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|
#!/usr/bin/perl
use strict;
use warnings;
die "Need two arguments" unless @ARGV >= 2;
my %todel;
foreach (split(",", $ARGV[1])) {
$todel{$_}=1;
}
splice (@ARGV, 1);
my @input;
while (<>) {
if (/^\[/ || @input == 0) {
push @input, $_;
} else {
$input[-1].=$_;
}
}
my $index = 0;
my $blockno = 0;
my @output = ();
my $deleted_lines = 0;
my $ADDMODE = 1;
sub infsum {
my $result = 0;
foreach (@_) {
return "*" if /^\*$/;
print STDERR "Unexpected value: '$_'\n" unless /^\d+$/;
$result += $_ if /^\d+$/;
}
return $result;
}
foreach (@input) {
if (/^\[block\]/m) {
my $name;
$name=$1 if (/^name=(.*?)$/m);
if ($ADDMODE && $deleted_lines > 0) {
# if deleted_lines > 0 => block was deleted but no [dist] followed
# if there is [dist] in output: add deleted_lines to <min> and set <max> to inf
# else push new output deleted_lines <max>
if (@output && $output[-1] =~ /^\[dist\]/m) {
$output[-1] =~ s/^(\d+)(\s+)(\d+|\*)/($1 + $deleted_lines)."$2*"/me;
} else {
push @output, "[dist]\n# distance to previous block\n# <min> <max>\n$deleted_lines\t*\n\n";
}
}
if ((defined $name && exists $todel{$name}) || exists $todel{$blockno}) {
my $blsize = 0;
while (/^(\d+)\s/mg && $blsize == $1) {
$blsize++;
}
### DEBUG part
if ($blsize == 0) {
die "This file is corrupted (trying to delete empty block). Gave up";
}
$deleted_lines = $blsize;
### end of DEBUG part
unless ($ADDMODE) {
# ADDMODE == false
while (@output && $output[-1] =~ /^\[dist\]/m) {
pop @output;
}
}
} else {
push @output, $_;
$deleted_lines = 0;
}
$blockno++;
} elsif (/^\[dist\]/) {
if ($deleted_lines>0) {
if ($ADDMODE) {
# if deleted_lines > 0 && there is [dist] in output (must be
# from before deleted block): add output and deleted_lines to input, replace output by input
# if deleted_lines > 0 && no [dist] in output:
# push current on output add deleted_lines to min and set max to inf
my ($outmin, $outmax) =
(@output && $output[-1] =~ /^\[dist\]/m) ?
((pop @output) =~ /^(\d+)\s+(\d+|\*)/m) : (0, "*");
### DEBUG part
die "Undefined" unless defined $_;
die "Bad syntax: $_" unless defined $outmax;
s/^(.*\n)(\d+)(\s+)(\d+|\*)//s;
my ($prefix, $inmin, $tab, $inmax) = ($1, $2, $3, $4);
### DEBUG part
die "Bad syntax: $_" unless (defined $inmax);
push @output, $prefix.($outmin + $deleted_lines + $inmin).$tab.&infsum($outmax, $inmax, $deleted_lines).$_;
$deleted_lines = 0;
}
# if ADDMODE==false: skip [dist] in output
} else {
push @output, $_;
}
} else {
push @output, $_;
}
}
# this is needed if last block was deleted
if ($ADDMODE && $deleted_lines > 0) {
# if deleted_lines > 0 => block was deleted but no [dist] followed
# if there is [dist] in output: add deleted_lines to <min> and set <max> to inf
# else push new output deleted_lines <max>
if (@output && $output[-1] =~ /^\[dist\]/m) {
$output[-1] =~ s/^(\d+)(\s+)(\d+|\*)/($1 + $deleted_lines)."$2*"/me;
} else {
push @output, "[dist]\n# distance to previous block\n# <min> <max>\n$deleted_lines\t*\n\n";
}
}
print foreach @output;
|
