Sigil and Adobe Digital Editions

Artha · 08-07-2011, 07:12 AM

Bear with me as I do not know the internals of Epub or the variations in implementation in theese two applications.

Some of my books made with Sigil (the stable version) are not opened by ADE. Later, it seems that my new reader uses ADE. And I have noticed that even the beta of Sigil can do that. From 5 different HTMLs I got 5 EPUBs. 2 of them work, 3 of them do not open. Well, the reader does show them in its list with proper author and title, yet the pagecount is 0.

Is there a way to restrict Sigil to a subset that can be understood by ADE?

user_none · 08-07-2011, 09:22 AM

Have you used the internal validator to ensure your EPUBs conform to the spec?

Run the internal FlightCrew validation check (the green check mark on the toolbar) and see if it reports any errors on the three that do not open. Many errors are non-trivial and cannot be automatically corrected (they require human interaction). The best that can be done is they're detected and reported for you to fix.

Toxaris · 08-07-2011, 03:49 PM

Agree, creating an ePub is not a 'one button' process.

charleski · 08-07-2011, 07:32 PM

If you want, you can open an issue on the tracker and upload one of the epubs that failed to open in ADE. But I'm willing to bet hard cash that the problem lies with invalid code in the epub that would be spotted by FlightCrew.

Artha · 08-08-2011, 04:37 PM

I have rechecked one of the files. And it seems to be a mess. Reopened by Sigil (both beta and stable) it does not show any file under "text". Yet that HTML is quite Ok from a quick check. And the text file is in the right place once I open the epub in a zip tool. Sadly, I can't share it as it is copyrighted work and that is a private copy. And, for the time, I can't investigate it any further by generating a dummy HTML and trying to come up with the same results.

Artha · 08-08-2011, 04:38 PM

Oh, and I can't test it as even Sigil can't open it fine.

Danger · 08-08-2011, 05:53 PM

I had a couple books like that. I found that if I opened up the book with Calibre and then copied that book from the calibre library. It would then open up just fine with Sigil and my eReader.

Now having said that I only ever had this problem with v0.4.0 RC1 and not with 0.3.4

Toxaris · 08-09-2011, 03:04 AM

You can always try to run it through FlightCrew standalone to see if you get any errors. If so, we have a lead.

DaleDe · 08-09-2011, 01:06 PM

Quote:

Originally Posted by Artha

Bear with me as I do not know the internals of Epub or the variations in implementation in theese two applications.

Some of my books made with Sigil (the stable version) are not opened by ADE. Later, it seems that my new reader uses ADE. And I have noticed that even the beta of Sigil can do that. From 5 different HTMLs I got 5 EPUBs. 2 of them work, 3 of them do not open. Well, the reader does show them in its list with proper author and title, yet the pagecount is 0.

Is there a way to restrict Sigil to a subset that can be understood by ADE?

Clearly running epub checking programs will likely find the problem but as a matter of course it would be nice if Sigil had a button that could launch a reader of the users choice. Sigil can't do very good job of testing the display of a document since it doesn't break it into pages. If the users reader of choice could be launched from inside Sigil then it would be easy to visually check some features. It would also let Sigil know the database was opened elsewhere so it wouldn't try and save it until the application was stopped.

Dale

user_none · 08-09-2011, 01:17 PM

Quote:

Originally Posted by DaleDe

Sigil can't do very good job of testing the display of a document since it doesn't break it into pages.

That's because EPUB is a reflowable pageless format. Any "pages" are pseudo added by the reader software. Even the page count given by ADE is an Adobe invention and not part of the EPUB spec.

Quote:

Originally Posted by DaleDe

If the users reader of choice could be launched from inside Sigil then it would be easy to visually check some features.

This really isn't useful. Calibre, and FBReader for instance use a single flow view by default. Writing for a specific reader app is a really bad idea. Also, ADE on the desktop rendering isn't guaranteed to be the same on a physical device. Not to mention different versions of ADE on devices can render differently.

Jellby · 08-09-2011, 02:12 PM

Quote:

Originally Posted by user_none

That's because EPUB is a reflowable pageless format.

But there are provisions for paged media, like @page, page-break-before, and even the unimplemented oeb-page-head.

Toxaris · 08-09-2011, 02:28 PM

But not al rendering engines support those. @page for example does not work on iBooks. Not that iBooks is a classroom example of how it should of course.

user_none · 08-09-2011, 02:37 PM

The point remains that having the ability to pause Sigil to check in a reading app is not a very helpful feature. Currently you can save, leave Sigil open and then open the file in the reading app. There is no reason for Sigil to do this for you. Also, There is so much variation in reading software and devices that I don't see testing on a computer being helpful when most readers will be using a device that can only be tested on the device itself.

Artha · 08-09-2011, 04:20 PM

And this is the result:

Code:

This OPS document is reachable but not present in the OPF <spine>.
This resource is reachable but not present in the OPF <manifest>.

Both line refer to the main htm file.

user_none · 08-09-2011, 04:27 PM

Quote:

Originally Posted by Artha

And this is the result:

Code:

This OPS document is reachable but not present in the OPF <spine>.
This resource is reachable but not present in the OPF <manifest>.

Both line refer to the main htm file.

What version of Sigil and what OS are you using? There is a bug in 0.4.0 RC 1 on OS X and earlier that would cause erroneous errors like this.

If that bug doesn't apply then the file is not properly built because the main HTML inside is not properly referenced.

08-07-2011, 07:12 AM	#1
Artha ----- Posts: 114 Karma: 10 Join Date: Jun 2011 Device: Samsung SNE65	Sigil and Adobe Digital Editions Bear with me as I do not know the internals of Epub or the variations in implementation in theese two applications. Some of my books made with Sigil (the stable version) are not opened by ADE. Later, it seems that my new reader uses ADE. And I have noticed that even the beta of Sigil can do that. From 5 different HTMLs I got 5 EPUBs. 2 of them work, 3 of them do not open. Well, the reader does show them in its list with proper author and title, yet the pagecount is 0. Is there a way to restrict Sigil to a subset that can be understood by ADE?

08-09-2011, 04:20 PM	#14
Artha ----- Posts: 114 Karma: 10 Join Date: Jun 2011 Device: Samsung SNE65	Sarted FlighCrew standalone and And this is the result: Code: This OPS document is reachable but not present in the OPF <spine>. This resource is reachable but not present in the OPF <manifest>. Both line refer to the main htm file.

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08-07-2011, 09:22 AM	#2
user_none Sigil & calibre developer Posts: 2,487 Karma: 1063785 Join Date: Jan 2009 Location: Florida, USA Device: Nook STR	Have you used the internal validator to ensure your EPUBs conform to the spec? Run the internal FlightCrew validation check (the green check mark on the toolbar) and see if it reports any errors on the three that do not open. Many errors are non-trivial and cannot be automatically corrected (they require human interaction). The best that can be done is they're detected and reported for you to fix.

08-07-2011, 03:49 PM	#3
Toxaris Wizard Posts: 4,520 Karma: 121692313 Join Date: Oct 2009 Location: Heemskerk, NL Device: PRS-T1, Kobo Touch, Kobo Aura	Agree, creating an ePub is not a 'one button' process.

08-07-2011, 07:32 PM	#4
charleski Wizard Posts: 1,196 Karma: 1281258 Join Date: Sep 2009 Device: PRS-505	If you want, you can open an issue on the tracker and upload one of the epubs that failed to open in ADE. But I'm willing to bet hard cash that the problem lies with invalid code in the epub that would be spotted by FlightCrew.

08-08-2011, 04:37 PM	#5
Artha ----- Posts: 114 Karma: 10 Join Date: Jun 2011 Device: Samsung SNE65	I have rechecked one of the files. And it seems to be a mess. Reopened by Sigil (both beta and stable) it does not show any file under "text". Yet that HTML is quite Ok from a quick check. And the text file is in the right place once I open the epub in a zip tool. Sadly, I can't share it as it is copyrighted work and that is a private copy. And, for the time, I can't investigate it any further by generating a dummy HTML and trying to come up with the same results.

08-08-2011, 04:38 PM	#6
Artha ----- Posts: 114 Karma: 10 Join Date: Jun 2011 Device: Samsung SNE65	Oh, and I can't test it as even Sigil can't open it fine.

08-08-2011, 05:53 PM	#7
Danger Evangelist Posts: 490 Karma: 1665031 Join Date: Nov 2010 Location: Vancouver Island, Nanaimo Device: K2 (retired), Kobo Touch (passed to the wife), KGlo, Galaxy TabPro	I had a couple books like that. I found that if I opened up the book with Calibre and then copied that book from the calibre library. It would then open up just fine with Sigil and my eReader. Now having said that I only ever had this problem with v0.4.0 RC1 and not with 0.3.4

08-09-2011, 03:04 AM	#8
Toxaris Wizard Posts: 4,520 Karma: 121692313 Join Date: Oct 2009 Location: Heemskerk, NL Device: PRS-T1, Kobo Touch, Kobo Aura	You can always try to run it through FlightCrew standalone to see if you get any errors. If so, we have a lead.

08-09-2011, 02:28 PM	#12
Toxaris Wizard Posts: 4,520 Karma: 121692313 Join Date: Oct 2009 Location: Heemskerk, NL Device: PRS-T1, Kobo Touch, Kobo Aura	But not al rendering engines support those. @page for example does not work on iBooks. Not that iBooks is a classroom example of how it should of course.

08-09-2011, 02:37 PM	#13
user_none Sigil & calibre developer Posts: 2,487 Karma: 1063785 Join Date: Jan 2009 Location: Florida, USA Device: Nook STR	The point remains that having the ability to pause Sigil to check in a reading app is not a very helpful feature. Currently you can save, leave Sigil open and then open the file in the reading app. There is no reason for Sigil to do this for you. Also, There is so much variation in reading software and devices that I don't see testing on a computer being helpful when most readers will be using a device that can only be tested on the device itself.

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