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[serialize] Add copy_bytes() and copy_blob()

This commit is contained in:
Behdad Esfahbod 2018-08-24 10:07:49 -07:00
parent 1c6b369324
commit 142ac5a6be
2 changed files with 23 additions and 1 deletions
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3
src/hb-dsalgs.hh
View File

@ -502,6 +502,9 @@ struct hb_bytes_t
{ {
inline hb_bytes_t (void) : bytes (nullptr), len (0) {} inline hb_bytes_t (void) : bytes (nullptr), len (0) {}
inline hb_bytes_t (const char *bytes_, unsigned int len_) : bytes (bytes_), len (len_) {} inline hb_bytes_t (const char *bytes_, unsigned int len_) : bytes (bytes_), len (len_) {}
inline hb_bytes_t (const void *bytes_, unsigned int len_) : bytes ((const char *) bytes_), len (len_) {}
inline void free (void) { ::free ((void *) bytes); bytes = nullptr; len = 0; }
inline int cmp (const hb_bytes_t &a) const inline int cmp (const hb_bytes_t &a) const
{ {

21
src/hb-machinery-private.hh
View File

@ -402,7 +402,7 @@ struct hb_serialize_context_t
} }
template <typename Type> template <typename Type>
inline Type *copy (void) inline Type *copy (void) const
{ {
assert (!this->ran_out_of_room); assert (!this->ran_out_of_room);
unsigned int len = this->head - this->start; unsigned int len = this->head - this->start;
@ -411,6 +411,25 @@ struct hb_serialize_context_t
memcpy (p, this->start, len); memcpy (p, this->start, len);
return reinterpret_cast<Type *> (p); return reinterpret_cast<Type *> (p);
} }
inline hb_bytes_t copy_bytes (void) const
{
assert (!this->ran_out_of_room);
unsigned int len = this->head - this->start;
void *p = malloc (len);
if (p)
memcpy (p, this->start, len);
else
return hb_bytes_t ();
return hb_bytes_t (p, len);
}
inline hb_blob_t *copy_blob (void) const
{
assert (!this->ran_out_of_room);
return hb_blob_create (this->start,
this->head - this->start,
HB_MEMORY_MODE_DUPLICATE,
nullptr, nullptr);
}
template <typename Type> template <typename Type>
inline Type *allocate_size (unsigned int size) inline Type *allocate_size (unsigned int size)