String::CRC::Cksum Perl extension for calculating checksums in a manner compatible with the POSIX cksum program.
Download

String::CRC::Cksum Ranking & Summary

String::CRC::Cksum Tags

Perl module Checksum calculate checksums cksum CRC

String::CRC::Cksum Description

Perl extension for calculating checksums in a manner compatible with the POSIX cksum program. String::CRC::Cksum is a Perl extension for calculating checksums in a manner compatible with the POSIX cksum program.SYNOPSISOO style: use String::CRC::Cksum; $cksum = String::CRC::Cksum->new; $cksum1 = $cksum->new; # clone (clone is reset) $cksum->add("string1"); $cksum->add("string2"); $cksum->add("string3", "string4", "string5", ...); ... ($cksum, $size) = $cksum->peek; $cksum->add("string6", ...); ... ($cksum, $size) = $cksum->result; $cksum1->addfile(*file1); # note: adding many files $cksum1->addfile(*file2); # is probably a silly thing $cksum1->addfile(*file3); # to do, but you *could*... ...Functional style: use String::CRC::Cksum qw(cksum); $cksum = cksum("string1", "string2", ...); ($cksum, $size) = cksum("string1", "string2", ...); $cksum = cksum(*FILE); ($cksum, $size) = cksum(*FILE);The String::CRC::Cksum module calculates a 32 bit CRC, generating the same CRC value as the POSIX cksum program. If called in a list context, returns the length of the data object as well, which is useful for fully emulating the cksum program. The returned checksum will always be a non-negative integral number in the range 0..2^32-1.Despite its name, this module is able to compute the checksum of files as well as of strings. Just pass in a reference to a filehandle, or a reference to any object that can respond to a read() call and eventually return 0 at "end of file".Beware: consider proper use of binmode() if you are on a non-UNIX platform or processing files derived from other platforms.The object oriented interface can be used to progressively add data into the checksum before yielding the result.The functional interface is a convenient way to get a checksum of a single data item.None of the routines make local copies of passed-in strings so you can safely Cksum large strings safe in the knowledge that there won't be any memory issues.Passing in multiple files is acceptable, but perhaps of questionable value. However I don't want to hamper your creativity... Requirements: · Perl

String::CRC::Cksum Related Software