libinstaller/bin2c.pl

   1 #!/usr/bin/perl
   2 ## -----------------------------------------------------------------------
   3 ##
   4 ##   Copyright 1998-2008 H. Peter Anvin - All Rights Reserved
   5 ##
   6 ##   This program is free software; you can redistribute it and/or modify
   7 ##   it under the terms of the GNU General Public License as published by
   8 ##   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
   9 ##   Boston MA 02111-1307, USA; either version 2 of the License, or
  10 ##   (at your option) any later version; incorporated herein by reference.
  11 ##
  12 ## -----------------------------------------------------------------------
  13
  14 #
  15 # bin2c.pl: binary file to C source converter
  16 #
  17
  18 eval { use bytes; };
  19 eval { binmode STDIN; };
  20
  21 ($table_name, $pad) = @ARGV;
  22
  23 if ( !defined($table_name) ) {
  24     print STDERR "Usage: $0 table_name [pad] < input_file > output_file\n";
  25     exit 1;
  26 }
  27
  28 $pad = 1 if ($pad < 1);
  29
  30 printf "unsigned char %s[] = {\n", $table_name;
  31
  32 $pos = 0;
  33 $linelen = 8;
  34
  35 $total_len = 0;
  36
  37 while ( ($n = read(STDIN, $data, 4096)) > 0 ) {
  38     $total_len += $n;
  39     for ( $i = 0 ; $i < $n ; $i++ ) {
  40         $byte = substr($data, $i, 1);
  41         if ( $pos >= $linelen ) {
  42             print ",\n\t";
  43             $pos = 0;
  44         } elsif ( $pos > 0 ) {
  45             print ", ";
  46         } else {
  47             print "\t";
  48         }
  49         printf("0x%02x", unpack("C", $byte));
  50         $pos++;
  51     }
  52 }
  53
  54 $align = $total_len % $pad;
  55 if ($align != 0) {
  56     $n = $pad - $align;
  57     $total_len += $n;
  58     for ( $i = 0 ; $i < $n ; $i++ ) {
  59         if ( $pos >= $linelen ) {
  60             print ",\n\t";
  61             $pos = 0;
  62         } elsif ( $pos > 0 ) {
  63             print ", ";
  64         } else {
  65             print "\t";
  66         }
  67         print '0x00';
  68         $pos++;
  69     }
  70 }
  71
  72 printf "\n};\n\nconst unsigned int %s_len = %u;\n", $table_name, $total_len;
  73
  74 if (defined $ENV{'SOURCE_DATE_EPOCH'}) {
  75     printf "\nconst int %s_mtime = %s;\n", $table_name, $ENV{'SOURCE_DATE_EPOCH'};
  76 } else {
  77     @st = stat STDIN;
  78     printf "\nconst int %s_mtime = %d;\n", $table_name, $st[9];
  79 }
  80
  81 exit 0;