Update publish-luarocks.yaml and remove generate_rockspec.lua

Author: bytexenon

.github/workflows/publish-luarocks.yaml

@@ -1,9 +1,8 @@
 name: LuaRocks Release
 
 on:
-  push:
-    branches:
-      - main
+  release:
+    types: [published]
 
 jobs:
   release:
@@ -24,7 +23,7 @@ jobs:
 
     - name: Generate rockspec
       run: |
-        lua build/generate_rockspec.lua ${GITHUB_REF#refs/tags/}
+        sh build/generate_rockspec.sh ${GITHUB_REF#refs/tags/}
 
     - name: Upload to LuaRocks
       run: |

build/generate_rockspec.lua renamed to build/generate_rockspec.sh

@@ -1,11 +1,12 @@
-local args = {...}
-local version = args[1]
+#!/bin/bash
 
-local rockspec = [[
+version=$1
+
+rockspec=$(cat <<EOF
 package = "MathParser"
-version = "]]..version..[["
+version = "$version"
 source = {
-  url = "https://github.com/ByteXenon/MathParser.lua/archive/v]]..version..[[.tar.gz"
+  url = "https://github.com/ByteXenon/MathParser.lua/archive/v$version.tar.gz"
 }
 description = {
   summary = "A math parser for Lua.",
@@ -22,8 +23,7 @@ build = {
     ["MathParser"] = "MathParser.min.lua"
   }
 }
-]]
+EOF
+)
 
-local file = io.open("MathParser-"..version..".rockspec", "w")
-file:write(rockspec)
-file:close()
+echo "$rockspec" > "MathParser-$version.rockspec"