calibre EPUB->PDF: page numbers in printed TOC?

dancal · 05-29-2013, 06:00 PM

Hi, I'm converting EPUB -> PDF for printing. I got the page numbers in the footer and in the PDF bookmars, but those are useless once the book is printed. I want the page numbers in the printed TOC. Is there a way to achieve this?

Failing that is there an external tool to convert the bookmarks to a printable TOC with page numbers (so I could print that separately?)

(by the way, why isn't there a "Generic printed book" output profile?)

-- Dan

kovidgoyal · 05-29-2013, 10:07 PM

There's no way to do that, adding an option to auto-generate a toc based on the outline is on my TODO list, but it is a fairly complex task so I dont know when, or if, I will ever get around to it. Patches are welcome.

dancal · 05-29-2013, 11:06 PM

This has got to be pretty easy though. I can extract the "outline" (bookmarks) with jpdfbookmarks and print that as a separate text file.

Surely since calibre generates the PDF bookmarks, it could also include the pages in the TOC it generates at the beginning of the PDF (along with the hyperlinks, which become useless once printed)?

kovidgoyal · 05-29-2013, 11:17 PM

Quote:

Originally Posted by dancal

This has got to be pretty easy though.

Then feel free to submit a patch, and you will learn exactly why it is not so easy.

dancal · 05-29-2013, 11:31 PM

It's not such friendly software to hack into. I've lifted small bits out of it before, but it wasn't a pleasant experience. My feeling is that it tends to over-abstract, at multiple levels, which is why some simple things become extremely hard, and why you repeatedly refuse to implement some features without giving any technical explanation. They just don't fit the abstraction that was adopted early in the beginning, and changing that abstraction is impossible because there's another abstraction on top of it.

Bottom line, I believe you, and it's unfortunate you didn't implement things differently.

kovidgoyal · 05-29-2013, 11:41 PM

What rot. You have no freaking clue what you are talking about. Your lack of ability has absolutely no bearing on calibre's code quality.

Bottom line: You're lazy and you resort to whining to try to cover that up.

dancal · 05-29-2013, 11:53 PM

Either it's easy and your post #4 is a lie, or it's not so easy and your post #6 is an unjustified ad-hominem attack. Make up your mind.

I was hinting at Joel Spolsky's Law of Leaky Abstractions (http://www.joelonsoftware.com/articl...tractions.html). When you have to dig around 8-9 different files / classes to reach the bottom of a simple feature (the place where the core of that feature is actually implemented) it's likely that there is a bit of over-abstracting going on. And it's also rational for anyone not to waste time again trying to reverse-engineer the convoluted design of calibre.

Since the problem is so clear to you, you could have said "look at source /path/to/x.py". Why should someone else waste time tracking down something that you know off the top of your head? Software doesn't need to read like a puzzle.

kovidgoyal · 05-30-2013, 12:03 AM

Let me explain something to you: when I say something is not easy, that means the ratio of effort to interest involved in implementing it moves it off the top of my queue compared to the 3000 other things in that queue that have better effort to interest ratios.

Actually implementing this feature will take about 300 lines of code, the relevant files are all in the pdf/render/ folder and there is a grand total of five classes involved. But, I'm guessing that's too hard for you, because, as I said before, you are lazy. Or perhaps when you were a baby you were attacked by a particularly mean looking class.

And let me explain something about abstractions. All abstractions are, gasp, *leaky*, that does not mean every abstraction is bad. It is only bad if the harm from the leakiness outweighs the benefit from the, wait for it, *abstraction*.

dancal · 05-30-2013, 01:13 AM

As a simple work-around, here's a one-liner to generate a separate TOC.pdf (which you can then prepend to the main PDF, or print):

Code:

jpdfbookmarks -p'|' -d FILE.pdf | perl -ne 'if (/(.*)\|(\d+)/) { printf "%5d  %s\n", $2, $1 }' | a2ps -B -1 -o - | ps2pdf - /tmp/TOC.pdf

Kovid, feel free to disregard my observations if they made you angry (no point in spamming others, so I won't argue any further). Whatever your feelings, I don't see why you should be calling names someone who chooses not to contribute to your open-source baby. But whatever makes you feel powerful...

kovidgoyal · 05-30-2013, 01:19 AM

Just for your future reference:

When you ask someone to do something for you, for free, and that someone says they will get to it whenever they have the time/inclination, the appropriate response is not to malign their work. If you do, you will get *flamed*. I was positively gentle with you.

kovidgoyal · 05-30-2013, 03:40 AM

Just to prove what I said in my previous post, here's the implementation, in less than 300 lines, including documentation and GUI.

https://github.com/kovidgoyal/calibr...cb158a2e093f99

dancal · 06-08-2013, 03:33 PM

I did not *ask* you to do anything for free. I tried to *shame* you into doing something that should have been done a long time ago -- and I guess it worked. Thanks, by the way. As I've posted I've solved my problem with a one-line script though,.

I guess this was indeed not a case of leaky abstractions -- but that doesn't mean your baby doesn't suffer from it.

Feel free to insult me some more -- it won't do you or me any good of course.

kovidgoyal · 06-08-2013, 09:49 PM

Quote:

Originally Posted by dancal

I did not *ask* you to do anything for free. I tried to *shame* you into doing something that should have been done a long time ago.

You really are toxic little man, aren't you.

Quote:

-- and I guess it worked. Thanks, by the way. As I've posted I've solved my problem with a one-line script though.

A one line script that uses thousands of lines of code from another software project, impressive.

Quote:

I guess this was indeed not a case of leaky abstractions -- but that doesn't mean your baby doesn't suffer from it.

Of course it does, because, you say so, and as this thread has amply demonstrated, you certainly know what you're talking about.

Quote:

Feel free to insult me some more -- it won't do you or me any good of course.

Happy to oblige.

>/dev/null

dancal · 06-13-2013, 08:32 PM

Sorry for the flame war. It was not warranted.

Your project also uses 1000's of lines from other projects, right? That's how libraries work (but I prefer the arms-length separation that the CLI requires).

We've had dealings in the past. Remember that annoying "Not going to happen" comment? You are a pretty obnoxious individual yourself.

05-29-2013, 06:00 PM	#1
dancal Member Posts: 16 Karma: 10 Join Date: Dec 2012 Device: PC	calibre EPUB->PDF: page numbers in printed TOC? Hi, I'm converting EPUB -> PDF for printing. I got the page numbers in the footer and in the PDF bookmars, but those are useless once the book is printed. I want the page numbers in the printed TOC. Is there a way to achieve this? Failing that is there an external tool to convert the bookmarks to a printable TOC with page numbers (so I could print that separately?) (by the way, why isn't there a "Generic printed book" output profile?) -- Dan

05-29-2013, 11:53 PM	#7
dancal Member Posts: 16 Karma: 10 Join Date: Dec 2012 Device: PC	Either it's easy and your post #4 is a lie, or it's not so easy and your post #6 is an unjustified ad-hominem attack. Make up your mind. I was hinting at Joel Spolsky's Law of Leaky Abstractions (http://www.joelonsoftware.com/articl...tractions.html). When you have to dig around 8-9 different files / classes to reach the bottom of a simple feature (the place where the core of that feature is actually implemented) it's likely that there is a bit of over-abstracting going on. And it's also rational for anyone not to waste time again trying to reverse-engineer the convoluted design of calibre. Since the problem is so clear to you, you could have said "look at source /path/to/x.py". Why should someone else waste time tracking down something that you know off the top of your head? Software doesn't need to read like a puzzle. Last edited by dancal; 05-29-2013 at 11:56 PM.

05-30-2013, 01:13 AM	#9
dancal Member Posts: 16 Karma: 10 Join Date: Dec 2012 Device: PC	As a simple work-around, here's a one-liner to generate a separate TOC.pdf (which you can then prepend to the main PDF, or print): Code: jpdfbookmarks -p'\|' -d FILE.pdf \| perl -ne 'if (/(.*)\\|(\d+)/) { printf "%5d %s\n", $2, $1 }' \| a2ps -B -1 -o - \| ps2pdf - /tmp/TOC.pdf Kovid, feel free to disregard my observations if they made you angry (no point in spamming others, so I won't argue any further). Whatever your feelings, I don't see why you should be calling names someone who chooses not to contribute to your open-source baby. But whatever makes you feel powerful...

06-08-2013, 03:33 PM	#12
dancal Member Posts: 16 Karma: 10 Join Date: Dec 2012 Device: PC	I did not ask you to do anything for free. I tried to shame you into doing something that should have been done a long time ago -- and I guess it worked. Thanks, by the way. As I've posted I've solved my problem with a one-line script though,. I guess this was indeed not a case of leaky abstractions -- but that doesn't mean your baby doesn't suffer from it. Feel free to insult me some more -- it won't do you or me any good of course. Last edited by dancal; 06-08-2013 at 03:38 PM.

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05-29-2013, 10:07 PM	#2
kovidgoyal creator of calibre Posts: 45,199 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	There's no way to do that, adding an option to auto-generate a toc based on the outline is on my TODO list, but it is a fairly complex task so I dont know when, or if, I will ever get around to it. Patches are welcome.

05-29-2013, 11:06 PM	#3
dancal Member Posts: 16 Karma: 10 Join Date: Dec 2012 Device: PC	This has got to be pretty easy though. I can extract the "outline" (bookmarks) with jpdfbookmarks and print that as a separate text file. Surely since calibre generates the PDF bookmarks, it could also include the pages in the TOC it generates at the beginning of the PDF (along with the hyperlinks, which become useless once printed)?

05-29-2013, 11:31 PM	#5
dancal Member Posts: 16 Karma: 10 Join Date: Dec 2012 Device: PC	It's not such friendly software to hack into. I've lifted small bits out of it before, but it wasn't a pleasant experience. My feeling is that it tends to over-abstract, at multiple levels, which is why some simple things become extremely hard, and why you repeatedly refuse to implement some features without giving any technical explanation. They just don't fit the abstraction that was adopted early in the beginning, and changing that abstraction is impossible because there's another abstraction on top of it. Bottom line, I believe you, and it's unfortunate you didn't implement things differently.

05-29-2013, 11:41 PM	#6
kovidgoyal creator of calibre Posts: 45,199 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	What rot. You have no freaking clue what you are talking about. Your lack of ability has absolutely no bearing on calibre's code quality. Bottom line: You're lazy and you resort to whining to try to cover that up.

05-30-2013, 12:03 AM	#8
kovidgoyal creator of calibre Posts: 45,199 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Let me explain something to you: when I say something is not easy, that means the ratio of effort to interest involved in implementing it moves it off the top of my queue compared to the 3000 other things in that queue that have better effort to interest ratios. Actually implementing this feature will take about 300 lines of code, the relevant files are all in the pdf/render/ folder and there is a grand total of five classes involved. But, I'm guessing that's too hard for you, because, as I said before, you are lazy. Or perhaps when you were a baby you were attacked by a particularly mean looking class. And let me explain something about abstractions. All abstractions are, gasp, leaky, that does not mean every abstraction is bad. It is only bad if the harm from the leakiness outweighs the benefit from the, wait for it, abstraction.

05-30-2013, 01:19 AM	#10
kovidgoyal creator of calibre Posts: 45,199 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Just for your future reference: When you ask someone to do something for you, for free, and that someone says they will get to it whenever they have the time/inclination, the appropriate response is not to malign their work. If you do, you will get flamed. I was positively gentle with you.

05-30-2013, 03:40 AM	#11
kovidgoyal creator of calibre Posts: 45,199 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Just to prove what I said in my previous post, here's the implementation, in less than 300 lines, including documentation and GUI. https://github.com/kovidgoyal/calibr...cb158a2e093f99

06-13-2013, 08:32 PM	#14
dancal Member Posts: 16 Karma: 10 Join Date: Dec 2012 Device: PC	Sorry for the flame war. It was not warranted. Your project also uses 1000's of lines from other projects, right? That's how libraries work (but I prefer the arms-length separation that the CLI requires). We've had dealings in the past. Remember that annoying "Not going to happen" comment? You are a pretty obnoxious individual yourself.

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