Templates: various questions not worth their own thread

[ownedbycats]

program:	

subjects = $#subjects;
admintags = $#admintags;
existing_colls = $#kobocoll;

	new_colls = strcat(	
		if $#booktype=='Fanfiction' then 'Fanfiction,' fi,
		if '^Cozy Mystery$' inlist subjects then 'Cozy Mysteries,' fi,
		if '^Horses$' inlist subjects then 'Horses,' fi,
		if '(Juvenile|Young Adult)' inlist subjects then 'Juvenile & Young Adults,' fi,
		if '^(Fantasy|Paranormal|Science Fiction)$' inlist subjects && !'Star Trek' inlist subjects then 'Fantasy & Sci-Fi,' fi,
		if '^Star Trek$' inlist subjects then 'Star Trek,' fi,
		if 'Omnibus' in admintags then 'Omnibuses' fi,
	);

Line 12, can be done without the extra inlist?

[chaley]

Originally Posted by ownedbycats

program:	

subjects = $#subjects;
admintags = $#admintags;
existing_colls = $#kobocoll;

	new_colls = strcat(	
		if $#booktype=='Fanfiction' then 'Fanfiction,' fi,
		if '^Cozy Mystery$' inlist subjects then 'Cozy Mysteries,' fi,
		if '^Horses$' inlist subjects then 'Horses,' fi,
		if '(Juvenile|Young Adult)' inlist subjects then 'Juvenile & Young Adults,' fi,
		if '^(Fantasy|Paranormal|Science Fiction)$' inlist subjects && !'Star Trek' inlist subjects then 'Fantasy & Sci-Fi,' fi,
		if '^Star Trek$' inlist subjects then 'Star Trek,' fi,
		if 'Omnibus' in admintags then 'Omnibuses' fi,
	);

Line 12, can be done without the extra inlist?

Yes, it can be done but it is complicated and probably slower. It would be some combination of list_intersection and list_count. It could be done as a python template used as a function, something like

check_inlist_field(field, values required, values_not_allowed)

but I don't see a pressing need here.

You should use "inlist_field '#subjects'" instead of "inlist subjects".

I also suggest you use parentheses on line 12 to avoid any possibility of operator precidence being what you don't want. Example:

if ('^(Fantasy|Paranormal|Science Fiction)$' inlist_field '#subjects') && (!('Star Trek' inlist_field '#subjects')) then 'Fantasy & Sci-Fi,' fi,

[ownedbycats]

I have this to display icons for formats, and an unknown icon if none are present:

program: 

formats = approximate_formats();

   strcat
   (
		if "azw3" inlist formats then 'formats_azw3.png:' fi,
		if "cbz" inlist formats then 'formats_cbz.png:' fi,	
		if "epub" inlist formats then 'formats_epub.png:' fi,
		if "html" inlist formats then 'formats_html.png:' fi,
		if "mobi" inlist formats then 'formats_mobi.png:' fi,
		if "paperbook" inlist formats then 'formats_paperbook.png:' fi,
		if "pdf" inlist formats then 'formats_pdf.png:' fi,	
		if "txt" inlist formats then 'formats_txt.png:' fi,	
		if "(overdrive|paperloan)" inlist formats then 'formats_overdrive.png:' fi,	

		if list_difference(formats, 'azw3, cbz, epub, html, mobi, paperbook, pdf, txt, overdrive, paperloan', ',') then 'formats_unknown.png' fi	
   )

Very repetitive. Except for paperloan, Is there a way to regex this to a single line, and would be any faster?

[BetterRed]

Maybe there's a way to use the png's in the ???\resources\images\mimetypes folder, where the image names are the format file types - e.g. epub.png, pdf.png etc.

BR

[ownedbycats]

Yeah, I copied most icons from there (except paperbook and overdrive).

[chaley]

This isn't as repetitive, but is a bit harder to understand.

program: 
	def add_icon_name(res, fmt):
		return res & 'formats_' & fmt & '.png:'
	fed;

	result = '';
	formats = approximate_formats();
	formats_for_book = list_intersection('azw3, cbz, epub, html, mobi, paperbook, pdf, txt', formats, ',');
	for format in formats_for_book:
		result = add_icon_name(result, format)
	rof;
	if "(overdrive|paperloan)" inlist formats then result = add_icon_name(result, 'overdrive') fi;
	if list_difference(formats, formats_for_book & ',overdrive,paperloan', ',') then
		result = add_icon_name(result, 'unknown')
	fi;
	re(result, ':$', '')

[ownedbycats]

{title_sort:'contains(t=uppercase(re($, '^\W*(\w).*$','\1')), '\d', '0-9', t)'}

In a column, this has the first letter of a title (0-9 are combined). An accented letter (É) displays separate than the standard one (E). Is there a way to merge them?

EDIT: Got it (not sure if transliterate should come before or after uppercase).

{title_sort:'contains(t=uppercase(transliterate(re($, '^\W*(\w).*$','\1'))), '\d', '0-9', t)'}

[jonnyl]

I'm not sure if questions about Cover generator templates are appropriate here, but here is my question:

I'd like add an extra line in the footer showing the publish date (pubdate) in a smaller font.

The current footer template is this (it shows up to two authors):

program:
# Show at most two authors, on separate lines.
authors = field('authors');
num = count(authors, ' & ');
authors = sublist(authors, 0, 2, ' & ');
authors = list_re(authors, ' &amp; ', '(.+)', '<b>\1');
authors = re(authors, ' &amp; ', '<br>');
re(authors, '&amp;&amp;', '&amp;')

What code would I have to add? Thanks for any help.

[chaley]

Originally Posted by jonnyl

I'm not sure if questions about Cover generator templates are appropriate here, but here is my question:

I'd like add an extra line in the footer showing the publish date (pubdate) in a smaller font.

The current footer template is this (it shows up to two authors):

program:
# Show at most two authors, on separate lines.
authors = field('authors');
num = count(authors, ' & ');
authors = sublist(authors, 0, 2, ' & ');
authors = list_re(authors, ' &amp; ', '(.+)', '<b>\1');
authors = re(authors, ' &amp; ', '<br>');
re(authors, '&amp;&amp;', '&amp;')

What code would I have to add? Thanks for any help.

I haven't tested this in the cover generator but something like it should be close.

program:
# Show at most two authors on separate lines. followed by the pubdate
	authors = sublist($authors, 0, 2, ' & ');
	authors = re(authors, ' & ', '<br>');
	strcat(authors, '<br><small>', $pubdate, '</small>')

[jonnyl]

Thank you! It doesn't make the font smaller, but it looks fine, so no biggie.

[chaley]

Originally Posted by chaley

I haven't tested this in the cover generator but something like it should be close.

program:
# Show at most two authors on separate lines. followed by the pubdate
	authors = sublist($authors, 0, 2, ' & ');
	authors = re(authors, ' & ', '<br>');
	strcat(authors, '<br><small>', $pubdate, '</small>')

Originally Posted by jonnyl

Thank you! It doesn't make the font smaller, but it looks fine, so no biggie.

Perhaps someone else who is familiar with inline CSS styles can provide something that works.

[Far_Pen_6884]

I'm attempting to display word_count with "K" and "M" suffixes for thousands and millions, respectively. However, I'm encountering an issue saying "TEMPLATE ERROR could not convert string to float". How can I fix the template to work as intended?

program:
  switch(
    field('#word_count') >= 1000000, format_number(field('#word_count') / 1000000, '{:.1f}') + ' M',
    field('#word_count') >= 1000, format_number(field('#word_count') / 1000, '{:.1f}') + ' K',
    field('#word_count')
  )

Another question. If I were to ask this on Codidact or StackOverflow, what tags should I use? Should I tag it as `calibre template`, or is there a programming language that uses the same syntax that I should tag instead?

[chaley]

Originally Posted by Far_Pen_6884

I'm attempting to display word_count with "K" and "M" suffixes for thousands and millions, respectively. However, I'm encountering an issue saying "TEMPLATE ERROR could not convert string to float". How can I fix the template to work as intended?

program:
  switch(
    field('#word_count') >= 1000000, format_number(field('#word_count') / 1000000, '{:.1f}') + ' M',
    field('#word_count') >= 1000, format_number(field('#word_count') / 1000, '{:.1f}') + ' K',
    field('#word_count')
  )

The plus sign is not a string concatenation operator. Use & or strcat() instead. Note also that your comparisons won't work because >= is a lexical comparison, not a numeric comparison. Use =>#. The first_matching_cmp() function is more efficient than a series of relational expressions, as is using the short form of field ($lookup_name)

I suggest you read the template language manual.

Example:

program:
  first_matching_cmp($#word_count,
    1000, $#word_count,
    1000000, format_number($#word_count / 1000, '{:.1f}') & ' K',
    format_number($#word_count / 1000000, '{:.1f}') & ' M'
  )

Another question. If I were to ask this on Codidact or StackOverflow, what tags should I use? Should I tag it as `calibre template`, or is there a programming language that uses the same syntax that I should tag instead?

All three of the calibre template languages are specific to calibre. General Program Mode is syntactically similar to Algol68 and is semantically similar to many non-coercing non-object-oriented languages out there.

[ownedbycats]

Copy to Clipboard action to string together several columns and produce a preformatted string to paste into FanFicFare's personal.ini:

program:

authortitle = strcat('## ', $author, ' - ', $title);
storyid = strcat('(', $id, ')');
storyUrl = 	switch_if(
				$publisher=='Archive of Our Own', strcat('https://archiveofourown.org/works/', select($identifier, 'ao3')),
				$publisher=='FanFiction.net', strcat('https://www.fanfiction.net/s/', select($identifier, 'ffnet'), '/1/'),
				''
			);
settings = $$#fanficsettings;

copySection = strcat(authortitle, ' ', storyid, character('newline'), '[', storyUrl, ']',character('newline'),settings)

If #fanficsettings is undefined, it copies 'None'. Is it possible to omit this instead?

[chaley]

Originally Posted by ownedbycats

program:
[...]
settings = $$#fanficsettings;

copySection = strcat(authortitle, ' ', storyid, character('newline'), '[', storyUrl, ']',character('newline'),settings)

If #fanficsettings is undefined, it copies 'None'. Is it possible to omit this instead?

Use the standard field getter $#fanficsettings. If for some reason you must use the raw field getter then use the raw_field() function with a default as in raw_field('#fanficsettings', '')