1 files changed, 86 insertions, 0 deletions
diff --git a/src/win/dl.c b/src/win/dl.c
new file mode 100644
index 0000000000..d5b8f7c7d3
--- /dev/null
+++ b/src/win/dl.c
@@ -0,0 +1,86 @@
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+#include "internal.h"
+
+static int uv__dlerror(uv_lib_t* lib, int errorno);
+
+
+int uv_dlopen(const char* filename, uv_lib_t* lib) {
+  WCHAR filename_w[32768];
+
+  lib->handle = NULL;
+  lib->errmsg = NULL;
+
+  if (!uv_utf8_to_utf16(filename, filename_w, ARRAY_SIZE(filename_w))) {
+    return uv__dlerror(lib, GetLastError());
+  }
+
+  lib->handle = LoadLibraryExW(filename_w, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
+  if (lib->handle == NULL) {
+    return uv__dlerror(lib, GetLastError());
+  }
+
+  return 0;
+}
+
+
+void uv_dlclose(uv_lib_t* lib) {
+  if (lib->errmsg) {
+    LocalFree((void*)lib->errmsg);
+    lib->errmsg = NULL;
+  }
+
+  if (lib->handle) {
+    /* Ignore errors. No good way to signal them without leaking memory. */
+    FreeLibrary(lib->handle);
+    lib->handle = NULL;
+  }
+}
+
+
+int uv_dlsym(uv_lib_t* lib, const char* name, void** ptr) {
+  *ptr = (void*) GetProcAddress(lib->handle, name);
+  return uv__dlerror(lib, *ptr ? 0 : GetLastError());
+}
+
+
+const char* uv_dlerror(uv_lib_t* lib) {
+  return lib->errmsg ? lib->errmsg : "no error";
+}
+
+
+static int uv__dlerror(uv_lib_t* lib, int errorno) {
+  if (lib->errmsg) {
+    LocalFree((void*)lib->errmsg);
+    lib->errmsg = NULL;
+  }
+
+  if (errorno) {
+    FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
+                   FORMAT_MESSAGE_IGNORE_INSERTS, NULL, errorno,
+                   MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US),
+                   (LPSTR)&lib->errmsg, 0, NULL);
+  }
+
+  return errorno ? -1 : 0;
+}