/src/harfbuzz/src/hb-subset-table-cff.cc

Source
#include "hb-subset-table.hh"

#include "hb-ot-cff1-table.hh"
#include "hb-ot-cff2-table.hh"
#include "hb-ot-vorg-table.hh"


#ifndef HB_NO_SUBSET_CFF
template<>
struct hb_subset_plan_t::source_table_loader<const OT::cff1>
{
  auto operator () (hb_subset_plan_t *plan)
  HB_AUTO_RETURN (plan->accelerator ? plan->accelerator->cff1_accel :
      plan->inprogress_accelerator ? plan->inprogress_accelerator->cff1_accel :
      plan->cff1_accel)
};
template<>
struct hb_subset_plan_t::source_table_loader<const OT::cff2>
{
  auto operator () (hb_subset_plan_t *plan)
  HB_AUTO_RETURN (plan->accelerator ? plan->accelerator->cff2_accel :
      plan->inprogress_accelerator ? plan->inprogress_accelerator->cff2_accel :
      plan->cff2_accel)
};
#endif


bool _hb_subset_table_cff   (hb_subset_plan_t *plan, hb_vector_t<char> &buf, hb_tag_t tag, bool *success)
{
#ifndef HB_NO_SUBSET_CFF
  switch (tag)
  {
  case HB_TAG('C','F','F',' '): *success = _hb_subset_table<const OT::cff1> (plan, buf); return true;
  case HB_TAG('C','F','F','2'): *success = _hb_subset_table<const OT::cff2> (plan, buf); return true;
  case HB_TAG('V','O','R','G'): *success = _hb_subset_table<const OT::VORG> (plan, buf); return true;
  }
#endif
  return false;
}


#ifdef HB_EXPERIMENTAL_API
#ifndef HB_NO_CFF

template<typename accel_t>
static hb_blob_t* get_charstrings_data(accel_t& accel, hb_codepoint_t glyph_index) {
  if (!accel.is_valid()) {
    return hb_blob_get_empty ();
  }

  hb_ubytes_t bytes = (*accel.charStrings)[glyph_index];
  if (!bytes) {
    return hb_blob_get_empty ();
  }

  hb_blob_t* cff_blob = accel.get_blob();
  uint32_t length;
  const char* cff_data = hb_blob_get_data(cff_blob, &length) ;

  long int offset = (const char*) bytes.arrayZ - cff_data;
  if (offset < 0 || offset > INT32_MAX) {
    return hb_blob_get_empty ();
  }

  return hb_blob_create_sub_blob(cff_blob, (uint32_t) offset, bytes.length);
}

template<typename accel_t>
static hb_blob_t* get_charstrings_index(accel_t& accel) {
  if (!accel.is_valid()) {
    return hb_blob_get_empty ();
  }

  const char* charstrings_start = (const char*) accel.charStrings;
  unsigned charstrings_length = accel.charStrings->get_size();

  hb_blob_t* cff_blob = accel.get_blob();
  uint32_t length;
  const char* cff_data = hb_blob_get_data(cff_blob, &length) ;

  long int offset = charstrings_start - cff_data;
  if (offset < 0 || offset > INT32_MAX) {
    return hb_blob_get_empty ();
  }

  return hb_blob_create_sub_blob(cff_blob, (uint32_t) offset, charstrings_length);
}

/**
 * hb_subset_cff_get_charstring_data:
 * @face: A face object
 * @glyph_index: Glyph index to get data for.
 *
 * Returns the raw outline data from the CFF/CFF2 table associated with the given glyph index.
 *
 * XSince: EXPERIMENTAL
 **/
HB_EXTERN hb_blob_t*
hb_subset_cff_get_charstring_data(hb_face_t* face, hb_codepoint_t glyph_index) {
  return get_charstrings_data(*face->table.cff1, glyph_index);
}

/**
 * hb_subset_cff_get_charstrings_index:
 * @face: A face object
 *
 * Returns the raw CFF CharStrings INDEX from the CFF table.
 *
 * XSince: EXPERIMENTAL
 **/
HB_EXTERN hb_blob_t*
hb_subset_cff_get_charstrings_index (hb_face_t* face) {
  return get_charstrings_index (*face->table.cff1);
}

/**
 * hb_subset_cff2_get_charstring_data:
 * @face: A face object
 * @glyph_index: Glyph index to get data for.
 *
 * Returns the raw outline data from the CFF/CFF2 table associated with the given glyph index.
 *
 * XSince: EXPERIMENTAL
 **/
HB_EXTERN hb_blob_t*
hb_subset_cff2_get_charstring_data(hb_face_t* face, hb_codepoint_t glyph_index) {
  return get_charstrings_data(*face->table.cff2, glyph_index);
}

/**
 * hb_subset_cff2_get_charstrings_index:
 * @face: A face object
 *
 * Returns the raw CFF2 CharStrings INDEX from the CFF2 table.
 *
 * XSince: EXPERIMENTAL
 **/
HB_EXTERN hb_blob_t*
hb_subset_cff2_get_charstrings_index (hb_face_t* face) {
  return get_charstrings_index (*face->table.cff2);
}
#endif
#endif

Line	Count	Source
1		#include "hb-subset-table.hh"
2
3		#include "hb-ot-cff1-table.hh"
4		#include "hb-ot-cff2-table.hh"
5		#include "hb-ot-vorg-table.hh"
6
7
8		#ifndef HB_NO_SUBSET_CFF
9		template<>
10		struct hb_subset_plan_t::source_table_loader<const OT::cff1>
11		{
12		auto operator () (hb_subset_plan_t *plan)
13		HB_AUTO_RETURN (plan->accelerator ? plan->accelerator->cff1_accel :
14		plan->inprogress_accelerator ? plan->inprogress_accelerator->cff1_accel :
15		plan->cff1_accel)
16		};
17		template<>
18		struct hb_subset_plan_t::source_table_loader<const OT::cff2>
19		{
20		auto operator () (hb_subset_plan_t *plan)
21		HB_AUTO_RETURN (plan->accelerator ? plan->accelerator->cff2_accel :
22		plan->inprogress_accelerator ? plan->inprogress_accelerator->cff2_accel :
23		plan->cff2_accel)
24		};
25		#endif
26
27
28		bool _hb_subset_table_cff (hb_subset_plan_t plan, hb_vector_t<char> &buf, hb_tag_t tag, bool success)
29	451k	{
30	451k	#ifndef HB_NO_SUBSET_CFF
31	451k	switch (tag)
32	451k	{
33	2.82k	case HB_TAG('C','F','F',' '): *success = _hb_subset_table<const OT::cff1> (plan, buf); return true;
34	1.85k	case HB_TAG('C','F','F','2'): *success = _hb_subset_table<const OT::cff2> (plan, buf); return true;
35	191	case HB_TAG('V','O','R','G'): *success = _hb_subset_table<const OT::VORG> (plan, buf); return true;
36	451k	}
37	446k	#endif
38	446k	return false;
39	451k	}
40
41
42		#ifdef HB_EXPERIMENTAL_API
43		#ifndef HB_NO_CFF
44
45		template<typename accel_t>
46	0	static hb_blob_t* get_charstrings_data(accel_t& accel, hb_codepoint_t glyph_index) {
47	0	if (!accel.is_valid()) {
48	0	return hb_blob_get_empty ();
49	0	}
50
51	0	hb_ubytes_t bytes = (*accel.charStrings)[glyph_index];
52	0	if (!bytes) {
53	0	return hb_blob_get_empty ();
54	0	}
55
56	0	hb_blob_t* cff_blob = accel.get_blob();
57	0	uint32_t length;
58	0	const char* cff_data = hb_blob_get_data(cff_blob, &length) ;
59
60	0	long int offset = (const char*) bytes.arrayZ - cff_data;
61	0	if (offset < 0 \|\| offset > INT32_MAX) {
62	0	return hb_blob_get_empty ();
63	0	}
64
65	0	return hb_blob_create_sub_blob(cff_blob, (uint32_t) offset, bytes.length);
66	0	} Unexecuted instantiation: hb-subset-table-cff.cc:hb_blob_t* get_charstrings_data<OT::cff1_accelerator_t const>(OT::cff1_accelerator_t const&, unsigned int) Unexecuted instantiation: hb-subset-table-cff.cc:hb_blob_t* get_charstrings_data<OT::cff2_accelerator_t const>(OT::cff2_accelerator_t const&, unsigned int)
67
68		template<typename accel_t>
69	0	static hb_blob_t* get_charstrings_index(accel_t& accel) {
70	0	if (!accel.is_valid()) {
71	0	return hb_blob_get_empty ();
72	0	}
73
74	0	const char* charstrings_start = (const char*) accel.charStrings;
75	0	unsigned charstrings_length = accel.charStrings->get_size();
76
77	0	hb_blob_t* cff_blob = accel.get_blob();
78	0	uint32_t length;
79	0	const char* cff_data = hb_blob_get_data(cff_blob, &length) ;
80
81	0	long int offset = charstrings_start - cff_data;
82	0	if (offset < 0 \|\| offset > INT32_MAX) {
83	0	return hb_blob_get_empty ();
84	0	}
85
86	0	return hb_blob_create_sub_blob(cff_blob, (uint32_t) offset, charstrings_length);
87	0	} Unexecuted instantiation: hb-subset-table-cff.cc:hb_blob_t* get_charstrings_index<OT::cff1_accelerator_t const>(OT::cff1_accelerator_t const&) Unexecuted instantiation: hb-subset-table-cff.cc:hb_blob_t* get_charstrings_index<OT::cff2_accelerator_t const>(OT::cff2_accelerator_t const&)
88
89		/**
90		* hb_subset_cff_get_charstring_data:
91		* @face: A face object
92		* @glyph_index: Glyph index to get data for.
93		*
94		* Returns the raw outline data from the CFF/CFF2 table associated with the given glyph index.
95		*
96		* XSince: EXPERIMENTAL
97		**/
98		HB_EXTERN hb_blob_t*
99	0	hb_subset_cff_get_charstring_data(hb_face_t* face, hb_codepoint_t glyph_index) {
100	0	return get_charstrings_data(*face->table.cff1, glyph_index);
101	0	}
102
103		/**
104		* hb_subset_cff_get_charstrings_index:
105		* @face: A face object
106		*
107		* Returns the raw CFF CharStrings INDEX from the CFF table.
108		*
109		* XSince: EXPERIMENTAL
110		**/
111		HB_EXTERN hb_blob_t*
112	0	hb_subset_cff_get_charstrings_index (hb_face_t* face) {
113	0	return get_charstrings_index (*face->table.cff1);
114	0	}
115
116		/**
117		* hb_subset_cff2_get_charstring_data:
118		* @face: A face object
119		* @glyph_index: Glyph index to get data for.
120		*
121		* Returns the raw outline data from the CFF/CFF2 table associated with the given glyph index.
122		*
123		* XSince: EXPERIMENTAL
124		**/
125		HB_EXTERN hb_blob_t*
126	0	hb_subset_cff2_get_charstring_data(hb_face_t* face, hb_codepoint_t glyph_index) {
127	0	return get_charstrings_data(*face->table.cff2, glyph_index);
128	0	}
129
130		/**
131		* hb_subset_cff2_get_charstrings_index:
132		* @face: A face object
133		*
134		* Returns the raw CFF2 CharStrings INDEX from the CFF2 table.
135		*
136		* XSince: EXPERIMENTAL
137		**/
138		HB_EXTERN hb_blob_t*
139	0	hb_subset_cff2_get_charstrings_index (hb_face_t* face) {
140	0	return get_charstrings_index (*face->table.cff2);
141	0	}
142		#endif
143		#endif

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Created: 2025-10-10 06:25