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Diffstat (limited to 'zbar/debug.h')
| -rw-r--r-- | zbar/debug.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/zbar/debug.h b/zbar/debug.h new file mode 100644 index 0000000..a78419b --- /dev/null +++ b/zbar/debug.h @@ -0,0 +1,93 @@ +/*------------------------------------------------------------------------ + * Copyright 2007-2009 (c) Jeff Brown <spadix@users.sourceforge.net> + * + * This file is part of the ZBar Bar Code Reader. + * + * The ZBar Bar Code Reader is free software; you can redistribute it + * and/or modify it under the terms of the GNU Lesser Public License as + * published by the Free Software Foundation; either version 2.1 of + * the License, or (at your option) any later version. + * + * The ZBar Bar Code Reader 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 Lesser Public License for more details. + * + * You should have received a copy of the GNU Lesser Public License + * along with the ZBar Bar Code Reader; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301 USA + * + * http://sourceforge.net/projects/zbar + *------------------------------------------------------------------------*/ + +/* varargs variations on compile time debug spew */ + +#include <stdio.h> + +#ifndef DEBUG_LEVEL + +#ifdef __GNUC__ +/* older versions of gcc (< 2.95) require a named varargs parameter */ +#define dbprintf(args...) while (0) +#else +/* unfortunately named vararg parameter is a gcc-specific extension */ +#define dbprintf(...) while (0) +#endif + +#else + +#ifdef __GNUC__ +#define dbprintf(level, args...) \ + do { \ + if ((level) <= DEBUG_LEVEL) \ + fprintf(stderr, args); \ + } while (0) +#else +#define dbprintf(level, ...) \ + do { \ + if ((level) <= DEBUG_LEVEL) \ + fprintf(stderr, __VA_ARGS__); \ + } while (0) +#endif + +#endif /* DEBUG_LEVEL */ + +/* spew warnings for non-fatal assertions. + * returns specified error code if assertion fails. + * NB check/return is still performed for NDEBUG + * only the message is inhibited + * FIXME don't we need varargs hacks here? + */ +#ifndef NDEBUG + +#include <stdio.h> + +#if __STDC_VERSION__ < 199901L && !defined(__func__) +#if __GNUC__ >= 2 +#define __func__ __FUNCTION__ +#else +#define __func__ "<unknown>" +#endif +#endif + +#define zassert(condition, retval, format, ...) \ + do { \ + if (!(condition)) { \ + fprintf(stderr, \ + "WARNING: %s:%d: %s:" \ + " Assertion \"%s\" failed.\n\t" format, \ + __FILE__, __LINE__, __func__, #condition, ##__VA_ARGS__); \ + return (retval); \ + } \ + } while (0) + +#else + +#define zassert(condition, retval, format, ...) \ + do { \ + if (!(condition)) \ + return (retval); \ + } while (0) + +#endif |