117 lines
3.8 KiB
C++
117 lines
3.8 KiB
C++
/*
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* Copyright (c) 2003-2007, John Wiegley. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* - Neither the name of New Artisans LLC nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "quotes.h"
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namespace ledger {
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optional<amount_t>
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quotes_by_script::operator()(commodity_t& commodity,
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const optional<moment_t>& date,
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const optional<moment_t>& moment,
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const optional<moment_t>& last)
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{
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LOGGER("quotes.download");
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IF_DEBUG_() {
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DEBUG_("commodity: " << commodity.symbol());
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DEBUG_(" now: " << now);
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if (date)
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DEBUG_(" date: " << date);
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if (moment)
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DEBUG_(" moment: " << moment);
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if (last)
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DEBUG_(" last: " << last);
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if (commodity.history())
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DEBUG_("last_lookup: " << commodity.history()->last_lookup);
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}
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DEBUG_("pricing_leeway is " << pricing_leeway);
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if ((commodity.history() &&
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(now - commodity.history()->last_lookup) < pricing_leeway) ||
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(last && (now - *last) < pricing_leeway) ||
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(moment && date && *moment > *date &&
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(*moment - *date) <= pricing_leeway))
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return none;
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DEBUG_("downloading quote for symbol " << commodity.symbol());
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char buf[256];
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buf[0] = '\0';
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bool success = true;
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if (FILE * fp = popen((string("getquote \"") +
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commodity.base_symbol() + "\"").c_str(), "r")) {
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if (feof(fp) || ! fgets(buf, 255, fp))
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success = false;
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if (pclose(fp) != 0)
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success = false;
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} else {
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success = false;
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}
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if (success && buf[0]) {
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char * p = strchr(buf, '\n');
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if (p) *p = '\0';
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DEBUG_("downloaded quote: " << buf);
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amount_t price;
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price.parse(buf);
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commodity.add_price(now, price);
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commodity.history()->last_lookup = now;
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cache_dirty = true;
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assert(! price_db.empty());
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#if defined(__GNUG__) && __GNUG__ < 3
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ofstream database(price_db, ios::out | ios::app);
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#else
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ofstream database(price_db, std::ios_base::out | std::ios_base::app);
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#endif
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#if 0
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// jww (2007-04-18): Need to convert to local time and print
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// here, print with UTC timezone specifier
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database << "P " << now.to_string("%Y/%m/%d %H:%M:%S")
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<< " " << commodity.symbol << " " << price << endl;
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#endif
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return price;
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} else {
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throw_(download_error,
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"Failed to download price for '" << commodity.symbol() <<
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"' (command: \"getquote " << commodity.base_symbol() << "\")");
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}
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return none;
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}
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} // namespace ledger
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