Keep the "elvis:" take and change the rest of the line. This
description is used at Surfraw installation time to generate a list
of Surfraw clients
Immediately after we see:
. surfraw || exit 1
Which pulls in the Surfraw functions. Keep it.
Next we (optionally) define w3_config_hook(). It is called
by w3_config and is used to define default configuration
variables. It is called after the global configuration file
is interpreted, but before ~/.surfraw.
You will notice the use of:
def -- define configuration variable unless already defined (i.e by the environment) defyn -- define boolean configuration variable unless already defined
Which are pre-defined surfraw functions, but you can
of course use your own arbitrary broken shell code instead.
Any non-trivial program will then define w3_usage_hook().
$w3_argv0 is set to contain $0, otherwise usage is self
explanatory. You must call w3_global_usage at the end
of this function and follow the surfraw usage style
least you be marked a quiche eater.
Next define w3_parse_option_hook(). This is called at w3_config()
time, and takes two arguments. The first is the current
option being examined, the second is only present if the
option was of the form -foo=bar. It's the bar.
w3_parse_option_hook() is called before Surfraw global options
are parsed and so you can selectively over-ride them.
Return value: 0 if the option was recognised, 1 otherwise.
After this, w3_config() and w3_parse_args "$@" are called.
w3_config() scans the configuration files and calls
w3_config_hook(). w3_parse_args "$@" processes options,
calls w3_parse_option_hook() as needed and builds
$w3_args -- the list non-option arguments.
This ends the regular initialisation code.
7.5) Note that surfraw now supports quoting arguments, eg with:
sr google foo "bar baz" bam
it adds the quotes back.
Not all sites support arguments in double quotes. If you want to
disable it for your elvis, add SURFRAW_quote_ifs=0
in between the calls to w3_config and w3_parse_args.
What happens next depends on the type of evil we are dealing
with. In the Peoples' Front Against Forum Stealing Dogs case, we have
previously performed a search on the http://www.pfafsd.org search
service, and noted (with the = key in lynx, links) the URL
returned. We then analyse this URL to work out which CGI variable is
being used to convey search the search string, number of results et
Q: What about those proslytizers of iniquity that worship idols like
A: Most sites will take GETs in the place of POSTs, even if they
preach method=POST in forms. For those that don't? Walking with
the devil should not be a an exercise in relaxed discourse. The
problem is getting the browser to automatically submit the data
using POST as a method. One partial solution is to have surfraw
generate a pre-filled method=POST form as a local file and have
the browser read it. Exploration of other ideas is encouraged.
w3_url_of_arg() is then used to escape the command line search
string argument into something that can be seen in a URL without
i.e escaped_args=w3_url_of_arg $w3_args
In our last exhilarating moments we then build the final URL and
pass it onto the currently selected browser with w3_browse_url,
proud in the knowledge that the Shell Users' Revolutionary Front
Against the WWW has brought the holy word of the command line to
yet another heathen land.