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# mkstrtable.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, see <http://www.gnu.org/licenses/>.
#
# As a special exception, g10 Code GmbH gives unlimited permission to
# copy, distribute and modify the C source files that are the output
# of mkstrtable.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 mkstrtable.awk appear in them. The GNU
# General Public License (GPL) does govern all other use of the material
# that constitutes the mkstrtable.awk program.
#
# Certain portions of the mkstrtable.awk source text are designed to be
# copied (in certain cases, depending on the input) into the output of
# mkstrtable.awk. We call these the "data" portions. The rest of the
# mkstrtable.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 mkstrtable.awk
# released by g10 Code GmbH. When you make and distribute a modified version
# of mkstrtable.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 nr, <tab>, something, <tab>, msg)
# CODE2 ... MESSAGE2 (code nr, <tab>, something, <tab>, msg)
# ...
# CODEn ... MESSAGEn (code nr, <tab>, something, <tab>, msg)
# ... DEFAULT-MESSAGE (<tab>, something, <tab>, fall-back msg)
#
# 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.
#
# The field to be used is specified with the variable "textidx" on
# the command line. It defaults to 2.
#
# The variable nogettext can be set to 1 to suppress gettext markers.
#
# The variable prefix can be used to prepend a string to each message.
#
# The variable pkg_namespace can be used to prepend a string to each
# variable and macro name.
BEGIN {
FS = "[\t]+";
# cpos holds the current position in the message string.
cpos = 0;
# msg holds the number of messages.
msg = 0;
print "/* Output of mkstrtable.awk. DO NOT EDIT. */";
print "";
header = 1;
if (textidx == 0)
textidx = 2;
# nogettext can be set to 1 to suppress gettext noop markers.
}
/^#/ { next; }
header {
if ($1 ~ /^[0123456789]+$/)
{
print "/* The purpose of this complex string table is to produce";
print " optimal code with a minimum of relocations. */";
print "";
print "static const char " pkg_namespace "msgstr[] = ";
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).
if (last_msgstr)
{
if (nogettext)
print " \"" last_msgstr "\" \"\\0\"";
else
print " gettext_noop (\"" last_msgstr "\") \"\\0\"";
}
last_msgstr = prefix $textidx;
# Remember the error code and msgidx of each error message.
code[msg] = $1;
pos[msg] = cpos;
cpos += length (last_msgstr) + 1;
msg++;
if ($1 == "")
{
has_default = 1;
exit;
}
}
END {
if (has_default)
coded_msgs = msg - 1;
else
coded_msgs = msg;
if (nogettext)
print " \"" prefix last_msgstr "\";";
else
print " gettext_noop (\"" prefix last_msgstr "\");";
print "";
print "static const int " pkg_namespace "msgidx[] =";
print " {";
for (i = 0; i < coded_msgs; i++)
print " " pos[i] ",";
print " " pos[coded_msgs];
print " };";
print "";
print "#define " pkg_namespace "msgidxof(code) (0 ? -1 \\";
# Gather the ranges.
skip = code[0];
start = code[0];
stop = code[0];
for (i = 1; i < coded_msgs; 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 ") \\";
if (has_default)
print " : " stop + 1 " - " skip ")";
else
print " : -1)";
}
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