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#!/usr/bin/perl
my $file = "tf$$.txt";
print "1..38\n";
my $N = 1;
use Tie::File;
print "ok $N\n"; $N++;
my $o = tie @a, 'Tie::File', $file, recsep => 'blah';
print $o ? "ok $N\n" : "not ok $N\n";
$N++;
# 3-4 create
$a[0] = 'rec0';
check_contents("rec0");
# 5-8 append
$a[1] = 'rec1';
check_contents("rec0", "rec1");
$a[2] = 'rec2';
check_contents("rec0", "rec1", "rec2");
# 9-14 same-length alterations
$a[0] = 'new0';
check_contents("new0", "rec1", "rec2");
$a[1] = 'new1';
check_contents("new0", "new1", "rec2");
$a[2] = 'new2';
check_contents("new0", "new1", "new2");
# 15-24 lengthening alterations
$a[0] = 'long0';
check_contents("long0", "new1", "new2");
$a[1] = 'long1';
check_contents("long0", "long1", "new2");
$a[2] = 'long2';
check_contents("long0", "long1", "long2");
$a[1] = 'longer1';
check_contents("long0", "longer1", "long2");
$a[0] = 'longer0';
check_contents("longer0", "longer1", "long2");
# 25-34 shortening alterations, including truncation
$a[0] = 'short0';
check_contents("short0", "longer1", "long2");
$a[1] = 'short1';
check_contents("short0", "short1", "long2");
$a[2] = 'short2';
check_contents("short0", "short1", "short2");
$a[1] = 'sh1';
check_contents("short0", "sh1", "short2");
$a[0] = 'sh0';
check_contents("sh0", "sh1", "short2");
# file with holes
$a[4] = 'rec4';
check_contents("sh0", "sh1", "short2", "", "rec4");
$a[3] = 'rec3';
check_contents("sh0", "sh1", "short2", "rec3", "rec4");
# try inserting a record into the middle of an empty file
use POSIX 'SEEK_SET';
sub check_contents {
my @c = @_;
my $x = join 'blah', @c, '';
local *FH = $o->{fh};
seek FH, 0, SEEK_SET;
my $a;
{ local $/; $a = <FH> }
$a = "" unless defined $a;
if ($a eq $x) {
print "ok $N\n";
} else {
my $msg = "# expected <$x>, got <$a>";
ctrlfix($msg);
print "not ok $N $msg\n";
}
$N++;
# now check FETCH:
my $good = 1;
for (0.. $#c) {
unless ($a[$_] eq "$c[$_]blah") {
$msg = "expected $c[$_]blah, got $a[$_]";
ctrlfix($msg);
$good = 0;
}
}
print $good ? "ok $N\n" : "not ok $N # fetch @c\n";
$N++;
}
sub ctrlfix {
for (@_) {
s/\n/\\n/g;
s/\r/\\r/g;
}
}
END {
undef $o;
untie @a;
1 while unlink $file;
}
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