New string based on parts of old string

How do I get new str from this old string? All the strings are in this format. Is there a way to extract based on the position from '(' and after '|'?

OldStr1 = 'Extract clusters: PR (2 files) | DG_MD_CG_22'
OldStr2 = 'Extract clusters: OR (2 files) | AG_MD_HH_CG_HH_22'

NewStr1 = 'DG_MD_CG_22_PR'
NewStr2 = 'AG_MD_HH_CG_HH_22_OR'

Answer 1

[Voss]

OldStr1 = 'Extract clusters: PR (2 files) | DG_MD_CG_22';
OldStr2 = 'Extract clusters: OR (2 files) | AG_MD_HH_CG_HH_22';

NewStr1 = construct_new_str(OldStr1)

NewStr1 = 'DG_MD_CG_22_PR'

NewStr2 = construct_new_str(OldStr2)

NewStr2 = 'AG_MD_HH_CG_HH_22_OR'

function new_str = construct_new_str(str)
    idx0 = find(str == ':',1,'last');
    idx1 = find(str == '(',1,'last');
    idx2 = find(str == '|',1,'last');
    new_str = [str(idx2+2:end) '_' str(idx0+2:idx1-2)];
end

[DavidL88]

Thanks

Answer 2

[Steven Lord]

I would use the extract* functions listed in the Join and Split section of the Characters and Strings category page in the documentation.

s = 'hocus pocus'

s = 'hocus pocus'

h = extractBefore(s, ' ')

h = 'hocus'

p = extractAfter(s, ' ')

p = 'pocus'

[DavidL88]

Thanks