DOKK / manpages / debian 12 / lintian / Lintian::SlidingWindow.3.en
Lintian::SlidingWindow(3) Debian Package Checker Lintian::SlidingWindow(3)

Lintian::SlidingWindow - Lintian interface to sliding window match

    use Lintian::SlidingWindow;
    my $sfd = Lintian::SlidingWindow->new('<','someevilfile.c', sub { $_ = lc($_); });
    my $window;
    while ($window = $sfd->readwindow) {
       if (index($window, 'evil') > -1) {
           if($window =~
                 m/software \s++ shall \s++
                   be \s++ used \s++ for \s++ good \s*+ ,?+ \s*+
                   not \s++ evil/xsim) {
              # do something like : tag 'license-problem-json-evil';
           }
       }
    }

Lintian::SlidingWindow provides a way of matching some pattern, including multi line pattern, without needing to fully load the file in memory.

Create a new sliding window by reading from a given HANDLE, which must be open for reading. Optionally run BLOCKSUB against each block. Note that BLOCKSUB should apply transform byte by byte and does not depend of context.

Each window consists of up to two blocks of BLOCKSIZE characters.

Return a new block of sliding window. Return undef at end of file.
"blocksize"

Originally written by Bastien ROUCARIES for Lintian.

lintian(1)

2023-02-05 Lintian v2.116.3