1# mkerrcodes.awk
2# Copyright (C) 2003, 2004 g10 Code GmbH
3# 
4# This program is free software; you can redistribute it and/or
5# modify it under the terms of the GNU General Public License as
6# published by the Free Software Foundation; either version 2 of
7# the License, or (at your option) any later version.
8#
9# This program is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY; without even the implied warranty of
11# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12# General Public License for more details.
13#
14# You should have received a copy of the GNU General Public License
15# along with this program; if not, write to the Free Software
16# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
17#
18# As a special exception, g10 Code GmbH gives unlimited permission to
19# copy, distribute and modify the C source files that are the output
20# of mkerrcodes.awk.  You need not follow the terms of the GNU General
21# Public License when using or distributing such scripts, even though
22# portions of the text of mkerrcodes.awk appear in them.  The GNU
23# General Public License (GPL) does govern all other use of the material
24# that constitutes the mkerrcodes.awk program.
25#
26# Certain portions of the mkerrcodes.awk source text are designed to be
27# copied (in certain cases, depending on the input) into the output of
28# mkerrcodes.awk.  We call these the "data" portions.  The rest of the
29# mkerrcodes.awk source text consists of comments plus executable code
30# that decides which of the data portions to output in any given case.
31# We call these comments and executable code the "non-data" portions.
32# mkerrcodes.h never copies any of the non-data portions into its output.
33#
34# This special exception to the GPL applies to versions of mkerrcodes.awk
35# released by g10 Code GmbH.  When you make and distribute a modified version
36# of mkerrcodes.awk, you may extend this special exception to the GPL to
37# apply to your modified version as well, *unless* your modified version
38# has the potential to copy into its output some of the text that was the
39# non-data portion of the version that you started with.  (In other words,
40# unless your change moves or copies text from the non-data portions to the
41# data portions.)  If your modification has such potential, you must delete
42# any notice of this special exception to the GPL from your modified version.
43
44# This script outputs an intermediate file that contains the following block
45# for each error value symbol in the input file (example for EINVAL):
46#
47# #ifdef EINVAL
48# EINVAL GPG_ERR_EINVAL
49# #endif
50#
51# The input file is a list of possible system errors in the column errnoidx
52# (defaults to 2).
53#
54# Comments (starting with # and ending at the end of the line) are removed,
55# as is trailing whitespace.
56
57BEGIN {
58  FS="[\t]+";
59  header = 1;
60  if (errnoidx == 0)
61    errnoidx = 2;
62
63  print "/* Output of mkerrcodes.awk.  DO NOT EDIT.  */";
64  print "";
65}
66
67/^#/ { next; }
68
69header {
70  if ($1 ~ /^[0-9]/)
71    {
72      print "#include <errno.h>";
73      print "#ifdef _WIN32";
74      print "#include <winsock2.h>";
75      print "#endif";
76       print "";
77      header = 0;
78    }
79  else
80    print;
81}
82
83!header {
84  sub (/\#.+/, "");
85  sub (/[ 	]+$/, ""); # Strip trailing space and tab characters.
86
87  if (/^$/)
88    next;
89
90    print "#ifdef " $errnoidx;
91    print $errnoidx "\tGPG_ERR_" $errnoidx;
92    print "#endif";
93    print "#ifdef WSA" $errnoidx;
94    print "WSA" $errnoidx "\tGPG_ERR_" $errnoidx;
95    print "#endif";
96}
97