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136 lines
3.7 KiB
VimL
136 lines
3.7 KiB
VimL
10 years ago
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" json
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" Last Change: 2012-03-08
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" Maintainer: Yasuhiro Matsumoto <mattn.jp@gmail.com>
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" License: This file is placed in the public domain.
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" Reference:
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"
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let s:save_cpo = &cpo
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set cpo&vim
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function! webapi#json#null()
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return 0
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endfunction
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function! webapi#json#true()
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return 1
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endfunction
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function! webapi#json#false()
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return 0
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endfunction
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function! s:nr2byte(nr)
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if a:nr < 0x80
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return nr2char(a:nr)
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elseif a:nr < 0x800
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return nr2char(a:nr/64+192).nr2char(a:nr%64+128)
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else
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return nr2char(a:nr/4096%16+224).nr2char(a:nr/64%64+128).nr2char(a:nr%64+128)
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endif
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endfunction
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function! s:nr2enc_char(charcode)
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if &encoding == 'utf-8'
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return nr2char(a:charcode)
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endif
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let char = s:nr2byte(a:charcode)
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if strlen(char) > 1
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let char = strtrans(iconv(char, 'utf-8', &encoding))
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endif
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return char
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endfunction
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function! s:fixup(val, tmp)
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if type(a:val) == 0
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return a:val
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elseif type(a:val) == 1
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if a:val == a:tmp.'null'
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return function('webapi#json#null')
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elseif a:val == a:tmp.'true'
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return function('webapi#json#true')
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elseif a:val == a:tmp.'false'
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return function('webapi#json#false')
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endif
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return a:val
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elseif type(a:val) == 2
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return a:val
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elseif type(a:val) == 3
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return map(a:val, 's:fixup(v:val, a:tmp)')
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elseif type(a:val) == 4
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return map(a:val, 's:fixup(v:val, a:tmp)')
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else
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return string(a:val)
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endif
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endfunction
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function! webapi#json#decode(json)
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let json = iconv(a:json, "utf-8", &encoding)
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if get(g:, 'webapi#json#parse_strict', 1) == 1 && substitute(substitute(substitute(
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\ json,
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\ '\\\%(["\\/bfnrt]\|u[0-9a-fA-F]\{4}\)', '\@', 'g'),
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\ '"[^\"\\\n\r]*\"\|true\|false\|null\|-\?\d\+'
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\ . '\%(\.\d*\)\?\%([eE][+\-]\{-}\d\+\)\?', ']', 'g'),
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\ '\%(^\|:\|,\)\%(\s*\[\)\+', '', 'g') !~ '^[\],:{} \t\n]*$'
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throw json
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endif
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let json = substitute(json, '\n', '', 'g')
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let json = substitute(json, '\\u34;', '\\"', 'g')
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if v:version >= 703 && has('patch780')
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let json = substitute(json, '\\u\(\x\x\x\x\)', '\=iconv(nr2char(str2nr(submatch(1), 16), 1), "utf-8", &encoding)', 'g')
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else
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let json = substitute(json, '\\u\(\x\x\x\x\)', '\=s:nr2enc_char("0x".submatch(1))', 'g')
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endif
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if get(g:, 'webapi#json#allow_nil', 0) != 0
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let tmp = '__WEBAPI_JSON__'
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while 1
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if stridx(json, tmp) == -1
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break
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endif
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let tmp .= '_'
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endwhile
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let [null,true,false] = [
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\ tmp.'null',
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\ tmp.'true',
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\ tmp.'false']
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sandbox let ret = eval(json)
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call s:fixup(ret, tmp)
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else
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let [null,true,false] = [0,1,0]
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sandbox let ret = eval(json)
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endif
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return ret
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endfunction
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function! webapi#json#encode(val)
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if type(a:val) == 0
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return a:val
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elseif type(a:val) == 1
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let json = '"' . escape(a:val, '\"') . '"'
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let json = substitute(json, "\r", '\\r', 'g')
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let json = substitute(json, "\n", '\\n', 'g')
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let json = substitute(json, "\t", '\\t', 'g')
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let json = substitute(json, '\([[:cntrl:]]\)', '\=printf("\x%02d", char2nr(submatch(1)))', 'g')
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return iconv(json, &encoding, "utf-8")
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elseif type(a:val) == 2
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let s = string(a:val)
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if s == "function('webapi#json#null')"
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return 'null'
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elseif s == "function('webapi#json#true')"
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return 'true'
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elseif s == "function('webapi#json#false')"
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return 'false'
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endif
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elseif type(a:val) == 3
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return '[' . join(map(copy(a:val), 'webapi#json#encode(v:val)'), ',') . ']'
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elseif type(a:val) == 4
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return '{' . join(map(keys(a:val), 'webapi#json#encode(v:val).":".webapi#json#encode(a:val[v:val])'), ',') . '}'
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else
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return string(a:val)
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endif
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endfunction
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let &cpo = s:save_cpo
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unlet s:save_cpo
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" vim:set et:
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