From 0a5c5eee15072b712d0cee4cce8d642d1177ff76 Mon Sep 17 00:00:00 2001
From: Hisham Muhammad <hisham@gobolinux.org>
Date: Mon, 2 Sep 2019 14:10:26 -0300
Subject: fs: fix Lua wrapper for interactive mode

---
 spec/init_spec.lua        | 39 +++++++++++++++++++++++++++++++++++++++
 src/luarocks/fs/unix.lua  |  2 +-
 src/luarocks/fs/win32.lua |  5 ++++-
 3 files changed, 44 insertions(+), 2 deletions(-)

diff --git a/spec/init_spec.lua b/spec/init_spec.lua
index 9d68187c..d8a8e899 100644
--- a/spec/init_spec.lua
+++ b/spec/init_spec.lua
@@ -35,6 +35,45 @@ describe("Luarocks init test #integration", function()
          assert.truthy(lfs.attributes(myproject .. "/myproject-dev-1.rockspec"))
       end, finally)
    end)
+
+   it("lua wrapper works", function()
+      test_env.run_in_tmp(function(tmpdir)
+         local myproject = tmpdir .. "/myproject"
+         lfs.mkdir(myproject)
+         lfs.chdir(myproject)
+         
+         assert(run.luarocks("init"))
+         if is_win then
+            assert.truthy(lfs.attributes(myproject .. "/lua.bat"))
+            assert.truthy(lfs.attributes(myproject .. "/luarocks.bat"))
+            local pd = assert(io.popen([[echo print(_VERSION) | lua.bat]], "r"))
+            local output = pd:read("*a")
+            pd:close()
+            assert.match("5", output, 1, true)
+            local fd = io.open("hello.lua", "w")
+            fd:write("print('hello' .. _VERSION)")
+            fd:close()
+            pd = assert(io.popen([[lua.bat hello.lua]], "r"))
+            output = pd:read("*a")
+            pd:close()
+            assert.match("hello", output, 1, true)
+         else
+            assert.truthy(lfs.attributes(myproject .. "/lua"))
+            assert.truthy(lfs.attributes(myproject .. "/luarocks"))
+            local pd = assert(io.popen([[echo "print('hello ' .. _VERSION)" | ./lua]], "r"))
+            local output = pd:read("*a")
+            pd:close()
+            assert.match("hello", output, 1, true)
+            local fd = io.open("hello.lua", "w")
+            fd:write("print('hello' .. _VERSION)")
+            fd:close()
+            pd = assert(io.popen([[./lua ./hello.lua]], "r"))
+            output = pd:read("*a")
+            pd:close()
+            assert.match("hello", output, 1, true)
+         end
+      end, finally)
+   end)
    
    it("LuaRocks init with given arguments", function()
       test_env.run_in_tmp(function(tmpdir)
diff --git a/src/luarocks/fs/unix.lua b/src/luarocks/fs/unix.lua
index 92a2dd91..164ec75d 100644
--- a/src/luarocks/fs/unix.lua
+++ b/src/luarocks/fs/unix.lua
@@ -99,7 +99,7 @@ function unix.wrap_script(script, target, deps_mode, name, version, ...)
       fs.Q(dir.path(cfg.variables["LUA_BINDIR"], cfg.lua_interpreter)),
       "-e",
       fs.Q(table.concat(luainit, ";")),
-      script and fs.Q(script) or "",
+      script and fs.Q(script) or [[$([ "$*" ] || echo -i)]],
       ...
    }
 
diff --git a/src/luarocks/fs/win32.lua b/src/luarocks/fs/win32.lua
index 71b22e35..b9404a73 100644
--- a/src/luarocks/fs/win32.lua
+++ b/src/luarocks/fs/win32.lua
@@ -167,12 +167,15 @@ function win32.wrap_script(script, target, deps_mode, name, version, ...)
       fs.Qb(dir.path(cfg.variables["LUA_BINDIR"], cfg.lua_interpreter)),
       "-e",
       fs.Qb(table.concat(luainit, ";")),
-      script and fs.Qb(script) or "",
+      script and fs.Qb(script) or "%I%",
       ...
    }
 
    wrapper:write("@echo off\r\n")
    wrapper:write("setlocal\r\n")
+   if not script then
+      wrapper:write([[IF "%*"=="" (set I=-i) ELSE (set I=)]] .. "\r\n")
+   end
    wrapper:write("set "..fs.Qb("LUAROCKS_SYSCONFDIR="..cfg.sysconfdir) .. "\r\n")
    wrapper:write(table.concat(argv, " ") .. " %*\r\n")
    wrapper:write("exit /b %ERRORLEVEL%\r\n")
-- 
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