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da4d7a92d5
Problem: Unicode double-width characters are not up-to date. Solution: Produce the double-width table like the others.
291 lines
7.2 KiB
VimL
291 lines
7.2 KiB
VimL
" Script to extract tables from Unicode .txt files, to be used in src/mbyte.c.
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" The format of the UnicodeData.txt file is explained here:
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" http://www.unicode.org/Public/5.1.0/ucd/UCD.html
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" For the other files see the header.
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"
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" Usage: Vim -S <this-file>
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"
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" Author: Bram Moolenaar
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" Last Update: 2010 Jan 12
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" Parse lines of UnicodeData.txt. Creates a list of lists in s:dataprops.
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func! ParseDataToProps()
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let s:dataprops = []
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let lnum = 1
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while lnum <= line('$')
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let l = split(getline(lnum), '\s*;\s*', 1)
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if len(l) != 15
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echoerr 'Found ' . len(l) . ' items in line ' . lnum . ', expected 15'
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return
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endif
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call add(s:dataprops, l)
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let lnum += 1
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endwhile
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endfunc
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" Parse lines of CaseFolding.txt. Creates a list of lists in s:foldprops.
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func! ParseFoldProps()
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let s:foldprops = []
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let lnum = 1
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while lnum <= line('$')
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let line = getline(lnum)
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if line !~ '^#' && line !~ '^\s*$'
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let l = split(line, '\s*;\s*', 1)
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if len(l) != 4
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echoerr 'Found ' . len(l) . ' items in line ' . lnum . ', expected 4'
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return
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endif
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call add(s:foldprops, l)
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endif
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let lnum += 1
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endwhile
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endfunc
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" Parse lines of EastAsianWidth.txt. Creates a list of lists in s:widthprops.
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func! ParseWidthProps()
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let s:widthprops = []
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let lnum = 1
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while lnum <= line('$')
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let line = getline(lnum)
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if line !~ '^#' && line !~ '^\s*$'
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let l = split(line, '\s*;\s*', 1)
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if len(l) != 2
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echoerr 'Found ' . len(l) . ' items in line ' . lnum . ', expected 2'
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return
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endif
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call add(s:widthprops, l)
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endif
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let lnum += 1
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endwhile
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endfunc
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" Build the toLower or toUpper table in a new buffer.
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" Uses s:dataprops.
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func! BuildCaseTable(name, index)
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let start = -1
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let end = -1
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let step = 0
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let add = -1
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let ranges = []
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for p in s:dataprops
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if p[a:index] != ''
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let n = ('0x' . p[0]) + 0
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let nl = ('0x' . p[a:index]) + 0
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if start >= 0 && add == nl - n && (step == 0 || n - end == step)
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" continue with same range.
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let step = n - end
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let end = n
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else
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if start >= 0
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" produce previous range
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call Range(ranges, start, end, step, add)
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endif
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let start = n
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let end = n
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let step = 0
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let add = nl - n
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endif
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endif
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endfor
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if start >= 0
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call Range(ranges, start, end, step, add)
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endif
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" New buffer to put the result in.
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new
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exe "file to" . a:name
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call setline(1, "static convertStruct to" . a:name . "[] =")
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call setline(2, "{")
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call append('$', ranges)
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call setline('$', getline('$')[:-2]) " remove last comma
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call setline(line('$') + 1, "};")
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wincmd p
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endfunc
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" Build the foldCase table in a new buffer.
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" Uses s:foldprops.
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func! BuildFoldTable()
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let start = -1
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let end = -1
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let step = 0
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let add = -1
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let ranges = []
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for p in s:foldprops
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if p[1] == 'C' || p[1] == 'S'
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let n = ('0x' . p[0]) + 0
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let nl = ('0x' . p[2]) + 0
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if start >= 0 && add == nl - n && (step == 0 || n - end == step)
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" continue with same range.
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let step = n - end
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let end = n
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else
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if start >= 0
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" produce previous range
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call Range(ranges, start, end, step, add)
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endif
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let start = n
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let end = n
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let step = 0
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let add = nl - n
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endif
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endif
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endfor
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if start >= 0
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call Range(ranges, start, end, step, add)
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endif
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" New buffer to put the result in.
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new
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file foldCase
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call setline(1, "static convertStruct foldCase[] =")
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call setline(2, "{")
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call append('$', ranges)
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call setline('$', getline('$')[:-2]) " remove last comma
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call setline(line('$') + 1, "};")
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wincmd p
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endfunc
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func! Range(ranges, start, end, step, add)
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let s = printf("\t{0x%x,0x%x,%d,%d},", a:start, a:end, a:step == 0 ? -1 : a:step, a:add)
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call add(a:ranges, s)
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endfunc
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" Build the combining table.
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" Uses s:dataprops.
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func! BuildCombiningTable()
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let start = -1
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let end = -1
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let ranges = []
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for p in s:dataprops
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if p[2] == 'Mn' || p[2] == 'Mc' || p[2] == 'Me'
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let n = ('0x' . p[0]) + 0
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if start >= 0 && end + 1 == n
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" continue with same range.
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let end = n
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else
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if start >= 0
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" produce previous range
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call add(ranges, printf("\t{0x%04x, 0x%04x},", start, end))
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endif
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let start = n
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let end = n
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endif
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endif
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endfor
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if start >= 0
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call add(ranges, printf("\t{0x%04x, 0x%04x},", start, end))
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endif
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" New buffer to put the result in.
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new
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file combining
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call setline(1, " static struct interval combining[] =")
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call setline(2, " {")
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call append('$', ranges)
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call setline('$', getline('$')[:-2]) " remove last comma
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call setline(line('$') + 1, " };")
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wincmd p
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endfunc
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" Build the double width or ambiguous width table in a new buffer.
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" Uses s:widthprops and s:dataprops.
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func! BuildWidthTable(pattern, tableName)
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let start = -1
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let end = -1
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let ranges = []
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let dataidx = 0
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for p in s:widthprops
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if p[1][0] =~ a:pattern
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if p[0] =~ '\.\.'
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" It is a range. we don't check for composing char then.
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let rng = split(p[0], '\.\.')
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if len(rng) != 2
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echoerr "Cannot parse range: '" . p[0] . "' in width table"
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endif
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let n = ('0x' . rng[0]) + 0
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let n_last = ('0x' . rng[1]) + 0
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else
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let n = ('0x' . p[0]) + 0
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let n_last = n
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endif
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" Find this char in the data table.
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while 1
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let dn = ('0x' . s:dataprops[dataidx][0]) + 0
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if dn >= n
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break
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endif
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let dataidx += 1
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endwhile
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if dn != n && n_last == n
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echoerr "Cannot find character " . n . " in data table"
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endif
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" Only use the char when it's not a composing char.
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" But use all chars from a range.
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let dp = s:dataprops[dataidx]
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if n_last > n || (dp[2] != 'Mn' && dp[2] != 'Mc' && dp[2] != 'Me')
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if start >= 0 && end + 1 == n
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" continue with same range.
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else
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if start >= 0
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" produce previous range
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call add(ranges, printf("\t{0x%04x, 0x%04x},", start, end))
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endif
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let start = n
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endif
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let end = n_last
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endif
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endif
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endfor
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if start >= 0
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call add(ranges, printf("\t{0x%04x, 0x%04x},", start, end))
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endif
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" New buffer to put the result in.
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new
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exe "file " . a:tableName
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call setline(1, " static struct interval " . a:tableName . "[] =")
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call setline(2, " {")
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call append('$', ranges)
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call setline('$', getline('$')[:-2]) " remove last comma
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call setline(line('$') + 1, " };")
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wincmd p
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endfunc
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" Edit the Unicode text file. Requires the netrw plugin.
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edit http://unicode.org/Public/UNIDATA/UnicodeData.txt
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" Parse each line, create a list of lists.
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call ParseDataToProps()
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" Build the toLower table.
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call BuildCaseTable("Lower", 13)
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" Build the toUpper table.
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call BuildCaseTable("Upper", 12)
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" Build the ranges of composing chars.
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call BuildCombiningTable()
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" Edit the case folding text file. Requires the netrw plugin.
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edit http://www.unicode.org/Public/UNIDATA/CaseFolding.txt
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" Parse each line, create a list of lists.
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call ParseFoldProps()
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" Build the foldCase table.
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call BuildFoldTable()
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" Edit the width text file. Requires the netrw plugin.
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edit http://www.unicode.org/Public/UNIDATA/EastAsianWidth.txt
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" Parse each line, create a list of lists.
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call ParseWidthProps()
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" Build the double width table.
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call BuildWidthTable('[WF]', 'doublewidth')
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" Build the ambiguous width table.
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call BuildWidthTable('A', 'ambiguous')
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