Here is my solution (it will "Dollize" an infinitely large number).
Okay, so it's not as elegant as Mark's. And it's klunky. But it
works. This requires two subroutines:
# ### DOLLIZE: Turn any number into a dollar format string
# sub dollize {
# undef(@tmp);
# undef($tmp);
# $i = -1;
# @tmp = split/\./,(decimize($_[0]));
# if ($tmp[0] =~ /-/) {
# $tmp[0] =~ s/-//g;
# $neg = 1;
# }
# else {
# $neg = 0;
# }
#
# if (length($tmp[0]) > 3) {
# foreach (0..length($tmp[0])-1) {
# $tmp = $tmp
# . substr($tmp[0],length($tmp[0])-1-$_,1);
# $i++;
# if ($i == 2 && $_ ne (length($tmp[0])-1)) {
# $i = -1;
# $tmp = $tmp . ",";
# }
# }
# $tmp = reverse($tmp);
# }
# else {
# $tmp = $tmp[0];
# }
#
# if ($neg == 1) {
# $tmp = "(\$" . $tmp . "." . $tmp[1] . ")";
# }
# else {
# $tmp = "\$" . $tmp . "." . $tmp[1];
# }
#
# return $tmp;
# }
#
# ### DECIMIZE: Make sure regular numbers have the proper number of
# ### decimals
# sub decimize {
# if ($_[0] =~ /\./) {
# @tmp=split/\./,$_[0];
# if (length($tmp[1]) == 2) {
# return $_[0];
# }
# elsif (length($tmp[1]) == 1) {
# return $_[0] . "0";
# }
# elsif (length($tmp[1]) == 0) {
# return $_[0] . "00";
# }
# elsif (length($tmp[1]) > 2) {
# return $tmp[0] . "." . substr($tmp[1],0,2);
# }
# else {
# # return int($_[0]*1000) / 1000; # For float
# # rounding
# return $_[0];
# }
# }
# elsif ($_[0] eq "") {
# return "0.00";
# }
# else {
# return $_[0] . ".00";
# }
# }
For MONEY types, this might also be helpful:
# ### NUMIZE: Change Currency strings into numbers
# sub numize {
# $tmp = $_[0];
# $tmp =~ s/[\$,]//g;
# if ($tmp =~ /\(/) {
# $tmp =~ s/[\(\)]//g;
# $tmp = "-" . $tmp;
# }
# # $tmp = int($tmp*1000) / 1000; # For float rounding
# return $tmp;
# }
> On Friday, September 10, 1999 8:36 AM, Mark Wright
> [SMTP:mwright(at)pro-ns(dot)net] wrote:
> >
> > -----Original Message-----
> > From: secret <secret(at)kearneydev(dot)com>
> > To: Herouth Maoz <herouth(at)oumail(dot)openu(dot)ac(dot)il>
> > Cc: pgsql-sql(at)postgreSQL(dot)org <pgsql-sql(at)postgreSQL(dot)org>
> > Date: Thursday, September 09, 1999 3:31 PM
> > Subject: Re: [SQL] Type Conversion: int4 -> Money
> >
> >
> > >Herouth Maoz wrote:
> > >
> >
> > ...
> >
> > > Perl... I ended up writing my own formatting function... It
> > > has
> > > one
> > that
> > >does ####.## however not one that'll do the nice 123,456.33 ...
> > >:)
> > > Do you
> > know
> > >if there are any public modules that do such things?
> >
> >
> > from the Perl Cookbook (a Perl-programmer must have!):
> > sub commify
> > {
> > my $text = reverse $_[0];
> > $text =~ s/(\d\d\d)(?=\d)(?!\d*\.)/$1,/g;
> > return scalar reverse $text;
> > }
> >
> > If you want a locale-using solution, and can use C, there's code
> > in
> > the
> > pgsql source that does this. Look at:
> >
> > /src/backend/utils/adt/cash.c cash_out()
> >
> >
> >
> >
> > ************