From c9ead44aa24b9b706a5bdc670639ddcb020aab1d Mon Sep 17 00:00:00 2001
From: Craig Everett <zxq9@zxq9.com>
Date: Sun, 10 May 2026 15:01:50 +0900
Subject: [PATCH] Let non-zx projects call contract_create*

---
 src/hz.erl | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/src/hz.erl b/src/hz.erl
index 4382daa..e90ef00 100644
--- a/src/hz.erl
+++ b/src/hz.erl
@@ -1213,21 +1213,35 @@ bundle_source(Compiled) ->
 
 bundle_source2(Source, Compiled) ->
     File = unicode:characters_to_list(maps:get(contract_name, Compiled, "contract.aes")),
-    <<RN:(8 * 8)>> = crypto:strong_rand_bytes(8),
-    Rand = integer_to_binary(RN, 36),
-    TmpDir = filename:join(zx_lib:path(tmp), Rand),
+    TempDir = temp_dir(),
     TgzName = File ++ ".tgz",
-    TarGzPath = filename:join(TmpDir, TgzName),
+    TarGzPath = filename:join(TempDir, TgzName),
     ok = filelib:ensure_dir(TarGzPath),
     {ok, CWD} = file:get_cwd(),
-    ok = file:set_cwd(TmpDir),
+    ok = file:set_cwd(TempDir),
     ok = erl_tar:create(TarGzPath, [{File, Source}], [compressed]),
     {ok, TgzBin} = file:read_file(TarGzPath),
     ok = file:set_cwd(CWD),
-    ok = file:del_dir_r(TmpDir),
+    ok = file:del_dir_r(TempDir),
     {ok, Hash} = eblake2:blake2b(32, TgzBin),
     Compiled#{contract_source => TgzBin, source_hash => Hash}.
 
+temp_dir() ->
+    case erlang:function_exported(zx_lib, path, 3) of
+        true ->
+            TS = integer_to_list(erlang:system_time()),
+            filename:join(zx_lib:path(tmp, "otpr", "hakuzaru"), TS);
+        false ->
+            temp_dir(os:type())
+    end.
+
+temp_dir({unix, _}) ->
+    string:trim(os:cmd("mktemp -d"));
+temp_dir({win32, _}) ->
+    Temp = os:getenv("TEMP"),
+    TS = integer_to_list(erlang:system_time()),
+    filename:join([Temp, "hakuzaru", TS]).
+
 
 -spec read_aci(Path) -> Result
     when Path   :: file:filename(),