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Fix remaining paste truncation Unicode issues

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Uses Unicode::Truncate CPAN module to truncate UTF-8 strings to byte lengths
without corruption.
This commit is contained in:
Pragmatic Software 2021-06-06 21:47:06 -07:00
parent 45d6576b5a
commit 33f82c6523
2 changed files with 17 additions and 7 deletions
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1
MODULES
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@ -42,6 +42,7 @@ Text::Unidecode
Time::Duration
Time::ParseDate
re::engine::RE2
Unicode::Truncate
URI::Escape
WebService::UrbanDictionary
WWW::Google::CustomSearch

23
PBot/Interpreter.pm
View File

@ -17,6 +17,7 @@ use utf8;
use Time::HiRes qw/gettimeofday/;
use Time::Duration;
use Unicode::Truncate;
use PBot::Utils::ValidateString;
@ -244,7 +245,7 @@ sub interpret {
$arguments = '' if not defined $arguments;
}
# FIXME: make this a registry item
# TODO: make this a registry item
if (length $keyword > 128) {
$keyword = substr($keyword, 0, 128);
$self->{pbot}->{logger}->log("Truncating keyword to 128 chars: $keyword\n");
@ -742,8 +743,9 @@ sub truncate_result {
my $max_msg_len = $self->{pbot}->{registry}->get_value('irc', 'max_msg_len');
$max_msg_len -= length "PRIVMSG $from :" if defined $from;
$max_msg_len -= length "PRIVMSG $from :";
# encode texts to utf8
utf8::encode $paste_text;
utf8::encode $text;
@ -755,9 +757,11 @@ sub truncate_result {
my $max_paste_len = $self->{pbot}->{registry}->get_value('paste', 'max_length') // 1024 * 32;
# truncate paste to max paste length
# FIXME: this potentially chops unicode characters in wrong places
$paste_text = substr $paste_text, 0, $max_paste_len;
$paste_text = truncate_egc $paste_text, $max_paste_len;
$self->{pbot}->{logger}->log("Truncated paste to $max_paste_len bytes\n");
# decode paste text from utf8 because webpaste encodes to utf8
utf8::decode $paste_text;
# send text to paste site
@ -782,13 +786,18 @@ sub truncate_result {
$self->{pbot}->{logger}->log("Message truncated -- $paste_result\n");
}
# make room to append the truncation text to the message text
# (third argument to truncate_egc is '' to prevent appending its own ellipsis)
my $trunc_len = length $text < $max_msg_len ? length $text : $max_msg_len;
# FIXME: this potentially chops unicode characters in wrong places
$text = substr($text, 0, $trunc_len);
substr($text, $trunc_len - length $trunc) = $trunc;
$text = truncate_egc $text, $trunc_len - length $trunc, '';
# append the truncation text
$text .= $trunc;
}
# decode text from utf8
utf8::decode $text;
return $text;
}