forked from epics_driver_modules/require
315 lines
9.7 KiB
Perl
Executable File
315 lines
9.7 KiB
Perl
Executable File
#!/usr/bin/env perl
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use warnings;
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use strict;
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use 5.010;
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use File::Glob qw/bsd_glob/;
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use IPC::Open3 qw/open3/;
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use Symbol qw/gensym/;
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# cvs status parsing state
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use constant {
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GLOBAL => 0,
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FILE => 1,
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SKIP => 2
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};
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my $version;
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my $debug = 0;
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# Check all files in top directory and all files specified explicitly in subdirectories
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my @files = glob("GNUmakefile makefile Makefile *.c *.cc *.cpp *.h *.dbd *.st *.stt *.gt");
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# perl glob keeps non-wildcard names even they don't match, which are removed manually.
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@files = grep(-f, @files);
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my @statusinfo;
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while (@ARGV) {
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my $arg = shift @ARGV;
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if ($arg eq "-d") {
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$debug = 1;
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} else {
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push @files, $arg;
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}
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}
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# concatenate the files list to one space separatd string
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my $files = join(' ', @files);
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sub check_output {
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my ($child_stdout, $child_stderr);
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$child_stderr = gensym();
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chomp(my $command = $_[0]);
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# start the child process capturing stdout and stderr
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my $child_pid = open3(undef, $child_stdout, $child_stderr, $command);
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# filehandles' bitmask for read
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my $out_set = '';
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vec($out_set, fileno($child_stdout), 1) = 1;
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vec($out_set, fileno($child_stderr), 1) = 1;
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my $num_bits = 2;
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# output and error from the child process
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my $output = '';
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my $error = '';
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while ($num_bits and select(my $rout=$out_set, undef, undef, 5)) {
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for my $fh ($child_stdout, $child_stderr) {
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next unless vec($rout, fileno($fh), 1);
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my $bytes_read = sysread($fh, my $line, 4096);
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if ($bytes_read) {
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if ($fh == $child_stdout) {
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$output .= $line;
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}
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elsif ($fh == $child_stdout) {
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$error .= $line;
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}
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}
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else {
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vec($out_set, fileno($fh), 1) = 0;
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$num_bits -= 1;
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}
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}
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}
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waitpid($child_pid, 0);
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die $error if $?;
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return split(/\n/, $output);
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}
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sub parse_cvs_output {
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my @output = @{$_[0]};
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my $scope = GLOBAL;
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my $file;
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my %rev;
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my %tag;
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my ($major, $minor, $patch);
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foreach my $line (@output) {
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chomp($line);
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if ($scope == SKIP) {
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if ($line =~ /=================/) {
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$scope = GLOBAL;
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}
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}
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elsif ($scope == FILE) {
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if ($line =~ /Working revision:/) {
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$rev{$file} = (split " ", $line)[2];
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}
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elsif ($line =~ /Sticky Tag:.*_([0-9]+)_([0-9]+)(_([0-9]+))?[ \t]+\(revision: /) {
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$major = $1;
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$minor = $2;
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$patch = $4 || 0;
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$tag{$file} = (split " ", $line)[2] . " (sticky)";
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$scope = SKIP;
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}
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elsif ($line =~ /_([0-9]+)_([0-9]+)(_([0-9]+))?[ \t]+\(revision: ([\.0-9]+)\)/) {
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if ($rev{$file} eq $5) {
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my $Major = $1;
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my $Minor = $2;
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my $Patch = $4 || 0;
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if (!defined($major) ||
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$Major > $major ||
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($Major == $major && ($Minor > $minor
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|| ($Minor == $minor && $Patch > $patch)))) {
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$major = $Major;
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$minor = $Minor;
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$patch = $Patch;
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$tag{$file} = (split " ", $line)[0];
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}
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}
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}
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elsif ($line =~ /=================/) {
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if (!defined($major)) {
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say STDERR "checking $file: revision $rev{$file} not tagged => version test";
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$version = "test";
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} else {
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say STDERR "checking $file: revision $rev{$file} tag $tag{$file} => version $major.$minor.$patch";
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if (!defined($version)) {
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$version = "$major.$minor.$patch";
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} else {
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if ($version ne "$major.$minor.$patch") {
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$version = "test";
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}
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}
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}
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$scope = GLOBAL;
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}
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}
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elsif ($scope == GLOBAL) {
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if ($line =~ /there is no version here/) {
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return;
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}
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elsif ($line =~ /cvs status: failed/) {
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say STDERR "Error: $line";
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return;
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}
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elsif ($line =~ /no such directory `(.*)'/) {
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say STDERR "checking directory $1: no so such directory";
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return;
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}
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elsif ($line =~ /cvs \[status aborted\]: there is no version here/) {
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return;
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}
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elsif ($line =~ /^File: (\S+)\s+Status: Up-to-date/) {
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$file = $1;
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$major = undef();
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$minor = undef();
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$patch = undef();
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$scope = FILE;
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}
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elsif ($line =~ /^File: (\S+)\s+Status: (.*)/) {
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$file = $1;
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say STDERR "checking $file: $2 => verson test";
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$version = "test";
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}
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elsif ($line =~ /^\? .*/) {
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$file = (split " ", $line)[1];
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say STDERR "checking $file: not in cvs => version test";
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$version = "test";
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}
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}
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}
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}
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sub parse_git_output {
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my @output = @{$_[0]};
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foreach my $line (@output) {
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chomp($line);
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if ($line =~ /fatal: Not a git repository/) {
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return;
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}
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elsif ($line =~ /^\?\? (.*)/) {
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say STDERR "$1: not in git => version test";
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$version = "test";
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}
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elsif ($line =~ /^ M (.*)/) {
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say STDERR "$1: locally modified => version test";
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$version = "test";
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}
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elsif ($line =~ /^D (.*)/) {
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say STDERR "$1: deleted (or renamed) but not committed => version test";
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$version = "test";
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}
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elsif ($line =~ /^ D (.*)/) {
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say STDERR "$1: locally deleted => version test";
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$version = "test";
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}
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elsif ($line =~ /^A (.*)/) {
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say STDERR "$1: locally added => version test";
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$version = "test";
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}
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elsif ($line =~ /^AM (.*)/) {
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say STDERR "$1: locally added and modified => version test";
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$version = "test";
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}
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elsif ($line =~ /^([ MADRCU][ MADRCU]) (.*)/) {
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say STDERR "$2: $1 (whatever that means) => version test";
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$version = "test";
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}
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elsif ($line =~ /fatal: No names found/) {
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say STDERR "no tag on this version => version test";
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$version = "test";
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}
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elsif ($line =~ /On branch/) {
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}
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elsif ($line =~ /^([0-9]+)\.([0-9]+)(\.([0-9]+))?$/) {
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my $major = $1;
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my $minor = $2;
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my $patch = $4 || "0";
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$version = "$major.$minor.$patch";
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say STDERR "checking tag $line => version $version";
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}
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elsif ($line =~ /[a-zA-Z]+[a-zA-Z0-9]*_([0-9]+)_([0-9]+)(_([0-9]+))?$/) {
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my $major = $1;
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my $minor = $2;
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my $patch = $4 || "0";
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$version = "$major.$minor.$patch";
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say STDERR "checking tag $line => version $version";
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}
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elsif ($line =~ /(.*[0-9]+[_.][0-9]+([_.][0-9]+)?)-([0-9]+)-g/) {
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$version = "test";
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my $s = $3 != 1 ? "s" : "";
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say STDERR "tag $1 is $3 commit$s old => version test";
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}
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elsif ($line =~ /Your branch is ahead of '(.*)\/(.*)'/) {
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say STDERR "branch \"$2\" not yet pushed to remote \"$1\" => version test";
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say STDERR "try: git push --tags $1 $2";
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$version = "test";
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}
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elsif ($line =~ /Your branch and '(.*)\/(.*)' have diverged/) {
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say STDERR "diverged branch \"$2\" not yet force-pushed to remote \"$1\" => version test";
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say STDERR "try: git push --force --tags $1 $2";
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$version = "test";
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}
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}
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}
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if ($debug) {
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say STDERR "checking $files";
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}
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eval {
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# fails if git command exits with error
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if ($debug) {
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say STDERR "git status --porcelain $files"
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}
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@statusinfo = check_output("git status --porcelain $files");
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parse_git_output(\@statusinfo);
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if ($version) {
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say $version;
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exit;
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}
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if ($debug) {
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say STDERR "git describe --tags HEAD";
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}
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@statusinfo = check_output("git describe --tags HEAD");
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parse_git_output(\@statusinfo);
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if (!defined($version)) {
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say STDERR "Could not find out version tag => version test";
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$version = "test";
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}
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if ($version ne "test") {
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if ($debug) {
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say STDERR "git status";
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}
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@statusinfo = check_output("git status");
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parse_git_output(\@statusinfo);
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}
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say $version;
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exit;
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};
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eval {
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# cvs bug: calling cvs status for files in other directories spoils status
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# information for local files.
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# fix: check local and non local files separately
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# fails if we have no cvs or server has a problem
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if ($debug) {
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say STDERR "cvs status -l -v $files;"
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}
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@statusinfo = check_output("cvs status -l -v $files");
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# mark the finsh of the last file for the parser
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push @statusinfo, "===================================================================";
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parse_cvs_output(\@statusinfo);
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if (!defined($version)) {
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say STDERR "Could not find out version tag => version test";
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$version = "test";
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}
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say $version;
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exit;
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};
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say STDERR "No repository found => version test";
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say "test";
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