feat: implement chdir function to remove dependency on lfs

1 files changed, 20 insertions, 1 deletions

diff --git a/src/pow_lua.c b/src/pow_lua.c
index 1d2f81a..0cd1019 100644
--- a/src/pow_lua.c
+++ b/src/pow_lua.c
@@ -228,7 +228,26 @@ int pow_lua_install(lua_State *L) {
   return 1;
 }
 
-luaL_Reg libpow[] = {{"extract", pow_lua_extract}, {"install", pow_lua_install}, {NULL, NULL}};
+int pow_lua_chdir(lua_State *L) {
+  if (!lua_isstring(L, 1)) {
+    lua_pushnil(L);
+    lua_pushstring(L, "arg 1 must be string for chdir");
+
+    return 2;
+  }
+
+  char *dir = lua_tostring(L, -1);
+
+  int result = chdir(dir);
+
+  if (result) {
+    pow_log_error("failed to chdir %d", result);
+  }
+
+  return 1;
+}
+
+luaL_Reg libpow[] = {{"chdir", pow_lua_chdir}, {"extract", pow_lua_extract}, {"install", pow_lua_install}, {NULL, NULL}};
 
 int pow_lua_load(lua_State *L, pow_config *cfg) {
   luaL_newlib(L, libpow);