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Re^6: Substitute in a subparagraph

by blazar (Canon)
on Oct 19, 2008 at 10:19 UTC ( #718039=note: print w/replies, xml ) Need Help??

in reply to Re^5: Substitute in a subparagraph
in thread Substitute in a subparagraph

I personally believe that since the text you're operating on seems highly structured, and more precisely a proper language, then a fully reliable solution would comprise to write a parser. Perhaps one exists already. However, if you're fairly sure that the your data is regular enough then you may want to slurp it all at once and process it with somewhat naive regexen. The following program follows such an approach does work as expected on your sample, but be warned that it may fail on the full data.

#!/usr/bin/perl use strict; use warnings; use 5.010; sub doit { my ($head, $body) = @_; $body =~ s/QUALIFIED// unless $head ~~ /^\w+?clk\[\d\]/; $head . $body; } local $_ = do { local $/; scalar <DATA> }; s/ ^ \b ( [ \w \s \[ \] ]+ \s+ \( ) $ ( .*? ^\)$ ) /doit $1, $2/gemsx; print; __END__ qclk[6] INPUT ( ! "asdk fd sasd" VALID ( late_lead 3 ar qclk slope 20 late_lead 3 af qclk slope 04 early_dn 8 ar qclk slope 6 early_up 6 af qclk slope 6 ) cext %0.00394757 cmax %0.005504 QUALIFIED ) clkout_qclk_61[3] OUTPUT ( ) clkout_qclk_61[2] OUTPUT ( REQUIRED ( earlyp 0.5 br qclk clm(2) latel_up 5 bf qclk clk(2) ) REQUIRED ( early_lead_dn 0.004 bf qclk clkdom(2) late_trail_dn 0.005 br qclk clkdom(2) ) cext %0.0647336 max_ceff_up %0.187 QUALIFIED )
If you can't understand the incipit, then please check the IPB Campaign.

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