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Re^3: Sort text by Chapter names

by tybalt89 (Parson)
on May 28, 2018 at 22:23 UTC ( #1215339=note: print w/replies, xml ) Need Help??

in reply to Re^2: Sort text by Chapter names
in thread Sort text by Chapter names

For the fun of it ( and also to show you can seek on DATA )

#!/usr/bin/perl # use strict; use warnings; my %chapters; my $previous = undef; my $buffer; my $max = 4096; while(<DATA>) { if( /^Chapter/ ) { $chapters{$_} = $previous = [ tell(DATA) - length, length ]; } elsif( defined $previous ) { $previous->[1] += length; } } use Data::Dump 'pp'; print pp \%chapters; print "\n\n"; for ( sort keys %chapters ) { my ($start, $length) = $chapters{$_}->@*; seek DATA, $start, 0; while( $length > $max ) { read DATA, $buffer, $max; print $buffer; $length -= $max; } read DATA, $buffer, $length; print $buffer; } __DATA__ Chapter One There were lots of monkeys here and they ate all the bananas... lots more text up to hundreds of words. Chapter Nine This chapter has probably 1000 words. Chapter Two Here is the text in the second chapter... Chapter Five Here is the text in the fifth chapter... every chapter is of differing length, some long some short.

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