can calibre creat a TOC by reading numerals as chapter marks

p3aul · 09-30-2010, 11:15 PM

I have a rather long book in txt format and I don't want to go to the hassle of putting two # marks in from of each numbered chapter in order to use --markdown. I wonder if I could use xpath statement to detect numerals on a line by themselves as chapter marks. If so could someone tell me how to format them?
Thanks
P3aul (pronounced "Paul", the 3 is silent)

ldolse · 09-30-2010, 11:26 PM

Try enabling preprocessing under structure detection when you do the conversion. You'll also need to change the chapter detection xpath to look for \d+ instead of Chapter|Part, etc

p3aul · 10-03-2010, 02:12 PM

Can you tell me the exact location in pref to do this?
Thanks,
Paul

Manichean · 10-03-2010, 04:03 PM

It's in the structure detection part of the conversion settings.

ldolse · 10-03-2010, 09:49 PM

You'll also need to change the chapter detection xpath. Change the default to this:

Code:

//h:h2[re:test(., "\d+", "i")]

Manichean · 10-04-2010, 03:51 AM

Quote:

Originally Posted by ldolse

You'll also need to change the chapter detection xpath. Change the default to this:

Code:

//h:h2[re:test(., "\d+", "i")]

Now you confused me- doesn't that test for the presence of numerals inside an h2 tag pair?

ldolse · 10-04-2010, 04:03 AM

Quote:

Originally Posted by Manichean

Now you confused me- doesn't that test for the presence of numerals inside an h2 tag pair?

That's exactly what it does. Preprocessing just wraps the numerals in h2 tags, it doesn't tell Calibre's chapter detection routines that those are actually chapters.

The default chapter detection xpath is:

Code:

//*[((name()='h1' or name()='h2') and re:test(., 'chapter|book|section|part\s+', 'i')) or @class = 'chapter']

So that won't match numeric chapter headings. The book would get page breaks inserted at the H2 tags (based on the insert page breaks before default setting), so in an epub for example you would have one split file per chapter, but there would be no TOC.

You could just change one part of the xpath - 'chapter|book|section|part\s+' to '\d+' or '.*', but I used the xpath wizard, which spit out the xpath I posted previously.

Manichean · 10-04-2010, 04:18 AM

Quote:

Originally Posted by ldolse

That's exactly what it does. Preprocessing just wraps the numerals in h2 tags, it doesn't tell Calibre's chapter detection routines that those are actually chapters.

Ah. I missed the preprocessing part when thinking about it.

09-30-2010, 11:15 PM	#1
p3aul Captain Courageous Posts: 239 Karma: 102 Join Date: Apr 2009 Device: calibre, PRS 505	can calibre creat a TOC by reading numerals as chapter marks I have a rather long book in txt format and I don't want to go to the hassle of putting two # marks in from of each numbered chapter in order to use --markdown. I wonder if I could use xpath statement to detect numerals on a line by themselves as chapter marks. If so could someone tell me how to format them? Thanks P3aul (pronounced "Paul", the 3 is silent)

10-03-2010, 09:49 PM	#5
ldolse Wizard Posts: 1,337 Karma: 123455 Join Date: Apr 2009 Location: Malaysia Device: PRS-650, iPhone	You'll also need to change the chapter detection xpath. Change the default to this: Code: //h:h2[re:test(., "\d+", "i")] Last edited by ldolse; 10-03-2010 at 09:53 PM.

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09-30-2010, 11:26 PM	#2
ldolse Wizard Posts: 1,337 Karma: 123455 Join Date: Apr 2009 Location: Malaysia Device: PRS-650, iPhone	Try enabling preprocessing under structure detection when you do the conversion. You'll also need to change the chapter detection xpath to look for \d+ instead of Chapter\|Part, etc

10-03-2010, 02:12 PM	#3
p3aul Captain Courageous Posts: 239 Karma: 102 Join Date: Apr 2009 Device: calibre, PRS 505	Can you tell me the exact location in pref to do this? Thanks, Paul

10-03-2010, 04:03 PM	#4
Manichean Wizard Posts: 3,130 Karma: 91256 Join Date: Feb 2008 Location: Germany Device: Cybook Gen3	It's in the structure detection part of the conversion settings.

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