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local do_not_run = true
if do_not_run then
print([[
This script was used to bootstrap the filetype patterns in runtime/lua/vim/filetype.lua. It
should no longer be used except for testing purposes. New filetypes, or changes to existing
filetypes, should be ported manually as part of the vim-patch process.
]])
return
end
local filetype_vim = 'runtime/filetype.vim'
local filetype_lua = 'runtime/lua/vim/filetype.lua'
local keywords = {
['for'] = true,
['or'] = true,
['and'] = true,
['end'] = true,
['do'] = true,
['if'] = true,
['while'] = true,
['repeat'] = true,
}
local sections = {
extension = { str = {}, func = {} },
filename = { str = {}, func = {} },
pattern = { str = {}, func = {} },
}
local specialchars = '%*%?\\%$%[%]%{%}'
local function add_pattern(pat, ft)
local ok = true
-- Patterns that start or end with { or } confuse splitting on commas and make parsing harder, so just skip those
if not string.find(pat, '^%{') and not string.find(pat, '%}$') then
for part in string.gmatch(pat, '[^,]+') do
if not string.find(part, '[' .. specialchars .. ']') then
if type(ft) == 'string' then
sections.filename.str[part] = ft
else
sections.filename.func[part] = ft
end
elseif string.match(part, '^%*%.[^%./' .. specialchars .. ']+$') then
if type(ft) == 'string' then
sections.extension.str[part:sub(3)] = ft
else
sections.extension.func[part:sub(3)] = ft
end
else
if string.match(part, '^%*/[^' .. specialchars .. ']+$') then
-- For patterns matching */some/pattern we want to easily match files
-- with path /some/pattern, so include those in filename detection
if type(ft) == 'string' then
sections.filename.str[part:sub(2)] = ft
else
sections.filename.func[part:sub(2)] = ft
end
end
if string.find(part, '^[%w-_.*?%[%]/]+$') then
local p = part:gsub('%.', '%%.'):gsub('%*', '.*'):gsub('%?', '.')
-- Insert into array to maintain order rather than setting
-- key-value directly
if type(ft) == 'string' then
sections.pattern.str[p] = ft
else
sections.pattern.func[p] = ft
end
else
ok = false
end
end
end
end
return ok
end
local function parse_line(line)
local pat, ft
pat, ft = line:match('^%s*au%a* Buf[%a,]+%s+(%S+)%s+setf%s+(%S+)')
if pat then
return add_pattern(pat, ft)
else
local func
pat, func = line:match('^%s*au%a* Buf[%a,]+%s+(%S+)%s+call%s+(%S+)')
if pat then
return add_pattern(pat, function()
return func
end)
end
end
end
local unparsed = {}
local full_line
for line in io.lines(filetype_vim) do
local cont = string.match(line, '^%s*\\%s*(.*)$')
if cont then
full_line = full_line .. ' ' .. cont
else
if full_line then
if not parse_line(full_line) and string.find(full_line, '^%s*au%a* Buf') then
table.insert(unparsed, full_line)
end
end
full_line = line
end
end
if #unparsed > 0 then
print('Failed to parse the following patterns:')
for _, v in ipairs(unparsed) do
print(v)
end
end
local function add_item(indent, key, ft)
if type(ft) == 'string' then
if string.find(key, '%A') or keywords[key] then
key = string.format('["%s"]', key)
end
return string.format([[%s%s = "%s",]], indent, key, ft)
elseif type(ft) == 'function' then
local func = ft()
if string.find(key, '%A') or keywords[key] then
key = string.format('["%s"]', key)
end
-- Right now only a single argument is supported, which covers
-- everything in filetype.vim as of this writing
local arg = string.match(func, '%((.*)%)$')
func = string.gsub(func, '%(.*$', '')
if arg == '' then
-- Function with no arguments, call the function directly
return string.format([[%s%s = function() vim.fn["%s"]() end,]], indent, key, func)
elseif string.match(arg, [[^(["']).*%1$]]) then
-- String argument
if func == 's:StarSetf' then
return string.format([[%s%s = starsetf(%s),]], indent, key, arg)
else
return string.format([[%s%s = function() vim.fn["%s"](%s) end,]], indent, key, func, arg)
end
elseif string.find(arg, '%(') then
-- Function argument
return string.format(
[[%s%s = function() vim.fn["%s"](vim.fn.%s) end,]],
indent,
key,
func,
arg
)
else
assert(false, arg)
end
end
end
do
local lines = {}
local start = false
for line in io.lines(filetype_lua) do
if line:match('^%s+-- END [A-Z]+$') then
start = false
end
if not start then
table.insert(lines, line)
end
local indent, section = line:match('^(%s+)-- BEGIN ([A-Z]+)$')
if section then
start = true
local t = sections[string.lower(section)]
local sorted = {}
for k, v in pairs(t.str) do
table.insert(sorted, { [k] = v })
end
table.sort(sorted, function(a, b)
return a[next(a)] < b[next(b)]
end)
for _, v in ipairs(sorted) do
local k = next(v)
table.insert(lines, add_item(indent, k, v[k]))
end
sorted = {}
for k, v in pairs(t.func) do
table.insert(sorted, { [k] = v })
end
table.sort(sorted, function(a, b)
return next(a) < next(b)
end)
for _, v in ipairs(sorted) do
local k = next(v)
table.insert(lines, add_item(indent, k, v[k]))
end
end
end
local f = io.open(filetype_lua, 'w')
f:write(table.concat(lines, '\n') .. '\n')
f:close()
end
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