[TW5] Some string manipulation filters

[Jed Carty]

I was cleaning up some of the things I have been working on over the past few months and I found some plugins that I never released. The only one is a state that is reasonable to release has some filter operators for string manipulation. I am not sure how useful people will find them but the filter operators are:

spliton - takes input titles and divides them into separate titles splitting on an input string

joinwith - the opposite of spliton, it takes a list of input titles and joins them together into a single title with the parameter string between each one

uppercase - makes all letters in the input titles uppercase

lowercase - makes all the letters in the input titles lowercase

getprefix - takes the input and returns the first n characters from each title, optionally padding them to ensure that each output title is n characters long

getsuffix - takes the input and returns the last n characters from each title, optionally padding them to ensure that each output title is n characters long

It is available from the twederbob plugin library or from the public wiki here https://www.ooktech.xyz:8443/Public#%24%3A%2Fplugins%2FOokTech%2FStringFilters

The code is available on GitHub https://github.com/OokTech/TW5-StringFilters

[TonyM]

Jed,

They look very helpful.

Perhaps they can feed into the construction of the proposed maths operators proposed in 5.1.20 because I expect there could be some overlap.

Regards

Tony

[Mohammad]

Hi Jed,

 These are great! and as Tony said there is overlap with math operators in 5.1.20pre.

Have a look at

https://tiddlywiki.com/prerelease/#Mathematics%20Operators

--Mohammad

[TonyM]

FyI

The only list of possible maths operators I can find are here https://groups.google.com/forum/?hl=en#!searchin/tiddlywiki/maths$20operators%7Csort:date/tiddlywiki/T_v5vSiCEDA/n7Rdw6fMHQAJ

In Jeremy's first post, I have underliened matching ones to jeds.

negate - negation

abs - absolute value

ceil - smallest integer greater than or equal to a given number

floor - the largest integer less than or equal to a given number

round - the value of a number rounded to the nearest integer

trunc - the integer part of a number by removing any fractional digits

sign - the sign of a number, indicating whether the number is positive, negative or zero

add - add an operand to every number in the input list

subtract - subtract an operand from every number in the input list

multiply - multiply every number in the input list by an operand

divide - divide every number in the input list by an operand

remainder - replace each item in the input list with the remainder when dividing that number by an operand

max - replace any number in the input list larger than the operand with the operand

min - replace any number in the input list smaller than the operand with the operand

fixed - formats a number using fixed-point notation with the number of fractional digits after the decimal point given by the operand

precision - returns a string representing the number to the precision specified in the operand

exponential - returns a string representing the Number object in exponential notation with the number of digits after the decimal point specified in the operand

sum - replaces the input list with the sum of all the entries

product - replaces the input list with the product of all the entries

maxall - replaces the input list with the maximum value of all the entries

minall - replaces the input list with the minimum value of all the entries

length - replaces each item in the input list with its string length in characters

uppercase - replaces each item in the input with its uppercase equivalent

lowercase - replaces each item in the input with its lowercase equivalent

trim - trims each item in the input list

concat - concatenates all of the items in the input list into a single string 

split - splits each of the items in the input list by a given separator

join - joins all of the items in the input list with a given separator see jeds joinwith

there is still an issue where the inputs have the duplicates removed

Jeds operators

spliton - takes input titles and divides them into separate titles splitting on an input string

joinwith - the opposite of spliton, it takes a list of input titles and joins them together into a single title with the parameter string between each one

uppercase - makes all letters in the input titles uppercase

lowercase - makes all the letters in the input titles lowercase

getprefix - takes the input and returns the first n characters from each title, optionally padding them to ensure that each output title is n characters long

getsuffix - takes the input and returns the last n characters from each title, optionally padding them to ensure that each output title is n characters long

Regards

Tony