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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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