Add oopsie.pl

1 files changed, 44 insertions, 0 deletions

diff --git a/scripts/oopsie.pl b/scripts/oopsie.pl
new file mode 100644
index 0000000..8cb5992
--- /dev/null
+++ b/scripts/oopsie.pl
@@ -0,0 +1,44 @@
+use strict;
+use warnings;
+
+our $VERSION = "1.0";
+our %IRSSI = (
+  authors     => 'David Leadbeater',
+  contact     => 'dgl@dgl.cx',
+  name        => 'oopsie',
+  description => 'Stops those silly mistakes being sent (spaces at start of ' .
+                 'line, /1/1 for window changes, etc).',
+  license     => 'WTFPL <http://dgl.cx/licence>',
+  url         => 'http://dgl.cx/irssi',
+);
+
+# /SET oopsie_chars_regexp [0-9]
+# This can have nearly anything in it, but you may block some commands if
+# you're not careful. \w may be useful (e.g. blocks "/ m foo bar") but \w+ is
+# problematic (it would block /exec /some/file among other useful things,
+# although if you're a bad typist maybe that is a reasonable trade-off).
+Irssi::settings_add_str("misc", "oopsie_chars_regexp", "[0-9]");
+
+my @words = qw(stopped prevented avoided inhibited forestalled averted deflected
+  repelled);
+
+Irssi::signal_add("send command" => sub {
+  my ($command, $server, $rec) = @_;
+
+  my $chars = Irssi::settings_get_str("cmdchars");
+  my $cmdchars_re = qr/[$chars]/;
+  my $oopsie_re = Irssi::settings_get_str("oopsie_chars_regexp");
+
+  if ($command =~ /^\s+$cmdchars_re/ ||
+      $command =~ /^$cmdchars_re(?:\s+$oopsie_re|$oopsie_re\s*$cmdchars_re)/) {
+    Irssi::signal_stop();
+    $rec->print("oopsie " . $words[rand @words] . ": $command", MSGLEVEL_CRAP);
+  }
+});
+
+Irssi::signal_add("setup changed" => sub {
+  if (" " =~ Irssi::settings_get_str("oopsie_chars_regexp")) {
+    Irssi::active_win->print(
+      "Your oopsie_chars_regexp matches a space. This is a very bad idea.");
+  }
+});