1 files changed, 118 insertions, 0 deletions
diff --git a/Utilities/cmlibuv/src/win/dl.c b/Utilities/cmlibuv/src/win/dl.c
new file mode 100644
index 0000000..39e400a
--- /dev/null
+++ b/Utilities/cmlibuv/src/win/dl.c
@@ -0,0 +1,118 @@
+/* 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 (!MultiByteToWideChar(CP_UTF8,
+                           0,
+                           filename,
+                           -1,
+                           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(const uv_lib_t* lib) {
+  return lib->errmsg ? lib->errmsg : "no error";
+}
+
+
+static void uv__format_fallback_error(uv_lib_t* lib, int errorno){
+  DWORD_PTR args[1] = { (DWORD_PTR) errorno };
+  LPSTR fallback_error = "error: %1!d!";
+
+  FormatMessageA(FORMAT_MESSAGE_FROM_STRING |
+                 FORMAT_MESSAGE_ARGUMENT_ARRAY |
+                 FORMAT_MESSAGE_ALLOCATE_BUFFER,
+                 fallback_error, 0, 0,
+                 (LPSTR) &lib->errmsg,
+                 0, (va_list*) args);
+}
+
+
+
+static int uv__dlerror(uv_lib_t* lib, int errorno) {
+  DWORD res;
+
+  if (lib->errmsg) {
+    LocalFree((void*)lib->errmsg);
+    lib->errmsg = NULL;
+  }
+
+  if (errorno) {
+    res = 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);
+    if (!res && GetLastError() == ERROR_MUI_FILE_NOT_FOUND) {
+      res = FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER |
+                           FORMAT_MESSAGE_FROM_SYSTEM |
+                           FORMAT_MESSAGE_IGNORE_INSERTS, NULL, errorno,
+                           0, (LPSTR) &lib->errmsg, 0, NULL);
+    }
+
+    if (!res) {
+      uv__format_fallback_error(lib, errorno);
+    }
+  }
+
+  return errorno ? -1 : 0;
+}