From 5293e86e5185b959a442633c93445ecfde107d1e Mon Sep 17 00:00:00 2001 From: Kaz Kylheku Date: Sun, 17 Jul 2022 18:55:55 -0700 Subject: Implement -E option and header. The -E option is not passed through to the Awk implementation any more, which is not particularly useful, because the option resembles -f, and its argument requires likewise handling. We achieve the semantics that -E is equivalent to -f --. From the GNU Awk user's perspective, this is a regression in the semantics of -E which also has the effect of suppressing the processing of arguments which look like variable assignments. To make up for that, we provide the header which suppresses all implicit treatment of the remaining arguments. --- share/cppawk/include/safearg.h | 48 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 share/cppawk/include/safearg.h (limited to 'share') diff --git a/share/cppawk/include/safearg.h b/share/cppawk/include/safearg.h new file mode 100644 index 0000000..5016155 --- /dev/null +++ b/share/cppawk/include/safearg.h @@ -0,0 +1,48 @@ +// cppawk: C preprocessor wrapper around awk +// Copyright 2022 Kaz Kylheku +// +// BSD-2 License +// +// 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. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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. + +#ifndef __CPPAWK_SAFEARG_H +#define __CPPAWK_SAFEARG_H + +#ifndef __CPPAWK_BASE_H +#include "base.h" +#endif + +BEGIN { + for (__key in ARGV) { + argv[__key] = ARGV[__key] +#if !__gawk__ + delete ARGV[__key] +#endif + } + +#if __gawk__ + delete ARGV +#endif +} + +#endif -- cgit v1.2.3