local ldebug = require "luci.debug"
local string = require "string"
local coroutine = require "coroutine"
+local tparser = require "luci.template.parser"
local getmetatable, setmetatable = getmetatable, setmetatable
local rawget, rawset, unpack = rawget, rawset, unpack
local tostring, type, assert = tostring, type, assert
local ipairs, pairs, loadstring = ipairs, pairs, loadstring
local require, pcall, xpcall = require, pcall, xpcall
+local collectgarbage, get_memory_limit = collectgarbage, get_memory_limit
--- LuCI utility functions.
module "luci.util"
if not b then
return a
elseif type(b) == "table" then
+ for k, _ in pairs(b) do if type(b[k]) == "userdata" then b[k] = tostring(b[k]) end end
return a:format(unpack(b))
else
+ if type(b) == "userdata" then b = tostring(b) end
return a:format(b)
end
end
-- Scope manipulation routines
--
---- Create a new or get an already existing thread local store associated with
--- the current active coroutine. A thread local store is private a table object
--- whose values can't be accessed from outside of the running coroutine.
--- @return Table value representing the corresponding thread local store
-function threadlocal()
- local tbl = {}
-
- local function get(self, key)
- local c = coroutine.running()
- local thread = coxpt[c] or c or 0
- if not rawget(self, thread) then
- return nil
- end
- return rawget(self, thread)[key]
- end
+local tl_meta = {
+ __mode = "k",
+
+ __index = function(self, key)
+ local t = rawget(self, coxpt[coroutine.running()]
+ or coroutine.running() or 0)
+ return t and t[key]
+ end,
- local function set(self, key, value)
- local c = coroutine.running()
- local thread = coxpt[c] or c or 0
- if not rawget(self, thread) then
- rawset(self, thread, {})
+ __newindex = function(self, key, value)
+ local c = coxpt[coroutine.running()] or coroutine.running() or 0
+ if not rawget(self, c) then
+ rawset(self, c, { [key] = value })
+ else
+ rawget(self, c)[key] = value
end
- rawget(self, thread)[key] = value
end
+}
- setmetatable(tbl, {__index = get, __newindex = set, __mode = "k"})
-
- return tbl
+--- Create a new or get an already existing thread local store associated with
+-- the current active coroutine. A thread local store is private a table object
+-- whose values can't be accessed from outside of the running coroutine.
+-- @return Table value representing the corresponding thread local store
+function threadlocal(tbl)
+ return setmetatable(tbl or {}, tl_meta)
end
-- @param value String value containing the data to escape
-- @return String value containing the escaped data
function pcdata(value)
- return value and tostring(value):gsub("[&\"'<>]", {
- ["&"] = "&",
- ['"'] = """,
- ["'"] = "'",
- ["<"] = "<",
- [">"] = ">"
- })
+ return value and tparser.sanitize_pcdata(tostring(value))
end
--- Strip HTML tags from given string.
-- @param value String containing the HTML text
-- @return String with HTML tags stripped of
function striptags(s)
- return pcdata(s:gsub("</?[A-Za-z][A-Za-z0-9:_%-]*[^>]*>", " "):gsub("%s+", " "))
+ return pcdata(tostring(s):gsub("</?[A-Za-z][A-Za-z0-9:_%-]*[^>]*>", " "):gsub("%s+", " "))
end
--- Splits given string on a defined separator sequence and return a table
return (str:gsub("^%s*(.-)%s*$", "%1"))
end
+--- Count the occurences of given substring in given string.
+-- @param str String to search in
+-- @param pattern String containing pattern to find
+-- @return Number of found occurences
+function cmatch(str, pat)
+ local count = 0
+ for _ in str:gmatch(pat) do count = count + 1 end
+ return count
+end
+
+--- Return a matching iterator for the given value. The iterator will return
+-- one token per invocation, the tokens are separated by whitespace. If the
+-- input value is a table, it is transformed into a string first. A nil value
+-- will result in a valid interator which aborts with the first invocation.
+-- @param val The value to scan (table, string or nil)
+-- @return Iterator which returns one token per call
+function imatch(v)
+ if v == nil then
+ v = ""
+ elseif type(v) == "table" then
+ v = table.concat(v, " ")
+ elseif type(v) ~= "string" then
+ v = tostring(v)
+ end
+
+ return v:gmatch("%S+")
+end
+
--- Parse certain units from the given string and return the canonical integer
-- value or 0 if the unit is unknown. Upper- or lower case is irrelevant.
-- Recognized units are:
return val
end
---- Combines two or more numerically indexed tables and single objects into one table.
--- @param tbl1 Table value to combine
--- @param tbl2 Table value to combine
--- @param ... More tables to combine
--- @return Table value containing all values of given tables
-function combine(...)
- local result = {}
+-- also register functions above in the central string class for convenience
+string.escape = escape
+string.pcdata = pcdata
+string.striptags = striptags
+string.split = split
+string.trim = trim
+string.cmatch = cmatch
+string.parse_units = parse_units
+
+
+--- Appends numerically indexed tables or single objects to a given table.
+-- @param src Target table
+-- @param ... Objects to insert
+-- @return Target table
+function append(src, ...)
for i, a in ipairs({...}) do
if type(a) == "table" then
for j, v in ipairs(a) do
- result[#result+1] = v
+ src[#src+1] = v
end
else
- result[#result+1] = a
+ src[#src+1] = a
end
end
- return result
+ return src
+end
+
+--- Combines two or more numerically indexed tables and single objects into one table.
+-- @param tbl1 Table value to combine
+-- @param tbl2 Table value to combine
+-- @param ... More tables to combine
+-- @return Table value containing all values of given tables
+function combine(...)
+ return append({}, ...)
end
--- Checks whether the given table contains the given value.
code = string.dump( loadstring( "return " .. serialize_data(val) ) )
end
- return code and strip_bytecode(code)
+ return code -- and strip_bytecode(code)
end
--- Strips unnescessary lua bytecode from given string. Information like line
end
end
- local strip_function
- strip_function = function(code)
+ local function strip_function(code)
local count, offset = subint(code, 1, size)
- local stripped, dirty = string.rep("\0", size), offset + count
+ local stripped = { string.rep("\0", size) }
+ local dirty = offset + count
offset = offset + count + int * 2 + 4
offset = offset + int + subint(code, offset, int) * ins
count, offset = subint(code, offset, int)
end
end
count, offset = subint(code, offset, int)
- stripped = stripped .. code:sub(dirty, offset - 1)
+ stripped[#stripped+1] = code:sub(dirty, offset - 1)
for n = 1, count do
local proto, off = strip_function(code:sub(offset, -1))
- stripped, offset = stripped .. proto, offset + off - 1
+ stripped[#stripped+1] = proto
+ offset = offset + off - 1
end
offset = offset + subint(code, offset, int) * int + int
count, offset = subint(code, offset, int)
for n = 1, count do
offset = offset + subint(code, offset, size) + size
end
- stripped = stripped .. string.rep("\0", int * 3)
- return stripped, offset
+ stripped[#stripped+1] = string.rep("\0", int * 3)
+ return table.concat(stripped), offset
end
return code:sub(1,12) .. strip_function(code:sub(13,-1))
--- Returns the absolute path to LuCI base directory.
-- @return String containing the directory path
function libpath()
- return require "luci.fs".dirname(ldebug.__file__)
+ return require "nixio.fs".dirname(ldebug.__file__)
end
if not status then
return false, err(debug.traceback(co, (...)), ...)
end
- if coroutine.status(co) == 'suspended' then
- return performResume(err, co, coroutine.yield(...))
- else
+
+ if coroutine.status(co) ~= 'suspended' then
return true, ...
end
+
+ return performResume(err, co, coroutine.yield(...))
end
-- Resume execution of protected function call