#!/usr/bin/perl

# $Id$

#- Copyright (C) 2002, 2003, 2004, 2005 Mandriva
#-
#- 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
#- the Free Software Foundation; either version 2, or (at your option)
#- any later version.
#-
#- This program is distributed in the hope that it will be useful,
#- but WITHOUT ANY WARRANTY; without even the implied warranty of
#- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#- GNU General Public License for more details.
#-
#- You should have received a copy of the GNU General Public License
#- along with this program; if not, write to the Free Software
#- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

use strict;
use urpm;
use urpm::args;
use urpm::msg;

sub usage {
    print N("urpmf version %s
Copyright (C) 2002-2005 Mandriva.
This is free software and may be redistributed under the terms of the GNU GPL.

usage:
", $urpm::VERSION) . N("  --help         - print this help message
") . N("  --all          - print all tags
") . N("  --arch         - print architecture
") . N("  --buildhost    - print build host
") . N("  --buildtime    - print build time
") . N("  --conffiles    - print configuration files
") . N("  --conflicts    - print conflict tags
") . N("  --distribution - print distribution
") . N("  --description  - print package description
") . N("  --env          - use specific environment (typically a bug report)
") . N("  --epoch        - print epoch
") . N("  --excludemedia - do not use the given media, separated by comma
") . N("  --files        - print the package's files
") . N("  --group        - print group
") . N("  --literal      - don't match patterns, but use argument as a literal string
") . N("  --media        - use only the given media, separated by comma
") . N("  --name         - print only package names
") . N("  --obsoletes    - print obsoletes tags
") . N("  --packager     - print packager
") . N("  --provides     - print provides tags
") . N("  --requires     - print requires tags
") . N("  --size         - print installed size
") . N("  --sortmedia    - sort media according to substrings separated by comma
") . N("  --sourcerpm    - print source rpm name
") . N("  --summary      - print summary
") . N("  --synthesis    - use the synthesis given instead of urpmi db
") . N("  --uniq         - do not print identical lines
") . N("  --update       - use only update media
") . N("  --url          - print url
") . N("  --vendor       - print vendor
") . N("  --verbose      - verbose mode
") . N("  -m             - print the media in which the package was found
") . N("  -i             - ignore case distinctions in every pattern
") . N("  -f             - print version, release and arch with name
") . N("  -e             - include perl code directly as perl -e
") . N("  -a             - binary AND operator, true if both expression are true
") . N("  -o             - binary OR operator, true if one expression is true
") . N("  !              - unary NOT, true if expression is false
") . N("  (              - left parenthesis to open group expression
") . N("  )              - right parenthesis to close group expression
");
    exit(0);
}

#- default options.
our $update = 0;
our $media = '';
our $excludemedia = '';
our $sortmedia = '';
our $synthesis = '';
our $verbose = 0;
our $uniq = '';
our $pattern = ''; # regexp match flags ("i" or "")
our $full = ''; # -f : print rpm fullname instead of rpm name
our $literal = 0; # should we quotemeta the pattern
our $qf = '%name';
our $env;
our (%params, %uniq);

#- parse arguments list.
our $expr;
urpm::args::parse_cmdline();
if ($full) { $qf =~ s/%name\b/%fullname/ }

my $urpm = new urpm;
$verbose or $urpm->{log} = sub {};

if ($qf eq '%name') {
    #- nothing on the command-line : default is to search on file names
    $qf = '%name:%files';
    $params{files} = 1;
}

#- build the callback matching the expression.
#- XXX it would be nice to use "my $_" in this callback.
my $callback = qq<sub {
    my (\$urpm, \$pkg) = \@_;
    local *_; \$_ = sprintf(qq{$qf\\n}>;
my $sprintfargs = '';
while ($callback =~ /%[-\d]*(\w+)/g) {
    my $tag = $1;
    if ($tag eq 'media') {
	$sprintfargs .= ', $urpm::currentmedia->{name}';
    } elsif ($tag eq 'fullname') {
	$sprintfargs .= ', scalar($pkg->fullname)';
    } else {
	$sprintfargs .= ', $pkg->' . $tag;
    }
}
$callback =~ s/%([-\d]*)(\w+)/%${1}s/g;
$uniq and $uniq = "\n" . '    $uniq{$_} and return 1; $uniq{$_} = 1;';
$callback .= qq<$sprintfargs);
    $expr or return 1;$uniq
    print;
    1;
}>;
$urpm->{error}("qf:[$qf]\ncallback:\n$callback") if our $debug;
$callback = eval $callback;
if ($@) {
    $debug and warn "Internal error: $@\n";
    usage;
}

if ($env) {
    print STDERR N("using specific environment on %s\n", $env);
    #- setting new environment.
    $urpm->{config} = "$env/urpmi.cfg";
    $urpm->{skiplist} = "$env/skip.list";
    $urpm->{instlist} = "$env/inst.list";
    $urpm->{statedir} = $env;
}

{
    #- lock to avoid concurrent media updates,
    #- but don't die if it doesn't work
    local $urpm->{fatal} = sub { printf STDERR "%s\n", $_[0] };
    $urpm->shlock_urpmi_db;
}
my $use_hdlist = scalar grep { $params{$_} } qw(
    buildhost
    buildtime
    conf_files
    description
    distribution
    files
    packager
    sourcerpm
    url
    vendor
);
$urpm->configure(
    nocheck_access => 1,
    noskipping => 1,
    media => $media,
    excludemedia => $excludemedia,
    sortmedia => $sortmedia,
    synthesis => $synthesis,
    update => $update,
    callback => $callback,
    call_back_only_once => 1,
    hdlist => $use_hdlist,
);
$urpm->unlock_urpmi_db;

if ($use_hdlist) {
    # @hdmedia is the list of all media searched that use hdlists
    my @hdmedia = grep {
	!$_->{synthesis} && !$_->{removable} && !$_->{ignore};
    } @{ $urpm->{media} };
    if (!@hdmedia) {
	print N("Note: since no media searched uses hdlists, urpmf was unable to return any result\n");
	print N("You may want to use --name to search for package names.\n") if !$params{filename};
    }
}