#include <ft2build.h>

#include FT_INTERNAL_CALC_H

#include FT_INTERNAL_DEBUG_H

#include FT_INTERNAL_STREAM_H

#include FT_TRUETYPE_IDS_H

#include FT_DRIVER_H

#include "t1gload.h"

#include "t1load.h"

#include "t1errors.h"

#ifndef T1_CONFIG_OPTION_NO_AFM

#include "t1afm.h"

#endif

#include FT_SERVICE_POSTSCRIPT_CMAPS_H

#include FT_INTERNAL_POSTSCRIPT_AUX_H

#undef  FT_COMPONENT

  static PSH_Globals_Funcs

  T1_Size_Get_Globals_Funcs( T1_Size  size )

  {

    T1_Face           face     = (T1_Face)size->root.face;

    PSHinter_Service  pshinter = (PSHinter_Service)face->pshinter;

    FT_Module         module;

    module = FT_Get_Module( size->root.face->driver->root.library,

                            "pshinter" );

    return ( module && pshinter && pshinter->get_globals_funcs )

           ? pshinter->get_globals_funcs( module )

           : 0;

  }

  FT_LOCAL_DEF( void )

  T1_Size_Done( FT_Size  t1size )          /* T1_Size */

  {

    T1_Size  size = (T1_Size)t1size;

    if ( t1size->internal->module_data )

    {

      PSH_Globals_Funcs  funcs;

      funcs = T1_Size_Get_Globals_Funcs( size );

      if ( funcs )

        funcs->destroy( (PSH_Globals)t1size->internal->module_data );

      t1size->internal->module_data = NULL;

    }

  }

  FT_LOCAL_DEF( FT_Error )

  T1_Size_Init( FT_Size  t1size )      /* T1_Size */

  {

    T1_Size            size  = (T1_Size)t1size;

    FT_Error           error = FT_Err_Ok;

    PSH_Globals_Funcs  funcs = T1_Size_Get_Globals_Funcs( size );

    if ( funcs )

    {

      PSH_Globals  globals;

      T1_Face      face = (T1_Face)size->root.face;

      error = funcs->create( size->root.face->memory,

                             &face->type1.private_dict, &globals );

      if ( !error )

        t1size->internal->module_data = globals;

    }

    return error;

  }

  FT_LOCAL_DEF( FT_Error )

  T1_Size_Request( FT_Size          t1size,     /* T1_Size */

                   FT_Size_Request  req )

  {

    T1_Size            size  = (T1_Size)t1size;

    PSH_Globals_Funcs  funcs = T1_Size_Get_Globals_Funcs( size );

    FT_Request_Metrics( size->root.face, req );

    if ( funcs )

      funcs->set_scale( (PSH_Globals)t1size->internal->module_data,

                        size->root.metrics.x_scale,

                        size->root.metrics.y_scale,

                        0, 0 );

    return FT_Err_Ok;

  }

  FT_LOCAL_DEF( void )

  T1_GlyphSlot_Done( FT_GlyphSlot  slot )

  {

    slot->internal->glyph_hints = NULL;

  }

  FT_LOCAL_DEF( FT_Error )

  T1_GlyphSlot_Init( FT_GlyphSlot  slot )

  {

    T1_Face           face;

    PSHinter_Service  pshinter;

    face     = (T1_Face)slot->face;

    pshinter = (PSHinter_Service)face->pshinter;

    if ( pshinter )

    {

      FT_Module  module;

      module = FT_Get_Module( slot->face->driver->root.library,

                              "pshinter" );

      if ( module )

      {

        T1_Hints_Funcs  funcs;

        funcs = pshinter->get_t1_funcs( module );

        slot->internal->glyph_hints = (void*)funcs;

      }

    }

    return 0;

  }

  FT_LOCAL_DEF( void )

  T1_Face_Done( FT_Face  t1face )         /* T1_Face */

  {

    T1_Face    face = (T1_Face)t1face;

    FT_Memory  memory;

    T1_Font    type1;

    if ( !face )

      return;

    memory = face->root.memory;

    type1  = &face->type1;

#ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT

    /* release multiple masters information */

    FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) );

    if ( face->buildchar )

    {

      FT_FREE( face->buildchar );

      face->buildchar     = NULL;

      face->len_buildchar = 0;

    }

    T1_Done_Blend( face );

    face->blend = NULL;

#endif

    /* release font info strings */

    {

      PS_FontInfo  info = &type1->font_info;

      FT_FREE( info->version );

      FT_FREE( info->notice );

      FT_FREE( info->full_name );

      FT_FREE( info->family_name );

      FT_FREE( info->weight );

    }

    /* release top dictionary */

    FT_FREE( type1->charstrings_len );

    FT_FREE( type1->charstrings );

    FT_FREE( type1->glyph_names );

    FT_FREE( type1->subrs );

    FT_FREE( type1->subrs_len );

    ft_hash_num_free( type1->subrs_hash, memory );

    FT_FREE( type1->subrs_hash );

    FT_FREE( type1->subrs_block );

    FT_FREE( type1->charstrings_block );

    FT_FREE( type1->glyph_names_block );

    FT_FREE( type1->encoding.char_index );

    FT_FREE( type1->encoding.char_name );

    FT_FREE( type1->font_name );

#ifndef T1_CONFIG_OPTION_NO_AFM

    /* release afm data if present */

    if ( face->afm_data )

      T1_Done_Metrics( memory, (AFM_FontInfo)face->afm_data );

#endif

    /* release unicode map, if any */

#if 0

    FT_FREE( face->unicode_map_rec.maps );

    face->unicode_map_rec.num_maps = 0;

    face->unicode_map              = NULL;

#endif

    face->root.family_name = NULL;

    face->root.style_name  = NULL;

  }

  FT_LOCAL_DEF( FT_Error )

  T1_Face_Init( FT_Stream      stream,

                FT_Face        t1face,          /* T1_Face */

                FT_Int         face_index,

                FT_Int         num_params,

                FT_Parameter*  params )

  {

    T1_Face             face = (T1_Face)t1face;

    FT_Error            error;

    FT_Service_PsCMaps  psnames;

    PSAux_Service       psaux;

    T1_Font             type1 = &face->type1;

    PS_FontInfo         info = &type1->font_info;

    FT_UNUSED( num_params );

    FT_UNUSED( params );

    FT_UNUSED( stream );

    face->root.num_faces = 1;

    FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS );

    face->psnames = psnames;

    face->psaux = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),

                                           "psaux" );

    psaux = (PSAux_Service)face->psaux;

    if ( !psaux )

    {

      FT_ERROR(( "T1_Face_Init: cannot access `psaux' module\n" ));

      error = FT_THROW( Missing_Module );

      goto Exit;

    }

    face->pshinter = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),

                                              "pshinter" );

    FT_TRACE2(( "Type 1 driver\n" ));

    /* open the tokenizer; this will also check the font format */

    error = T1_Open_Face( face );

    if ( error )

      goto Exit;

    /* if we just wanted to check the format, leave successfully now */

    if ( face_index < 0 )

      goto Exit;

    /* check the face index */

    if ( ( face_index & 0xFFFF ) > 0 )

    {

      FT_ERROR(( "T1_Face_Init: invalid face index\n" ));

      error = FT_THROW( Invalid_Argument );

      goto Exit;

    }

    /* now load the font program into the face object */

    /* initialize the face object fields */

    /* set up root face fields */

    {

      FT_Face  root = (FT_Face)&face->root;

      root->num_glyphs = type1->num_glyphs;

      root->face_index = 0;

      root->face_flags |= FT_FACE_FLAG_SCALABLE    |

                          FT_FACE_FLAG_HORIZONTAL  |

                          FT_FACE_FLAG_GLYPH_NAMES |

                          FT_FACE_FLAG_HINTER;

      if ( info->is_fixed_pitch )

        root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;

      if ( face->blend )

        root->face_flags |= FT_FACE_FLAG_MULTIPLE_MASTERS;

      /* The following code to extract the family and the style is very   */

      /* simplistic and might get some things wrong.  For a full-featured */

      /* algorithm you might have a look at the whitepaper given at       */

      /*                                                                  */

      /*   https://blogs.msdn.com/text/archive/2007/04/23/wpf-font-selection-model.aspx */

      /* get style name -- be careful, some broken fonts only */

      /* have a `/FontName' dictionary entry!                 */

      root->family_name = info->family_name;

      root->style_name  = NULL;

      if ( root->family_name )

      {

        char*  full   = info->full_name;

        char*  family = root->family_name;

        if ( full )

        {

          FT_Bool  the_same = TRUE;

          while ( *full )

          {

            if ( *full == *family )

            {

              family++;

              full++;

            }

            else

            {

              if ( *full == ' ' || *full == '-' )

                full++;

              else if ( *family == ' ' || *family == '-' )

                family++;

              else

              {

                the_same = FALSE;

                if ( !*family )

                  root->style_name = full;

                break;

              }

            }

          }

          if ( the_same )

            root->style_name = (char *)"Regular";

        }

      }

      else

      {

        /* do we have a `/FontName'? */

        if ( type1->font_name )

          root->family_name = type1->font_name;

      }

      if ( !root->style_name )

      {

        if ( info->weight )

          root->style_name = info->weight;

        else

          /* assume `Regular' style because we don't know better */

          root->style_name = (char *)"Regular";

      }

      /* compute style flags */

      root->style_flags = 0;

      if ( info->italic_angle )

        root->style_flags |= FT_STYLE_FLAG_ITALIC;

      if ( info->weight )

      {

        if ( !ft_strcmp( info->weight, "Bold"  ) ||

             !ft_strcmp( info->weight, "Black" ) )

          root->style_flags |= FT_STYLE_FLAG_BOLD;

      }

      /* no embedded bitmap support */

      root->num_fixed_sizes = 0;

      root->available_sizes = NULL;

      root->bbox.xMin =   type1->font_bbox.xMin            >> 16;

      root->bbox.yMin =   type1->font_bbox.yMin            >> 16;

      /* no `U' suffix here to 0xFFFF! */

      root->bbox.xMax = ( type1->font_bbox.xMax + 0xFFFF ) >> 16;

      root->bbox.yMax = ( type1->font_bbox.yMax + 0xFFFF ) >> 16;

      /* Set units_per_EM if we didn't set it in t1_parse_font_matrix. */

      if ( !root->units_per_EM )

        root->units_per_EM = 1000;

      root->ascender  = (FT_Short)( root->bbox.yMax );

      root->descender = (FT_Short)( root->bbox.yMin );

      root->height = (FT_Short)( ( root->units_per_EM * 12 ) / 10 );

      if ( root->height < root->ascender - root->descender )

        root->height = (FT_Short)( root->ascender - root->descender );

      /* now compute the maximum advance width */

      root->max_advance_width =

        (FT_Short)( root->bbox.xMax );

      {

        FT_Pos  max_advance;

        error = T1_Compute_Max_Advance( face, &max_advance );

        /* in case of error, keep the standard width */

        if ( !error )

          root->max_advance_width = (FT_Short)FIXED_TO_INT( max_advance );

        else

          error = FT_Err_Ok;   /* clear error */

      }

      root->max_advance_height = root->height;

      root->underline_position  = (FT_Short)info->underline_position;

      root->underline_thickness = (FT_Short)info->underline_thickness;

    }

    {

      FT_Face  root = &face->root;

      if ( psnames )

      {

        FT_CharMapRec    charmap;

        T1_CMap_Classes  cmap_classes = psaux->t1_cmap_classes;

        FT_CMap_Class    clazz;

        charmap.face = root;

        /* first of all, try to synthesize a Unicode charmap */