usr/src/lib/libc/extract-copyright.sh

   1 #! /usr/bin/ksh
   2 #
   3 # This file and its contents are supplied under the terms of the
   4 # Common Development and Distribution License ("CDDL"), version 1.0.
   5 # You may only use this file in accordance with the terms version
   6 # 1.0 of the CDDL.
   7 #
   8 # A full copy of the text of the CDDL should have accompanied this
   9 # source.  A copy is of the CDDL is also available via the Internet
  10 # at http://www.illumos.org/license/CDDL.
  11 #
  12
  13 #
  14 # Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
  15 # Copyright 2014 Garett D'Amore <garrett@damore.org>
  16 # Copyright 2016 Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
  17 #
  18
  19 #
  20 # This extracts all the BSD copyrights (excluding the CDDL licenses)
  21 # for use in a THIRDPARTYLICENSE file.  It tries hard to avoid duplicates.
  22 #
  23
  24 typeset -A LICENSE
  25
  26 function dofile {
  27         typeset file
  28         typeset comment
  29         typeset license
  30         typeset line
  31         typeset copyr
  32         typeset block
  33         typeset -i i
  34
  35         typeset nl=$(print)
  36         file=$1 ; shift
  37
  38         comment=
  39         unset license
  40         unset block
  41         copyr=
  42
  43         cat $file | while IFS="" read line; do
  44                 if [[ "$line" == /* ]] ; then
  45                         comment=y
  46                         copyr=
  47                         block=
  48                         continue
  49                 fi
  50
  51                 if [[ -z $comment ]]; then
  52                         # not in a comment
  53                         continue
  54                 fi
  55
  56                 #
  57                 # We don't want to know about CDDL files.  They don't
  58                 # require an explicit THIRDPARTYLICENSE file.
  59                 #
  60                 if [[ "$line" == *CDDL* ]]
  61                 then
  62                         return
  63                 fi
  64
  65                 if [[ "$line" == *Copyright* ]]
  66                 then
  67                         copyr=y
  68                 fi
  69
  70                 if [[ "$line" != */ ]]
  71                 then
  72                         line="${line# \* }"
  73                         line="${line# \*}"
  74                         line="${line% \*/}"
  75                         # append to block array
  76                         block="${block}${line}"'\n'
  77                         continue
  78                 fi
  79
  80                 #
  81                 # We have reached the end of the comment now.
  82                 #
  83                 comment=
  84
  85                 # Check to see if we saw a copyright.
  86                 if [[ -z "$copyr" ]]; then
  87                         block=
  88                         continue
  89                 fi
  90                 license="${license}${block}"
  91                 block=
  92         done
  93
  94         if [[ -n "$license" ]]
  95         then
  96                 LICENSE["${license}"]="${LICENSE["${license}"]} $file"
  97         fi
  98 }
  99
 100 find "$@" -type f -name '*.[chs]' -print | sort | while read f
 101 do
 102         dofile $f
 103 done
 104
 105 for lic in "${!LICENSE[@]}"; do
 106         print "The following files from the C library:"
 107         for f in ${LICENSE[$lic]}; do
 108                 print "    $f"
 109         done
 110         print "are provided under the following terms:"
 111         print
 112         print "$lic"
 113 done