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-rw-r--r--src/3rdparty/freetype/src/cff/cf2intrp.c1571
1 files changed, 0 insertions, 1571 deletions
diff --git a/src/3rdparty/freetype/src/cff/cf2intrp.c b/src/3rdparty/freetype/src/cff/cf2intrp.c
deleted file mode 100644
index ff3fa9aaaa..0000000000
--- a/src/3rdparty/freetype/src/cff/cf2intrp.c
+++ /dev/null
@@ -1,1571 +0,0 @@
-/***************************************************************************/
-/* */
-/* cf2intrp.c */
-/* */
-/* Adobe's CFF Interpreter (body). */
-/* */
-/* Copyright 2007-2014 Adobe Systems Incorporated. */
-/* */
-/* This software, and all works of authorship, whether in source or */
-/* object code form as indicated by the copyright notice(s) included */
-/* herein (collectively, the "Work") is made available, and may only be */
-/* used, modified, and distributed under the FreeType Project License, */
-/* LICENSE.TXT. Additionally, subject to the terms and conditions of the */
-/* FreeType Project License, each contributor to the Work hereby grants */
-/* to any individual or legal entity exercising permissions granted by */
-/* the FreeType Project License and this section (hereafter, "You" or */
-/* "Your") a perpetual, worldwide, non-exclusive, no-charge, */
-/* royalty-free, irrevocable (except as stated in this section) patent */
-/* license to make, have made, use, offer to sell, sell, import, and */
-/* otherwise transfer the Work, where such license applies only to those */
-/* patent claims licensable by such contributor that are necessarily */
-/* infringed by their contribution(s) alone or by combination of their */
-/* contribution(s) with the Work to which such contribution(s) was */
-/* submitted. If You institute patent litigation against any entity */
-/* (including a cross-claim or counterclaim in a lawsuit) alleging that */
-/* the Work or a contribution incorporated within the Work constitutes */
-/* direct or contributory patent infringement, then any patent licenses */
-/* granted to You under this License for that Work shall terminate as of */
-/* the date such litigation is filed. */
-/* */
-/* By using, modifying, or distributing the Work you indicate that you */
-/* have read and understood the terms and conditions of the */
-/* FreeType Project License as well as those provided in this section, */
-/* and you accept them fully. */
-/* */
-/***************************************************************************/
-
-
-#include "cf2ft.h"
-#include FT_INTERNAL_DEBUG_H
-
-#include "cf2glue.h"
-#include "cf2font.h"
-#include "cf2stack.h"
-#include "cf2hints.h"
-#include "cf2intrp.h"
-
-#include "cf2error.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_cf2interp
-
-
- /* some operators are not implemented yet */
-#define CF2_FIXME FT_TRACE4(( "cf2_interpT2CharString:" \
- " operator not implemented yet\n" ))
-
-
-
- FT_LOCAL_DEF( void )
- cf2_hintmask_init( CF2_HintMask hintmask,
- FT_Error* error )
- {
- FT_ZERO( hintmask );
-
- hintmask->error = error;
- }
-
-
- FT_LOCAL_DEF( FT_Bool )
- cf2_hintmask_isValid( const CF2_HintMask hintmask )
- {
- return hintmask->isValid;
- }
-
-
- FT_LOCAL_DEF( FT_Bool )
- cf2_hintmask_isNew( const CF2_HintMask hintmask )
- {
- return hintmask->isNew;
- }
-
-
- FT_LOCAL_DEF( void )
- cf2_hintmask_setNew( CF2_HintMask hintmask,
- FT_Bool val )
- {
- hintmask->isNew = val;
- }
-
-
- /* clients call `getMaskPtr' in order to iterate */
- /* through hint mask */
-
- FT_LOCAL_DEF( FT_Byte* )
- cf2_hintmask_getMaskPtr( CF2_HintMask hintmask )
- {
- return hintmask->mask;
- }
-
-
- static size_t
- cf2_hintmask_setCounts( CF2_HintMask hintmask,
- size_t bitCount )
- {
- if ( bitCount > CF2_MAX_HINTS )
- {
- /* total of h and v stems must be <= 96 */
- CF2_SET_ERROR( hintmask->error, Invalid_Glyph_Format );
- return 0;
- }
-
- hintmask->bitCount = bitCount;
- hintmask->byteCount = ( hintmask->bitCount + 7 ) / 8;
-
- hintmask->isValid = TRUE;
- hintmask->isNew = TRUE;
-
- return bitCount;
- }
-
-
- /* consume the hintmask bytes from the charstring, advancing the src */
- /* pointer */
- static void
- cf2_hintmask_read( CF2_HintMask hintmask,
- CF2_Buffer charstring,
- size_t bitCount )
- {
- size_t i;
-
-#ifndef CF2_NDEBUG
- /* these are the bits in the final mask byte that should be zero */
- /* Note: this variable is only used in an assert expression below */
- /* and then only if CF2_NDEBUG is not defined */
- CF2_UInt mask = ( 1 << ( -(CF2_Int)bitCount & 7 ) ) - 1;
-#endif
-
-
- /* initialize counts and isValid */
- if ( cf2_hintmask_setCounts( hintmask, bitCount ) == 0 )
- return;
-
- FT_ASSERT( hintmask->byteCount > 0 );
-
- FT_TRACE4(( " (maskbytes:" ));
-
- /* set mask and advance interpreter's charstring pointer */
- for ( i = 0; i < hintmask->byteCount; i++ )
- {
- hintmask->mask[i] = (FT_Byte)cf2_buf_readByte( charstring );
- FT_TRACE4(( " 0x%02X", hintmask->mask[i] ));
- }
-
- FT_TRACE4(( ")\n" ));
-
- /* assert any unused bits in last byte are zero unless there's a prior */
- /* error */
- /* bitCount -> mask, 0 -> 0, 1 -> 7f, 2 -> 3f, ... 6 -> 3, 7 -> 1 */
-#ifndef CF2_NDEBUG
- FT_ASSERT( ( hintmask->mask[hintmask->byteCount - 1] & mask ) == 0 ||
- *hintmask->error );
-#endif
- }
-
-
- FT_LOCAL_DEF( void )
- cf2_hintmask_setAll( CF2_HintMask hintmask,
- size_t bitCount )
- {
- size_t i;
- CF2_UInt mask = ( 1 << ( -(CF2_Int)bitCount & 7 ) ) - 1;
-
-
- /* initialize counts and isValid */
- if ( cf2_hintmask_setCounts( hintmask, bitCount ) == 0 )
- return;
-
- FT_ASSERT( hintmask->byteCount > 0 );
- FT_ASSERT( hintmask->byteCount <
- sizeof ( hintmask->mask ) / sizeof ( hintmask->mask[0] ) );
-
- /* set mask to all ones */
- for ( i = 0; i < hintmask->byteCount; i++ )
- hintmask->mask[i] = 0xFF;
-
- /* clear unused bits */
- /* bitCount -> mask, 0 -> 0, 1 -> 7f, 2 -> 3f, ... 6 -> 3, 7 -> 1 */
- hintmask->mask[hintmask->byteCount - 1] &= ~mask;
- }
-
-
- /* Type2 charstring opcodes */
- enum
- {
- cf2_cmdRESERVED_0, /* 0 */
- cf2_cmdHSTEM, /* 1 */
- cf2_cmdRESERVED_2, /* 2 */
- cf2_cmdVSTEM, /* 3 */
- cf2_cmdVMOVETO, /* 4 */
- cf2_cmdRLINETO, /* 5 */
- cf2_cmdHLINETO, /* 6 */
- cf2_cmdVLINETO, /* 7 */
- cf2_cmdRRCURVETO, /* 8 */
- cf2_cmdRESERVED_9, /* 9 */
- cf2_cmdCALLSUBR, /* 10 */
- cf2_cmdRETURN, /* 11 */
- cf2_cmdESC, /* 12 */
- cf2_cmdRESERVED_13, /* 13 */
- cf2_cmdENDCHAR, /* 14 */
- cf2_cmdRESERVED_15, /* 15 */
- cf2_cmdRESERVED_16, /* 16 */
- cf2_cmdRESERVED_17, /* 17 */
- cf2_cmdHSTEMHM, /* 18 */
- cf2_cmdHINTMASK, /* 19 */
- cf2_cmdCNTRMASK, /* 20 */
- cf2_cmdRMOVETO, /* 21 */
- cf2_cmdHMOVETO, /* 22 */
- cf2_cmdVSTEMHM, /* 23 */
- cf2_cmdRCURVELINE, /* 24 */
- cf2_cmdRLINECURVE, /* 25 */
- cf2_cmdVVCURVETO, /* 26 */
- cf2_cmdHHCURVETO, /* 27 */
- cf2_cmdEXTENDEDNMBR, /* 28 */
- cf2_cmdCALLGSUBR, /* 29 */
- cf2_cmdVHCURVETO, /* 30 */
- cf2_cmdHVCURVETO /* 31 */
- };
-
- enum
- {
- cf2_escDOTSECTION, /* 0 */
- cf2_escRESERVED_1, /* 1 */
- cf2_escRESERVED_2, /* 2 */
- cf2_escAND, /* 3 */
- cf2_escOR, /* 4 */
- cf2_escNOT, /* 5 */
- cf2_escRESERVED_6, /* 6 */
- cf2_escRESERVED_7, /* 7 */
- cf2_escRESERVED_8, /* 8 */
- cf2_escABS, /* 9 */
- cf2_escADD, /* 10 like otherADD */
- cf2_escSUB, /* 11 like otherSUB */
- cf2_escDIV, /* 12 */
- cf2_escRESERVED_13, /* 13 */
- cf2_escNEG, /* 14 */
- cf2_escEQ, /* 15 */
- cf2_escRESERVED_16, /* 16 */
- cf2_escRESERVED_17, /* 17 */
- cf2_escDROP, /* 18 */
- cf2_escRESERVED_19, /* 19 */
- cf2_escPUT, /* 20 like otherPUT */
- cf2_escGET, /* 21 like otherGET */
- cf2_escIFELSE, /* 22 like otherIFELSE */
- cf2_escRANDOM, /* 23 like otherRANDOM */
- cf2_escMUL, /* 24 like otherMUL */
- cf2_escRESERVED_25, /* 25 */
- cf2_escSQRT, /* 26 */
- cf2_escDUP, /* 27 like otherDUP */
- cf2_escEXCH, /* 28 like otherEXCH */
- cf2_escINDEX, /* 29 */
- cf2_escROLL, /* 30 */
- cf2_escRESERVED_31, /* 31 */
- cf2_escRESERVED_32, /* 32 */
- cf2_escRESERVED_33, /* 33 */
- cf2_escHFLEX, /* 34 */
- cf2_escFLEX, /* 35 */
- cf2_escHFLEX1, /* 36 */
- cf2_escFLEX1 /* 37 */
- };
-
-
- /* `stemHintArray' does not change once we start drawing the outline. */
- static void
- cf2_doStems( const CF2_Font font,
- CF2_Stack opStack,
- CF2_ArrStack stemHintArray,
- CF2_Fixed* width,
- FT_Bool* haveWidth,
- CF2_Fixed hintOffset )
- {
- CF2_UInt i;
- CF2_UInt count = cf2_stack_count( opStack );
- FT_Bool hasWidthArg = (FT_Bool)( count & 1 );
-
- /* variable accumulates delta values from operand stack */
- CF2_Fixed position = hintOffset;
-
- if ( hasWidthArg && ! *haveWidth )
- *width = cf2_stack_getReal( opStack, 0 ) +
- cf2_getNominalWidthX( font->decoder );
-
- if ( font->decoder->width_only )
- goto exit;
-
- for ( i = hasWidthArg ? 1 : 0; i < count; i += 2 )
- {
- /* construct a CF2_StemHint and push it onto the list */
- CF2_StemHintRec stemhint;
-
-
- stemhint.min =
- position += cf2_stack_getReal( opStack, i );
- stemhint.max =
- position += cf2_stack_getReal( opStack, i + 1 );
-
- stemhint.used = FALSE;
- stemhint.maxDS =
- stemhint.minDS = 0;
-
- cf2_arrstack_push( stemHintArray, &stemhint ); /* defer error check */
- }
-
- cf2_stack_clear( opStack );
-
- exit:
- /* cf2_doStems must define a width (may be default) */
- *haveWidth = TRUE;
- }
-
-
- static void
- cf2_doFlex( CF2_Stack opStack,
- CF2_Fixed* curX,
- CF2_Fixed* curY,
- CF2_GlyphPath glyphPath,
- const FT_Bool* readFromStack,
- FT_Bool doConditionalLastRead )
- {
- CF2_Fixed vals[14];
- CF2_UInt index;
- FT_Bool isHFlex;
- CF2_Int top, i, j;
-
-
- vals[0] = *curX;
- vals[1] = *curY;
- index = 0;
- isHFlex = readFromStack[9] == FALSE;
- top = isHFlex ? 9 : 10;
-
- for ( i = 0; i < top; i++ )
- {
- vals[i + 2] = vals[i];
- if ( readFromStack[i] )
- vals[i + 2] += cf2_stack_getReal( opStack, index++ );
- }
-
- if ( isHFlex )
- vals[9 + 2] = *curY;
-
- if ( doConditionalLastRead )
- {
- FT_Bool lastIsX = (FT_Bool)( cf2_fixedAbs( vals[10] - *curX ) >
- cf2_fixedAbs( vals[11] - *curY ) );
- CF2_Fixed lastVal = cf2_stack_getReal( opStack, index );
-
-
- if ( lastIsX )
- {
- vals[12] = vals[10] + lastVal;
- vals[13] = *curY;
- }
- else
- {
- vals[12] = *curX;
- vals[13] = vals[11] + lastVal;
- }
- }
- else
- {
- if ( readFromStack[10] )
- vals[12] = vals[10] + cf2_stack_getReal( opStack, index++ );
- else
- vals[12] = *curX;
-
- if ( readFromStack[11] )
- vals[13] = vals[11] + cf2_stack_getReal( opStack, index );
- else
- vals[13] = *curY;
- }
-
- for ( j = 0; j < 2; j++ )
- cf2_glyphpath_curveTo( glyphPath, vals[j * 6 + 2],
- vals[j * 6 + 3],
- vals[j * 6 + 4],
- vals[j * 6 + 5],
- vals[j * 6 + 6],
- vals[j * 6 + 7] );
-
- cf2_stack_clear( opStack );
-
- *curX = vals[12];
- *curY = vals[13];
- }
-
-
- /*
- * `error' is a shared error code used by many objects in this
- * routine. Before the code continues from an error, it must check and
- * record the error in `*error'. The idea is that this shared
- * error code will record the first error encountered. If testing
- * for an error anyway, the cost of `goto exit' is small, so we do it,
- * even if continuing would be safe. In this case, `lastError' is
- * set, so the testing and storing can be done in one place, at `exit'.
- *
- * Continuing after an error is intended for objects which do their own
- * testing of `*error', e.g., array stack functions. This allows us to
- * avoid an extra test after the call.
- *
- * Unimplemented opcodes are ignored.
- *
- */
- FT_LOCAL_DEF( void )
- cf2_interpT2CharString( CF2_Font font,
- CF2_Buffer buf,
- CF2_OutlineCallbacks callbacks,
- const FT_Vector* translation,
- FT_Bool doingSeac,
- CF2_Fixed curX,
- CF2_Fixed curY,
- CF2_Fixed* width )
- {
- /* lastError is used for errors that are immediately tested */
- FT_Error lastError = FT_Err_Ok;
-
- /* pointer to parsed font object */
- CFF_Decoder* decoder = font->decoder;
-
- FT_Error* error = &font->error;
- FT_Memory memory = font->memory;
-
- CF2_Fixed scaleY = font->innerTransform.d;
- CF2_Fixed nominalWidthX = cf2_getNominalWidthX( decoder );
-
- /* save this for hinting seac accents */
- CF2_Fixed hintOriginY = curY;
-
- CF2_Stack opStack = NULL;
- FT_Byte op1; /* first opcode byte */
-
- /* instruction limit; 20,000,000 matches Avalon */
- FT_UInt32 instructionLimit = 20000000UL;
-
- CF2_ArrStackRec subrStack;
-
- FT_Bool haveWidth;
- CF2_Buffer charstring = NULL;
-
- CF2_Int charstringIndex = -1; /* initialize to empty */
-
- /* TODO: placeholders for hint structures */
-
- /* objects used for hinting */
- CF2_ArrStackRec hStemHintArray;
- CF2_ArrStackRec vStemHintArray;
-
- CF2_HintMaskRec hintMask;
- CF2_GlyphPathRec glyphPath;
-
-
- /* initialize the remaining objects */
- cf2_arrstack_init( &subrStack,
- memory,
- error,
- sizeof ( CF2_BufferRec ) );
- cf2_arrstack_init( &hStemHintArray,
- memory,
- error,
- sizeof ( CF2_StemHintRec ) );
- cf2_arrstack_init( &vStemHintArray,
- memory,
- error,
- sizeof ( CF2_StemHintRec ) );
-
- /* initialize CF2_StemHint arrays */
- cf2_hintmask_init( &hintMask, error );
-
- /* initialize path map to manage drawing operations */
-
- /* Note: last 4 params are used to handle `MoveToPermissive', which */
- /* may need to call `hintMap.Build' */
- /* TODO: MoveToPermissive is gone; are these still needed? */
- cf2_glyphpath_init( &glyphPath,
- font,
- callbacks,
- scaleY,
- /* hShift, */
- &hStemHintArray,
- &vStemHintArray,
- &hintMask,
- hintOriginY,
- &font->blues,
- translation );
-
- /*
- * Initialize state for width parsing. From the CFF Spec:
- *
- * The first stack-clearing operator, which must be one of hstem,
- * hstemhm, vstem, vstemhm, cntrmask, hintmask, hmoveto, vmoveto,
- * rmoveto, or endchar, takes an additional argument - the width (as
- * described earlier), which may be expressed as zero or one numeric
- * argument.
- *
- * What we implement here uses the first validly specified width, but
- * does not detect errors for specifying more than one width.
- *
- * If one of the above operators occurs without explicitly specifying
- * a width, we assume the default width.
- *
- */
- haveWidth = FALSE;
- *width = cf2_getDefaultWidthX( decoder );
-
- /*
- * Note: at this point, all pointers to resources must be NULL
- * and all local objects must be initialized.
- * There must be no branches to exit: above this point.
- *
- */
-
- /* allocate an operand stack */
- opStack = cf2_stack_init( memory, error );
- if ( !opStack )
- {
- lastError = FT_THROW( Out_Of_Memory );
- goto exit;
- }
-
- /* initialize subroutine stack by placing top level charstring as */
- /* first element (max depth plus one for the charstring) */
- /* Note: Caller owns and must finalize the first charstring. */
- /* Our copy of it does not change that requirement. */
- cf2_arrstack_setCount( &subrStack, CF2_MAX_SUBR + 1 );
-
- charstring = (CF2_Buffer)cf2_arrstack_getBuffer( &subrStack );
- *charstring = *buf; /* structure copy */
-
- charstringIndex = 0; /* entry is valid now */
-
- /* catch errors so far */
- if ( *error )
- goto exit;
-
- /* main interpreter loop */
- while ( 1 )
- {
- if ( cf2_buf_isEnd( charstring ) )
- {
- /* If we've reached the end of the charstring, simulate a */
- /* cf2_cmdRETURN or cf2_cmdENDCHAR. */
- if ( charstringIndex )
- op1 = cf2_cmdRETURN; /* end of buffer for subroutine */
- else
- op1 = cf2_cmdENDCHAR; /* end of buffer for top level charstring */
- }
- else
- op1 = (FT_Byte)cf2_buf_readByte( charstring );
-
- /* check for errors once per loop */
- if ( *error )
- goto exit;
-
- instructionLimit--;
- if ( instructionLimit == 0 )
- {
- lastError = FT_THROW( Invalid_Glyph_Format );
- goto exit;
- }
-
- switch( op1 )
- {
- case cf2_cmdRESERVED_0:
- case cf2_cmdRESERVED_2:
- case cf2_cmdRESERVED_9:
- case cf2_cmdRESERVED_13:
- case cf2_cmdRESERVED_15:
- case cf2_cmdRESERVED_16:
- case cf2_cmdRESERVED_17:
- /* we may get here if we have a prior error */
- FT_TRACE4(( " unknown op (%d)\n", op1 ));
- break;
-
- case cf2_cmdHSTEMHM:
- case cf2_cmdHSTEM:
- FT_TRACE4(( op1 == cf2_cmdHSTEMHM ? " hstemhm\n" : " hstem\n" ));
-
- /* never add hints after the mask is computed */
- if ( cf2_hintmask_isValid( &hintMask ) )
- {
- FT_TRACE4(( "cf2_interpT2CharString:"
- " invalid horizontal hint mask\n" ));
- break;
- }
-
- cf2_doStems( font,
- opStack,
- &hStemHintArray,
- width,
- &haveWidth,
- 0 );
-
- if ( font->decoder->width_only )
- goto exit;
-
- break;
-
- case cf2_cmdVSTEMHM:
- case cf2_cmdVSTEM:
- FT_TRACE4(( op1 == cf2_cmdVSTEMHM ? " vstemhm\n" : " vstem\n" ));
-
- /* never add hints after the mask is computed */
- if ( cf2_hintmask_isValid( &hintMask ) )
- {
- FT_TRACE4(( "cf2_interpT2CharString:"
- " invalid vertical hint mask\n" ));
- break;
- }
-
- cf2_doStems( font,
- opStack,
- &vStemHintArray,
- width,
- &haveWidth,
- 0 );
-
- if ( font->decoder->width_only )
- goto exit;
-
- break;
-
- case cf2_cmdVMOVETO:
- FT_TRACE4(( " vmoveto\n" ));
-
- if ( cf2_stack_count( opStack ) > 1 && !haveWidth )
- *width = cf2_stack_getReal( opStack, 0 ) + nominalWidthX;
-
- /* width is defined or default after this */
- haveWidth = TRUE;
-
- if ( font->decoder->width_only )
- goto exit;
-
- curY += cf2_stack_popFixed( opStack );
-
- cf2_glyphpath_moveTo( &glyphPath, curX, curY );
-
- break;
-
- case cf2_cmdRLINETO:
- {
- CF2_UInt index;
- CF2_UInt count = cf2_stack_count( opStack );
-
-
- FT_TRACE4(( " rlineto\n" ));
-
- for ( index = 0; index < count; index += 2 )
- {
- curX += cf2_stack_getReal( opStack, index + 0 );
- curY += cf2_stack_getReal( opStack, index + 1 );
-
- cf2_glyphpath_lineTo( &glyphPath, curX, curY );
- }
-
- cf2_stack_clear( opStack );
- }
- continue; /* no need to clear stack again */
-
- case cf2_cmdHLINETO:
- case cf2_cmdVLINETO:
- {
- CF2_UInt index;
- CF2_UInt count = cf2_stack_count( opStack );
-
- FT_Bool isX = op1 == cf2_cmdHLINETO;
-
-
- FT_TRACE4(( isX ? " hlineto\n" : " vlineto\n" ));
-
- for ( index = 0; index < count; index++ )
- {
- CF2_Fixed v = cf2_stack_getReal( opStack, index );
-
-
- if ( isX )
- curX += v;
- else
- curY += v;
-
- isX = !isX;
-
- cf2_glyphpath_lineTo( &glyphPath, curX, curY );
- }
-
- cf2_stack_clear( opStack );
- }
- continue;
-
- case cf2_cmdRCURVELINE:
- case cf2_cmdRRCURVETO:
- {
- CF2_UInt count = cf2_stack_count( opStack );
- CF2_UInt index = 0;
-
-
- FT_TRACE4(( op1 == cf2_cmdRCURVELINE ? " rcurveline\n"
- : " rrcurveto\n" ));
-
- while ( index + 6 <= count )
- {
- CF2_Fixed x1 = cf2_stack_getReal( opStack, index + 0 ) + curX;
- CF2_Fixed y1 = cf2_stack_getReal( opStack, index + 1 ) + curY;
- CF2_Fixed x2 = cf2_stack_getReal( opStack, index + 2 ) + x1;
- CF2_Fixed y2 = cf2_stack_getReal( opStack, index + 3 ) + y1;
- CF2_Fixed x3 = cf2_stack_getReal( opStack, index + 4 ) + x2;
- CF2_Fixed y3 = cf2_stack_getReal( opStack, index + 5 ) + y2;
-
-
- cf2_glyphpath_curveTo( &glyphPath, x1, y1, x2, y2, x3, y3 );
-
- curX = x3;
- curY = y3;
- index += 6;
- }
-
- if ( op1 == cf2_cmdRCURVELINE )
- {
- curX += cf2_stack_getReal( opStack, index + 0 );
- curY += cf2_stack_getReal( opStack, index + 1 );
-
- cf2_glyphpath_lineTo( &glyphPath, curX, curY );
- }
-
- cf2_stack_clear( opStack );
- }
- continue; /* no need to clear stack again */
-
- case cf2_cmdCALLGSUBR:
- case cf2_cmdCALLSUBR:
- {
- CF2_UInt subrIndex;
-
-
- FT_TRACE4(( op1 == cf2_cmdCALLGSUBR ? " callgsubr"
- : " callsubr" ));
-
- if ( charstringIndex > CF2_MAX_SUBR )
- {
- /* max subr plus one for charstring */
- lastError = FT_THROW( Invalid_Glyph_Format );
- goto exit; /* overflow of stack */
- }
-
- /* push our current CFF charstring region on subrStack */
- charstring = (CF2_Buffer)
- cf2_arrstack_getPointer(
- &subrStack,
- (size_t)charstringIndex + 1 );
-
- /* set up the new CFF region and pointer */
- subrIndex = (CF2_UInt)cf2_stack_popInt( opStack );
-
- switch ( op1 )
- {
- case cf2_cmdCALLGSUBR:
- FT_TRACE4(( " (idx %d, entering level %d)\n",
- subrIndex + (CF2_UInt)decoder->globals_bias,
- charstringIndex + 1 ));
-
- if ( cf2_initGlobalRegionBuffer( decoder,
- subrIndex,
- charstring ) )
- {
- lastError = FT_THROW( Invalid_Glyph_Format );
- goto exit; /* subroutine lookup or stream error */
- }
- break;
-
- default:
- /* cf2_cmdCALLSUBR */
- FT_TRACE4(( " (idx %d, entering level %d)\n",
- subrIndex + (CF2_UInt)decoder->locals_bias,
- charstringIndex + 1 ));
-
- if ( cf2_initLocalRegionBuffer( decoder,
- subrIndex,
- charstring ) )
- {
- lastError = FT_THROW( Invalid_Glyph_Format );
- goto exit; /* subroutine lookup or stream error */
- }
- }
-
- charstringIndex += 1; /* entry is valid now */
- }
- continue; /* do not clear the stack */
-
- case cf2_cmdRETURN:
- FT_TRACE4(( " return (leaving level %d)\n", charstringIndex ));
-
- if ( charstringIndex < 1 )
- {
- /* Note: cannot return from top charstring */
- lastError = FT_THROW( Invalid_Glyph_Format );
- goto exit; /* underflow of stack */
- }
-
- /* restore position in previous charstring */
- charstring = (CF2_Buffer)
- cf2_arrstack_getPointer(
- &subrStack,
- (CF2_UInt)--charstringIndex );
- continue; /* do not clear the stack */
-
- case cf2_cmdESC:
- {
- FT_Byte op2 = (FT_Byte)cf2_buf_readByte( charstring );
-
-
- switch ( op2 )
- {
- case cf2_escDOTSECTION:
- /* something about `flip type of locking' -- ignore it */
- FT_TRACE4(( " dotsection\n" ));
-
- break;
-
- /* TODO: should these operators be supported? */
- case cf2_escAND: /* in spec */
- FT_TRACE4(( " and\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escOR: /* in spec */
- FT_TRACE4(( " or\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escNOT: /* in spec */
- FT_TRACE4(( " not\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escABS: /* in spec */
- FT_TRACE4(( " abs\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escADD: /* in spec */
- FT_TRACE4(( " add\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escSUB: /* in spec */
- FT_TRACE4(( " sub\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escDIV: /* in spec */
- FT_TRACE4(( " div\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escNEG: /* in spec */
- FT_TRACE4(( " neg\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escEQ: /* in spec */
- FT_TRACE4(( " eq\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escDROP: /* in spec */
- FT_TRACE4(( " drop\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escPUT: /* in spec */
- FT_TRACE4(( " put\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escGET: /* in spec */
- FT_TRACE4(( " get\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escIFELSE: /* in spec */
- FT_TRACE4(( " ifelse\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escRANDOM: /* in spec */
- FT_TRACE4(( " random\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escMUL: /* in spec */
- FT_TRACE4(( " mul\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escSQRT: /* in spec */
- FT_TRACE4(( " sqrt\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escDUP: /* in spec */
- FT_TRACE4(( " dup\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escEXCH: /* in spec */
- FT_TRACE4(( " exch\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escINDEX: /* in spec */
- FT_TRACE4(( " index\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escROLL: /* in spec */
- FT_TRACE4(( " roll\n" ));
-
- CF2_FIXME;
- break;
-
- case cf2_escHFLEX:
- {
- static const FT_Bool readFromStack[12] =
- {
- TRUE /* dx1 */, FALSE /* dy1 */,
- TRUE /* dx2 */, TRUE /* dy2 */,
- TRUE /* dx3 */, FALSE /* dy3 */,
- TRUE /* dx4 */, FALSE /* dy4 */,
- TRUE /* dx5 */, FALSE /* dy5 */,
- TRUE /* dx6 */, FALSE /* dy6 */
- };
-
-
- FT_TRACE4(( " hflex\n" ));
-
- cf2_doFlex( opStack,
- &curX,
- &curY,
- &glyphPath,
- readFromStack,
- FALSE /* doConditionalLastRead */ );
- }
- continue;
-
- case cf2_escFLEX:
- {
- static const FT_Bool readFromStack[12] =
- {
- TRUE /* dx1 */, TRUE /* dy1 */,
- TRUE /* dx2 */, TRUE /* dy2 */,
- TRUE /* dx3 */, TRUE /* dy3 */,
- TRUE /* dx4 */, TRUE /* dy4 */,
- TRUE /* dx5 */, TRUE /* dy5 */,
- TRUE /* dx6 */, TRUE /* dy6 */
- };
-
-
- FT_TRACE4(( " flex\n" ));
-
- cf2_doFlex( opStack,
- &curX,
- &curY,
- &glyphPath,
- readFromStack,
- FALSE /* doConditionalLastRead */ );
- }
- break; /* TODO: why is this not a continue? */
-
- case cf2_escHFLEX1:
- {
- static const FT_Bool readFromStack[12] =
- {
- TRUE /* dx1 */, TRUE /* dy1 */,
- TRUE /* dx2 */, TRUE /* dy2 */,
- TRUE /* dx3 */, FALSE /* dy3 */,
- TRUE /* dx4 */, FALSE /* dy4 */,
- TRUE /* dx5 */, TRUE /* dy5 */,
- TRUE /* dx6 */, FALSE /* dy6 */
- };
-
-
- FT_TRACE4(( " hflex1\n" ));
-
- cf2_doFlex( opStack,
- &curX,
- &curY,
- &glyphPath,
- readFromStack,
- FALSE /* doConditionalLastRead */ );
- }
- continue;
-
- case cf2_escFLEX1:
- {
- static const FT_Bool readFromStack[12] =
- {
- TRUE /* dx1 */, TRUE /* dy1 */,
- TRUE /* dx2 */, TRUE /* dy2 */,
- TRUE /* dx3 */, TRUE /* dy3 */,
- TRUE /* dx4 */, TRUE /* dy4 */,
- TRUE /* dx5 */, TRUE /* dy5 */,
- FALSE /* dx6 */, FALSE /* dy6 */
- };
-
-
- FT_TRACE4(( " flex1\n" ));
-
- cf2_doFlex( opStack,
- &curX,
- &curY,
- &glyphPath,
- readFromStack,
- TRUE /* doConditionalLastRead */ );
- }
- continue;
-
- case cf2_escRESERVED_1:
- case cf2_escRESERVED_2:
- case cf2_escRESERVED_6:
- case cf2_escRESERVED_7:
- case cf2_escRESERVED_8:
- case cf2_escRESERVED_13:
- case cf2_escRESERVED_16:
- case cf2_escRESERVED_17:
- case cf2_escRESERVED_19:
- case cf2_escRESERVED_25:
- case cf2_escRESERVED_31:
- case cf2_escRESERVED_32:
- case cf2_escRESERVED_33:
- default:
- FT_TRACE4(( " unknown op (12, %d)\n", op2 ));
-
- }; /* end of switch statement checking `op2' */
-
- } /* case cf2_cmdESC */
- break;
-
- case cf2_cmdENDCHAR:
- FT_TRACE4(( " endchar\n" ));
-
- if ( cf2_stack_count( opStack ) == 1 ||
- cf2_stack_count( opStack ) == 5 )
- {
- if ( !haveWidth )
- *width = cf2_stack_getReal( opStack, 0 ) + nominalWidthX;
- }
-
- /* width is defined or default after this */
- haveWidth = TRUE;
-
- if ( font->decoder->width_only )
- goto exit;
-
- /* close path if still open */
- cf2_glyphpath_closeOpenPath( &glyphPath );
-
- if ( cf2_stack_count( opStack ) > 1 )
- {
- /* must be either 4 or 5 -- */
- /* this is a (deprecated) implied `seac' operator */
-
- CF2_Int achar;
- CF2_Int bchar;
- CF2_BufferRec component;
- CF2_Fixed dummyWidth; /* ignore component width */
- FT_Error error2;
-
-
- if ( doingSeac )
- {
- lastError = FT_THROW( Invalid_Glyph_Format );
- goto exit; /* nested seac */
- }
-
- achar = cf2_stack_popInt( opStack );
- bchar = cf2_stack_popInt( opStack );
-
- curY = cf2_stack_popFixed( opStack );
- curX = cf2_stack_popFixed( opStack );
-
- error2 = cf2_getSeacComponent( decoder, achar, &component );
- if ( error2 )
- {
- lastError = error2; /* pass FreeType error through */
- goto exit;
- }
- cf2_interpT2CharString( font,
- &component,
- callbacks,
- translation,
- TRUE,
- curX,
- curY,
- &dummyWidth );
- cf2_freeSeacComponent( decoder, &component );
-
- error2 = cf2_getSeacComponent( decoder, bchar, &component );
- if ( error2 )
- {
- lastError = error2; /* pass FreeType error through */
- goto exit;
- }
- cf2_interpT2CharString( font,
- &component,
- callbacks,
- translation,
- TRUE,
- 0,
- 0,
- &dummyWidth );
- cf2_freeSeacComponent( decoder, &component );
- }
- goto exit;
-
- case cf2_cmdCNTRMASK:
- case cf2_cmdHINTMASK:
- /* the final \n in the tracing message gets added in */
- /* `cf2_hintmask_read' (which also traces the mask bytes) */
- FT_TRACE4(( op1 == cf2_cmdCNTRMASK ? " cntrmask" : " hintmask" ));
-
- /* never add hints after the mask is computed */
- if ( cf2_stack_count( opStack ) > 1 &&
- cf2_hintmask_isValid( &hintMask ) )
- {
- FT_TRACE4(( "cf2_interpT2CharString: invalid hint mask\n" ));
- break;
- }
-
- /* if there are arguments on the stack, there this is an */
- /* implied cf2_cmdVSTEMHM */
- cf2_doStems( font,
- opStack,
- &vStemHintArray,
- width,
- &haveWidth,
- 0 );
-
- if ( font->decoder->width_only )
- goto exit;
-
- if ( op1 == cf2_cmdHINTMASK )
- {
- /* consume the hint mask bytes which follow the operator */
- cf2_hintmask_read( &hintMask,
- charstring,
- cf2_arrstack_size( &hStemHintArray ) +
- cf2_arrstack_size( &vStemHintArray ) );
- }
- else
- {
- /*
- * Consume the counter mask bytes which follow the operator:
- * Build a temporary hint map, just to place and lock those
- * stems participating in the counter mask. These are most
- * likely the dominant hstems, and are grouped together in a
- * few counter groups, not necessarily in correspondence
- * with the hint groups. This reduces the chances of
- * conflicts between hstems that are initially placed in
- * separate hint groups and then brought together. The
- * positions are copied back to `hStemHintArray', so we can
- * discard `counterMask' and `counterHintMap'.
- *
- */
- CF2_HintMapRec counterHintMap;
- CF2_HintMaskRec counterMask;
-
-
- cf2_hintmap_init( &counterHintMap,
- font,
- &glyphPath.initialHintMap,
- &glyphPath.hintMoves,
- scaleY );
- cf2_hintmask_init( &counterMask, error );
-
- cf2_hintmask_read( &counterMask,
- charstring,
- cf2_arrstack_size( &hStemHintArray ) +
- cf2_arrstack_size( &vStemHintArray ) );
- cf2_hintmap_build( &counterHintMap,
- &hStemHintArray,
- &vStemHintArray,
- &counterMask,
- 0,
- FALSE );
- }
- break;
-
- case cf2_cmdRMOVETO:
- FT_TRACE4(( " rmoveto\n" ));
-
- if ( cf2_stack_count( opStack ) > 2 && !haveWidth )
- *width = cf2_stack_getReal( opStack, 0 ) + nominalWidthX;
-
- /* width is defined or default after this */
- haveWidth = TRUE;
-
- if ( font->decoder->width_only )
- goto exit;
-
- curY += cf2_stack_popFixed( opStack );
- curX += cf2_stack_popFixed( opStack );
-
- cf2_glyphpath_moveTo( &glyphPath, curX, curY );
-
- break;
-
- case cf2_cmdHMOVETO:
- FT_TRACE4(( " hmoveto\n" ));
-
- if ( cf2_stack_count( opStack ) > 1 && !haveWidth )
- *width = cf2_stack_getReal( opStack, 0 ) + nominalWidthX;
-
- /* width is defined or default after this */
- haveWidth = TRUE;
-
- if ( font->decoder->width_only )
- goto exit;
-
- curX += cf2_stack_popFixed( opStack );
-
- cf2_glyphpath_moveTo( &glyphPath, curX, curY );
-
- break;
-
- case cf2_cmdRLINECURVE:
- {
- CF2_UInt count = cf2_stack_count( opStack );
- CF2_UInt index = 0;
-
-
- FT_TRACE4(( " rlinecurve\n" ));
-
- while ( index + 6 < count )
- {
- curX += cf2_stack_getReal( opStack, index + 0 );
- curY += cf2_stack_getReal( opStack, index + 1 );
-
- cf2_glyphpath_lineTo( &glyphPath, curX, curY );
- index += 2;
- }
-
- while ( index < count )
- {
- CF2_Fixed x1 = cf2_stack_getReal( opStack, index + 0 ) + curX;
- CF2_Fixed y1 = cf2_stack_getReal( opStack, index + 1 ) + curY;
- CF2_Fixed x2 = cf2_stack_getReal( opStack, index + 2 ) + x1;
- CF2_Fixed y2 = cf2_stack_getReal( opStack, index + 3 ) + y1;
- CF2_Fixed x3 = cf2_stack_getReal( opStack, index + 4 ) + x2;
- CF2_Fixed y3 = cf2_stack_getReal( opStack, index + 5 ) + y2;
-
-
- cf2_glyphpath_curveTo( &glyphPath, x1, y1, x2, y2, x3, y3 );
-
- curX = x3;
- curY = y3;
- index += 6;
- }
-
- cf2_stack_clear( opStack );
- }
- continue; /* no need to clear stack again */
-
- case cf2_cmdVVCURVETO:
- {
- CF2_UInt count, count1 = cf2_stack_count( opStack );
- CF2_UInt index = 0;
-
-
- /* if `cf2_stack_count' isn't of the form 4n or 4n+1, */
- /* we enforce it by clearing the second bit */
- /* (and sorting the stack indexing to suit) */
- count = count1 & ~2U;
- index += count1 - count;
-
- FT_TRACE4(( " vvcurveto\n" ));
-
- while ( index < count )
- {
- CF2_Fixed x1, y1, x2, y2, x3, y3;
-
-
- if ( ( count - index ) & 1 )
- {
- x1 = cf2_stack_getReal( opStack, index ) + curX;
-
- ++index;
- }
- else
- x1 = curX;
-
- y1 = cf2_stack_getReal( opStack, index + 0 ) + curY;
- x2 = cf2_stack_getReal( opStack, index + 1 ) + x1;
- y2 = cf2_stack_getReal( opStack, index + 2 ) + y1;
- x3 = x2;
- y3 = cf2_stack_getReal( opStack, index + 3 ) + y2;
-
- cf2_glyphpath_curveTo( &glyphPath, x1, y1, x2, y2, x3, y3 );
-
- curX = x3;
- curY = y3;
- index += 4;
- }
-
- cf2_stack_clear( opStack );
- }
- continue; /* no need to clear stack again */
-
- case cf2_cmdHHCURVETO:
- {
- CF2_UInt count, count1 = cf2_stack_count( opStack );
- CF2_UInt index = 0;
-
-
- /* if `cf2_stack_count' isn't of the form 4n or 4n+1, */
- /* we enforce it by clearing the second bit */
- /* (and sorting the stack indexing to suit) */
- count = count1 & ~2U;
- index += count1 - count;
-
- FT_TRACE4(( " hhcurveto\n" ));
-
- while ( index < count )
- {
- CF2_Fixed x1, y1, x2, y2, x3, y3;
-
-
- if ( ( count - index ) & 1 )
- {
- y1 = cf2_stack_getReal( opStack, index ) + curY;
-
- ++index;
- }
- else
- y1 = curY;
-
- x1 = cf2_stack_getReal( opStack, index + 0 ) + curX;
- x2 = cf2_stack_getReal( opStack, index + 1 ) + x1;
- y2 = cf2_stack_getReal( opStack, index + 2 ) + y1;
- x3 = cf2_stack_getReal( opStack, index + 3 ) + x2;
- y3 = y2;
-
- cf2_glyphpath_curveTo( &glyphPath, x1, y1, x2, y2, x3, y3 );
-
- curX = x3;
- curY = y3;
- index += 4;
- }
-
- cf2_stack_clear( opStack );
- }
- continue; /* no need to clear stack again */
-
- case cf2_cmdVHCURVETO:
- case cf2_cmdHVCURVETO:
- {
- CF2_UInt count, count1 = cf2_stack_count( opStack );
- CF2_UInt index = 0;
-
- FT_Bool alternate = op1 == cf2_cmdHVCURVETO;
-
-
- /* if `cf2_stack_count' isn't of the form 8n, 8n+1, */
- /* 8n+4, or 8n+5, we enforce it by clearing the */
- /* second bit */
- /* (and sorting the stack indexing to suit) */
- count = count1 & ~2U;
- index += count1 - count;
-
- FT_TRACE4(( alternate ? " hvcurveto\n" : " vhcurveto\n" ));
-
- while ( index < count )
- {
- CF2_Fixed x1, x2, x3, y1, y2, y3;
-
-
- if ( alternate )
- {
- x1 = cf2_stack_getReal( opStack, index + 0 ) + curX;
- y1 = curY;
- x2 = cf2_stack_getReal( opStack, index + 1 ) + x1;
- y2 = cf2_stack_getReal( opStack, index + 2 ) + y1;
- y3 = cf2_stack_getReal( opStack, index + 3 ) + y2;
-
- if ( count - index == 5 )
- {
- x3 = cf2_stack_getReal( opStack, index + 4 ) + x2;
-
- ++index;
- }
- else
- x3 = x2;
-
- alternate = FALSE;
- }
- else
- {
- x1 = curX;
- y1 = cf2_stack_getReal( opStack, index + 0 ) + curY;
- x2 = cf2_stack_getReal( opStack, index + 1 ) + x1;
- y2 = cf2_stack_getReal( opStack, index + 2 ) + y1;
- x3 = cf2_stack_getReal( opStack, index + 3 ) + x2;
-
- if ( count - index == 5 )
- {
- y3 = cf2_stack_getReal( opStack, index + 4 ) + y2;
-
- ++index;
- }
- else
- y3 = y2;
-
- alternate = TRUE;
- }
-
- cf2_glyphpath_curveTo( &glyphPath, x1, y1, x2, y2, x3, y3 );
-
- curX = x3;
- curY = y3;
- index += 4;
- }
-
- cf2_stack_clear( opStack );
- }
- continue; /* no need to clear stack again */
-
- case cf2_cmdEXTENDEDNMBR:
- {
- CF2_Int v;
-
-
- v = (FT_Short)( ( cf2_buf_readByte( charstring ) << 8 ) |
- cf2_buf_readByte( charstring ) );
-
- FT_TRACE4(( " %d", v ));
-
- cf2_stack_pushInt( opStack, v );
- }
- continue;
-
- default:
- /* numbers */
- {
- if ( /* op1 >= 32 && */ op1 <= 246 )
- {
- CF2_Int v;
-
-
- v = op1 - 139;
-
- FT_TRACE4(( " %d", v ));
-
- /* -107 .. 107 */
- cf2_stack_pushInt( opStack, v );
- }
-
- else if ( /* op1 >= 247 && */ op1 <= 250 )
- {
- CF2_Int v;
-
-
- v = op1;
- v -= 247;
- v *= 256;
- v += cf2_buf_readByte( charstring );
- v += 108;
-
- FT_TRACE4(( " %d", v ));
-
- /* 108 .. 1131 */
- cf2_stack_pushInt( opStack, v );
- }
-
- else if ( /* op1 >= 251 && */ op1 <= 254 )
- {
- CF2_Int v;
-
-
- v = op1;
- v -= 251;
- v *= 256;
- v += cf2_buf_readByte( charstring );
- v = -v - 108;
-
- FT_TRACE4(( " %d", v ));
-
- /* -1131 .. -108 */
- cf2_stack_pushInt( opStack, v );
- }
-
- else /* op1 == 255 */
- {
- CF2_Fixed v;
-
-
- v = (CF2_Fixed)
- ( ( (FT_UInt32)cf2_buf_readByte( charstring ) << 24 ) |
- ( (FT_UInt32)cf2_buf_readByte( charstring ) << 16 ) |
- ( (FT_UInt32)cf2_buf_readByte( charstring ) << 8 ) |
- (FT_UInt32)cf2_buf_readByte( charstring ) );
-
- FT_TRACE4(( " %.2f", v / 65536.0 ));
-
- cf2_stack_pushFixed( opStack, v );
- }
- }
- continue; /* don't clear stack */
-
- } /* end of switch statement checking `op1' */
-
- cf2_stack_clear( opStack );
-
- } /* end of main interpreter loop */
-
- /* we get here if the charstring ends without cf2_cmdENDCHAR */
- FT_TRACE4(( "cf2_interpT2CharString:"
- " charstring ends without ENDCHAR\n" ));
-
- exit:
- /* check whether last error seen is also the first one */
- cf2_setError( error, lastError );
-
- /* free resources from objects we've used */
- cf2_glyphpath_finalize( &glyphPath );
- cf2_arrstack_finalize( &vStemHintArray );
- cf2_arrstack_finalize( &hStemHintArray );
- cf2_arrstack_finalize( &subrStack );
- cf2_stack_free( opStack );
-
- FT_TRACE4(( "\n" ));
-
- return;
- }
-
-
-/* END */
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 15:11:42 +0000