summaryrefslogtreecommitdiff
path: root/Build/source/libs/harfbuzz/harfbuzz-src/src/gen-ucd-table.py
blob: 552c3c675c17b850c5db3a05477000d661bf287f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
#!/usr/bin/env python

from __future__ import print_function, division, absolute_import

import io, os.path, sys, re
import logging
logging.basicConfig(format='%(levelname)s: %(message)s', level=logging.INFO)

if len (sys.argv) not in (2, 3):
	print("usage: ./gen-ucd-table ucd.nounihan.grouped.xml [/path/to/hb-common.h]", file=sys.stderr)
	sys.exit(1)

# https://github.com/harfbuzz/packtab
import packTab
import packTab.ucdxml

logging.info('Loading UCDXML...')
ucdxml = packTab.ucdxml.load_ucdxml(sys.argv[1])
ucd = packTab.ucdxml.ucdxml_get_repertoire(ucdxml)

hb_common_h = 'hb-common.h' if len (sys.argv) < 3 else sys.argv[2]

logging.info('Preparing data tables...')

gc = [u['gc'] for u in ucd]
ccc = [int(u['ccc']) for u in ucd]
bmg = [int(v, 16) - int(u) if v else 0 for u,v in enumerate(u['bmg'] for u in ucd)]
#gc_ccc_non0 = set((cat,klass) for cat,klass in zip(gc,ccc) if klass)
#gc_bmg_non0 = set((cat,mirr) for cat,mirr in zip(gc, bmg) if mirr)

sc = [u['sc'] for u in ucd]

dm = {i:tuple(int(v, 16) for v in u['dm'].split()) for i,u in enumerate(ucd)
      if u['dm'] != '#' and u['dt'] == 'can' and not (0xAC00 <= i < 0xAC00+11172)}
ce = {i for i,u in enumerate(ucd) if u['Comp_Ex'] == 'Y'}

assert not any(v for v in dm.values() if len(v) not in (1,2))
dm1 = sorted(set(v for v in dm.values() if len(v) == 1))
assert all((v[0] >> 16) in (0,2) for v in dm1)
dm1_p0_array = ['0x%04Xu' % (v[0] & 0xFFFF) for v in dm1 if (v[0] >> 16) == 0]
dm1_p2_array = ['0x%04Xu' % (v[0] & 0xFFFF) for v in dm1 if (v[0] >> 16) == 2]
dm1_order = {v:i+1 for i,v in enumerate(dm1)}

dm2 = sorted((v+(i if i not in ce and not ccc[i] else 0,), v)
             for i,v in dm.items() if len(v) == 2)

filt = lambda v: ((v[0] & 0xFFFFF800) == 0x0000 and
                  (v[1] & 0xFFFFFF80) == 0x0300 and
                  (v[2] & 0xFFF0C000) == 0x0000)
dm2_u32_array = [v for v in dm2 if filt(v[0])]
dm2_u64_array = [v for v in dm2 if not filt(v[0])]
assert dm2_u32_array + dm2_u64_array == dm2
dm2_u32_array = ["HB_CODEPOINT_ENCODE3_11_7_14 (0x%04Xu, 0x%04Xu, 0x%04Xu)" % v[0] for v in dm2_u32_array]
dm2_u64_array = ["HB_CODEPOINT_ENCODE3 (0x%04Xu, 0x%04Xu, 0x%04Xu)" % v[0] for v in dm2_u64_array]

l = 1 + len(dm1_p0_array) + len(dm1_p2_array)
dm2_order = {v[1]:i+l for i,v in enumerate(dm2)}

dm_order = {None: 0}
dm_order.update(dm1_order)
dm_order.update(dm2_order)

gc_order = dict()
for i,v in enumerate(('Cc', 'Cf', 'Cn', 'Co', 'Cs', 'Ll', 'Lm', 'Lo', 'Lt', 'Lu',
                      'Mc', 'Me', 'Mn', 'Nd', 'Nl', 'No', 'Pc', 'Pd', 'Pe', 'Pf',
                      'Pi', 'Po', 'Ps', 'Sc', 'Sk', 'Sm', 'So', 'Zl', 'Zp', 'Zs',)):
    gc_order[i] = v
    gc_order[v] = i

sc_order = dict()
sc_array = []
sc_re = re.compile(r"\b(HB_SCRIPT_[_A-Z]*).*HB_TAG [(]'(.)','(.)','(.)','(.)'[)]")
for line in open(hb_common_h):
    m = sc_re.search (line)
    if not m: continue
    name = m.group(1)
    tag = ''.join(m.group(i) for i in range(2, 6))
    i = len(sc_array)
    sc_order[tag] = i
    sc_order[i] = tag
    sc_array.append(name)

DEFAULT = 1
COMPACT = 3
SLOPPY  = 5


logging.info('Generating output...')
print("/* == Start of generated table == */")
print("/*")
print(" * The following table is generated by running:")
print(" *")
print(" *   ./gen-ucd-table.py ucd.nounihan.grouped.xml")
print(" *")
print(" * on file with this description:", ucdxml.description)
print(" */")
print()
print("#ifndef HB_UCD_TABLE_HH")
print("#define HB_UCD_TABLE_HH")
print()
print('#include "hb.hh"')
print()

code = packTab.Code('_hb_ucd')
sc_array, _ = code.addArray('hb_script_t', 'sc_map', sc_array)
dm1_p0_array, _ = code.addArray('uint16_t', 'dm1_p0_map', dm1_p0_array)
dm1_p2_array, _ = code.addArray('uint16_t', 'dm1_p2_map', dm1_p2_array)
dm2_u32_array, _ = code.addArray('uint32_t', 'dm2_u32_map', dm2_u32_array)
dm2_u64_array, _ = code.addArray('uint64_t', 'dm2_u64_map', dm2_u64_array)
code.print_c(linkage='static inline')

datasets = [
    ('gc', gc, 'Cn', gc_order),
    ('ccc', ccc, 0, None),
    ('bmg', bmg, 0, None),
    ('sc', sc, 'Zzzz', sc_order),
    ('dm', dm, None, dm_order),
]

for compression in (DEFAULT, COMPACT, SLOPPY):
    logging.info('  Compression=%d:' % compression)
    print()
    if compression == DEFAULT:
        print('#ifndef HB_OPTIMIZE_SIZE')
    elif compression == COMPACT:
        print('#elif !defined(HB_NO_UCD_UNASSIGNED)')
    else:
        print('#else')
    print()

    if compression == SLOPPY:
        for i in range(len(gc)):
            if (i % 128) and gc[i] == 'Cn':
                gc[i] = gc[i - 1]
        for i in range(len(gc) - 2, -1, -1):
            if ((i + 1) % 128) and gc[i] == 'Cn':
                gc[i] = gc[i + 1]
        for i in range(len(sc)):
            if (i % 128) and sc[i] == 'Zzzz':
                sc[i] = sc[i - 1]
        for i in range(len(sc) - 2, -1, -1):
            if ((i + 1) % 128) and sc[i] == 'Zzzz':
                sc[i] = sc[i + 1]


    code = packTab.Code('_hb_ucd')

    for name,data,default,mapping in datasets:
        sol = packTab.pack_table(data, default, mapping=mapping, compression=compression)
        logging.info('      Dataset=%-8s FullCost=%d' % (name, sol.fullCost))
        sol.genCode(code, name)

    code.print_c(linkage='static inline')

    print()

print('#endif')
print()

print()
print("#endif /* HB_UCD_TABLE_HH */")
print()
print("/* == End of generated table == */")
logging.info('Done.')