Add a script to clean up tabs and spaces in the code files

resources/cleanup.lua

@@ -0,0 +1,66 @@
+-- Lua script used to clean up tabs and spaces in C, CPP and H files.
+-- Copyright (c) 2014, bel
+-- MIT License (http://opensource.org/licenses/mit-license.php)
+--
+-- It can be used from the command line:
+-- Call Lua5.1 or Lua5.2 + this script file + the C/CPP/H file to clean
+--
+-- It can be used in Visual Studio as an external tool:
+-- command: Lua5.1.exe or Lua5.2.exe
+-- argument: "X:\civetweb\resources\cleanup.lua" $(ItemPath)
+--
+
+clean = arg[1]
+print("Cleaning " .. clean)
+
+lines = io.lines(clean)
+if not lines then
+    print("Can not open file " .. clean)
+    return
+end
+
+function trimright(s)
+  return s:match "^(.-)%s*$"
+end
+
+local lineend = false
+local tabspace = false
+local changed = false
+local invalid = false
+local newfile = {}
+
+for l in lines do
+    local lt = trimright(l)
+    if (lt ~= l) then
+        lineend = true
+        changed = true
+    end
+    local lts = lt:gsub('\t', '    ')
+    if (lts ~= lt) then
+        tabspace = true
+        changed = true
+    end
+    for i=1,#lts do
+        local b = string.byte(lts,i)
+        if b<32 or b>=127 then
+            print("Letter " .. string.byte(l,i) .. " (" .. b .. ") found in line " .. lts)
+            invalid = true
+        end
+    end
+
+    newfile[#newfile + 1] = lts
+end
+
+print("Line endings trimmed:     " .. tostring(lineend))
+print("Tabs converted to spaces: " .. tostring(tabspace))
+print("Invalid characters:       " .. tostring(invalid))
+
+if changed then
+    local f = io.open(clean, "w")
+    for i=1,#newfile do
+        f:write(newfile[i])
+        f:write("\n")
+    end
+    f:close()
+    print("File cleaned")
+end