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+/* sane - Scanner Access Now Easy.
+ Copyright (C) 1996, 1997 David Mosberger-Tang and Andreas Beck
+ This file is part of the SANE package.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ MA 02111-1307, USA.
+
+ As a special exception, the authors of SANE give permission for
+ additional uses of the libraries contained in this release of SANE.
+
+ The exception is that, if you link a SANE library with other files
+ to produce an executable, this does not by itself cause the
+ resulting executable to be covered by the GNU General Public
+ License. Your use of that executable is in no way restricted on
+ account of linking the SANE library code into it.
+
+ This exception does not, however, invalidate any other reasons why
+ the executable file might be covered by the GNU General Public
+ License.
+
+ If you submit changes to SANE to the maintainers to be included in
+ a subsequent release, you agree by submitting the changes that
+ those changes may be distributed with this exception intact.
+
+ If you write modifications of your own for SANE, it is your choice
+ whether to permit this exception to apply to your modifications.
+ If you do not wish that, delete this exception notice. */
+
+#include "../include/sane/config.h"
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <string.h>
+#include <stdarg.h>
+#ifdef HAVE_VSYSLOG
+#include <syslog.h>
+#endif
+#ifdef HAVE_OS2_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#include <sys/stat.h>
+
+#ifdef HAVE_OS2_H
+# define INCL_DOS
+# include <os2.h>
+#endif
+
+#define BACKEND_NAME sanei_debug
+#include "../include/sane/sanei_debug.h"
+
+/* If a frontend enables translations, the system toupper()
+ * call will use the LANG env var. We need to use ascii
+ * instead, so the debugging env var name matches the docs.
+ * This is a particular problem in Turkish, where 'i' does
+ * not capitalize to 'I' */
+char
+toupper_ascii (int c)
+{
+ if(c > 0x60 && c < 0x7b)
+ return c - 0x20;
+ return c;
+}
+
+void
+sanei_init_debug (const char * backend, int * var)
+{
+ char ch, buf[256] = "SANE_DEBUG_";
+ const char * val;
+ unsigned int i;
+
+ *var = 0;
+
+ for (i = 11; (ch = backend[i - 11]) != 0; ++i)
+ {
+ if (i >= sizeof (buf) - 1)
+ break;
+ buf[i] = toupper_ascii(ch);
+ }
+ buf[i] = '\0';
+
+ val = getenv (buf);
+
+ if (!val)
+ return;
+
+ *var = atoi (val);
+
+ DBG (0, "Setting debug level of %s to %d.\n", backend, *var);
+}
+
+void
+sanei_debug_msg
+ (int level, int max_level, const char *be, const char *fmt, va_list ap)
+{
+ char *msg;
+
+ if (max_level >= level)
+ {
+#ifdef S_IFSOCK
+ if ( 1 == isfdtype(fileno(stderr), S_IFSOCK) )
+ {
+ msg = (char *)malloc (sizeof(char) * (strlen(be) + strlen(fmt) + 4));
+ if (msg == NULL)
+ {
+ syslog (LOG_DEBUG, "[sanei_debug] malloc() failed\n");
+ vsyslog (LOG_DEBUG, fmt, ap);
+ }
+ else
+ {
+ sprintf (msg, "[%s] %s", be, fmt);
+ vsyslog(LOG_DEBUG, msg, ap);
+ free (msg);
+ }
+ }
+ else
+#endif
+ {
+ fprintf (stderr, "[%s] ", be);
+ vfprintf (stderr, fmt, ap);
+ }
+
+ }
+}
+
+#ifdef NDEBUG
+void
+sanei_debug_ndebug (int level, const char *fmt, ...)
+{
+ /* this function is never called */
+}
+#endif