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-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-cff-common.hh182
1 files changed, 63 insertions, 119 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-cff-common.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-cff-common.hh
index c102c151733..ae3b83a2563 100644
--- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-cff-common.hh
+++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-cff-common.hh
@@ -46,49 +46,21 @@ template<typename Type>
static inline const Type& StructAtOffsetOrNull (const void *P, unsigned int offset)
{ return offset ? StructAtOffset<Type> (P, offset) : Null (Type); }
-inline unsigned int calcOffSize (unsigned int dataSize)
-{
- unsigned int size = 1;
- unsigned int offset = dataSize + 1;
- while (offset & ~0xFF)
- {
- size++;
- offset >>= 8;
- }
- /* format does not support size > 4; caller should handle it as an error */
- return size;
-}
-
struct code_pair_t
{
hb_codepoint_t code;
hb_codepoint_t glyph;
};
-typedef hb_vector_t<unsigned char> str_buff_t;
-struct str_buff_vec_t : hb_vector_t<str_buff_t>
-{
- unsigned int total_size () const
- {
- unsigned int size = 0;
- for (unsigned int i = 0; i < length; i++)
- size += (*this)[i].length;
- return size;
- }
-
- private:
- typedef hb_vector_t<str_buff_t> SUPER;
-};
+using str_buff_t = hb_vector_t<unsigned char>;
+using str_buff_vec_t = hb_vector_t<str_buff_t>;
/* CFF INDEX */
template <typename COUNT>
struct CFFIndex
{
- static unsigned int calculate_offset_array_size (unsigned int offSize, unsigned int count)
- { return offSize * (count + 1); }
-
unsigned int offset_array_size () const
- { return calculate_offset_array_size (offSize, count); }
+ { return offSize * (count + 1); }
CFFIndex *copy (hb_serialize_context_t *c) const
{
@@ -100,55 +72,46 @@ struct CFFIndex
return_trace (out);
}
- bool serialize (hb_serialize_context_t *c, const CFFIndex &src)
- {
- TRACE_SERIALIZE (this);
- unsigned int size = src.get_size ();
- CFFIndex *dest = c->allocate_size<CFFIndex> (size);
- if (unlikely (!dest)) return_trace (false);
- memcpy (dest, &src, size);
- return_trace (true);
- }
-
bool serialize (hb_serialize_context_t *c,
unsigned int offSize_,
const byte_str_array_t &byteArray)
{
TRACE_SERIALIZE (this);
+
if (byteArray.length == 0)
{
COUNT *dest = c->allocate_min<COUNT> ();
if (unlikely (!dest)) return_trace (false);
*dest = 0;
+ return_trace (true);
}
- else
- {
- /* serialize CFFIndex header */
- if (unlikely (!c->extend_min (this))) return_trace (false);
- this->count = byteArray.length;
- this->offSize = offSize_;
- if (unlikely (!c->allocate_size<HBUINT8> (offSize_ * (byteArray.length + 1))))
- return_trace (false);
- /* serialize indices */
- unsigned int offset = 1;
- unsigned int i = 0;
- for (; i < byteArray.length; i++)
- {
- set_offset_at (i, offset);
- offset += byteArray[i].get_size ();
- }
+ /* serialize CFFIndex header */
+ if (unlikely (!c->extend_min (this))) return_trace (false);
+ this->count = byteArray.length;
+ this->offSize = offSize_;
+ if (unlikely (!c->allocate_size<HBUINT8> (offSize_ * (byteArray.length + 1))))
+ return_trace (false);
+
+ /* serialize indices */
+ unsigned int offset = 1;
+ unsigned int i = 0;
+ for (; i < byteArray.length; i++)
+ {
set_offset_at (i, offset);
+ offset += byteArray[i].get_size ();
+ }
+ set_offset_at (i, offset);
- /* serialize data */
- for (unsigned int i = 0; i < byteArray.length; i++)
- {
- const byte_str_t &bs = byteArray[i];
- unsigned char *dest = c->allocate_size<unsigned char> (bs.length);
- if (unlikely (!dest)) return_trace (false);
- memcpy (dest, &bs[0], bs.length);
- }
+ /* serialize data */
+ for (unsigned int i = 0; i < byteArray.length; i++)
+ {
+ const hb_ubytes_t &bs = byteArray[i];
+ unsigned char *dest = c->allocate_size<unsigned char> (bs.length);
+ if (unlikely (!dest)) return_trace (false);
+ memcpy (dest, &bs[0], bs.length);
}
+
return_trace (true);
}
@@ -160,7 +123,7 @@ struct CFFIndex
byteArray.init ();
byteArray.resize (buffArray.length);
for (unsigned int i = 0; i < byteArray.length; i++)
- byteArray[i] = byte_str_t (buffArray[i].arrayZ, buffArray[i].length);
+ byteArray[i] = hb_ubytes_t (buffArray[i].arrayZ, buffArray[i].length);
bool result = this->serialize (c, offSize_, byteArray);
byteArray.fini ();
return result;
@@ -172,18 +135,9 @@ struct CFFIndex
Iterator it)
{
TRACE_SERIALIZE (this);
- if (it.len () == 0)
- {
- COUNT *dest = c->allocate_min<COUNT> ();
- if (unlikely (!dest)) return_trace (false);
- *dest = 0;
- }
- else
- {
- serialize_header(c, + it | hb_map ([] (const byte_str_t &_) { return _.length; }));
- for (const auto &_ : +it)
- _.copy (c);
- }
+ serialize_header(c, + it | hb_map ([] (const hb_ubytes_t &_) { return _.length; }));
+ for (const auto &_ : +it)
+ _.copy (c);
return_trace (true);
}
@@ -196,7 +150,7 @@ struct CFFIndex
{
auto it =
+ hb_iter (buffArray)
- | hb_map ([] (const str_buff_t &_) { return byte_str_t (_.arrayZ, _.length); })
+ | hb_map ([] (const str_buff_t &_) { return hb_ubytes_t (_.arrayZ, _.length); })
;
return serialize (c, it);
}
@@ -209,13 +163,15 @@ struct CFFIndex
TRACE_SERIALIZE (this);
unsigned total = + it | hb_reduce (hb_add, 0);
- unsigned off_size = calcOffSize (total);
+ unsigned off_size = (hb_bit_storage (total + 1) + 7) / 8;
/* serialize CFFIndex header */
if (unlikely (!c->extend_min (this))) return_trace (false);
this->count = it.len ();
+ if (!this->count) return_trace (true);
+ if (unlikely (!c->extend (this->offSize))) return_trace (false);
this->offSize = off_size;
- if (unlikely (!c->allocate_size<HBUINT8> (off_size * (it.len () + 1))))
+ if (unlikely (!c->allocate_size<HBUINT8> (off_size * (this->count + 1))))
return_trace (false);
/* serialize indices */
@@ -233,6 +189,7 @@ struct CFFIndex
void set_offset_at (unsigned int index, unsigned int offset)
{
+ assert (index <= count);
HBUINT8 *p = offsets + offSize * index + offSize;
unsigned int size = offSize;
for (; size; size--)
@@ -243,11 +200,13 @@ struct CFFIndex
}
}
+ private:
unsigned int offset_at (unsigned int index) const
{
assert (index <= count);
- const HBUINT8 *p = offsets + offSize * index;
+
unsigned int size = offSize;
+ const HBUINT8 *p = offsets + size * index;
unsigned int offset = 0;
for (; size; size--)
offset = (offset << 8) + *p++;
@@ -256,72 +215,57 @@ struct CFFIndex
unsigned int length_at (unsigned int index) const
{
- if (unlikely ((offset_at (index + 1) < offset_at (index)) ||
- (offset_at (index + 1) > offset_at (count))))
+ unsigned offset0 = offset_at (index);
+ unsigned offset1 = offset_at (index + 1);
+ if (unlikely (offset1 < offset0 || offset1 > offset_at (count)))
return 0;
- return offset_at (index + 1) - offset_at (index);
+ return offset1 - offset0;
}
const unsigned char *data_base () const
- { return (const unsigned char *) this + min_size + offset_array_size (); }
-
- unsigned int data_size () const { return HBINT8::static_size; }
+ { return (const unsigned char *) this + min_size + offSize.static_size + offset_array_size (); }
+ public:
- byte_str_t operator [] (unsigned int index) const
+ hb_ubytes_t operator [] (unsigned int index) const
{
- if (unlikely (index >= count)) return Null (byte_str_t);
- return byte_str_t (data_base () + offset_at (index) - 1, length_at (index));
+ if (unlikely (index >= count)) return hb_ubytes_t ();
+ unsigned length = length_at (index);
+ if (unlikely (!length)) return hb_ubytes_t ();
+ return hb_ubytes_t (data_base () + offset_at (index) - 1, length);
}
unsigned int get_size () const
{
- if (this == &Null (CFFIndex)) return 0;
- if (count > 0)
- return min_size + offset_array_size () + (offset_at (count) - 1);
- return count.static_size; /* empty CFFIndex contains count only */
+ if (count)
+ return min_size + offSize.static_size + offset_array_size () + (offset_at (count) - 1);
+ return min_size; /* empty CFFIndex contains count only */
}
bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
- return_trace (likely ((c->check_struct (this) && count == 0) || /* empty INDEX */
- (c->check_struct (this) && offSize >= 1 && offSize <= 4 &&
- c->check_array (offsets, offSize, count + 1) &&
- c->check_array ((const HBUINT8*) data_base (), 1, max_offset () - 1))));
- }
-
- protected:
- unsigned int max_offset () const
- {
- unsigned int max = 0;
- for (unsigned int i = 0; i < count + 1u; i++)
- {
- unsigned int off = offset_at (i);
- if (off > max) max = off;
- }
- return max;
+ return_trace (likely (c->check_struct (this) &&
+ (count == 0 || /* empty INDEX */
+ (count < count + 1u &&
+ c->check_struct (&offSize) && offSize >= 1 && offSize <= 4 &&
+ c->check_array (offsets, offSize, count + 1u) &&
+ c->check_array ((const HBUINT8*) data_base (), 1, offset_at (count) - 1)))));
}
public:
COUNT count; /* Number of object data. Note there are (count+1) offsets */
+ private:
HBUINT8 offSize; /* The byte size of each offset in the offsets array. */
HBUINT8 offsets[HB_VAR_ARRAY];
/* The array of (count + 1) offsets into objects array (1-base). */
/* HBUINT8 data[HB_VAR_ARRAY]; Object data */
public:
- DEFINE_SIZE_ARRAY (COUNT::static_size + HBUINT8::static_size, offsets);
+ DEFINE_SIZE_MIN (COUNT::static_size);
};
template <typename COUNT, typename TYPE>
struct CFFIndexOf : CFFIndex<COUNT>
{
- const byte_str_t operator [] (unsigned int index) const
- {
- if (likely (index < CFFIndex<COUNT>::count))
- return byte_str_t (CFFIndex<COUNT>::data_base () + CFFIndex<COUNT>::offset_at (index) - 1, CFFIndex<COUNT>::length_at (index));
- return Null (byte_str_t);
- }
-
template <typename DATA, typename PARAM1, typename PARAM2>
bool serialize (hb_serialize_context_t *c,
unsigned int offSize_,