dev-lua/compat53: add 0.15.1 w/ a basic testsuite

the testsuite from upstream cannot be used as it is
select a few tests for basic operations
use pushd/popd

Signed-off-by: Nicolas PARLANT <nicolas.parlant@parhuet.fr>
Part-of: https://codeberg.org/gentoo/gentoo/pulls/1468
Merges: https://codeberg.org/gentoo/gentoo/pulls/1468
Signed-off-by: Sam James <sam@gentoo.org>

dev-lua/compat53/Manifest

@@ -1 +1,2 @@
 DIST lua-compat-5.3-0.14.4.tar.gz 61925 BLAKE2B af3032e082b77cd9e3e9f9b8bdee1feb17235b0578dd098d77e9330887623df88ebf8b3a39f72e030a0ad1144695b02261fc4c73e273a70364b93dcccd5e6b46 SHA512 0e6bd10513cab6053df7a911ba117c2dd5b5409e75bfe0890ee2ec0122893aa70fc1dc88b10a65553dd1069a038e3c7295dccc2de5c10338eccc718029d3f7b5
+DIST lua-compat-5.3-0.15.1.tar.gz 63106 BLAKE2B 82f39f74ed3dc8b609900cfb8bcc33ca0a2d3c53f70617b9bdf4b56f7a1e16519cd483afa258230e43d1f96425c16032e986987570e0b66327f90cebdd8f3b08 SHA512 6b17213321a08268228a97180e08289b85d6554b25cac89f7b7f72e79be0169af233fade87718b4a68485e0357dcb34245e660222e5c9d06254b0f3b64ef19cd

dev-lua/compat53/compat53-0.15.1.ebuild

@@ -0,0 +1,82 @@
+# Copyright 2024-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LUA_COMPAT=( lua5-{1..4} luajit )
+inherit edo lua toolchain-funcs
+
+MY_PN="lua-${PN/53/-5.3}"
+MY_P="${MY_PN}-${PV}"
+
+DESCRIPTION="Compatibility module providing Lua-5.3-style APIs for Lua 5.2 and 5.1"
+HOMEPAGE="https://github.com/lunarmodules/lua-compat-5.3/"
+SRC_URI="https://github.com/lunarmodules/${MY_PN}/archive/v${PV}.tar.gz -> ${MY_P}.tar.gz"
+S="${WORKDIR}/${MY_P}"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~hppa ~ppc ~ppc64 ~sparc ~x86"
+
+REQUIRED_USE="${LUA_REQUIRED_USE}"
+
+DEPEND="${LUA_DEPS}"
+RDEPEND="
+	${DEPEND}
+	!<dev-lua/luarocks-3.12.2-r1
+"
+
+src_prepare() {
+	default
+	# change to name of compat53.'module' calls
+	# this is required, see rockspecs
+	mv lbitlib.c bitlib.c || die
+	mv liolib.c io.c || die
+	mv lstrlib.c string.c || die
+	mv ltablib.c table.c || die
+	mv lutf8lib.c utf8.c || die
+	lua_copy_sources
+}
+
+lua_src_compile() {
+	pushd >/dev/null "${BUILD_DIR}" || die
+	local u=""
+	for u in *.c; do
+		edo $(tc-getCC) -shared -fPIC \
+			${CPPFLAGS} \
+			${CFLAGS} $(lua_get_CFLAGS) \
+			${SOFLAGS} \
+			${LDFLAGS} $(lua_get_LIBS) \
+			-o compat53/"${u/.c/.so}" ${u} c-api/compat-5.3.c
+	done
+	popd >/dev/null || die
+}
+
+src_compile() {
+	lua_foreach_impl lua_src_compile
+}
+
+lua_src_test() {
+	pushd >/dev/null "${BUILD_DIR}" || die
+	${LUA} "${FILESDIR}"/basic_testsuite.lua || die
+	popd >/dev/null || die
+}
+
+src_test() {
+	lua_foreach_impl lua_src_test
+}
+
+lua_src_install() {
+	pushd >/dev/null "${BUILD_DIR}"/compat53 || die
+	insinto $(lua_get_lmod_dir)/${PN}
+	doins *.lua
+	exeinto $(lua_get_cmod_dir)/${PN}
+	doexe *.so
+	popd >/dev/null || die
+}
+
+src_install() {
+	lua_foreach_impl lua_src_install
+	doheader c-api/*
+	einstalldocs
+}

dev-lua/compat53/files/basic_testsuite.lua

@@ -0,0 +1,72 @@
+-- the use of tests/test.lua is done by comparing the output between 5.1 and 5.3
+-- it's not adapted for our case, select a few for basic operations
+
+package.path  = "./?.lua;./?/init.lua"
+package.cpath = "./?.so"
+
+require("compat53")
+  
+local failures = 0
+local function test(name, f)
+  print("testing " .. name .. "...")
+  local ok, err = pcall(require, "compat53." .. name)
+  if not ok then
+    failures = failures + 1
+    print("FAIL: " .. err)
+    return
+  end
+
+  ok, err = pcall(f)
+  if ok then
+    print(name .. "... OK")
+  else
+    failures = failures + 1
+    print("FAIL: " .. err)
+  end
+end
+
+test("utf8", function()
+  local unpack = table.unpack or unpack
+  local function utf8rt(s)
+    local t = { utf8.codepoint(s, 1, #s) }
+    local ps, cs = {}, {}
+    for p,c in utf8.codes(s) do
+      ps[#ps+1], cs[#cs+1] = p, c
+    end
+    print("utf8.codes", unpack(ps))
+    print("utf8.codes", unpack(cs))
+    print("utf8.codepoint", unpack(t))
+    print("utf8.len", utf8.len(s), #t, #s)
+    print("utf8.char", utf8.char(unpack(t)))
+  end
+  utf8rt("äöüßÄÖÜ")
+  utf8rt("abcdefg")
+  local s = "äöüßÄÖÜ"
+  print("utf8.offset", utf8.offset(s, 1, 1))
+  print("utf8.offset", utf8.offset(s, 2, 1))
+  print("utf8.offset", utf8.offset(s, 3, 1))
+  print("utf8.offset", pcall(utf8.offset, s, 3, 2))
+  print("utf8.offset", utf8.offset(s, 3, 3))
+  print("utf8.offset", utf8.offset(s, -1, 7))
+  print("utf8.offset", utf8.offset(s, -2, 7))
+  print("utf8.offset", utf8.offset(s, -3, 7))
+  print("utf8.offset", utf8.offset(s, -1))
+end)
+
+test("string", function()
+  local format = "bBhHlLjJdc3z"
+  local s = string.pack(format, -128, 255, -32768, 65535, -2147483648, 4294967295, -32768, 65536, 1.25, "abc", "defgh")
+  print("string.unpack", string.unpack(format, s))
+end)
+
+test("table", function()
+  local t = table.pack("a", nil, "b", nil)
+  print("table.(un)pack()", t.n, table.unpack(t, 1, t.n))
+end)
+
+if failures == 0 then
+  print("tests PASSED")
+else
+  print("tests FAILED (" .. failures .. " failures)")
+  os.exit(1)
+end