Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/harfbuzz/src/OT/Layout/GSUB/AlternateSubstFormat1.hh @ 17:dd9cdb856310

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Remove PKG-INFO from the because it is regenerated automatically for the sdist
author Franz Glasner <fzglas.hg@dom66.de>
date Thu, 18 Sep 2025 17:40:40 +0200
parents b50eed0cc0ef
children
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1 #ifndef OT_LAYOUT_GSUB_ALTERNATESUBSTFORMAT1_HH
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2 #define OT_LAYOUT_GSUB_ALTERNATESUBSTFORMAT1_HH
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4 #include "AlternateSet.hh"
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5 #include "Common.hh"
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7 namespace OT {
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8 namespace Layout {
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9 namespace GSUB_impl {
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11 template <typename Types>
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12 struct AlternateSubstFormat1_2
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13 {
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14 protected:
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15 HBUINT16 format; /* Format identifier--format = 1 */
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16 typename Types::template OffsetTo<Coverage>
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17 coverage; /* Offset to Coverage table--from
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18 * beginning of Substitution table */
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19 Array16Of<typename Types::template OffsetTo<AlternateSet<Types>>>
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20 alternateSet; /* Array of AlternateSet tables
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21 * ordered by Coverage Index */
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22 public:
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23 DEFINE_SIZE_ARRAY (2 + 2 * Types::size, alternateSet);
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25 bool sanitize (hb_sanitize_context_t *c) const
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26 {
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27 TRACE_SANITIZE (this);
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28 return_trace (coverage.sanitize (c, this) && alternateSet.sanitize (c, this));
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29 }
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31 bool intersects (const hb_set_t *glyphs) const
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32 { return (this+coverage).intersects (glyphs); }
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33
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34 bool may_have_non_1to1 () const
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35 { return false; }
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37 void closure (hb_closure_context_t *c) const
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38 {
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39 + hb_zip (this+coverage, alternateSet)
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40 | hb_filter (c->parent_active_glyphs (), hb_first)
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41 | hb_map (hb_second)
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42 | hb_map (hb_add (this))
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43 | hb_apply ([c] (const AlternateSet<Types> &_) { _.closure (c); })
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44 ;
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45 }
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47 void closure_lookups (hb_closure_lookups_context_t *c) const {}
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49 void collect_glyphs (hb_collect_glyphs_context_t *c) const
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50 {
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51 if (unlikely (!(this+coverage).collect_coverage (c->input))) return;
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52 + hb_zip (this+coverage, alternateSet)
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53 | hb_map (hb_second)
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54 | hb_map (hb_add (this))
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55 | hb_apply ([c] (const AlternateSet<Types> &_) { _.collect_glyphs (c); })
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56 ;
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57 }
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59 const Coverage &get_coverage () const { return this+coverage; }
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61 bool would_apply (hb_would_apply_context_t *c) const
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62 { return c->len == 1 && (this+coverage).get_coverage (c->glyphs[0]) != NOT_COVERED; }
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64 unsigned
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65 get_glyph_alternates (hb_codepoint_t gid,
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66 unsigned start_offset,
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67 unsigned *alternate_count /* IN/OUT. May be NULL. */,
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68 hb_codepoint_t *alternate_glyphs /* OUT. May be NULL. */) const
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69 { return (this+alternateSet[(this+coverage).get_coverage (gid)])
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70 .get_alternates (start_offset, alternate_count, alternate_glyphs); }
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72 bool apply (hb_ot_apply_context_t *c) const
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73 {
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74 TRACE_APPLY (this);
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76 unsigned int index = (this+coverage).get_coverage (c->buffer->cur().codepoint);
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77 if (likely (index == NOT_COVERED)) return_trace (false);
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79 return_trace ((this+alternateSet[index]).apply (c));
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80 }
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82 bool serialize (hb_serialize_context_t *c,
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83 hb_sorted_array_t<const HBGlyphID16> glyphs,
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84 hb_array_t<const unsigned int> alternate_len_list,
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85 hb_array_t<const HBGlyphID16> alternate_glyphs_list)
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86 {
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87 TRACE_SERIALIZE (this);
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88 if (unlikely (!c->extend_min (this))) return_trace (false);
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89 if (unlikely (!alternateSet.serialize (c, glyphs.length))) return_trace (false);
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90 for (unsigned int i = 0; i < glyphs.length; i++)
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91 {
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92 unsigned int alternate_len = alternate_len_list[i];
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93 if (unlikely (!alternateSet[i]
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94 .serialize_serialize (c, alternate_glyphs_list.sub_array (0, alternate_len))))
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95 return_trace (false);
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96 alternate_glyphs_list += alternate_len;
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97 }
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98 return_trace (coverage.serialize_serialize (c, glyphs));
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99 }
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100
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101 bool subset (hb_subset_context_t *c) const
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102 {
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103 TRACE_SUBSET (this);
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104 const hb_set_t &glyphset = *c->plan->glyphset_gsub ();
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105 const hb_map_t &glyph_map = *c->plan->glyph_map;
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106
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107 auto *out = c->serializer->start_embed (*this);
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108 if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
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109 out->format = format;
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110
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111 hb_sorted_vector_t<hb_codepoint_t> new_coverage;
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112 + hb_zip (this+coverage, alternateSet)
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113 | hb_filter (glyphset, hb_first)
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114 | hb_filter (subset_offset_array (c, out->alternateSet, this), hb_second)
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115 | hb_map (hb_first)
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116 | hb_map (glyph_map)
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117 | hb_sink (new_coverage)
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118 ;
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119 out->coverage.serialize_serialize (c->serializer, new_coverage.iter ());
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120 return_trace (bool (new_coverage));
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121 }
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122 };
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123
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124 }
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125 }
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126 }
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127
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128 #endif /* OT_LAYOUT_GSUB_ALTERNATESUBSTFORMAT1_HH */