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150 lines
4.9 KiB
VimL
150 lines
4.9 KiB
VimL
function! SpaceVim#api#iconv#codecs#utf8#import() abort
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return s:utf8
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endfunction
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let s:base = SpaceVim#api#iconv#codecs#base#import()
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let s:utf8 = {}
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let s:utf8.Codec = {}
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call extend(s:utf8.Codec, s:base.Codec)
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let s:utf8.Codec.encoding = "UTF-8"
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function s:utf8.Codec.CheckByte(c)
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return (a:c >= 0x80) && ((a:c - 0x80) < 0x40)
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endfunction
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function! s:utf8.Codec.mbtowc(input, start)
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let c = a:input[a:start]
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if c < 0x80
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return [[c], a:start + 1]
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elseif c < 0xc2
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return self.error('UnicodeDecodeError', 'invalid', a:input, a:start, a:start)
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elseif c < 0xe0
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if a:start + 1 >= len(a:input)
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return self.error('UnicodeDecodeError', 'incomplete', a:input, a:start, len(a:input) - 1)
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endif
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if !(self.CheckByte(a:input[a:start + 1]))
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return self.error('UnicodeDecodeError', 'invalid', a:input, a:start, a:start + 1)
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endif
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let wc = ((c % 0x20) * 0x40) + (a:input[a:start + 1] - 0x80)
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return [[wc], a:start + 2]
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elseif c < 0xf0
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if a:start + 2 >= len(a:input)
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return self.error('UnicodeDecodeError', 'incomplete', a:input, a:start, len(a:input) - 1)
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endif
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if !(self.CheckByte(a:input[a:start + 1])
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\ && self.CheckByte(a:input[a:start + 2])
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\ && (c >= 0xe1 || a:input[a:start + 1] >= 0xa0))
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return self.error('UnicodeDecodeError', 'invalid', a:input, a:start, a:start + 2)
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endif
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let wc = ((c % 0x10) * 0x1000)
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\ + ((a:input[a:start + 1] - 0x80) * 0x40)
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\ + (a:input[a:start + 2] - 0x80)
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return [[wc], a:start + 3]
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elseif c < 0xf8
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if a:start + 3 >= len(a:input)
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return self.error('UnicodeDecodeError', 'incomplete', a:input, a:start, len(a:input) - 1)
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endif
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if !(self.CheckByte(a:input[a:start + 1])
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\ && self.CheckByte(a:input[a:start + 2])
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\ && self.CheckByte(a:input[a:start + 3])
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\ && (c >= 0xf1 || a:input[a:start + 1] >= 0x90))
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return self.error('UnicodeDecodeError', 'invalid', a:input, a:start, a:start + 3)
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endif
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let wc = ((c % 0x08) * 0x40000)
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\ + ((a:input[a:start + 1] - 0x80) * 0x1000)
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\ + ((a:input[a:start + 2] - 0x80) * 0x40)
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\ + (a:input[a:start + 3] - 0x80)
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return [[wc], a:start + 4]
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elseif c < 0xfc
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if a:start + 4 >= len(a:input)
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return self.error('UnicodeDecodeError', 'incomplete', a:input, a:start, len(a:input) - 1)
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endif
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if !(self.CheckByte(a:input[a:start + 1])
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\ && self.CheckByte(a:input[a:start + 2])
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\ && self.CheckByte(a:input[a:start + 3])
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\ && self.CheckByte(a:input[a:start + 4])
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\ && (c >= 0xf9 || a:input[a:start + 1] >= 0x88))
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return self.error('UnicodeDecodeError', 'invalid', a:input, a:start, a:start + 4)
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endif
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let wc = ((c % 0x04) * 0x1000000)
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\ + ((a:input[a:start + 1] - 0x80) * 0x40000)
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\ + ((a:input[a:start + 2] - 0x80) * 0x1000)
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\ + ((a:input[a:start + 3] - 0x80) * 0x40)
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\ + (a:input[a:start + 4] - 0x80)
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return [[wc], a:start + 5]
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elseif c < 0xfe
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if a:start + 5 >= len(a:input)
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return self.error('UnicodeDecodeError', 'incomplete', a:input, a:start, len(a:input) - 1)
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endif
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if !(self.CheckByte(a:input[a:start + 1])
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\ && self.CheckByte(a:input[a:start + 2])
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\ && self.CheckByte(a:input[a:start + 3])
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\ && self.CheckByte(a:input[a:start + 4])
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\ && self.CheckByte(a:input[a:start + 5])
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\ && (c >= 0xfd || a:input[a:start + 1] >= 0x84))
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return self.error('UnicodeDecodeError', 'invalid', a:input, a:start, a:start + 5)
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endif
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let wc = ((c % 0x02) * 0x40000000)
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\ + ((a:input[a:start + 1] - 0x80) * 0x1000000)
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\ + ((a:input[a:start + 2] - 0x80) * 0x40000)
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\ + ((a:input[a:start + 3] - 0x80) * 0x1000)
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\ + ((a:input[a:start + 4] - 0x80) * 0x40)
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\ + (a:input[a:start + 5] - 0x80)
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return [[wc], a:start + 6]
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else
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return self.error('UnicodeDecodeError', 'invalid', a:input, a:start, a:start)
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endif
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endfunction
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function! s:utf8.Codec.wctomb(input, start)
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let wc = a:input[a:start]
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let cnt = 0
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if wc < 0x80
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let cnt = 1
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elseif wc < 0x800
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let cnt = 2
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elseif wc < 0x10000
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let cnt = 3
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elseif wc < 0x200000
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let cnt = 4
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elseif wc < 0x4000000
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let cnt = 5
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elseif wc <= 0x7fffffff
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let cnt = 6
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else
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return self.error('UnicodeEncodeError', 'invalid', a:input, a:start, a:start)
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endif
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let r = []
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if cnt >= 6
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call insert(r, 0x80 + (wc % 0x40))
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let wc = (wc / 0x40) + 0x4000000
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endif
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if cnt >= 5
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call insert(r, 0x80 + (wc % 0x40))
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let wc = (wc / 0x40) + 0x200000
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endif
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if cnt >= 4
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call insert(r, 0x80 + (wc % 0x40))
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let wc = (wc / 0x40) + 0x10000
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endif
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if cnt >= 3
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call insert(r, 0x80 + (wc % 0x40))
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let wc = (wc / 0x40) + 0x800
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endif
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if cnt >= 2
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call insert(r, 0x80 + (wc % 0x40))
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let wc = (wc / 0x40) + 0xc0
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endif
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if cnt >= 1
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call insert(r, wc)
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endif
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return [r, a:start + 1]
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endfunction
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