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[cff] Code shuffling. 

* src/cff/cfftypes.h (CFF_Font): Add `library' and `base_offset'
fields.

* src/cff/cffload.c (cff_subfont_load): Change last argument to
`CFF_Font'
Split off parsing of private dictionary into...
(cff_load_private_dict): ...this new function.
(cff_font_load): Updated.
This commit is contained in:
Dave Arnold 2016-12-15 00:00:45 +01:00 committed by Werner Lemberg
parent 0918325e3f
commit 41533b958c
3 changed files with 94 additions and 49 deletions
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14
ChangeLog
View File

@ -1,3 +1,17 @@
2016-12-15 Dave Arnold <darnold@adobe.com>
Werner Lemberg <wl@gnu.org>
[cff] Code shuffling.
* src/cff/cfftypes.h (CFF_Font): Add `library' and `base_offset'
fields.
* src/cff/cffload.c (cff_subfont_load): Change last argument to
`CFF_Font'
Split off parsing of private dictionary into...
(cff_load_private_dict): ...this new function.
(cff_font_load): Updated.
2016-12-14 Werner Lemberg <wl@gnu.org>
[sfnt, truetype] Add framework for Metrics Variations service.

127
src/cff/cffload.c
View File

@ -1333,25 +1333,77 @@
static FT_Error
cff_subfont_load( CFF_SubFont font,
cff_load_private_dict( CFF_Font font,
CFF_SubFont subfont )
{
FT_Error error = FT_Err_Ok;
CFF_ParserRec parser;
CFF_FontRecDict top = &subfont->font_dict;
CFF_Private priv = &subfont->private_dict;
FT_Stream stream = font->stream;
/* parse the private dictionary, if any */
if ( !top->private_offset || !top->private_size )
goto Exit;
/* set defaults */
FT_ZERO( priv );
priv->blue_shift = 7;
priv->blue_fuzz = 1;
priv->lenIV = -1;
priv->expansion_factor = (FT_Fixed)( 0.06 * 0x10000L );
priv->blue_scale = (FT_Fixed)( 0.039625 * 0x10000L * 1000 );
cff_parser_init( &parser,
CFF_CODE_PRIVATE,
priv,
font->library,
top->num_designs,
top->num_axes );
if ( FT_STREAM_SEEK( font->base_offset + top->private_offset ) ||
FT_FRAME_ENTER( top->private_size ) )
goto Exit;
FT_TRACE4(( " private dictionary:\n" ));
error = cff_parser_run( &parser,
(FT_Byte*)stream->cursor,
(FT_Byte*)stream->limit );
FT_FRAME_EXIT();
if ( error )
goto Exit;
/* ensure that `num_blue_values' is even */
priv->num_blue_values &= ~1;
Exit:
return error;
}
static FT_Error
cff_subfont_load( CFF_SubFont subfont,
CFF_Index idx,
FT_UInt font_index,
FT_Stream stream,
FT_ULong base_offset,
FT_Library library )
CFF_Font font )
{
FT_Error error;
CFF_ParserRec parser;
FT_Byte* dict = NULL;
FT_ULong dict_len;
CFF_FontRecDict top = &font->font_dict;
CFF_Private priv = &font->private_dict;
CFF_FontRecDict top = &subfont->font_dict;
CFF_Private priv = &subfont->private_dict;
cff_parser_init( &parser,
CFF_CODE_TOPDICT,
&font->font_dict,
library,
&subfont->font_dict,
font->library,
0,
0 );
@ -1396,39 +1448,9 @@
goto Exit;
/* parse the private dictionary, if any */
if ( top->private_offset && top->private_size )
{
/* set defaults */
FT_ZERO( priv );
priv->blue_shift = 7;
priv->blue_fuzz = 1;
priv->lenIV = -1;
priv->expansion_factor = (FT_Fixed)( 0.06 * 0x10000L );
priv->blue_scale = (FT_Fixed)( 0.039625 * 0x10000L * 1000 );
cff_parser_init( &parser,
CFF_CODE_PRIVATE,
priv,
library,
top->num_designs,
top->num_axes );
if ( FT_STREAM_SEEK( base_offset + font->font_dict.private_offset ) ||
FT_FRAME_ENTER( font->font_dict.private_size ) )
goto Exit;
FT_TRACE4(( " private dictionary:\n" ));
error = cff_parser_run( &parser,
(FT_Byte*)stream->cursor,
(FT_Byte*)stream->limit );
FT_FRAME_EXIT();
if ( error )
goto Exit;
/* ensure that `num_blue_values' is even */
priv->num_blue_values &= ~1;
}
error = cff_load_private_dict( font, subfont );
if ( error )
goto Exit;
/* read the local subrs, if any */
if ( priv->local_subrs_offset )
@ -1437,12 +1459,12 @@
priv->local_subrs_offset ) )
goto Exit;
error = cff_index_init( &font->local_subrs_index, stream, 1 );
error = cff_index_init( &subfont->local_subrs_index, stream, 1 );
if ( error )
goto Exit;
error = cff_index_get_pointers( &font->local_subrs_index,
&font->local_subrs, NULL, NULL );
error = cff_index_get_pointers( &subfont->local_subrs_index,
&subfont->local_subrs, NULL, NULL );
if ( error )
goto Exit;
}
@ -1495,10 +1517,13 @@
FT_ZERO( font );
FT_ZERO( &string_index );
font->stream = stream;
font->memory = memory;
dict = &font->top_font.font_dict;
base_offset = FT_STREAM_POS();
dict = &font->top_font.font_dict;
base_offset = FT_STREAM_POS();
font->library = library;
font->stream = stream;
font->memory = memory;
font->base_offset = base_offset;
/* read CFF font header */
if ( FT_STREAM_READ_FIELDS( cff_header_fields, font ) )
@ -1577,7 +1602,7 @@
subfont_index,
stream,
base_offset,
library );
font );
if ( error )
goto Exit;
@ -1625,8 +1650,12 @@
{
sub = font->subfonts[idx];
FT_TRACE4(( "parsing subfont %u\n", idx ));
error = cff_subfont_load( sub, &fd_index, idx,
stream, base_offset, library );
error = cff_subfont_load( sub,
&fd_index,
idx,
stream,
base_offset,
font );
if ( error )
goto Fail_CID;
}

2
src/cff/cfftypes.h
View File

@ -224,8 +224,10 @@ FT_BEGIN_HEADER
typedef struct CFF_FontRec_
{
FT_Library library;
FT_Stream stream;
FT_Memory memory;
FT_ULong base_offset; /* offset to start of CFF */
FT_UInt num_faces;
FT_UInt num_glyphs;