305 lines
8.0 KiB
Perl
305 lines
8.0 KiB
Perl
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#! /usr/bin/perl
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#
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# Copyright 1998 Bruce A. Mah
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#
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# pkg_version.pl
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#
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# A package version-checking utility for FreeBSD.
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#
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# $FreeBSD$
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#
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use Getopt::Std;
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#
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# Configuration global variables
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#
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$Version = '0.1';
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$CurrentPackagesCommand = '/usr/sbin/pkg_info -aI';
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$CatProgram = "cat ";
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$FetchProgram = "fetch -o - ";
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#$indexFile = "ftp://ftp.freebsd.org/pub/FreeBSD/ports-current/INDEX";
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$IndexFile = 'file:/usr/ports/INDEX';
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$ShowCommandsFlag = 0;
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$DebugFlag = 0;
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$VerboseFlag = 0;
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$CommentChar = "#";
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#
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# CompareVersions
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#
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# Try to figure out the relationship between two program version numbers.
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# Detecting equality is easy, but determining order is a little difficult.
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# This function returns -1, 0, or 1, in the same manner as <=> or cmp.
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#
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sub CompareVersions {
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local($v1, $v2);
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$v1 = $_[0];
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$v2 = $_[1];
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# Short-cut in case of equality
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if ($v1 eq $v2) {
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return 0;
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}
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# Loop over different components (the parts separated by dots).
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# If any component differs, we have the basis for an inequality.
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while (1) {
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($p1, $v1) = split(/\./, $v1, 2);
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($p2, $v2) = split(/\./, $v2, 2);
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# If we\'re out of components, they\'re equal (this probably won\'t
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# happen, since the short-cut case above should get this).
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if (($p1 eq "") && ($p2 eq "")) {
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return 0;
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}
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# Check for numeric inequality. We assume here that (for example)
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# 3.09 < 3.10.
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elsif ($p1 != $p2) {
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return $p1 <=> $p2;
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}
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# Check for string inequality, given numeric equality. This
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# handles version numbers of the form 3.4j < 3.4k.
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elsif ($p1 ne $p2) {
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return $p1 cmp $p2;
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}
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}
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}
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#
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# GetNameAndVersion
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#
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# Get the name and version number of a package. Returns a two element
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# array, first element is name, second element is version number.
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#
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sub GetNameAndVersion {
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local($string);
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$string = $_[0];
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# If no hyphens then no version number
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return ($string, "") if $string !~ /-/;
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# Match (and group) everything in between two hyphens. Because the
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# regexp is 'greedy', the first .* will try and match everything up
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# to (but not including) the last hyphen
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$string =~ /(.*)-(.*)/;
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return ($1, $2);
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}
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#
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# PrintHelp
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#
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# Print usage information
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#
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sub PrintHelp {
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print <<"EOF"
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pkg_version $Version
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Bruce A. Mah <bmah\@ca.sandia.gov>
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Usage: pkg_version [-c] [-d debug] [-h] [-v] [index]
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-c Show commands to update installed packages
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-d debug Debugging output (debug controls level of output)
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-h Help (this message)
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-v Verbose output
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index URL or filename of index file
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(Default is $IndexFile)
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EOF
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}
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#
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# Parse command-line arguments, deal with them
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#
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if (!getopts('cdhv') || ($opt_h)) {
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&PrintHelp();
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exit;
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}
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if ($opt_c) {
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$ShowCommandsFlag = $opt_c;
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}
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if ($opt_d) {
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$DebugFlag = $opt_d;
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}
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if ($opt_v) {
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$VerboseFlag = 1;
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}
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if ($#ARGV >= 0) {
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$IndexFile = $ARGV[0];
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}
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# Gross hack to get around a bug in fetch(1). When PR bin/7203 gets fixed,
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# we can make a lot of this code go away...basically the problem is that
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# we can't depend on "fetch -o -" to do the right thing with files in the
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# filesystem.
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if ($IndexFile =~ s-^file:/-/-) {
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$IndexPackagesCommand = $CatProgram . $IndexFile;
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}
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elsif ($IndexFile =~ m-^(http|ftp)://-) {
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$IndexPackagesCommand = $FetchProgram . $IndexFile;
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}
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else {
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$IndexPackagesCommand = $CatProgram . $IndexFile;
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}
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#
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# Slurp in files
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#
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if ($DebugFlag) {
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print STDERR "$CurrentPackagesCommand\n";
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}
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open CURRENT, "$CurrentPackagesCommand|";
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while (<CURRENT>) {
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($packageString, $rest) = split;
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($packageName, $packageVersion) = &GetNameAndVersion($packageString);
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$currentPackages{$packageName}{'name'} = $packageName;
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if (defined $currentPackages{$packageName}{'version'}) {
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$currentPackages{$packageName}{'version'} .= "," . $packageVersion;
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}
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else {
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$currentPackages{$packageName}{'version'} = $packageVersion;
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}
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$currentPackages{$packageName}{'refcount'}++;
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}
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close CURRENT;
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if ($DebugFlag) {
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print STDERR "$IndexPackagesCommand\n";
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}
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open INDEX, "$IndexPackagesCommand|";
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while (<INDEX>) {
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($packageString, $packagePath, $rest) = split(/\|/);
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($packageName, $packageVersion) = &GetNameAndVersion($packageString);
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$indexPackages{$packageName}{'name'} = $packageName;
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$indexPackages{$packageName}{'path'} = $packagePath;
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if (defined $indexPackages{$packageName}{'version'}) {
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$indexPackages{$packageName}{'version'} .= "," . $packageVersion;
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}
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else {
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$indexPackages{$packageName}{'version'} = $packageVersion;
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}
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$indexPackages{$packageName}{'refcount'}++;
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}
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close INDEX;
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#
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# Produce reports
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#
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foreach $packageName (sort keys %currentPackages) {
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$~ = "STDOUT_VERBOSE" if $VerboseFlag;
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$~ = "STDOUT_COMMANDS" if $ShowCommandsFlag;
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$packageNameVer = "$packageName-$currentPackages{$packageName}{'version'}";
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if (defined $indexPackages{$packageName}{'version'}) {
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$indexVersion = $indexPackages{$packageName}{'version'};
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$currentVersion = $currentPackages{$packageName}{'version'};
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$indexRefcount = $indexPackages{$packageName}{'refcount'};
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$currentRefcount = $currentPackages{$packageName}{'refcount'};
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$packagePath = $indexPackages{$packageName}{'path'};
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if (($indexRefcount > 1) || ($currentRefcount > 1)) {
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$versionCode = "?";
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$Comment = "multiple versions (index has $indexVersion)";
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}
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else {
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$rc = &CompareVersions($currentVersion, $indexVersion);
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if ($rc == 0) {
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next if $ShowCommandsFlag;
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$versionCode = "=";
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$Comment = "up-to-date";
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}
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elsif ($rc < 0) {
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$versionCode = "<";
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$Comment = "needs updating (index has $indexVersion)"
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}
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elsif ($rc > 0) {
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next if $ShowCommandsFlag;
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$versionCode = ">";
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$Comment = "succeeds index (index has $indexVersion)";
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}
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else {
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$versionCode = "?";
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$Comment = "Comparison failed";
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}
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}
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}
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else {
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$versionCode = "?";
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$Comment = "unknown in index";
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}
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write;
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}
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exit 0;
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#
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# Formats
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#
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# $CommentChar is in the formats because you can't put a literal '#' in
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# a format specification
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# General report (no output flags)
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format STDOUT =
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@<<<<<<<<<<<<<<<<<<<<<<<<< @<
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$packageName, $versionCode
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.
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;
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# Verbose report (-v flag)
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format STDOUT_VERBOSE =
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@<<<<<<<<<<<<<<<<<<<<<<<<< @< @<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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$packageNameVer, $versionCode, $Comment
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.
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;
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# Report that includes commands to update program (-c flag)
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format STDOUT_COMMANDS =
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@<
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$CommentChar
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@< @<<<<<<<<<<<<<<<<<<<<<<<<
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$CommentChar, $packageName
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@< @<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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$CommentChar, $Comment
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@<
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$CommentChar
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cd @<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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$packagePath
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make
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pkg_delete -f @<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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$packageNameVer
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make install
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.
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;
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