#!/usr/bin/perl -w
-# Copyright © 2005, 2006 Jamie Zawinski <jwz@jwz.org>
+# Copyright © 2005-2010 Jamie Zawinski <jwz@jwz.org>
#
# Permission to use, copy, modify, distribute, and sell this software and its
# documentation for any purpose is hereby granted without fee, provided that
# Created: 19-Mar-2005.
require 5;
-use diagnostics;
+#use diagnostics; # Fails on some MacOS 10.5 systems
use strict;
+
use Socket;
use POSIX qw(strftime);
use Text::Wrap qw(wrap);
use bytes;
my $progname = $0; $progname =~ s@.*/@@g;
-my $version = q{ $Revision: 1.13 $ }; $version =~ s/^[^0-9]+([0-9.]+).*$/$1/;
+my $version = q{ $Revision: 1.22 $ }; $version =~ s/^[^0-9]+([0-9.]+).*$/$1/;
my $verbose = 0;
my $http_proxy = undef;
"ocirc" => 'ô', "otilde" => 'õ', "ouml" => 'ö', "divide" => '÷',
"oslash" => 'ø', "ugrave" => 'ù', "uacute" => 'ú', "ucirc" => 'û',
"uuml" => 'ü', "yacute" => 'ý', "thorn" => 'þ', "yuml" => 'ÿ',
- "apos" => '\''
+ "apos" => '\'',
+
+ # HTML 4 entities that do not have 1:1 Latin1 mappings.
+ "bull" => "*", "hellip"=> "...", "prime" => "'", "Prime" => "\"",
+ "frasl" => "/", "trade" => "[tm]", "larr" => "<-", "rarr" => "->",
+ "harr" => "<->", "lArr" => "<=", "rArr" => "=>", "hArr" => "<=>",
+ "empty" => "Ø", "minus" => "-", "lowast"=> "*", "sim" => "~",
+ "cong" => "=~", "asymp" => "~", "ne" => "!=", "equiv" => "==",
+ "le" => "<=", "ge" => ">=", "lang" => "<", "rang" => ">",
+ "loz" => "<>", "OElig" => "OE", "oelig" => "oe", "Yuml" => "Y",
+ "circ" => "^", "tilde" => "~", "ensp" => " ", "emsp" => " ",
+ "thinsp"=> " ", "ndash" => "-", "mdash" => "-", "lsquo" => "`",
+ "rsquo" => "'", "sbquo" => "'", "ldquo" => "\"", "rdquo" => "\"",
+ "bdquo" => "\"", "lsaquo"=> "<", "rsaquo"=> ">",
);
# Maps certain UTF8 characters (2 or 3 bytes) to the corresponding
my ($text) = @_;
$text =~ s/(&(\#)?([[:alpha:]\d]+);?)/
{
- my $c;
- if ($2) {
- $c = chr($3); # the &#number is always decimal, right?
+ my $c = $3;
+ if (! defined($2)) {
+ $c = $entity_table{$c}; # for Á
} else {
- $c = $entity_table{$3};
+ if ($c =~ m@^x([\dA-F]+)$@si) { # for A
+ $c = chr(hex($1));
+ } elsif ($c =~ m@^\d+$@si) { # for A
+ $c = chr($c);
+ } else {
+ $c = undef;
+ }
}
-# print STDERR "$progname: warning: unknown HTML character entity \"$1\"\n"
-# unless $c;
- ($c ? $c : "[$3]");
+ ($c || "[$3]"); # for &unknown; => "[unknown]"
}
/gexi;
return $text;
system ("cat", "/etc/redhat-release");
}
+ if (-f "/etc/release") { # "Solaris 10 3/05 s10_74L2a X86"
+ safe_system ("head", "-1", "/etc/release");
+ }
+
if (-f "/usr/sbin/system_profiler") { # "Mac OS X 10.4.5 (8H14)"
my $sp = # "iMac G5"
`/usr/sbin/system_profiler SPSoftwareDataType SPHardwareDataType`;
sub get_url_1($;$) {
my ($url, $referer) = @_;
- if (! ($url =~ m@^(http|feed)://@i)) {
+ $url =~ s@^feed:@http:@si;
+ if (! ($url =~ m@^http://@i)) {
error ("not an HTTP URL: $url");
}
my ($body, $rss_p) = @_;
$_ = $body;
+ # In HTML, try to preserve newlines inside of PRE.
+ #
if (! $rss_p) {
- # In HTML, unfold lines (this breaks PRE. Sue me.)
+ s@(<PRE\b[^<>]*>\s*)(.*?)(</PRE)@{
+ my ($a, $b, $c) = ($1, $2, $3);
+ $b =~ s/[\r\n]/<BR>/gs;
+ $a . $b . $c;
+ }@gsexi;
+ }
+
+ if (! $rss_p) {
+ # In HTML, unfold lines.
# In RSS, assume \n means literal line break.
s@[\r\n]@ @gsi;
}
s/[ \t]+$//gm; # lose whitespace at end of line again
}
+ s/^\n+//gs;
+
y/A-Za-z/N-ZA-Mn-za-m/ if ($nyarlathotep_p);
print STDOUT $_;
}
$title = rss_field_to_html ($title || '');
$body1 = rss_field_to_html ($body1 || '');
+ $title = '' if ($body1 eq $title); # Identical in Twitter's atom feed.
+
reformat_html ("$title<P>$body1", 1);
print "\n";
}
}
-sub get_url_text($) {
- my ($url) = @_;
+# Figure out what the proxy server should be, either from environment
+# variables or by parsing the output of the (MacOS) program "scutil",
+# which tells us what the system-wide proxy settings are.
+#
+sub set_proxy() {
# historical suckage: the environment variable name is lower case.
$http_proxy = $ENV{http_proxy} || $ENV{HTTP_PROXY};
- if ($http_proxy && $http_proxy =~ m@^http://([^/]*)/?$@ ) {
- # historical suckage: allow "http://host:port" as well as "host:port".
- $http_proxy = $1;
+ if (defined ($http_proxy)) {
+ if ($http_proxy && $http_proxy =~ m@^http://([^/]*)/?$@ ) {
+ # historical suckage: allow "http://host:port" as well as "host:port".
+ $http_proxy = $1;
+ }
+
+ } else {
+ my $proxy_data = `scutil --proxy 2>/dev/null`;
+ my ($server) = ($proxy_data =~ m/\bHTTPProxy\s*:\s*([^\s]+)/s);
+ my ($port) = ($proxy_data =~ m/\bHTTPPort\s*:\s*([^\s]+)/s);
+ # Note: this ignores the "ExceptionsList".
+ if ($server) {
+ $http_proxy = $server;
+ $http_proxy .= ":$port" if $port;
+ }
}
+ print STDERR "$progname: proxy server: $http_proxy\n"
+ if ($verbose > 2 && $http_proxy);
+}
+
+
+sub get_url_text($) {
+ my ($url) = @_;
+
+ set_proxy();
+
my ($ct, $body) = get_url ($url);
$ct = guess_content_type ($ct, $body);
elsif (m/^--?date$/) { $text_mode = 'date';
$load_p = 0; }
elsif (m/^--?text$/) { $text_mode = 'literal';
- $text_literal = shift @ARGV;
+ $text_literal = shift @ARGV || '';
$load_p = 0; }
elsif (m/^--?file$/) { $text_mode = 'file';
- $text_file = shift @ARGV;
+ $text_file = shift @ARGV || '';
$load_p = 0; }
elsif (m/^--?program$/) { $text_mode = 'program';
- $text_program = shift @ARGV;
+ $text_program = shift @ARGV || '';
$load_p = 0; }
elsif (m/^--?url$/) { $text_mode = 'url';
- $text_url = shift @ARGV;
+ $text_url = shift @ARGV || '';
$load_p = 0; }
elsif (m/^--?col(umn)?s?$/) { $wrap_columns = 0 + shift @ARGV; }
elsif (m/^--?cocoa$/) { $cocoa_id = shift @ARGV; }
}
output();
+
+
+ if (defined ($cocoa_id)) {
+ #
+ # On MacOS, sleep for 10 seconds between when the last output is
+ # printed, and when this process exits. This is because MacOS
+ # 10.5.0 and later broke ptys in a new and exciting way: basically,
+ # once the process at the end of the pty exits, you have exactly
+ # 1 second to read all the queued data off the pipe before it is
+ # summarily flushed.
+ #
+ # Many of the screen savers were written to depend on being able
+ # to read a small number of bytes, and continue reading until they
+ # reached EOF. This is no longer possible.
+ #
+ # Note that the current MacOS behavior has all three of these
+ # awesome properties: 1) Inconvenient; 2) Has no sane workaround;
+ # 3) Different behavior than MacOS 10.1 through 10.4; and 4)
+ # Different behavior than every other Unix in the world.
+ #
+ # See http://jwz.livejournal.com/817438.html, and for those of
+ # you inside Apple, "Problem ID 5606018".
+ #
+ # One workaround would be to rewrite the savers to have an
+ # internal buffer, and always read as much data as possible as
+ # soon as a pipe has input available. However, that's a lot more
+ # work, so instead, let's just not exit right away, and hope that
+ # 10 seconds is enough.
+ #
+ # This will solve the problem for invocations of xscreensaver-text
+ # that produce little output (e.g., date-mode); and won't solve it
+ # in cases where a large amount of text is generated in a short
+ # amount of time (e.g., url-mode.)
+ #
+ sleep (10);
+ }
}
main();
projects / xscreensaver / blobdiff