/usr/share/vim/vim80/indent/json.vim is in vim-runtime 2:8.0.1453-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | " Vim indent file
" Language: JSON
" Mantainer: Eli Parra <eli@elzr.com> https://github.com/elzr/vim-json
" Last Change: 2017 Jun 13
" https://github.com/jakar/vim-json/commit/20b650e22aa750c4ab6a66aa646bdd95d7cd548a#diff-e81fc111b2052e306d126bd9989f7b7c
" Original Author: Rogerz Zhang <rogerz.zhang at gmail.com> http://github.com/rogerz/vim-json
" Acknowledgement: Based off of vim-javascript maintained by Darrick Wiebe
" http://www.vim.org/scripts/script.php?script_id=2765
" 0. Initialization {{{1
" =================
" Only load this indent file when no other was loaded.
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
setlocal nosmartindent
" Now, set up our indentation expression and keys that trigger it.
setlocal indentexpr=GetJSONIndent()
setlocal indentkeys=0{,0},0),0[,0],!^F,o,O,e
" Only define the function once.
if exists("*GetJSONIndent")
finish
endif
let s:cpo_save = &cpo
set cpo&vim
" 1. Variables {{{1
" ============
let s:line_term = '\s*\%(\%(\/\/\).*\)\=$'
" Regex that defines blocks.
let s:block_regex = '\%({\)\s*\%(|\%([*@]\=\h\w*,\=\s*\)\%(,\s*[*@]\=\h\w*\)*|\)\=' . s:line_term
" 2. Auxiliary Functions {{{1
" ======================
" Check if the character at lnum:col is inside a string.
function s:IsInString(lnum, col)
return synIDattr(synID(a:lnum, a:col, 1), 'name') == 'jsonString'
endfunction
" Find line above 'lnum' that isn't empty, or in a string.
function s:PrevNonBlankNonString(lnum)
let lnum = prevnonblank(a:lnum)
while lnum > 0
" If the line isn't empty or in a string, end search.
let line = getline(lnum)
if !(s:IsInString(lnum, 1) && s:IsInString(lnum, strlen(line)))
break
endif
let lnum = prevnonblank(lnum - 1)
endwhile
return lnum
endfunction
" Check if line 'lnum' has more opening brackets than closing ones.
function s:LineHasOpeningBrackets(lnum)
let open_0 = 0
let open_2 = 0
let open_4 = 0
let line = getline(a:lnum)
let pos = match(line, '[][(){}]', 0)
while pos != -1
let idx = stridx('(){}[]', line[pos])
if idx % 2 == 0
let open_{idx} = open_{idx} + 1
else
let open_{idx - 1} = open_{idx - 1} - 1
endif
let pos = match(line, '[][(){}]', pos + 1)
endwhile
return (open_0 > 0) . (open_2 > 0) . (open_4 > 0)
endfunction
function s:Match(lnum, regex)
let col = match(getline(a:lnum), a:regex) + 1
return col > 0 && !s:IsInString(a:lnum, col) ? col : 0
endfunction
" 3. GetJSONIndent Function {{{1
" =========================
function GetJSONIndent()
" 3.1. Setup {{{2
" ----------
" Set up variables for restoring position in file. Could use v:lnum here.
let vcol = col('.')
" 3.2. Work on the current line {{{2
" -----------------------------
" Get the current line.
let line = getline(v:lnum)
let ind = -1
" If we got a closing bracket on an empty line, find its match and indent
" according to it.
let col = matchend(line, '^\s*[]}]')
if col > 0 && !s:IsInString(v:lnum, col)
call cursor(v:lnum, col)
let bs = strpart('{}[]', stridx('}]', line[col - 1]) * 2, 2)
let pairstart = escape(bs[0], '[')
let pairend = escape(bs[1], ']')
let pairline = searchpair(pairstart, '', pairend, 'bW')
if pairline > 0
let ind = indent(pairline)
else
let ind = virtcol('.') - 1
endif
return ind
endif
" If we are in a multi-line string, don't do anything to it.
if s:IsInString(v:lnum, matchend(line, '^\s*') + 1)
return indent('.')
endif
" 3.3. Work on the previous line. {{{2
" -------------------------------
let lnum = prevnonblank(v:lnum - 1)
if lnum == 0
return 0
endif
" Set up variables for current line.
let line = getline(lnum)
let ind = indent(lnum)
" If the previous line ended with a block opening, add a level of indent.
" if s:Match(lnum, s:block_regex)
" return indent(lnum) + shiftwidth()
" endif
" If the previous line contained an opening bracket, and we are still in it,
" add indent depending on the bracket type.
if line =~ '[[({]'
let counts = s:LineHasOpeningBrackets(lnum)
if counts[0] == '1' || counts[1] == '1' || counts[2] == '1'
return ind + shiftwidth()
else
call cursor(v:lnum, vcol)
end
endif
" }}}2
return ind
endfunction
" }}}1
let &cpo = s:cpo_save
unlet s:cpo_save
" vim:set sw=2 sts=2 ts=8 noet:
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