1 files changed, 88 insertions, 0 deletions
diff --git a/win/tclWinPanic.c b/win/tclWinPanic.c
new file mode 100644
index 0000000..fbd3e46
--- /dev/null
+++ b/win/tclWinPanic.c
@@ -0,0 +1,88 @@
+/*
+ * tclWinPanic.c --
+ *
+ *	Contains the Windows-specific command-line panic proc.
+ *
+ * Copyright (c) 2013 by Jan Nijtmans.
+ * All rights reserved.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_ConsolePanic --
+ *
+ *	Display a message. If a debugger is present, present it directly to
+ *	the debugger, otherwise send it to stderr.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_ConsolePanic(
+    const char *format, ...)
+{
+#define TCL_MAX_WARN_LEN 26000
+    va_list argList;
+    WCHAR msgString[TCL_MAX_WARN_LEN];
+    char buf[TCL_MAX_WARN_LEN * 3];
+    HANDLE handle = GetStdHandle(STD_ERROR_HANDLE);
+    DWORD dummy;
+
+    va_start(argList, format);
+    vsnprintf(buf+3, sizeof(buf)-3, format, argList);
+    buf[sizeof(buf)-1] = 0;
+    msgString[TCL_MAX_WARN_LEN-1] = '\0';
+    MultiByteToWideChar(CP_UTF8, 0, buf+3, -1, msgString, TCL_MAX_WARN_LEN);
+
+    /*
+     * Truncate MessageBox string if it is too long to not overflow the buffer.
+     */
+
+    if (msgString[TCL_MAX_WARN_LEN-1] != '\0') {
+	memcpy(msgString + (TCL_MAX_WARN_LEN - 5), L" ...", 5 * sizeof(WCHAR));
+    }
+
+    if (IsDebuggerPresent()) {
+	OutputDebugStringW(msgString);
+    } else if (_isatty(2)) {
+	WriteConsoleW(handle, msgString, wcslen(msgString), &dummy, 0);
+    } else {
+	buf[0] = '\xEF'; buf[1] = '\xBB'; buf[2] = '\xBF'; /* UTF-8 bom */
+	WriteFile(handle, buf, strlen(buf), &dummy, 0);
+	WriteFile(handle, "\n", 1, &dummy, 0);
+	FlushFileBuffers(handle);
+    }
+#   if defined(__GNUC__)
+	__builtin_trap();
+#   elif defined(_WIN64)
+	__debugbreak();
+#   elif defined(_MSC_VER)
+	_asm {int 3}
+#   else
+	DebugBreak();
+#   endif
+#if defined(_WIN32)
+	ExitProcess(1);
+#else
+	abort();
+#endif
+}
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * tab-width: 8
+ * End:
+ */