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[cff] Add support for `FSType'. 

* include/freetype/internal/cfftypes.h (CFF_FontRec): Add
`font_extra' entry.

* src/cff/cffdrivr.c (cff_ps_get_font_extra): New function to
retrieve FSType info from the embedded PostScript data.
(cff_service_ps_info): Register function.

* src/cff/cffload.c (cff_font_done): Free `font_extra'.
This commit is contained in:
John Tytgat 2017-10-04 22:46:36 +02:00 committed by Werner Lemberg
parent 4a5c0b1456
commit 1df35d94c7
4 changed files with 100 additions and 1 deletions
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13
ChangeLog
View File

@ -1,3 +1,16 @@
2017-10-04 John Tytgat <John.Tytgat@esko.com>
[cff] Add support for `FSType'.
* include/freetype/internal/cfftypes.h (CFF_FontRec): Add
`font_extra' entry.
* src/cff/cffdrivr.c (cff_ps_get_font_extra): New function to
retrieve FSType info from the embedded PostScript data.
(cff_service_ps_info): Register function.
* src/cff/cffload.c (cff_font_done): Free `font_extra'.
2017-09-30 Alexei Podtelezhnikov <apodtele@gmail.com>
Signedness fixes in bitmap presetting.

4
include/freetype/internal/cfftypes.h
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@ -27,6 +27,7 @@
#include FT_INTERNAL_SERVICE_H
#include FT_SERVICE_POSTSCRIPT_CMAPS_H
#include FT_INTERNAL_POSTSCRIPT_HINTS_H
#include FT_INTERNAL_TYPE1_TYPES_H
FT_BEGIN_HEADER
@ -397,6 +398,9 @@ FT_BEGIN_HEADER
/* since version 2.7.1 */
CFF_VStoreRec vstore; /* parsed vstore structure */
/* since version 2.8.2 */
PS_FontExtraRec* font_extra;
} CFF_FontRec;

82
src/cff/cffdrivr.c
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@ -496,11 +496,91 @@
}
static FT_Error
cff_ps_get_font_extra( CFF_Face face,
PS_FontExtraRec* afont_extra )
{
CFF_Font cff = (CFF_Font)face->extra.data;
FT_Error error = FT_Err_Ok;
if ( cff && cff->font_extra == NULL )
{
CFF_FontRecDict dict = &cff->top_font.font_dict;
PS_FontExtraRec* font_extra = NULL;
FT_Memory memory = face->root.memory;
FT_String* embedded_postscript;
if ( FT_ALLOC( font_extra, sizeof ( *font_extra ) ) )
goto Fail;
font_extra->fs_type = 0u;
embedded_postscript = cff_index_get_sid_string(
cff,
dict->embedded_postscript );
if ( embedded_postscript )
{
FT_String* start_fstype;
FT_String* start_def;
/* Identify the XYZ integer in `/FSType XYZ def' substring. */
if ( ( start_fstype = ft_strstr( embedded_postscript,
"/FSType" ) ) != NULL &&
( start_def = ft_strstr( start_fstype +
sizeof ( "/FSType" ) - 1,
"def" ) ) != NULL )
{
FT_String* s;
for ( s = start_fstype + sizeof ( "/FSType" ) - 1;
s != start_def;
s++ )
{
if ( *s >= '0' && *s <= '9' )
{
FT_UShort prev_fs_type;
prev_fs_type = font_extra->fs_type;
font_extra->fs_type = 10 * font_extra->fs_type + *s - '0';
if ( font_extra->fs_type < prev_fs_type )
{
/* Overflow - ignore the FSType value. */
font_extra->fs_type = 0U;
break;
}
}
else if ( *s != ' ' && *s != '\n' && *s != '\r' )
{
/* Non-whitespace character between `/FSType' and next `def' */
/* - ignore the FSType value. */
font_extra->fs_type = 0U;
break;
}
}
}
}
cff->font_extra = font_extra;
}
if ( cff )
*afont_extra = *cff->font_extra;
Fail:
return error;
}
FT_DEFINE_SERVICE_PSINFOREC(
cff_service_ps_info,
(PS_GetFontInfoFunc) cff_ps_get_font_info, /* ps_get_font_info */
(PS_GetFontExtraFunc) NULL, /* ps_get_font_extra */
(PS_GetFontExtraFunc) cff_ps_get_font_extra, /* ps_get_font_extra */
(PS_HasGlyphNamesFunc) cff_ps_has_glyph_names, /* ps_has_glyph_names */
/* unsupported with CFF fonts */
(PS_GetFontPrivateFunc)NULL, /* ps_get_font_private */

2
src/cff/cffload.c
View File

@ -2539,6 +2539,8 @@
font->cf2_instance.finalizer( font->cf2_instance.data );
FT_FREE( font->cf2_instance.data );
}
FT_FREE( font->font_extra );
}