1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/*
* Copyright (c) 2003-2023, 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 <system.hh>
#include "amount.h"
#include "commodity.h"
#include "pool.h"
#include "quotes.h"
namespace ledger {
optional<price_point_t>
commodity_quote_from_script(commodity_t& commodity,
const commodity_t * exchange_commodity)
{
DEBUG("commodity.download", "downloading quote for symbol " << commodity.symbol());
#if DEBUG_ON
if (exchange_commodity)
DEBUG("commodity.download",
" in terms of commodity " << exchange_commodity->symbol());
#endif
char buf[256];
buf[0] = '\0';
string getquote_cmd("getquote \"");
getquote_cmd += commodity.symbol();
getquote_cmd += "\" \"";
if (exchange_commodity)
getquote_cmd += exchange_commodity->symbol();
getquote_cmd += "\"";
DEBUG("commodity.download", "invoking command: " << getquote_cmd);
bool success = true;
#if !defined(_WIN32) && !defined(__CYGWIN__)
if (FILE * fp = popen(getquote_cmd.c_str(), "r")) {
if (std::feof(fp) || ! std::fgets(buf, 255, fp))
success = false;
if (pclose(fp) != 0)
success = false;
} else {
success = false;
}
if (success && buf[0]) {
if (char * p = std::strchr(buf, '\n')) *p = '\0';
DEBUG("commodity.download", "downloaded quote: " << buf);
if (optional<std::pair<commodity_t *, price_point_t> > point =
commodity_pool_t::current_pool->parse_price_directive(buf)) {
if (commodity_pool_t::current_pool->price_db) {
ofstream database(*commodity_pool_t::current_pool->price_db,
std::ios_base::out | std::ios_base::app);
database << "P "
<< format_datetime(point->second.when, FMT_WRITTEN)
<< " " << commodity.symbol()
<< " " << point->second.price
<< std::endl;
}
return point->second;
}
} else {
DEBUG("commodity.download",
"Failed to download price for '" << commodity.symbol() <<
"' (command: \"getquote " << commodity.symbol() <<
" " << (exchange_commodity ?
exchange_commodity->symbol() : "''") << "\")");
// Don't try to download this commodity again.
commodity.add_flags(COMMODITY_NOMARKET);
}
#endif
return none;
}
} // namespace ledger
|
