src/cid/cidload.c - third_party/freetype2 - Git at Google

 /***************************************************************************/
 /*                                                                         */
 /*  cidload.c                                                              */
 /*                                                                         */
 /*    CID-keyed Type1 font loader (body).                                  */
 /*                                                                         */
 /*  Copyright 1996-2001, 2002 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 <ft2build.h>
 #include FT_INTERNAL_DEBUG_H
 #include FT_CONFIG_CONFIG_H
 #include FT_MULTIPLE_MASTERS_H
 #include FT_INTERNAL_TYPE1_TYPES_H

 #include "cidload.h"

 #include "ciderrs.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_cidload


   /* read a single offset */
   FT_LOCAL_DEF( FT_Long )
   cid_get_offset( FT_Byte**  start,
                   FT_Byte    offsize )
   {
     FT_Long   result;
     FT_Byte*  p = *start;


     for ( result = 0; offsize > 0; offsize-- )
     {
       result <<= 8;
       result  |= *p++;
     }

     *start = p;
     return result;
   }


   FT_LOCAL_DEF( void )
   cid_decrypt( FT_Byte*   buffer,
                FT_Offset  length,
                FT_UShort  seed )
   {
     while ( length > 0 )
     {
       FT_Byte  plain;


       plain     = (FT_Byte)( *buffer ^ ( seed >> 8 ) );
       seed      = (FT_UShort)( ( *buffer + seed ) * 52845U + 22719 );
       *buffer++ = plain;
       length--;
     }
   }


   /*************************************************************************/
   /*************************************************************************/
   /*****                                                               *****/
   /*****                    TYPE 1 SYMBOL PARSING                      *****/
   /*****                                                               *****/
   /*************************************************************************/
   /*************************************************************************/


   static FT_Error
   cid_load_keyword( CID_Face        face,
                     CID_Loader*     loader,
                     const T1_Field  keyword )
   {
     FT_Error      error;
     CID_Parser*   parser = &loader->parser;
     FT_Byte*      object;
     void*         dummy_object;
     CID_FaceInfo  cid = &face->cid;


     /* if the keyword has a dedicated callback, call it */
     if ( keyword->type == T1_FIELD_TYPE_CALLBACK )
     {
       keyword->reader( (FT_Face)face, parser );
       error = parser->root.error;
       goto Exit;
     }

     /* we must now compute the address of our target object */
     switch ( keyword->location )
     {
     case T1_FIELD_LOCATION_CID_INFO:
       object = (FT_Byte*)cid;
       break;

     case T1_FIELD_LOCATION_FONT_INFO:
       object = (FT_Byte*)&cid->font_info;
       break;

     default:
       {
         CID_FaceDict  dict;


         if ( parser->num_dict < 0 )
         {
           FT_ERROR(( "cid_load_keyword: invalid use of `%s'!\n",
                      keyword->ident ));
           error = CID_Err_Syntax_Error;
           goto Exit;
         }

         dict = cid->font_dicts + parser->num_dict;
         switch ( keyword->location )
         {
         case T1_FIELD_LOCATION_PRIVATE:
           object = (FT_Byte*)&dict->private_dict;
           break;

         default:
           object = (FT_Byte*)dict;
         }
       }
     }

     dummy_object = object;

     /* now, load the keyword data in the object's field(s) */
     if ( keyword->type == T1_FIELD_TYPE_INTEGER_ARRAY ||
          keyword->type == T1_FIELD_TYPE_FIXED_ARRAY   )
       error = cid_parser_load_field_table( &loader->parser, keyword,
                                     &dummy_object );
     else
       error = cid_parser_load_field( &loader->parser, keyword, &dummy_object );
   Exit:
     return error;
   }


   FT_CALLBACK_DEF( FT_Error )
   parse_font_bbox( CID_Face     face,
                    CID_Parser*  parser )
   {
     FT_Fixed  temp[4];
     FT_BBox*  bbox = &face->cid.font_bbox;


     (void)cid_parser_to_fixed_array( 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] );

     return CID_Err_Ok;       /* this is a callback function; */
                             /* we must return an error code */
   }


   FT_CALLBACK_DEF( FT_Error )
   parse_font_matrix( CID_Face     face,
                      CID_Parser*  parser )
   {
     FT_Matrix*    matrix;
     FT_Vector*    offset;
     CID_FaceDict  dict;
     FT_Face       root = (FT_Face)&face->root;
     FT_Fixed      temp[6];
     FT_Fixed      temp_scale;


     if ( parser->num_dict >= 0 )
     {
       dict   = face->cid.font_dicts + parser->num_dict;
       matrix = &dict->font_matrix;
       offset = &dict->font_offset;

       (void)cid_parser_to_fixed_array( 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( 0x10000L,
                                         FT_DivFix( temp_scale, 1000 ) ) );

       /* we need to scale the values by 1.0/temp[3] */
       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 font offsets are expressed in integer font units */
       offset->x  = temp[4] >> 16;
       offset->y  = temp[5] >> 16;
     }

     return CID_Err_Ok;       /* this is a callback function; */
                             /* we must return an error code */
   }


   FT_CALLBACK_DEF( FT_Error )
   parse_fd_array( CID_Face     face,
                   CID_Parser*  parser )
   {
     CID_FaceInfo  cid    = &face->cid;
     FT_Memory     memory = face->root.memory;
     FT_Error      error  = CID_Err_Ok;
     FT_Long       num_dicts;


     num_dicts = cid_parser_to_int( parser );

     if ( !cid->font_dicts )
     {
       FT_Int  n;


       if ( FT_NEW_ARRAY( cid->font_dicts, num_dicts ) )
         goto Exit;

       cid->num_dicts = (FT_UInt)num_dicts;

       /* don't forget to set a few defaults */
       for ( n = 0; n < cid->num_dicts; n++ )
       {
         CID_FaceDict  dict = cid->font_dicts + n;


         /* default value for lenIV */
         dict->private_dict.lenIV = 4;
       }
     }

   Exit:
     return error;
   }


   static
   const T1_FieldRec  cid_field_records[] =
   {

 #include "cidtoken.h"

     T1_FIELD_CALLBACK( "FontBBox", parse_font_bbox )
     T1_FIELD_CALLBACK( "FDArray", parse_fd_array )
     T1_FIELD_CALLBACK( "FontMatrix", parse_font_matrix )
     { 0, T1_FIELD_LOCATION_CID_INFO, T1_FIELD_TYPE_NONE, 0, 0, 0, 0, 0 }
   };


   static int
   is_alpha( char  c )
   {
     return ( ft_isalnum( (int)c ) ||
              c == '.'             ||
              c == '_'             );
   }


   static FT_Error
   cid_parse_dict( CID_Face     face,
                   CID_Loader*  loader,
                   FT_Byte*     base,
                   FT_Long      size )
   {
     CID_Parser*  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 `%ADOBeginFontDict' */
         if ( *cur == '%' && cur + 20 < limit &&
              ft_strncmp( (char*)cur, "%ADOBeginFontDict", 17 ) == 0 )
         {
           cur += 17;

           /* if /FDArray was found, then cid->num_dicts is > 0, and */
           /* we can start increasing parser->num_dict               */
           if ( face->cid.num_dicts > 0 )
             parser->num_dict++;
         }
         /* 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) cid_field_records;


             for (;;)
             {
               FT_Byte*  name;


               name = (FT_Byte*)keyword->ident;
               if ( !name )
                 break;

               if ( cur[0] == name[0]                          &&
                    len == (FT_Int)ft_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;
                   cid_parser_skip_spaces( parser );
                   parser->root.error = cid_load_keyword( face,
                                                          loader,
                                                          keyword );
                   if ( parser->root.error )
                     return parser->root.error;

                   cur = parser->root.cursor;
                   break;
                 }
               }
               keyword++;
             }
           }
         }
       }
     }
     return parser->root.error;
   }


   /* read the subrmap and the subrs of each font dict */
   static FT_Error
   cid_read_subrs( CID_Face  face )
   {
     CID_FaceInfo  cid    = &face->cid;
     FT_Memory     memory = face->root.memory;
     FT_Stream     stream = face->root.stream;
     FT_Error      error;
     FT_Int        n;
     CID_Subrs     subr;
     FT_UInt       max_offsets = 0;
     FT_ULong*     offsets = 0;


     if ( FT_NEW_ARRAY( face->subrs, cid->num_dicts ) )
       goto Exit;

     subr = face->subrs;
     for ( n = 0; n < cid->num_dicts; n++, subr++ )
     {
       CID_FaceDict  dict  = cid->font_dicts + n;
       FT_Int        lenIV = dict->private_dict.lenIV;
       FT_UInt       count, num_subrs = dict->num_subrs;
       FT_ULong      data_len;
       FT_Byte*      p;


       /* reallocate offsets array if needed */
       if ( num_subrs + 1 > max_offsets )
       {
         FT_UInt  new_max = ( num_subrs + 1 + 3 ) & -4;


         if ( FT_RENEW_ARRAY( offsets, max_offsets, new_max ) )
           goto Fail;

         max_offsets = new_max;
       }

       /* read the subrmap's offsets */
       if ( FT_STREAM_SEEK( cid->data_offset + dict->subrmap_offset ) ||
            FT_FRAME_ENTER( ( num_subrs + 1 ) * dict->sd_bytes )   )
         goto Fail;

       p = (FT_Byte*)stream->cursor;
       for ( count = 0; count <= num_subrs; count++ )
         offsets[count] = cid_get_offset( &p, (FT_Byte)dict->sd_bytes );

       FT_FRAME_EXIT();

       /* now, compute the size of subrs charstrings, */
       /* allocate, and read them                     */
       data_len = offsets[num_subrs] - offsets[0];

       if ( FT_NEW_ARRAY( subr->code, num_subrs + 1 ) ||
                FT_ALLOC( subr->code[0], data_len )   )
         goto Fail;

       if ( FT_STREAM_SEEK( cid->data_offset + offsets[0] ) ||
            FT_STREAM_READ( subr->code[0], data_len )  )
         goto Fail;

       /* set up pointers */
       for ( count = 1; count <= num_subrs; count++ )
       {
         FT_ULong  len;


         len               = offsets[count] - offsets[count - 1];
         subr->code[count] = subr->code[count - 1] + len;
       }

       /* decrypt subroutines, but only if lenIV >= 0 */
       if ( lenIV >= 0 )
       {
         for ( count = 0; count < num_subrs; count++ )
         {
           FT_ULong  len;


           len = offsets[count + 1] - offsets[count];
           cid_decrypt( subr->code[count], len, 4330 );
         }
       }

       subr->num_subrs = num_subrs;
     }

   Exit:
     FT_FREE( offsets );
     return error;

   Fail:
     if ( face->subrs )
     {
       for ( n = 0; n < cid->num_dicts; n++ )
       {
         if ( face->subrs[n].code )
           FT_FREE( face->subrs[n].code[0] );

         FT_FREE( face->subrs[n].code );
       }
       FT_FREE( face->subrs );
     }
     goto Exit;
   }


   static void
   t1_init_loader( CID_Loader*  loader,
                   CID_Face     face )
   {
     FT_UNUSED( face );

     FT_MEM_ZERO( loader, sizeof ( *loader ) );
   }


   static void
   t1_done_loader( CID_Loader*  loader )
   {
     CID_Parser*  parser = &loader->parser;


     /* finalize parser */
     cid_parser_done( parser );
   }


   FT_LOCAL_DEF( FT_Error )
   cid_face_open( CID_Face  face )
   {
     CID_Loader   loader;
     CID_Parser*  parser;
     FT_Error     error;


     t1_init_loader( &loader, face );

     parser = &loader.parser;
     error = cid_parser_new( parser, face->root.stream, face->root.memory,
                             (PSAux_Service)face->psaux );
     if ( error )
       goto Exit;

     error = cid_parse_dict( face, &loader,
                             parser->postscript,
                             parser->postscript_len );
     if ( error )
       goto Exit;

     face->cid.data_offset = loader.parser.data_offset;
     error = cid_read_subrs( face );

   Exit:
     t1_done_loader( &loader );
     return error;
   }


 /* END */
	/***************************************************************************/
	/* */
	/* cidload.c */
	/* */
	/* CID-keyed Type1 font loader (body). */
	/* */
	/* Copyright 1996-2001, 2002 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 <ft2build.h>
	#include FT_INTERNAL_DEBUG_H
	#include FT_CONFIG_CONFIG_H
	#include FT_MULTIPLE_MASTERS_H
	#include FT_INTERNAL_TYPE1_TYPES_H

	#include "cidload.h"

	#include "ciderrs.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_cidload


	/* read a single offset */
	FT_LOCAL_DEF( FT_Long )
	cid_get_offset( FT_Byte** start,
	FT_Byte offsize )
	{
	FT_Long result;
	FT_Byte* p = *start;


	for ( result = 0; offsize > 0; offsize-- )
	{
	result <<= 8;
	result \|= *p++;
	}

	*start = p;
	return result;
	}


	FT_LOCAL_DEF( void )
	cid_decrypt( FT_Byte* buffer,
	FT_Offset length,
	FT_UShort seed )
	{
	while ( length > 0 )
	{
	FT_Byte plain;


	plain = (FT_Byte)( *buffer ^ ( seed >> 8 ) );
	seed = (FT_UShort)( ( buffer + seed ) 52845U + 22719 );
	*buffer++ = plain;
	length--;
	}
	}


	/*************************************************************************/
	/*************************************************************************/
	/*** ***/
	/*** TYPE 1 SYMBOL PARSING ***/
	/*** ***/
	/*************************************************************************/
	/*************************************************************************/


	static FT_Error
	cid_load_keyword( CID_Face face,
	CID_Loader* loader,
	const T1_Field keyword )
	{
	FT_Error error;
	CID_Parser* parser = &loader->parser;
	FT_Byte* object;
	void* dummy_object;
	CID_FaceInfo cid = &face->cid;


	/* if the keyword has a dedicated callback, call it */
	if ( keyword->type == T1_FIELD_TYPE_CALLBACK )
	{
	keyword->reader( (FT_Face)face, parser );
	error = parser->root.error;
	goto Exit;
	}

	/* we must now compute the address of our target object */
	switch ( keyword->location )
	{
	case T1_FIELD_LOCATION_CID_INFO:
	object = (FT_Byte*)cid;
	break;

	case T1_FIELD_LOCATION_FONT_INFO:
	object = (FT_Byte*)&cid->font_info;
	break;

	default:
	{
	CID_FaceDict dict;


	if ( parser->num_dict < 0 )
	{
	FT_ERROR(( "cid_load_keyword: invalid use of `%s'!\n",
	keyword->ident ));
	error = CID_Err_Syntax_Error;
	goto Exit;
	}

	dict = cid->font_dicts + parser->num_dict;
	switch ( keyword->location )
	{
	case T1_FIELD_LOCATION_PRIVATE:
	object = (FT_Byte*)&dict->private_dict;
	break;

	default:
	object = (FT_Byte*)dict;
	}
	}
	}

	dummy_object = object;

	/* now, load the keyword data in the object's field(s) */
	if ( keyword->type == T1_FIELD_TYPE_INTEGER_ARRAY \|\|
	keyword->type == T1_FIELD_TYPE_FIXED_ARRAY )
	error = cid_parser_load_field_table( &loader->parser, keyword,
	&dummy_object );
	else
	error = cid_parser_load_field( &loader->parser, keyword, &dummy_object );
	Exit:
	return error;
	}


	FT_CALLBACK_DEF( FT_Error )
	parse_font_bbox( CID_Face face,
	CID_Parser* parser )
	{
	FT_Fixed temp[4];
	FT_BBox* bbox = &face->cid.font_bbox;


	(void)cid_parser_to_fixed_array( 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] );

	return CID_Err_Ok; /* this is a callback function; */
	/* we must return an error code */
	}


	FT_CALLBACK_DEF( FT_Error )
	parse_font_matrix( CID_Face face,
	CID_Parser* parser )
	{
	FT_Matrix* matrix;
	FT_Vector* offset;
	CID_FaceDict dict;
	FT_Face root = (FT_Face)&face->root;
	FT_Fixed temp[6];
	FT_Fixed temp_scale;


	if ( parser->num_dict >= 0 )
	{
	dict = face->cid.font_dicts + parser->num_dict;
	matrix = &dict->font_matrix;
	offset = &dict->font_offset;

	(void)cid_parser_to_fixed_array( 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( 0x10000L,
	FT_DivFix( temp_scale, 1000 ) ) );

	/* we need to scale the values by 1.0/temp[3] */
	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 font offsets are expressed in integer font units */
	offset->x = temp[4] >> 16;
	offset->y = temp[5] >> 16;
	}

	return CID_Err_Ok; /* this is a callback function; */
	/* we must return an error code */
	}


	FT_CALLBACK_DEF( FT_Error )
	parse_fd_array( CID_Face face,
	CID_Parser* parser )
	{
	CID_FaceInfo cid = &face->cid;
	FT_Memory memory = face->root.memory;
	FT_Error error = CID_Err_Ok;
	FT_Long num_dicts;


	num_dicts = cid_parser_to_int( parser );

	if ( !cid->font_dicts )
	{
	FT_Int n;


	if ( FT_NEW_ARRAY( cid->font_dicts, num_dicts ) )
	goto Exit;

	cid->num_dicts = (FT_UInt)num_dicts;

	/* don't forget to set a few defaults */
	for ( n = 0; n < cid->num_dicts; n++ )
	{
	CID_FaceDict dict = cid->font_dicts + n;


	/* default value for lenIV */
	dict->private_dict.lenIV = 4;
	}
	}

	Exit:
	return error;
	}


	static
	const T1_FieldRec cid_field_records[] =
	{

	#include "cidtoken.h"

	T1_FIELD_CALLBACK( "FontBBox", parse_font_bbox )
	T1_FIELD_CALLBACK( "FDArray", parse_fd_array )
	T1_FIELD_CALLBACK( "FontMatrix", parse_font_matrix )
	{ 0, T1_FIELD_LOCATION_CID_INFO, T1_FIELD_TYPE_NONE, 0, 0, 0, 0, 0 }
	};


	static int
	is_alpha( char c )
	{
	return ( ft_isalnum( (int)c ) \|\|
	c == '.' \|\|
	c == '_' );
	}


	static FT_Error
	cid_parse_dict( CID_Face face,
	CID_Loader* loader,
	FT_Byte* base,
	FT_Long size )
	{
	CID_Parser* 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 `%ADOBeginFontDict' */
	if ( *cur == '%' && cur + 20 < limit &&
	ft_strncmp( (char*)cur, "%ADOBeginFontDict", 17 ) == 0 )
	{
	cur += 17;

	/* if /FDArray was found, then cid->num_dicts is > 0, and */
	/* we can start increasing parser->num_dict */
	if ( face->cid.num_dicts > 0 )
	parser->num_dict++;
	}
	/* 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) cid_field_records;


	for (;;)
	{
	FT_Byte* name;


	name = (FT_Byte*)keyword->ident;
	if ( !name )
	break;

	if ( cur[0] == name[0] &&
	len == (FT_Int)ft_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;
	cid_parser_skip_spaces( parser );
	parser->root.error = cid_load_keyword( face,
	loader,
	keyword );
	if ( parser->root.error )
	return parser->root.error;

	cur = parser->root.cursor;
	break;
	}
	}
	keyword++;
	}
	}
	}
	}
	}
	return parser->root.error;
	}


	/* read the subrmap and the subrs of each font dict */
	static FT_Error
	cid_read_subrs( CID_Face face )
	{
	CID_FaceInfo cid = &face->cid;
	FT_Memory memory = face->root.memory;
	FT_Stream stream = face->root.stream;
	FT_Error error;
	FT_Int n;
	CID_Subrs subr;
	FT_UInt max_offsets = 0;
	FT_ULong* offsets = 0;


	if ( FT_NEW_ARRAY( face->subrs, cid->num_dicts ) )
	goto Exit;

	subr = face->subrs;
	for ( n = 0; n < cid->num_dicts; n++, subr++ )
	{
	CID_FaceDict dict = cid->font_dicts + n;
	FT_Int lenIV = dict->private_dict.lenIV;
	FT_UInt count, num_subrs = dict->num_subrs;
	FT_ULong data_len;
	FT_Byte* p;


	/* reallocate offsets array if needed */
	if ( num_subrs + 1 > max_offsets )
	{
	FT_UInt new_max = ( num_subrs + 1 + 3 ) & -4;


	if ( FT_RENEW_ARRAY( offsets, max_offsets, new_max ) )
	goto Fail;

	max_offsets = new_max;
	}

	/* read the subrmap's offsets */
	if ( FT_STREAM_SEEK( cid->data_offset + dict->subrmap_offset ) \|\|
	FT_FRAME_ENTER( ( num_subrs + 1 ) * dict->sd_bytes ) )
	goto Fail;

	p = (FT_Byte*)stream->cursor;
	for ( count = 0; count <= num_subrs; count++ )
	offsets[count] = cid_get_offset( &p, (FT_Byte)dict->sd_bytes );

	FT_FRAME_EXIT();

	/* now, compute the size of subrs charstrings, */
	/* allocate, and read them */
	data_len = offsets[num_subrs] - offsets[0];

	if ( FT_NEW_ARRAY( subr->code, num_subrs + 1 ) \|\|
	FT_ALLOC( subr->code[0], data_len ) )
	goto Fail;

	if ( FT_STREAM_SEEK( cid->data_offset + offsets[0] ) \|\|
	FT_STREAM_READ( subr->code[0], data_len ) )
	goto Fail;

	/* set up pointers */
	for ( count = 1; count <= num_subrs; count++ )
	{
	FT_ULong len;


	len = offsets[count] - offsets[count - 1];
	subr->code[count] = subr->code[count - 1] + len;
	}

	/* decrypt subroutines, but only if lenIV >= 0 */
	if ( lenIV >= 0 )
	{
	for ( count = 0; count < num_subrs; count++ )
	{
	FT_ULong len;


	len = offsets[count + 1] - offsets[count];
	cid_decrypt( subr->code[count], len, 4330 );
	}
	}

	subr->num_subrs = num_subrs;
	}

	Exit:
	FT_FREE( offsets );
	return error;

	Fail:
	if ( face->subrs )
	{
	for ( n = 0; n < cid->num_dicts; n++ )
	{
	if ( face->subrs[n].code )
	FT_FREE( face->subrs[n].code[0] );

	FT_FREE( face->subrs[n].code );
	}
	FT_FREE( face->subrs );
	}
	goto Exit;
	}


	static void
	t1_init_loader( CID_Loader* loader,
	CID_Face face )
	{
	FT_UNUSED( face );

	FT_MEM_ZERO( loader, sizeof ( *loader ) );
	}


	static void
	t1_done_loader( CID_Loader* loader )
	{
	CID_Parser* parser = &loader->parser;


	/* finalize parser */
	cid_parser_done( parser );
	}


	FT_LOCAL_DEF( FT_Error )
	cid_face_open( CID_Face face )
	{
	CID_Loader loader;
	CID_Parser* parser;
	FT_Error error;


	t1_init_loader( &loader, face );

	parser = &loader.parser;
	error = cid_parser_new( parser, face->root.stream, face->root.memory,
	(PSAux_Service)face->psaux );
	if ( error )
	goto Exit;

	error = cid_parse_dict( face, &loader,
	parser->postscript,
	parser->postscript_len );
	if ( error )
	goto Exit;

	face->cid.data_offset = loader.parser.data_offset;
	error = cid_read_subrs( face );

	Exit:
	t1_done_loader( &loader );
	return error;
	}


	/* END */