The author is a friend of mine, currently traveling in Asia. We have been keeping in touch via email, since I'm meeting him in Thailand in a couple of weeks to go rock climbing :-). Anyway, I forwarded him your problem, and his response is below:
Hmm... I've had a couple of bug reports about the Babelfish module
recently. Possibly they've changed the format of their page
again (gnashing of teeth). Fortunately someone sent me a
patch; unfortunately it's virtually impossible for me to try it out, so
I'm sending it along to you to give it a whirl if you want to. To try it,
just replace Babelfish.pm with this.
I don't think it's going to address your problem, though. When I try going
to the Babelfish URL and entering text to be translated from English to
Japanese, it spits back characters and not a Roman transliteration. If I
then highlight and paste those characters back into the translation field
at the URL (http://babelfish.altavista.com/raging/translate.dyn?), it
pastes them as Roman garbage and doesn't successfully translate
anything. To be honest, I'm not sure how the whole character set thing
works; this wasn't an issue when I first wrote the module since it only
handled languages based on Roman text. Maybe it's as simple as putting a
character set specifier into the HTML header before sending out the
text? I'd love to work on this, but unfortunately I have no access to a
Unix development environment at the moment. Of course, if you come up with
a patch, send it along...
Dan
package WWW::Babelfish;
use strict;
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK);
require Exporter;
require AutoLoader;
@ISA = qw(Exporter AutoLoader);
# Items to export into callers namespace by default. Note: do not expo
+rt
# names by default without a very good reason. Use EXPORT_OK instead.
# Do not simply export all your public functions/methods/constants.
@EXPORT = qw();
$VERSION = '0.09-bharat';
# Preloaded methods go here.
use HTTP::Request::Common qw(POST);
use LWP::UserAgent;
use HTML::TokeParser;
use IO::String;
my $BABELFISH = 'babelfish.altavista.digital.com';
my $BABELFISH_URL = 'http://babelfish.altavista.com/raging/translate.d
+yn?';
my $MAXCHUNK = 1000; # Maximum number of characters
# Bablefish will translate at one time
my $MAXRETRIES = 5; # Maximum number of retries for a chunk of text
$| = 1;
sub new {
my ($this, @args) = @_;
my $class = ref($this) || $this;
my $self = {};
bless $self, $class;
return undef unless( $self->initialize(@args) );
return $self;
}
sub initialize {
my($self, %params) = @_;;
# Caller can set user agent; we default to "script:WWW::Babelfish/
+0.01"
$self->{agent} = $params{agent} || $0 . ":" . __PACKAGE__ . "/" .
+$VERSION;
$self->{proxy} = $params{proxy} if defined $params{proxy};
# Get the page
my $ua = new LWP::UserAgent;
$ua->proxy('http','http://' . $self->{proxy}) if defined $self->{p
+roxy};
$ua->agent($self->{agent});
my $req = new HTTP::Request('GET' => $BABELFISH_URL);
my $res = $ua->request($req);
unless($res->is_success){
warn(__PACKAGE__ . ":" . $res->status_line);
return 0;
}
my $page = $res->content;
# Extract the mapping of languages to options to be passed back,
# and store it on our object in "Lang2opt" hash
# and extract language names and store on "Langs" hash
my $p = HTML::TokeParser->new(\$page);
my $a2b;
if( $p->get_tag("select") ){
while( $_ = $p->get_tag("option") ){
$a2b = $p->get_trimmed_text;
$self->{Lang2opt}->{$a2b} = $_->[1]{value};
$a2b =~ /(\S+)\sto\s(\S+)/;
$self->{Langs}->{$1} = "";
$self->{Langs}->{$2} = "";
}
}
return 1;
}
sub languages {
my $self = shift;
return sort keys %{$self->{Langs}};
}
sub translate {
my ($self, %params) = @_;
# Paragraph separator is "\n\n" by default
$/ = $params{delimiter} || "\n\n";
undef $self->{error};
unless( exists($self->{Langs}->{$params{source}}) ){
$_ = "Language \"" . $params{source} . "\" is not available";
$self->{error} = $_;
warn(__PACKAGE__ . ": " . $_);
return undef;
}
unless( exists($self->{Langs}->{$params{destination}}) ){
$_ = "Language \"" . $params{destination} . "\" is not available"
+;
$self->{error} = $_;
warn(__PACKAGE__ . ": " . $_);
return undef;
}
# This "feature" is actually useful as a pass-thru filter.
# Babelfish doesn't do same-to-same anyway (though it would be
# pretty interesting if it did)
return $params{text} if $params{source} eq $params{destination};
my $langopt = $self->{Lang2opt}->{$params{source} . " to " . $params
+{destination}};
my $th; # "Text Handle"
if( ref $params{text} ){ # We've been passed a filehandle
$th = $params{text};
}
else{ # We've been passed a string
$th = new IO::String($params{text});
}
my $Text = "";
my $WANT_STRING_RETURNED = 0;
unless( defined $params{ofh} ){
$params{ofh} = new IO::String($Text);
$WANT_STRING_RETURNED = 1;
}
# Variables we use in the next mega-block
my $para; # paragraph
my $num_paras = 0; # number of paragraphs
my $transpara; # translated paragraph
my $para_start_ws = ""; # initial whitespace in paragraph
my $chunk; # paragraph piece to feed to babelfish
my $req; # LWP request object
my $ua; # LWP user agent
my $res; # LWP result
my $text; # translated chunk
my $i; # a counter
while($para = <$th>){
$num_paras++;
$transpara = "";
# Extract any leading whitespace from the start of the paragraph
# Babelfish will eat it anyway.
if ($para =~ s/(^\s+)(\S)/$2/) {
$para_start_ws = $1 || "";
}
chomp $para; # Remove the para delimiter
CHUNK:
foreach $chunk ( $self->_chunk_text($MAXCHUNK, $para) ) {
$req = POST ($BABELFISH_URL, [ 'doit' => 'done', 'urltext' => $c
+hunk, 'lp' => $langopt, 'Submit' => 'Translate' ]);
$ua = new LWP::UserAgent;
$ua->proxy('http','http://' . $self->{proxy}) if defined $self->
+{proxy};
RETRY:
for($i = 0; $i <= $MAXRETRIES; $i++){
$res = $ua->request($req);
if( $res->is_success ){
$text = $self->_extract_text($res->as_string);
next RETRY if $text =~ /^\*\*time-out\*\*/; # in-band signal
+ling; yuck
$text =~ s/\n$//; # Babelfish likes to append newlines
$transpara .= $text;
next CHUNK;
}
}
$self->{error} = "Request timed out more than $MAXRETRIES times"
+;
return undef;
}
print { $params{ofh} } $/ if $num_paras > 1;
print { $params{ofh} } $para_start_ws . $transpara;
}
close $params{ofh};
if( $WANT_STRING_RETURNED ){
return $Text;
}
else{
return 1;
}
}
sub error {
my $self = shift;
return $self->{error};
}
# Given a maximum chunk size and some text, return
# an array of pieces of the text chopped up in a
# logical way and less than or equal to the chunk size
sub _chunk_text {
my($self, $max, $text) = @_;
my @result;
# The trivial case
return($text) if length($text) <= $max;
# Hmmm. There are a couple of ways we could do this.
# I'm guessing that Babelfish doesn't look at any structure larger
+ than
# a sentence; in fact I'm often tempted to guess that it doesn't l
+ook
# at anything larger than a word, but we'll give it the benefit of
+ the doubt.
my $total = length($text);
my $offset = 0;
my $lastoffset = 0;
my $test;
my $chunk;
while( ($total - $lastoffset) > $max) {
$test = $lastoffset + $max;
# Split by terminal punctuation...
@_ = sort {$b <=> $a} ( rindex($text, '.', $test),
rindex($text, '!', $test),
rindex($text, '?', $test),
);
$offset = shift(@_) + 1;
# or by clause...
if( $offset == -1 or $offset <= $lastoffset ){
@_ = sort {$b <=> $a} ( rindex($text, ',', $test),
rindex($text, ';', $test),
rindex($text, ':', $test),
);
$offset = shift(@_) + 1;
# or by word
if( $offset == -1 or $offset <= $lastoffset){
$offset = rindex($text, " ", $test);
}
# or give up
return undef if $offset == -1;
}
$chunk = substr($text, $lastoffset, $offset - $lastoffset);
push( @result, $chunk);
$lastoffset = $offset;
}
push( @result, substr($text, $lastoffset) );
return @result;
}
# Extract the text from the html we get back from babelfish and return
# it (keying on the fact that it's the first thing after a <br> tag,
# possibly removing a textarea tag after it).
sub _extract_text {
my($self, $html) = @_;
my $p = HTML::TokeParser->new(\$html);
my ($tag,$token);
my $text="";
if ($tag = $p->get_tag('br')) {
while ($token = $p->get_token) {
if (shift(@{$token}) ne "T") {
if (defined($text) and $text ne "") {
last;
} else {
next;
}
}
$text .= shift(@{$token});
#$text =~ s/[\r\n]//g;
# This patch for whitespace handling from Olivier Scherler
$text =~ s/[\r\n]/ /g;
$text =~ s/^\s*//;
$text =~ s/\s+/ /g;
$text =~ s/\s+$//;
}
}
return $text;
}
# Autoload methods go after =cut, and are processed by the autosplit p
+rogram.
1;
__END__
=head1 NAME
WWW::Babelfish - Perl extension for translation via babelfish
=head1 SYNOPSIS
use WWW::Babelfish;
$obj = new WWW::Babelfish( 'agent' => 'Mozilla/8.0', 'proxy' => 'myp
+roxy' );
die( "Babelfish server unavailable\n" ) unless defined($obj);
$french_text = $obj->translate( 'source' => 'English',
'destination' => 'French',
'text' => 'My hovercraft is full of
+eels',
'delimiter' => "\n\t",
'ofh' => \*STDOUT );
die("Could not translate: " . $obj->error) unless defined($french_te
+xt);
@languages = $obj->languages;
=head1 DESCRIPTION
Perl interface to the WWW babelfish translation server.
=head1 METHODS
=over 4
=item new
Creates a new WWW::Babelfish object. It can take a named argument for
user agent.
=item languages
Returns a plain array of the languages available for translation.
=item translate
Translates some text using Babelfish.
Parameters:
source: Source language
destination: Destination language
text: If this is a reference, translate interprets it as an
open filehandle to read from. Otherwise, it is treated
as a string to translate.
delimiter: Paragraph delimiter for the text; the default is "\n\n".
Note that this is a string, not a regexp.
ofh: Output filehandle; if provided, the translation will be
written to this filehandle.
If no ofh parameter is given, translate will return the text; otherwis
+e
it will return 1. On failure it returns undef.
=item error
Returns a (hopefully) meaningful error string.
=back
=head1 NOTES
Babelfish translates 1000 characters at a time. This module tries to
break the source text into reasonable logical chunks of less than 1000
characters, feeds them to Babelfish and then reassembles
them. Formatting may get lost in the process.
=head1 AUTHOR
Dan Urist, durist@world.std.com
=head1 SEE ALSO
perl(1).
=cut
~
HTH,
Steve | [reply]
[d/l] |
*light bulb illuminates*
I re-examined the Babelfish form HTML source... I was thinking it was specifying utf8 as the form encoding type, and was preparing to patch Babelfish.pm to use that encoding, but when I looked more carefully, I realized what I had seen was a hidden field... enc=utf8.
Patching Babelfish.pm as follows does the job, as long as the input has been converted to utf8:
--- WWW/Babelfish.pm~ Wed Feb 21 10:33:42 2001
+++ WWW/Babelfish.pm Thu Feb 22 08:56:09 2001
@@ -148,7 +148,7 @@
CHUNK:
foreach $chunk ( $self->_chunk_text($MAXCHUNK, $para) ) {
- $req = POST ($BABELFISH_URL, [ 'doit' => 'done', 'urltext' => $
+chunk, 'lp' => $langopt, 'Submit' => 'Translate' ]);
+ $req = POST ($BABELFISH_URL, [ 'doit' => 'done', 'urltext' => $
+chunk, 'lp' => $langopt, 'Submit' => 'Translate', 'enc' => 'utf8' ]);
$ua = new LWP::UserAgent;
$ua->proxy('http','http://' . $self->{proxy}) if defined $self-
+>{proxy};
--isotope
http://www.skylab.org/~isotope/
| [reply]
[d/l] |
Could you please help me to run your scripts ?
I have no experience in Perl, but I managed to install Perl, download your scripts, install Jcode and Babelfish.
But when I substitute Babelfish with your script it gives lots of errors.
My internet is through a proxy connection so it says it has no internet connection, this is first problem I think, then I don't understand how you input the files that need to be processed.
Thanks!
| [reply] |
I think you should rethink using Babelfish to translate. Although it (babelfish) works well with most western european languages, it really REALLY fouls up sentences when it comes to translating moderate Japanese. | [reply] |
In this case, Babelfish has worked quite well, since I'm only translating short phrases (comments). I'm just trying to shortcut the process of opening source files in Word then copying and pasting into IE, the combination of which is the only way I've successfully fed the Shift-JIS from the source files to Babelfish as UTF-8... Perl seems like the perfect tool for this job.
--isotope
http://www.skylab.org/~isotope/
| [reply] |
huh?
3 year type wine lead 5 fast inspection it is not imitation aero underside muffler aluminum tower bar tie bell intersection exchanging being completed other things
| [reply] |