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Old 05-25-2014, 09:07 PM   #1
mikapanja
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OPF Errors
@ kovid

1) According to Open Packaging Format (OPF) 2.0.1 v1.0.1 spec,

"The spine element must include the toc attribute, whose value is the id attribute value of the required NCX document declared in manifest."

In other words, there has to be a <spine toc="ncx">, not just <spine>.

I have a book with just a <spine> element (opening tag), and after Check Book there is no warning of this error. Could this be included in Calibre checks?


2) Another book with .opf file starting with:

<?xml version="1.0"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"[]>

Sigil reports "Invalid OPF file", but no error after Check Book. Is it an error or not? If yes, could the DOCTYPE start be reported as one, and users offered a replacement with <?xml version='1.0' encoding='utf-8'?>?

Thanx
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Old 05-25-2014, 10:32 PM   #2
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1) My philosophy with Check Book is not to blindly report deviations from the spec, but only report errors that are know to actually cause problems with reading programs. Not including that attibute on spine causes no actual problems, that I know of. For blind spec checking, plenty of tools already exist.

2) Unfortunately, because of the way XML parsing works in check book, detecting DOCTYPE errors is not possible. See how DOCTYPES are automatically removed by calibre (click the beautify button in the opf file).

I could of course write a specialized parsing routine to detect DOCTYPE errors, but this is too much work, at east for me.
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Old 05-25-2014, 11:26 PM   #3
mikapanja
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mikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentameter
 
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@ kovid

Thank you for the quick answer.

Quote:
Originally Posted by kovidgoyal View Post
For blind spec checking, plenty of tools already exist.
What is the best tool for that, in your opinion?
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Old 05-25-2014, 11:30 PM   #4
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I have no idea, I never use blind spec checking tools myself. I find them to be pretty useless. They will tell your about three thousand "errors" that cause no actual problems and miss the one error that will, because it is not part of the "spec".
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Old 05-26-2014, 06:51 AM   #5
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Quote:
Originally Posted by mikapanja View Post
@ kovid

Thank you for the quick answer.



What is the best tool for that, in your opinion?
http://validator.idpf.org/
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Old 05-26-2014, 09:49 AM   #6
mikapanja
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mikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentametermikapanja can solve quadratic equations while standing on his or her head reciting poetry in iambic pentameter
 
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Quote:
Originally Posted by JLius View Post
Thanx, JLius, I'll give it a try.
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