Several information on one field with carriage return ?

[Archive]

[Originally posted by ashlin on 2008-08-07 12:31:53-07]

First of all, I am newbee to xmp implementation with exiftool so please understand me... I need a help.

I would like to use the `keyword` xmp field of pdf document to write 3 to 4 additionnal informations with exiftool. i'd like to write each information on a new line of this same field. When I do that with exiftool, i have got an error on updating the file. I can only write a one line information.

Now from Acrobat, i've tried the same thing. I've written these separate informations, each on a a different line into the `keyword` field, then saved the document. The metadata seems on a good format to accept the carriage return information. I've looked into the resulting binary pdf file in non-Hex mode and watched to the metadata information, seeking for my `keyword` field representation. It appears like that :

Code:

     <rdf:Description rdf:about=""
            xmlns:dc="http://purl.org/dc/elements/1.1/">
         <dc:format>application/pdf</dc:format>
         <dc:creator>
            <rdf:Bag/>
         </dc:creator>
         <dc:subject>
            <rdf:Bag>
               <rdf:li>Information 1</rdf:li>
               <rdf:li>Information 2</rdf:li>
               <rdf:li>Information 3</rdf:li>
               <rdf:li>Information 4</rdf:li>
            </rdf:Bag>
         </dc:subject>
      </rdf:Description>

Can anyone help me to understand how to reproduce a such implementation from a command line use of exiftool or simply how to implement a carriage return information on a field ?

Thanx in advance ! https://exiftool.org/forum/Smileys/default/smiley.gif" alt="Smiley" border="0" />

[Archive]

[Originally posted by ashlin on 2008-08-07 15:19:07-07]

After several kind of trials, i have noticed differents things. The resulting pdf file with 4 information line into the Keywords field with carriage return included are interpreted like that by acrobat :

Code:

     <rdf:Description rdf:about=""
            xmlns:dc="http://purl.org/dc/elements/1.1/">
         <dc:subject>
            <rdf:Bag>
               <rdf:li>Information 1</rdf:li>
               <rdf:li>Information 2</rdf:li>
               <rdf:li>Information 3</rdf:li>
               <rdf:li>Information 4</rdf:li>
            </rdf:Bag>
         </dc:subject>
      </rdf:Description>
      <rdf:Description rdf:about=""
            xmlns:pdf="http://ns.adobe.com/pdf/1.3/">
         <pdf:Keywords>Information 1&#xD;&#xA;Information 2&#xD;&#xA;Information 3&#xD;&#xA;Information 4</pdf:Keywords>
      </rdf:Description>

So I have tried to pass that command line to exiftool :

Code:

-XMP-dc:subject="Information 1" -XMP-dc:subject+="Information 2" (...) -XMP-pdf:Keywords="Information 1&#xD;&#xA;Information 2&#xD;&#xA;Information 3&#xD;&#xA;Information 4"

The result is that all `
` are converted to `&#xD;&#xA;` to appear as text, and so it failed. So the result in the pdf is :

Code:

<pdf:Keywords>Information 1&#xD;&#xA;Information 2&#xD;&#xA;Information 3&#xD;&amp;#xA;Information 4</pdf:Keywords>

I have manualy replace each `&#xD;&#xA;` by `
` and then it works. So I have now found how to implement carriage return into a field but i still don't know how I can do it from exiftool. Does anyone have an idea on how i can tell to exiftool 'don't shoot `
`' ?

[Archive]

[Originally posted by exiftool on 2008-08-15 11:34:20-07]

See http://www.cpanforum.com/threads/8332" target="_blank">this
thread for details about various techniques to include
newlines in a text value. In this thread I outline 3 possible
methods.  In your case, I would suggest method number
2 or 3.

- Phil