* reads text file and tweets it

 * usage: update_timeline.pl [text_file_to_tweet]
 * text file should be UTF-8

git-svn-id: https://lab.mitty.jp/svn/lab/trunk@115 7d2118f6-f56c-43e7-95a2-4bb3031d96e7

diff --git a/Dev/twitter/update_timeline.pl b/Dev/twitter/update_timeline.pl
new file mode 100755 (executable)
index 0000000..1afcdf4
--- /dev/null
+++ b/Dev/twitter/update_timeline.pl
@@ -0,0 +1,124 @@
+#! /usr/bin/perl -w
+
+use strict;
+use warnings;
+use utf8;
+
+## IMPORTANT ##
+# When Net::Twitter::Lite encounters a Twitter API error or a network error, 
+# it throws a Net::Twitter::Lite::Error object. 
+# You can catch and process these exceptions by using eval blocks and testing $@
+## from http://search.cpan.org/perldoc?Net::Twitter::Lite#ERROR_HANDLING
+use Net::Twitter::Lite;
+use FindBin qw($Bin);
+use YAML::Tiny;
+use Data::Dumper;
+use Encode;
+
+my $help = sub {
+    die <<EOM;
+usage: $0 [text_file_to_tweet]
+EOM
+};
+if ($ARGV[0] && ($ARGV[0] eq '--help' || $ARGV[0] eq '-h') ) {
+    &{$help};
+}
+
+my $file = $ARGV[0] || 'update.log';
+my $conf = loadconf("$Bin/config.yml");
+if (! defined $conf) {
+    die "$0: cannot parse config file.";
+}
+
+my $bot = login($conf);
+if (! $bot->authorized) {
+    die "$0: this client is not yet authorized.";
+}
+
+open TWEET, $file or die "$0: cannot open file: $file";
+eval {
+    my $update = "";
+    my $res;
+    foreach my $line (<TWEET>) {
+        chomp $line;
+        $update .= $line;
+    }
+    if (length $update) {
+        $update = decode('utf8', $update);
+        $res = $bot->update($update);
+    }
+    
+    foreach my $line (split /\n/, Dumper $res) {
+        if ($line =~ /undef/) { next; }
+        print STDERR $line, "\n";
+    }
+    if (ref $res) {
+        my $status = $res;
+        my $text = "";
+        $text .= "(". $status->{id} . ") ";
+        $text .= ($status->{user}{name}) ? $status->{user}{name} : $status->{from_user};
+        $text .= " [" . $status->{created_at} . "]";
+        $text .= " ".  $status->{text};
+        $text =~ s/\n//;
+        print encode('sjis', $text), "\n";
+    }
+};
+if ($@) {
+    evalrescue($@);
+}
+
+
+sub loadconf {
+    # load configration data from yaml formatted file
+    #   param   => scalar string of filename
+    #   ret     => hash object of yaml data
+    
+    my $file = shift @_;
+    
+    my $yaml = YAML::Tiny->read($file);
+    
+    if ($!) {
+        warn "$0: '$file' $!";
+    }
+    
+    return $yaml->[0];
+}
+
+sub login {
+    # make Net::Twitter::Lite object and login
+    #   param   => hash object of configration
+    #   ret     => Net::Twitter::Lite object
+    
+    my $conf = shift @_;
+    
+    my $bot = Net::Twitter::Lite->new(
+        consumer_key    => $conf->{consumer_key},
+        consumer_secret => $conf->{consumer_secret},
+    );
+    
+    $bot->access_token($conf->{access_token});
+    $bot->access_token_secret($conf->{access_token_secret});
+    
+    return $bot;
+}
+
+sub evalrescue {
+    # output error message at eval error
+    
+    use Scalar::Util qw(blessed);
+    
+    if (blessed $@ && $@->isa('Net::Twitter::Lite::Error')) {
+        warn $@->error;
+        if ($@->twitter_error) {
+            my %twitter_error = %{$@->twitter_error};
+            map {
+                $twitter_error{"$_ => "} = $twitter_error{$_} . "\n";
+                delete $twitter_error{$_}
+            } keys %twitter_error;
+            warn join("", %twitter_error);
+        }
+    }
+    else {
+        warn $@;
+    }
+}