added linehax, a proof of concept for altering existing lines with /subs s/find/replace/

1 files changed, 176 insertions, 0 deletions

diff --git a/feature-tests/linehax.pl b/feature-tests/linehax.pl
new file mode 100644
index 0000000..5744905
--- /dev/null
+++ b/feature-tests/linehax.pl
@@ -0,0 +1,176 @@
+=pod
+
+=head1 NAME
+
+template.pl
+
+=head1 DESCRIPTION
+
+A minimalist template useful for basing actual scripts on.
+
+=head1 INSTALLATION
+
+Copy into your F<~/.irssi/scripts/> directory and load with
+C</SCRIPT LOAD F<filename>>.
+
+=head1 USAGE
+
+None, since it doesn't actually do anything.
+
+=head1 AUTHORS
+
+Copyright E<copy> 2011 Tom Feist C<E<lt>shabble+irssi@metavore.orgE<gt>>
+
+=head1 LICENCE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+=head1 BUGS
+
+=head1 TODO
+
+Use this template to make an actual script.
+
+=cut
+
+use strict;
+use warnings;
+
+use Irssi;
+use Irssi::Irc;
+use Irssi::TextUI;
+
+use Data::Dumper;
+
+our $VERSION = '0.1';
+our %IRSSI = (
+              authors     => 'shabble',
+              contact     => 'shabble+irssi@metavore.org',
+              name        => 'linehax',
+              description => 'Doing various things with the '
+              . 'contents of window buffers',
+              license     => 'MIT',
+              updated     => '$DATE'
+             );
+
+
+sub get_lines {
+
+}
+
+sub del_line {
+
+}
+
+sub insert_line {
+
+    my $line = shift;
+}
+
+sub alter_line {
+
+}
+
+sub find_line {
+    my ($win, $pattern) = @_;
+
+    my @lines = _get_all_lines($win);
+
+    return unless @lines;
+
+    foreach my $line (@lines) {
+        next unless $line;
+#        $win->print("Line is: " . ref($line));
+
+        my ($lobj, $ltext, $lnum) = @$line;
+        #$win->print("Trying line: >>$ltext<<");
+        if ($ltext =~ m/\Q$pattern\E/) {
+            #$win->print("Matched [$lnum] $lobj ($ltext)");
+            return $lobj;
+        }
+    }
+    $win->print("No match");
+    return;
+}
+
+sub _get_all_lines {
+    my ($win) = @_;
+    my $view = $win->view;
+
+    my $view_buffer = $view->{buffer};
+    my $lines_count = $view_buffer->{lines_count};
+
+    my @lines;
+    my $line = $view_buffer->{first_line};
+
+    for (0..$lines_count - 1) {
+        push @lines, [ $line, $line->get_text(0), $_ ];
+        $line = $line->next();
+    }
+    return @lines;
+}
+
+sub cmd_subs {
+    my ($str, $server, $witem) = @_;
+
+    my $level = Irssi::MSGLEVEL_CLIENTCRAP;
+
+    my $win;
+    if (defined $witem) {
+        $win = $witem->window();
+    }
+
+    # fallback.
+    $win = Irssi::active_win() unless defined $win;
+
+
+    my ($match, $replace);
+
+    if ($str =~ m|^\s*s/(.+?)/(.*?)/\s*$|) {
+        #$win->print("Matched: $1, $2");
+        $match = $1;
+        $replace = $2;
+    } else {
+        $win->print("Invalid arguments to subs: '$str'");
+        return;
+    }
+
+
+    my @lines = _get_all_lines($win);
+    #$win->print(Dumper([ map { $_->get_text(0) } @lines]));
+    #$win->print(Dumper(\@lines));
+
+    my $matching_line = find_line($win, $match);
+    if ($matching_line) {
+        my $line_text = $matching_line->get_text(0);
+
+        my $new_text = $line_text;
+        $new_text =~ s/\Q$match\E/$replace/g;
+
+        if ($new_text ne $line_text) {
+            $win->print_after($matching_line, $level, $new_text);
+            $win->view()->remove_line($matching_line);
+            $win->view()->redraw();
+        }
+    } else {
+        $win->print("No matches found for '$match'");
+    }
+}
+
+Irssi::command_bind 'subs', \&cmd_subs;