NAME

       gnc-fq-helper  -  allows gnucash to communicate with Finance::Quote
                         over pipes from guile. The requests and responses
                         are scheme forms.

SYNOPSIS

       gnc-fq-helper

DESCRIPTION

       Input: (on standard input - one entry per line and one line per entry, and double quotes must only be
       delimiters, not string content -- remember, we don't have a real scheme parser on the perl side :>).

       (<method-name> symbol symbol symbol ...)

       where <method-name> indicates the desired Finance::Quote method.  The currently recognized subset is
       yahoo, yahoo_europe, fidelity_direct, troweprice_direct, vanguard, asx, tiaacref, and currency.

       For currency quotes, the symbols alternate between the 'from' and 'to' currencies.

       For example:

       (yahoo "IBM" "LNUX") (fidelity_direct "FBIOX" "FSELX") (currency "USD" "AUD")

       Output (on standard output, one output form per input line):

       Schemified version of gnc-fq's output, basically an alist of alists, as in the example below.  Right now,
       only the fields that this script knows about (and knows how to convert to scheme) are returned, so the
       conversion function will have to be updated whenever Finance::Quote changes.  Currently you'll get
       symbol, gnc:time-no-zone, and currency, and either last, nav, or price.  Fields with gnc: prefixes are
       non-Finance::Quote fields.  gnc:time-no-zone is returned as a string of the form "YYYY-MM-DD HH:MM:SS",
       basically the unmolested (and underspecified) output of the quote source.  It's up to you to know what
       it's proper timezone really is.  i.e. if you know the time was in America/Chicago, you'll need to convert
       it to that.

       For example:

        $ echo '(yahoo "CSCO" "JDSU" "^IXIC")' | ./gnc-fq-helper
       (("CSCO" (symbol . "CSCO")
                (gnc:time-no-zone . "2001-03-13 19:27:00")
                (last . 20.375)
                (currency . "USD"))
        ("JDSU" (symbol . "JDSU")
                (gnc:time-no-zone . "2001-03-13 19:27:00")
                (last . 23.5625)
                (currency . "USD"))
       ("^IXIC" (symbol . ^IXIC)
                (gnc:time-no-zone . 2002-12-04 17:16:00)
                (last . 1430.35)
                (currency . failed-conversion)))

       On error, the overall result may be #f, or on individual errors, the list sub-item for a given symbol may
       be #f, like this:

        $ echo '(yahoo "CSCO" "JDSU")' | ./gnc-fq-helper
       (#f
        ("JDSU" (symbol . "JDSU")
                (gnc:time-no-zone . "2001-03-13 19:27:00")
                (last . 23.5625)
                (currency . "USD")))

       further, errors may be stored with each quote as indicated in Finance::Quote, and whenever the conversion
       to scheme data fails, the field will have the value 'failed-conversion, and accordingly this symbol will
       never be a legitimate conversion.

       Exit status

       0 - success non-zero - failure