X-Git-Url: https://git.archive.openwrt.org/?p=project%2Fluci.git;a=blobdiff_plain;f=libs%2Fcore%2Fluasrc%2Futil.lua;h=51d66e08e5a34b1a6e3423742ae636c637f79a0d;hp=3f65a80fba6452ad5ae827bad866c6cddb3c14eb;hb=2b0e8c6d7fc72c5c4d090dd3311c341f280e2237;hpb=714d72296147941029a72b63524ad199ae08c737

diff --git a/libs/core/luasrc/util.lua b/libs/core/luasrc/util.lua
index 3f65a80fb..51d66e08e 100644
--- a/libs/core/luasrc/util.lua
+++ b/libs/core/luasrc/util.lua
@@ -320,7 +320,7 @@ end
 --- Combines two or more numerically indexed tables into one.
 -- @param tbl1	Table value to combine
 -- @param tbl2	Table value to combine
--- @param tblN	More values to combine
+-- @param ...	More tables to combine
 -- @return		Table value containing all values of given tables
 function combine(...)
 	local result = {}
@@ -375,27 +375,27 @@ function clone(object, deep)
 	return copy
 end
 
--- Test whether the given table value is a numerically indexed table.
-function _is_numeric_table(t)
-	local k = pairs(t)(t)
-	return ( tonumber(k) ~= nil )
+
+--- Create a dynamic table which automatically creates subtables.
+-- @return	Dynamic Table
+function dtable()
+        return setmetatable({}, { __index =
+                function(tbl, key)
+                        return rawget(tbl, key)
+                         or rawget(rawset(tbl, key, dtable()), key)
+                end
+        })
 end
 
+
 -- Serialize the contents of a table value.
 function _serialize_table(t)
 	local data = ""
-	if _is_numeric_table(t) then
-		for i, v in ipairs(t) do
-			v = serialize_data(v)
-			data = data .. ( #data > 0 and ", " or "" ) .. v
-		end
-	else
-		for k, v in pairs(t) do
-			k = serialize_data(k)
-			v = serialize_data(v)
-			data = data .. ( #data > 0 and "; " or "" ) ..
-				'[' .. k .. '] = ' .. v
-		end
+	for k, v in pairs(t) do
+		k = serialize_data(k)
+		v = serialize_data(v)
+		data = data .. ( #data > 0 and ", " or "" ) ..
+			'[' .. k .. '] = ' .. v
 	end
 	return data
 end
@@ -410,13 +410,13 @@ function serialize_data(val)
 	if val == nil then
 		return "nil"
 	elseif type(val) == "number" then
-		return tostring(val)
+		return val
 	elseif type(val) == "string" then
-		val = val:gsub("\\", "\\\\")
-				 :gsub("\r", "\\r")
-				 :gsub("\n", "\\n")
-				 :gsub('"','\\"')
-		return '"' .. val .. '"'
+		return string.format("%q", val)
+	elseif type(val) == "boolean" then
+		return val and "true" or "false"
+	elseif type(val) == "function" then
+		return string.format("loadstring(%q)", get_bytecode(val))
 	elseif type(val) == "table" then
 		return "{ " .. _serialize_table(val) .. " }"
 	else
@@ -439,16 +439,19 @@ end
 --
 
 --- Return the current runtime bytecode of the given data. The byte code
--- will be stripped before it is returned if the given value is a function.
+-- will be stripped before it is returned.
 -- @param val	Value to return as bytecode
 -- @return		String value containing the bytecode of the given data
 function get_bytecode(val)
+	local code
+
 	if type(val) == "function" then
-		local code = string.dump(val)
-		return code and strip_bytecode(code)
+		code = string.dump(val)
 	else
-		return string.dump( loadstring( "return " .. serialize_data(val) ) )
+		code = string.dump( loadstring( "return " .. serialize_data(val) ) )
 	end
+
+	return code and strip_bytecode(code)
 end
 
 --- Strips unnescessary lua bytecode from given string. Information like line
@@ -571,10 +574,89 @@ end
 
 
 --
+-- System utility functions
+--
+
+--- Test whether the current system is operating in big endian mode.
+-- @return	Boolean value indicating whether system is big endian
+function bigendian()
+	return string.byte(string.dump(function() end), 7) == 0
+end
+
+--- Execute given commandline and gather stdout.
+-- @param command	String containing command to execute
+-- @return			String containing the command's stdout
+function exec(command)
+	local pp   = io.popen(command)
+	local data = pp:read("*a")
+	pp:close()
+
+	return data
+end
+
+--- Return a line-buffered iterator over the output of given command.
+-- @param command	String containing the command to execute
+-- @return			Iterator
+function execi(command)
+	local pp = io.popen(command)
+
+	return pp and function()
+		local line = pp:read()
+		
+		if not line then
+			pp:close()
+		end
+		
+		return line
+	end
+end
+
+-- Deprecated
+function execl(command)
+	local pp   = io.popen(command)
+	local line = ""
+	local data = {}
+
+	while true do
+		line = pp:read()
+		if (line == nil) then break end
+		table.insert(data, line)
+	end
+	pp:close()
+
+	return data
+end
+
+--- Returns the absolute path to LuCI base directory.
+-- @return		String containing the directory path
+function libpath()
+	return luci.fs.dirname(require("luci.debug").__file__)
+end
+
+
+--
 -- Coroutine safe xpcall and pcall versions modified for Luci
 -- original version:
 -- coxpcall 1.13 - Copyright 2005 - Kepler Project (www.keplerproject.org)
 --
+-- Copyright © 2005 Kepler Project.
+-- Permission is hereby granted, free of charge, to any person obtaining a
+-- copy of this software and associated documentation files (the "Software"),
+-- to deal in the Software without restriction, including without limitation
+-- the rights to use, copy, modify, merge, publish, distribute, sublicense,
+-- and/or sell copies of the Software, and to permit persons to whom the
+-- Software is furnished to do so, subject to the following conditions:
+--
+-- The above copyright notice and this permission notice shall be
+-- included in all copies or substantial portions of the Software.
+--
+-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+-- EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+-- OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+-- IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+-- TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+-- OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 local performResume, handleReturnValue
 local oldpcall, oldxpcall = pcall, xpcall