1 files changed, 65 insertions, 0 deletions
diff --git a/lib9/errstr-Nt.c b/lib9/errstr-Nt.c
new file mode 100644
index 00000000..53c35323
--- /dev/null
+++ b/lib9/errstr-Nt.c
@@ -0,0 +1,65 @@
+#include "lib9.h"
+#include <Windows.h>
+
+static char	errstring[ERRMAX];
+
+enum
+{
+	Magic = 0xffffff
+};
+
+static void
+winerror(int e, char *buf, uint nerr)
+{
+	int r;
+	char buf2[ERRMAX], *p, *q;
+	
+	r = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
+		0, e, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+		buf2, sizeof(buf2), 0);
+
+	if(r == 0)
+		snprint(buf2, ERRMAX, "windows error %d", e);
+
+	q = buf2;
+	for(p = buf2; *p; p++) {
+		if(*p == '\r')
+			continue;
+		if(*p == '\n')
+			*q++ = ' ';
+		else
+			*q++ = *p;
+	}
+	*q = '\0';
+	utfecpy(buf, buf+nerr, buf2);
+}
+
+void
+werrstr(char *fmt, ...)
+{
+	va_list arg;
+
+	va_start(arg, fmt);
+	vseprint(errstring, errstring+sizeof(errstring), fmt, arg);
+	va_end(arg);
+	SetLastError(Magic);
+}
+
+int
+errstr(char *buf, uint nerr)
+{
+	DWORD le;
+
+	le = GetLastError();
+	if(le == Magic)
+		utfecpy(buf, buf+nerr, errstring);
+	else
+		winerror(le, buf, nerr);
+	return 1;
+}
+
+void
+oserrstr(char *buf, uint nerr)
+{
+	winerror(GetLastError(), buf, nerr);
+}