#define HB_OT_CMAP_TABLE_HH
#include "hb-open-type-private.hh"
-
+#include "hb-subset-plan.hh"
namespace OT {
}
protected:
- USHORT format; /* Format number is set to 0. */
- USHORT lengthZ; /* Byte length of this subtable. */
- USHORT languageZ; /* Ignore. */
- BYTE glyphIdArray[256];/* An array that maps character
+ HBUINT16 format; /* Format number is set to 0. */
+ HBUINT16 lengthZ; /* Byte length of this subtable. */
+ HBUINT16 languageZ; /* Ignore. */
+ HBUINT8 glyphIdArray[256];/* An array that maps character
* code to glyph index values. */
public:
DEFINE_SIZE_STATIC (6 + 256);
/* Custom two-array bsearch. */
int min = 0, max = (int) thiz->segCount - 1;
- const USHORT *startCount = thiz->startCount;
- const USHORT *endCount = thiz->endCount;
+ const HBUINT16 *startCount = thiz->startCount;
+ const HBUINT16 *endCount = thiz->endCount;
unsigned int i;
while (min <= max)
{
return true;
}
- const USHORT *endCount;
- const USHORT *startCount;
- const USHORT *idDelta;
- const USHORT *idRangeOffset;
- const USHORT *glyphIdArray;
+ const HBUINT16 *endCount;
+ const HBUINT16 *startCount;
+ const HBUINT16 *idDelta;
+ const HBUINT16 *idRangeOffset;
+ const HBUINT16 *glyphIdArray;
unsigned int segCount;
unsigned int glyphIdArrayLength;
};
}
protected:
- USHORT format; /* Format number is set to 4. */
- USHORT length; /* This is the length in bytes of the
+ HBUINT16 format; /* Format number is set to 4. */
+ HBUINT16 length; /* This is the length in bytes of the
* subtable. */
- USHORT languageZ; /* Ignore. */
- USHORT segCountX2; /* 2 x segCount. */
- USHORT searchRangeZ; /* 2 * (2**floor(log2(segCount))) */
- USHORT entrySelectorZ; /* log2(searchRange/2) */
- USHORT rangeShiftZ; /* 2 x segCount - searchRange */
+ HBUINT16 languageZ; /* Ignore. */
+ HBUINT16 segCountX2; /* 2 x segCount. */
+ HBUINT16 searchRangeZ; /* 2 * (2**floor(log2(segCount))) */
+ HBUINT16 entrySelectorZ; /* log2(searchRange/2) */
+ HBUINT16 rangeShiftZ; /* 2 x segCount - searchRange */
- USHORT values[VAR];
+ HBUINT16 values[VAR];
#if 0
- USHORT endCount[segCount]; /* End characterCode for each segment,
+ HBUINT16 endCount[segCount]; /* End characterCode for each segment,
* last=0xFFFFu. */
- USHORT reservedPad; /* Set to 0. */
- USHORT startCount[segCount]; /* Start character code for each segment. */
- SHORT idDelta[segCount]; /* Delta for all character codes in segment. */
- USHORT idRangeOffset[segCount];/* Offsets into glyphIdArray or 0 */
- USHORT glyphIdArray[VAR]; /* Glyph index array (arbitrary length) */
+ HBUINT16 reservedPad; /* Set to 0. */
+ HBUINT16 startCount[segCount]; /* Start character code for each segment. */
+ HBINT16 idDelta[segCount]; /* Delta for all character codes in segment. */
+ HBUINT16 idRangeOffset[segCount];/* Offsets into glyphIdArray or 0 */
+ HBUINT16 glyphIdArray[VAR]; /* Glyph index array (arbitrary length) */
#endif
public:
{
friend struct CmapSubtableFormat12;
friend struct CmapSubtableFormat13;
+ friend struct cmap;
int cmp (hb_codepoint_t codepoint) const
{
}
private:
- ULONG startCharCode; /* First character code in this group. */
- ULONG endCharCode; /* Last character code in this group. */
- ULONG glyphID; /* Glyph index; interpretation depends on
+ HBUINT32 startCharCode; /* First character code in this group. */
+ HBUINT32 endCharCode; /* Last character code in this group. */
+ HBUINT32 glyphID; /* Glyph index; interpretation depends on
* subtable format. */
public:
DEFINE_SIZE_STATIC (12);
DEFINE_SIZE_ARRAY (5 * sizeof (UINT), glyphIdArray);
};
-struct CmapSubtableFormat6 : CmapSubtableTrimmed<USHORT> {};
-struct CmapSubtableFormat10 : CmapSubtableTrimmed<ULONG > {};
+struct CmapSubtableFormat6 : CmapSubtableTrimmed<HBUINT16> {};
+struct CmapSubtableFormat10 : CmapSubtableTrimmed<HBUINT32 > {};
template <typename T>
struct CmapSubtableLongSegmented
{
+ friend struct cmap;
+
inline bool get_glyph (hb_codepoint_t codepoint, hb_codepoint_t *glyph) const
{
int i = groups.bsearch (codepoint);
return_trace (c->check_struct (this) && groups.sanitize (c));
}
+ inline bool serialize (hb_serialize_context_t *c,
+ hb_prealloced_array_t<CmapSubtableLongGroup> &group_data)
+ {
+ TRACE_SERIALIZE (this);
+ if (unlikely (!c->extend_min (*this))) return_trace (false);
+ Supplier<CmapSubtableLongGroup> supplier (group_data.array, group_data.len);
+ if (unlikely (!groups.serialize (c, supplier, group_data.len))) return_trace (false);
+ return true;
+ }
+
protected:
- USHORT format; /* Subtable format; set to 12. */
- USHORT reservedZ; /* Reserved; set to 0. */
- ULONG lengthZ; /* Byte length of this subtable. */
- ULONG languageZ; /* Ignore. */
- SortedArrayOf<CmapSubtableLongGroup, ULONG>
+ HBUINT16 format; /* Subtable format; set to 12. */
+ HBUINT16 reservedZ; /* Reserved; set to 0. */
+ HBUINT32 lengthZ; /* Byte length of this subtable. */
+ HBUINT32 languageZ; /* Ignore. */
+ SortedArrayOf<CmapSubtableLongGroup, HBUINT32>
groups; /* Groupings. */
public:
DEFINE_SIZE_ARRAY (16, groups);
}
UINT24 startUnicodeValue; /* First value in this range. */
- BYTE additionalCount; /* Number of additional values in this
+ HBUINT8 additionalCount; /* Number of additional values in this
* range. */
public:
DEFINE_SIZE_STATIC (4);
};
-typedef SortedArrayOf<UnicodeValueRange, ULONG> DefaultUVS;
+typedef SortedArrayOf<UnicodeValueRange, HBUINT32> DefaultUVS;
struct UVSMapping
{
DEFINE_SIZE_STATIC (5);
};
-typedef SortedArrayOf<UVSMapping, ULONG> NonDefaultUVS;
+typedef SortedArrayOf<UVSMapping, HBUINT32> NonDefaultUVS;
struct VariationSelectorRecord
{
}
protected:
- USHORT format; /* Format number is set to 14. */
- ULONG lengthZ; /* Byte length of this subtable. */
- SortedArrayOf<VariationSelectorRecord, ULONG>
+ HBUINT16 format; /* Format number is set to 14. */
+ HBUINT32 lengthZ; /* Byte length of this subtable. */
+ SortedArrayOf<VariationSelectorRecord, HBUINT32>
record; /* Variation selector records; sorted
* in increasing order of `varSelector'. */
public:
hb_codepoint_t *glyph) const
{
switch (u.format) {
- case 0: return u.format0 .get_glyph(codepoint, glyph);
- case 4: return u.format4 .get_glyph(codepoint, glyph);
- case 6: return u.format6 .get_glyph(codepoint, glyph);
- case 10: return u.format10.get_glyph(codepoint, glyph);
- case 12: return u.format12.get_glyph(codepoint, glyph);
- case 13: return u.format13.get_glyph(codepoint, glyph);
+ case 0: return u.format0 .get_glyph (codepoint, glyph);
+ case 4: return u.format4 .get_glyph (codepoint, glyph);
+ case 6: return u.format6 .get_glyph (codepoint, glyph);
+ case 10: return u.format10.get_glyph (codepoint, glyph);
+ case 12: return u.format12.get_glyph (codepoint, glyph);
+ case 13: return u.format13.get_glyph (codepoint, glyph);
case 14:
default: return false;
}
public:
union {
- USHORT format; /* Format identifier */
+ HBUINT16 format; /* Format identifier */
CmapSubtableFormat0 format0;
CmapSubtableFormat4 format4;
CmapSubtableFormat6 format6;
subtable.sanitize (c, base));
}
- USHORT platformID; /* Platform ID. */
- USHORT encodingID; /* Platform-specific encoding ID. */
+ HBUINT16 platformID; /* Platform ID. */
+ HBUINT16 encodingID; /* Platform-specific encoding ID. */
LOffsetTo<CmapSubtable>
subtable; /* Byte offset from beginning of table to the subtable for this encoding. */
public:
{
static const hb_tag_t tableTag = HB_OT_TAG_cmap;
+ inline bool sanitize (hb_sanitize_context_t *c) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (c->check_struct (this) &&
+ likely (version == 0) &&
+ encodingRecord.sanitize (c, this));
+ }
+
+ inline bool populate_groups (hb_subset_plan_t *plan,
+ hb_prealloced_array_t<CmapSubtableLongGroup> *groups) const
+ {
+ CmapSubtableLongGroup *group = nullptr;
+ for (unsigned int i = 0; i < plan->codepoints.len; i++) {
+
+ hb_codepoint_t cp = plan->codepoints[i];
+ if (!group || cp - 1 != group->endCharCode)
+ {
+ group = groups->push ();
+ group->startCharCode.set (cp);
+ group->endCharCode.set (cp);
+ hb_codepoint_t new_gid;
+ if (unlikely (!hb_subset_plan_new_gid_for_codepoint (plan, cp, &new_gid)))
+ {
+ DEBUG_MSG(SUBSET, nullptr, "Unable to find new gid for %04x", cp);
+ return false;
+ }
+ group->glyphID.set (new_gid);
+ } else
+ {
+ group->endCharCode.set (cp);
+ }
+ }
+
+ DEBUG_MSG(SUBSET, nullptr, "cmap");
+ for (unsigned int i = 0; i < groups->len; i++) {
+ CmapSubtableLongGroup& group = (*groups)[i];
+ DEBUG_MSG(SUBSET, nullptr, " %d: U+%04X-U+%04X, gid %d-%d", i, (uint32_t) group.startCharCode, (uint32_t) group.endCharCode, (uint32_t) group.glyphID, (uint32_t) group.glyphID + ((uint32_t) group.endCharCode - (uint32_t) group.startCharCode));
+ }
+
+ return true;
+ }
+
+ inline bool _subset (hb_prealloced_array_t<CmapSubtableLongGroup> &groups,
+ size_t dest_sz,
+ void *dest) const
+ {
+ hb_serialize_context_t c (dest, dest_sz);
+
+ OT::cmap *cmap = c.start_serialize<OT::cmap> ();
+ if (unlikely (!c.extend_min (*cmap)))
+ {
+ return false;
+ }
+
+ cmap->version.set (0);
+
+ if (unlikely (!cmap->encodingRecord.serialize (&c, /* numTables */ 1))) return false;
+
+ EncodingRecord &rec = cmap->encodingRecord[0];
+ rec.platformID.set (3); // Windows
+ rec.encodingID.set (10); // Unicode UCS-4
+
+ /* capture offset to subtable */
+ CmapSubtable &subtable = rec.subtable.serialize (&c, cmap);
+
+ subtable.u.format.set (12);
+
+ CmapSubtableFormat12 &format12 = subtable.u.format12;
+ if (unlikely (!c.extend_min (format12))) return false;
+
+ format12.format.set (12);
+ format12.reservedZ.set (0);
+ format12.lengthZ.set (16 + 12 * groups.len);
+
+ if (unlikely (!format12.serialize (&c, groups))) return false;
+
+ c.end_serialize ();
+
+ return true;
+ }
+
+ inline bool subset (hb_subset_plan_t *plan) const
+ {
+ hb_auto_array_t<CmapSubtableLongGroup> groups;
+
+ if (unlikely (!populate_groups (plan, &groups))) return false;
+
+ // We now know how big our blob needs to be
+ // TODO use APIs from the structs to get size?
+ size_t dest_sz = 4 // header
+ + 8 // 1 EncodingRecord
+ + 16 // Format 12 header
+ + 12 * groups.len; // SequentialMapGroup records
+ void *dest = malloc (dest_sz);
+ if (unlikely (!dest)) {
+ DEBUG_MSG(SUBSET, nullptr, "Unable to alloc %lu for cmap subset output", (unsigned long) dest_sz);
+ return false;
+ }
+
+ if (unlikely (!_subset (groups, dest_sz, dest)))
+ {
+ free (dest);
+ return false;
+ }
+
+ // all done, write the blob into dest
+ hb_blob_t *cmap_prime = hb_blob_create ((const char *)dest,
+ dest_sz,
+ HB_MEMORY_MODE_READONLY,
+ dest,
+ free);
+ bool result = hb_subset_plan_add_table (plan, HB_OT_TAG_cmap, cmap_prime);
+ hb_blob_destroy (cmap_prime);
+ return result;
+ }
+
+ struct accelerator_t
+ {
+ inline void init (hb_face_t *face)
+ {
+ this->blob = OT::Sanitizer<OT::cmap>().sanitize (face->reference_table (HB_OT_TAG_cmap));
+ const OT::cmap *cmap = OT::Sanitizer<OT::cmap>::lock_instance (this->blob);
+ const OT::CmapSubtable *subtable = nullptr;
+ const OT::CmapSubtableFormat14 *subtable_uvs = nullptr;
+
+ bool symbol = false;
+ /* 32-bit subtables. */
+ if (!subtable) subtable = cmap->find_subtable (3, 10);
+ if (!subtable) subtable = cmap->find_subtable (0, 6);
+ if (!subtable) subtable = cmap->find_subtable (0, 4);
+ /* 16-bit subtables. */
+ if (!subtable) subtable = cmap->find_subtable (3, 1);
+ if (!subtable) subtable = cmap->find_subtable (0, 3);
+ if (!subtable) subtable = cmap->find_subtable (0, 2);
+ if (!subtable) subtable = cmap->find_subtable (0, 1);
+ if (!subtable) subtable = cmap->find_subtable (0, 0);
+ if (!subtable)
+ {
+ subtable = cmap->find_subtable (3, 0);
+ if (subtable) symbol = true;
+ }
+ /* Meh. */
+ if (!subtable) subtable = &OT::Null(OT::CmapSubtable);
+
+ /* UVS subtable. */
+ if (!subtable_uvs)
+ {
+ const OT::CmapSubtable *st = cmap->find_subtable (0, 5);
+ if (st && st->u.format == 14)
+ subtable_uvs = &st->u.format14;
+ }
+ /* Meh. */
+ if (!subtable_uvs) subtable_uvs = &OT::Null(OT::CmapSubtableFormat14);
+
+ this->uvs_table = subtable_uvs;
+
+ this->get_glyph_data = subtable;
+ if (unlikely (symbol))
+ this->get_glyph_func = get_glyph_from_symbol<OT::CmapSubtable>;
+ else
+ switch (subtable->u.format) {
+ /* Accelerate format 4 and format 12. */
+ default: this->get_glyph_func = get_glyph_from<OT::CmapSubtable>; break;
+ case 12: this->get_glyph_func = get_glyph_from<OT::CmapSubtableFormat12>; break;
+ case 4:
+ {
+ this->format4_accel.init (&subtable->u.format4);
+ this->get_glyph_data = &this->format4_accel;
+ this->get_glyph_func = this->format4_accel.get_glyph_func;
+ }
+ break;
+ }
+ }
+
+ inline void fini (void)
+ {
+ hb_blob_destroy (this->blob);
+ }
+
+ inline bool get_nominal_glyph (hb_codepoint_t unicode,
+ hb_codepoint_t *glyph) const
+ {
+ return this->get_glyph_func (this->get_glyph_data, unicode, glyph);
+ }
+
+ inline bool get_variation_glyph (hb_codepoint_t unicode,
+ hb_codepoint_t variation_selector,
+ hb_codepoint_t *glyph) const
+ {
+ switch (this->uvs_table->get_glyph_variant (unicode,
+ variation_selector,
+ glyph))
+ {
+ case OT::GLYPH_VARIANT_NOT_FOUND: return false;
+ case OT::GLYPH_VARIANT_FOUND: return true;
+ case OT::GLYPH_VARIANT_USE_DEFAULT: break;
+ }
+
+ return get_nominal_glyph (unicode, glyph);
+ }
+
+ protected:
+ typedef bool (*hb_cmap_get_glyph_func_t) (const void *obj,
+ hb_codepoint_t codepoint,
+ hb_codepoint_t *glyph);
+
+ template <typename Type>
+ static inline bool get_glyph_from (const void *obj,
+ hb_codepoint_t codepoint,
+ hb_codepoint_t *glyph)
+ {
+ const Type *typed_obj = (const Type *) obj;
+ return typed_obj->get_glyph (codepoint, glyph);
+ }
+
+ template <typename Type>
+ static inline bool get_glyph_from_symbol (const void *obj,
+ hb_codepoint_t codepoint,
+ hb_codepoint_t *glyph)
+ {
+ const Type *typed_obj = (const Type *) obj;
+ if (likely (typed_obj->get_glyph (codepoint, glyph)))
+ return true;
+
+ if (codepoint <= 0x00FFu)
+ {
+ /* For symbol-encoded OpenType fonts, we duplicate the
+ * U+F000..F0FF range at U+0000..U+00FF. That's what
+ * Windows seems to do, and that's hinted about at:
+ * http://www.microsoft.com/typography/otspec/recom.htm
+ * under "Non-Standard (Symbol) Fonts". */
+ return typed_obj->get_glyph (0xF000u + codepoint, glyph);
+ }
+
+ return false;
+ }
+
+ private:
+ hb_cmap_get_glyph_func_t get_glyph_func;
+ const void *get_glyph_data;
+ OT::CmapSubtableFormat4::accelerator_t format4_accel;
+
+ const OT::CmapSubtableFormat14 *uvs_table;
+ hb_blob_t *blob;
+ };
+
+ protected:
+
inline const CmapSubtable *find_subtable (unsigned int platform_id,
unsigned int encoding_id) const
{
* unsorted subtable list. */
int result = encodingRecord./*bsearch*/lsearch (key);
if (result == -1 || !encodingRecord[result].subtable)
- return NULL;
+ return nullptr;
return &(this+encodingRecord[result].subtable);
}
- inline bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- return_trace (c->check_struct (this) &&
- likely (version == 0) &&
- encodingRecord.sanitize (c, this));
- }
-
- USHORT version; /* Table version number (0). */
+ protected:
+ HBUINT16 version; /* Table version number (0). */
SortedArrayOf<EncodingRecord>
encodingRecord; /* Encoding tables. */
public:
projects / platform / upstream / harfbuzz.git / blobdiff