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local global_options = {
check_same = true,
}
local func_formatter = function(func, options)
local apply = function(win, range, pos)
local size = win.file.size
local all = { start = 0, finish = size }
if range == nil then
range = all
end
local check_same = (options and options.check_same ~= nil)
and options.check_same
or global_options.check_same
local check = check_same == true
or (type(check_same) == 'number' and check_same >= size)
out, err = func(win, range, pos)
if err ~= nil then
if err:match('\n') then
vis:message(err)
else
vis:info(err)
end
return
elseif out == nil or out == '' then
vis:info('No output from formatter')
elseif not check or win.file:content(all) ~= out then
local start, finish = range.start, range.finish
win.file:delete(range)
win.file:insert(start, out:sub(start + 1, finish + (out:len() - size)))
end
return pos
end
return {
apply = apply,
options = options,
}
end
local stdio_formatter = function(cmd, options)
return func_formatter(function(win, range, pos)
local command = type(cmd) == 'function' and cmd(win, range, pos) or cmd
local status, out, err = vis:pipe(win.file, range, command)
if status ~= 0 then
return nil, err
end
return out, nil
end, options or { ranged = type(cmd) == 'function' })
end
local with_filename = function(win, option)
if win.file.path then
return option .. "'" .. win.file.path:gsub("'", "\\'") .. "'"
else
return ''
end
end
local formatters = {}
formatters = {
bash = stdio_formatter(function(win)
return 'shfmt ' .. with_filename(win, '--filename ') .. ' -'
end),
csharp = stdio_formatter('dotnet csharpier'),
diff = {
pick = function(win)
for _, pattern in ipairs(vis.ftdetect.filetypes['git-commit'].ext) do
if ((win.file.name or ''):match('[^/]+$') or ''):match(pattern) then
return formatters['git-commit']
end
end
end,
},
['git-commit'] = func_formatter(function(win, range, pos)
local width = (win.options and win.options.colorcolumn ~= 0)
and (win.options.colorcolumn - 1)
or 72
local parts = {}
local fmt = nil
local summary = true
for line in win.file:lines_iterator() do
local txt = not line:match('^#')
if fmt == nil or fmt ~= txt then
fmt = txt and not summary
local prev = parts[#parts] and parts[#parts].finish or 0
parts[#parts + 1] = {
fmt = fmt,
start = prev,
finish = prev + #line + 1,
}
summary = summary and not txt
else
parts[#parts].finish = parts[#parts].finish + #line + 1
end
end
local out = ''
for _, part in ipairs(parts) do
if part.fmt then
local status, partout, err =
vis:pipe(win.file, part, 'fmt -w ' .. width)
if status ~= 0 then
return nil, err
end
out = out .. (partout or '')
else
out = out .. win.file:content(part)
end
end
return out
end, { ranged = false }),
go = stdio_formatter('gofmt'),
lua = {
pick = function(win)
local fz = io.popen([[
test -e .lua-format && echo luaformatter || echo stylua
]])
if fz then
local out = fz:read('*a')
local _, _, status = fz:close()
if status == 0 then
return formatters[out:gsub('\n$', '')]
end
end
end,
},
luaformatter = stdio_formatter('lua-format'),
markdown = stdio_formatter(function(win)
if win.options and win.options.colorcolumn ~= 0 then
return 'prettier --parser markdown --prose-wrap always '
.. ('--print-width ' .. (win.options.colorcolumn - 1) .. ' ')
.. with_filename(win, '--stdin-filepath ')
else
return 'prettier --parser markdown '
.. with_filename(win, '--stdin-filepath ')
end
end, { ranged = false }),
powershell = stdio_formatter([[
"$( (command -v powershell.exe || command -v pwsh) 2>/dev/null )" -c '
Invoke-Formatter -ScriptDefinition `
([IO.StreamReader]::new([Console]::OpenStandardInput()).ReadToEnd())
' | sed -e :a -e '/^[\r\n]*$/{$d;N;};/\n$/ba'
]]),
rust = stdio_formatter('rustfmt'),
stylua = stdio_formatter(function(win, range)
if range and (range.start ~= 0 or range.finish ~= win.file.size) then
return 'stylua -s --range-start '
.. range.start
.. ' --range-end '
.. range.finish
.. with_filename(win, ' --stdin-filepath ')
.. ' -'
else
return 'stylua -s ' .. with_filename(win, '--stdin-filepath ') .. ' -'
end
end),
text = stdio_formatter(function(win)
if win.options and win.options.colorcolumn ~= 0 then
return 'fmt -w ' .. (win.options.colorcolumn - 1)
else
return "fmt | awk -v n=-1 '"
.. ' {'
.. ' if ($0 == "") {'
.. ' n = n <= 0 ? 2 : 1'
.. ' } else {'
.. ' if (n == 0) sub(/^ */, "");'
.. ' n = 0;'
.. ' }'
.. ' printf("%s", $0 (n == 0 ? " " : ""));'
.. ' for(i = 0; i < n; i++)'
.. ' printf("\\n");'
.. ' }'
.. "'"
end
end, { ranged = false }),
}
local getwinforfile = function(file)
for win in vis:windows() do
if win and win.file and win.file.path == file.path then
return win
end
end
end
local apply = function(file_or_keys, range, pos)
local win = type(file_or_keys) ~= 'string' and getwinforfile(file_or_keys)
or vis.win
local ret = type(file_or_keys) ~= 'string'
and function()
return pos
end
or function()
return 0
end
pos = pos or win.selection.pos
local formatter = formatters[win.syntax]
if formatter and formatter.pick then
formatter = formatter.pick(win)
end
if formatter == nil then
vis:info('No formatter for ' .. win.syntax)
return ret()
end
if
range ~= nil
and not formatter.options.ranged
and range.start ~= 0
and range.finish ~= win.file.size
then
vis:info('Formatter for ' .. win.syntax .. ' does not support ranges')
return ret()
end
pos = formatter.apply(win, range, pos) or pos
vis:insert('') -- redraw and friends don't work
return ret()
end
return {
formatters = formatters,
options = globalOptions,
apply = apply,
stdio_formatter = stdio_formatter,
with_filename = with_filename,
}
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