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#! /usr/bin/perl
#
# Copyright 1998 Bruce A. Mah
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# pkg_version.pl
#
# A package version-checking utility for FreeBSD.
#
# $FreeBSD$
#
use Getopt::Std;
#
# Configuration global variables
#
$Version = '0.1';
$CurrentPackagesCommand = '/usr/sbin/pkg_info -aI';
$CatProgram = "cat ";
$FetchProgram = "fetch -o - ";
#$IndexFile = "ftp://ftp.freebsd.org/pub/FreeBSD/branches/-current/ports/INDEX";
$IndexFile = '/usr/ports/INDEX';
$ShowCommandsFlag = 0;
$DebugFlag = 0;
$VerboseFlag = 0;
$CommentChar = "#";
$LimitFlag = "";
#
# CompareNumbers
#
# Try to figure out the relationship between two program version numbers.
# Detecting equality is easy, but determining order is a little difficult.
# This function returns -1, 0, or 1, in the same manner as <=> or cmp.
#
sub CompareNumbers {
local($v1, $v2);
$v1 = $_[0];
$v2 = $_[1];
# Short-cut in case of equality
if ($v1 eq $v2) {
return 0;
}
# Loop over different components (the parts separated by dots).
# If any component differs, we have the basis for an inequality.
while (1) {
($p1, $v1) = split(/\./, $v1, 2);
($p2, $v2) = split(/\./, $v2, 2);
# If we\'re out of components, they\'re equal (this probably won\'t
# happen, since the short-cut case above should get this).
if (($p1 eq "") && ($p2 eq "")) {
return 0;
}
# Check for numeric inequality. We assume here that (for example)
# 3.09 < 3.10.
elsif ($p1 != $p2) {
return $p1 <=> $p2;
}
# Check for string inequality, given numeric equality. This
# handles version numbers of the form 3.4j < 3.4k.
elsif ($p1 ne $p2) {
return $p1 cmp $p2;
}
}
}
#
# CompareVersions
#
# Try to figure out the relationship between two program "full
# versions", which is defined as the
# ${PORTVERSION}[_${PORTREVISION}][,${PORTEPOCH}]
# part of a package's name.
#
# Key points: ${PORTEPOCH} supercedes ${PORTVERSION}
# supercedes ${PORTREVISION}. See the commit log for revision
# 1.349 of ports/Mk/bsd.port.mk for more information.
#
sub CompareVersions {
local($fv1, $fv2, $v1, $v2, $v1, $r2, $e1, $e2, $rc);
$fv1 = $_[0];
$fv2 = $_[1];
# Shortcut check for equality before invoking the parsing
# routines.
if ($fv1 eq $fv2) {
return 0;
}
else {
($v1, $r1, $e1) = &GetVersionComponents($fv1);
($v2, $r2, $e2) = &GetVersionComponents($fv2);
# Check epoch, port version, and port revision, in that
# order.
$rc = &CompareNumbers($e1, $e2);
if ($rc == 0) {
$rc = &CompareNumbers($v1, $v2);
if ($rc == 0) {
$rc = &CompareNumbers($r1, $r2);
}
}
return $rc;
}
}
#
# GetVersionComponents
#
# Parse out the version number, revision number, and epoch number
# of a port's version string and return them as a three-element array.
#
# Syntax is: ${PORTVERSION}[_${PORTREVISION}][,${PORTEPOCH}]
#
sub GetVersionComponents {
local ($fullversion, $version, $revision, $epoch);
$fullversion = $_[0];
$fullversion =~ /([^_,]+)/;
$version = $1;
if ($fullversion =~ /_([^_,]+)/) {
$revision = $1;
}
if ($fullversion =~ /,([^_,]+)/) {
$epoch = $1;
}
return($version, $revision, $epoch);
}
#
# GetNameAndVersion
#
# Get the name and version number of a package. Returns a two element
# array, first element is name, second element is full version string.,
#
sub GetNameAndVersion {
local($fullname, $name, $fullversion);
$fullname = $_[0];
# If no hyphens then no version numbers
return ($fullname, "", "", "", "") if $fullname !~ /-/;
# Match (and group) everything after hyphen(s). Because the
# regexp is 'greedy', the first .* will try and match everything up
# to (but not including) the last hyphen
$fullname =~ /(.+)-(.+)/;
$name = $1;
$fullversion = $2;
return ($name, $fullversion);
}
#
# PrintHelp
#
# Print usage information
#
sub PrintHelp {
print <<"EOF"
pkg_version $Version
Bruce A. Mah <bmah\@freebsd.org>
Usage: pkg_version [-c] [-d debug] [-h] [-v] [index]
-c Show commands to update installed packages
-d debug Debugging output (debug controls level of output)
-h Help (this message)
-l limchar Limit output
-v Verbose output
index URL or filename of index file
(Default is $IndexFile)
EOF
}
#
# Parse command-line arguments, deal with them
#
if (!getopts('cdhl:v') || ($opt_h)) {
&PrintHelp();
exit;
}
if ($opt_c) {
$ShowCommandsFlag = $opt_c;
$LimitFlag = "<?"; # note that if the user specifies -l, we
# deal with this *after* setting a default
# for $LimitFlag
}
if ($opt_d) {
$DebugFlag = $opt_d;
}
if ($opt_l) {
$LimitFlag = $opt_l;
}
if ($opt_v) {
$VerboseFlag = 1;
}
if ($#ARGV >= 0) {
$IndexFile = $ARGV[0];
}
# Determine what command to use to retrieve the index file.
if ($IndexFile =~ m-^((http|ftp)://|file:/)-) {
$IndexPackagesCommand = $FetchProgram . $IndexFile;
}
else {
$IndexPackagesCommand = $CatProgram . $IndexFile;
}
#
# Slurp in files
#
if ($DebugFlag) {
print STDERR "$CurrentPackagesCommand\n";
}
open CURRENT, "$CurrentPackagesCommand|";
while (<CURRENT>) {
($packageString, $rest) = split;
($packageName, $packageFullversion) = &GetNameAndVersion($packageString);
$currentPackages{$packageName}{'name'} = $packageName;
if (defined $currentPackages{$packageName}{'fullversion'}) {
$currentPackages{$packageName}{'fullversion'} .= "|" . $packageFullversion;
}
else {
$currentPackages{$packageName}{'fullversion'} = $packageFullversion;
}
$currentPackages{$packageName}{'refcount'}++;
}
close CURRENT;
if ($DebugFlag) {
print STDERR "$IndexPackagesCommand\n";
}
open INDEX, "$IndexPackagesCommand|";
while (<INDEX>) {
($packageString, $packagePath, $rest) = split(/\|/);
($packageName, $packageFullversion) = &GetNameAndVersion($packageString);
$indexPackages{$packageName}{'name'} = $packageName;
$indexPackages{$packageName}{'path'} = $packagePath;
if (defined $indexPackages{$packageName}{'fullversion'}) {
$indexPackages{$packageName}{'fullversion'} .= "|" . $packageFullversion;
}
else {
$indexPackages{$packageName}{'fullversion'} = $packageFullversion;
}
$indexPackages{$packageName}{'refcount'}++;
}
close INDEX;
#
# Produce reports
#
# Prior versions of pkg_version used commas (",") as delimiters
# when there were multiple versions of a package installed.
# The new package version number syntax uses commas as well,
# so we've used vertical bars ("|") internally, and convert them
# to commas before we output anything so the reports look the
# same as they did before.
#
foreach $packageName (sort keys %currentPackages) {
$~ = "STDOUT_VERBOSE" if $VerboseFlag;
$~ = "STDOUT_COMMANDS" if $ShowCommandsFlag;
$packageNameVer = "$packageName-$currentPackages{$packageName}{'fullversion'}";
$packageNameVer =~ s/\|/,/g;
if (defined $indexPackages{$packageName}{'fullversion'}) {
$indexVersion = $indexPackages{$packageName}{'fullversion'};
$currentVersion = $currentPackages{$packageName}{'fullversion'};
$indexRefcount = $indexPackages{$packageName}{'refcount'};
$currentRefcount = $currentPackages{$packageName}{'refcount'};
$packagePath = $indexPackages{$packageName}{'path'};
if (($indexRefcount > 1) || ($currentRefcount > 1)) {
$versionCode = "*";
$Comment = "multiple versions (index has $indexVersion)";
$Comment =~ s/\|/,/g;
}
else {
# Do the comparison
$rc =
&CompareVersions($currentPackages{$packageName}{'fullversion'},
$indexPackages{$packageName}{'fullversion'});
if ($rc == 0) {
$versionCode = "=";
$Comment = "up-to-date";
}
elsif ($rc < 0) {
$versionCode = "<";
$Comment = "needs updating (index has $indexVersion)"
}
elsif ($rc > 0) {
$versionCode = ">";
$Comment = "succeeds index (index has $indexVersion)";
}
else {
$versionCode = "!";
$Comment = "Comparison failed";
}
}
}
else {
next if $ShowCommandsFlag;
$versionCode = "?";
$Comment = "unknown in index";
}
if ($LimitFlag) {
write if $versionCode =~ m/[$LimitFlag]/o;
} else {
write;
}
}
exit 0;
#
# Formats
#
# $CommentChar is in the formats because you can't put a literal '#' in
# a format specification
# General report (no output flags)
format STDOUT =
@<<<<<<<<<<<<<<<<<<<<<<<<< @<
$packageName, $versionCode
.
;
# Verbose report (-v flag)
format STDOUT_VERBOSE =
@<<<<<<<<<<<<<<<<<<<<<<<<< @< @<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
$packageNameVer, $versionCode, $Comment
.
;
# Report that includes commands to update program (-c flag)
format STDOUT_COMMANDS =
@<
$CommentChar
@< @<<<<<<<<<<<<<<<<<<<<<<<<
$CommentChar, $packageName
@< @<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
$CommentChar, $Comment
@<
$CommentChar
cd @<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
$packagePath
make && pkg_delete -f @<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
$packageNameVer
make install
.
;
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