#!./perl -w
BEGIN {
- unshift @INC, '../lib' if -d '../lib' ;
+ @INC = '../lib';
require Config; import Config;
if ($Config{'extensions'} !~ /\bDB_File\b/) {
print "1..0 # Skip: DB_File was not built\n";
use DB_File;
use Fcntl;
use strict ;
+use warnings;
use vars qw($dbh $Dfile $bad_ones $FA) ;
# full tied array support started in Perl 5.004_57
return $result ;
}
+{
+ package Redirect ;
+ use Symbol ;
+
+ sub new
+ {
+ my $class = shift ;
+ my $filename = shift ;
+ my $fh = gensym ;
+ open ($fh, ">$filename") || die "Cannot open $filename: $!" ;
+ my $real_stdout = select($fh) ;
+ return bless [$fh, $real_stdout ] ;
+
+ }
+ sub DESTROY
+ {
+ my $self = shift ;
+ close $self->[0] ;
+ select($self->[1]) ;
+ }
+}
+
+sub docat
+{
+ my $file = shift;
+ local $/ = undef;
+ open(CAT,$file) || die "Cannot open $file:$!";
+ my $result = <CAT>;
+ close(CAT);
+ return $result;
+}
+
+sub docat_del
+{
+ my $file = shift;
+ local $/ = undef;
+ open(CAT,$file) || die "Cannot open $file: $!";
+ my $result = <CAT>;
+ close(CAT);
+ unlink $file ;
+ return $result;
+}
+
sub bad_one
{
print STDERR <<EOM unless $bad_ones++ ;
EOM
}
-print "1..124\n";
+print "1..128\n";
my $Dfile = "recno.tmp";
unlink $Dfile ;
# UNSHIFT
# empty list
-($FA ? unshift @h : $X->unshift) ;
+($FA ? unshift @h,() : $X->unshift) ;
ok(31, ($FA ? @h == @data : $X->length == @data ));
my @new_data = qw(add this to the start of the array) ;
unlink $Dfile;
-sub docat
-{
- my $file = shift;
- local $/ = undef;
- open(CAT,$file) || die "Cannot open $file:$!";
- my $result = <CAT>;
- close(CAT);
- return $result;
-}
-
{
# Check bval defaults to \n
package Another ;
+ use warnings ;
use strict ;
open(FILE, ">SubDB.pm") or die "Cannot open SubDB.pm: $!\n" ;
package SubDB ;
+ use warnings ;
use strict ;
use vars qw( @ISA @EXPORT) ;
{
# DBM Filter tests
+ use warnings ;
use strict ;
my (@h, $db) ;
my ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
{
# DBM Filter with a closure
+ use warnings ;
use strict ;
my (@h, $db) ;
{
# DBM Filter recursion detection
+ use warnings ;
use strict ;
my (@h, $db) ;
unlink $Dfile;
unlink $Dfile;
}
+
+{
+ # Examples from the POD
+
+ my $file = "xyzt" ;
+ {
+ my $redirect = new Redirect $file ;
+
+ use warnings FATAL => qw(all);
+ use strict ;
+ use DB_File ;
+
+ my $filename = "text" ;
+ unlink $filename ;
+
+ my @h ;
+ my $x = tie @h, "DB_File", $filename, O_RDWR|O_CREAT, 0640, $DB_RECNO
+ or die "Cannot open file 'text': $!\n" ;
+
+ # Add a few key/value pairs to the file
+ $h[0] = "orange" ;
+ $h[1] = "blue" ;
+ $h[2] = "yellow" ;
+
+ $FA ? push @h, "green", "black"
+ : $x->push("green", "black") ;
+
+ my $elements = $FA ? scalar @h : $x->length ;
+ print "The array contains $elements entries\n" ;
+
+ my $last = $FA ? pop @h : $x->pop ;
+ print "popped $last\n" ;
+
+ $FA ? unshift @h, "white"
+ : $x->unshift("white") ;
+ my $first = $FA ? shift @h : $x->shift ;
+ print "shifted $first\n" ;
+
+ # Check for existence of a key
+ print "Element 1 Exists with value $h[1]\n" if $h[1] ;
+
+ # use a negative index
+ print "The last element is $h[-1]\n" ;
+ print "The 2nd last element is $h[-2]\n" ;
+
+ undef $x ;
+ untie @h ;
+
+ unlink $filename ;
+ }
+
+ ok(125, docat_del($file) eq <<'EOM') ;
+The array contains 5 entries
+popped black
+shifted white
+Element 1 Exists with value blue
+The last element is green
+The 2nd last element is yellow
+EOM
+
+ my $save_output = "xyzt" ;
+ {
+ my $redirect = new Redirect $save_output ;
+
+ use warnings FATAL => qw(all);
+ use strict ;
+ use vars qw(@h $H $file $i) ;
+ use DB_File ;
+ use Fcntl ;
+
+ $file = "text" ;
+
+ unlink $file ;
+
+ $H = tie @h, "DB_File", $file, O_RDWR|O_CREAT, 0640, $DB_RECNO
+ or die "Cannot open file $file: $!\n" ;
+
+ # first create a text file to play with
+ $h[0] = "zero" ;
+ $h[1] = "one" ;
+ $h[2] = "two" ;
+ $h[3] = "three" ;
+ $h[4] = "four" ;
+
+
+ # Print the records in order.
+ #
+ # The length method is needed here because evaluating a tied
+ # array in a scalar context does not return the number of
+ # elements in the array.
+
+ print "\nORIGINAL\n" ;
+ foreach $i (0 .. $H->length - 1) {
+ print "$i: $h[$i]\n" ;
+ }
+
+ # use the push & pop methods
+ $a = $H->pop ;
+ $H->push("last") ;
+ print "\nThe last record was [$a]\n" ;
+
+ # and the shift & unshift methods
+ $a = $H->shift ;
+ $H->unshift("first") ;
+ print "The first record was [$a]\n" ;
+
+ # Use the API to add a new record after record 2.
+ $i = 2 ;
+ $H->put($i, "Newbie", R_IAFTER) ;
+
+ # and a new record before record 1.
+ $i = 1 ;
+ $H->put($i, "New One", R_IBEFORE) ;
+
+ # delete record 3
+ $H->del(3) ;
+
+ # now print the records in reverse order
+ print "\nREVERSE\n" ;
+ for ($i = $H->length - 1 ; $i >= 0 ; -- $i)
+ { print "$i: $h[$i]\n" }
+
+ # same again, but use the API functions instead
+ print "\nREVERSE again\n" ;
+ my ($s, $k, $v) = (0, 0, 0) ;
+ for ($s = $H->seq($k, $v, R_LAST) ;
+ $s == 0 ;
+ $s = $H->seq($k, $v, R_PREV))
+ { print "$k: $v\n" }
+
+ undef $H ;
+ untie @h ;
+
+ unlink $file ;
+ }
+
+ ok(126, docat_del($save_output) eq <<'EOM') ;
+
+ORIGINAL
+0: zero
+1: one
+2: two
+3: three
+4: four
+
+The last record was [four]
+The first record was [zero]
+
+REVERSE
+5: last
+4: three
+3: Newbie
+2: one
+1: New One
+0: first
+
+REVERSE again
+5: last
+4: three
+3: Newbie
+2: one
+1: New One
+0: first
+EOM
+
+}
+
+{
+ # Bug ID 20001013.009
+ #
+ # test that $hash{KEY} = undef doesn't produce the warning
+ # Use of uninitialized value in null operation
+ use warnings ;
+ use strict ;
+ use DB_File ;
+
+ unlink $Dfile;
+ my @h ;
+ my $a = "";
+ local $SIG{__WARN__} = sub {$a = $_[0]} ;
+
+ tie @h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0664, $DB_RECNO
+ or die "Can't open file: $!\n" ;
+ $h[0] = undef;
+ ok(127, $a eq "") ;
+ untie @h ;
+ unlink $Dfile;
+}
+
+{
+ # test that %hash = () doesn't produce the warning
+ # Argument "" isn't numeric in entersub
+ use warnings ;
+ use strict ;
+ use DB_File ;
+ my $a = "";
+ local $SIG{__WARN__} = sub {$a = $_[0]} ;
+
+ unlink $Dfile;
+ my @h ;
+
+ tie @h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0664, $DB_RECNO
+ or die "Can't open file: $!\n" ;
+ @h = (); ;
+ ok(128, $a eq "") ;
+ untie @h ;
+ unlink $Dfile;
+}
+
exit ;
projects / p5sagit/p5-mst-13.2.git / blobdiff