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flutter / third_party / harfbuzz / e600e5440b3b77294df47fae947758137ea02501 / . / src / hb-subset-cff-common.hh
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/*
* Copyright © 2018 Adobe Systems Incorporated.
*
* 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.
*
* Adobe Author(s): Michiharu Ariza
*/
#ifndef HB_SUBSET_CFF_COMMON_HH
#define HB_SUBSET_CFF_COMMON_HH
#include "hb.hh"
#include "hb-subset-plan.hh"
#include "hb-cff-interp-cs-common.hh"
namespace CFF {
/* Used for writing a temporary charstring */
struct StrEncoder
{
inline StrEncoder (StrBuff &buff_)
: buff (buff_), error (false)
{}
inline void reset (void)
{
buff.resize (0);
}
inline void encode_byte (unsigned char b)
{
if (unlikely (buff.push ((const char)b) == &Crap(char)))
set_error ();
}
inline void encode_int (int v)
{
if ((-1131 <= v) && (v <= 1131))
{
if ((-107 <= v) && (v <= 107))
encode_byte (v + 139);
else if (v > 0)
{
v -= 108;
encode_byte ((v >> 8) + OpCode_TwoBytePosInt0);
encode_byte (v & 0xFF);
}
else
{
v = -v - 108;
encode_byte ((v >> 8) + OpCode_TwoByteNegInt0);
encode_byte (v & 0xFF);
}
}
else
{
if (unlikely (v < -32768))
v = -32768;
else if (unlikely (v > 32767))
v = 32767;
encode_byte (OpCode_shortint);
encode_byte ((v >> 8) & 0xFF);
encode_byte (v & 0xFF);
}
}
inline void encode_num (const Number& n)
{
if (n.in_int_range ())
{
encode_int (n.to_int ());
}
else
{
int32_t v = n.to_fixed ();
encode_byte (OpCode_fixedcs);
encode_byte ((v >> 24) & 0xFF);
encode_byte ((v >> 16) & 0xFF);
encode_byte ((v >> 8) & 0xFF);
encode_byte (v & 0xFF);
}
}
inline void encode_op (OpCode op)
{
if (Is_OpCode_ESC (op))
{
encode_byte (OpCode_escape);
encode_byte (Unmake_OpCode_ESC (op));
}
else
encode_byte (op);
}
inline void copy_str (const ByteStr &str)
{
unsigned int offset = buff.len;
buff.resize (offset + str.len);
if (unlikely (buff.len < offset + str.len))
{
set_error ();
return;
}
memcpy (&buff[offset], &str.str[0], str.len);
}
inline bool is_error (void) const { return error; }
protected:
inline void set_error (void) { error = true; }
StrBuff &buff;
bool error;
};
struct CFFSubTableOffsets {
inline CFFSubTableOffsets (void)
: privateDictsOffset (0)
{
topDictInfo.init ();
FDSelectInfo.init ();
FDArrayInfo.init ();
charStringsInfo.init ();
globalSubrsInfo.init ();
localSubrsInfos.init ();
}
inline ~CFFSubTableOffsets (void)
{
localSubrsInfos.fini ();
}
TableInfo topDictInfo;
TableInfo FDSelectInfo;
TableInfo FDArrayInfo;
TableInfo charStringsInfo;
unsigned int privateDictsOffset;
TableInfo globalSubrsInfo;
hb_vector_t<TableInfo> localSubrsInfos;
};
template <typename OPSTR=OpStr>
struct CFFTopDict_OpSerializer : OpSerializer
{
inline bool serialize (hb_serialize_context_t *c,
const OPSTR &opstr,
const CFFSubTableOffsets &offsets) const
{
TRACE_SERIALIZE (this);
switch (opstr.op)
{
case OpCode_CharStrings:
return_trace (FontDict::serialize_offset4_op(c, opstr.op, offsets.charStringsInfo.offset));
case OpCode_FDArray:
return_trace (FontDict::serialize_offset4_op(c, opstr.op, offsets.FDArrayInfo.offset));
case OpCode_FDSelect:
return_trace (FontDict::serialize_offset4_op(c, opstr.op, offsets.FDSelectInfo.offset));
default:
return_trace (copy_opstr (c, opstr));
}
return_trace (true);
}
inline unsigned int calculate_serialized_size (const OPSTR &opstr) const
{
switch (opstr.op)
{
case OpCode_CharStrings:
case OpCode_FDArray:
case OpCode_FDSelect:
return OpCode_Size (OpCode_longintdict) + 4 + OpCode_Size (opstr.op);
default:
return opstr.str.len;
}
}
};
struct CFFFontDict_OpSerializer : OpSerializer
{
inline bool serialize (hb_serialize_context_t *c,
const OpStr &opstr,
const TableInfo &privateDictInfo) const
{
TRACE_SERIALIZE (this);
if (opstr.op == OpCode_Private)
{
/* serialize the private dict size & offset as 2-byte & 4-byte integers */
if (unlikely (!UnsizedByteStr::serialize_int2 (c, privateDictInfo.size) ||
!UnsizedByteStr::serialize_int4 (c, privateDictInfo.offset)))
return_trace (false);
/* serialize the opcode */
HBUINT8 *p = c->allocate_size<HBUINT8> (1);
if (unlikely (p == nullptr)) return_trace (false);
p->set (OpCode_Private);
return_trace (true);
}
else
{
HBUINT8 *d = c->allocate_size<HBUINT8> (opstr.str.len);
if (unlikely (d == nullptr)) return_trace (false);
memcpy (d, &opstr.str.str[0], opstr.str.len);
}
return_trace (true);
}
inline unsigned int calculate_serialized_size (const OpStr &opstr) const
{
if (opstr.op == OpCode_Private)
return OpCode_Size (OpCode_longintdict) + 4 + OpCode_Size (OpCode_shortint) + 2 + OpCode_Size (OpCode_Private);
else
return opstr.str.len;
}
};
struct CFFPrivateDict_OpSerializer : OpSerializer
{
inline CFFPrivateDict_OpSerializer (bool desubroutinize_, bool drop_hints_)
: desubroutinize (desubroutinize_), drop_hints (drop_hints_) {}
inline bool serialize (hb_serialize_context_t *c,
const OpStr &opstr,
const unsigned int subrsOffset) const
{
TRACE_SERIALIZE (this);
if (drop_hints && DictOpSet::is_hint_op (opstr.op))
return true;
if (opstr.op == OpCode_Subrs)
{
if (desubroutinize)
return_trace (true);
else
return_trace (FontDict::serialize_offset4_op (c, opstr.op, subrsOffset));
}
else
return_trace (copy_opstr (c, opstr));
}
inline unsigned int calculate_serialized_size (const OpStr &opstr) const
{
if (drop_hints && DictOpSet::is_hint_op (opstr.op))
return 0;
if (opstr.op == OpCode_Subrs)
{
if (desubroutinize)
return 0;
else
return OpCode_Size (OpCode_longintdict) + 4 + OpCode_Size (opstr.op);
}
else
return opstr.str.len;
}
protected:
const bool desubroutinize;
const bool drop_hints;
};
struct FlattenParam
{
StrBuff &flatStr;
bool drop_hints;
};
template <typename ACC, typename ENV, typename OPSET>
struct SubrFlattener
{
inline SubrFlattener (const ACC &acc_,
const hb_vector_t<hb_codepoint_t> &glyphs_,
bool drop_hints_)
: acc (acc_),
glyphs (glyphs_),
drop_hints (drop_hints_)
{}
inline bool flatten (StrBuffArray &flat_charstrings)
{
if (!flat_charstrings.resize (glyphs.len))
return false;
for (unsigned int i = 0; i < glyphs.len; i++)
flat_charstrings[i].init ();
for (unsigned int i = 0; i < glyphs.len; i++)
{
hb_codepoint_t glyph = glyphs[i];
const ByteStr str = (*acc.charStrings)[glyph];
unsigned int fd = acc.fdSelect->get_fd (glyph);
CSInterpreter<ENV, OPSET, FlattenParam> interp;
interp.env.init (str, acc, fd);
FlattenParam param = { flat_charstrings[i], drop_hints };
if (unlikely (!interp.interpret (param)))
return false;
}
return true;
}
const ACC &acc;
const hb_vector_t<hb_codepoint_t> &glyphs;
bool drop_hints;
};
struct SubrClosures
{
inline SubrClosures (void)
: valid (false),
global_closure (nullptr)
{
local_closures.init ();
}
inline void init (unsigned int fd_count)
{
valid = true;
global_closure = hb_set_create ();
if (global_closure == hb_set_get_empty ())
valid = false;
if (!local_closures.resize (fd_count))
valid = false;
for (unsigned int i = 0; i < local_closures.len; i++)
{
local_closures[i] = hb_set_create ();
if (local_closures[i] == hb_set_get_empty ())
valid = false;
}
}
inline void fini (void)
{
hb_set_destroy (global_closure);
for (unsigned int i = 0; i < local_closures.len; i++)
hb_set_destroy (local_closures[i]);
local_closures.fini ();
}
inline void reset (void)
{
hb_set_clear (global_closure);
for (unsigned int i = 0; i < local_closures.len; i++)
hb_set_clear (local_closures[i]);
}
bool is_valid (void) const { return valid; }
bool valid;
hb_set_t *global_closure;
hb_vector_t<hb_set_t *> local_closures;
};
struct ParsedCSOp : OpStr
{
inline void init (unsigned int subr_num_ = 0)
{
OpStr::init ();
flags = kDropFlag_None;
subr_num = subr_num_;
}
inline void fini (void)
{
OpStr::fini ();
}
inline bool for_keep (void) const { return (flags & kDropFlag_Keep) != 0; }
inline bool for_drop (void) const { return (flags & kDropFlag_Drop) != 0; }
inline void set_drop (void) { if (!for_keep ()) flags |= kDropFlag_Drop; }
inline void set_keep (void) { flags |= kDropFlag_Keep; }
enum DropFlag
{
kDropFlag_None = 0,
kDropFlag_Drop = 1,
kDropFlag_Keep = 2
};
unsigned int flags;
unsigned int subr_num;
};
struct ParsedCStr : ParsedValues<ParsedCSOp>
{
inline void init (void)
{
SUPER::init ();
parsed = false;
hint_removed = false;
has_prefix_ = false;
}
inline void add_op (OpCode op, const SubByteStr& substr)
{
if (!is_parsed ())
SUPER::add_op (op, substr);
}
inline void addCallOp (OpCode op, const SubByteStr& substr, unsigned int subr_num)
{
if (!is_parsed ())
{
unsigned int parsed_len = get_count ();
if (likely (parsed_len > 0))
values[parsed_len-1].set_drop ();
ParsedCSOp val;
val.init (subr_num);
SUPER::add_op (op, substr, val);
}
}
inline void set_prefix (const Number &num, OpCode op = OpCode_Invalid)
{
has_prefix_ = true;
prefix_op_ = op;
prefix_num_ = num;
}
inline bool is_parsed (void) const { return parsed; }
inline void set_parsed (void) { parsed = true; }
inline bool is_hint_removed (void) const { return hint_removed; }
inline void set_hint_removed (void) { hint_removed = true; }
inline bool has_prefix (void) const { return has_prefix_; }
inline OpCode prefix_op (void) const { return prefix_op_; }
inline const Number &prefix_num (void) const { return prefix_num_; }
protected:
bool parsed;
bool hint_removed;
bool has_prefix_;
OpCode prefix_op_;
Number prefix_num_;
private:
typedef ParsedValues<ParsedCSOp> SUPER;
};
struct ParsedCStrs : hb_vector_t<ParsedCStr>
{
inline void init (unsigned int len_ = 0)
{
hb_vector_t<ParsedCStr>::init ();
resize (len_);
for (unsigned int i = 0; i < len; i++)
(*this)[i].init ();
}
};
struct SubrSubsetParam
{
inline void init (ParsedCStr *parsed_charstring_,
ParsedCStrs *parsed_global_subrs_, ParsedCStrs *parsed_local_subrs_,
hb_set_t *global_closure_, hb_set_t *local_closure_,
bool drop_hints_)
{
parsed_charstring = parsed_charstring_;
current_parsed_str = parsed_charstring;
parsed_global_subrs = parsed_global_subrs_;
parsed_local_subrs = parsed_local_subrs_;
global_closure = global_closure_;
local_closure = local_closure_;
drop_hints = drop_hints_;
}
template <typename ENV>
inline void set_current_str (ENV &env)
{
const CallContext &context = env.context;
switch (context.type)
{
case CSType_CharString:
current_parsed_str = parsed_charstring;
break;
case CSType_LocalSubr:
if (likely (context.subr_num < parsed_local_subrs->len))
current_parsed_str = &(*parsed_local_subrs)[context.subr_num];
else
env.set_error ();
break;
case CSType_GlobalSubr:
if (likely (context.subr_num < parsed_global_subrs->len))
current_parsed_str = &(*parsed_global_subrs)[context.subr_num];
else
env.set_error ();
break;
default:
assert (0);
}
}
ParsedCStr *current_parsed_str;
ParsedCStr *parsed_charstring;
ParsedCStrs *parsed_global_subrs;
ParsedCStrs *parsed_local_subrs;
hb_set_t *global_closure;
hb_set_t *local_closure;
bool drop_hints;
};
struct SubrRemap : Remap
{
inline void create (hb_set_t *closure)
{
/* create a remapping of subroutine numbers from old to new.
* no optimization based on usage counts. fonttools doesn't appear doing that either.
*/
reset (closure->get_max () + 1);
for (hb_codepoint_t old_num = 0; old_num < len; old_num++)
{
if (hb_set_has (closure, old_num))
add (old_num);
}
if (get_count () < 1240)
bias = 107;
else if (get_count () < 33900)
bias = 1131;
else
bias = 32768;
}
inline hb_codepoint_t operator[] (unsigned int old_num) const
{
if (old_num >= len)
return CFF_UNDEF_CODE;
else
return Remap::operator[] (old_num);
}
inline int biased_num (unsigned int old_num) const
{
return (int)(*this)[old_num] - bias;
}
protected:
int bias;
};
struct SubrRemaps
{
inline SubrRemaps (void)
{
global_remap.init ();
local_remaps.init ();
}
inline ~SubrRemaps (void)
{
fini ();
}
inline void init (unsigned int fdCount)
{
local_remaps.resize (fdCount);
for (unsigned int i = 0; i < fdCount; i++)
local_remaps[i].init ();
}
inline void create (SubrClosures& closures)
{
global_remap.create (closures.global_closure);
for (unsigned int i = 0; i < local_remaps.len; i++)
local_remaps[i].create (closures.local_closures[i]);
}
inline void fini (void)
{
global_remap.fini ();
local_remaps.fini_deep ();
}
SubrRemap global_remap;
hb_vector_t<SubrRemap> local_remaps;
};
template <typename SUBSETTER, typename SUBRS, typename ACC, typename ENV, typename OPSET>
struct SubrSubsetter
{
inline SubrSubsetter (void)
{
parsed_charstrings.init ();
parsed_global_subrs.init ();
parsed_local_subrs.init ();
}
inline ~SubrSubsetter (void)
{
closures.fini ();
remaps.fini ();
parsed_charstrings.fini_deep ();
parsed_global_subrs.fini_deep ();
parsed_local_subrs.fini_deep ();
}
/* Subroutine subsetting with --no-desubroutinize runs in phases:
*
* 1. execute charstrings/subroutines to determine subroutine closures
* 2. parse out all operators and numbers
* 3. mark hint operators and operands for removal if --no-hinting
* 4. re-encode all charstrings and subroutines with new subroutine numbers
*
* Phases #1 and #2 are done at the same time in collect_subrs ().
* Phase #3 requires walking charstrings/subroutines forward then backward (hence parsing), because
* we can't tell if a number belongs to a hint op until we see the first moveto.
*
* Assumption: a callsubr/callgsubr operator must immediately follow a (biased) subroutine number
* within the same charstring/subroutine, e.g., not split across a charstring and a subroutine.
*/
inline bool subset (ACC &acc, const hb_vector_t<hb_codepoint_t> &glyphs, bool drop_hints)
{
closures.init (acc.fdCount);
remaps.init (acc.fdCount);
parsed_charstrings.init (glyphs.len);
parsed_global_subrs.init (acc.globalSubrs->count);
parsed_local_subrs.resize (acc.fdCount);
for (unsigned int i = 0; i < acc.fdCount; i++)
{
parsed_local_subrs[i].init (acc.privateDicts[i].localSubrs->count);
}
if (unlikely (!closures.valid))
return false;
/* phase 1 & 2 */
for (unsigned int i = 0; i < glyphs.len; i++)
{
hb_codepoint_t glyph = glyphs[i];
const ByteStr str = (*acc.charStrings)[glyph];
unsigned int fd = acc.fdSelect->get_fd (glyph);
CSInterpreter<ENV, OPSET, SubrSubsetParam> interp;
interp.env.init (str, acc, fd);
SubrSubsetParam param;
param.init (&parsed_charstrings[i],
&parsed_global_subrs, &parsed_local_subrs[fd],
closures.global_closure, closures.local_closures[fd],
drop_hints);
if (unlikely (!interp.interpret (param)))
return false;
/* copy CFF1 width or CFF2 vsindex to the parsed charstring for encoding */
SUBSETTER::set_parsed_prefix (interp.env, parsed_charstrings[i]);
}
if (drop_hints)
{
/* mark hint ops and arguments for drop */
for (unsigned int i = 0; i < glyphs.len; i++)
{
unsigned int fd = acc.fdSelect->get_fd (glyphs[i]);
SubrSubsetParam param;
param.init (&parsed_charstrings[i],
&parsed_global_subrs, &parsed_local_subrs[fd],
closures.global_closure, closures.local_closures[fd],
drop_hints);
bool seen_moveto = false;
if (drop_hints_in_str (parsed_charstrings[i], param, seen_moveto))
parsed_charstrings[i].set_hint_removed ();
}
/* after dropping hints recreate closures from subrs actually used */
closures.reset ();
for (unsigned int i = 0; i < glyphs.len; i++)
{
unsigned int fd = acc.fdSelect->get_fd (glyphs[i]);
SubrSubsetParam param;
param.init (&parsed_charstrings[i],
&parsed_global_subrs, &parsed_local_subrs[fd],
closures.global_closure, closures.local_closures[fd],
drop_hints);
collect_subr_refs_in_str (parsed_charstrings[i], param);
}
}
remaps.create (closures);
return true;
}
inline bool encode_charstrings (ACC &acc, const hb_vector_t<hb_codepoint_t> &glyphs, StrBuffArray &buffArray) const
{
if (unlikely (!buffArray.resize (glyphs.len)))
return false;
for (unsigned int i = 0; i < glyphs.len; i++)
{
unsigned int fd = acc.fdSelect->get_fd (glyphs[i]);
if (unlikely (!encode_str (parsed_charstrings[i], fd, buffArray[i])))
return false;
}
return true;
}
inline bool encode_subrs (const ParsedCStrs &subrs, const SubrRemap& remap, StrBuffArray &buffArray) const
{
unsigned int count = remap.get_count ();
if (unlikely (!buffArray.resize (count)))
return false;
for (unsigned int old_num = 0; old_num < subrs.len; old_num++)
{
hb_codepoint_t new_num = remap[old_num];
if (new_num != CFF_UNDEF_CODE)
{
if (unlikely (!encode_str (subrs[old_num], 0, buffArray[new_num])))
return false;
}
}
return true;
}
inline bool encode_globalsubrs (StrBuffArray &buffArray)
{
return encode_subrs (parsed_global_subrs, remaps.global_remap, buffArray);
}
inline bool encode_localsubrs (unsigned int fd, StrBuffArray &buffArray) const
{
return encode_subrs (parsed_local_subrs[fd], remaps.local_remaps[fd], buffArray);
}
protected:
inline bool drop_hints_in_subr (ParsedCStr &str, unsigned int pos,
ParsedCStrs &subrs, unsigned int subr_num,
const SubrSubsetParam &param, bool &seen_moveto)
{
if (drop_hints_in_str (subrs[subr_num], param, seen_moveto))
{
/* if the first op in the subr is a hint op, then all args/ops (especially including other subr calls)
* preceding this subr no and call op are hints */
/* TODO CFF2 vsindex */
for (unsigned int i = 0; i + 1 < pos; i++)
str.values[i].set_drop ();
return true;
}
else
return false;
}
/* returns true if it sees a hint op before moveto */
inline bool drop_hints_in_str (ParsedCStr &str, const SubrSubsetParam &param, bool &seen_moveto)
{
bool seen_hint = false;
unsigned int next_check_pos = 0;
for (unsigned int pos = 0; pos < str.values.len; pos++)
{
switch (str.values[pos].op)
{
case OpCode_callsubr:
seen_hint |= drop_hints_in_subr (str, pos,
*param.parsed_local_subrs, str.values[pos].subr_num,
param, seen_moveto);
break;
case OpCode_callgsubr:
seen_hint |= drop_hints_in_subr (str, pos,
*param.parsed_global_subrs, str.values[pos].subr_num,
param, seen_moveto);
break;
case OpCode_rmoveto:
case OpCode_hmoveto:
case OpCode_vmoveto:
seen_moveto = true;
break;
case OpCode_hintmask:
case OpCode_cntrmask:
if (seen_moveto)
{
str.values[pos].set_drop ();
break;
}
HB_FALLTHROUGH;
case OpCode_hstemhm:
case OpCode_vstemhm:
case OpCode_hstem:
case OpCode_vstem:
seen_hint = true;
for (unsigned int i = next_check_pos; i <= pos; i++)
{
/* TODO: CFF2 vsindex */
str.values[i].set_drop ();
}
next_check_pos = pos + 1;
break;
default:
/* NONE */
break;
}
}
return seen_hint;
}
inline void collect_subr_refs_in_subr (ParsedCStr &str, unsigned int pos,
unsigned int subr_num, ParsedCStrs &subrs,
hb_set_t *closure,
const SubrSubsetParam &param)
{
hb_set_add (closure, subr_num);
collect_subr_refs_in_str (subrs[subr_num], param);
}
inline void collect_subr_refs_in_str (ParsedCStr &str, const SubrSubsetParam &param)
{
for (unsigned int pos = 0; pos < str.values.len; pos++)
{
if (!str.values[pos].for_drop ())
{
switch (str.values[pos].op)
{
case OpCode_callsubr:
collect_subr_refs_in_subr (str, pos,
str.values[pos].subr_num, *param.parsed_local_subrs,
param.local_closure, param);
break;
case OpCode_callgsubr:
collect_subr_refs_in_subr (str, pos,
str.values[pos].subr_num, *param.parsed_global_subrs,
param.global_closure, param);
break;
default: break;
}
}
}
}
inline bool encode_str (const ParsedCStr &str, const unsigned int fd, StrBuff &buff) const
{
buff.init ();
StrEncoder encoder (buff);
encoder.reset ();
/* if a prefix (CFF1 width or CFF2 vsindex) has been removed along with hints,
* re-insert it at the beginning of charstreing */
if (str.has_prefix () && str.is_hint_removed ())
{
encoder.encode_num (str.prefix_num ());
if (str.prefix_op () != OpCode_Invalid)
encoder.encode_op (str.prefix_op ());
}
for (unsigned int i = 0; i < str.get_count(); i++)
{
const ParsedCSOp &opstr = str.values[i];
if (!opstr.for_drop ())
{
switch (opstr.op)
{
case OpCode_callsubr:
encoder.encode_int (remaps.local_remaps[fd].biased_num (opstr.subr_num));
encoder.encode_op (OpCode_callsubr);
break;
case OpCode_callgsubr:
encoder.encode_int (remaps.global_remap.biased_num (opstr.subr_num));
encoder.encode_op (OpCode_callgsubr);
break;
default:
encoder.copy_str (opstr.str);
break;
}
}
}
return !encoder.is_error ();
}
protected:
SubrClosures closures;
ParsedCStrs parsed_charstrings;
ParsedCStrs parsed_global_subrs;
hb_vector_t<ParsedCStrs> parsed_local_subrs;
SubrRemaps remaps;
private:
typedef typename SUBRS::count_type subr_count_type;
};
}; /* namespace CFF */
HB_INTERNAL bool
hb_plan_subset_cff_fdselect (const hb_vector_t<hb_codepoint_t> &glyphs,
unsigned int fdCount,
const CFF::FDSelect &src, /* IN */
unsigned int &subset_fd_count /* OUT */,
unsigned int &subset_fdselect_size /* OUT */,
unsigned int &subset_fdselect_format /* OUT */,
hb_vector_t<CFF::code_pair> &fdselect_ranges /* OUT */,
CFF::Remap &fdmap /* OUT */);
HB_INTERNAL bool
hb_serialize_cff_fdselect (hb_serialize_context_t *c,
unsigned int num_glyphs,
const CFF::FDSelect &src,
unsigned int fd_count,
unsigned int fdselect_format,
unsigned int size,
const hb_vector_t<CFF::code_pair> &fdselect_ranges,
const CFF::Remap &fdmap);
#endif /* HB_SUBSET_CFF_COMMON_HH */