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-rw-r--r--w32/subproc/w32err.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/w32/subproc/w32err.c b/w32/subproc/w32err.c
new file mode 100644
index 0000000..e4e8835
--- /dev/null
+++ b/w32/subproc/w32err.c
@@ -0,0 +1,51 @@
+#include <windows.h>
+#include "w32err.h"
+
+/*
+ * Description: the win32 version of perror()
+ *
+ * Returns: a pointer to a static error
+ *
+ * Notes/Dependencies: I got this from
+ * comp.os.ms-windows.programmer.win32
+ */
+char *
+map_win32_error_to_string (DWORD ercode) {
+/* __declspec (thread) necessary if you will use multiple threads */
+__declspec (thread) static char szMessageBuffer[128];
+
+ /* Fill message buffer with a default message in
+ * case FormatMessage fails
+ */
+ wsprintf (szMessageBuffer, "Error %ld", ercode);
+
+ /*
+ * Special code for winsock error handling.
+ */
+ if (ercode > WSABASEERR) {
+ HMODULE hModule = GetModuleHandle("wsock32");
+ if (hModule != NULL) {
+ FormatMessage(FORMAT_MESSAGE_FROM_HMODULE,
+ hModule,
+ ercode,
+ LANG_NEUTRAL,
+ szMessageBuffer,
+ sizeof(szMessageBuffer),
+ NULL);
+ FreeLibrary(hModule);
+ }
+ } else {
+ /*
+ * Default system message handling
+ */
+ FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
+ NULL,
+ ercode,
+ LANG_NEUTRAL,
+ szMessageBuffer,
+ sizeof(szMessageBuffer),
+ NULL);
+ }
+ return szMessageBuffer;
+}
+