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Description: Enable manual to be built reproducibly
In order to make the manual build reproducibly, we need a way to stop
writing the current build time in it.
.
The following patch will allow this in two ways: if BUILD_DATE is set
in the environment, the date will be taken from there; otherwise, if
the Git index is available, the date of the last commit will be used.
Author: Jérémy Bobbio <lunar@debian.org>
Forwarded: https://github.com/prawnpdf/prawn/pull/844
Last-Update: 2015-07-24
--- a/manual/cover.rb
+++ b/manual/cover.rb
@@ -23,14 +23,17 @@
:size => 60 }
], :at => [170, cursor - 160])
+ last_update = Time.at(ENV['BUILD_EPOCH'].to_i) if ENV['BUILD_EPOCH']
if Dir.exist?("#{Prawn::BASEDIR}/.git")
commit = `git show --pretty=%h`
git_commit = "git commit: #{commit.lines.first}"
+ last_update ||= Time.at(`git log -1 --pretty='%ct'`.to_i)
else
git_commit = ""
+ last_update ||= Time.now
end
- formatted_text_box([ { :text => "Last Update: #{Time.now.strftime("%Y-%m-%d")}\n" +
+ formatted_text_box([ { :text => "Last Update: #{last_update.utc.strftime("%Y-%m-%d")}\n" +
"Prawn Version: #{Prawn::VERSION}\n" +
git_commit,
:size => 12 }
--- a/manual/document_and_page_options/metadata.rb
+++ b/manual/document_and_page_options/metadata.rb
@@ -6,6 +6,7 @@
#
require File.expand_path(File.join(File.dirname(__FILE__),
%w[.. example_helper]))
+creation_date = ENV['BUILD_EPOCH'] ? Time.at(ENV['BUILD_EPOCH'].to_i) : Time.now
info = {
:Title => "My title",
@@ -14,7 +15,7 @@
:Keywords => "test metadata ruby pdf dry",
:Creator => "ACME Soft App",
:Producer => "Prawn",
- :CreationDate => Time.now
+ :CreationDate => creation_date.utc
}
Prawn::Document.generate("metadata.pdf", :info => info) do
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