summaryrefslogtreecommitdiffstats
path: root/runtime/tools/unicode.vim
blob: b518d0541f459f7ee8c85947eb1cb0fb6b144c93 (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
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
" Script to extract tables from Unicode .txt files, to be used in src/mbyte.c.
" The format of the UnicodeData.txt file is explained here:
" http://www.unicode.org/Public/5.1.0/ucd/UCD.html
" For the other files see the header.
"
" Might need to update the URL to the emoji-data.txt
" Usage: Vim -S <this-file>
"
" Author: Bram Moolenaar
" Last Update: 2010 Jan 12

" Parse lines of UnicodeData.txt.  Creates a list of lists in s:dataprops.
func! ParseDataToProps()
  let s:dataprops = []
  let lnum = 1
  while lnum <= line('$')
    let l = split(getline(lnum), '\s*;\s*', 1)
    if len(l) != 15
      echoerr 'Found ' . len(l) . ' items in line ' . lnum . ', expected 15'
      return
    endif
    call add(s:dataprops, l)
    let lnum += 1
  endwhile
endfunc

" Parse lines of CaseFolding.txt.  Creates a list of lists in s:foldprops.
func! ParseFoldProps()
  let s:foldprops = []
  let lnum = 1
  while lnum <= line('$')
    let line = getline(lnum)
    if line !~ '^#' && line !~ '^\s*$'
      let l = split(line, '\s*;\s*', 1)
      if len(l) != 4
        echoerr 'Found ' . len(l) . ' items in line ' . lnum . ', expected 4'
        return
      endif
      call add(s:foldprops, l)
    endif
    let lnum += 1
  endwhile
endfunc

" Parse lines of EastAsianWidth.txt.  Creates a list of lists in s:widthprops.
func! ParseWidthProps()
  let s:widthprops = []
  let lnum = 1
  while lnum <= line('$')
    let line = getline(lnum)
    if line !~ '^#' && line !~ '^\s*$'
      let l = split(line, '\s*;\s*', 1)
      if len(l) != 2
        echoerr 'Found ' . len(l) . ' items in line ' . lnum . ', expected 2'
        return
      endif
      call add(s:widthprops, l)
    endif
    let lnum += 1
  endwhile
endfunc

" Build the toLower or toUpper table in a new buffer.
" Uses s:dataprops.
func! BuildCaseTable(name, index)
  let start = -1
  let end = -1
  let step = 0
  let add = -1
  let ranges = []
  for p in s:dataprops
    if p[a:index] != ''
      let n = ('0x' . p[0]) + 0
      let nl = ('0x' . p[a:index]) + 0
      if start >= 0 && add == nl - n && (step == 0 || n - end == step)
        " continue with same range.
        let step = n - end
        let end = n
      else
        if start >= 0
          " produce previous range
          call Range(ranges, start, end, step, add)
        endif
        let start = n
        let end = n
        let step = 0
        let add = nl - n
      endif
    endif
  endfor
  if start >= 0
    call Range(ranges, start, end, step, add)
  endif

  " New buffer to put the result in.
  new
  exe "file to" . a:name
  call setline(1, "static convertStruct to" . a:name . "[] =")
  call setline(2, "{")
  call append('$', ranges)
  call setline('$', getline('$')[:-2])  " remove last comma
  call setline(line('$') + 1, "};")
  wincmd p
endfunc

" Build the foldCase table in a new buffer.
" Uses s:foldprops.
func! BuildFoldTable()
  let start = -1
  let end = -1
  let step = 0
  let add = -1
  let ranges = []
  for p in s:foldprops
    if p[1] == 'C' || p[1] == 'S'
      let n = ('0x' . p[0]) + 0
      let nl = ('0x' . p[2]) + 0
      if start >= 0 && add == nl - n && (step == 0 || n - end == step)
        " continue with same range.
        let step = n - end
        let end = n
      else
        if start >= 0
          " produce previous range
          call Range(ranges, start, end, step, add)
        endif
        let start = n
        let end = n
        let step = 0
        let add = nl - n
      endif
    endif
  endfor
  if start >= 0
    call Range(ranges, start, end, step, add)
  endif

  " New buffer to put the result in.
  new
  file foldCase
  call setline(1, "static convertStruct foldCase[] =")
  call setline(2, "{")
  call append('$', ranges)
  call setline('$', getline('$')[:-2])  " remove last comma
  call setline(line('$') + 1, "};")
  wincmd p
endfunc

func! Range(ranges, start, end, step, add)
  let s = printf("\t{0x%x,0x%x,%d,%d},", a:start, a:end, a:step == 0 ? -1 : a:step, a:add)
  call add(a:ranges, s)
endfunc

" Build the combining table.
" Uses s:dataprops.
func! BuildCombiningTable()
  let start = -1
  let end = -1
  let ranges = []
  for p in s:dataprops
    if p[2] == 'Mn' || p[2] == 'Mc' || p[2] == 'Me'
      let n = ('0x' . p[0]) + 0
      if start >= 0 && end + 1 == n
        " continue with same range.
        let end = n
      else
        if start >= 0
          " produce previous range
          call add(ranges, printf("\t{0x%04x, 0x%04x},", start, end))
        endif
        let start = n
        let end = n
      endif
    endif
  endfor
  if start >= 0
    call add(ranges, printf("\t{0x%04x, 0x%04x},", start, end))
  endif

  " New buffer to put the result in.
  new
  file combining
  call setline(1, "    static struct interval combining[] =")
  call setline(2, "    {")
  call append('$', ranges)
  call setline('$', getline('$')[:-2])  " remove last comma
  call setline(line('$') + 1, "    };")
  wincmd p
endfunc

" Build the double width or ambiguous width table in a new buffer.
" Uses s:widthprops and s:dataprops.
func! BuildWidthTable(pattern, tableName)
  let start = -1
  let end = -1
  let ranges = []
  let dataidx = 0
  for p in s:widthprops
    if p[1][0] =~ a:pattern
      if p[0] =~ '\.\.'
        " It is a range.  we don't check for composing char then.
        let rng = split(p[0], '\.\.')
        if len(rng) != 2
          echoerr "Cannot parse range: '" . p[0] . "' in width table"
        endif
        let n = ('0x' . rng[0]) + 0
        let n_last =  ('0x' . rng[1]) + 0
      else
        let n = ('0x' . p[0]) + 0
        let n_last = n
      endif
      " Find this char in the data table.
      while 1
        let dn = ('0x' . s:dataprops[dataidx][0]) + 0
        if dn >= n
          break
        endif
        let dataidx += 1
      endwhile
      if dn != n && n_last == n
        echoerr "Cannot find character " . n . " in data table"
      endif
      " Only use the char when it's not a composing char.
      " But use all chars from a range.
      let dp = s:dataprops[dataidx]
      if n_last > n || (dp[2] != 'Mn' && dp[2] != 'Mc' && dp[2] != 'Me')
        if start >= 0 && end + 1 == n
          " continue with same range.
        else
          if start >= 0
            " produce previous range
            call add(ranges, printf("\t{0x%04x, 0x%04x},", start, end))
	    if a:pattern == 'A'
	      call add(s:ambitable, [start, end])
	    else
	      call add(s:doubletable, [start, end])
	    endif
          endif
          let start = n
        endif
        let end = n_last
      endif
    endif
  endfor
  if start >= 0
    call add(ranges, printf("\t{0x%04x, 0x%04x},", start, end))
    if a:pattern == 'A'
      call add(s:ambitable, [start, end])
    else
      call add(s:doubletable, [start, end])
    endif
  endif

  " New buffer to put the result in.
  new
  exe "file " . a:tableName
  call setline(1, "    static struct interval " . a:tableName . "[] =")
  call setline(2, "    {")
  call append('$', ranges)
  call setline('$', getline('$')[:-2])  " remove last comma
  call setline(line('$') + 1, "    };")
  wincmd p
endfunc

" Build the amoji width table in a new buffer.
func! BuildEmojiTable(pattern, tableName)
  let alltokens = []
  let widthtokens = []
  let lines = map(filter(filter(getline(1, '$'), 'v:val=~"^[1-9]"'), 'v:val=~a:pattern'), 'matchstr(v:val,"^\\S\\+")')
  for n in range(len(lines))
    let line = lines[n]
    let token = split(line, '\.\.')
    let first = ('0x' . token[0]) + 0
    if len(token) == 1
      let last = first
    else
      let last = ('0x' . token[1]) + 0
    endif

    let token = [first, last]
    if len(alltokens) > 0 && (token[0] - 1 == alltokens[-1][1])
      let alltokens[-1][1] = token[1]
    else
      call add(alltokens, token)
    endif

    " Characters below 1F000 may be considered single width traditionally,
    " making them double width causes problems.
    if first < 0x1f000
      continue
    endif

    " exclude characters that are in the "ambiguous" or "doublewidth" table
    for ambi in s:ambitable
      if first >= ambi[0] && first <= ambi[1]
	let first = ambi[1] + 1
      endif
      if last >= ambi[0] && last <= ambi[1]
	let last = ambi[0] - 1
      endif
    endfor
    for double in s:doubletable
      if first >= double[0] && first <= double[1]
	let first = double[1] + 1
      endif
      if last >= double[0] && last <= double[1]
	let last = double[0] - 1
      endif
    endfor

    if first <= last
      let token = [first, last]
      if len(widthtokens) > 0 && (token[0] - 1 == widthtokens[-1][1])
	let widthtokens[-1][1] = token[1]
      else
	call add(widthtokens, token)
      endif
    endif
  endfor
  let allranges = map(alltokens, 'printf("\t{0x%04x, 0x%04x},", v:val[0], v:val[1])')
  let widthranges = map(widthtokens, 'printf("\t{0x%04x, 0x%04x},", v:val[0], v:val[1])')

  " New buffer to put the result in.
  new
  exe "file " . a:tableName . '_all'
  call setline(1, "    static struct interval " . a:tableName . "_all[] =")
  call setline(2, "    {")
  call append('$', allranges)
  call setline('$', getline('$')[:-2])  " remove last comma
  call setline(line('$') + 1, "    };")
  wincmd p

  " New buffer to put the result in.
  new
  exe "file " . a:tableName . '_width'
  call setline(1, "    static struct interval " . a:tableName . "_width[] =")
  call setline(2, "    {")
  call append('$', widthranges)
  call setline('$', getline('$')[:-2])  " remove last comma
  call setline(line('$') + 1, "    };")
  wincmd p
endfunc

" Try to avoid hitting E36
set equalalways

" Edit the Unicode text file.  Requires the netrw plugin.
edit http://unicode.org/Public/UNIDATA/UnicodeData.txt

" Parse each line, create a list of lists.
call ParseDataToProps()

" Build the toLower table.
call BuildCaseTable("Lower", 13)

" Build the toUpper table.
call BuildCaseTable("Upper", 12)

" Build the ranges of composing chars.
call BuildCombiningTable()

" Edit the case folding text file.  Requires the netrw plugin.
edit http://www.unicode.org/Public/UNIDATA/CaseFolding.txt

" Parse each line, create a list of lists.
call ParseFoldProps()

" Build the foldCase table.
call BuildFoldTable()

" Edit the width text file.  Requires the netrw plugin.
edit http://www.unicode.org/Public/UNIDATA/EastAsianWidth.txt

" Parse each line, create a list of lists.
call ParseWidthProps()

" Build the double width table.
let s:doubletable = []
call BuildWidthTable('[WF]', 'doublewidth')

" Build the ambiguous width table.
let s:ambitable = []
call BuildWidthTable('A', 'ambiguous')

" Edit the emoji text file.  Requires the netrw plugin.
edit https://www.unicode.org/Public/emoji/11.0/emoji-data.txt
"edit http://www.unicode.org/Public/emoji/latest/emoji-data.txt

" Build the emoji table. Ver. 1.0 - 6.0
" Must come after the "ambiguous" table
call BuildEmojiTable('; Emoji\s\+#\s\+\d\+\.\d', 'emoji')