local getmetatable, setmetatable = getmetatable, setmetatable
local rawget, rawset, unpack = rawget, rawset, unpack
-local tostring, type, assert = tostring, type, assert
+local tostring, type, assert = tostring, type, assert
local ipairs, pairs, loadstring = ipairs, pairs, loadstring
local require, pcall, xpcall = require, pcall, xpcall
function dumptable(t, maxdepth, i, seen)
i = i or 0
seen = seen or setmetatable({}, {__mode="k"})
-
+
for k,v in pairs(t) do
perror(string.rep("\t", i) .. tostring(k) .. "\t" .. tostring(v))
if type(v) == "table" and (not maxdepth or i < maxdepth) then
-- @return String value containing the escaped data
function pcdata(value)
return value and tostring(value):gsub("[&\"'<>]", {
- ["&"] = "&",
- ['"'] = """,
- ["'"] = "'",
- ["<"] = "<",
- [">"] = ">"
+ ["&"] = "&",
+ ['"'] = """,
+ ["'"] = "'",
+ ["<"] = "<",
+ [">"] = ">"
})
end
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
+
--- 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 into one.
+-- 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
+ src[#src+1] = v
+ end
+ else
+ src[#src+1] = a
+ end
+ end
+ 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(...)
- local result = {}
- for i, a in ipairs(arg) do
- for j, v in ipairs(a) do
- result[#result+1] = v
- end
- end
- return result
+ return append({}, ...)
end
--- Checks whether the given table contains the given value.
function _serialize_table(t, seen)
assert(not seen[t], "Recursion detected.")
seen[t] = true
-
+
local data = ""
local idata = ""
local ilen = 0
for i = 1, ilen do
local v = serialize_data(t[i], seen)
idata = idata .. ( #idata > 0 and ", " or "" ) .. v
- end
+ end
return idata .. ( #data > 0 and #idata > 0 and ", " or "" ) .. data
end
-- @see get_bytecode
function serialize_data(val, seen)
seen = seen or setmetatable({}, {__mode="k"})
-
+
if val == nil then
return "nil"
elseif type(val) == "number" then
return pp and function()
local line = pp:read()
-
+
if not line then
pp:close()
end
-
+
return line
end
end