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package Msql::Statement;
use strict;
use vars qw($OPTIMIZE $VERSION $AUTOLOAD);
$VERSION = substr q$Revision: 1.15 $, 10;
# $Id: Statement.pm,v 1.15 1996/09/08 13:33:45 k Exp $
$OPTIMIZE = 0; # controls, which optimization we default to
sub numrows { my $x = shift; $x->{'NUMROWS'} or $x->fetchinternal( 'NUMROWS' ) }
sub numfields { shift->fetchinternal( 'NUMFIELDS' ) }
sub table { return wantarray ? @{shift->fetchinternal('TABLE' )}: shift->fetchinternal('TABLE' )}
sub name { return wantarray ? @{shift->fetchinternal('NAME' )}: shift->fetchinternal('NAME' )}
sub type { return wantarray ? @{shift->fetchinternal('TYPE' )}: shift->fetchinternal('TYPE' )}
sub isnotnull { return wantarray ? @{shift->fetchinternal('ISNOTNULL')}: shift->fetchinternal('ISNOTNULL')}
sub isprikey { return wantarray ? @{shift->fetchinternal('ISPRIKEY' )}: shift->fetchinternal('ISPRIKEY' )}
sub length { return wantarray ? @{shift->fetchinternal('LENGTH' )}: shift->fetchinternal('LENGTH' )}
sub listindices {
my($sth) = shift;
my(@result,$i);
return () unless &Msql::IDX_TYPE;
foreach $i (0..$sth->numfields-1) {
next unless $sth->type->[$i] == &Msql::IDX_TYPE;
push @result, $sth->name->[$i];
}
@result;
}
sub AUTOLOAD {
my $meth = $AUTOLOAD;
$meth =~ s/^.*:://;
$meth =~ s/_//g;
$meth = lc($meth);
# Allow them to say fetch_row or FetchRow
no strict;
if (defined &$meth) {
*$AUTOLOAD = \&{$meth};
return &$AUTOLOAD(@_);
}
Carp::croak "$AUTOLOAD not defined and not autoloadable";
}
sub unctrl {
my($x) = @_;
$x =~ s/\\/\\\\/g;
$x =~ s/([\001-\037\177])/sprintf("\\%03o",unpack("C",$1))/eg;
$x;
}
sub optimize {
my($self,$arg) = @_;
if (defined $arg) {
return $self->{'OPTIMIZE'} = $arg;
} else {
return $self->{'OPTIMIZE'} ||= $OPTIMIZE;
}
}
sub as_string {
my($sth) = @_;
my($plusline,$titline,$sprintf,$result,$s) = ('+','|','|');
if ($sth->optimize) {
my(@sprintf,$l);
for (0..$sth->numfields-1) {
$sprintf[$_] = length($sth->name->[$_]);
}
$sth->dataseek(0);
my(@row);
while (@row = $sth->fetchrow) { #map {defined $_ ? unctrl($_) : "NULL"}!
foreach (0..$#row) {
my($s) = defined $row[$_] ? unctrl($row[$_]) : "NULL";
# New in 2.0: a string is longer than it should be
if ($sth->type->[$_] == &Msql::TEXT_TYPE && length($s) > $sth->length->[$_] + 5) {
my $l = length($row[$_]);
$sprintf[$_] = $sth->length->[$_] + 5 + length($l); # for "...()"
} else {
$sprintf[$_] = length($s) if length($s) > $sprintf[$_];
}
}
}
for (0..$sth->numfields-1) {
$l = $sprintf[$_];
$l *= -1 if
$sth->type->[$_] & &Msql::CHAR_TYPE | &Msql::TEXT_TYPE;
$plusline .= sprintf "%$ {l}s+", "-" x $sprintf[$_];
$titline .= sprintf "%$ {l}s|", $sth->name->[$_];
$sprintf .= "%$ {l}s|";
}
} else {
for (0..$sth->numfields-1) {
my $l;
if ($sth->type->[$_] == Msql::INT_TYPE()){
$l = 10;
} elsif ($sth->type->[$_] == Msql::REAL_TYPE()){
$l = 16;
} else {
$l = $sth->length->[$_];
}
$l < length($sth->name->[$_]) and $l = length($sth->name->[$_]);
$plusline .= "-" x $l . "+";
$titline .= $sth->name->[$_] . " " x ($l - length($sth->name->[$_])) . "|";
$sprintf .= (($sth->type->[$_] & &Msql::CHAR_TYPE | &Msql::TEXT_TYPE)
? "%-$ {l}s|" : "%$ {l}s|");
}
}
$sprintf .= "\n";
#WHY?: print $@ if $@;
$result = "$plusline\n$titline\n$plusline\n";
$sth->dataseek(0);
my(@row);
while (@row = $sth->fetchrow) { #was: map {defined $_ ? unctrl($_) : "NULL"}
my(@prow);
foreach (0..$#row) {
$prow[$_] = defined $row[$_] ? unctrl($row[$_]) : "NULL";
# New in 2.0: a string is longer than it should be
if (
$sth->optimize &&
$sth->type->[$_] == &Msql::TEXT_TYPE &&
length($prow[$_]) > $sth->length->[$_] + 5
) {
my $l = length($row[$_]);
substr($prow[$_],$sth->length->[$_])="...($l)";
}
}
$result .= sprintf $sprintf, @prow;
}
$result .= "$plusline\n";
$s = $sth->numrows == 1 ? "" : "s";
$result .= $sth->numrows . " row$s processed\n\n";
return $result;
}
1;
__END__
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