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author | Luke Kanies <luke@madstop.com> | 2008-02-14 19:45:47 -0600 |
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committer | Luke Kanies <luke@madstop.com> | 2008-02-14 19:45:47 -0600 |
commit | aebd303e267a4b830592ffe3551bd80647802a20 (patch) | |
tree | 63fde865130a0e862a170c4e9c32b0260ea8f5f8 /lib/puppet/util | |
parent | 5ef8a3e6eb81c7367f50c9de3ec10a8301b106d1 (diff) | |
download | puppet-aebd303e267a4b830592ffe3551bd80647802a20.tar.gz puppet-aebd303e267a4b830592ffe3551bd80647802a20.tar.xz puppet-aebd303e267a4b830592ffe3551bd80647802a20.zip |
Enhancing the stand-alone checksums utility module
with the rest of the checksums we're likely to use,
and adding tests, which I somehow missed when I wrote
this file.
Diffstat (limited to 'lib/puppet/util')
-rw-r--r-- | lib/puppet/util/checksums.rb | 57 |
1 files changed, 47 insertions, 10 deletions
diff --git a/lib/puppet/util/checksums.rb b/lib/puppet/util/checksums.rb index 6f6ea59b5..0d45c6d5a 100644 --- a/lib/puppet/util/checksums.rb +++ b/lib/puppet/util/checksums.rb @@ -1,37 +1,74 @@ +# A stand-alone module for calculating checksums +# in a generic way. module Puppet::Util::Checksums + # Calculate a checksum using Digest::MD5. def md5(content) require 'digest/md5' Digest::MD5.hexdigest(content) end + # Calculate a checksum of the first 500 chars of the content using Digest::MD5. + def md5lite(content) + md5(content[0..499]) + end + + # Calculate a checksum of a file's content using Digest::MD5. def md5_file(filename) require 'digest/md5' - incr_digest = Digest::MD5.new() - File.open(filename, 'r') do |file| - file.each_line do |line| - incr_digest << line - end - end + digest = Digest::MD5.new() + return checksum_file(digest, filename) + end + + # Calculate a checksum of the first 500 chars of a file's content using Digest::MD5. + def md5lite_file(filename) + File.open(filename, "r") { |f| return md5(f.read(500)) } + end - return incr_digest.hexdigest + # Return the :mtime timestamp of a file. + def mtime_file(filename) + File.stat(filename).send(:mtime) end + # Calculate a checksum using Digest::SHA1. def sha1(content) require 'digest/sha1' Digest::SHA1.hexdigest(content) end + # Calculate a checksum of the first 500 chars of the content using Digest::SHA1. + def sha1lite(content) + sha1(content[0..499]) + end + + # Calculate a checksum of a file's content using Digest::SHA1. def sha1_file(filename) require 'digest/sha1' - incr_digest = Digest::SHA1.new() + digest = Digest::SHA1.new() + return checksum_file(digest, filename) + end + + # Calculate a checksum of the first 500 chars of a file's content using Digest::SHA1. + def sha1lite_file(filename) + File.open(filename, "r") { |f| return sha1(f.read(500)) } + end + + # Return the :ctime of a file. + def timestamp_file(filename) + File.stat(filename).send(:ctime) + end + + private + + # Perform an incremental checksum on a file. + def checksum_file(digest, filename) File.open(filename, 'r') do |file| file.each_line do |line| - incr_digest << line + digest << line end end - return incr_digest.hexdigest + return digest.hexdigest end end |