Even without wrapper functions, retrieving data
directly from Amazon with XML/HTTP is straightforward. You just need
the ability to grab a file from the Web and parse the results.
What You Need
This hack requires two common Perl modules: one to handle the HTTP
request and another to parse the XML. Once the Amazon request URL is
built, LWP::Simple handles sending the request and receiving the XML
with a get( ) function. You can find out more
about LWP::Simple at CPAN (http://search.cpan.org/dist/libwww-perl/lib/LWP/Simple.pm).
is a lightweight XML parser. It provides a quick, simple interface
for working with XML.
Many ISPs have both of these modules installed already. If not, you
can install them with CPAN:
perl -MCPAN -e shell
cpan> install XML::Simple
If you have a Win32 system, you can install them from the command
line with the package manager like this:
ppm install XML::Simple
Running the Hack
From the command line, call the script like so:
perl amazon_http.pl hacks
Be sure to enclose phrases or multiple keywords in quotes, like so:
perl amazon.http.pl "google hacks"