Changed for com_err compatibilty

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@4131 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/com_err/com_err.c

@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 1997 Kungliga Tekniska H<>gskolan
+ * (Royal Institute of Technology, Stockholm, Sweden). 
+ * All rights reserved. 
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions 
+ * are met: 
+ *
+ * 1. Redistributions of source code must retain the above copyright 
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright 
+ *    notice, this list of conditions and the following disclaimer in the 
+ *    documentation and/or other materials provided with the distribution. 
+ *
+ * 3. All advertising materials mentioning features or use of this software 
+ *    must display the following acknowledgement: 
+ *      This product includes software developed by Kungliga Tekniska 
+ *      H<>gskolan and its contributors. 
+ *
+ * 4. Neither the name of the Institute nor the names of its contributors 
+ *    may be used to endorse or promote products derived from this software 
+ *    without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
+ * SUCH DAMAGE. 
+ */
+
+#include <stdio.h>
+#include "com_err.h"
+
+static struct error_table *et_list;
+
+const char *
+error_message (long code)
+{
+    static char msg[128];
+    const char *p = com_right(et_list, code);
+    if(p){
+	strncpy(msg, p, sizeof(msg));
+	msg[sizeof(msg)-1] = '\0';
+    } else{
+	snprintf(msg, sizeof(msg), "Unknown error %d", code);
+    }
+    return msg;
+}
+
+int
+init_error_table(const char **msgs, long base, int count)
+{
+    initialize_error_table(&et_list, msgs, count, base);
+    return 0;
+}
+
+static void
+default_proc (const char *whoami, long code, const char *fmt, va_list args)
+{
+    char f[sizeof("%s: %s %s\r\n")] = "";
+    char *x;
+    const void *arg[3], **ap = arg;
+    
+    if(whoami) {
+	strcat(f, "%s: ");
+	*ap++ = whoami;
+    }
+    if(code) {
+	strcat(f, "%s ");
+	*ap++ = error_message(code);
+    }
+    if(fmt) {
+	strcat(f, "%s");
+	*ap++ = fmt;
+    }
+    strcat(f, "\r\n");
+    asprintf(&x, f, arg[0], arg[1], arg[2]);
+    vfprintf(stderr, x, args);
+    free(x);
+    fflush(stderr);
+}
+
+static errf com_err_hook = default_proc;
+
+void 
+com_err_va (const char *whoami, 
+	    long code, 
+	    const char *fmt, 
+	    va_list args)
+{
+    (*com_err_hook) (whoami, code, fmt, args);
+}
+
+void
+com_err (const char *whoami,
+	 long code,
+	 const char *fmt, 
+	 ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    com_err_va (whoami, code, fmt, ap);
+    va_end(pvar);
+}
+
+errf
+set_com_err_hook (errf new)
+{
+    errf old = com_err_hook;
+
+    if (new)
+	com_err_hook = new;
+    else
+	com_err_hook = default_proc;
+    
+    return old;
+}
+
+errf
+reset_com_err_hook (void) 
+{
+    return set_com_err_hook(NULL);
+}