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# mkstrtable.awk
# Copyright (C) 2003 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 mkerrcodes2.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 mkerrcodes2.awk appear in them. The GNU
# General Public License (GPL) does govern all other use of the material
# that constitutes the mkerrcodes2.awk program.
#
# Certain portions of the mkerrcodes2.awk source text are designed to be
# copied (in certain cases, depending on the input) into the output of
# mkerrcodes2.awk. We call these the "data" portions. The rest of the
# mkerrcodes2.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.
# mkstrtable.h never copies any of the non-data portions into its output.
#
# This special exception to the GPL applies to versions of mkerrcodes2.awk
# released by g10 Code GmbH. When you make and distribute a modified version
# of mkerrcodes2.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 char msgstr[];
# A string containing all messages in the list.
#
# static const int msgidx[];
# A list of index numbers, one for each message, that points to the
# beginning of the string in msgstr.
#
# msgidxof (code);
# A macro that maps code numbers to idx numbers. If a DEFAULT MESSAGE
# is provided (see below), its index will be returned for unknown codes.
# Otherwise -1 is returned for codes that do not appear in the list.
# You can lookup the message with code CODE with:
# msgstr + msgidx[msgidxof (code)].
#
# The input file has the following format:
# CODE1 MESSAGE1 (Code number, <tab>, message string)
# CODE2 MESSAGE2 (Code number, <tab>, message string)
# ...
# CODEn MESSAGEn (Code number, <tab>, message string)
# DEFAULT MESSAGE (<tab>, fall-back message string)
#
# Comments (starting with # and ending at the end of the line) are removed,
# as is trailing whitespace. The last line is optional; if no DEFAULT
# MESSAGE is given, msgidxof will return the number -1 for unknown
# index numbers.
BEGIN {
# msg holds the number of messages.
msg = 0;
print "/* Output of mkerrcodes2.awk. DO NOT EDIT. */";
print "";
header = 1;
}
/^#/ { next; }
header {
if ($1 ~ /^[0123456789]+$/)
{
print "static const int err_code_from_index[] = {";
header = 0;
}
else
print;
}
!header {
sub (/\#.+/, "");
sub (/[ ]+$/, ""); # Strip trailing space and tab characters.
if (/^$/)
next;
# Print the string msgstr line by line. We delay output by one line to be able
# to treat the last line differently (see END).
print " " $2 ",";
# Remember the error value and index of each error code.
code[msg] = $1;
pos[msg] = $2;
msg++;
}
END {
print "};";
print "";
print "#define errno_to_idx(code) (0 ? -1 \\";
# Gather the ranges.
skip = code[0];
start = code[0];
stop = code[0];
for (i = 1; i < msg; i++)
{
if (code[i] == stop + 1)
stop++;
else
{
print " : ((code >= " start ") && (code <= " stop ")) ? (code - " \
skip ") \\";
skip += code[i] - stop - 1;
start = code[i];
stop = code[i];
}
}
print " : ((code >= " start ") && (code <= " stop ")) ? (code - " \
skip ") \\";
print " : -1)";
}
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