kc3-lang/freetype/src/cff/t2objs.c

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• Hash : deb4e983
  Author :
  Date : 2000-06-29T03:14:25
  

  Formatting... Preprocessor lines now always start the line. Improved error handling in `base' module. Fixed a out-of-bounds error in ttgload.

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• src/cff/t2objs.c

• /***************************************************************************/
  /*                                                                         */
  /*  t2objs.c                                                               */
  /*                                                                         */
  /*    OpenType objects manager (body).                                     */
  /*                                                                         */
  /*  Copyright 1996-2000 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.                                        */
  /*                                                                         */
  /***************************************************************************/
  
  
  #include <freetype/internal/ftdebug.h>
  #include <freetype/internal/ftcalc.h>
  #include <freetype/internal/ftstream.h>
  #include <freetype/ttnameid.h>
  #include <freetype/tttags.h>
  
  #include <freetype/internal/sfnt.h>
  #include <freetype/internal/psnames.h>
  #include <t2objs.h>
  
  #include <t2load.h>
  #include <freetype/internal/t2errors.h>
  
  
    /*************************************************************************/
    /*                                                                       */
    /* 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_t2objs
  
  
    /*************************************************************************/
    /*                                                                       */
    /*                           FACE  FUNCTIONS                             */
    /*                                                                       */
    /*************************************************************************/
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Function>                                                            */
    /*    T2_Init_Face                                                       */
    /*                                                                       */
    /* <Description>                                                         */
    /*    Initializes a given OpenType face object.                          */
    /*                                                                       */
    /* <Input>                                                               */
    /*    stream     :: The source font stream.                              */
    /*                                                                       */
    /*    face_index :: The index of the font face in the resource.          */
    /*                                                                       */
    /*    num_params :: Number of additional generic parameters.  Ignored.   */
    /*                                                                       */
    /*    params     :: Additional generic parameters.  Ignored.             */
    /*                                                                       */
    /* <InOut>                                                               */
    /*    face       :: The newly built face object.                         */
    /*                                                                       */
    /* <Return>                                                              */
    /*    FreeType error code.  0 means success.                             */
    /*                                                                       */
    LOCAL_DEF
    FT_Error  T2_Init_Face( FT_Stream      stream,
                            T2_Face        face,
                            FT_Int         face_index,
                            FT_Int         num_params,
                            FT_Parameter*  params )
    {
      FT_Error         error;
      SFNT_Interface*  sfnt;
  
      sfnt = (SFNT_Interface*)FT_Get_Module_Interface(
               face->root.driver->root.library, "sfnt" );
      if ( !sfnt )
        goto Bad_Format;
  
      /* create input stream from resource */
      if ( FILE_Seek( 0 ) )
        goto Exit;
  
      /* check that we have a valid OpenType file */
      error = sfnt->init_face( stream, face, face_index, num_params, params );
      if ( error )
        goto Exit;
  
      if ( face->format_tag != 0x4f54544fL )     /* OpenType/CFF font */
      {
        FT_TRACE2(( "[not a valid OpenType/CFF font]\n" ));
        goto Bad_Format;
      }
  
      /* If we are performing a simple font format check, exit immediately */
      if ( face_index < 0 )
        return T2_Err_Ok;
  
      /* Load font directory */
      error = sfnt->load_face( stream, face, face_index, num_params, params );
      if ( error )
        goto Exit;
  
      /* now, load the CFF part of the file.. */
      error = face->goto_table( face, TTAG_CFF, stream, 0 );
      if ( error )
        goto Exit;
  
      {
        CFF_Font*  cff;
        FT_Memory  memory = face->root.memory;
        FT_Face    root;
  
  
        if ( ALLOC( cff, sizeof ( *cff ) ) )
          goto Exit;
  
        face->extra.data = cff;
        error = T2_Load_CFF_Font( stream, face_index, cff );
        if ( error )
          goto Exit;
  
        /* Complement the root flags with some interesting information. */
        /* note that for OpenType/CFF, there is no need to do this, but */
        /* this will be necessary for pure CFF fonts through.           */
        root = &face->root;
      }
  
    Exit:
      return error;
  
    Bad_Format:
      error = FT_Err_Unknown_File_Format;
      goto Exit;
    }
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Function>                                                            */
    /*    T2_Done_Face                                                       */
    /*                                                                       */
    /* <Description>                                                         */
    /*    Finalizes a given face object.                                     */
    /*                                                                       */
    /* <Input>                                                               */
    /*    face :: A pointer to the face object to destroy.                   */
    /*                                                                       */
    LOCAL_DEF
    void  T2_Done_Face( T2_Face  face )
    {
      FT_Memory  memory = face->root.memory;
  
      SFNT_Interface*  sfnt = face->sfnt;
  
      if ( sfnt )
        sfnt->done_face( face );
  
      {
        CFF_Font*  cff = (CFF_Font*)face->extra.data;
  
  
        if ( cff )
        {
          T2_Done_CFF_Font( cff );
          FREE( face->extra.data );
        }
      }
    }
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Function>                                                            */
    /*    T2_Init_Driver                                                     */
    /*                                                                       */
    /* <Description>                                                         */
    /*    Initializes a given OpenType driver object.                        */
    /*                                                                       */
    /* <Input>                                                               */
    /*    driver :: A handle to the target driver object.                    */
    /*                                                                       */
    /* <Return>                                                              */
    /*    FreeType error code.  0 means success.                             */
    /*                                                                       */
    LOCAL_FUNC
    FT_Error  T2_Init_Driver( T2_Driver  driver )
    {
      /* init extension registry if needed */
  #ifdef TT_CONFIG_OPTION_EXTEND_ENGINE
      return TT_Init_Extensions( driver );
  #else
      UNUSED( driver );
      return T2_Err_Ok;
  #endif
    }
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Function>                                                            */
    /*    T2_Done_Driver                                                     */
    /*                                                                       */
    /* <Description>                                                         */
    /*    Finalizes a given OpenType driver.                                 */
    /*                                                                       */
    /* <Input>                                                               */
    /*    driver :: A handle to the target OpenType driver.                  */
    /*                                                                       */
    LOCAL_FUNC
    void  T2_Done_Driver( T2_Driver  driver )
    {
      /* destroy extensions registry if needed */
  #ifdef TT_CONFIG_OPTION_EXTEND_ENGINE
      TT_Done_Extensions( driver );
  #else
      UNUSED( driver );
  #endif
    }
  
  
  /* END */
  

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