->num_axis = num_axis;
        }
    
        /* allocate the blend design pos table if needed */
        num_designs = blend->num_designs;
        num_axis    = blend->num_axis;
        if ( num_designs && num_axis && blend->design_pos[0] == 0 )
        {
          FT_UInt  n;
    
    
          if ( ALLOC_ARRAY( blend->design_pos[0],
                            num_designs * num_axis, FT_Fixed ) )
            goto Exit;
    
          for ( n = 1; n < num_designs; n++ )
            blend->design_pos[n] = blend->design_pos[0] + num_axis * n;
        }
    
      Exit:
        return error;
    
      Fail:
        error = -1;
        goto Exit;
      }
    
    
      FT_LOCAL_DEF FT_Error
      T1_Get_Multi_Master( T1_Face           face,
                           FT_Multi_Master*  master )
      {
        T1_Blend*  blend = face->blend;
        FT_UInt    n;
        FT_Error   error;
    
    
        error = T1_Err_Invalid_Argument;
    
        if ( blend )
        {
          master->num_axis    = blend->num_axis;
          master->num_designs = blend->num_designs;
    
          for ( n = 0; n < blend->num_axis; n++ )
          {
            FT_MM_Axis*    axis = master->axis + n;
            T1_DesignMap*  map = blend->design_map + n;
    
    
            axis->name    = blend->axis_names[n];
            axis->minimum = map->design_points[0];
            axis->maximum = map->design_points[map->num_points - 1];
          }
          error = 0;
        }
        return error;
      }
    
    
      FT_LOCAL_DEF FT_Error
      T1_Set_MM_Blend( T1_Face    face,
                       FT_UInt    num_coords,
                       FT_Fixed*  coords )
      {
        T1_Blend*  blend = face->blend;
        FT_Error   error;
        FT_UInt    n, m;
    
    
        error = T1_Err_Invalid_Argument;
    
        if ( blend && blend->num_axis == num_coords )
        {
          /* recompute the weight vector from the blend coordinates */
          error = T1_Err_Ok;
    
          for ( n = 0; n < blend->num_designs; n++ )
          {
            FT_Fixed  result = 0x10000L;  /* 1.0 fixed */
    
    
            for ( m = 0; m < blend->num_axis; m++ )
            {
              FT_Fixed  factor;
    
    
              /* get current blend axis position */
              factor = coords[m];
              if ( factor < 0 )        factor = 0;
              if ( factor > 0x10000L ) factor = 0x10000L;
    
              if ( ( n & ( 1 << m ) ) == 0 )
                factor = 0x10000L - factor;
    
              result = FT_MulFix( result, factor );
            }
            blend->weight_vector[n] = result;
          }
    
          error = T1_Err_Ok;
        }
        return error;
      }
    
    
      FT_LOCAL_DEF FT_Error
      T1_Set_MM_Design( T1_Face   face,
                        FT_UInt   num_coords,
                        FT_Long*  coords )
      {
        T1_Blend*  blend = face->blend;
        FT_Error   error;
        FT_UInt    n, p;
    
    
        error = T1_Err_Invalid_Argument;
        if ( blend && blend->num_axis == num_coords )
        {
          /* compute the blend coordinates through the blend design map */
          FT_Fixed  final_blends[T1_MAX_MM_DESIGNS];
    
    
          for ( n = 0; n < blend->num_axis; n++ )
          {
            FT_Long        design  = coords[n];
            FT_Fixed       the_blend;
            T1_DesignMap*  map     = blend->design_map + n;
            FT_Fixed*      designs = map->design_points;
            FT_Fixed*      blends  = map->blend_points;
            FT_Int         before  = -1, after = -1;
    
            for ( p = 0; p < (FT_UInt)map->num_points; p++ )
            {
              FT_Fixed  p_design = designs[p];
    
    
              /* exact match ? */
              if ( design == p_design )
              {
                the_blend = blends[p];
                goto Found;
              }
    
              if ( design < p_design )
              {
                after = p;
                break;
              }
    
              before = p;
            }
    
            /* now, interpolate if needed */
            if ( before < 0 )
              the_blend = blends[0];
    
            else if ( after < 0 )
              the_blend = blends[map->num_points - 1];
    
            else
              the_blend = FT_MulDiv( design         - designs[before],
                                     blends [after] - blends [before],
                                     designs[after] - designs[before] );
    
          Found:
            final_blends[n] = the_blend;
          }
    
          error = T1_Set_MM_Blend( face, num_coords, final_blends );
        }
    
        return error;
      }
    
    
      FT_LOCAL_DEF void
      T1_Done_Blend( T1_Face  face )
      {
        FT_Memory  memory = face->root.memory;
        T1_Blend*  blend  = face->blend;
    
    
        if ( blend )
        {
          FT_UInt  num_designs = blend->num_designs;
          FT_UInt  num_axis    = blend->num_axis;
          FT_UInt  n;
    
    
          /* release design pos table */
          FREE( blend->design_pos[0] );
          for ( n = 1; n < num_designs; n++ )
            blend->design_pos[n] = 0;
    
          /* release blend `private' and `font info' dictionaries */
          FREE( blend->privates[1] );
          FREE( blend->font_infos[1] );
    
          for ( n = 0; n < num_designs; n++ )
          {
            blend->privates  [n] = 0;
            blend->font_infos[n] = 0;
          }
    
          /* release weight vectors */
          FREE( blend->weight_vector );
          blend->default_weight_vector = 0;
    
          /* release axis names */
          for ( n = 0; n < num_axis; n++ )
            FREE( blend->axis_names[n] );
    
          /* release design map */
          for ( n = 0; n < num_axis; n++ )
          {
            T1_DesignMap*  dmap = blend->design_map + n;
    
    
            FREE( dmap->design_points );
            dmap->num_points = 0;
          }
    
          FREE( face->blend );
        }
      }
    
    
      static void
      parse_blend_axis_types( T1_Face     face,
                              T1_Loader*  loader )
      {
        T1_Token   axis_tokens[ T1_MAX_MM_AXIS ];
        FT_Int     n, num_axis;
        FT_Error   error = 0;
        T1_Blend*  blend;
        FT_Memory  memory;
    
    
        /* take an array of objects */
        T1_ToTokenArray( &loader->parser, axis_tokens,
                         T1_MAX_MM_AXIS, &num_axis );
        if ( num_axis <= 0 || num_axis > T1_MAX_MM_AXIS )
        {
          FT_ERROR(( "parse_blend_axis_types: incorrect number of axes: %d\n",
                     num_axis ));
          error = T1_Err_Invalid_File_Format;
          goto Exit;
        }
    
        /* allocate blend if necessary */
        error = t1_allocate_blend( face, 0, (FT_UInt)num_axis );
        if ( error )
          goto Exit;
    
        blend  = face->blend;
        memory = face->root.memory;
    
        /* each token is an immediate containing the name of the axis */
        for ( n = 0; n < num_axis; n++ )
        {
          T1_Token*  token = axis_tokens + n;
          FT_Byte*   name;
          FT_Int     len;
    
          /* skip first slash, if any */
          if (token->start[0] == '/')
            token->start++;
    
          len = (FT_Int)( token->limit - token->start );
          if ( len <= 0 )
          {
            error = T1_Err_Invalid_File_Format;
            goto Exit;
          }
    
          if ( ALLOC( blend->axis_names[n], len + 1 ) )
            goto Exit;
    
          name = (FT_Byte*)blend->axis_names[n];
          MEM_Copy( name, token->start, len );
          name[len] = 0;
        }
    
      Exit:
        loader->parser.root.error = error;
      }
    
    
      static void
      parse_blend_design_positions( T1_Face     face,
                                    T1_Loader*  loader )
      {
        T1_Token       design_tokens[ T1_MAX_MM_DESIGNS ];
        FT_Int         num_designs;
        FT_Int         num_axis;
        T1_ParserRec*  parser = &loader->parser;
    
        FT_Error       error = 0;
        T1_Blend*      blend;
    
    
        /* get the array of design tokens - compute number of designs */
        T1_ToTokenArray( parser, design_tokens, T1_MAX_MM_DESIGNS, &num_designs );
        if ( num_designs <= 0 || num_designs > T1_MAX_MM_DESIGNS )
        {
          FT_ERROR(( "parse_blend_design_positions:" ));
          FT_ERROR(( " incorrect number of designs: %d\n",
                     num_designs ));
          error = T1_Err_Invalid_File_Format;
          goto Exit;
        }
    
        {
          FT_Byte*  old_cursor = parser->root.cursor;
          FT_Byte*  old_limit  = parser->root.limit;
          FT_UInt   n;
    
    
          blend    = face->blend;
          num_axis = 0;  /* make compiler happy */
    
          for ( n = 0; n < (FT_UInt)num_designs; n++ )
          {
            T1_Token   axis_tokens[ T1_MAX_MM_DESIGNS ];
            T1_Token*  token;
            FT_Int     axis, n_axis;
    
    
            /* read axis/coordinates tokens */
            token = design_tokens + n;
            parser->root.cursor = token->start - 1;
            parser->root.limit  = token->limit + 1;
            T1_ToTokenArray( parser, axis_tokens, T1_MAX_MM_AXIS, &n_axis );
    
            if ( n == 0 )
            {
              num_axis = n_axis;
              error = t1_allocate_blend( face, num_designs, num_axis );
              if ( error )
                goto Exit;
              blend = face->blend;
            }
            else if ( n_axis != num_axis )
            {
              FT_ERROR(( "parse_blend_design_positions: incorrect table\n" ));
              error = T1_Err_Invalid_File_Format;
              goto Exit;
            }
    
            /* now, read each axis token into the design position */
            for ( axis = 0; axis < n_axis; axis++ )
            {
              T1_Token*  token2 = axis_tokens + axis;
    
    
              parser->root.cursor = token2->start;
              parser->root.limit  = token2->limit;
              blend->design_pos[n][axis] = T1_ToFixed( parser, 0 );
            }
          }
    
          loader->parser.root.cursor = old_cursor;
          loader->parser.root.limit  = old_limit;
        }
    
      Exit:
        loader->parser.root.error = error;
      }
    
    
      static void
      parse_blend_design_map( T1_Face     face,
                              T1_Loader*  loader )
      {
        FT_Error       error  = 0;
        T1_ParserRec*  parser = &loader->parser;
        T1_Blend*      blend;
        T1_Token       axis_tokens[ T1_MAX_MM_AXIS ];
        FT_Int         n, num_axis;
        FT_Byte*       old_cursor;
        FT_Byte*       old_limit;
        FT_Memory      memory = face->root.memory;
    
    
        T1_ToTokenArray( parser, axis_tokens, T1_MAX_MM_AXIS, &num_axis );
        if ( num_axis <= 0 || num_axis > T1_MAX_MM_AXIS )
        {
          FT_ERROR(( "parse_blend_design_map: incorrect number of axes: %d\n",
                     num_axis ));
          error = T1_Err_Invalid_File_Format;
          goto Exit;
        }
        old_cursor = parser->root.cursor;
        old_limit  = parser->root.limit;
    
        error = t1_allocate_blend( face, 0, num_axis );
        if ( error )
          goto Exit;
        blend = face->blend;
    
        /* now, read each axis design map */
        for ( n = 0; n < num_axis; n++ )
        {
          T1_DesignMap* map = blend->design_map + n;
          T1_Token*     token;
          FT_Int        p, num_points;
    
    
          token = axis_tokens + n;
          parser->root.cursor = token->start;
          parser->root.limit  = token->limit;
    
          /* count the number of map points */
          {
            FT_Byte*  ptr   = token->start;
            FT_Byte*  limit = token->limit;
    
    
            num_points = 0;
            for ( ; ptr < limit; ptr++ )
              if ( ptr[0] == '[' )
                num_points++;
          }
          if ( num_points <= 0 || num_points > T1_MAX_MM_MAP_POINTS )
          {
            FT_ERROR(( "parse_blend_design_map: incorrect table\n" ));
            error = T1_Err_Invalid_File_Format;
            goto Exit;
          }
    
          /* allocate design map data */
          if ( ALLOC_ARRAY( map->design_points, num_points * 2, FT_Fixed ) )
            goto Exit;
          map->blend_points = map->design_points + num_points;
          map->num_points   = (FT_Byte)num_points;
    
          for ( p = 0; p < num_points; p++ )
          {
            map->design_points[p] = T1_ToInt( parser );
            map->blend_points [p] = T1_ToFixed( parser, 0 );
          }
        }
    
        parser->root.cursor = old_cursor;
        parser->root.limit  = old_limit;
    
      Exit:
        parser->root.error = error;
      }
    
    
      static void
      parse_weight_vector( T1_Face     face,
                           T1_Loader*  loader )
      {
        FT_Error       error  = 0;
        T1_ParserRec*  parser = &loader->parser;
        T1_Blend*      blend  = face->blend;
        T1_Token       master;
        FT_UInt        n;
        FT_Byte*       old_cursor;
        FT_Byte*       old_limit;
    
    
        if ( !blend || blend->num_designs == 0 )
        {
          FT_ERROR(( "parse_weight_vector: too early!\n" ));
          error = T1_Err_Invalid_File_Format;
          goto Exit;
        }
    
        T1_ToToken( parser, &master );
        if ( master.type != t1_token_array )
        {
          FT_ERROR(( "parse_weight_vector: incorrect format!\n" ));
          error = T1_Err_Invalid_File_Format;
          goto Exit;
        }
    
        old_cursor = parser->root.cursor;
        old_limit  = parser->root.limit;
    
        parser->root.cursor = master.start;
        parser->root.limit  = master.limit;
    
        for ( n = 0; n < blend->num_designs; n++ )
        {
          blend->default_weight_vector[n] =
          blend->weight_vector[n]         = T1_ToFixed( parser, 0 );
        }
    
        parser->root.cursor = old_cursor;
        parser->root.limit  = old_limit;
    
      Exit:
        parser->root.error = error;
      }
    
    
      /* the keyword `/shareddict' appears in some multiple master fonts   */
      /* with a lot of Postscript garbage behind it (that's completely out */
      /* of spec!); we detect it and terminate the parsing                 */
      /*                                                                   */
      static void
      parse_shared_dict( T1_Face     face,
                         T1_Loader*  loader )
      {
        T1_ParserRec*  parser = &loader->parser;
    
        FT_UNUSED( face );
    
    
        parser->root.cursor = parser->root.limit;
        parser->root.error  = 0;
      }
    
    #endif /* T1_CONFIG_OPTION_NO_MM_SUPPORT */
    
    
      /*************************************************************************/
      /*************************************************************************/
      /*****                                                               *****/
      /*****                      TYPE 1 SYMBOL PARSING                    *****/
      /*****                                                               *****/
      /*************************************************************************/
      /*************************************************************************/
    
    
      /*************************************************************************/
      /*                                                                       */
      /* First of all, define the token field static variables.  This is a set */
      /* of T1_Field variables used later.                                     */
      /*                                                                       */
      /*************************************************************************/
    
    
      static FT_Error
      t1_load_keyword( T1_Face     face,
                       T1_Loader*  loader,
                       T1_Field*   field )
      {
        FT_Error   error;
        void*      dummy_object;
        void**     objects;
        FT_UInt    max_objects;
        T1_Blend*  blend = face->blend;
    
    
        /* if the keyword has a dedicated callback, call it */
        if ( field->type == t1_field_callback )
        {
          field->reader( (FT_Face)face, loader );
          error = loader->parser.root.error;
          goto Exit;
        }
    
        /* now, the keyword is either a simple field, or a table of fields; */
        /* we are now going to take care of it                              */
        switch ( field->location )
        {
        case t1_field_font_info:
          dummy_object = &face->type1.font_info;
          objects      = &dummy_object;
          max_objects  = 0;
    
          if ( blend )
          {
            objects     = (void**)blend->font_infos;
            max_objects = blend->num_designs;
          }
          break;
    
        case t1_field_private:
          dummy_object = &face->type1.private_dict;
          objects      = &dummy_object;
          max_objects  = 0;
    
          if ( blend )
          {
            objects     = (void**)blend->privates;
            max_objects = blend->num_designs;
          }
          break;
    
        default:
          dummy_object = &face->type1;
          objects      = &dummy_object;
          max_objects  = 0;
        }
    
        if ( field->type == t1_field_integer_array ||
             field->type == t1_field_fixed_array   )
          error = T1_Load_Field_Table( &loader->parser, field,
                                       objects, max_objects, 0 );
        else
          error = T1_Load_Field( &loader->parser, field,
                                 objects, max_objects, 0 );
    
      Exit:
        return error;
      }
    
    
      static int
      is_space( FT_Byte  c )
      {
        return ( c == ' ' || c == '\t' || c == '\r' || c == '\n' );
      }
    
    
      static int
      is_alpha( FT_Byte  c )
      {
        /* Note: we must accept "+" as a valid character, as it is used in */
        /*       embedded type1 fonts in PDF documents.                    */
        /*                                                                 */
        return ( isalnum( c ) || c == '.' || c == '_' || c == '-' || c == '+' );
      }
    
    
      static int
      read_binary_data( T1_ParserRec*  parser,
                        FT_Int*        size,
                        FT_Byte**      base )
      {
        FT_Byte*  cur;
        FT_Byte*  limit = parser->root.limit;
    
    
        /* the binary data has the following format */
        /*                                          */
        /* `size' [white*] RD white ....... ND      */
        /*                                          */
    
        T1_Skip_Spaces( parser );
        cur = parser->root.cursor;
    
        if ( cur < limit && (FT_Byte)( *cur - '0' ) < 10 )
        {
          *size = T1_ToInt( parser );
    
          T1_Skip_Spaces( parser );
          T1_Skip_Alpha ( parser );  /* `RD' or `-|' or something else */
    
          /* there is only one whitespace char after the */
          /* `RD' or `-|' token                          */
          *base = parser->root.cursor + 1;
    
          parser->root.cursor += *size + 1;
          return 1;
        }
    
        FT_ERROR(( "read_binary_data: invalid size field\n" ));
        parser->root.error = T1_Err_Invalid_File_Format;
        return 0;
      }
    
    
      /* we will now define the routines used to handle */
      /* the `/Encoding', `/Subrs', and `/CharStrings'  */
      /* dictionaries                                   */
    
      static void
      parse_font_name( T1_Face     face,
                       T1_Loader*  loader )
      {
        T1_ParserRec*  parser = &loader->parser;
        FT_Error       error;
        FT_Memory      memory = parser->root.memory;
        FT_Int         len;
        FT_Byte*       cur;
        FT_Byte*       cur2;
        FT_Byte*       limit;
    
    
        if ( face->type1.font_name )
          /*  with synthetic fonts, it's possible we get here twice  */
          return;
    
        T1_Skip_Spaces( parser );
    
        cur   = parser->root.cursor;
        limit = parser->root.limit;
    
        if ( cur >= limit - 1 || *cur != '/' )
          return;
    
        cur++;
        cur2 = cur;
        while ( cur2 < limit && is_alpha( *cur2 ) )
          cur2++;
    
        len = (FT_Int)( cur2 - cur );
        if ( len > 0 )
        {
          if ( ALLOC( face->type1.font_name, len + 1 ) )
          {
            parser->root.error = error;
            return;
          }
    
          MEM_Copy( face->type1.font_name, cur, len );
          face->type1.font_name[len] = '\0';
        }
        parser->root.cursor = cur2;
      }
    
    
      static void
      parse_font_bbox( T1_Face     face,
                       T1_Loader*  loader )
      {
        T1_ParserRec*  parser = &loader->parser;
        FT_Fixed       temp[4];
        FT_BBox*       bbox   = &face->type1.font_bbox;
    
    
        (void)T1_ToFixedArray( parser, 4, temp, 0 );
        bbox->xMin = FT_RoundFix( temp[0] );
        bbox->yMin = FT_RoundFix( temp[1] );
        bbox->xMax = FT_RoundFix( temp[2] );
        bbox->yMax = FT_RoundFix( temp[3] );
      }
    
    
      static void
      parse_font_matrix( T1_Face     face,
                         T1_Loader*  loader )
      {
        T1_ParserRec*  parser = &loader->parser;
        FT_Matrix*     matrix = &face->type1.font_matrix;
        FT_Vector*     offset = &face->type1.font_offset;
        FT_Face        root   = (FT_Face)&face->root;
        FT_Fixed       temp[6];
        FT_Fixed       temp_scale;
    
    
        if ( matrix->xx || matrix->yx )
          /*  with synthetic fonts, it's possible we get here twice  */
          return;
    
        (void)T1_ToFixedArray( parser, 6, temp, 3 );
    
        temp_scale = ABS( temp[3] );
    
        /* Set Units per EM based on FontMatrix values.  We set the value to */
        /* 1000 / temp_scale, because temp_scale was already multiplied by   */
        /* 1000 (in t1_tofixed, from psobjs.c).                              */
    
        root->units_per_EM = (FT_UShort)( FT_DivFix( 1000 * 0x10000L,
                                                     temp_scale ) >> 16 );
    
        /* we need to scale the values by 1.0/temp_scale */
        if ( temp_scale != 0x10000L )
        {
          temp[0] = FT_DivFix( temp[0], temp_scale );
          temp[1] = FT_DivFix( temp[1], temp_scale );
          temp[2] = FT_DivFix( temp[2], temp_scale );
          temp[4] = FT_DivFix( temp[4], temp_scale );
          temp[5] = FT_DivFix( temp[5], temp_scale );
          temp[3] = 0x10000L;
        }
    
        matrix->xx = temp[0];
        matrix->yx = temp[1];
        matrix->xy = temp[2];
        matrix->yy = temp[3];
    
        /* note that the offsets must be expressed in integer font units */
        offset->x  = temp[4] >> 16;
        offset->y  = temp[5] >> 16;
      }
    
    
      static void
      parse_encoding( T1_Face     face,
                      T1_Loader*  loader )
      {
        T1_ParserRec*  parser = &loader->parser;
        FT_Byte*       cur    = parser->root.cursor;
        FT_Byte*       limit  = parser->root.limit;
    
        PSAux_Interface*  psaux = (PSAux_Interface*)face->psaux;
    
    
        /* skip whitespace */
        while ( is_space( *cur ) )
        {
          cur++;
          if ( cur >= limit )
          {
            FT_ERROR(( "parse_encoding: out of bounds!\n" ));
            parser->root.error = T1_Err_Invalid_File_Format;
            return;
          }
        }
    
        /* if we have a number, then the encoding is an array, */
        /* and we must load it now                             */
        if ( (FT_Byte)( *cur - '0' ) < 10 )
        {
          T1_Encoding*  encode     = &face->type1.encoding;
          FT_Int        count, n;
          PS_Table*     char_table = &loader->encoding_table;
          FT_Memory     memory     = parser->root.memory;
          FT_Error      error;
    
    
          if ( encode->char_index )
            /*  with synthetic fonts, it's possible we get here twice  */
            return;
    
          /* read the number of entries in the encoding, should be 256 */
          count = T1_ToInt( parser );
          if ( parser->root.error )
            return;
    
          /* we use a T1_Table to store our charnames */
          encode->num_chars = count;
          if ( ALLOC_ARRAY( encode->char_index, count, FT_Short   ) ||
               ALLOC_ARRAY( encode->char_name,  count, FT_String* ) ||
               ( error = psaux->ps_table_funcs->init(
                           char_table, count, memory ) ) != 0       )
          {
            parser->root.error = error;
            return;
          }
    
          /* We need to `zero' out encoding_table.elements          */
          for ( n = 0; n < count; n++ )
          {
            char*  notdef = (char *)".notdef";
    
    
            T1_Add_Table( char_table, n, notdef, 8 );
          }
    
          /* Now, we will need to read a record of the form         */
          /* ... charcode /charname ... for each entry in our table */
          /*                                                        */
          /* We simply look for a number followed by an immediate   */
          /* name.  Note that this ignores correctly the sequence   */
          /* that is often seen in type1 fonts:                     */
          /*                                                        */
          /*   0 1 255 { 1 index exch /.notdef put } for dup        */
          /*                                                        */
          /* used to clean the encoding array before anything else. */
          /*                                                        */
          /* We stop when we encounter a `def'.                     */
    
          cur   = parser->root.cursor;
          limit = parser->root.limit;
          n     = 0;
    
          for ( ; cur < limit; )
          {
            FT_Byte  c;
    
    
            c = *cur;
    
            /* we stop when we encounter a `def' */
            if ( c == 'd' && cur + 3 < limit )
            {
              if ( cur[1] == 'e' &&
                   cur[2] == 'f' &&
                   is_space(cur[-1]) &&
                   is_space(cur[3]) )
              {
                FT_TRACE6(( "encoding end\n" ));
                break;
              }
            }
    
            /* otherwise, we must find a number before anything else */
            if ( (FT_Byte)( c - '0' ) < 10 )
            {
              FT_Int  charcode;
    
    
              parser->root.cursor = cur;
              charcode = T1_ToInt( parser );
              cur = parser->root.cursor;
    
              /* skip whitespace */
              while ( cur < limit && is_space( *cur ) )
                cur++;
    
              if ( cur < limit && *cur == '/' )
              {
                /* bingo, we have an immediate name -- it must be a */
                /* character name                                   */
                FT_Byte*  cur2 = cur + 1;
                FT_Int    len;
    
    
                while ( cur2 < limit && is_alpha( *cur2 ) )
                  cur2++;
    
                len = (FT_Int)( cur2 - cur - 1 );
    
                parser->root.error = T1_Add_Table( char_table, charcode,
                                                   cur + 1, len + 1 );
                char_table->elements[charcode][len] = '\0';
                if ( parser->root.error )
                  return;
    
                cur = cur2;
              }
            }
            else
              cur++;
          }
    
          face->type1.encoding_type = t1_encoding_array;
          parser->root.cursor       = cur;
        }
        /* Otherwise, we should have either `StandardEncoding' or */
        /* `ExpertEncoding'                                       */
        else
        {
          if ( cur + 17 < limit &&
               strncmp( (const char*)cur, "StandardEncoding", 16 ) == 0 )
            face->type1.encoding_type = t1_encoding_standard;
    
          else if ( cur + 15 < limit &&
                    strncmp( (const char*)cur, "ExpertEncoding", 14 ) == 0 )
            face->type1.encoding_type = t1_encoding_expert;
    
          else
          {
            FT_ERROR(( "parse_encoding: invalid token!\n" ));
            parser->root.error = T1_Err_Invalid_File_Format;
          }
        }
      }
    
    
      static void
      parse_subrs( T1_Face     face,
                   T1_Loader*  loader )
      {
        T1_ParserRec*  parser = &loader->parser;
        PS_Table*      table  = &loader->subrs;
        FT_Memory      memory = parser->root.memory;
        FT_Error       error;
        FT_Int         n;
    
        PSAux_Interface*  psaux = (PSAux_Interface*)face->psaux;
    
    
        if ( loader->num_subrs )
          /*  with synthetic fonts, it's possible we get here twice  */
          return;
    
        loader->num_subrs = T1_ToInt( parser );
        if ( parser->root.error )
          return;
    
        /* position the parser right before the `dup' of the first subr */
        T1_Skip_Spaces( parser );
        T1_Skip_Alpha( parser );      /* `array' */
        T1_Skip_Spaces( parser );
    
        /* initialize subrs array */
        error = psaux->ps_table_funcs->init( table, loader->num_subrs, memory );
        if ( error )
          goto Fail;
    
        /* the format is simple:                                 */
        /*                                                       */
        /*   `index' + binary data                               */
        /*                                                       */
    
        for ( n = 0; n < loader->num_subrs; n++ )
        {
          FT_Int    index, size;
          FT_Byte*  base;
    
    
          /* If the next token isn't `dup', we are also done.  This */
          /* happens when there are `holes' in the Subrs array.     */
          if ( strncmp( (char*)parser->root.cursor, "dup", 3 ) != 0 )
            break;
    
          index = T1_ToInt( parser );
    
          if ( !read_binary_data( parser, &size, &base ) )
            return;
    
          /* The binary string is followed by one token, e.g. `NP' */
          /* (bound to `noaccess put') or by two separate tokens:  */
          /* `noaccess' & `put'.  We position the parser right     */
          /* before the next `dup', if any.                        */
          T1_Skip_Spaces( parser );
          T1_Skip_Alpha( parser );    /* `NP' or `I' or `noaccess' */
          T1_Skip_Spaces( parser );
    
          if ( strncmp( (char*)parser->root.cursor, "put", 3 ) == 0 )
          {
            T1_Skip_Alpha( parser );  /* skip `put' */
            T1_Skip_Spaces( parser );
          }
    
          /* some fonts use a value of -1 for lenIV to indicate that */
          /* the charstrings are unencoded                           */
          /*                                                         */
          /* thanks to Tom Kacvinsky for pointing this out           */
          /*                                                         */
          if ( face->type1.private_dict.lenIV >= 0 )
          {
            psaux->t1_decrypt( base, size, 4330 );
            size -= face->type1.private_dict.lenIV;
            base += face->type1.private_dict.lenIV;
          }
    
          error = T1_Add_Table( table, index, base, size );
          if ( error )
            goto Fail;
        }
        return;
    
      Fail:
        parser->root.error = error;
      }
    
    
      static void
      parse_charstrings( T1_Face     face,
                         T1_Loader*  loader )
      {
        T1_ParserRec*  parser     = &loader->parser;
        PS_Table*      code_table = &loader->charstrings;
        PS_Table*      name_table = &loader->glyph_names;
        PS_Table*      swap_table = &loader->swap_table;
        FT_Memory      memory     = parser->root.memory;
        FT_Error       error;
    
        PSAux_Interface*  psaux = (PSAux_Interface*)face->psaux;
    
        FT_Byte*    cur;
        FT_Byte*    limit = parser->root.limit;
        FT_Int      n;
        FT_UInt     notdef_index = 0;
        FT_Byte     notdef_found = 0;
    
    
        if ( loader->num_glyphs )
          /*  with synthetic fonts, it's possible we get here twice  */
          return;
    
        loader->num_glyphs = T1_ToInt( parser );
        if ( parser->root.error )
          return;
    
        /* initialize tables (leaving room for addition of .notdef, */
        /* if necessary).                                           */
    
        error = psaux->ps_table_funcs->init( code_table,
                                             loader->num_glyphs + 1,
                                             memory );
        if ( error )
          goto Fail;
    
        error = psaux->ps_table_funcs->init( name_table,
                                             loader->num_glyphs + 1,
                                             memory );
        if ( error )
          goto Fail;
    
        /* Initialize table for swapping index notdef_index and */
        /* index 0 names and codes (if necessary).              */
    
        error = psaux->ps_table_funcs->init( swap_table, 4, memory );
    
        if ( error )
          goto Fail;
    
    
        n = 0;
        for (;;)
        {
          FT_Int    size;
          FT_Byte*  base;
    
    
          /* the format is simple:                    */
          /*   `/glyphname' + binary data             */
          /*                                          */
          /* note that we stop when we find a `def'   */
          /*                                          */
          T1_Skip_Spaces( parser );
    
          cur = parser->root.cursor;
          if ( cur >= limit )
            break;
    
          /* we stop when we find a `def' or `end' keyword */
          if ( *cur   == 'd'   &&
               cur + 3 < limit &&
               cur[1] == 'e'   &&
               cur[2] == 'f'   )
            break;
    
          if ( *cur   == 'e'   &&
               cur + 3 < limit &&
               cur[1] == 'n'   &&
               cur[2] == 'd'   )
            break;
    
          if ( *cur != '/' )
            T1_Skip_Alpha( parser );
          else
          {
            FT_Byte*  cur2 = cur + 1;
            FT_Int    len;
    
    
            while ( cur2 < limit && is_alpha( *cur2 ) )
              cur2++;
            len = (FT_Int)( cur2 - cur - 1 );
    
            error = T1_Add_Table( name_table, n, cur + 1, len + 1 );
            if ( error )
              goto Fail;
    
            /* add a trailing zero to the name table */
            name_table->elements[n][len] = '\0';
    
            /* record index of /.notdef              */
            if ( strcmp( (const char*)".notdef",
                         (const char*)(name_table->elements[n]) ) == 0 )
            {
              notdef_index = n;
              notdef_found = 1;
            }
    
            parser->root.cursor = cur2;
            if ( !read_binary_data( parser, &size, &base ) )
              return;
    
            if ( face->type1.private_dict.lenIV >= 0 )
            {
              psaux->t1_decrypt( base, size, 4330 );
              size -= face->type1.private_dict.lenIV;
              base += face->type1.private_dict.lenIV;
            }
    
            error = T1_Add_Table( code_table, n, base, size );
            if ( error )
              goto Fail;
    
            n++;
            if ( n >= loader->num_glyphs )
              break;
          }
        }
    
        loader->num_glyphs = n;
    
        /* if /.notdef is found but does not occupy index 0, do our magic.      */
        if ( strcmp( (const char*)".notdef",
                     (const char*)name_table->elements[0] ) &&
             notdef_found                                      )
        {
          /* Swap glyph in index 0 with /.notdef glyph.  First, add index 0    */
          /* name and code entries to swap_table. Then place notdef_index name */
          /* and code entries into swap_table.  Then swap name and code        */
          /* entries at indices notdef_index and 0 using values stored in      */
          /* swap_table.                                                       */
    
          /* Index 0 name */
          error = T1_Add_Table( swap_table, 0,
                                name_table->elements[0],
                                name_table->lengths [0] );
          if ( error )
            goto Fail;
    
          /* Index 0 code */
          error = T1_Add_Table( swap_table, 1,
                                code_table->elements[0],
                                code_table->lengths [0] );
          if ( error )
            goto Fail;
    
          /* Index notdef_index name */
          error = T1_Add_Table( swap_table, 2,
                                name_table->elements[notdef_index],
                                name_table->lengths [notdef_index] );
          if ( error )
            goto Fail;
    
          /* Index notdef_index code */
          error = T1_Add_Table( swap_table, 3,
                                code_table->elements[notdef_index],
                                code_table->lengths [notdef_index] );
          if ( error )
            goto Fail;
    
          error = T1_Add_Table( name_table, notdef_index,
                                swap_table->elements[0],
                                swap_table->lengths [0] );
          if ( error )
            goto Fail;
    
          error = T1_Add_Table( code_table, notdef_index,
                                swap_table->elements[1],
                                swap_table->lengths [1] );
          if ( error )
            goto Fail;
    
          error = T1_Add_Table( name_table, 0,
                                swap_table->elements[2],
                                swap_table->lengths [2] );
          if ( error )
            goto Fail;
    
          error = T1_Add_Table( code_table, 0,
                                swap_table->elements[3],
                                swap_table->lengths [3] );
          if ( error )
            goto Fail;
    
        }
        else if ( !notdef_found )
        {
    
          /* notdef_index is already 0, or /.notdef is undefined in  */
          /* charstrings dictionary. Worry about /.notdef undefined. */
          /* We take index 0 and add it to the end of the table(s)   */
          /* and add our own /.notdef glyph to index 0.              */
    
          /* 0 333 hsbw endchar                                      */
          FT_Byte  notdef_glyph[] = {0x8B, 0xF7, 0xE1, 0x0D, 0x0E};
          char*    notdef_name    = (char *)".notdef";
    
    
          error = T1_Add_Table( swap_table, 0,
                                name_table->elements[0],
                                name_table->lengths [0] );
          if ( error )
            goto Fail;
    
          error = T1_Add_Table( swap_table, 1,
                                code_table->elements[0],
                                code_table->lengths [0] );
          if ( error )
            goto Fail;
    
          error = T1_Add_Table( name_table, 0, notdef_name, 8 );
          if ( error )
            goto Fail;
    
          error = T1_Add_Table( code_table, 0, notdef_glyph, 5 );
    
          if ( error )
            goto Fail;
    
          error = T1_Add_Table( name_table, n,
                                swap_table->elements[0],
                                swap_table->lengths [0] );
          if ( error )
            goto Fail;
    
          error = T1_Add_Table( code_table, n,
                                swap_table->elements[1],
                                swap_table->lengths [1] );
          if ( error )
            goto Fail;
    
          /* we added a glyph. */
          loader->num_glyphs = n + 1;
    
        }
    
    
        return;
    
      Fail:
        parser->root.error = error;
      }
    
    
      static
      const T1_Field  t1_keywords[] =
      {
    
    #include "t1tokens.h"
    
        /* now add the special functions... */
        T1_FIELD_CALLBACK( "FontName", parse_font_name )
        T1_FIELD_CALLBACK( "FontBBox", parse_font_bbox )
        T1_FIELD_CALLBACK( "FontMatrix", parse_font_matrix )
        T1_FIELD_CALLBACK( "Encoding", parse_encoding )
        T1_FIELD_CALLBACK( "Subrs", parse_subrs )
        T1_FIELD_CALLBACK( "CharStrings", parse_charstrings )
    
    #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
        T1_FIELD_CALLBACK( "BlendDesignPositions", parse_blend_design_positions )
        T1_FIELD_CALLBACK( "BlendDesignMap", parse_blend_design_map )
        T1_FIELD_CALLBACK( "BlendAxisTypes", parse_blend_axis_types )
        T1_FIELD_CALLBACK( "WeightVector", parse_weight_vector )
        T1_FIELD_CALLBACK( "shareddict", parse_shared_dict )
    #endif
    
        { 0, t1_field_cid_info, t1_field_none, 0, 0, 0, 0, 0 }
      };
    
    
      static FT_Error
      parse_dict( T1_Face     face,
                  T1_Loader*  loader,
                  FT_Byte*    base,
                  FT_Long     size )
      {
        T1_ParserRec*  parser = &loader->parser;
    
    
        parser->root.cursor = base;
        parser->root.limit  = base + size;
        parser->root.error  = 0;
    
        {
          FT_Byte*  cur   = base;
          FT_Byte*  limit = cur + size;
    
    
          for ( ; cur < limit; cur++ )
          {
            /* look for `FontDirectory', which causes problems on some fonts */
            if ( *cur == 'F' && cur + 25 < limit                 &&
                 strncmp( (char*)cur, "FontDirectory", 13 ) == 0 )
            {
              FT_Byte*  cur2;
    
    
              /* skip the `FontDirectory' keyword */
              cur += 13;
              cur2 = cur;
    
              /* lookup the `known' keyword */
              while ( cur < limit && *cur != 'k'        &&
                      strncmp( (char*)cur, "known", 5 ) )
                cur++;
    
              if ( cur < limit )
              {
                T1_Token  token;
    
    
                /* skip the `known' keyword and the token following it */
                cur += 5;
                loader->parser.root.cursor = cur;
                T1_ToToken( &loader->parser, &token );
    
                /* if the last token was an array, skip it! */
                if ( token.type == t1_token_array )
                  cur2 = parser->root.cursor;
              }
              cur = cur2;
            }
            /* look for immediates */
            else if ( *cur == '/' && cur + 2 < limit )
            {
              FT_Byte*  cur2;
              FT_Int    len;
    
    
              cur++;
              cur2 = cur;
              while ( cur2 < limit && is_alpha( *cur2 ) )
                cur2++;
    
              len  = (FT_Int)( cur2 - cur );
              if ( len > 0 && len < 22 )
              {
                {
                  /* now, compare the immediate name to the keyword table */
                  T1_Field*  keyword = (T1_Field*)t1_keywords;
    
    
                  for (;;)
                  {
                    FT_Byte*  name;
    
    
                    name = (FT_Byte*)keyword->ident;
                    if ( !name )
                      break;
    
                    if ( cur[0] == name[0]                          &&
                         len == (FT_Int)strlen( (const char*)name ) )
                    {
                      FT_Int  n;
    
    
                      for ( n = 1; n < len; n++ )
                        if ( cur[n] != name[n] )
                          break;
    
                      if ( n >= len )
                      {
                        /* we found it -- run the parsing callback! */
                        parser->root.cursor = cur2;
                        T1_Skip_Spaces( parser );
                        parser->root.error = t1_load_keyword( face,
                                                              loader,
                                                              keyword );
                        if ( parser->root.error )
                          return parser->root.error;
    
                        cur = parser->root.cursor;
                        break;
                      }
                    }
                    keyword++;
                  }
                }
              }
            }
          }
        }
        return parser->root.error;
      }
    
    
      static void
      t1_init_loader( T1_Loader*  loader,
                      T1_Face     face )
      {
        FT_UNUSED( face );
    
        MEM_Set( loader, 0, sizeof ( *loader ) );
        loader->num_glyphs = 0;
        loader->num_chars  = 0;
    
        /* initialize the tables -- simply set their `init' field to 0 */
        loader->encoding_table.init = 0;
        loader->charstrings.init    = 0;
        loader->glyph_names.init    = 0;
        loader->subrs.init          = 0;
        loader->swap_table.init     = 0;
        loader->fontdata            = 0;
      }
    
    
      static void
      t1_done_loader( T1_Loader*  loader )
      {
        T1_ParserRec*  parser = &loader->parser;
    
    
        /* finalize tables */
        T1_Release_Table( &loader->encoding_table );
        T1_Release_Table( &loader->charstrings );
        T1_Release_Table( &loader->glyph_names );
        T1_Release_Table( &loader->swap_table );
        T1_Release_Table( &loader->subrs );
    
        /* finalize parser */
        T1_Finalize_Parser( parser );
      }
    
    
      FT_LOCAL_DEF FT_Error
      T1_Open_Face( T1_Face  face )
      {
        T1_Loader      loader;
        T1_ParserRec*  parser;
        T1_Font*       type1 = &face->type1;
        FT_Error       error;
    
        PSAux_Interface*  psaux = (PSAux_Interface*)face->psaux;
    
    
        t1_init_loader( &loader, face );
    
        /* default lenIV */
        type1->private_dict.lenIV = 4;
    
        parser = &loader.parser;
        error = T1_New_Parser( parser,
                               face->root.stream,
                               face->root.memory,
                               psaux );
        if ( error )
          goto Exit;
    
        error = parse_dict( face, &loader, parser->base_dict, parser->base_len );
        if ( error )
          goto Exit;
    
        error = T1_Get_Private_Dict( parser, psaux );
        if ( error )
          goto Exit;
    
        error = parse_dict( face, &loader, parser->private_dict,
                            parser->private_len );
        if ( error )
          goto Exit;
    
        /* now, propagate the subrs, charstrings, and glyphnames tables */
        /* to the Type1 data                                            */
        type1->num_glyphs = loader.num_glyphs;
    
        if ( loader.subrs.init )
        {
          loader.subrs.init  = 0;
          type1->num_subrs   = loader.num_subrs;
          type1->subrs_block = loader.subrs.block;
          type1->subrs       = loader.subrs.elements;
          type1->subrs_len   = loader.subrs.lengths;
        }
    
        if ( !loader.charstrings.init )
        {
          FT_ERROR(( "T1_Open_Face: no charstrings array in face!\n" ));
          error = T1_Err_Invalid_File_Format;
        }
    
        loader.charstrings.init  = 0;
        type1->charstrings_block = loader.charstrings.block;
        type1->charstrings       = loader.charstrings.elements;
        type1->charstrings_len   = loader.charstrings.lengths;
    
        /* we copy the glyph names `block' and `elements' fields; */
        /* the `lengths' field must be released later             */
        type1->glyph_names_block    = loader.glyph_names.block;
        type1->glyph_names          = (FT_String**)loader.glyph_names.elements;
        loader.glyph_names.block    = 0;
        loader.glyph_names.elements = 0;
    
        /* we must now build type1.encoding when we have a custom */
        /* array..                                                */
        if ( type1->encoding_type == t1_encoding_array )
        {
          FT_Int    charcode, index, min_char, max_char;
          FT_Byte*  char_name;
          FT_Byte*  glyph_name;
    
    
          /* OK, we do the following: for each element in the encoding  */
          /* table, look up the index of the glyph having the same name */
          /* the index is then stored in type1.encoding.char_index, and */
          /* a the name to type1.encoding.char_name                     */
    
          min_char = +32000;
          max_char = -32000;
    
          charcode = 0;
          for ( ; charcode < loader.encoding_table.max_elems; charcode++ )
          {
            type1->encoding.char_index[charcode] = 0;
            type1->encoding.char_name [charcode] = (char *)".notdef";
    
            char_name = loader.encoding_table.elements[charcode];
            if ( char_name )
              for ( index = 0; index < type1->num_glyphs; index++ )
              {
                glyph_name = (FT_Byte*)type1->glyph_names[index];
                if ( strcmp( (const char*)char_name,
                             (const char*)glyph_name ) == 0 )
                {
                  type1->encoding.char_index[charcode] = (FT_UShort)index;
                  type1->encoding.char_name [charcode] = (char*)glyph_name;
    
                  /* Change min/max encoded char only if glyph name is */
                  /* not /.notdef                                      */
                  if ( strcmp( (const char*)".notdef",
                               (const char*)glyph_name ) != 0 )
                  {
                    if (charcode < min_char) min_char = charcode;
                    if (charcode > max_char) max_char = charcode;
                  }
                  break;
                }
              }
          }
          type1->encoding.code_first = min_char;
          type1->encoding.code_last  = max_char;
          type1->encoding.num_chars  = loader.num_chars;
       }
    
      Exit:
        t1_done_loader( &loader );
        return error;
      }
    
    
    /* END */