forked from ethereum/aleth
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathCommonJS.cpp
More file actions
103 lines (87 loc) · 2.05 KB
/
CommonJS.cpp
File metadata and controls
103 lines (87 loc) · 2.05 KB
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
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file CommonJS.cpp
* @authors:
* Gav Wood <i@gavwood.com>
* Marek Kotewicz <marek@ethdev.com>
* @date 2014
*/
#include "CommonJS.h"
using namespace std;
namespace dev
{
bytes jsToBytes(string const& _s)
{
if (_s.substr(0, 2) == "0x")
// Hex
return fromHex(_s.substr(2));
else if (_s.find_first_not_of("0123456789") == string::npos)
// Decimal
return toCompactBigEndian(bigint(_s));
else
return bytes();
}
bytes padded(bytes _b, unsigned _l)
{
while (_b.size() < _l)
_b.insert(_b.begin(), 0);
return asBytes(asString(_b).substr(_b.size() - max(_l, _l)));
}
bytes paddedRight(bytes _b, unsigned _l)
{
_b.resize(_l);
return _b;
}
bytes unpadded(bytes _b)
{
auto p = asString(_b).find_last_not_of((char)0);
_b.resize(p == string::npos ? 0 : (p + 1));
return _b;
}
bytes unpadLeft(bytes _b)
{
unsigned int i = 0;
if (_b.size() == 0)
return _b;
while (i < _b.size() && _b[i] == byte(0))
i++;
if (i != 0)
_b.erase(_b.begin(), _b.begin() + i);
return _b;
}
string fromRaw(h256 _n, unsigned* _inc)
{
if (_n)
{
string s((char const*)_n.data(), 32);
auto l = s.find_first_of('\0');
if (!l)
return "";
if (l != string::npos)
{
auto p = s.find_first_not_of('\0', l);
if (!(p == string::npos || (_inc && p == 31)))
return "";
if (_inc)
*_inc = (byte)s[31];
s.resize(l);
}
for (auto i: s)
if (i < 32)
return "";
return s;
}
return "";
}
}