ReactOS 0.4.15-dev-8093-g3285f69
gxvmort0.c
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1/***************************************************************************/
2/* */
3/* gxvmort0.c */
4/* */
5/* TrueTypeGX/AAT mort table validation */
6/* body for type0 (Indic Script Rearrangement) subtable. */
7/* */
8/* Copyright 2005-2018 by */
9/* suzuki toshiya, Masatake YAMATO, Red Hat K.K., */
10/* David Turner, Robert Wilhelm, and Werner Lemberg. */
11/* */
12/* This file is part of the FreeType project, and may only be used, */
13/* modified, and distributed under the terms of the FreeType project */
14/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
15/* this file you indicate that you have read the license and */
16/* understand and accept it fully. */
17/* */
18/***************************************************************************/
19
20/***************************************************************************/
21/* */
22/* gxvalid is derived from both gxlayout module and otvalid module. */
23/* Development of gxlayout is supported by the Information-technology */
24/* Promotion Agency(IPA), Japan. */
25/* */
26/***************************************************************************/
27
28
29#include "gxvmort.h"
30
31
32 /*************************************************************************/
33 /* */
34 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
35 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
36 /* messages during execution. */
37 /* */
38#undef FT_COMPONENT
39#define FT_COMPONENT trace_gxvmort
40
41
42 static const char* GXV_Mort_IndicScript_Msg[] =
43 {
44 "no change",
45 "Ax => xA",
46 "xD => Dx",
47 "AxD => DxA",
48 "ABx => xAB",
49 "ABx => xBA",
50 "xCD => CDx",
51 "xCD => DCx",
52 "AxCD => CDxA",
53 "AxCD => DCxA",
54 "ABxD => DxAB",
55 "ABxD => DxBA",
56 "ABxCD => CDxAB",
57 "ABxCD => CDxBA",
58 "ABxCD => DCxAB",
59 "ABxCD => DCxBA",
60
61 };
62
63
64 static void
71 GXV_Validator gxvalid )
72 {
73 FT_UShort markFirst;
74 FT_UShort dontAdvance;
75 FT_UShort markLast;
77 FT_UShort verb = 0;
78
82
83 FT_UNUSED( GXV_Mort_IndicScript_Msg[verb] ); /* for the non-debugging */
84 FT_UNUSED( glyphOffset_p ); /* case */
85
86
87 markFirst = (FT_UShort)( ( flags >> 15 ) & 1 );
88 dontAdvance = (FT_UShort)( ( flags >> 14 ) & 1 );
89 markLast = (FT_UShort)( ( flags >> 13 ) & 1 );
90
91 reserved = (FT_UShort)( flags & 0x1FF0 );
92 verb = (FT_UShort)( flags & 0x000F );
93
94 GXV_TRACE(( " IndicScript MorphRule for glyphOffset 0x%04x",
95 glyphOffset_p->u ));
96 GXV_TRACE(( " markFirst=%01d", markFirst ));
97 GXV_TRACE(( " dontAdvance=%01d", dontAdvance ));
98 GXV_TRACE(( " markLast=%01d", markLast ));
99 GXV_TRACE(( " %02d", verb ));
100 GXV_TRACE(( " %s\n", GXV_Mort_IndicScript_Msg[verb] ));
101
102 if ( markFirst > 0 && markLast > 0 )
103 {
104 GXV_TRACE(( " [odd] a glyph is marked as the first and last"
105 " in Indic rearrangement\n" ));
107 }
108
109 if ( markFirst > 0 && dontAdvance > 0 )
110 {
111 GXV_TRACE(( " [odd] the first glyph is marked as dontAdvance"
112 " in Indic rearrangement\n" ));
114 }
115
116 if ( 0 < reserved )
117 {
118 GXV_TRACE(( " non-zero bits found in reserved range\n" ));
120 }
121 else
122 GXV_TRACE(( "\n" ));
123 }
124
125
126 FT_LOCAL_DEF( void )
129 GXV_Validator gxvalid )
130 {
131 FT_Bytes p = table;
132
133
135 "mort chain subtable type0 (Indic-Script Rearrangement)" );
136
138
139 gxvalid->statetable.optdata = NULL;
140 gxvalid->statetable.optdata_load_func = NULL;
141 gxvalid->statetable.subtable_setup_func = NULL;
142 gxvalid->statetable.entry_glyphoffset_fmt = GXV_GLYPHOFFSET_NONE;
143 gxvalid->statetable.entry_validate_func =
145
146 gxv_StateTable_validate( p, limit, gxvalid );
147
148 GXV_EXIT;
149 }
150
151
152/* END */
static int state
Definition: maze.c:121
#define NULL
Definition: types.h:112
r reserved
Definition: btrfs.c:3006
#define FT_LOCAL_DEF(x)
Definition: ftconfig.h:388
#define FT_UNUSED(arg)
Definition: ftconfig.h:101
unsigned char FT_Byte
Definition: fttypes.h:154
unsigned short FT_UShort
Definition: fttypes.h:209
const FT_Byte * FT_Bytes
Definition: fttypes.h:165
#define FT_INVALID_DATA
Definition: ftvalid.h:150
GLint limit
Definition: glext.h:10326
GLbitfield flags
Definition: glext.h:7161
GLfloat GLfloat p
Definition: glext.h:8902
gxv_StateTable_validate(FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
Definition: gxvcommn.c:1208
#define GXV_NAME_ENTER(name)
Definition: gxvcommn.h:301
#define GXV_SET_ERR_IF_PARANOID(err)
Definition: gxvcommn.h:66
#define GXV_TRACE(s)
Definition: gxvcommn.h:304
@ GXV_GLYPHOFFSET_NONE
Definition: gxvcommn.h:122
#define GXV_STATETABLE_HEADER_SIZE
Definition: gxvcommn.h:520
#define GXV_EXIT
Definition: gxvcommn.h:302
#define GXV_LIMIT_CHECK(_count)
Definition: gxvcommn.h:272
gxv_mort_subtable_type0_validate(FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
Definition: gxvmort0.c:127
static const char * GXV_Mort_IndicScript_Msg[]
Definition: gxvmort0.c:42
static void gxv_mort_subtable_type0_entry_validate(FT_Byte state, FT_UShort flags, GXV_StateTable_GlyphOffsetCPtr glyphOffset_p, FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
Definition: gxvmort0.c:65