Re: [PATCH] pakfire: implement function to parse meta files

["Peter Müller" <peter.mueller@ipfire.org>]

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Hello Robin,

again, sorry for the late reply. This patch looks good to me.

Reviewed-by: Peter Müller <peter.mueller(a)ipfire.org>

Thanks, and best regards,
Peter Müller


> Removing a lot of duplicate code parsing meta files, now replaced by
> simple function calls, resulting in all metadata in one hash.
> 
> Signed-off-by: Robin Roevens <robin.roevens(a)disroot.org>
> ---
>  src/pakfire/lib/functions.pl | 129 +++++++++++++----------------------
>  1 file changed, 49 insertions(+), 80 deletions(-)
> 
> diff --git a/src/pakfire/lib/functions.pl b/src/pakfire/lib/functions.pl
> index f9a19b60d..79ef7a12d 100644
> --- a/src/pakfire/lib/functions.pl
> +++ b/src/pakfire/lib/functions.pl
> @@ -2,7 +2,7 @@
>  ###############################################################################
>  #                                                                             #
>  # IPFire.org - A linux based firewall                                         #
> -# Copyright (C) 2007-2015   IPFire Team   <info(a)ipfire.org>                   #
> +# Copyright (C) 2007-2021   IPFire Team   <info(a)ipfire.org>                   #
>  #                                                                             #
>  # This program is free software: you can redistribute it and/or modify        #
>  # it under the terms of the GNU General Public License as published by        #
> @@ -376,11 +376,10 @@ sub dbgetlist {
>  	}
>  
>  	# Update the meta database if new packages was in the package list
> -	my @meta;
>  	my $file;
>  	my $line;
>  	my $prog;
> -	my ($name, $version, $release);
> +	my %metadata;
>  	my @templine;
>  
>  	open(FILE, "<$Conf::dbdir/lists/packages_list.db");
> @@ -395,28 +394,14 @@ sub dbgetlist {
>  		next if ( $file eq ".." );
>  		next if ( $file eq "meta-" );
>  		next if ( $file =~ /^old/ );
> -		open(FILE, "<$Conf::dbdir/meta/$file");
> -		@meta = <FILE>;
> -		close(FILE);
> -		foreach $line (@meta) {
> -			@templine = split(/\: /,$line);
> -			if ("$templine[0]" eq "Name") {
> -				$name = $templine[1];
> -				chomp($name);
> -			} elsif ("$templine[0]" eq "ProgVersion") {
> -				$version = $templine[1];
> -				chomp($version);
> -			} elsif ("$templine[0]" eq "Release") {
> -				$release = $templine[1];
> -				chomp($release);
> -			}
> -		}
> +		%metadata = parsemetafile("$Conf::dbdir/meta/$file");
> +
>  		foreach $prog (@db) {
>  			@templine = split(/\;/,$prog);
> -			if (("$name" eq "$templine[0]") && ("$release" ne "$templine[2]")) {
> -				move("$Conf::dbdir/meta/meta-$name","$Conf::dbdir/meta/old_meta-$name");
> -				fetchfile("meta/meta-$name", "");
> -				move("$Conf::cachedir/meta-$name", "$Conf::dbdir/meta/meta-$name");
> +			if (("$metadata{'Name'}" eq "$templine[0]") && ("$metadata{'Release'}" ne "$templine[2]")) {
> +				move("$Conf::dbdir/meta/meta-$metadata{'Name'}","$Conf::dbdir/meta/old_meta-$metadata{'Name'}");
> +				fetchfile("meta/meta-$metadata{'Name'}", "");
> +				move("$Conf::cachedir/meta-$metadata{'Name'}", "$Conf::dbdir/meta/meta-$metadata{'Name'}");
>  			}
>  		}
>  	}
> @@ -429,12 +414,11 @@ sub dblist {
>  	#   filter may be: all, notinstalled, installed
>  	my $filter = shift;
>  	my $forweb = shift;
> -	my @meta;
>  	my @updatepaks;
>  	my $file;
>  	my $line;
>  	my $prog;
> -	my ($name, $version, $release);
> +	my %metadata;
>  	my @templine;
>  	
>  	### Make sure that the list is not outdated. 
> @@ -470,30 +454,16 @@ sub dblist {
>  			next if ( $file eq "." );
>  			next if ( $file eq ".." );
>  			next if ( $file =~ /^old/ );
> -			open(FILE, "<$Conf::dbdir/installed/$file");
> -			@meta = <FILE>;
> -			close(FILE);
> -			foreach $line (@meta) {
> -				@templine = split(/\: /,$line);
> -				if ("$templine[0]" eq "Name") {
> -					$name = $templine[1];
> -					chomp($name);
> -				} elsif ("$templine[0]" eq "ProgVersion") {
> -					$version = $templine[1];
> -					chomp($version);
> -				} elsif ("$templine[0]" eq "Release") {
> -					$release = $templine[1];
> -					chomp($release);
> -				}
> -			}
> +			%metadata = parsemetafile("$Conf::dbdir/installed/$file");
> +
>  			foreach $prog (@db) {
>  				@templine = split(/\;/,$prog);
> -				if (("$name" eq "$templine[0]") && ("$release" < "$templine[2]" && "$forweb" ne "notice")) {
> -					push(@updatepaks,$name);
> +				if (("$metadata{'Name'}" eq "$templine[0]") && ("$metadata{'Release'}" < "$templine[2]" && "$forweb" ne "notice")) {
> +					push(@updatepaks,$metadata{'Name'});
>  					if ("$forweb" eq "forweb") {
> -						print "<option value=\"$name\">Update: $name -- Version: $version -> $templine[1] -- Release: $release -> $templine[2]</option>\n";
> +						print "<option value=\"$metadata{'Name'}\">Update: $metadata{'Name'} -- Version: $metadata{'ProgVersion'} -> $templine[1] -- Release: $metadata{'Release'} -> $templine[2]</option>\n";
>  					} else {
> -						my $command = "Update: $name\nVersion: $version -> $templine[1]\nRelease: $release -> $templine[2]\n";
> +						my $command = "Update: $metadata{'Name'}\nVersion: $metadata{'ProgVersion'} -> $templine[1]\nRelease: $metadata{'Release'} -> $templine[2]\n";
>  						if ("$Pakfire::enable_colors" eq "1") {
>  							print "$color{'lila'}$command$color{'normal'}\n";
>  						} else {
> @@ -548,18 +518,9 @@ sub resolvedeps_one {
>  	
>  	message("PAKFIRE RESV: $pak: Resolving dependencies...");
>  	
> -	open(FILE, "<$Conf::dbdir/meta/meta-$pak");
> -	my @file = <FILE>;
> -	close(FILE);
> -	
> -	my $line;
> -	my (@templine, @deps, @all);
> -	foreach $line (@file) {
> -		@templine = split(/\: /,$line);
> -		if ("$templine[0]" eq "Dependencies") {
> -			@deps = split(/ /, $templine[1]);
> -		}
> -	}
> +	my %metadata = parsemetafile("$Conf::dbdir/meta/meta-$pak");
> +	my @all;
> +	my @deps = split(/ /, $metadata{'Dependencies'});
>  	chomp (@deps);
>  	foreach (@deps) {
>  		if ($_) {
> @@ -679,20 +640,40 @@ sub getsize {
>  	
>  	getmetafile("$pak");
>  	
> -	open(FILE, "<$Conf::dbdir/meta/meta-$pak");
> -	my @file = <FILE>;
> +	if (my %metadata = parsemetafile("$Conf::dbdir/meta/meta-$pak")) {
> +		return $metadata{'Size'};
> +	}
> +	return 0;
> +}
> +
> +sub parsemetafile {
> +	### This subroutine returns a hash with the contents of a meta- file
> +	#   Pass path to metafile as argument: Pakfire::parsemetafile("$Conf::dbdir/meta/meta-$pak")
> +	#   Usage is always with an argument.
> +	my $metafile = shift;
> +
> +	my %metadata = ();
> +
> +	my @templine;
> +	my @file;
> +
> +	if (! -e $metafile ) {
> +		return 0;
> +	}
> +
> +	open(FILE, "<$metafile");
> +	@file = <FILE>;
>  	close(FILE);
>  	
> -	my $line;
> -	my @templine;
> -	foreach $line (@file) {
> -		@templine = split(/\: /,$line);
> -		if ("$templine[0]" eq "Size") {
> +	foreach (@file) {
> +		@templine = split(/\: /,$_);
> +		if ($templine[1]) {
>  			chomp($templine[1]);
> -			return $templine[1];
> +			$metadata{"$templine[0]"} = $templine[1];
>  		}
>  	}
> -	return 0;
> +
> +	return %metadata;
>  }
>  
>  sub decryptpak {
> @@ -715,20 +696,8 @@ sub getpak {
>  
>  	getmetafile("$pak");
>  	
> -	open(FILE, "<$Conf::dbdir/meta/meta-$pak");
> -	my @file = <FILE>;
> -	close(FILE);
> -	
> -	my $line;
> -	my $file;
> -	my @templine;
> -	foreach $line (@file) {
> -		@templine = split(/\: /,$line);
> -		if ("$templine[0]" eq "File") {
> -			chomp($templine[1]);
> -			$file = $templine[1];
> -		}
> -	}
> +	my %metadata = parsemetafile("$Conf::dbdir/meta/meta-$pak");
> +	my $file = $metadata{'File'};
>  	
>  	unless ($file) {
>  		message("No filename given in meta-file.");