sync'ing files for RCS->CVS migration

[moira.git] / util / et / com_err.c

diff --git a/util/et/com_err.c b/util/et/com_err.c
new file mode 100644 (file)
index 0000000..8748db8
--- /dev/null
+++ b/util/et/com_err.c
@@ -0,0 +1,140 @@
+/*
+ * Copyright 1987, 1988 by MIT Student Information Processing Board.
+ *
+ * For copyright info, see mit-sipb-copyright.h.
+ */
+
+#include <stdio.h>
+#include "mit-sipb-copyright.h"
+
+/*
+ * Our environment only provides for ANSI's <stdarg.h> when using GNU
+ * C.  Grump grump...
+ */
+#if ! __GNUC__
+#define VARARGS 1
+#endif
+
+/* We don't have the v*printf routines... */
+#define vfprintf(stream,fmt,args) _doprnt(fmt,args,stream)
+
+#if __STDC__ && !VARARGS
+#      include <stdarg.h>
+#else /* varargs: not STDC or no <stdarg> */
+       /* Non-ANSI, always take <varargs.h> path. */
+#      undef VARARGS
+#      define VARARGS 1
+#      include <varargs.h>
+#      undef vfprintf
+#      define vfprintf(stream,fmt,args) _doprnt(fmt,args,stream)
+#endif /* varargs */
+
+#include "error_table.h"
+#include "internal.h"
+
+/*
+ * Protect us from header version (externally visible) of com_err, so
+ * we can survive in a <varargs.h> environment.  I think.
+ */
+#define com_err com_err_external
+#include "com_err.h"
+#undef com_err
+
+/* BSD. sigh. */
+#undef vfprintf
+#define vfprintf(stream,fmt,args) _doprnt(fmt,args,stream)
+
+#if ! lint
+static const char rcsid[] =
+    "$Header$";
+#endif /* ! lint */
+
+static void
+#ifdef __STDC__
+    default_com_err_proc (const char *whoami, long code, const char *fmt, va_list args)
+#else
+    default_com_err_proc (whoami, code, fmt, args)
+    const char *whoami;
+    long code;
+    const char *fmt;
+    va_list args;
+#endif
+{
+    if (whoami) {
+       fputs(whoami, stderr);
+       fputs(": ", stderr);
+    }
+    if (code) {
+       fputs(error_message(code), stderr);
+       fputs(" ", stderr);
+    }
+    if (fmt) {
+        vfprintf (stderr, fmt, args);
+    }
+    putc('\n', stderr);
+    /* should do this only on a tty in raw mode */
+    putc('\r', stderr);
+    fflush(stderr);
+}
+
+#ifdef __STDC__
+typedef void (*errf) (const char *, long, const char *, va_list);
+#else
+typedef void (*errf) ();
+#endif
+
+errf com_err_hook = default_com_err_proc;
+
+void com_err_va (whoami, code, fmt, args)
+    const char *whoami;
+    long code;
+    const char *fmt;
+    va_list args;
+{
+    (*com_err_hook) (whoami, code, fmt, args);
+}
+
+#if ! VARARGS
+void com_err (const char *whoami,
+             long code,
+             const char *fmt, ...)
+{
+#else
+void com_err (va_alist)
+    va_dcl
+{
+    const char *whoami, *fmt;
+    long code;
+#endif
+    va_list pvar;
+
+    if (!com_err_hook)
+       com_err_hook = default_com_err_proc;
+#if VARARGS
+    va_start (pvar);
+    whoami = va_arg (pvar, const char *);
+    code = va_arg (pvar, long);
+    fmt = va_arg (pvar, const char *);
+#else
+    va_start(pvar, fmt);
+#endif
+    com_err_va (whoami, code, fmt, pvar);
+    va_end(pvar);
+}
+
+errf set_com_err_hook (new_proc)
+    errf new_proc;
+{
+    errf x = com_err_hook;
+    if (new_proc)
+      com_err_hook = new_proc;
+    else
+      com_err_hook = default_com_err_proc;
+    return x;
+}
+
+errf reset_com_err_hook () {
+    errf x = com_err_hook;
+    com_err_hook = default_com_err_proc;
+    return x;
+}