On May 25, 2011, at 3:11 AM, Keith Clarke wrote:
A simple requirement but I'm struggling with getting the structure
and syntax needed to replace only the first space character in each
line of a variable with a tab.
I have a field of label-value pairs - and some of the values contain
spaces. This creates problems if I attempt a blanket approach of
'replace space in tVariable' with tab.
So, I tried iterating through each tLine of tVariable but get a
runtime error with 'replace space 1 in line tline with tab'. So, I'm
guessing that 'space' can't be used to set chunk expression scope.
So, within each line, I'm iterating at character-level, with 'repeat
for each character tChar in the line, if tChar is space then...
I've tried 'replace tChar with tab' and 'add tab after tChar' and
then 'delete tChar' but I get errors - probably because I'm trying
to delete the reference variable(?)
I'm sure there is a nice efficient way to do this, so any advice on
structure, syntax or command usage would be greatly appreciated.
There are a few approaches (working code below)
repeat for each line LNN in labelValueList
put word 1 & tab & word 2 to -1 of LNN & cr after newList
end repeat
filter newList without tab --optional for tab-only lines
filter newList without empty --optional for 0 char lines
--- specific comments
I'm guessing that 'space' can't be used to set chunk expression
scope.
The chunk expression 'word' means 'space' as well as other white space
chars
get word 3 of line 4 of fld 5
If you wanted SPACES EXCLUSIVELY, then
set the itemDel to space
and
put item 1 & tab & item 2 to -1 of LNN & cr after newList
You can set the itemDel and the lineDel, but not the wordDelimiter
--- syntax errors -- specific replace
replace space 2 in line k with tab -- makes no sense to LC
replace space 2 in line k of varLines with tab -- no sense either
--------- copy working code ----
on mouseup
put fld 1 into tempp
repeat for each line LNN in tempp
put word 1 to -1 of LNN into cleanLine --trim
put word 1 of cleanLine & tab & word 2 to -1 of cleanLine & cr
after newList
end repeat
;put newList
--filter newList without tab --to purge tab-only lines
-- or the following to keep tab-only lines as empty lines
put 0 into prevNum
repeat until the number of chars in newList is prevNum
put the number of chars in newList into prevNum
replace (cr & tab & cr) with ( cr & cr) in newList
end repeat
;put newList
-- and purge empty if desired
filter newList without empty
;put newList
end mouseup
------- end copy code -------
Hope this helps.
Jim Ault
Las Vegas
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