e2fsprogs/wordwrap.pl

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Perl
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#!/usr/bin/perl
#
# wordwrap.pl --- does word wrap
#
while (<>) {
if (/^#/) { # don't word wrap comments
print;
next;
}
next if (/^$/); # skip blank lines
$linelen = 0;
@words = split;
while (defined($word = shift @words)) {
$word =~ s#\$\(srcdir\)/\.\./version.h#\$\(top_srcdir\)/version.h#;
$word =~ s#\$\(srcdir\)/.\.\/\.\./version.h#\$\(top_srcdir\)/version.h#;
$word =~ s#\$\(srcdir\)/.\.\/et/com_err.h#\$\(top_srcdir\)/lib/et/com_err.h#;
if ($linelen > 0) {
printf(" ");
}
$len = length($word) + 1;
$linelen += $len;
if ($linelen > 78) {
printf("\\\n ");
$linelen = 1+$len;
}
printf("%s", $word);
}
printf("\n");
}