Replace value according to previous line

geoslake

Hi guys

Im editing sfz (a music samples standard), and would need to edit that kind of thing :

*<region> sample=Samples\Blister Pack5\Baghhopen.wav
lokey=0
hikey=0
pitch_keycenter=60

<region> sample=Samples\Blister Pack5\Bagsnes1.wav
lokey=1
hikey=1
pitch_keycenter=60

<region> sample=Samples\Blister Pack5\Bagsnes2.wav
lokey=2
hikey=2
pitch_keycenter=60*

etc etc (hundreds of values)
What i need to do is knda simple i guess, i need the xx value for “pitch_keycenter=” to be set according to what previous line say (hikey=yy)
In this case i would need to respectively set the “pitch_center” values, to 0,1 and 2.
Is there a way to achieve this in np++ ?

Thanks a million

CHeers

guy038

Hello Emmanuel,

Well, it’s easy enough to achieve that S/R !

Go back to the very beginning of your file
Open the Replace dialog and choose the Regular Expression search mode
In the SEARCH zone, type ((\d+)\Rpitch_keycenter=)\d+
In the REPLACE zone type \1\2
Click on the Replace All button

Notes :

\d+ represents any number (one or more consecutive digits )
\R is any End of Line ( \r\n for a Windows file, \n for an Unix file or \r for an old Mac file
The regex (\d+)\Rpitch_keycenter= stands for the group 1, which is re-written, first, (\1), in replacement
The first regex \d+ is the group 2 ( the number at the end of the hikey line, before the EOL and pitch_keycenter ), which is re-written, last, (\2), in replacement

You can either use that other regex syntax :

SEARCH = (\d+)\Rpitch_keycenter=\K\d+

REPLACE = \1

Notes :

The regex engine tries to match the regex (\d+)\Rpitch_keycenter=, and \d+ is the group 1 ( the number at the end of the hikey line
Then, due to the \K form, the regex engine forget the previous match and tries, now, to match the remaining. That is to say, the simple regex \d+ ( the number, at end of the pitch_keycenter line )
This number is, finally, replaced by the value of group 1
DON’T use the step-by-step Replace button, with that second syntax

Hope these regexes will be useful to you !

Best Regards

guy038

geoslake

Wow, thank you very very much, guy038, you not only almost saved my life :), but you took the time to explain things extensively to me, thanks again !

Cheers