1 files changed, 96 insertions, 0 deletions
diff --git a/libdvdread-embedded/msvc/contrib/dlfcn.c b/libdvdread-embedded/msvc/contrib/dlfcn.c
new file mode 100644
index 0000000..01b5781
--- /dev/null
+++ b/libdvdread-embedded/msvc/contrib/dlfcn.c
@@ -0,0 +1,96 @@
+/*
+ * Adopted from Apache DSO code.
+ * Portions copyright Apache Software Foundation
+ *
+ * Structures and types used to implement dlopen, dlsym, etc.
+ * on Windows 95/NT.
+ */
+#include <windows.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../include/dlfcn.h"
+#include "../include/os_types.h"
+
+void *dlopen(const char *module_name, int mode)
+{
+    UINT em;
+    HINSTANCE dsoh;
+    char path[MAX_PATH], *p;
+    (void)mode;
+    /* Load the module...
+     * per PR2555, the LoadLibraryEx function is very picky about slashes.
+     * Debugging on NT 4 SP 6a reveals First Chance Exception within NTDLL.
+     * LoadLibrary in the MS PSDK also reveals that it -explicitly- states
+     * that backslashes must be used.
+     *
+     * Transpose '\' for '/' in the filename.
+     */
+    (void)strncpy(path, module_name, MAX_PATH);
+    path[MAX_PATH - 1] = 0;
+    p = path;
+    while ((p = strchr(p, '/')))
+        *p = '\\';
+
+    /* First assume the dso/dll's required by -this- dso are sitting in the
+     * same path or can be found in the usual places.  Failing that, let's
+     * let that dso look in the apache root.
+     */
+    em = SetErrorMode(SEM_FAILCRITICALERRORS);
+    dsoh = LoadLibraryEx(path, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
+    if (!dsoh)
+    {
+        SetLastError(0); // clear the last error
+        dsoh = LoadLibraryEx(path, NULL, 0);
+    }
+    SetErrorMode(em);
+    SetLastError(0); // clear the last error
+    return (void *)dsoh;
+}
+
+char *dlerror(void)
+{
+    int len, nErrorCode;
+    static char errstr[120];
+    /* This is -not- threadsafe code, but it's about the best we can do.
+     * mostly a potential problem for isapi modules, since LoadModule
+     * errors are handled within a single config thread.
+     */
+
+    if((nErrorCode = GetLastError()) == 0)
+      return((char *)0);
+
+    SetLastError(0); // clear the last error
+    len = snprintf(errstr, sizeof(errstr), "(%d) ", nErrorCode);
+
+    len += FormatMessage(
+            FORMAT_MESSAGE_FROM_SYSTEM,
+            NULL,
+            nErrorCode,
+            MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), /* Default language */
+            (LPTSTR) errstr + len,
+            sizeof(errstr) - len,
+            NULL
+        );
+        /* FormatMessage may have appended a newline (\r\n). So remove it
+         * and use ": " instead like the Unix errors. The error may also
+         * end with a . before the return - if so, trash it.
+         */
+    if (len > 1 && errstr[len-2] == '\r' && errstr[len-1] == '\n') {
+        if (len > 2 && errstr[len-3] == '.')
+            len--;
+        errstr[len-2] = ':';
+        errstr[len-1] = ' ';
+    }
+    return errstr;
+}
+
+int dlclose(void *handle)
+{
+  return  FreeLibrary(handle);
+}
+
+void *dlsym(void *handle, const char *name)
+{
+  return GetProcAddress(handle, name);
+}