my $progname = $0; $progname =~ s@.*/@@g;
-my ($version) = ('$Revision: 1.46 $' =~ m/\s(\d[.\d]+)\s/s);
+my ($version) = ('$Revision: 1.52 $' =~ m/\s(\d[.\d]+)\s/s);
my $verbose = 0;
# JPEG, GIF, and PNG files that are are smaller than this are rejected:
# this is so that you can use an image directory that contains both big
# images and thumbnails, and have it only select the big versions.
+# But, if all of your images are smaller than this, all will be rejected.
#
my $min_image_width = 500;
my $min_image_height = 500;
my $skip_count_unstat = 0; # number of files skipped without stat'ing
my $skip_count_stat = 0; # number of files skipped after stat
+my $config_file = $ENV{HOME} . "/.xscreensaver";
+my $image_directory = undef;
+
+
sub find_all_files($);
sub find_all_files($) {
my ($dir) = @_;
# malicious images really do exist, so for xscreensaver-getimage-file,
# let's actually require that SSL be installed properly.
-
+ print STDERR "$progname: loading $url\n" if ($verbose);
my $body = (LWP::Simple::get($url) || '');
if ($body !~ m@^\s*<(\?xml|rss)\b@si) {
}
}
- # Then look for <description>... with an <img src="..."> inside.
+ # Then look for <content:encoded> or <description>... with an
+ # <img src="..."> inside. If more than one image, take the first.
#
- if (! $iurl) {
- foreach my $link ($item =~ m@<description[^<>]*>(.*?)</description>@gsi) {
+ foreach my $t ('content:encoded', 'description') {
+ last if $iurl;
+ foreach my $link ($item =~ m@<$t[^<>]*>(.*?)</$t>@gsi) {
last if $iurl;
- my $desc = html_unquote($1);
+ my $desc = $1;
+ if ($desc =~ m@<!\[CDATA\[\s*(.*?)\s*\]\]>@gs) {
+ $desc = $1;
+ } else {
+ $desc = html_unquote($desc);
+ }
my ($href) = ($desc =~ m@<IMG[^<>]*\bSRC=[\"\']?([^\"\'<>]+)@si);
$iurl = html_unquote($href) if ($href);
# If IMG SRC has a bogus extension, pretend it's a JPEG.
}
}
- # Could also do <content:encoded>, but the above probably covers all
- # of the real-world possibilities.
-
-
# Find a unique ID for this image, to defeat image farms.
# First look for <id>...</id>
($id) = ($item =~ m!<ID\b[^<>]*>\s*([^<>]+?)\s*</ID>!si) unless $id;
closedir $dirh;
if ($count <= 0) {
- print STDERR "$progname: no files in cache of $url\n" if ($verbose);
+ print STDERR "$progname: no image files in cache of $url\n"
+ if ($verbose);
$poll_p = 1;
}
}
my @urls = parse_feed ($url);
print STDERR "$progname: " . ($#urls + 1) . " images\n"
if ($verbose > 1);
+ my %seen_src_urls;
foreach my $p (@urls) {
my ($furl, $id) = @$p;
$furl = expand_url ($furl, $url);
+
+ # No need to download the same image twice, even if it was in the feed
+ # multiple times under different GUIDs.
+ next if ($seen_src_urls{$furl});
+ $seen_src_urls{$furl} = 1;
+
my $f = download_image ($furl, $id, $dir);
next unless $f;
$files{$f} = 1; # Got it, don't delete
write_cache ($dir);
if ($#all_files < 0) {
- print STDERR "$progname: no files in $dir\n";
+ print STDERR "$progname: no image files in $dir\n";
exit 1;
}
my $max_tries = 50;
- for (my $i = 0; $i < $max_tries; $i++) {
-
- my $n = int (rand ($#all_files + 1));
- my $file = $all_files[$n];
- if (large_enough_p ($file)) {
- if (! $url) {
- $file =~ s@^\Q$dir/@@so || die; # remove $dir from front
+ my $total_files = @all_files;
+ my $sparse_p = ($total_files < 20);
+
+ # If the directory has a lot of files in it:
+ # Make a pass through looking for hirez files (assume some are thumbs);
+ # If we found none, then, select any other file at random.
+ # Otherwise if there are a small number of files:
+ # Just select one at random (in case there's like, just one hirez).
+
+ for (my $check_size_p = $sparse_p ? 0 : 1;
+ $check_size_p >= 0; $check_size_p--) {
+
+ for (my $i = 0; $i < $max_tries; $i++) {
+ my $n = int (rand ($total_files));
+ my $file = $all_files[$n];
+ if (!$check_size_p || large_enough_p ($file)) {
+ if (! $url) {
+ $file =~ s@^\Q$dir/@@so || die; # remove $dir from front
+ }
+ return $file;
}
- return $file;
}
}
- print STDERR "$progname: no suitable images in $dir " .
- "(after $max_tries tries)\n";
+ print STDERR "$progname: no suitable images in " . ($url || $dir) . " -- " .
+ ($total_files <= $max_tries
+ ? "all $total_files images"
+ : "$max_tries of $total_files images") .
+ " are smaller than ${min_image_width}x${min_image_height}.\n";
# If we got here, blow away the cache. Maybe it's stale.
unlink $cache_file_name if $cache_file_name;
}
+# Reads the prefs we use from ~/.xscreensaver
+#
+sub get_x11_prefs() {
+ my $got_any_p = 0;
+
+ if (open (my $in, '<', $config_file)) {
+ print STDERR "$progname: reading $config_file\n" if ($verbose > 1);
+ local $/ = undef; # read entire file
+ my $body = <$in>;
+ close $in;
+ $got_any_p = get_x11_prefs_1 ($body);
+
+ } elsif ($verbose > 1) {
+ print STDERR "$progname: $config_file: $!\n";
+ }
+
+ if (! $got_any_p && defined ($ENV{DISPLAY})) {
+ # We weren't able to read settings from the .xscreensaver file.
+ # Fall back to any settings in the X resource database
+ # (/usr/X11R6/lib/X11/app-defaults/XScreenSaver)
+ #
+ print STDERR "$progname: reading X resources\n" if ($verbose > 1);
+ my $body = `appres XScreenSaver xscreensaver -1`;
+ $got_any_p = get_x11_prefs_1 ($body);
+ }
+}
+
+
+sub get_x11_prefs_1($) {
+ my ($body) = @_;
+
+ my $got_any_p = 0;
+ $body =~ s@\\\n@@gs;
+ $body =~ s@^[ \t]*#[^\n]*$@@gm;
+
+ if ($body =~ m/^[.*]*imageDirectory:[ \t]*([^\s]+)\s*$/im) {
+ $image_directory = $1;
+ $got_any_p = 1;
+ }
+ return $got_any_p;
+}
+
+
+sub get_cocoa_prefs($) {
+ my ($id) = @_;
+ print STDERR "$progname: reading Cocoa prefs: \"$id\"\n" if ($verbose > 1);
+ my $v = get_cocoa_pref_1 ($id, "imageDirectory");
+ $v = '~/Pictures' unless defined ($v); # Match default in XScreenSaverView
+ $image_directory = $v if defined ($v);
+}
+
+
+sub get_cocoa_pref_1($$) {
+ my ($id, $key) = @_;
+ # make sure there's nothing stupid/malicious in either string.
+ $id =~ s/[^-a-z\d. ]/_/gsi;
+ $key =~ s/[^-a-z\d. ]/_/gsi;
+ my $cmd = "defaults -currentHost read \"$id\" \"$key\"";
+
+ print STDERR "$progname: executing $cmd\n"
+ if ($verbose > 3);
+
+ my $val = `$cmd 2>/dev/null`;
+ $val =~ s/^\s+//s;
+ $val =~ s/\s+$//s;
+
+ print STDERR "$progname: Cocoa: $id $key = \"$val\"\n"
+ if ($verbose > 2);
+
+ $val = undef if ($val =~ m/^$/s);
+
+ return $val;
+}
+
+
sub error($) {
my ($err) = @_;
print STDERR "$progname: $err\n";
}
sub usage() {
- print STDERR "usage: $progname [--verbose] directory-or-feed-url\n\n" .
+ print STDERR "usage: $progname [--verbose] [ directory-or-feed-url ]\n\n" .
" Prints the name of a randomly-selected image file. The directory\n" .
" is searched recursively. Images smaller than " .
"${min_image_width}x${min_image_height} are excluded.\n" .
}
sub main() {
- my $dir = undef;
+ my $cocoa_id = undef;
+ my $abs_p = 0;
while ($_ = $ARGV[0]) {
shift @ARGV;
elsif (m/^--?no-spotlight$/s) { $use_spotlight_p = 0; }
elsif (m/^--?cache$/s) { $cache_p = 1; }
elsif (m/^--?no-?cache$/s) { $cache_p = 0; }
+ elsif (m/^--?cocoa$/) { $cocoa_id = shift @ARGV; }
+ elsif (m/^--?abs(olute)?$/) { $abs_p = 1; }
elsif (m/^-./) { usage; }
- elsif (!defined($dir)) { $dir = $_; }
+ elsif (!defined($image_directory)) { $image_directory = $_; }
else { usage; }
}
- usage unless (defined($dir));
+ # Most hacks (X11 and Cocoa) pass a --directory value on the command line,
+ # but if they don't, look it up from the resources. Currently this only
+ # happens with "glitchpeg" which invokes xscreensaver-getimage-file
+ # directly instead of going through the traditional path.
+ #
+ if (! $image_directory) {
+ if (!defined ($cocoa_id)) {
+ # see OSX/XScreenSaverView.m
+ $cocoa_id = $ENV{XSCREENSAVER_CLASSPATH};
+ }
+
+ if (defined ($cocoa_id)) {
+ get_cocoa_prefs($cocoa_id);
+ error ("no imageDirectory in $cocoa_id") unless $image_directory;
+ } else {
+ get_x11_prefs();
+ error ("no imageDirectory in X11 resources") unless $image_directory;
+ }
+ }
+
+ usage unless (defined($image_directory));
- $dir =~ s@^feed:@http:@si;
+ $image_directory =~ s@^feed:@http:@si;
- if ($dir =~ m/^https?:/si) {
+ if ($image_directory =~ m/^https?:/si) {
# ok
} else {
- $dir =~ s@^~/@$ENV{HOME}/@s; # allow literal "~/"
- $dir =~ s@/+$@@s; # omit trailing /
+ $image_directory =~ s@^~/@$ENV{HOME}/@s; # allow literal "~/"
+ $image_directory =~ s@/+$@@s; # omit trailing /
- if (! -d $dir) {
- print STDERR "$progname: $dir: not a directory or URL\n";
+ if (! -d $image_directory) {
+ print STDERR "$progname: $image_directory not a directory or URL\n";
usage;
}
}
- my $file = find_random_file ($dir);
+ my $file = find_random_file ($image_directory);
+
+ # With --absolute return fully qualified paths instead of relative to --dir.
+ if ($abs_p &&
+ $file !~ m@^/@ &&
+ $image_directory =~ m@^/@s) {
+ $file = "$image_directory/$file";
+ $file =~ s@//+@/@gs;
+ }
+
print STDOUT "$file\n";
}
projects / xscreensaver / blobdiff