--- a/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-open-file-private.hh Wed Feb 27 18:46:55 2019 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,570 +0,0 @@
-/*
- * Copyright © 2007,2008,2009 Red Hat, Inc.
- * Copyright © 2012 Google, Inc.
- *
- * This is part of HarfBuzz, a text shaping library.
- *
- * Permission is hereby granted, without written agreement and without
- * license or royalty fees, to use, copy, modify, and distribute this
- * software and its documentation for any purpose, provided that the
- * above copyright notice and the following two paragraphs appear in
- * all copies of this software.
- *
- * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
- * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
- * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
- * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
- * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
- * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
- * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
- *
- * Red Hat Author(s): Behdad Esfahbod
- * Google Author(s): Behdad Esfahbod
- */
-
-#ifndef HB_OPEN_FILE_PRIVATE_HH
-#define HB_OPEN_FILE_PRIVATE_HH
-
-#include "hb-open-type-private.hh"
-#include "hb-ot-head-table.hh"
-
-
-namespace OT {
-
-
-/*
- *
- * The OpenType Font File
- *
- */
-
-
-/*
- * Organization of an OpenType Font
- */
-
-struct OpenTypeFontFile;
-struct OffsetTable;
-struct TTCHeader;
-
-
-typedef struct TableRecord
-{
- int cmp (Tag t) const
- { return -t.cmp (tag); }
-
- static int cmp (const void *pa, const void *pb)
- {
- const TableRecord *a = (const TableRecord *) pa;
- const TableRecord *b = (const TableRecord *) pb;
- return b->cmp (a->tag);
- }
-
- inline bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- return_trace (c->check_struct (this));
- }
-
- Tag tag; /* 4-byte identifier. */
- CheckSum checkSum; /* CheckSum for this table. */
- Offset32 offset; /* Offset from beginning of TrueType font
- * file. */
- HBUINT32 length; /* Length of this table. */
- public:
- DEFINE_SIZE_STATIC (16);
-} OpenTypeTable;
-
-typedef struct OffsetTable
-{
- friend struct OpenTypeFontFile;
-
- inline unsigned int get_table_count (void) const
- { return tables.len; }
- inline const TableRecord& get_table (unsigned int i) const
- {
- return tables[i];
- }
- inline unsigned int get_table_tags (unsigned int start_offset,
- unsigned int *table_count, /* IN/OUT */
- hb_tag_t *table_tags /* OUT */) const
- {
- if (table_count)
- {
- if (start_offset >= tables.len)
- *table_count = 0;
- else
- *table_count = MIN<unsigned int> (*table_count, tables.len - start_offset);
-
- const TableRecord *sub_tables = tables.arrayZ + start_offset;
- unsigned int count = *table_count;
- for (unsigned int i = 0; i < count; i++)
- table_tags[i] = sub_tables[i].tag;
- }
- return tables.len;
- }
- inline bool find_table_index (hb_tag_t tag, unsigned int *table_index) const
- {
- Tag t;
- t.set (tag);
- /* Linear-search for small tables to work around fonts with unsorted
- * table list. */
- int i = tables.len < 64 ? tables.lsearch (t) : tables.bsearch (t);
- if (table_index)
- *table_index = i == -1 ? Index::NOT_FOUND_INDEX : (unsigned int) i;
- return i != -1;
- }
- inline const TableRecord& get_table_by_tag (hb_tag_t tag) const
- {
- unsigned int table_index;
- find_table_index (tag, &table_index);
- return get_table (table_index);
- }
-
- public:
-
- inline bool serialize (hb_serialize_context_t *c,
- hb_tag_t sfnt_tag,
- Supplier<hb_tag_t> &tags,
- Supplier<hb_blob_t *> &blobs,
- unsigned int table_count)
- {
- TRACE_SERIALIZE (this);
- /* Alloc 12 for the OTHeader. */
- if (unlikely (!c->extend_min (*this))) return_trace (false);
- /* Write sfntVersion (bytes 0..3). */
- sfnt_version.set (sfnt_tag);
- /* Take space for numTables, searchRange, entrySelector, RangeShift
- * and the TableRecords themselves. */
- if (unlikely (!tables.serialize (c, table_count))) return_trace (false);
-
- const char *dir_end = (const char *) c->head;
- HBUINT32 *checksum_adjustment = nullptr;
-
- /* Write OffsetTables, alloc for and write actual table blobs. */
- for (unsigned int i = 0; i < table_count; i++)
- {
- TableRecord &rec = tables.arrayZ[i];
- hb_blob_t *blob = blobs[i];
- rec.tag.set (tags[i]);
- rec.length.set (hb_blob_get_length (blob));
- rec.offset.serialize (c, this);
-
- /* Allocate room for the table and copy it. */
- char *start = (char *) c->allocate_size<void> (rec.length);
- if (unlikely (!start)) {return false;}
-
- memcpy (start, hb_blob_get_data (blob, nullptr), rec.length);
-
- /* 4-byte allignment. */
- if (rec.length % 4)
- c->allocate_size<void> (4 - rec.length % 4);
- const char *end = (const char *) c->head;
-
- if (tags[i] == HB_OT_TAG_head && end - start >= head::static_size)
- {
- head *h = (head *) start;
- checksum_adjustment = &h->checkSumAdjustment;
- checksum_adjustment->set (0);
- }
-
- rec.checkSum.set_for_data (start, end - start);
- }
- tags += table_count;
- blobs += table_count;
-
- tables.qsort ();
-
- if (checksum_adjustment)
- {
- CheckSum checksum;
-
- /* The following line is a slower version of the following block. */
- //checksum.set_for_data (this, (const char *) c->head - (const char *) this);
- checksum.set_for_data (this, dir_end - (const char *) this);
- for (unsigned int i = 0; i < table_count; i++)
- {
- TableRecord &rec = tables.arrayZ[i];
- checksum.set (checksum + rec.checkSum);
- }
-
- checksum_adjustment->set (0xB1B0AFBAu - checksum);
- }
-
- return_trace (true);
- }
-
- inline bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- return_trace (c->check_struct (this) && tables.sanitize (c));
- }
-
- protected:
- Tag sfnt_version; /* '\0\001\0\00' if TrueType / 'OTTO' if CFF */
- BinSearchArrayOf<TableRecord>
- tables;
- public:
- DEFINE_SIZE_ARRAY (12, tables);
-} OpenTypeFontFace;
-
-
-/*
- * TrueType Collections
- */
-
-struct TTCHeaderVersion1
-{
- friend struct TTCHeader;
-
- inline unsigned int get_face_count (void) const { return table.len; }
- inline const OpenTypeFontFace& get_face (unsigned int i) const { return this+table[i]; }
-
- inline bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- return_trace (table.sanitize (c, this));
- }
-
- protected:
- Tag ttcTag; /* TrueType Collection ID string: 'ttcf' */
- FixedVersion<>version; /* Version of the TTC Header (1.0),
- * 0x00010000u */
- LArrayOf<LOffsetTo<OffsetTable> >
- table; /* Array of offsets to the OffsetTable for each font
- * from the beginning of the file */
- public:
- DEFINE_SIZE_ARRAY (12, table);
-};
-
-struct TTCHeader
-{
- friend struct OpenTypeFontFile;
-
- private:
-
- inline unsigned int get_face_count (void) const
- {
- switch (u.header.version.major) {
- case 2: /* version 2 is compatible with version 1 */
- case 1: return u.version1.get_face_count ();
- default:return 0;
- }
- }
- inline const OpenTypeFontFace& get_face (unsigned int i) const
- {
- switch (u.header.version.major) {
- case 2: /* version 2 is compatible with version 1 */
- case 1: return u.version1.get_face (i);
- default:return Null(OpenTypeFontFace);
- }
- }
-
- inline bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- if (unlikely (!u.header.version.sanitize (c))) return_trace (false);
- switch (u.header.version.major) {
- case 2: /* version 2 is compatible with version 1 */
- case 1: return_trace (u.version1.sanitize (c));
- default:return_trace (true);
- }
- }
-
- protected:
- union {
- struct {
- Tag ttcTag; /* TrueType Collection ID string: 'ttcf' */
- FixedVersion<>version; /* Version of the TTC Header (1.0 or 2.0),
- * 0x00010000u or 0x00020000u */
- } header;
- TTCHeaderVersion1 version1;
- } u;
-};
-
-/*
- * Mac Resource Fork
- */
-
-struct ResourceRefItem
-{
- inline bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- // actual data sanitization is done on ResourceForkHeader sanitizer
- return_trace (likely (c->check_struct (this)));
- }
-
- HBINT16 id; /* Resource ID, is really should be signed? */
- HBINT16 nameOffset; /* Offset from beginning of resource name list
- * to resource name, minus means there is no */
- HBUINT8 attr; /* Resource attributes */
- HBUINT24 dataOffset; /* Offset from beginning of resource data to
- * data for this resource */
- HBUINT32 reserved; /* Reserved for handle to resource */
- public:
- DEFINE_SIZE_STATIC (12);
-};
-
-struct ResourceTypeItem
-{
- inline bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- // RefList sanitization is done on ResourceMap sanitizer
- return_trace (likely (c->check_struct (this)));
- }
-
- inline unsigned int get_resource_count () const
- {
- return numRes + 1;
- }
-
- inline bool is_sfnt () const
- {
- return type == HB_TAG ('s','f','n','t');
- }
-
- inline const ResourceRefItem& get_ref_item (const void *base,
- unsigned int i) const
- {
- return (base+refList)[i];
- }
-
- protected:
- Tag type; /* Resource type */
- HBUINT16 numRes; /* Number of resource this type in map minus 1 */
- OffsetTo<UnsizedArrayOf<ResourceRefItem> >
- refList; /* Offset from beginning of resource type list
- * to reference list for this type */
- public:
- DEFINE_SIZE_STATIC (8);
-};
-
-struct ResourceMap
-{
- inline bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- if (unlikely (!c->check_struct (this)))
- return_trace (false);
- for (unsigned int i = 0; i < get_types_count (); ++i)
- {
- const ResourceTypeItem& type = get_type (i);
- if (unlikely (!type.sanitize (c)))
- return_trace (false);
- for (unsigned int j = 0; j < type.get_resource_count (); ++j)
- if (unlikely (!get_ref_item (type, j).sanitize (c)))
- return_trace (false);
- }
- return_trace (true);
- }
-
- inline const ResourceTypeItem& get_type (unsigned int i) const
- {
- // Why offset from the second byte of the object? I'm not sure
- return ((&reserved[2])+typeList)[i];
- }
-
- inline unsigned int get_types_count () const
- {
- return nTypes + 1;
- }
-
- inline const ResourceRefItem &get_ref_item (const ResourceTypeItem &type,
- unsigned int i) const
- {
- return type.get_ref_item (&(this+typeList), i);
- }
-
- inline const PString& get_name (const ResourceRefItem &item,
- unsigned int i) const
- {
- if (item.nameOffset == -1)
- return Null (PString);
-
- return StructAtOffset<PString> (this, nameList + item.nameOffset);
- }
-
- protected:
- HBUINT8 reserved[16]; /* Reserved for copy of resource header */
- LOffsetTo<ResourceMap>
- reserved1; /* Reserved for handle to next resource map */
- HBUINT16 reserved2; /* Reserved for file reference number */
- HBUINT16 attr; /* Resource fork attribute */
- OffsetTo<UnsizedArrayOf<ResourceTypeItem> >
- typeList; /* Offset from beginning of map to
- * resource type list */
- HBUINT16 nameList; /* Offset from beginning of map to
- * resource name list */
- HBUINT16 nTypes; /* Number of types in the map minus 1 */
- public:
- DEFINE_SIZE_STATIC (30);
-};
-
-struct ResourceForkHeader
-{
- inline unsigned int get_face_count () const
- {
- const ResourceMap &resource_map = this+map;
- for (unsigned int i = 0; i < resource_map.get_types_count (); ++i)
- {
- const ResourceTypeItem& type = resource_map.get_type (i);
- if (type.is_sfnt ())
- return type.get_resource_count ();
- }
- return 0;
- }
-
- inline const LArrayOf<HBUINT8>& get_data (const ResourceTypeItem& type,
- unsigned int idx) const
- {
- const ResourceMap &resource_map = this+map;
- unsigned int offset = dataOffset;
- offset += resource_map.get_ref_item (type, idx).dataOffset;
- return StructAtOffset<LArrayOf<HBUINT8> > (this, offset);
- }
-
- inline const OpenTypeFontFace& get_face (unsigned int idx) const
- {
- const ResourceMap &resource_map = this+map;
- for (unsigned int i = 0; i < resource_map.get_types_count (); ++i)
- {
- const ResourceTypeItem& type = resource_map.get_type (i);
- if (type.is_sfnt () && idx < type.get_resource_count ())
- return (OpenTypeFontFace&) get_data (type, idx).arrayZ;
- }
- return Null (OpenTypeFontFace);
- }
-
- inline bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- if (unlikely (!c->check_struct (this)))
- return_trace (false);
-
- const ResourceMap &resource_map = this+map;
- if (unlikely (!resource_map.sanitize (c)))
- return_trace (false);
-
- for (unsigned int i = 0; i < resource_map.get_types_count (); ++i)
- {
- const ResourceTypeItem& type = resource_map.get_type (i);
- for (unsigned int j = 0; j < type.get_resource_count (); ++j)
- {
- const LArrayOf<HBUINT8>& data = get_data (type, j);
- if (unlikely (!(data.sanitize (c) &&
- ((OpenTypeFontFace&) data.arrayZ).sanitize (c))))
- return_trace (false);
- }
- }
-
- return_trace (true);
- }
-
- protected:
- HBUINT32 dataOffset; /* Offset from beginning of resource fork
- * to resource data */
- LOffsetTo<ResourceMap>
- map; /* Offset from beginning of resource fork
- * to resource map */
- HBUINT32 dataLen; /* Length of resource data */
- HBUINT32 mapLen; /* Length of resource map */
- public:
- DEFINE_SIZE_STATIC (16);
-};
-
-/*
- * OpenType Font File
- */
-
-struct OpenTypeFontFile
-{
- static const hb_tag_t tableTag = HB_TAG ('_','_','_','_'); /* Sanitizer needs this. */
-
- enum {
- CFFTag = HB_TAG ('O','T','T','O'), /* OpenType with Postscript outlines */
- TrueTypeTag = HB_TAG ( 0 , 1 , 0 , 0 ), /* OpenType with TrueType outlines */
- TTCTag = HB_TAG ('t','t','c','f'), /* TrueType Collection */
- DFontTag = HB_TAG ( 0 , 0 , 1 , 0 ), /* DFont Mac Resource Fork */
- TrueTag = HB_TAG ('t','r','u','e'), /* Obsolete Apple TrueType */
- Typ1Tag = HB_TAG ('t','y','p','1') /* Obsolete Apple Type1 font in SFNT container */
- };
-
- inline hb_tag_t get_tag (void) const { return u.tag; }
-
- inline unsigned int get_face_count (void) const
- {
- switch (u.tag) {
- case CFFTag: /* All the non-collection tags */
- case TrueTag:
- case Typ1Tag:
- case TrueTypeTag: return 1;
- case TTCTag: return u.ttcHeader.get_face_count ();
-// case DFontTag: return u.rfHeader.get_face_count ();
- default: return 0;
- }
- }
- inline const OpenTypeFontFace& get_face (unsigned int i) const
- {
- switch (u.tag) {
- /* Note: for non-collection SFNT data we ignore index. This is because
- * Apple dfont container is a container of SFNT's. So each SFNT is a
- * non-TTC, but the index is more than zero. */
- case CFFTag: /* All the non-collection tags */
- case TrueTag:
- case Typ1Tag:
- case TrueTypeTag: return u.fontFace;
- case TTCTag: return u.ttcHeader.get_face (i);
-// case DFontTag: return u.rfHeader.get_face (i);
- default: return Null(OpenTypeFontFace);
- }
- }
-
- inline bool serialize_single (hb_serialize_context_t *c,
- hb_tag_t sfnt_tag,
- Supplier<hb_tag_t> &tags,
- Supplier<hb_blob_t *> &blobs,
- unsigned int table_count)
- {
- TRACE_SERIALIZE (this);
- assert (sfnt_tag != TTCTag);
- if (unlikely (!c->extend_min (*this))) return_trace (false);
- return_trace (u.fontFace.serialize (c, sfnt_tag, tags, blobs, table_count));
- }
-
- inline bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- if (unlikely (!u.tag.sanitize (c))) return_trace (false);
- switch (u.tag) {
- case CFFTag: /* All the non-collection tags */
- case TrueTag:
- case Typ1Tag:
- case TrueTypeTag: return_trace (u.fontFace.sanitize (c));
- case TTCTag: return_trace (u.ttcHeader.sanitize (c));
-// case DFontTag: return_trace (u.rfHeader.sanitize (c));
- default: return_trace (true);
- }
- }
-
- protected:
- union {
- Tag tag; /* 4-byte identifier. */
- OpenTypeFontFace fontFace;
- TTCHeader ttcHeader;
- ResourceForkHeader rfHeader;
- } u;
- public:
- DEFINE_SIZE_UNION (4, tag);
-};
-
-
-} /* namespace OT */
-
-
-#endif /* HB_OPEN_FILE_PRIVATE_HH */