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/*
* Copyright (c) 2003-2007, John Wiegley. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of New Artisans LLC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "quotes.h"
namespace ledger {
optional<amount_t>
quotes_by_script::operator()(commodity_t& commodity,
const optional<moment_t>& date,
const optional<moment_t>& moment,
const optional<moment_t>& last)
{
LOGGER("quotes.download");
IF_DEBUG_() {
DEBUG_("commodity: " << commodity.symbol());
DEBUG_(" now: " << now);
if (date)
DEBUG_(" date: " << date);
if (moment)
DEBUG_(" moment: " << moment);
if (last)
DEBUG_(" last: " << last);
if (commodity.history())
DEBUG_("last_lookup: " << commodity.history()->last_lookup);
}
DEBUG_("pricing_leeway is " << pricing_leeway);
if ((commodity.history() &&
(now - commodity.history()->last_lookup) < pricing_leeway) ||
(last && (now - *last) < pricing_leeway) ||
(moment && date && *moment > *date &&
(*moment - *date) <= pricing_leeway))
return optional<amount_t>();
DEBUG_("downloading quote for symbol " << commodity.symbol());
char buf[256];
buf[0] = '\0';
bool success = true;
if (FILE * fp = popen((string("getquote \"") +
commodity.base_symbol() + "\"").c_str(), "r")) {
if (feof(fp) || ! fgets(buf, 255, fp))
success = false;
if (pclose(fp) != 0)
success = false;
} else {
success = false;
}
if (success && buf[0]) {
char * p = strchr(buf, '\n');
if (p) *p = '\0';
DEBUG_("downloaded quote: " << buf);
amount_t price;
price.parse(buf);
commodity.add_price(now, price);
commodity.history()->last_lookup = now;
cache_dirty = true;
assert(! price_db.empty());
#if defined(__GNUG__) && __GNUG__ < 3
ofstream database(price_db, ios::out | ios::app);
#else
ofstream database(price_db, std::ios_base::out | std::ios_base::app);
#endif
#if 0
// jww (2007-04-18): Need to convert to local time and print
// here, print with UTC timezone specifier
database << "P " << now.to_string("%Y/%m/%d %H:%M:%S")
<< " " << commodity.symbol << " " << price << endl;
#endif
return price;
} else {
throw_(download_error,
"Failed to download price for '" << commodity.symbol() <<
"' (command: \"getquote " << commodity.base_symbol() << "\")");
}
return optional<amount_t>();
}
} // namespace ledger
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