111 lines
3.9 KiB
C++
111 lines
3.9 KiB
C++
/*
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* Copyright (c) 2003-2012, 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 <system.hh>
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#include "amount.h"
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#include "commodity.h"
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#include "pool.h"
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#include "quotes.h"
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namespace ledger {
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optional<price_point_t>
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commodity_quote_from_script(commodity_t& commodity,
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const optional<commodity_t&>& exchange_commodity)
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{
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DEBUG("commodity.download", "downloading quote for symbol " << commodity.symbol());
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#if defined(DEBUG_ON)
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if (exchange_commodity)
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DEBUG("commodity.download",
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" in terms of commodity " << exchange_commodity->symbol());
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#endif
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char buf[256];
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buf[0] = '\0';
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string getquote_cmd("getquote \"");
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getquote_cmd += commodity.symbol();
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getquote_cmd += "\" \"";
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if (exchange_commodity)
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getquote_cmd += exchange_commodity->symbol();
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getquote_cmd += "\"";
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DEBUG("commodity.download", "invoking command: " << getquote_cmd);
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bool success = true;
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#ifndef WIN32
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if (FILE * fp = popen(getquote_cmd.c_str(), "r")) {
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if (std::feof(fp) || ! std::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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if (char * p = std::strchr(buf, '\n')) *p = '\0';
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DEBUG("commodity.download", "downloaded quote: " << buf);
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if (optional<std::pair<commodity_t *, price_point_t> > point =
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commodity_pool_t::current_pool->parse_price_directive(buf)) {
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if (commodity_pool_t::current_pool->price_db) {
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#if defined(__GNUG__) && __GNUG__ < 3
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ofstream database(*commodity_pool_t::current_pool->price_db,
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ios::out | ios::app);
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#else
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ofstream database(*commodity_pool_t::current_pool->price_db,
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std::ios_base::out | std::ios_base::app);
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#endif
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database << "P "
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<< format_datetime(point->second.when, FMT_WRITTEN)
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<< " " << commodity.symbol()
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<< " " << point->second.price
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<< std::endl;
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}
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return point->second;
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}
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} else {
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DEBUG("commodity.download",
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"Failed to download price for '" << commodity.symbol() <<
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"' (command: \"getquote " << commodity.symbol() <<
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" " << (exchange_commodity ?
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exchange_commodity->symbol() : "''") << "\")");
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// Don't try to download this commodity again.
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commodity.add_flags(COMMODITY_NOMARKET);
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}
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#endif
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return none;
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}
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} // namespace ledger
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