function! gitgutter#utility#supports_overscore_sign() if gitgutter#utility#windows() return &encoding ==? 'utf-8' else return &termencoding ==? &encoding || &termencoding == '' endif endfunction " True for git v1.7.2+. function! gitgutter#utility#git_supports_command_line_config_override() abort if !exists('s:c_flag') let [_, error_code] = gitgutter#utility#system(gitgutter#git().' -c foo.bar=baz --version') let s:c_flag = !error_code endif return s:c_flag endfunction function! gitgutter#utility#setbufvar(buffer, varname, val) let buffer = +a:buffer " Default value for getbufvar() was introduced in Vim 7.3.831. let ggvars = getbufvar(buffer, 'gitgutter') if type(ggvars) == type('') unlet ggvars let ggvars = {} call setbufvar(buffer, 'gitgutter', ggvars) endif let ggvars[a:varname] = a:val endfunction function! gitgutter#utility#getbufvar(buffer, varname, ...) let buffer = +a:buffer let ggvars = getbufvar(buffer, 'gitgutter') if type(ggvars) == type({}) && has_key(ggvars, a:varname) return ggvars[a:varname] endif if a:0 return a:1 endif endfunction function! gitgutter#utility#warn(message) abort echohl WarningMsg echo a:message echohl None let v:warningmsg = a:message endfunction function! gitgutter#utility#warn_once(bufnr, message, key) abort if empty(gitgutter#utility#getbufvar(a:bufnr, a:key)) call gitgutter#utility#setbufvar(a:bufnr, a:key, '1') echohl WarningMsg redraw | echom a:message echohl None let v:warningmsg = a:message endif endfunction " Returns truthy when the buffer's file should be processed; and falsey when it shouldn't. " This function does not and should not make any system calls. function! gitgutter#utility#is_active(bufnr) abort return gitgutter#utility#getbufvar(a:bufnr, 'enabled') && \ !pumvisible() && \ s:is_file_buffer(a:bufnr) && \ s:exists_file(a:bufnr) && \ s:not_git_dir(a:bufnr) endfunction function! s:not_git_dir(bufnr) abort return gitgutter#utility#dir(a:bufnr) !~ '[/\\]\.git\($\|[/\\]\)' endfunction function! s:is_file_buffer(bufnr) abort return empty(getbufvar(a:bufnr, '&buftype')) endfunction " From tpope/vim-fugitive function! s:winshell() return &shell =~? 'cmd' || exists('+shellslash') && !&shellslash endfunction " From tpope/vim-fugitive function! gitgutter#utility#shellescape(arg) abort if a:arg =~ '^[A-Za-z0-9_/.-]\+$' return a:arg elseif s:winshell() return '"' . substitute(substitute(a:arg, '"', '""', 'g'), '%', '"%"', 'g') . '"' else return shellescape(a:arg) endif endfunction function! gitgutter#utility#file(bufnr) return s:abs_path(a:bufnr, 1) endfunction " Not shellescaped function! gitgutter#utility#extension(bufnr) abort return fnamemodify(s:abs_path(a:bufnr, 0), ':e') endfunction function! gitgutter#utility#system(cmd, ...) abort call gitgutter#debug#log(a:cmd, a:000) call s:use_known_shell() let prev_error_code = v:shell_error silent let output = (a:0 == 0) ? system(a:cmd) : system(a:cmd, a:1) let error_code = v:shell_error silent call system('exit ' . prev_error_code) call s:restore_shell() return [output, error_code] endfunction function! gitgutter#utility#has_repo_path(bufnr) return index(['', -1, -2], gitgutter#utility#repo_path(a:bufnr, 0)) == -1 endfunction " Path of file relative to repo root. " " * empty string - not set " * non-empty string - path " * -1 - pending " * -2 - not tracked by git " * -3 - assume unchanged function! gitgutter#utility#repo_path(bufnr, shellesc) abort let p = gitgutter#utility#getbufvar(a:bufnr, 'path', '') return a:shellesc ? gitgutter#utility#shellescape(p) : p endfunction let s:set_path_handler = {} function! s:set_path_handler.out(buffer, listing) abort let listing = s:strip_trailing_new_line(a:listing) let [status, path] = [listing[0], listing[2:]] if status =~# '[a-z]' call gitgutter#utility#setbufvar(a:buffer, 'path', -3) else call gitgutter#utility#setbufvar(a:buffer, 'path', path) endif if type(self.continuation) == type(function('tr')) call self.continuation() else call call(self.continuation.function, self.continuation.arguments) endif endfunction function! s:set_path_handler.err(buffer) abort call gitgutter#utility#setbufvar(a:buffer, 'path', -2) endfunction " continuation - a funcref or hash to call after setting the repo path asynchronously. " " Returns 'async' if the the path is set asynchronously, 0 otherwise. function! gitgutter#utility#set_repo_path(bufnr, continuation) abort " Values of path: " * non-empty string - path " * -1 - pending " * -2 - not tracked by git " * -3 - assume unchanged call gitgutter#utility#setbufvar(a:bufnr, 'path', -1) let cmd = gitgutter#git(a:bufnr).' ls-files -v --error-unmatch --full-name -z -- '. \ gitgutter#utility#shellescape(gitgutter#utility#filename(a:bufnr)) if g:gitgutter_async && gitgutter#async#available() && !has('vim_starting') let handler = copy(s:set_path_handler) let handler.continuation = a:continuation call gitgutter#async#execute(cmd, a:bufnr, handler) return 'async' endif let [listing, error_code] = gitgutter#utility#system(cmd) if error_code call gitgutter#utility#setbufvar(a:bufnr, 'path', -2) return endif let listing = s:strip_trailing_new_line(listing) let [status, path] = [listing[0], listing[2:]] if status =~# '[a-z]' call gitgutter#utility#setbufvar(a:bufnr, 'path', -3) else call gitgutter#utility#setbufvar(a:bufnr, 'path', path) endif endfunction function! gitgutter#utility#clean_smudge_filter_applies(bufnr) let filtered = gitgutter#utility#getbufvar(a:bufnr, 'filter', -1) if filtered == -1 let cmd = gitgutter#git(a:bufnr).' check-attr filter -- '. \ gitgutter#utility#shellescape(gitgutter#utility#filename(a:bufnr)) let [out, _] = gitgutter#utility#system(cmd) let filtered = out !~ 'unspecified' call gitgutter#utility#setbufvar(a:bufnr, 'filter', filtered) endif return filtered endfunction function! s:use_known_shell() abort if has('unix') && &shell !=# 'sh' let [s:shell, s:shellcmdflag, s:shellredir, s:shellpipe, s:shellquote, s:shellxquote] = [&shell, &shellcmdflag, &shellredir, &shellpipe, &shellquote, &shellxquote] let &shell = 'sh' set shellcmdflag=-c shellredir=>%s\ 2>&1 endif if has('win32') && (&shell =~# 'pwsh' || &shell =~# 'powershell') let [s:shell, s:shellcmdflag, s:shellredir, s:shellpipe, s:shellquote, s:shellxquote] = [&shell, &shellcmdflag, &shellredir, &shellpipe, &shellquote, &shellxquote] let &shell = 'cmd.exe' set shellcmdflag=/s\ /c shellredir=>%s\ 2>&1 shellpipe=>%s\ 2>&1 shellquote= shellxquote=" endif endfunction function! s:restore_shell() abort if (has('unix') || has('win32')) && exists('s:shell') let [&shell, &shellcmdflag, &shellredir, &shellpipe, &shellquote, &shellxquote] = [s:shell, s:shellcmdflag, s:shellredir, s:shellpipe, s:shellquote, s:shellxquote] endif endfunction function! gitgutter#utility#get_diff_base(bufnr) let p = resolve(expand('#'.a:bufnr.':p')) let ml = matchlist(p, '\v^fugitive:/.*/(\x{40,})/') if !empty(ml) && !empty(ml[1]) return ml[1].'^' endif return g:gitgutter_diff_base endfunction " Returns the original path (shellescaped) at the buffer's diff base. function! gitgutter#utility#base_path(bufnr) let diffbase = gitgutter#utility#get_diff_base(a:bufnr) " If we already know the original path at this diff base, return it. let basepath = gitgutter#utility#getbufvar(a:bufnr, 'basepath', '') if !empty(basepath) " basepath is diffbase:path " Note that path can also contain colons. " List destructuring / unpacking where the remaining items are assigned " to a single variable (:help let-unpack) is only available in v8.2.0540. let parts = split(basepath, ':', 1) let base = parts[0] let bpath = join(parts[1:], ':') if base == diffbase return gitgutter#utility#shellescape(bpath) endif endif " Obtain buffers' paths. let current_paths = {} for bufnr in range(1, bufnr('$') + 1) if gitgutter#utility#has_repo_path(bufnr) let current_paths[gitgutter#utility#repo_path(bufnr, 0)] = bufnr endif endfor " Get a list of file renames at the buffer's diff base. " Store the original paths on any corresponding buffers. " If the buffer's file was one of them, return its original path. let op = '' let renames = s:obtain_file_renames(a:bufnr, diffbase) for [current, original] in items(renames) if has_key(current_paths, current) let bufnr = current_paths[current] let basepath = diffbase.':'.original call gitgutter#utility#setbufvar(bufnr, 'basepath', basepath) if bufnr == a:bufnr let op = original endif endif endfor if !empty(op) return gitgutter#utility#shellescape(op) endif " Buffer's file was not renamed, so store current path and return it. let current_path = gitgutter#utility#repo_path(a:bufnr, 0) let basepath = diffbase.':'.current_path call gitgutter#utility#setbufvar(a:bufnr, 'basepath', basepath) return gitgutter#utility#shellescape(current_path) endfunction " Returns a dict of current path to original path at the given base. function! s:obtain_file_renames(bufnr, base) let renames = {} let cmd = gitgutter#git(a:bufnr) if gitgutter#utility#git_supports_command_line_config_override() let cmd .= ' -c "core.safecrlf=false"' endif let cmd .= ' diff --diff-filter=R --name-status '.a:base let [out, error_code] = gitgutter#utility#system(cmd) if error_code " Assume the problem is the diff base. call gitgutter#utility#warn('g:gitgutter_diff_base ('.a:base.') is invalid') return {} endif for line in split(out, '\n') let fields = split(line) if len(fields) != 3 call gitgutter#utility#warn('gitgutter: unable to list renamed files: '.line) return {} endif let [original, current] = fields[1:] let renames[current] = original endfor return renames endfunction function! s:abs_path(bufnr, shellesc) let p = resolve(expand('#'.a:bufnr.':p')) " Remove extra parts from fugitive's filepaths let p = substitute(substitute(p, '^fugitive:', '', ''), '\v\.git/\x{40,}/', '', '') return a:shellesc ? gitgutter#utility#shellescape(p) : p endfunction " Shellescaped function! gitgutter#utility#dir(bufnr) abort return gitgutter#utility#shellescape(fnamemodify(s:abs_path(a:bufnr, 0), ':h')) endfunction " Not shellescaped. function! gitgutter#utility#filename(bufnr) abort return fnamemodify(s:abs_path(a:bufnr, 0), ':t') endfunction function! s:exists_file(bufnr) abort return filereadable(s:abs_path(a:bufnr, 0)) endfunction " Get rid of any trailing new line or SOH character. " " git ls-files -z produces output with null line termination. " Vim's system() replaces any null characters in the output " with SOH (start of header), i.e. ^A. function! s:strip_trailing_new_line(line) abort return substitute(a:line, '[[:cntrl:]]$', '', '') endfunction function! gitgutter#utility#windows() return has('win64') || has('win32') || has('win16') endfunction