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-rw-r--r--src/3rdparty/freetype/src/cff/cffgload.c2481
1 files changed, 39 insertions, 2442 deletions
diff --git a/src/3rdparty/freetype/src/cff/cffgload.c b/src/3rdparty/freetype/src/cff/cffgload.c
index 5f57403e22..c58471ce86 100644
--- a/src/3rdparty/freetype/src/cff/cffgload.c
+++ b/src/3rdparty/freetype/src/cff/cffgload.c
@@ -4,7 +4,7 @@
/* */
/* OpenType Glyph Loader (body). */
/* */
-/* Copyright 1996-2015 by */
+/* Copyright 1996-2018 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -20,13 +20,13 @@
#include FT_INTERNAL_DEBUG_H
#include FT_INTERNAL_STREAM_H
#include FT_INTERNAL_SFNT_H
+#include FT_INTERNAL_CALC_H
+#include FT_INTERNAL_POSTSCRIPT_AUX_H
#include FT_OUTLINE_H
-#include FT_CFF_DRIVER_H
+#include FT_DRIVER_H
-#include "cffobjs.h"
#include "cffload.h"
#include "cffgload.h"
-#include "cf2ft.h" /* for cf2_decoder_parse_charstrings */
#include "cfferrs.h"
@@ -41,618 +41,6 @@
#define FT_COMPONENT trace_cffgload
-#ifdef CFF_CONFIG_OPTION_OLD_ENGINE
-
- typedef enum CFF_Operator_
- {
- cff_op_unknown = 0,
-
- cff_op_rmoveto,
- cff_op_hmoveto,
- cff_op_vmoveto,
-
- cff_op_rlineto,
- cff_op_hlineto,
- cff_op_vlineto,
-
- cff_op_rrcurveto,
- cff_op_hhcurveto,
- cff_op_hvcurveto,
- cff_op_rcurveline,
- cff_op_rlinecurve,
- cff_op_vhcurveto,
- cff_op_vvcurveto,
-
- cff_op_flex,
- cff_op_hflex,
- cff_op_hflex1,
- cff_op_flex1,
-
- cff_op_endchar,
-
- cff_op_hstem,
- cff_op_vstem,
- cff_op_hstemhm,
- cff_op_vstemhm,
-
- cff_op_hintmask,
- cff_op_cntrmask,
- cff_op_dotsection, /* deprecated, acts as no-op */
-
- cff_op_abs,
- cff_op_add,
- cff_op_sub,
- cff_op_div,
- cff_op_neg,
- cff_op_random,
- cff_op_mul,
- cff_op_sqrt,
-
- cff_op_blend,
-
- cff_op_drop,
- cff_op_exch,
- cff_op_index,
- cff_op_roll,
- cff_op_dup,
-
- cff_op_put,
- cff_op_get,
- cff_op_store,
- cff_op_load,
-
- cff_op_and,
- cff_op_or,
- cff_op_not,
- cff_op_eq,
- cff_op_ifelse,
-
- cff_op_callsubr,
- cff_op_callgsubr,
- cff_op_return,
-
- /* Type 1 opcodes: invalid but seen in real life */
- cff_op_hsbw,
- cff_op_closepath,
- cff_op_callothersubr,
- cff_op_pop,
- cff_op_seac,
- cff_op_sbw,
- cff_op_setcurrentpoint,
-
- /* do not remove */
- cff_op_max
-
- } CFF_Operator;
-
-
-#define CFF_COUNT_CHECK_WIDTH 0x80
-#define CFF_COUNT_EXACT 0x40
-#define CFF_COUNT_CLEAR_STACK 0x20
-
- /* count values which have the `CFF_COUNT_CHECK_WIDTH' flag set are */
- /* used for checking the width and requested numbers of arguments */
- /* only; they are set to zero afterwards */
-
- /* the other two flags are informative only and unused currently */
-
- static const FT_Byte cff_argument_counts[] =
- {
- 0, /* unknown */
-
- 2 | CFF_COUNT_CHECK_WIDTH | CFF_COUNT_EXACT, /* rmoveto */
- 1 | CFF_COUNT_CHECK_WIDTH | CFF_COUNT_EXACT,
- 1 | CFF_COUNT_CHECK_WIDTH | CFF_COUNT_EXACT,
-
- 0 | CFF_COUNT_CLEAR_STACK, /* rlineto */
- 0 | CFF_COUNT_CLEAR_STACK,
- 0 | CFF_COUNT_CLEAR_STACK,
-
- 0 | CFF_COUNT_CLEAR_STACK, /* rrcurveto */
- 0 | CFF_COUNT_CLEAR_STACK,
- 0 | CFF_COUNT_CLEAR_STACK,
- 0 | CFF_COUNT_CLEAR_STACK,
- 0 | CFF_COUNT_CLEAR_STACK,
- 0 | CFF_COUNT_CLEAR_STACK,
- 0 | CFF_COUNT_CLEAR_STACK,
-
- 13, /* flex */
- 7,
- 9,
- 11,
-
- 0 | CFF_COUNT_CHECK_WIDTH, /* endchar */
-
- 2 | CFF_COUNT_CHECK_WIDTH, /* hstem */
- 2 | CFF_COUNT_CHECK_WIDTH,
- 2 | CFF_COUNT_CHECK_WIDTH,
- 2 | CFF_COUNT_CHECK_WIDTH,
-
- 0 | CFF_COUNT_CHECK_WIDTH, /* hintmask */
- 0 | CFF_COUNT_CHECK_WIDTH, /* cntrmask */
- 0, /* dotsection */
-
- 1, /* abs */
- 2,
- 2,
- 2,
- 1,
- 0,
- 2,
- 1,
-
- 1, /* blend */
-
- 1, /* drop */
- 2,
- 1,
- 2,
- 1,
-
- 2, /* put */
- 1,
- 4,
- 3,
-
- 2, /* and */
- 2,
- 1,
- 2,
- 4,
-
- 1, /* callsubr */
- 1,
- 0,
-
- 2, /* hsbw */
- 0,
- 0,
- 0,
- 5, /* seac */
- 4, /* sbw */
- 2 /* setcurrentpoint */
- };
-
-#endif /* CFF_CONFIG_OPTION_OLD_ENGINE */
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /********** *********/
- /********** *********/
- /********** GENERIC CHARSTRING PARSING *********/
- /********** *********/
- /********** *********/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* cff_builder_init */
- /* */
- /* <Description> */
- /* Initializes a given glyph builder. */
- /* */
- /* <InOut> */
- /* builder :: A pointer to the glyph builder to initialize. */
- /* */
- /* <Input> */
- /* face :: The current face object. */
- /* */
- /* size :: The current size object. */
- /* */
- /* glyph :: The current glyph object. */
- /* */
- /* hinting :: Whether hinting is active. */
- /* */
- static void
- cff_builder_init( CFF_Builder* builder,
- TT_Face face,
- CFF_Size size,
- CFF_GlyphSlot glyph,
- FT_Bool hinting )
- {
- builder->path_begun = 0;
- builder->load_points = 1;
-
- builder->face = face;
- builder->glyph = glyph;
- builder->memory = face->root.memory;
-
- if ( glyph )
- {
- FT_GlyphLoader loader = glyph->root.internal->loader;
-
-
- builder->loader = loader;
- builder->base = &loader->base.outline;
- builder->current = &loader->current.outline;
- FT_GlyphLoader_Rewind( loader );
-
- builder->hints_globals = NULL;
- builder->hints_funcs = NULL;
-
- if ( hinting && size )
- {
- CFF_Internal internal = (CFF_Internal)size->root.internal;
-
-
- builder->hints_globals = (void *)internal->topfont;
- builder->hints_funcs = glyph->root.internal->glyph_hints;
- }
- }
-
- builder->pos_x = 0;
- builder->pos_y = 0;
-
- builder->left_bearing.x = 0;
- builder->left_bearing.y = 0;
- builder->advance.x = 0;
- builder->advance.y = 0;
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* cff_builder_done */
- /* */
- /* <Description> */
- /* Finalizes a given glyph builder. Its contents can still be used */
- /* after the call, but the function saves important information */
- /* within the corresponding glyph slot. */
- /* */
- /* <Input> */
- /* builder :: A pointer to the glyph builder to finalize. */
- /* */
- static void
- cff_builder_done( CFF_Builder* builder )
- {
- CFF_GlyphSlot glyph = builder->glyph;
-
-
- if ( glyph )
- glyph->root.outline = *builder->base;
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* cff_compute_bias */
- /* */
- /* <Description> */
- /* Computes the bias value in dependence of the number of glyph */
- /* subroutines. */
- /* */
- /* <Input> */
- /* in_charstring_type :: The `CharstringType' value of the top DICT */
- /* dictionary. */
- /* */
- /* num_subrs :: The number of glyph subroutines. */
- /* */
- /* <Return> */
- /* The bias value. */
- static FT_Int
- cff_compute_bias( FT_Int in_charstring_type,
- FT_UInt num_subrs )
- {
- FT_Int result;
-
-
- if ( in_charstring_type == 1 )
- result = 0;
- else if ( num_subrs < 1240 )
- result = 107;
- else if ( num_subrs < 33900U )
- result = 1131;
- else
- result = 32768U;
-
- return result;
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* cff_decoder_init */
- /* */
- /* <Description> */
- /* Initializes a given glyph decoder. */
- /* */
- /* <InOut> */
- /* decoder :: A pointer to the glyph builder to initialize. */
- /* */
- /* <Input> */
- /* face :: The current face object. */
- /* */
- /* size :: The current size object. */
- /* */
- /* slot :: The current glyph object. */
- /* */
- /* hinting :: Whether hinting is active. */
- /* */
- /* hint_mode :: The hinting mode. */
- /* */
- FT_LOCAL_DEF( void )
- cff_decoder_init( CFF_Decoder* decoder,
- TT_Face face,
- CFF_Size size,
- CFF_GlyphSlot slot,
- FT_Bool hinting,
- FT_Render_Mode hint_mode )
- {
- CFF_Font cff = (CFF_Font)face->extra.data;
-
-
- /* clear everything */
- FT_MEM_ZERO( decoder, sizeof ( *decoder ) );
-
- /* initialize builder */
- cff_builder_init( &decoder->builder, face, size, slot, hinting );
-
- /* initialize Type2 decoder */
- decoder->cff = cff;
- decoder->num_globals = cff->global_subrs_index.count;
- decoder->globals = cff->global_subrs;
- decoder->globals_bias = cff_compute_bias(
- cff->top_font.font_dict.charstring_type,
- decoder->num_globals );
-
- decoder->hint_mode = hint_mode;
- }
-
-
- /* this function is used to select the subfont */
- /* and the locals subrs array */
- FT_LOCAL_DEF( FT_Error )
- cff_decoder_prepare( CFF_Decoder* decoder,
- CFF_Size size,
- FT_UInt glyph_index )
- {
- CFF_Builder *builder = &decoder->builder;
- CFF_Font cff = (CFF_Font)builder->face->extra.data;
- CFF_SubFont sub = &cff->top_font;
- FT_Error error = FT_Err_Ok;
-
-
- /* manage CID fonts */
- if ( cff->num_subfonts )
- {
- FT_Byte fd_index = cff_fd_select_get( &cff->fd_select, glyph_index );
-
-
- if ( fd_index >= cff->num_subfonts )
- {
- FT_TRACE4(( "cff_decoder_prepare: invalid CID subfont index\n" ));
- error = FT_THROW( Invalid_File_Format );
- goto Exit;
- }
-
- FT_TRACE3(( " in subfont %d:\n", fd_index ));
-
- sub = cff->subfonts[fd_index];
-
- if ( builder->hints_funcs && size )
- {
- CFF_Internal internal = (CFF_Internal)size->root.internal;
-
-
- /* for CFFs without subfonts, this value has already been set */
- builder->hints_globals = (void *)internal->subfonts[fd_index];
- }
- }
-
- decoder->num_locals = sub->local_subrs_index.count;
- decoder->locals = sub->local_subrs;
- decoder->locals_bias = cff_compute_bias(
- decoder->cff->top_font.font_dict.charstring_type,
- decoder->num_locals );
-
- decoder->glyph_width = sub->private_dict.default_width;
- decoder->nominal_width = sub->private_dict.nominal_width;
-
- decoder->current_subfont = sub; /* for Adobe's CFF handler */
-
- Exit:
- return error;
- }
-
-
- /* check that there is enough space for `count' more points */
- FT_LOCAL_DEF( FT_Error )
- cff_check_points( CFF_Builder* builder,
- FT_Int count )
- {
- return FT_GLYPHLOADER_CHECK_POINTS( builder->loader, count, 0 );
- }
-
-
- /* add a new point, do not check space */
- FT_LOCAL_DEF( void )
- cff_builder_add_point( CFF_Builder* builder,
- FT_Pos x,
- FT_Pos y,
- FT_Byte flag )
- {
- FT_Outline* outline = builder->current;
-
-
- if ( builder->load_points )
- {
- FT_Vector* point = outline->points + outline->n_points;
- FT_Byte* control = (FT_Byte*)outline->tags + outline->n_points;
-
-#ifdef CFF_CONFIG_OPTION_OLD_ENGINE
- CFF_Driver driver = (CFF_Driver)FT_FACE_DRIVER( builder->face );
-
-
- if ( driver->hinting_engine == FT_CFF_HINTING_FREETYPE )
- {
- point->x = x >> 16;
- point->y = y >> 16;
- }
- else
-#endif
- {
- /* cf2_decoder_parse_charstrings uses 16.16 coordinates */
- point->x = x >> 10;
- point->y = y >> 10;
- }
- *control = (FT_Byte)( flag ? FT_CURVE_TAG_ON : FT_CURVE_TAG_CUBIC );
- }
-
- outline->n_points++;
- }
-
-
- /* check space for a new on-curve point, then add it */
- FT_LOCAL_DEF( FT_Error )
- cff_builder_add_point1( CFF_Builder* builder,
- FT_Pos x,
- FT_Pos y )
- {
- FT_Error error;
-
-
- error = cff_check_points( builder, 1 );
- if ( !error )
- cff_builder_add_point( builder, x, y, 1 );
-
- return error;
- }
-
-
- /* check space for a new contour, then add it */
- static FT_Error
- cff_builder_add_contour( CFF_Builder* builder )
- {
- FT_Outline* outline = builder->current;
- FT_Error error;
-
-
- if ( !builder->load_points )
- {
- outline->n_contours++;
- return FT_Err_Ok;
- }
-
- error = FT_GLYPHLOADER_CHECK_POINTS( builder->loader, 0, 1 );
- if ( !error )
- {
- if ( outline->n_contours > 0 )
- outline->contours[outline->n_contours - 1] =
- (short)( outline->n_points - 1 );
-
- outline->n_contours++;
- }
-
- return error;
- }
-
-
- /* if a path was begun, add its first on-curve point */
- FT_LOCAL_DEF( FT_Error )
- cff_builder_start_point( CFF_Builder* builder,
- FT_Pos x,
- FT_Pos y )
- {
- FT_Error error = FT_Err_Ok;
-
-
- /* test whether we are building a new contour */
- if ( !builder->path_begun )
- {
- builder->path_begun = 1;
- error = cff_builder_add_contour( builder );
- if ( !error )
- error = cff_builder_add_point1( builder, x, y );
- }
-
- return error;
- }
-
-
- /* close the current contour */
- FT_LOCAL_DEF( void )
- cff_builder_close_contour( CFF_Builder* builder )
- {
- FT_Outline* outline = builder->current;
- FT_Int first;
-
-
- if ( !outline )
- return;
-
- first = outline->n_contours <= 1
- ? 0 : outline->contours[outline->n_contours - 2] + 1;
-
- /* We must not include the last point in the path if it */
- /* is located on the first point. */
- if ( outline->n_points > 1 )
- {
- FT_Vector* p1 = outline->points + first;
- FT_Vector* p2 = outline->points + outline->n_points - 1;
- FT_Byte* control = (FT_Byte*)outline->tags + outline->n_points - 1;
-
-
- /* `delete' last point only if it coincides with the first */
- /* point and if it is not a control point (which can happen). */
- if ( p1->x == p2->x && p1->y == p2->y )
- if ( *control == FT_CURVE_TAG_ON )
- outline->n_points--;
- }
-
- if ( outline->n_contours > 0 )
- {
- /* Don't add contours only consisting of one point, i.e., */
- /* check whether begin point and last point are the same. */
- if ( first == outline->n_points - 1 )
- {
- outline->n_contours--;
- outline->n_points--;
- }
- else
- outline->contours[outline->n_contours - 1] =
- (short)( outline->n_points - 1 );
- }
- }
-
-
- FT_LOCAL_DEF( FT_Int )
- cff_lookup_glyph_by_stdcharcode( CFF_Font cff,
- FT_Int charcode )
- {
- FT_UInt n;
- FT_UShort glyph_sid;
-
-
- /* CID-keyed fonts don't have glyph names */
- if ( !cff->charset.sids )
- return -1;
-
- /* check range of standard char code */
- if ( charcode < 0 || charcode > 255 )
- return -1;
-
- /* Get code to SID mapping from `cff_standard_encoding'. */
- glyph_sid = cff_get_standard_encoding( (FT_UInt)charcode );
-
- for ( n = 0; n < cff->num_glyphs; n++ )
- {
- if ( cff->charset.sids[n] == glyph_sid )
- return (FT_Int)n;
- }
-
- return -1;
- }
-
-
FT_LOCAL_DEF( FT_Error )
cff_get_glyph_data( TT_Face face,
FT_UInt glyph_index,
@@ -680,7 +68,7 @@
#endif /* FT_CONFIG_OPTION_INCREMENTAL */
{
- CFF_Font cff = (CFF_Font)(face->extra.data);
+ CFF_Font cff = (CFF_Font)(face->extra.data);
return cff_index_access_element( &cff->charstrings_index, glyph_index,
@@ -724,1811 +112,6 @@
}
-#ifdef CFF_CONFIG_OPTION_OLD_ENGINE
-
- static FT_Error
- cff_operator_seac( CFF_Decoder* decoder,
- FT_Pos asb,
- FT_Pos adx,
- FT_Pos ady,
- FT_Int bchar,
- FT_Int achar )
- {
- FT_Error error;
- CFF_Builder* builder = &decoder->builder;
- FT_Int bchar_index, achar_index;
- TT_Face face = decoder->builder.face;
- FT_Vector left_bearing, advance;
- FT_Byte* charstring;
- FT_ULong charstring_len;
- FT_Pos glyph_width;
-
-
- if ( decoder->seac )
- {
- FT_ERROR(( "cff_operator_seac: invalid nested seac\n" ));
- return FT_THROW( Syntax_Error );
- }
-
- adx += decoder->builder.left_bearing.x;
- ady += decoder->builder.left_bearing.y;
-
-#ifdef FT_CONFIG_OPTION_INCREMENTAL
- /* Incremental fonts don't necessarily have valid charsets. */
- /* They use the character code, not the glyph index, in this case. */
- if ( face->root.internal->incremental_interface )
- {
- bchar_index = bchar;
- achar_index = achar;
- }
- else
-#endif /* FT_CONFIG_OPTION_INCREMENTAL */
- {
- CFF_Font cff = (CFF_Font)(face->extra.data);
-
-
- bchar_index = cff_lookup_glyph_by_stdcharcode( cff, bchar );
- achar_index = cff_lookup_glyph_by_stdcharcode( cff, achar );
- }
-
- if ( bchar_index < 0 || achar_index < 0 )
- {
- FT_ERROR(( "cff_operator_seac:"
- " invalid seac character code arguments\n" ));
- return FT_THROW( Syntax_Error );
- }
-
- /* If we are trying to load a composite glyph, do not load the */
- /* accent character and return the array of subglyphs. */
- if ( builder->no_recurse )
- {
- FT_GlyphSlot glyph = (FT_GlyphSlot)builder->glyph;
- FT_GlyphLoader loader = glyph->internal->loader;
- FT_SubGlyph subg;
-
-
- /* reallocate subglyph array if necessary */
- error = FT_GlyphLoader_CheckSubGlyphs( loader, 2 );
- if ( error )
- goto Exit;
-
- subg = loader->current.subglyphs;
-
- /* subglyph 0 = base character */
- subg->index = bchar_index;
- subg->flags = FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES |
- FT_SUBGLYPH_FLAG_USE_MY_METRICS;
- subg->arg1 = 0;
- subg->arg2 = 0;
- subg++;
-
- /* subglyph 1 = accent character */
- subg->index = achar_index;
- subg->flags = FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES;
- subg->arg1 = (FT_Int)( adx >> 16 );
- subg->arg2 = (FT_Int)( ady >> 16 );
-
- /* set up remaining glyph fields */
- glyph->num_subglyphs = 2;
- glyph->subglyphs = loader->base.subglyphs;
- glyph->format = FT_GLYPH_FORMAT_COMPOSITE;
-
- loader->current.num_subglyphs = 2;
- }
-
- FT_GlyphLoader_Prepare( builder->loader );
-
- /* First load `bchar' in builder */
- error = cff_get_glyph_data( face, (FT_UInt)bchar_index,
- &charstring, &charstring_len );
- if ( !error )
- {
- /* the seac operator must not be nested */
- decoder->seac = TRUE;
- error = cff_decoder_parse_charstrings( decoder, charstring,
- charstring_len );
- decoder->seac = FALSE;
-
- cff_free_glyph_data( face, &charstring, charstring_len );
-
- if ( error )
- goto Exit;
- }
-
- /* Save the left bearing, advance and glyph width of the base */
- /* character as they will be erased by the next load. */
-
- left_bearing = builder->left_bearing;
- advance = builder->advance;
- glyph_width = decoder->glyph_width;
-
- builder->left_bearing.x = 0;
- builder->left_bearing.y = 0;
-
- builder->pos_x = adx - asb;
- builder->pos_y = ady;
-
- /* Now load `achar' on top of the base outline. */
- error = cff_get_glyph_data( face, (FT_UInt)achar_index,
- &charstring, &charstring_len );
- if ( !error )
- {
- /* the seac operator must not be nested */
- decoder->seac = TRUE;
- error = cff_decoder_parse_charstrings( decoder, charstring,
- charstring_len );
- decoder->seac = FALSE;
-
- cff_free_glyph_data( face, &charstring, charstring_len );
-
- if ( error )
- goto Exit;
- }
-
- /* Restore the left side bearing, advance and glyph width */
- /* of the base character. */
- builder->left_bearing = left_bearing;
- builder->advance = advance;
- decoder->glyph_width = glyph_width;
-
- builder->pos_x = 0;
- builder->pos_y = 0;
-
- Exit:
- return error;
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* cff_decoder_parse_charstrings */
- /* */
- /* <Description> */
- /* Parses a given Type 2 charstrings program. */
- /* */
- /* <InOut> */
- /* decoder :: The current Type 1 decoder. */
- /* */
- /* <Input> */
- /* charstring_base :: The base of the charstring stream. */
- /* */
- /* charstring_len :: The length in bytes of the charstring stream. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- FT_LOCAL_DEF( FT_Error )
- cff_decoder_parse_charstrings( CFF_Decoder* decoder,
- FT_Byte* charstring_base,
- FT_ULong charstring_len )
- {
- FT_Error error;
- CFF_Decoder_Zone* zone;
- FT_Byte* ip;
- FT_Byte* limit;
- CFF_Builder* builder = &decoder->builder;
- FT_Pos x, y;
- FT_Fixed seed;
- FT_Fixed* stack;
- FT_Int charstring_type =
- decoder->cff->top_font.font_dict.charstring_type;
-
- T2_Hints_Funcs hinter;
-
-
- /* set default width */
- decoder->num_hints = 0;
- decoder->read_width = 1;
-
- /* compute random seed from stack address of parameter */
- seed = (FT_Fixed)( ( (FT_Offset)(char*)&seed ^
- (FT_Offset)(char*)&decoder ^
- (FT_Offset)(char*)&charstring_base ) &
- FT_ULONG_MAX );
- seed = ( seed ^ ( seed >> 10 ) ^ ( seed >> 20 ) ) & 0xFFFFL;
- if ( seed == 0 )
- seed = 0x7384;
-
- /* initialize the decoder */
- decoder->top = decoder->stack;
- decoder->zone = decoder->zones;
- zone = decoder->zones;
- stack = decoder->top;
-
- hinter = (T2_Hints_Funcs)builder->hints_funcs;
-
- builder->path_begun = 0;
-
- zone->base = charstring_base;
- limit = zone->limit = charstring_base + charstring_len;
- ip = zone->cursor = zone->base;
-
- error = FT_Err_Ok;
-
- x = builder->pos_x;
- y = builder->pos_y;
-
- /* begin hints recording session, if any */
- if ( hinter )
- hinter->open( hinter->hints );
-
- /* now execute loop */
- while ( ip < limit )
- {
- CFF_Operator op;
- FT_Byte v;
-
-
- /********************************************************************/
- /* */
- /* Decode operator or operand */
- /* */
- v = *ip++;
- if ( v >= 32 || v == 28 )
- {
- FT_Int shift = 16;
- FT_Int32 val;
-
-
- /* this is an operand, push it on the stack */
-
- /* if we use shifts, all computations are done with unsigned */
- /* values; the conversion to a signed value is the last step */
- if ( v == 28 )
- {
- if ( ip + 1 >= limit )
- goto Syntax_Error;
- val = (FT_Short)( ( (FT_UShort)ip[0] << 8 ) | ip[1] );
- ip += 2;
- }
- else if ( v < 247 )
- val = (FT_Int32)v - 139;
- else if ( v < 251 )
- {
- if ( ip >= limit )
- goto Syntax_Error;
- val = ( (FT_Int32)v - 247 ) * 256 + *ip++ + 108;
- }
- else if ( v < 255 )
- {
- if ( ip >= limit )
- goto Syntax_Error;
- val = -( (FT_Int32)v - 251 ) * 256 - *ip++ - 108;
- }
- else
- {
- if ( ip + 3 >= limit )
- goto Syntax_Error;
- val = (FT_Int32)( ( (FT_UInt32)ip[0] << 24 ) |
- ( (FT_UInt32)ip[1] << 16 ) |
- ( (FT_UInt32)ip[2] << 8 ) |
- (FT_UInt32)ip[3] );
- ip += 4;
- if ( charstring_type == 2 )
- shift = 0;
- }
- if ( decoder->top - stack >= CFF_MAX_OPERANDS )
- goto Stack_Overflow;
-
- val = (FT_Int32)( (FT_UInt32)val << shift );
- *decoder->top++ = val;
-
-#ifdef FT_DEBUG_LEVEL_TRACE
- if ( !( val & 0xFFFFL ) )
- FT_TRACE4(( " %hd", (FT_Short)( (FT_UInt32)val >> 16 ) ));
- else
- FT_TRACE4(( " %.2f", val / 65536.0 ));
-#endif
-
- }
- else
- {
- /* The specification says that normally arguments are to be taken */
- /* from the bottom of the stack. However, this seems not to be */
- /* correct, at least for Acroread 7.0.8 on GNU/Linux: It pops the */
- /* arguments similar to a PS interpreter. */
-
- FT_Fixed* args = decoder->top;
- FT_Int num_args = (FT_Int)( args - decoder->stack );
- FT_Int req_args;
-
-
- /* find operator */
- op = cff_op_unknown;
-
- switch ( v )
- {
- case 1:
- op = cff_op_hstem;
- break;
- case 3:
- op = cff_op_vstem;
- break;
- case 4:
- op = cff_op_vmoveto;
- break;
- case 5:
- op = cff_op_rlineto;
- break;
- case 6:
- op = cff_op_hlineto;
- break;
- case 7:
- op = cff_op_vlineto;
- break;
- case 8:
- op = cff_op_rrcurveto;
- break;
- case 9:
- op = cff_op_closepath;
- break;
- case 10:
- op = cff_op_callsubr;
- break;
- case 11:
- op = cff_op_return;
- break;
- case 12:
- {
- if ( ip >= limit )
- goto Syntax_Error;
- v = *ip++;
-
- switch ( v )
- {
- case 0:
- op = cff_op_dotsection;
- break;
- case 1: /* this is actually the Type1 vstem3 operator */
- op = cff_op_vstem;
- break;
- case 2: /* this is actually the Type1 hstem3 operator */
- op = cff_op_hstem;
- break;
- case 3:
- op = cff_op_and;
- break;
- case 4:
- op = cff_op_or;
- break;
- case 5:
- op = cff_op_not;
- break;
- case 6:
- op = cff_op_seac;
- break;
- case 7:
- op = cff_op_sbw;
- break;
- case 8:
- op = cff_op_store;
- break;
- case 9:
- op = cff_op_abs;
- break;
- case 10:
- op = cff_op_add;
- break;
- case 11:
- op = cff_op_sub;
- break;
- case 12:
- op = cff_op_div;
- break;
- case 13:
- op = cff_op_load;
- break;
- case 14:
- op = cff_op_neg;
- break;
- case 15:
- op = cff_op_eq;
- break;
- case 16:
- op = cff_op_callothersubr;
- break;
- case 17:
- op = cff_op_pop;
- break;
- case 18:
- op = cff_op_drop;
- break;
- case 20:
- op = cff_op_put;
- break;
- case 21:
- op = cff_op_get;
- break;
- case 22:
- op = cff_op_ifelse;
- break;
- case 23:
- op = cff_op_random;
- break;
- case 24:
- op = cff_op_mul;
- break;
- case 26:
- op = cff_op_sqrt;
- break;
- case 27:
- op = cff_op_dup;
- break;
- case 28:
- op = cff_op_exch;
- break;
- case 29:
- op = cff_op_index;
- break;
- case 30:
- op = cff_op_roll;
- break;
- case 33:
- op = cff_op_setcurrentpoint;
- break;
- case 34:
- op = cff_op_hflex;
- break;
- case 35:
- op = cff_op_flex;
- break;
- case 36:
- op = cff_op_hflex1;
- break;
- case 37:
- op = cff_op_flex1;
- break;
- default:
- FT_TRACE4(( " unknown op (12, %d)\n", v ));
- break;
- }
- }
- break;
- case 13:
- op = cff_op_hsbw;
- break;
- case 14:
- op = cff_op_endchar;
- break;
- case 16:
- op = cff_op_blend;
- break;
- case 18:
- op = cff_op_hstemhm;
- break;
- case 19:
- op = cff_op_hintmask;
- break;
- case 20:
- op = cff_op_cntrmask;
- break;
- case 21:
- op = cff_op_rmoveto;
- break;
- case 22:
- op = cff_op_hmoveto;
- break;
- case 23:
- op = cff_op_vstemhm;
- break;
- case 24:
- op = cff_op_rcurveline;
- break;
- case 25:
- op = cff_op_rlinecurve;
- break;
- case 26:
- op = cff_op_vvcurveto;
- break;
- case 27:
- op = cff_op_hhcurveto;
- break;
- case 29:
- op = cff_op_callgsubr;
- break;
- case 30:
- op = cff_op_vhcurveto;
- break;
- case 31:
- op = cff_op_hvcurveto;
- break;
- default:
- FT_TRACE4(( " unknown op (%d)\n", v ));
- break;
- }
-
- if ( op == cff_op_unknown )
- continue;
-
- /* check arguments */
- req_args = cff_argument_counts[op];
- if ( req_args & CFF_COUNT_CHECK_WIDTH )
- {
- if ( num_args > 0 && decoder->read_width )
- {
- /* If `nominal_width' is non-zero, the number is really a */
- /* difference against `nominal_width'. Else, the number here */
- /* is truly a width, not a difference against `nominal_width'. */
- /* If the font does not set `nominal_width', then */
- /* `nominal_width' defaults to zero, and so we can set */
- /* `glyph_width' to `nominal_width' plus number on the stack */
- /* -- for either case. */
-
- FT_Int set_width_ok;
-
-
- switch ( op )
- {
- case cff_op_hmoveto:
- case cff_op_vmoveto:
- set_width_ok = num_args & 2;
- break;
-
- case cff_op_hstem:
- case cff_op_vstem:
- case cff_op_hstemhm:
- case cff_op_vstemhm:
- case cff_op_rmoveto:
- case cff_op_hintmask:
- case cff_op_cntrmask:
- set_width_ok = num_args & 1;
- break;
-
- case cff_op_endchar:
- /* If there is a width specified for endchar, we either have */
- /* 1 argument or 5 arguments. We like to argue. */
- set_width_ok = ( num_args == 5 ) || ( num_args == 1 );
- break;
-
- default:
- set_width_ok = 0;
- break;
- }
-
- if ( set_width_ok )
- {
- decoder->glyph_width = decoder->nominal_width +
- ( stack[0] >> 16 );
-
- if ( decoder->width_only )
- {
- /* we only want the advance width; stop here */
- break;
- }
-
- /* Consumed an argument. */
- num_args--;
- }
- }
-
- decoder->read_width = 0;
- req_args = 0;
- }
-
- req_args &= 0x000F;
- if ( num_args < req_args )
- goto Stack_Underflow;
- args -= req_args;
- num_args -= req_args;
-
- /* At this point, `args' points to the first argument of the */
- /* operand in case `req_args' isn't zero. Otherwise, we have */
- /* to adjust `args' manually. */
-
- /* Note that we only pop arguments from the stack which we */
- /* really need and can digest so that we can continue in case */
- /* of superfluous stack elements. */
-
- switch ( op )
- {
- case cff_op_hstem:
- case cff_op_vstem:
- case cff_op_hstemhm:
- case cff_op_vstemhm:
- /* the number of arguments is always even here */
- FT_TRACE4((
- op == cff_op_hstem ? " hstem\n" :
- ( op == cff_op_vstem ? " vstem\n" :
- ( op == cff_op_hstemhm ? " hstemhm\n" : " vstemhm\n" ) ) ));
-
- if ( hinter )
- hinter->stems( hinter->hints,
- ( op == cff_op_hstem || op == cff_op_hstemhm ),
- num_args / 2,
- args - ( num_args & ~1 ) );
-
- decoder->num_hints += num_args / 2;
- args = stack;
- break;
-
- case cff_op_hintmask:
- case cff_op_cntrmask:
- FT_TRACE4(( op == cff_op_hintmask ? " hintmask" : " cntrmask" ));
-
- /* implement vstem when needed -- */
- /* the specification doesn't say it, but this also works */
- /* with the 'cntrmask' operator */
- /* */
- if ( num_args > 0 )
- {
- if ( hinter )
- hinter->stems( hinter->hints,
- 0,
- num_args / 2,
- args - ( num_args & ~1 ) );
-
- decoder->num_hints += num_args / 2;
- }
-
- /* In a valid charstring there must be at least one byte */
- /* after `hintmask' or `cntrmask' (e.g., for a `return' */
- /* instruction). Additionally, there must be space for */
- /* `num_hints' bits. */
-
- if ( ( ip + ( ( decoder->num_hints + 7 ) >> 3 ) ) >= limit )
- goto Syntax_Error;
-
- if ( hinter )
- {
- if ( op == cff_op_hintmask )
- hinter->hintmask( hinter->hints,
- (FT_UInt)builder->current->n_points,
- (FT_UInt)decoder->num_hints,
- ip );
- else
- hinter->counter( hinter->hints,
- (FT_UInt)decoder->num_hints,
- ip );
- }
-
-#ifdef FT_DEBUG_LEVEL_TRACE
- {
- FT_UInt maskbyte;
-
-
- FT_TRACE4(( " (maskbytes:" ));
-
- for ( maskbyte = 0;
- maskbyte < (FT_UInt)( ( decoder->num_hints + 7 ) >> 3 );
- maskbyte++, ip++ )
- FT_TRACE4(( " 0x%02X", *ip ));
-
- FT_TRACE4(( ")\n" ));
- }
-#else
- ip += ( decoder->num_hints + 7 ) >> 3;
-#endif
- args = stack;
- break;
-
- case cff_op_rmoveto:
- FT_TRACE4(( " rmoveto\n" ));
-
- cff_builder_close_contour( builder );
- builder->path_begun = 0;
- x += args[-2];
- y += args[-1];
- args = stack;
- break;
-
- case cff_op_vmoveto:
- FT_TRACE4(( " vmoveto\n" ));
-
- cff_builder_close_contour( builder );
- builder->path_begun = 0;
- y += args[-1];
- args = stack;
- break;
-
- case cff_op_hmoveto:
- FT_TRACE4(( " hmoveto\n" ));
-
- cff_builder_close_contour( builder );
- builder->path_begun = 0;
- x += args[-1];
- args = stack;
- break;
-
- case cff_op_rlineto:
- FT_TRACE4(( " rlineto\n" ));
-
- if ( cff_builder_start_point( builder, x, y ) ||
- cff_check_points( builder, num_args / 2 ) )
- goto Fail;
-
- if ( num_args < 2 )
- goto Stack_Underflow;
-
- args -= num_args & ~1;
- while ( args < decoder->top )
- {
- x += args[0];
- y += args[1];
- cff_builder_add_point( builder, x, y, 1 );
- args += 2;
- }
- args = stack;
- break;
-
- case cff_op_hlineto:
- case cff_op_vlineto:
- {
- FT_Int phase = ( op == cff_op_hlineto );
-
-
- FT_TRACE4(( op == cff_op_hlineto ? " hlineto\n"
- : " vlineto\n" ));
-
- if ( num_args < 0 )
- goto Stack_Underflow;
-
- /* there exist subsetted fonts (found in PDFs) */
- /* which call `hlineto' without arguments */
- if ( num_args == 0 )
- break;
-
- if ( cff_builder_start_point( builder, x, y ) ||
- cff_check_points( builder, num_args ) )
- goto Fail;
-
- args = stack;
- while ( args < decoder->top )
- {
- if ( phase )
- x += args[0];
- else
- y += args[0];
-
- if ( cff_builder_add_point1( builder, x, y ) )
- goto Fail;
-
- args++;
- phase ^= 1;
- }
- args = stack;
- }
- break;
-
- case cff_op_rrcurveto:
- {
- FT_Int nargs;
-
-
- FT_TRACE4(( " rrcurveto\n" ));
-
- if ( num_args < 6 )
- goto Stack_Underflow;
-
- nargs = num_args - num_args % 6;
-
- if ( cff_builder_start_point( builder, x, y ) ||
- cff_check_points( builder, nargs / 2 ) )
- goto Fail;
-
- args -= nargs;
- while ( args < decoder->top )
- {
- x += args[0];
- y += args[1];
- cff_builder_add_point( builder, x, y, 0 );
- x += args[2];
- y += args[3];
- cff_builder_add_point( builder, x, y, 0 );
- x += args[4];
- y += args[5];
- cff_builder_add_point( builder, x, y, 1 );
- args += 6;
- }
- args = stack;
- }
- break;
-
- case cff_op_vvcurveto:
- {
- FT_Int nargs;
-
-
- FT_TRACE4(( " vvcurveto\n" ));
-
- if ( num_args < 4 )
- goto Stack_Underflow;
-
- /* if num_args isn't of the form 4n or 4n+1, */
- /* we enforce it by clearing the second bit */
-
- nargs = num_args & ~2;
-
- if ( cff_builder_start_point( builder, x, y ) )
- goto Fail;
-
- args -= nargs;
-
- if ( nargs & 1 )
- {
- x += args[0];
- args++;
- nargs--;
- }
-
- if ( cff_check_points( builder, 3 * ( nargs / 4 ) ) )
- goto Fail;
-
- while ( args < decoder->top )
- {
- y += args[0];
- cff_builder_add_point( builder, x, y, 0 );
- x += args[1];
- y += args[2];
- cff_builder_add_point( builder, x, y, 0 );
- y += args[3];
- cff_builder_add_point( builder, x, y, 1 );
- args += 4;
- }
- args = stack;
- }
- break;
-
- case cff_op_hhcurveto:
- {
- FT_Int nargs;
-
-
- FT_TRACE4(( " hhcurveto\n" ));
-
- if ( num_args < 4 )
- goto Stack_Underflow;
-
- /* if num_args isn't of the form 4n or 4n+1, */
- /* we enforce it by clearing the second bit */
-
- nargs = num_args & ~2;
-
- if ( cff_builder_start_point( builder, x, y ) )
- goto Fail;
-
- args -= nargs;
- if ( nargs & 1 )
- {
- y += args[0];
- args++;
- nargs--;
- }
-
- if ( cff_check_points( builder, 3 * ( nargs / 4 ) ) )
- goto Fail;
-
- while ( args < decoder->top )
- {
- x += args[0];
- cff_builder_add_point( builder, x, y, 0 );
- x += args[1];
- y += args[2];
- cff_builder_add_point( builder, x, y, 0 );
- x += args[3];
- cff_builder_add_point( builder, x, y, 1 );
- args += 4;
- }
- args = stack;
- }
- break;
-
- case cff_op_vhcurveto:
- case cff_op_hvcurveto:
- {
- FT_Int phase;
- FT_Int nargs;
-
-
- FT_TRACE4(( op == cff_op_vhcurveto ? " vhcurveto\n"
- : " hvcurveto\n" ));
-
- if ( cff_builder_start_point( builder, x, y ) )
- goto Fail;
-
- if ( num_args < 4 )
- goto Stack_Underflow;
-
- /* if num_args isn't of the form 8n, 8n+1, 8n+4, or 8n+5, */
- /* we enforce it by clearing the second bit */
-
- nargs = num_args & ~2;
-
- args -= nargs;
- if ( cff_check_points( builder, ( nargs / 4 ) * 3 ) )
- goto Stack_Underflow;
-
- phase = ( op == cff_op_hvcurveto );
-
- while ( nargs >= 4 )
- {
- nargs -= 4;
- if ( phase )
- {
- x += args[0];
- cff_builder_add_point( builder, x, y, 0 );
- x += args[1];
- y += args[2];
- cff_builder_add_point( builder, x, y, 0 );
- y += args[3];
- if ( nargs == 1 )
- x += args[4];
- cff_builder_add_point( builder, x, y, 1 );
- }
- else
- {
- y += args[0];
- cff_builder_add_point( builder, x, y, 0 );
- x += args[1];
- y += args[2];
- cff_builder_add_point( builder, x, y, 0 );
- x += args[3];
- if ( nargs == 1 )
- y += args[4];
- cff_builder_add_point( builder, x, y, 1 );
- }
- args += 4;
- phase ^= 1;
- }
- args = stack;
- }
- break;
-
- case cff_op_rlinecurve:
- {
- FT_Int num_lines;
- FT_Int nargs;
-
-
- FT_TRACE4(( " rlinecurve\n" ));
-
- if ( num_args < 8 )
- goto Stack_Underflow;
-
- nargs = num_args & ~1;
- num_lines = ( nargs - 6 ) / 2;
-
- if ( cff_builder_start_point( builder, x, y ) ||
- cff_check_points( builder, num_lines + 3 ) )
- goto Fail;
-
- args -= nargs;
-
- /* first, add the line segments */
- while ( num_lines > 0 )
- {
- x += args[0];
- y += args[1];
- cff_builder_add_point( builder, x, y, 1 );
- args += 2;
- num_lines--;
- }
-
- /* then the curve */
- x += args[0];
- y += args[1];
- cff_builder_add_point( builder, x, y, 0 );
- x += args[2];
- y += args[3];
- cff_builder_add_point( builder, x, y, 0 );
- x += args[4];
- y += args[5];
- cff_builder_add_point( builder, x, y, 1 );
- args = stack;
- }
- break;
-
- case cff_op_rcurveline:
- {
- FT_Int num_curves;
- FT_Int nargs;
-
-
- FT_TRACE4(( " rcurveline\n" ));
-
- if ( num_args < 8 )
- goto Stack_Underflow;
-
- nargs = num_args - 2;
- nargs = nargs - nargs % 6 + 2;
- num_curves = ( nargs - 2 ) / 6;
-
- if ( cff_builder_start_point( builder, x, y ) ||
- cff_check_points( builder, num_curves * 3 + 2 ) )
- goto Fail;
-
- args -= nargs;
-
- /* first, add the curves */
- while ( num_curves > 0 )
- {
- x += args[0];
- y += args[1];
- cff_builder_add_point( builder, x, y, 0 );
- x += args[2];
- y += args[3];
- cff_builder_add_point( builder, x, y, 0 );
- x += args[4];
- y += args[5];
- cff_builder_add_point( builder, x, y, 1 );
- args += 6;
- num_curves--;
- }
-
- /* then the final line */
- x += args[0];
- y += args[1];
- cff_builder_add_point( builder, x, y, 1 );
- args = stack;
- }
- break;
-
- case cff_op_hflex1:
- {
- FT_Pos start_y;
-
-
- FT_TRACE4(( " hflex1\n" ));
-
- /* adding five more points: 4 control points, 1 on-curve point */
- /* -- make sure we have enough space for the start point if it */
- /* needs to be added */
- if ( cff_builder_start_point( builder, x, y ) ||
- cff_check_points( builder, 6 ) )
- goto Fail;
-
- /* record the starting point's y position for later use */
- start_y = y;
-
- /* first control point */
- x += args[0];
- y += args[1];
- cff_builder_add_point( builder, x, y, 0 );
-
- /* second control point */
- x += args[2];
- y += args[3];
- cff_builder_add_point( builder, x, y, 0 );
-
- /* join point; on curve, with y-value the same as the last */
- /* control point's y-value */
- x += args[4];
- cff_builder_add_point( builder, x, y, 1 );
-
- /* third control point, with y-value the same as the join */
- /* point's y-value */
- x += args[5];
- cff_builder_add_point( builder, x, y, 0 );
-
- /* fourth control point */
- x += args[6];
- y += args[7];
- cff_builder_add_point( builder, x, y, 0 );
-
- /* ending point, with y-value the same as the start */
- x += args[8];
- y = start_y;
- cff_builder_add_point( builder, x, y, 1 );
-
- args = stack;
- break;
- }
-
- case cff_op_hflex:
- {
- FT_Pos start_y;
-
-
- FT_TRACE4(( " hflex\n" ));
-
- /* adding six more points; 4 control points, 2 on-curve points */
- if ( cff_builder_start_point( builder, x, y ) ||
- cff_check_points( builder, 6 ) )
- goto Fail;
-
- /* record the starting point's y-position for later use */
- start_y = y;
-
- /* first control point */
- x += args[0];
- cff_builder_add_point( builder, x, y, 0 );
-
- /* second control point */
- x += args[1];
- y += args[2];
- cff_builder_add_point( builder, x, y, 0 );
-
- /* join point; on curve, with y-value the same as the last */
- /* control point's y-value */
- x += args[3];
- cff_builder_add_point( builder, x, y, 1 );
-
- /* third control point, with y-value the same as the join */
- /* point's y-value */
- x += args[4];
- cff_builder_add_point( builder, x, y, 0 );
-
- /* fourth control point */
- x += args[5];
- y = start_y;
- cff_builder_add_point( builder, x, y, 0 );
-
- /* ending point, with y-value the same as the start point's */
- /* y-value -- we don't add this point, though */
- x += args[6];
- cff_builder_add_point( builder, x, y, 1 );
-
- args = stack;
- break;
- }
-
- case cff_op_flex1:
- {
- FT_Pos start_x, start_y; /* record start x, y values for */
- /* alter use */
- FT_Fixed dx = 0, dy = 0; /* used in horizontal/vertical */
- /* algorithm below */
- FT_Int horizontal, count;
- FT_Fixed* temp;
-
-
- FT_TRACE4(( " flex1\n" ));
-
- /* adding six more points; 4 control points, 2 on-curve points */
- if ( cff_builder_start_point( builder, x, y ) ||
- cff_check_points( builder, 6 ) )
- goto Fail;
-
- /* record the starting point's x, y position for later use */
- start_x = x;
- start_y = y;
-
- /* XXX: figure out whether this is supposed to be a horizontal */
- /* or vertical flex; the Type 2 specification is vague... */
-
- temp = args;
-
- /* grab up to the last argument */
- for ( count = 5; count > 0; count-- )
- {
- dx += temp[0];
- dy += temp[1];
- temp += 2;
- }
-
- if ( dx < 0 )
- dx = -dx;
- if ( dy < 0 )
- dy = -dy;
-
- /* strange test, but here it is... */
- horizontal = ( dx > dy );
-
- for ( count = 5; count > 0; count-- )
- {
- x += args[0];
- y += args[1];
- cff_builder_add_point( builder, x, y,
- (FT_Bool)( count == 3 ) );
- args += 2;
- }
-
- /* is last operand an x- or y-delta? */
- if ( horizontal )
- {
- x += args[0];
- y = start_y;
- }
- else
- {
- x = start_x;
- y += args[0];
- }
-
- cff_builder_add_point( builder, x, y, 1 );
-
- args = stack;
- break;
- }
-
- case cff_op_flex:
- {
- FT_UInt count;
-
-
- FT_TRACE4(( " flex\n" ));
-
- if ( cff_builder_start_point( builder, x, y ) ||
- cff_check_points( builder, 6 ) )
- goto Fail;
-
- for ( count = 6; count > 0; count-- )
- {
- x += args[0];
- y += args[1];
- cff_builder_add_point( builder, x, y,
- (FT_Bool)( count == 4 || count == 1 ) );
- args += 2;
- }
-
- args = stack;
- }
- break;
-
- case cff_op_seac:
- FT_TRACE4(( " seac\n" ));
-
- error = cff_operator_seac( decoder,
- args[0], args[1], args[2],
- (FT_Int)( args[3] >> 16 ),
- (FT_Int)( args[4] >> 16 ) );
-
- /* add current outline to the glyph slot */
- FT_GlyphLoader_Add( builder->loader );
-
- /* return now! */
- FT_TRACE4(( "\n" ));
- return error;
-
- case cff_op_endchar:
- FT_TRACE4(( " endchar\n" ));
-
- /* We are going to emulate the seac operator. */
- if ( num_args >= 4 )
- {
- /* Save glyph width so that the subglyphs don't overwrite it. */
- FT_Pos glyph_width = decoder->glyph_width;
-
-
- error = cff_operator_seac( decoder,
- 0L, args[-4], args[-3],
- (FT_Int)( args[-2] >> 16 ),
- (FT_Int)( args[-1] >> 16 ) );
-
- decoder->glyph_width = glyph_width;
- }
- else
- {
- cff_builder_close_contour( builder );
-
- /* close hints recording session */
- if ( hinter )
- {
- if ( hinter->close( hinter->hints,
- (FT_UInt)builder->current->n_points ) )
- goto Syntax_Error;
-
- /* apply hints to the loaded glyph outline now */
- error = hinter->apply( hinter->hints,
- builder->current,
- (PSH_Globals)builder->hints_globals,
- decoder->hint_mode );
- if ( error )
- goto Fail;
- }
-
- /* add current outline to the glyph slot */
- FT_GlyphLoader_Add( builder->loader );
- }
-
- /* return now! */
- FT_TRACE4(( "\n" ));
- return error;
-
- case cff_op_abs:
- FT_TRACE4(( " abs\n" ));
-
- if ( args[0] < 0 )
- args[0] = -args[0];
- args++;
- break;
-
- case cff_op_add:
- FT_TRACE4(( " add\n" ));
-
- args[0] += args[1];
- args++;
- break;
-
- case cff_op_sub:
- FT_TRACE4(( " sub\n" ));
-
- args[0] -= args[1];
- args++;
- break;
-
- case cff_op_div:
- FT_TRACE4(( " div\n" ));
-
- args[0] = FT_DivFix( args[0], args[1] );
- args++;
- break;
-
- case cff_op_neg:
- FT_TRACE4(( " neg\n" ));
-
- args[0] = -args[0];
- args++;
- break;
-
- case cff_op_random:
- {
- FT_Fixed Rand;
-
-
- FT_TRACE4(( " rand\n" ));
-
- Rand = seed;
- if ( Rand >= 0x8000L )
- Rand++;
-
- args[0] = Rand;
- seed = FT_MulFix( seed, 0x10000L - seed );
- if ( seed == 0 )
- seed += 0x2873;
- args++;
- }
- break;
-
- case cff_op_mul:
- FT_TRACE4(( " mul\n" ));
-
- args[0] = FT_MulFix( args[0], args[1] );
- args++;
- break;
-
- case cff_op_sqrt:
- FT_TRACE4(( " sqrt\n" ));
-
- if ( args[0] > 0 )
- {
- FT_Int count = 9;
- FT_Fixed root = args[0];
- FT_Fixed new_root;
-
-
- for (;;)
- {
- new_root = ( root + FT_DivFix( args[0], root ) + 1 ) >> 1;
- if ( new_root == root || count <= 0 )
- break;
- root = new_root;
- }
- args[0] = new_root;
- }
- else
- args[0] = 0;
- args++;
- break;
-
- case cff_op_drop:
- /* nothing */
- FT_TRACE4(( " drop\n" ));
-
- break;
-
- case cff_op_exch:
- {
- FT_Fixed tmp;
-
-
- FT_TRACE4(( " exch\n" ));
-
- tmp = args[0];
- args[0] = args[1];
- args[1] = tmp;
- args += 2;
- }
- break;
-
- case cff_op_index:
- {
- FT_Int idx = (FT_Int)( args[0] >> 16 );
-
-
- FT_TRACE4(( " index\n" ));
-
- if ( idx < 0 )
- idx = 0;
- else if ( idx > num_args - 2 )
- idx = num_args - 2;
- args[0] = args[-( idx + 1 )];
- args++;
- }
- break;
-
- case cff_op_roll:
- {
- FT_Int count = (FT_Int)( args[0] >> 16 );
- FT_Int idx = (FT_Int)( args[1] >> 16 );
-
-
- FT_TRACE4(( " roll\n" ));
-
- if ( count <= 0 )
- count = 1;
-
- args -= count;
- if ( args < stack )
- goto Stack_Underflow;
-
- if ( idx >= 0 )
- {
- while ( idx > 0 )
- {
- FT_Fixed tmp = args[count - 1];
- FT_Int i;
-
-
- for ( i = count - 2; i >= 0; i-- )
- args[i + 1] = args[i];
- args[0] = tmp;
- idx--;
- }
- }
- else
- {
- while ( idx < 0 )
- {
- FT_Fixed tmp = args[0];
- FT_Int i;
-
-
- for ( i = 0; i < count - 1; i++ )
- args[i] = args[i + 1];
- args[count - 1] = tmp;
- idx++;
- }
- }
- args += count;
- }
- break;
-
- case cff_op_dup:
- FT_TRACE4(( " dup\n" ));
-
- args[1] = args[0];
- args += 2;
- break;
-
- case cff_op_put:
- {
- FT_Fixed val = args[0];
- FT_Int idx = (FT_Int)( args[1] >> 16 );
-
-
- FT_TRACE4(( " put\n" ));
-
- if ( idx >= 0 && idx < CFF_MAX_TRANS_ELEMENTS )
- decoder->buildchar[idx] = val;
- }
- break;
-
- case cff_op_get:
- {
- FT_Int idx = (FT_Int)( args[0] >> 16 );
- FT_Fixed val = 0;
-
-
- FT_TRACE4(( " get\n" ));
-
- if ( idx >= 0 && idx < CFF_MAX_TRANS_ELEMENTS )
- val = decoder->buildchar[idx];
-
- args[0] = val;
- args++;
- }
- break;
-
- case cff_op_store:
- FT_TRACE4(( " store\n"));
-
- goto Unimplemented;
-
- case cff_op_load:
- FT_TRACE4(( " load\n" ));
-
- goto Unimplemented;
-
- case cff_op_dotsection:
- /* this operator is deprecated and ignored by the parser */
- FT_TRACE4(( " dotsection\n" ));
- break;
-
- case cff_op_closepath:
- /* this is an invalid Type 2 operator; however, there */
- /* exist fonts which are incorrectly converted from probably */
- /* Type 1 to CFF, and some parsers seem to accept it */
-
- FT_TRACE4(( " closepath (invalid op)\n" ));
-
- args = stack;
- break;
-
- case cff_op_hsbw:
- /* this is an invalid Type 2 operator; however, there */
- /* exist fonts which are incorrectly converted from probably */
- /* Type 1 to CFF, and some parsers seem to accept it */
-
- FT_TRACE4(( " hsbw (invalid op)\n" ));
-
- decoder->glyph_width = decoder->nominal_width + ( args[1] >> 16 );
-
- decoder->builder.left_bearing.x = args[0];
- decoder->builder.left_bearing.y = 0;
-
- x = decoder->builder.pos_x + args[0];
- y = decoder->builder.pos_y;
- args = stack;
- break;
-
- case cff_op_sbw:
- /* this is an invalid Type 2 operator; however, there */
- /* exist fonts which are incorrectly converted from probably */
- /* Type 1 to CFF, and some parsers seem to accept it */
-
- FT_TRACE4(( " sbw (invalid op)\n" ));
-
- decoder->glyph_width = decoder->nominal_width + ( args[2] >> 16 );
-
- decoder->builder.left_bearing.x = args[0];
- decoder->builder.left_bearing.y = args[1];
-
- x = decoder->builder.pos_x + args[0];
- y = decoder->builder.pos_y + args[1];
- args = stack;
- break;
-
- case cff_op_setcurrentpoint:
- /* this is an invalid Type 2 operator; however, there */
- /* exist fonts which are incorrectly converted from probably */
- /* Type 1 to CFF, and some parsers seem to accept it */
-
- FT_TRACE4(( " setcurrentpoint (invalid op)\n" ));
-
- x = decoder->builder.pos_x + args[0];
- y = decoder->builder.pos_y + args[1];
- args = stack;
- break;
-
- case cff_op_callothersubr:
- /* this is an invalid Type 2 operator; however, there */
- /* exist fonts which are incorrectly converted from probably */
- /* Type 1 to CFF, and some parsers seem to accept it */
-
- FT_TRACE4(( " callothersubr (invalid op)\n" ));
-
- /* subsequent `pop' operands should add the arguments, */
- /* this is the implementation described for `unknown' other */
- /* subroutines in the Type1 spec. */
- /* */
- /* XXX Fix return arguments (see discussion below). */
- args -= 2 + ( args[-2] >> 16 );
- if ( args < stack )
- goto Stack_Underflow;
- break;
-
- case cff_op_pop:
- /* this is an invalid Type 2 operator; however, there */
- /* exist fonts which are incorrectly converted from probably */
- /* Type 1 to CFF, and some parsers seem to accept it */
-
- FT_TRACE4(( " pop (invalid op)\n" ));
-
- /* XXX Increasing `args' is wrong: After a certain number of */
- /* `pop's we get a stack overflow. Reason for doing it is */
- /* code like this (actually found in a CFF font): */
- /* */
- /* 17 1 3 callothersubr */
- /* pop */
- /* callsubr */
- /* */
- /* Since we handle `callothersubr' as a no-op, and */
- /* `callsubr' needs at least one argument, `pop' can't be a */
- /* no-op too as it basically should be. */
- /* */
- /* The right solution would be to provide real support for */
- /* `callothersubr' as done in `t1decode.c', however, given */
- /* the fact that CFF fonts with `pop' are invalid, it is */
- /* questionable whether it is worth the time. */
- args++;
- break;
-
- case cff_op_and:
- {
- FT_Fixed cond = args[0] && args[1];
-
-
- FT_TRACE4(( " and\n" ));
-
- args[0] = cond ? 0x10000L : 0;
- args++;
- }
- break;
-
- case cff_op_or:
- {
- FT_Fixed cond = args[0] || args[1];
-
-
- FT_TRACE4(( " or\n" ));
-
- args[0] = cond ? 0x10000L : 0;
- args++;
- }
- break;
-
- case cff_op_eq:
- {
- FT_Fixed cond = !args[0];
-
-
- FT_TRACE4(( " eq\n" ));
-
- args[0] = cond ? 0x10000L : 0;
- args++;
- }
- break;
-
- case cff_op_ifelse:
- {
- FT_Fixed cond = ( args[2] <= args[3] );
-
-
- FT_TRACE4(( " ifelse\n" ));
-
- if ( !cond )
- args[0] = args[1];
- args++;
- }
- break;
-
- case cff_op_callsubr:
- {
- FT_UInt idx = (FT_UInt)( ( args[0] >> 16 ) +
- decoder->locals_bias );
-
-
- FT_TRACE4(( " callsubr (idx %d, entering level %d)\n",
- idx,
- zone - decoder->zones + 1 ));
-
- if ( idx >= decoder->num_locals )
- {
- FT_ERROR(( "cff_decoder_parse_charstrings:"
- " invalid local subr index\n" ));
- goto Syntax_Error;
- }
-
- if ( zone - decoder->zones >= CFF_MAX_SUBRS_CALLS )
- {
- FT_ERROR(( "cff_decoder_parse_charstrings:"
- " too many nested subrs\n" ));
- goto Syntax_Error;
- }
-
- zone->cursor = ip; /* save current instruction pointer */
-
- zone++;
- zone->base = decoder->locals[idx];
- zone->limit = decoder->locals[idx + 1];
- zone->cursor = zone->base;
-
- if ( !zone->base || zone->limit == zone->base )
- {
- FT_ERROR(( "cff_decoder_parse_charstrings:"
- " invoking empty subrs\n" ));
- goto Syntax_Error;
- }
-
- decoder->zone = zone;
- ip = zone->base;
- limit = zone->limit;
- }
- break;
-
- case cff_op_callgsubr:
- {
- FT_UInt idx = (FT_UInt)( ( args[0] >> 16 ) +
- decoder->globals_bias );
-
-
- FT_TRACE4(( " callgsubr (idx %d, entering level %d)\n",
- idx,
- zone - decoder->zones + 1 ));
-
- if ( idx >= decoder->num_globals )
- {
- FT_ERROR(( "cff_decoder_parse_charstrings:"
- " invalid global subr index\n" ));
- goto Syntax_Error;
- }
-
- if ( zone - decoder->zones >= CFF_MAX_SUBRS_CALLS )
- {
- FT_ERROR(( "cff_decoder_parse_charstrings:"
- " too many nested subrs\n" ));
- goto Syntax_Error;
- }
-
- zone->cursor = ip; /* save current instruction pointer */
-
- zone++;
- zone->base = decoder->globals[idx];
- zone->limit = decoder->globals[idx + 1];
- zone->cursor = zone->base;
-
- if ( !zone->base || zone->limit == zone->base )
- {
- FT_ERROR(( "cff_decoder_parse_charstrings:"
- " invoking empty subrs\n" ));
- goto Syntax_Error;
- }
-
- decoder->zone = zone;
- ip = zone->base;
- limit = zone->limit;
- }
- break;
-
- case cff_op_return:
- FT_TRACE4(( " return (leaving level %d)\n",
- decoder->zone - decoder->zones ));
-
- if ( decoder->zone <= decoder->zones )
- {
- FT_ERROR(( "cff_decoder_parse_charstrings:"
- " unexpected return\n" ));
- goto Syntax_Error;
- }
-
- decoder->zone--;
- zone = decoder->zone;
- ip = zone->cursor;
- limit = zone->limit;
- break;
-
- default:
- Unimplemented:
- FT_ERROR(( "Unimplemented opcode: %d", ip[-1] ));
-
- if ( ip[-1] == 12 )
- FT_ERROR(( " %d", ip[0] ));
- FT_ERROR(( "\n" ));
-
- return FT_THROW( Unimplemented_Feature );
- }
-
- decoder->top = args;
-
- if ( decoder->top - stack >= CFF_MAX_OPERANDS )
- goto Stack_Overflow;
-
- } /* general operator processing */
-
- } /* while ip < limit */
-
- FT_TRACE4(( "..end..\n\n" ));
-
- Fail:
- return error;
-
- Syntax_Error:
- FT_TRACE4(( "cff_decoder_parse_charstrings: syntax error\n" ));
- return FT_THROW( Invalid_File_Format );
-
- Stack_Underflow:
- FT_TRACE4(( "cff_decoder_parse_charstrings: stack underflow\n" ));
- return FT_THROW( Too_Few_Arguments );
-
- Stack_Overflow:
- FT_TRACE4(( "cff_decoder_parse_charstrings: stack overflow\n" ));
- return FT_THROW( Stack_Overflow );
- }
-
-#endif /* CFF_CONFIG_OPTION_OLD_ENGINE */
-
-
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
@@ -2559,11 +142,14 @@
FT_Int glyph_index;
CFF_Font cff = (CFF_Font)face->other;
+ PSAux_Service psaux = (PSAux_Service)face->psaux;
+ const CFF_Decoder_Funcs decoder_funcs = psaux->cff_decoder_funcs;
+
*max_advance = 0;
/* Initialize load decoder */
- cff_decoder_init( &decoder, face, 0, 0, 0, 0 );
+ decoder_funcs->init( &decoder, face, 0, 0, 0, 0, 0, 0 );
decoder.builder.metrics_only = 1;
decoder.builder.load_points = 0;
@@ -2582,11 +168,12 @@
&charstring, &charstring_len );
if ( !error )
{
- error = cff_decoder_prepare( &decoder, size, glyph_index );
+ error = decoder_funcs->prepare( &decoder, size, glyph_index );
if ( !error )
- error = cff_decoder_parse_charstrings( &decoder,
- charstring,
- charstring_len );
+ error = decoder_funcs->parse_charstrings_old( &decoder,
+ charstring,
+ charstring_len,
+ 0 );
cff_free_glyph_data( face, &charstring, &charstring_len );
}
@@ -2612,10 +199,14 @@
{
FT_Error error;
CFF_Decoder decoder;
+ PS_Decoder psdecoder;
TT_Face face = (TT_Face)glyph->root.face;
FT_Bool hinting, scaled, force_scaling;
CFF_Font cff = (CFF_Font)face->extra.data;
+ PSAux_Service psaux = (PSAux_Service)face->psaux;
+ const CFF_Decoder_Funcs decoder_funcs = psaux->cff_decoder_funcs;
+
FT_Matrix font_matrix;
FT_Vector font_offset;
@@ -2805,7 +396,7 @@
{
#ifdef CFF_CONFIG_OPTION_OLD_ENGINE
- CFF_Driver driver = (CFF_Driver)FT_FACE_DRIVER( face );
+ PS_Driver driver = (PS_Driver)FT_FACE_DRIVER( face );
#endif
@@ -2813,9 +404,12 @@
FT_ULong charstring_len;
- cff_decoder_init( &decoder, face, size, glyph, hinting,
- FT_LOAD_TARGET_MODE( load_flags ) );
+ decoder_funcs->init( &decoder, face, size, glyph, hinting,
+ FT_LOAD_TARGET_MODE( load_flags ),
+ cff_get_glyph_data,
+ cff_free_glyph_data );
+ /* this is for pure CFFs */
if ( load_flags & FT_LOAD_ADVANCE_ONLY )
decoder.width_only = TRUE;
@@ -2828,22 +422,25 @@
if ( error )
goto Glyph_Build_Finished;
- error = cff_decoder_prepare( &decoder, size, glyph_index );
+ error = decoder_funcs->prepare( &decoder, size, glyph_index );
if ( error )
goto Glyph_Build_Finished;
#ifdef CFF_CONFIG_OPTION_OLD_ENGINE
/* choose which CFF renderer to use */
- if ( driver->hinting_engine == FT_CFF_HINTING_FREETYPE )
- error = cff_decoder_parse_charstrings( &decoder,
- charstring,
- charstring_len );
+ if ( driver->hinting_engine == FT_HINTING_FREETYPE )
+ error = decoder_funcs->parse_charstrings_old( &decoder,
+ charstring,
+ charstring_len,
+ 0 );
else
#endif
{
- error = cf2_decoder_parse_charstrings( &decoder,
- charstring,
- charstring_len );
+ psaux->ps_decoder_init( &psdecoder, &decoder, FALSE );
+
+ error = decoder_funcs->parse_charstrings( &psdecoder,
+ charstring,
+ charstring_len );
/* Adobe's engine uses 16.16 numbers everywhere; */
/* as a consequence, glyphs larger than 2000ppem get rejected */
@@ -2856,9 +453,9 @@
force_scaling = TRUE;
glyph->hint = hinting;
- error = cf2_decoder_parse_charstrings( &decoder,
- charstring,
- charstring_len );
+ error = decoder_funcs->parse_charstrings( &psdecoder,
+ charstring,
+ charstring_len );
}
}
@@ -2896,7 +493,7 @@
Glyph_Build_Finished:
/* save new glyph tables, if no error */
if ( !error )
- cff_builder_done( &decoder.builder );
+ decoder.builder.funcs.done( &decoder.builder );
/* XXX: anything to do for broken glyph entry? */
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-23 23:16:25 +0000