Padding Strings

BlitzMax Forums/BlitzMax Programming/Padding Strings

TomToad

(Posted 2016) [#1]

Need a string to be a certain length, padding with spaces if it is too short? Easy with slices. add [..length] to the string. So a[..20] will pad a with as many spaces needed to make a 20 characters long. a = "Hello World!"[..20] will make a equal to "Hello World! " (There should be 8 spaces after the !. The forum doesn't show that very well).

code example:

SuperStrict

Print "a"[..20]+":0"
Print "ab"[..20]+":0"
Print "abc"[..20]+":0"
Print "Two words"[..20]+":0"
Print "Hello World!"[..20]+":0"

result:

a                   :0
ab                  :0
abc                 :0
Two words           :0
Hello World!        :0

grable

(Posted 2016) [#2]

Have you looked at the implementations of LSet and RSet? :p

Function LSet$( str$,n )
	Return str[..n]
End Function

Function RSet$( str$,n )
	Return str[Len(str)-n..]
End Function

TomToad

(Posted 2016) [#3]

I looked for such a command and completely overlooked LSet. Thought "there might be a way to do it with slicing" so tested it out, and sure enough, the strings were padded with spaces.

FireballStarfish

(Posted 2016) [#4]

You can also add padding to the left by slicing them with a negative index.
These things work on arrays too, by the way, where the "padding" will be done with Null- or 0-Elements.