Templates: various questions not worth their own thread

[chaley]

I submitted a PR with the changes to

• remove the newline() function
• add the character('name') function as an official function
• document the function
• display the special characters as escape sequences in the template editor/debugger.
• make the 'strip()' changes discussed above. This change applies only to GPM templates.

It is in source.

I implemented 'newline', 'tab', 'return', and 'backslash'. 'quote' and 'double_quote' aren't needed, and I decided to wait on 'backspace'.

[capink]

I tested with all three characters and it is working as expected. Thanks again.

[ownedbycats]

@capink Thanks for making use of my thread, I was starting to get worried I was the only one with questions

[capink]

I've had questions and requests in the past. I used the Action Chains and other threads before this thread was created.

[ownedbycats]

program:
k = field('#kobocoll');
if check_yes_no('#onkobo', 0, 1, 0) then 'sync.png' 
elif check_yes_no('#onkobo', 0, 0, 1) then
	if list_contains(k, ',', '^[Kobo Store]$', '1', '') then 'drm-locked.png'
	elif list_contains(k, ',', '^[Send to Device]$', '1', '') then 'sync.png'			
	else 'reader.png'
	fi
fi

For line 5 and 6, the presence of the square brackets makes the if statements not work and return reader.png instead. How do I fix that?

[davidfor]

Originally Posted by ownedbycats

program:
k = field('#kobocoll');
if check_yes_no('#onkobo', 0, 1, 0) then 'sync.png' 
elif check_yes_no('#onkobo', 0, 0, 1) then
	if list_contains(k, ',', '^[Kobo Store]$', '1', '') then 'drm-locked.png'
	elif list_contains(k, ',', '^[Send to Device]$', '1', '') then 'sync.png'			
	else 'reader.png'
	fi
fi

For line 5 and 6, the presence of the square brackets makes the if statements not work and return reader.png instead. How do I fix that?

I assume that is a regex. If so, you will need to escape the square brackets. Add a backslash in before them.

[capink]

Originally Posted by davidfor

I assume that is a regex. If so, you will need to escape the square brackets. Add a backslash in before them.

As @davidfor pointed out, you should escape the brackets. Also the new inlist keyword can be used instead of list_contains() function:

program:
    k = field('#kobocoll');
    if check_yes_no('#onkobo', 0, 1, 0) then 'sync.png' 
    elif check_yes_no('#onkobo', 0, 0, 1) then
	    if '^\[Kobo Store\]$' inlist k then 'drm-locked.png'
	    elif '^\[Send to Device\]$' inlist k then 'sync.png'			
	    else 'reader.png'
	    fi
    fi

[ownedbycats]

thank you

[ownedbycats]

program:
	g = field('#genres');
	k = field('#kobocoll');

	if list_contains(g, ',', '^Fanfiction$', '1', '') then
		k = list_union(k, 'Fanfiction', ',')
	fi;

	if list_contains(g, ',', '^Cozy Mystery$', '1', '') then
		k = list_union(k, 'Cozy Mysteries', ',')
	fi;

	if list_contains(g, ',', '^(Fantasy|Science Fiction)$', '1', '') then
		k = list_union(k, 'Fantasy & Sci-Fi', ',')
	fi;

	k

How would I run the first match it finds? For example, if I have a book with "Cozy Mystery" and "Fantasy" in g, I only want it to add Cozy Mysteries.

[chaley]

Originally Posted by ownedbycats

program:
	g = field('#genres');
	k = field('#kobocoll');

	if list_contains(g, ',', '^Fanfiction$', '1', '') then
		k = list_union(k, 'Fanfiction', ',')
	fi;

	if list_contains(g, ',', '^Cozy Mystery$', '1', '') then
		k = list_union(k, 'Cozy Mysteries', ',')
	fi;

	if list_contains(g, ',', '^(Fantasy|Science Fiction)$', '1', '') then
		k = list_union(k, 'Fantasy & Sci-Fi', ',')
	fi;

	k

How would I run the first match it finds? For example, if I have a book with "Cozy Mystery" and "Fantasy" in g, I only want it to add Cozy Mysteries.

Use 'elif' (else if) instead of 'if'. Assuming all three are mutually exclusive and in priority order, then this:

program:
	g = field('#genres');
	k = field('#kobocoll');

	if list_contains(g, ',', '^Fanfiction$', '1', '') then
		k = list_union(k, 'Fanfiction', ',')
	elif list_contains(g, ',', '^Cozy Mystery$', '1', '') then
		k = list_union(k, 'Cozy Mysteries', ',')
	elif list_contains(g, ',', '^(Fantasy|Science Fiction)$', '1', '') then
		k = list_union(k, 'Fantasy & Sci-Fi', ',')
	fi;

	k

EDIT: If the sequence of choices is long then the first_non_empty() function may be more appropriate than a sequence of ifs. As in:

program:
	g = field('#genres');
	k = field('#kobocoll');

	v = first_non_empty(
		list_contains(g, ',', '^Fanfiction$', 'Fanfiction', ''),
		list_contains(g, ',', '^Cozy Mystery$', 'Cozy Mysteries', ''),
		list_contains(g, ',', '^(Fantasy|Science Fiction)$', 'Fantasy & Sci-Fi', '')
	);

	list_union(k, v, ',')

[ownedbycats]

Thank you list_union would probably be more appropriate as #genres has a lot of entries.

[ownedbycats]

What would be the best way to turn my "Missing Kobo Collection" saved search into a icon for column templates?

#onkobo:true 
AND (
	#fanficcat:true 
	OR #genres:"=Fantasy" 
	OR #genres:"=Science Fiction" 
	OR #genres:"=Cozy Mystery" 
)

AND (
	#kobocoll:false 
	OR (#kobocoll:"=[Send to Device]" AND #kobocoll:#=1)
	OR (#kobocoll:"=[Kobo Store]" AND #kobocoll:#=1)
)

(btw, thanks for implementing multi-line saved searches. It's helpful )

[chaley]

Originally Posted by ownedbycats

Thank you list_union would probably be more appropriate as #genres has a lot of entries.

All of my examples used list_union().

[ownedbycats]

oops, I meant first_non_empty. parkie brain strikes again...

[chaley]

Originally Posted by ownedbycats

What would be the best way to turn my "Missing Kobo Collection" saved search into a icon for column templates?

#onkobo:true 
AND (
	#fanficcat:true 
	OR #genres:"=Fantasy" 
	OR #genres:"=Science Fiction" 
	OR #genres:"=Cozy Mystery" 
)

AND (
	#kobocoll:false 
	OR (#kobocoll:"=[Send to Device]" AND #kobocoll:#=1)
	OR (#kobocoll:"=[Kobo Store]" AND #kobocoll:#=1)
)

(btw, thanks for implementing multi-line saved searches. It's helpful )

Do you want to make the above into an if condition? If so then something like this:

program:
	if (
		$#onkobo
		&& 
		(
			$#fanficcat
			|| '^Fantasy$' inlist $#genres
			|| '^Science Fiction$' inlist $#genres
			|| '^Cozy Mystery$' inlist $#genres 
		) 
		&&
		(
			$#kobocoll == ''
			|| ( 	'^\[Send to Device\]$' inlist $#kobocoll 
					&& list_count($#kobocoll, ',') ==# 1)
			|| (	'\[Kobo Store\]$' inlist $#kobocoll 
					&& list_count($#kobocoll, ',') ==# 1)
		)
	) then
		'foo'
	fi

I made no attempt to optimize the tests. For example, the duplicated list_count can certainly be factored out.