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view bin/ed2k @ 702:48b0cfae98be
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author | nanaya <me@nanaya.net> |
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date | Mon, 31 Oct 2022 20:42:42 +0900 |
parents | 94ee419ad047 |
children | bcdf320dabf4 |
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#!/usr/bin/env ruby require 'openssl' def file_ed2k(file_name, output_mode = "hash") ed2k_block = 9500*1024 #ed2k block size is 9500 KiB ed2k_hash = "" file = File.open(file_name, 'rb') file_size = file.stat.size #while at it, fetch the size of the file while (block = file.read(ed2k_block)) do ed2k_hash << OpenSSL::Digest::MD4.digest(block) #hashes are concatenated md4 per block size for ed2k hash end ed2k_hash << OpenSSL::Digest::MD4.digest("") if file_size % ed2k_block == 0 #on size of modulo block size, append another md4 hash of a blank string file.close ed2k_hash = OpenSSL::Digest::MD4.hexdigest(ed2k_hash) #finally return case output_mode #there are 2 modes, just the has, or complete with link. when "hash" ed2k_hash when "link" "ed2k://|file|#{File.basename(file_name)}|#{file_size}|#{ed2k_hash}|" end end ARGV.each do |file_name| next unless File.file?(file_name) and File.readable?(file_name) printf("%s\n", file_ed2k(file_name,"link")) end