Allow overriding the 'created' timestamp in the docprops.

Can be specified as option to Package#new:
```
Axlsx::Package.new :created_at => time
```

If omitted, the current time at the moment the document is serialized will be used. This change is therefore fully backward compatible.

1 files changed, 6 insertions, 1 deletions

diff --git a/lib/axlsx/doc_props/core.rb b/lib/axlsx/doc_props/core.rb
index d71300e0..a74031f2 100644
--- a/lib/axlsx/doc_props/core.rb
+++ b/lib/axlsx/doc_props/core.rb
@@ -8,14 +8,19 @@ module Axlsx
  
     # Creates a new Core object.
     # @option options [String] creator
+    # @option options [Time] created
     def initialize(options={})
       @creator = options[:creator] || 'axlsx'
+      @created = options[:created]
     end
 
     # The author of the document. By default this is 'axlsx'
     # @return [String]
     attr_accessor :creator
 
+    # Creation time of the document. If nil, the current time will be used.
+    attr_accessor :created
+
     # serializes the core.xml document
     # @return [String]
     def to_xml_string(str = '')
@@ -24,7 +29,7 @@ module Axlsx
       str << 'xmlns:dcmitype="' << CORE_NS_DCMIT << '" xmlns:dcterms="' << CORE_NS_DCT << '" '
       str << 'xmlns:xsi="' << CORE_NS_XSI << '">'
       str << '<dc:creator>' << self.creator << '</dc:creator>'
-      str << '<dcterms:created xsi:type="dcterms:W3CDTF">' << Time.now.strftime('%Y-%m-%dT%H:%M:%S') << 'Z</dcterms:created>'
+      str << '<dcterms:created xsi:type="dcterms:W3CDTF">' << (created || Time.now).strftime('%Y-%m-%dT%H:%M:%S') << 'Z</dcterms:created>'
       str << '<cp:revision>0</cp:revision>'
       str << '</cp:coreProperties>'
     end