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# -*- mode: makefile; coding: utf-8 -*-

# Copyright © 2005-2008 Jonas Smedegaard <dr@jones.dk>

# Description: Check for changes to copyright notices in source

#

# 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, 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, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

# 02111-1307 USA.

 

_cdbs_scripts_path ?= /usr/lib/cdbs

_cdbs_rules_path ?= /usr/share/cdbs/1/rules

_cdbs_class_path ?= /usr/share/cdbs/1/class

 

ifndef _cdbs_rules_copyright_check

_cdbs_rules_copyright_check := 1

 

include $(_cdbs_rules_path)/buildcore.mk$(_cdbs_makefile_suffix)

 

CDBS_BUILD_DEPENDS := $(CDBS_BUILD_DEPENDS), devscripts (>= 2.10.7)

 

# Set to yes to fail on changed/new hints are found

#DEB_COPYRIGHT_CHECK_STRICT := yes

 

# Single regular expression for files to include or ignore

DEB_COPYRIGHT_CHECK_REGEX = .*

#DEB_COPYRIGHT_CHECK_IGNORE_REGEX = ^(debian/.*|(.*/)?config\.(guess|sub|rpath)(\..*)?)$

DEB_COPYRIGHT_CHECK_IGNORE_REGEX = ^debian/(changelog|copyright(|_hints|_newhints))$

 

pre-build:: debian/stamp-copyright-check

 

debian/stamp-copyright-check:

        @echo 'Scanning upstream source for new/changed copyright notices...'

        @echo debian/licensecheck -c '$(DEB_COPYRIGHT_CHECK_REGEX)' -r --copyright -i '$(DEB_COPYRIGHT_CHECK_IGNORE_REGEX)' * \

                "| some-output-filtering..."

 

# Perl in shell in make requires extra care:

#  * Single-quoting ('...') protects against shell expansion

#  * Double-dollar ($$) expands to plain dollar ($) in make

        @debian/licensecheck -c '$(DEB_COPYRIGHT_CHECK_REGEX)' -r --copyright -i '$(DEB_COPYRIGHT_CHECK_IGNORE_REGEX)' * \

                | LC_ALL=C perl -e \

        'print "Format-Specification: http://wiki.debian.org/Proposals/CopyrightFormat?action=recall&rev=XXX\n";'\

        'print "Upstream-Name: Untrusted draft - double-check copyrights yourself!\n\n";'\

        '$$n=0; while (<>) {'\

        '       s/[^[:print:]]//g;'\

        '       if (/^([^:\s][^:]+):[\s]+(\S.*?)\s*$$/) {'\

        '               $$files[$$n]{name}=$$1;'\

        '               $$files[$$n]{license}=$$2;'\

        '       };'\

        '       if (/^\s*\[Copyright:\s*(\S.*?)\s*\]/) {'\

        '               $$files[$$n]{copyright}=$$1;'\

        '       };'\

        '       /^$$/ and $$n++;'\

        '};'\

        'foreach $$file (@files) {'\

        '       $$file->{license} =~ s/\s*\(with incorrect FSF address\)//;'\

        '       $$file->{license} =~ s/\s+\(v([^)]+) or later\)/-$$1+/;'\

        '       $$file->{license} =~ s/\s+\(v([^)]+)\)/-$$1/;'\

        '       $$file->{license} =~ s/\s*(\*No copyright\*)\s*// and $$file->{copyright} = $$1;'\

        '       $$file->{license} =~ s/^\s*(GENERATED FILE)/UNKNOWN ($$1)/;'\

        '       $$file->{license} =~ s/\s+(GENERATED FILE)/ ($$1)/;'\

        '       $$file->{copyright} =~ s/(?<=(\b\d{4}))(?{$$y=$$^N})\s*[,-]\s*((??{$$y+1}))\b/-$$2/g;'\

        '       $$file->{copyright} =~ s/(?<=\b\d{4})\s*-\s*\d{4}(?=\s*-\s*(\d{4})\b)//g;'\

        '       $$file->{copyright} =~ s/\b(\d{4})\s+([\S^\d])/$$1, $$2/g;'\

        '       $$file->{copyright} =~ s/^\W*\s+\/\s+//g;'\

        '       $$file->{copyright} =~ s/\s+\/\s+\W*$$//;'\

        '       $$file->{copyright} =~ s/\s+\/\s+/\n\t/g;'\

        '       $$pattern = "$$file->{license} [$$file->{copyright}]";'\

        '       push @{ $$patternfiles{"$$pattern"} }, $$file->{name};'\

        '};'\

        'foreach $$pattern ( sort {'\

        '                       @{$$patternfiles{$$b}} <=> @{$$patternfiles{$$a}}'\

        '                       ||'\

        '                       $$a cmp $$b'\

        '               } keys %patternfiles ) {'\

        '       ($$license, $$copyright) = $$pattern =~ /(.*) \[(.*)\]/s;'\

        '       print "Files: ", join("\n\t", sort @{ $$patternfiles{$$pattern} }), "\n";'\

        '       print "Copyright: $$copyright\n";'\

        '       print "License: $$license\n\n";'\

        '};'\

                > debian/copyright_newhints

        @patterncount="`cat debian/copyright_newhints | sed 's/^[^:]*://' | LANG=C sort -u | grep . -c -`"; \

                echo "Found $$patterncount different copyright and licensing combinations."

        @if [ ! -f debian/copyright_hints ]; then touch debian/copyright_hints; fi

        @newstrings=`diff -u debian/copyright_hints debian/copyright_newhints | sed '1,2d' | egrep '^\+' - | sed 's/^\+//'`; \

                if [ -n "$$newstrings" ]; then \

                        echo "$(if $(DEB_COPYRIGHT_CHECK_STRICT),ERROR,WARNING): The following new or changed copyright notices discovered:"; \

                        echo; \

                        echo "$$newstrings"; \

                        echo; \

                        echo "To fix the situation please do the following:"; \

                        echo "  1) Investigate the above changes and update debian/copyright as needed"; \

                        echo "  2) Replace debian/copyright_hints with debian/copyright_newhints"; \

                        $(if $(DEB_COPYRIGHT_CHECK_STRICT),exit 1,:); \

                else \

                        echo 'No new copyright notices found - assuming no news is good news...'; \

                        rm -f debian/copyright_newhints; \

                fi

        touch $@

 

clean::

        rm -f debian/stamp-copyright-check

 

endif