← Back
Editing: json.vim
" 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:
Save File
Cancel