aboutsummaryrefslogtreecommitdiff
path: root/src/univalue/lib/univalue_write.cpp
blob: 18833077b773868c5deae74ed69572bc5d1b335f (plain)
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
107
108
109
110
111
112
113
114
// Copyright 2014 BitPay Inc.
// Distributed under the MIT software license, see the accompanying
// file COPYING or https://opensource.org/licenses/mit-license.php.

#include <univalue.h>
#include "univalue_escapes.h"

#include <memory>
#include <string>
#include <vector>

static std::string json_escape(const std::string& inS)
{
    std::string outS;
    outS.reserve(inS.size() * 2);

    for (unsigned int i = 0; i < inS.size(); i++) {
        unsigned char ch = static_cast<unsigned char>(inS[i]);
        const char *escStr = escapes[ch];

        if (escStr)
            outS += escStr;
        else
            outS += static_cast<char>(ch);
    }

    return outS;
}

std::string UniValue::write(unsigned int prettyIndent,
                            unsigned int indentLevel) const
{
    std::string s;
    s.reserve(1024);

    unsigned int modIndent = indentLevel;
    if (modIndent == 0)
        modIndent = 1;

    switch (typ) {
    case VNULL:
        s += "null";
        break;
    case VOBJ:
        writeObject(prettyIndent, modIndent, s);
        break;
    case VARR:
        writeArray(prettyIndent, modIndent, s);
        break;
    case VSTR:
        s += "\"" + json_escape(val) + "\"";
        break;
    case VNUM:
        s += val;
        break;
    case VBOOL:
        s += (val == "1" ? "true" : "false");
        break;
    }

    return s;
}

static void indentStr(unsigned int prettyIndent, unsigned int indentLevel, std::string& s)
{
    s.append(prettyIndent * indentLevel, ' ');
}

void UniValue::writeArray(unsigned int prettyIndent, unsigned int indentLevel, std::string& s) const
{
    s += "[";
    if (prettyIndent)
        s += "\n";

    for (unsigned int i = 0; i < values.size(); i++) {
        if (prettyIndent)
            indentStr(prettyIndent, indentLevel, s);
        s += values[i].write(prettyIndent, indentLevel + 1);
        if (i != (values.size() - 1)) {
            s += ",";
        }
        if (prettyIndent)
            s += "\n";
    }

    if (prettyIndent)
        indentStr(prettyIndent, indentLevel - 1, s);
    s += "]";
}

void UniValue::writeObject(unsigned int prettyIndent, unsigned int indentLevel, std::string& s) const
{
    s += "{";
    if (prettyIndent)
        s += "\n";

    for (unsigned int i = 0; i < keys.size(); i++) {
        if (prettyIndent)
            indentStr(prettyIndent, indentLevel, s);
        s += "\"" + json_escape(keys[i]) + "\":";
        if (prettyIndent)
            s += " ";
        s += values.at(i).write(prettyIndent, indentLevel + 1);
        if (i != (values.size() - 1))
            s += ",";
        if (prettyIndent)
            s += "\n";
    }

    if (prettyIndent)
        indentStr(prettyIndent, indentLevel - 1, s);
    s += "}";
}