228 lines
6.0 KiB
Perl
228 lines
6.0 KiB
Perl
#!/usr/bin/perl -w
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use strict;
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=head1
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Generate a testament describing the current Git status. This gets written
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out in a C form which can be used to construct the NetSurf Git testament
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file for signon notification.
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If there is no Git in place, the data is invented arbitrarily.
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=cut
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$ENV{LC_ALL} = 'C';
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my $root = shift @ARGV;
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my $targetfile = shift @ARGV;
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my %gitinfo; # The Git information
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$root .= "/" unless ($root =~ m@/$@);
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my $git_present = 0;
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if ( -d ".git" ) {
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$git_present = 1;
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}
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sub compat_tmpnam {
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# File::Temp was introduced in Perl 5.6.1
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my $have_file_tmp = eval { require File::Temp };
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if ( ! $have_file_tmp ) {
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return "$$.gitt";
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} else {
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return File::Temp::tmpnam();
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}
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}
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sub compat_md5_hex {
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# Digest::MD5 was introduced in Perl 5.7.1
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my $have_digest_md5 = eval { require Digest::MD5 };
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my $have_md5 = eval { require MD5 };
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my $data = shift;
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if ( ! $have_digest_md5 ) {
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return MD5->hexhash($data);
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} else {
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return Digest::MD5->new->add($data)->hexdigest;
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}
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}
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sub gather_output {
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my $cmd = shift;
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my $tmpfile = compat_tmpnam();
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local $/ = undef();
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system("$cmd > $tmpfile");
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open(my $CMDH, "<", $tmpfile);
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my $ret = <$CMDH>;
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close($CMDH);
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unlink($tmpfile);
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return $ret;
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}
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if ( $git_present ) {
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my @bits = split /\s+/, `git config --get-regexp "^remote.*.url\$"`;
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$gitinfo{url} = $bits[1];
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chomp $gitinfo{url};
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$gitinfo{revision} = `git rev-parse HEAD`;
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chomp $gitinfo{revision};
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$gitinfo{branch} = `git for-each-ref --format="\%(refname:short)" \$(git symbolic-ref HEAD 2>/dev/null || git show-ref -s HEAD)`;
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chomp $gitinfo{branch};
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@bits = split /\s+/, `git describe --tags --exact-match HEAD 2>/dev/null`;
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$bits[0] = "" unless exists $bits[0];
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$gitinfo{tag} = $bits[0];
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$gitinfo{branch} = $gitinfo{tag} if ($gitinfo{tag} =~ m@.@);
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} else {
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$gitinfo{url} = "http://nowhere/tarball/";
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$gitinfo{revision} = "unknown";
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$gitinfo{branch} = "tarball";
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$gitinfo{tag} = "";
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}
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my %gitstatus; # The Git status output
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if ( $git_present ) {
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foreach my $line (split(/\n/, gather_output("git status --porcelain"))) {
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chomp $line;
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my ($X, $Y, $fp) = ($line =~ /^(.)(.) (.+)$/);
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my $fn = $fp;
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$fn = ($fp =~ /(.+) ->/) if ($fp =~ / -> /);
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next unless (care_about_file($fn));
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# Normalise $X and $Y (WT and index) into a simple A/M/D etc
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$gitstatus{$fn} = "$X$Y";
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}
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}
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my %userinfo; # The information about the current user
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{
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my @pwent = getpwuid($<);
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$userinfo{USERNAME} = $pwent[0];
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my $gecos = $pwent[6];
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$gecos =~ s/,.+//g;
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$gecos =~ s/"/'/g;
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$gecos =~ s/\\/\\\\/g;
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$userinfo{GECOS} = $gecos;
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}
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# The current date, in AmigaOS version friendly format (dd.mm.yyyy)
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my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime();
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my $compiledate = sprintf("%02d.%02d.%d",$mday,$mon+1,$year+1900);
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chomp $compiledate;
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# Spew the testament out
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my $testament = "";
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$testament .= "#define USERNAME \"$userinfo{USERNAME}\"\n";
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$testament .= "#define GECOS \"$userinfo{GECOS}\"\n";
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my $qroot = $root;
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$qroot =~ s/"/\\"/g;
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my $hostname = $ENV{HOSTNAME};
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unless ( defined($hostname) && $hostname ne "") {
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# Try hostname command if env-var empty
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$hostname = gather_output("hostname");
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chomp $hostname;
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}
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$hostname = "unknown-host" unless (defined($hostname) && $hostname ne "");
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$hostname =~ s/"/\\"/g;
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$testament .= "#define WT_ROOT \"$qroot\"\n";
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$testament .= "#define WT_HOSTNAME \"$hostname\"\n";
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$testament .= "#define WT_COMPILEDATE \"$compiledate\"\n";
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my $cibuild = $ENV{CI_BUILD};
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if (defined ($cibuild) && ($cibuild ne '')) {
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$testament .= "#define CI_BUILD \"$cibuild\"\n";
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}
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$testament .= "#define WT_BRANCHPATH \"$gitinfo{branch}\"\n";
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if ($gitinfo{branch} =~ m@^master$@) {
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$testament .= "#define WT_BRANCHISMASTER 1\n";
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}
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if ($gitinfo{tag} =~ m@.@) {
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$testament .= "#define WT_BRANCHISTAG 1\n";
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$testament .= "#define WT_TAGIS \"$gitinfo{tag}\"\n";
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}
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if ($gitinfo{url} =~ m@/tarball/@) {
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$testament .= "#define WT_NO_GIT 1\n";
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}
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$testament .= "#define WT_REVID \"$gitinfo{revision}\"\n";
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$testament .= "#define WT_MODIFIED " . scalar(keys %gitstatus) . "\n";
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$testament .= "#define WT_MODIFICATIONS {\\\n";
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my $doneone = 0;
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foreach my $filename (sort keys %gitstatus) {
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if ($doneone) {
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$testament .= ", \\\n";
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}
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$testament .= " { \"$filename\", \"$gitstatus{$filename}\" }";
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$doneone = 1;
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}
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$testament .= " \\\n}\n";
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my $oldcsum = "";
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if ( -e $targetfile ) {
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open(my $OLDVALUES, "<", $targetfile);
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foreach my $line (readline($OLDVALUES)) {
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if ($line =~ /MD5:([0-9a-f]+)/) {
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$oldcsum = $1;
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}
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}
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close($OLDVALUES);
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}
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my $newcsum = compat_md5_hex($testament);
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if ($oldcsum ne $newcsum) {
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print "TESTMENT: $targetfile\n";
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open(my $NEWVALUES, ">", $targetfile) or die "$!";
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print $NEWVALUES "/* ", $targetfile,"\n";
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print $NEWVALUES <<'EOS';
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*
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* Revision testament.
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*
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* *WARNING* this file is automatically generated by git-testament.pl
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*
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* Copyright 2012 NetSurf Browser Project
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*/
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EOS
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print $NEWVALUES "#ifndef NETSURF_REVISION_TESTAMENT\n";
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print $NEWVALUES "#define NETSURF_REVISION_TESTAMENT \"$newcsum\"\n\n";
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print $NEWVALUES "/* Revision testament checksum:\n";
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print $NEWVALUES " * MD5:", $newcsum,"\n */\n\n";
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print $NEWVALUES "/* Revision testament: */\n";
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print $NEWVALUES $testament;
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print $NEWVALUES "\n#endif\n";
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close($NEWVALUES);
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foreach my $unwanted (@ARGV) {
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next unless(-e $unwanted);
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print "TESTAMENT: Removing $unwanted\n";
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system("rm", "-f", "--", $unwanted);
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}
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} else {
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print "TESTMENT: unchanged\n";
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}
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exit 0;
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sub care_about_file {
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my ($fn) = @_;
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return 0 if ($fn =~ /\.d$/); # Don't care for extraneous DEP files
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return 0 if ($fn =~ /\.a$/); # Don't care for extraneous archive files
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return 0 if ($fn =~ /\.md5$/); # Don't care for md5sum files
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return 0 if ($fn =~ /\.map$/); # Don't care for map files
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return 0 if ($fn =~ /\.gitt$/); # Don't care for testament temp files
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return 1;
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}
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