mirror of
git://git.sv.gnu.org/coreutils.git
synced 2026-04-07 04:33:09 +02:00
488905a239
lines from the output strings, to save space. Use a narrower type like 'unsigned char' for line lengths, if that will do. Make the output variables static, not extern.
93 lines
2.3 KiB
Perl
Executable File
93 lines
2.3 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# -*- perl -*-
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eval 'exec /p/bin/perl -S $0 ${1+"$@"}'
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if 0;
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# dcgen -- generate C declarations of arrays of lines and line lengths
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# Copyright (C) 1996, 1998, 2004 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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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
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# GNU General Public License for more details.
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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., 59 Temple Place - Suite 330, Boston, MA
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# 02111-1307, USA.
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# written by Jim Meyering
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# If you uncomment the following lines, you should also do
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# s/chop/chomp and s/local/my/.
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#require 5.002;
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#use strict;
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# Convert an arbitrary file to dcl of two arrays.
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# One of lines, the other of lengths.
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local $prefix = 'G_';
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local @line;
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while (<>)
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{
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chop;
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s/[[:blank:]]*#.*//;
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if ($_)
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{
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push (@line, $_);
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}
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}
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local $n = @line;
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print "#define ${prefix}N_LINES $n\n\n";
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local $indent = ' ';
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local $i;
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local $max_line_length = 0;
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for ($i = 0; $i < @line; $i++)
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{
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local $len = length ($line[$i]);
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$max_line_length = $len if $max_line_length < $len;
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}
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local $line_length_type = 'unsigned char';
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if ((1 << 8) <= $max_line_length)
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{
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$line_length_type = 'unsigned short int';
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if ((1 << 16) <= $max_line_length)
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{
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$line_length_type = 'unsigned int';
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}
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}
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print "static $line_length_type const ${prefix}line_length[${prefix}N_LINES] =\n{\n$indent";
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local $ind = $indent;
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for ($i = 0; $i < @line; $i++)
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{
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local $comma = ($i < @line - 1 ? ',' : '');
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$ind = '' if $i == @line - 1;
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local $sep = ($i && $i % 18 == 0 || $i == @line - 1 ? "\n$ind" : ' ');
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print length ($line[$i]), $comma, $sep;
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}
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print "};\n\n";
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print "static char const *const ${prefix}line[${prefix}N_LINES] =\n{\n";
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while (1)
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{
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$_ = shift (@line);
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local $comma = (@line ? ',' : '');
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print "$indent\"$_\"$comma\n";
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last if !@line;
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}
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print "};\n";
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exit (0);
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