On Wed, Apr 25, 2012 at 08:52:52AM -0400, Paul Clark wrote:
> Hi All,
>
> I have a small project that is stumping me aside from using a straight brute
> force.
>
> I am processing output from an accounting program that is producing some
> sort of printer control for some 3rd party print processing. I have
> several partial lines that have commands to "over write" the line to create
> bold type. I need combine the lines:
>
> 1 Balance Due:
> 0 Balance Due: $567.23
> 0 $567.23 Before Due Date:
> 0 Before Due Date: 06/15/12
> 0 06/15/12
>
> So the output line should be:
>
> Balance Due: $567.23 Before Due Date: 06/15/12
>
>
> The problem is the lines can be variable so I cannot just use substr to copy
> parts of lines. The brute force was I was going to use is to just create
> an output array for the line and loop through each line position by position
> and if the character was not a space, set that position in the output array
> to the character in the input line.
> Any suggestions for a more elegant solution?
Depending on how loosely you define elegent....
#!/usr/bin/perl
use strict;
use warnings;
my %lines;
my $start = <DATA>;
my $line_count;
my $max_len = 0;
while(<DATA>) {
$max_len = length $_ > $max_len ? length $_ : $max_len;
chomp;
s/\s+$//;
$line_count++;
m/(\s[^\s])/;
my $initial_char = $1;
my $offset = index $_, $initial_char, 1; # 1 to skip the 1/0 at start of
line
my $length = length $_;
$length -= $offset;
my $string = substr $_, $offset, $length;
$lines{$line_count } = [ $offset, $length, $string];
}
my $output = " " x $max_len;
foreach my $i ( sort keys %lines ) {
my ($offset, $length, $str) = @{$lines{$i}};
# print "$offset, $length, $str\n";
if( $str) {
substr $output, $offset, $length, $str;
}
# print $output,$/;
}
print $output,$/;
__DATA__
1 Balance Due:
0 Balance Due: $567.23
0 $567.23 Before Due Date:
0 Before Due Date: 06/15/12
0 06/15/12
Clean up and elegence left as an exercise for the reader
--
Michael Rasmussen, Portland Oregon
Other Adventures: http://www.jamhome.us/ or http://westy.saunter.us/
Fortune Cookie Fortune du courrier:
Mirrors should reflect a little before throwing back images.
~ Jean Cocteau
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