[1980] | 1 | #!/usr/bin/env perl |
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| 2 | #------------------------------------------------------------------------------- |
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| 3 | # (C) Crown copyright Met Office. All rights reserved. |
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| 4 | # For further details please refer to the file COPYRIGHT.txt |
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| 5 | # which you should have received as part of this distribution. |
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| 6 | #------------------------------------------------------------------------------- |
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| 7 | |
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| 8 | use strict; |
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| 9 | use warnings; |
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| 10 | |
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| 11 | use FindBin; |
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| 12 | use lib "$FindBin::Bin/../lib"; |
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| 13 | use Cwd qw{cwd}; |
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| 14 | use Getopt::Long qw{GetOptions}; |
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| 15 | use Fcm::Config; |
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| 16 | use Fcm::Keyword; |
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| 17 | use Fcm::Util qw{get_url_of_wc get_wct is_wc run_command tidy_url}; |
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| 18 | use File::Basename qw{basename dirname}; |
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| 19 | use File::Path qw{mkpath}; |
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| 20 | use File::Spec; |
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| 21 | use Pod::Usage qw{pod2usage}; |
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| 22 | |
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| 23 | # Usage |
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| 24 | # ------------------------------------------------------------------------------ |
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| 25 | my $this = basename($0); |
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| 26 | |
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| 27 | # Options |
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| 28 | # ------------------------------------------------------------------------------ |
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| 29 | my ($dest, $full, $help, $url); |
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| 30 | my $rc = GetOptions( |
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| 31 | 'dest|d=s' => \$dest, |
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| 32 | 'full|f' => \$full, |
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| 33 | 'help' => \$help, |
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| 34 | 'url|u=s' => \$url, |
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| 35 | ); |
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| 36 | if (!$rc) { |
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| 37 | pod2usage({'-verbose' => 1}); |
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| 38 | } |
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| 39 | if ($help) { |
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| 40 | pod2usage({'-exitval' => 0, '-verbose' => 1}); |
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| 41 | } |
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| 42 | if (!$url) { |
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| 43 | pod2usage( |
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| 44 | {'-message' => 'The --url=URL option is compulsory', '-verbose' => 1}, |
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| 45 | ); |
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| 46 | } |
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| 47 | $dest ||= cwd(); |
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| 48 | |
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| 49 | # Arguments |
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| 50 | # ------------------------------------------------------------------------------ |
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| 51 | if (@ARGV) { |
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| 52 | die 'Cannot read: ', $ARGV[0], ', abort' unless -f $ARGV[0] and -r $ARGV[0]; |
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| 53 | } |
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| 54 | |
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| 55 | # Get configuration settings |
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| 56 | # ------------------------------------------------------------------------------ |
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| 57 | my $config = Fcm::Config->new (); |
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| 58 | $config->get_config (); |
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| 59 | |
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| 60 | # Expand URL keyword |
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| 61 | $url = Fcm::Util::tidy_url(Fcm::Keyword::expand($url)); |
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| 62 | |
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| 63 | # ------------------------------------------------------------------------------ |
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| 64 | |
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| 65 | MAIN: { |
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| 66 | my $date = localtime; |
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| 67 | print $this, ': started on ', $date, "\n"; |
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| 68 | |
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| 69 | my %dirs; |
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| 70 | |
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| 71 | # Read input (file) for a list directories and update conditions |
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| 72 | while (<>) { |
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| 73 | chomp; |
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| 74 | |
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| 75 | # Ignore empty and comment lines |
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| 76 | next if /^\s*(?:#|$)/; |
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| 77 | |
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| 78 | # Each line must contain a relative path, and optionally a list of |
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| 79 | # space delimited conditions |
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| 80 | my @words = split /\s+/; |
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| 81 | my $dir = shift @words; |
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| 82 | |
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| 83 | # Check that the conditions are valid |
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| 84 | my @conditions; |
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| 85 | for my $word (@words) { |
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| 86 | if ($word =~ /^([<>]=?|[!=]=)(.+)$/i) { |
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| 87 | # Condition must be a conditional operator followed by a revision |
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| 88 | my ($operator, $rev) = ($1, $2); |
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| 89 | $rev = (Fcm::Keyword::expand($url, $rev))[1]; |
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| 90 | push @conditions, $operator . $rev; |
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| 91 | |
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| 92 | } else { |
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| 93 | print STDERR 'Warning: ignore unknown syntax for update condition: ', |
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| 94 | $word, "\n"; |
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| 95 | } |
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| 96 | } |
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| 97 | |
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| 98 | # Add directory and its conditions to a hash |
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| 99 | if ($dir =~ s#/\*$##) { # Directory finishes with wildcard |
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| 100 | |
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| 101 | # Run "svn ls" in recursive mode |
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| 102 | my $dirurl = join ('/', ($url, $dir)); |
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| 103 | my @files = &run_command ([qw/svn ls -R/, $dirurl], METHOD => 'qx'); |
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| 104 | |
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| 105 | # Find directories containing regular files |
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| 106 | while (my $file = shift @files) { |
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| 107 | # Skip directories |
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| 108 | next if $file =~ m#/$#; |
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| 109 | |
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| 110 | # Get "dirname" of regular file and add to hash |
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| 111 | my $subdir = join ('/', ($dir, dirname ($file))); |
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| 112 | $dirs{$subdir} = \@conditions; |
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| 113 | } |
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| 114 | |
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| 115 | } else { |
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| 116 | $dirs{$dir} = \@conditions; |
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| 117 | } |
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| 118 | |
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| 119 | } |
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| 120 | |
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| 121 | # Update each directory, if required |
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| 122 | for my $dir (sort keys %dirs) { |
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| 123 | # Use "svn log" to determine the revisions that need to be updated |
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| 124 | my %allversions; |
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| 125 | { |
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| 126 | my $command = 'svn log -q ' . join ('/', ($url, $dir)); |
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| 127 | my @log = &run_command ( |
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| 128 | [qw/svn log -q/, join ('/', ($url, $dir))], METHOD => 'qx', |
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| 129 | ); |
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| 130 | @log = grep /^r\d+/, @log; |
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| 131 | |
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| 132 | # Assign a sequential "version" number to each sub-directory |
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| 133 | my $version = scalar @log; |
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| 134 | for (@log) { |
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| 135 | m/^r(\d+)/; |
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| 136 | $allversions{$1} = 'v' . $version--; |
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| 137 | } |
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| 138 | } |
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| 139 | my %versions = %allversions; |
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| 140 | |
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| 141 | # Extract only revisions matching the conditions |
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| 142 | if (@{ $dirs{$dir} }) { |
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| 143 | my @conditions = @{ $dirs{$dir} }; |
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| 144 | |
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| 145 | for my $condition (@conditions) { |
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| 146 | for my $rev (keys %versions) { |
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| 147 | delete $versions{$rev} unless eval ($rev . $condition); |
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| 148 | } |
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| 149 | } |
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| 150 | } |
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| 151 | |
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| 152 | # Destination directory |
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| 153 | my $dirpath = File::Spec->catfile ($dest, $dir); |
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| 154 | |
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| 155 | if (-d $dirpath) { |
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| 156 | if ($full or not keys %versions) { |
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| 157 | # Remove destination directory top, in full mode |
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| 158 | # or if there are no matching revisions |
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| 159 | &run_command ([qw/rm -rf/, $dirpath], PRINT => 1); |
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| 160 | |
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| 161 | } else { |
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| 162 | # Delete excluded revisions if they exist, in incremental mode |
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| 163 | if (opendir DIR, $dirpath) { |
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| 164 | while (my $rev = readdir 'DIR') { |
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| 165 | next unless $rev =~ /^\d+$/; |
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| 166 | |
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| 167 | if (not grep {$_ eq $rev} keys %versions) { |
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| 168 | my @command = (qw/rm -rf/, File::Spec->catfile ($dirpath, $rev)); |
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| 169 | &run_command (\@command, PRINT => 1); |
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| 170 | |
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| 171 | # Remove "version" symlink |
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| 172 | my $verlink = File::Spec->catfile ($dirpath, $allversions{$rev}); |
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| 173 | unlink $verlink if -l $verlink; |
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| 174 | } |
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| 175 | } |
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| 176 | closedir DIR; |
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| 177 | } |
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| 178 | } |
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| 179 | } |
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| 180 | |
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| 181 | # Create container directory of destination if it does not already exist |
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| 182 | if (keys %versions and not -d $dirpath) { |
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| 183 | print '-> mkdir -p ', $dirpath, "\n"; |
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| 184 | my $rc = mkpath $dirpath; |
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| 185 | die 'mkdir -p ', $dirpath, ' failed' unless $rc; |
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| 186 | } |
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| 187 | |
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| 188 | # Update each version directory that needs updating |
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| 189 | for my $rev (keys %versions) { |
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| 190 | my $revpath = File::Spec->catfile ($dest, $dir, $rev); |
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| 191 | |
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| 192 | # Create version directory if it does not exist |
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| 193 | if (not -e $revpath) { |
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| 194 | # Use "svn export" to create the version directory |
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| 195 | my @command = ( |
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| 196 | qw/svn export -q -r/, |
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| 197 | $rev, |
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| 198 | join ('/', ($url, $dir)), |
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| 199 | $revpath, |
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| 200 | ); |
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| 201 | |
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| 202 | &run_command (\@command, PRINT => 1); |
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| 203 | } |
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| 204 | |
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| 205 | # Create "version" symlink if necessary |
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| 206 | my $verlink = File::Spec->catfile ($dest, $dir, $versions{$rev}); |
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| 207 | symlink $rev, $verlink unless -l $verlink; |
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| 208 | } |
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| 209 | |
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| 210 | # Symbolic link to the "latest" version directory |
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| 211 | my $headlink = File::Spec->catfile ($dest, $dir, 'latest'); |
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| 212 | my $headrev = 0; |
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| 213 | for my $rev (keys %versions) { |
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| 214 | $headrev = $rev if $rev > $headrev; |
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| 215 | } |
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| 216 | |
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| 217 | if (-l $headlink) { |
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| 218 | # Remove old symbolic link if there is no revision to update or if it |
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| 219 | # does not point to the correct version directory |
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| 220 | my $org = readlink $headlink; |
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| 221 | unlink $headlink if (! $headrev or $org ne $headrev); |
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| 222 | } |
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| 223 | |
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| 224 | # (Re-)create the "latest" symbolic link, if necessary |
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| 225 | symlink $headrev, $headlink if ($headrev and not -l $headlink); |
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| 226 | } |
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| 227 | |
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| 228 | $date = localtime; |
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| 229 | print $this, ': finished normally on ', $date, "\n"; |
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| 230 | } |
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| 231 | |
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| 232 | __END__ |
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| 233 | |
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| 234 | =head1 NAME |
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| 235 | |
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| 236 | fcm_update_version_dir.pl |
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| 237 | |
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| 238 | =head1 SYNOPSIS |
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| 239 | |
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| 240 | fcm_update_version_dir.pl [OPTIONS] [CFGFILE] |
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| 241 | |
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| 242 | =head1 DESCRIPTION |
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| 243 | |
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| 244 | Update the version directories for a list of relative paths in the source |
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| 245 | repository URL. |
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| 246 | |
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| 247 | =head1 OPTIONS |
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| 248 | |
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| 249 | =over 4 |
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| 250 | |
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| 251 | =item --dest=DEST, -d DEST |
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| 252 | |
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| 253 | Specify a destination for the extraction. If not specified, the command extracts |
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| 254 | to the current working directory. |
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| 255 | |
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| 256 | =item --help, -h |
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| 257 | |
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| 258 | Print help and exit. |
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| 259 | |
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| 260 | =item --full, -f |
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| 261 | |
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| 262 | Specify the full mode. If not specified, the command runs in incremental mode. |
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| 263 | |
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| 264 | =item --url=URL, -u URL |
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| 265 | |
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| 266 | Specify the source repository URL. No default. |
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| 267 | |
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| 268 | =back |
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| 269 | |
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| 270 | =head1 ARGUMENTS |
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| 271 | |
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| 272 | A configuration file may be given to this command, or it will attempt to read |
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| 273 | from the standard input. Each line in the configuration must contain a relative |
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| 274 | path that resides under the given source repository URL. (Empty lines and lines |
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| 275 | beginning with a "#" are ignored.) Optionally, each relative path may be |
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| 276 | followed by a list of space separated "conditions". Each condition is a |
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| 277 | conditional operator (>, >=, <, <=, == or !=) followed by a revision number or |
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| 278 | the keyword HEAD. The command uses the revision log to determine the revisions |
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| 279 | at which the relative path has been updated in the source repository URL. If |
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| 280 | these revisions also satisfy the "conditions" set by the user, they will be |
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| 281 | considered in the extraction. In full mode, everything is re-extracted. In |
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| 282 | incremental mode, the version directories are only updated if they do not |
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| 283 | already exist. |
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| 284 | |
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| 285 | =head1 COPYRIGHT |
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| 286 | |
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| 287 | (C) Crown copyright Met Office. All rights reserved. |
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| 288 | |
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| 289 | =cut |
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