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# mkerrnos.awk
# Copyright (C) 2003, 2004 g10 Code GmbH
#
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# As a special exception, g10 Code GmbH gives unlimited permission to
# copy, distribute and modify the C source files that are the output
# of mkerrnos.awk. You need not follow the terms of the GNU General
# Public License when using or distributing such scripts, even though
# portions of the text of mkerrnos.awk appear in them. The GNU
# General Public License (GPL) does govern all other use of the material
# that constitutes the mkerrnos.awk program.
#
# Certain portions of the mkerrnos.awk source text are designed to be
# copied (in certain cases, depending on the input) into the output of
# mkerrnos.awk. We call these the "data" portions. The rest of the
# mkerrnos.awk source text consists of comments plus executable code
# that decides which of the data portions to output in any given case.
# We call these comments and executable code the "non-data" portions.
# mkerrnos.h never copies any of the non-data portions into its output.
#
# This special exception to the GPL applies to versions of mkerrnos.awk
# released by g10 Code GmbH. When you make and distribute a modified version
# of mkerrnos.awk, you may extend this special exception to the GPL to
# apply to your modified version as well, *unless* your modified version
# has the potential to copy into its output some of the text that was the
# non-data portion of the version that you started with. (In other words,
# unless your change moves or copies text from the non-data portions to the
# data portions.) If your modification has such potential, you must delete
# any notice of this special exception to the GPL from your modified version.
# This script outputs a source file that does define the following
# symbols:
#
# static const int err_code_to_errno[];
# A mapping of gpg_err_code_t numbers to system errno. The index of an
# error code in the table can be obtained after removing the system error
# code indication bit.
#
# The input file is a list of possible system errors in the column errnoidx
# (defaults to 2).
#
# Comments (starting with # and ending at the end of the line) are removed,
# as is trailing whitespace.
BEGIN {
FS="[\t]+";
header = 1;
if (errnoidx == 0)
errnoidx = 2;
print "/* Output of mkerrnos.awk. DO NOT EDIT. */";
print "";
}
/^#/ { next; }
header {
if ($1 ~ /^[0-9]/)
{
print "#include <errno.h>";
print "";
print "static const int err_code_to_errno [] = {";
header = 0;
}
else
print;
}
!header {
sub (/\#.+/, "");
sub (/[ ]+$/, ""); # Strip trailing space and tab characters.
if (/^$/)
next;
print "#ifdef " $errnoidx;
print " " $errnoidx ",";
print "#else";
print " 0,";
print "#endif";
}
END {
print "};";
}
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