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187 lines
6.1 KiB
187 lines
6.1 KiB
# mkstrtable.awk
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# Copyright (C) 2003, 2004 g10 Code GmbH
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; either version 2 of
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# the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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# As a special exception, g10 Code GmbH gives unlimited permission to
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# copy, distribute and modify the C source files that are the output
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# of mkstrtable.awk. You need not follow the terms of the GNU General
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# Public License when using or distributing such scripts, even though
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# portions of the text of mkstrtable.awk appear in them. The GNU
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# General Public License (GPL) does govern all other use of the material
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# that constitutes the mkstrtable.awk program.
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#
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# Certain portions of the mkstrtable.awk source text are designed to be
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# copied (in certain cases, depending on the input) into the output of
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# mkstrtable.awk. We call these the "data" portions. The rest of the
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# mkstrtable.awk source text consists of comments plus executable code
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# that decides which of the data portions to output in any given case.
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# We call these comments and executable code the "non-data" portions.
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# mkstrtable.h never copies any of the non-data portions into its output.
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#
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# This special exception to the GPL applies to versions of mkstrtable.awk
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# released by g10 Code GmbH. When you make and distribute a modified version
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# of mkstrtable.awk, you may extend this special exception to the GPL to
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# apply to your modified version as well, *unless* your modified version
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# has the potential to copy into its output some of the text that was the
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# non-data portion of the version that you started with. (In other words,
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# unless your change moves or copies text from the non-data portions to the
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# data portions.) If your modification has such potential, you must delete
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# any notice of this special exception to the GPL from your modified version.
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# This script outputs a source file that does define the following
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# symbols:
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#
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# static const char msgstr[];
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# A string containing all messages in the list.
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#
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# static const int msgidx[];
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# A list of index numbers, one for each message, that points to the
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# beginning of the string in msgstr.
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#
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# msgidxof (code);
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# A macro that maps code numbers to idx numbers. If a DEFAULT MESSAGE
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# is provided (see below), its index will be returned for unknown codes.
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# Otherwise -1 is returned for codes that do not appear in the list.
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# You can lookup the message with code CODE with:
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# msgstr + msgidx[msgidxof (code)].
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#
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# The input file has the following format:
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# CODE1 ... MESSAGE1 (code nr, <tab>, something, <tab>, msg)
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# CODE2 ... MESSAGE2 (code nr, <tab>, something, <tab>, msg)
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# ...
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# CODEn ... MESSAGEn (code nr, <tab>, something, <tab>, msg)
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# ... DEFAULT-MESSAGE (<tab>, something, <tab>, fall-back msg)
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#
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# Comments (starting with # and ending at the end of the line) are removed,
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# as is trailing whitespace. The last line is optional; if no DEFAULT
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# MESSAGE is given, msgidxof will return the number -1 for unknown
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# index numbers.
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#
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# The field to be used is specified with the variable "textidx" on
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# the command line. It defaults to 2.
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#
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# The variable nogettext can be set to 1 to suppress gettext markers.
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#
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# The variable prefix can be used to prepend a string to each message.
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#
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# The variable namespace can be used to prepend a string to each
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# variable and macro name.
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BEGIN {
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FS = "[\t]+";
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# cpos holds the current position in the message string.
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cpos = 0;
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# msg holds the number of messages.
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msg = 0;
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print "/* Output of mkstrtable.awk. DO NOT EDIT. */";
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print "";
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header = 1;
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if (textidx == 0)
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textidx = 2;
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# nogettext can be set to 1 to suppress gettext noop markers.
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}
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/^#/ { next; }
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header {
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if ($1 ~ /^[0123456789]+$/)
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{
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print "/* The purpose of this complex string table is to produce";
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print " optimal code with a minimum of relocations. */";
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print "";
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print "static const char " namespace "msgstr[] = ";
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header = 0;
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}
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else
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print;
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}
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!header {
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sub (/\#.+/, "");
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sub (/[ ]+$/, ""); # Strip trailing space and tab characters.
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if (/^$/)
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next;
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# Print the string msgstr line by line. We delay output by one line to be able
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# to treat the last line differently (see END).
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if (last_msgstr)
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{
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if (nogettext)
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print " \"" last_msgstr "\" \"\\0\"";
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else
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print " gettext_noop (\"" last_msgstr "\") \"\\0\"";
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}
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last_msgstr = prefix $textidx;
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# Remember the error code and msgidx of each error message.
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code[msg] = $1;
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pos[msg] = cpos;
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cpos += length (last_msgstr) + 1;
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msg++;
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if ($1 == "")
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{
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has_default = 1;
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exit;
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}
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}
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END {
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if (has_default)
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coded_msgs = msg - 1;
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else
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coded_msgs = msg;
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if (nogettext)
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print " \"" prefix last_msgstr "\";";
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else
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print " gettext_noop (\"" prefix last_msgstr "\");";
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print "";
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print "static const int " namespace "msgidx[] =";
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print " {";
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for (i = 0; i < coded_msgs; i++)
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print " " pos[i] ",";
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print " " pos[coded_msgs];
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print " };";
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print "";
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print "#define " namespace "msgidxof(code) (0 ? -1 \\";
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# Gather the ranges.
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skip = code[0];
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start = code[0];
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stop = code[0];
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for (i = 1; i < coded_msgs; i++)
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{
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if (code[i] == stop + 1)
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stop++;
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else
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{
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print " : ((code >= " start ") && (code <= " stop ")) ? (code - " \
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skip ") \\";
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skip += code[i] - stop - 1;
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start = code[i];
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stop = code[i];
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}
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}
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print " : ((code >= " start ") && (code <= " stop ")) ? (code - " \
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skip ") \\";
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if (has_default)
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print " : " stop + 1 " - " skip ")";
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else
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print " : -1)";
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}
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