Merge pull request #181 from Tieske/win_install_checkpath

Search system path for Lua install instead of ancient defaults

1 files changed, 65 insertions, 11 deletions

diff --git a/install.bat b/install.bat
index 02a3f013..a4257be6 100644
--- a/install.bat
+++ b/install.bat
@@ -41,6 +41,32 @@ local function die(message)
         os.exit(1)

 end

 

+function split_string(str, delim, maxNb)

+        -- Eliminate bad cases...

+        if string.find(str, delim) == nil then

+                return { str }

+        end

+        if maxNb == nil or maxNb < 1 then

+                maxNb = 0        -- No limit

+        end

+        local result = {}

+        local pat = "(.-)" .. delim .. "()"

+        local nb = 0

+        local lastPos

+        for part, pos in string.gmatch(str, pat) do

+                nb = nb + 1

+                result[nb] = part

+                lastPos = pos

+                if nb == maxNb then break end

+        end

+        -- Handle the last field

+        if nb ~= maxNb then

+                result[nb + 1] = string.sub(str, lastPos)

+        end

+        return result

+end

+

+

 local function exec(cmd)

         --print(cmd)

         local status = os.execute(cmd)

@@ -80,6 +106,9 @@ Configuring the Lua interpreter:
 /LV [version]  Lua version to use; either 5.1 or 5.2.

                Default is 5.1

 /LUA [dir]     Location where Lua is installed - e.g. c:\lua\5.1\

+               If not provided, the installer will search the system

+               path and some default locations for a valid Lua

+               installation.

                This is the base directory, the installer will look

                for subdirectories bin, lib, include. Alternatively

                these can be specified explicitly using the /INC,

@@ -184,6 +213,7 @@ end
 -- ***********************************************************

 local function look_for_interpreter (directory)

         if vars.LUA_BINDIR then

+        -- if LUA_BINDIR is specified, it must be there, otherwise we fail

                 if exists( S"$LUA_BINDIR\\lua$LUA_VERSION.exe" ) then

                         vars.LUA_INTERPRETER = S"lua$LUA_VERSION.exe"

                         print(S"       Found $LUA_BINDIR\\$LUA_INTERPRETER")

@@ -313,9 +343,31 @@ end
 

 local function look_for_lua_install ()

         print("Looking for Lua interpreter")

-        local directories = { [[c:\lua5.1.2]], [[c:\lua]], [[c:\kepler\1.1]] }

+        local directories

         if vars.LUA_PREFIX then

-                table.insert(directories, 1, vars.LUA_PREFIX)

+                directories = { vars.LUA_PREFIX }

+        else

+                -- no prefix given, so use path

+                directories = (os.getenv("PATH",";") or "")

+                local i = 1

+        while i ~= 0 do directories, i = directories:gsub(";;",";") end  --remove all doubles

+                directories = split_string(directories,";")

+                -- if a path element ends with "\bin\" then remove it, as the searcher will check there anyway

+                for i, val in ipairs(directories) do

+                        -- remove trailing backslash

+                        while val:sub(-1,-1) == "\\" and val:sub(-2,-1) ~= ":\\" do 

+                                val = val:sub(1,-2)

+                        end

+                        -- remove trailing 'bin'

+                        if val:upper():sub(-4,-1) == "\\BIN" or val:upper():sub(-4,-1) == ":BIN" then

+                                val = val:sub(1,-5)

+                        end

+                        directories[i] = val

+                end

+                -- finaly add some other default paths

+                table.insert(directories, [[c:\lua5.1.2]])

+                table.insert(directories, [[c:\lua]])

+                table.insert(directories, [[c:\kepler\1.1]])

         end

         if vars.LUA_BINDIR and vars.LUA_LIBDIR and vars.LUA_INCDIR then

                 if look_for_interpreter(vars.LUA_BINDIR) and 

@@ -425,13 +477,10 @@ vars.LUADIR = S"$FULL_PREFIX\\lua"
 vars.INCDIR = S"$FULL_PREFIX\\include"

 vars.LUA_SHORTV = vars.LUA_VERSION:gsub("%.", "")

 

-if not look_for_lua_install() then

-        print("Could not find Lua. Will install its own copy.")

-        print("See /? for options for specifying the location of Lua.")

+if INSTALL_LUA then

         if vars.LUA_VERSION ~= "5.1" then

-                die("Cannot install own copy because no 5.2 version is bundled")

+                die("Cannot install own copy of Lua because only 5.1 is bundled")

         end

-        INSTALL_LUA = true

         vars.LUA_INTERPRETER = "lua5.1"

         vars.LUA_BINDIR = vars.BINDIR

         vars.LUA_LIBDIR = vars.LIBDIR

@@ -440,8 +489,13 @@ if not look_for_lua_install() then
         vars.LUA_RUNTIME = "MSVCR80"

         vars.UNAME_M = "x86"

 else

-        vars.UNAME_M = get_architecture()

-        print(S[[

+        if not look_for_lua_install() then

+                die("Could not find Lua. See /? for options for specifying the location of Lua, or installing a bundled copy of Lua 5.1.")

+        end

+    vars.UNAME_M = get_architecture()  -- can only do when installation was found

+end

+

+print(S[[

 

 Will configure LuaRocks with the following paths:

 LuaRocks       : $FULL_PREFIX

@@ -453,7 +507,7 @@ Binaries will be linked against: $LUA_LIBNAME with runtime $LUA_RUNTIME
 System architecture detected as: $UNAME_M

 

 ]])

-end

+

 

 -- ***********************************************************

 -- Install LuaRocks files

@@ -642,7 +696,7 @@ if REGISTRY then
         print()

         print([[Loading registry information for ".rockspec" files]])

         exec( S[[lua5.1\bin\lua5.1.exe "$FULL_PREFIX\LuaRocks.reg.lua" "$FULL_PREFIX\LuaRocks.reg.template"]] )

-        exec( S"$FULL_PREFIX\\LuaRocks.reg" )

+        exec( S[["$FULL_PREFIX\\LuaRocks.reg"]] )

 end

 

 -- ***********************************************************