jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <AK/JsonArray.h>
8#include <AK/JsonObject.h>
9#include <AK/JsonValue.h>
10#include <AK/StringBuilder.h>
11#include <LibCore/ArgsParser.h>
12#include <LibCore/File.h>
13#include <LibCore/System.h>
14#include <LibMain/Main.h>
15#include <unistd.h>
16
17static bool use_color = false;
18static void print(StringView name, JsonValue const&, Vector<DeprecatedString>& trail);
19
20static StringView color_name = ""sv;
21static StringView color_index = ""sv;
22static StringView color_brace = ""sv;
23static StringView color_bool = ""sv;
24static StringView color_null = ""sv;
25static StringView color_string = ""sv;
26static StringView color_off = ""sv;
27
28ErrorOr<int> serenity_main(Main::Arguments arguments)
29{
30 TRY(Core::System::pledge("stdio rpath tty"));
31
32 if (isatty(STDOUT_FILENO))
33 use_color = true;
34
35 TRY(Core::System::pledge("stdio rpath"));
36
37 Core::ArgsParser args_parser;
38 args_parser.set_general_help("Print each value in a JSON file with its fully expanded key.");
39
40 StringView path;
41 args_parser.add_option(use_color, "Colorize output (default on tty)", "colorize", 'c');
42 args_parser.add_option(Core::ArgsParser::Option {
43 Core::ArgsParser::OptionArgumentMode::None,
44 "Monochrome (don't colorize output)",
45 "monochrome",
46 'm',
47 nullptr,
48 [](StringView s) {
49 VERIFY(s.is_empty());
50 use_color = false;
51 return true;
52 },
53 });
54 args_parser.add_positional_argument(path, "Input", "input", Core::ArgsParser::Required::No);
55 args_parser.parse(arguments);
56
57 auto file = TRY(Core::File::open_file_or_standard_stream(path, Core::File::OpenMode::Read));
58
59 TRY(Core::System::pledge("stdio"));
60
61 auto file_contents = TRY(file->read_until_eof());
62 auto json = TRY(JsonValue::from_string(file_contents));
63
64 if (use_color) {
65 color_name = "\033[33;1m"sv;
66 color_index = "\033[35;1m"sv;
67 color_brace = "\033[36m"sv;
68 color_bool = "\033[32;1m"sv;
69 color_string = "\033[31;1m"sv;
70 color_null = "\033[34;1m"sv;
71 color_off = "\033[0m"sv;
72 }
73
74 Vector<DeprecatedString> trail;
75 print("json"sv, json, trail);
76 return 0;
77}
78
79static void print(StringView name, JsonValue const& value, Vector<DeprecatedString>& trail)
80{
81 for (size_t i = 0; i < trail.size(); ++i)
82 out("{}", trail[i]);
83
84 out("{}{}{} = ", color_name, name, color_off);
85
86 if (value.is_object()) {
87 outln("{}{{}}{};", color_brace, color_off);
88 trail.append(DeprecatedString::formatted("{}{}{}.", color_name, name, color_off));
89 value.as_object().for_each_member([&](auto& on, auto& ov) { print(on, ov, trail); });
90 trail.take_last();
91 return;
92 }
93 if (value.is_array()) {
94 outln("{}[]{};", color_brace, color_off);
95 trail.append(DeprecatedString::formatted("{}{}{}", color_name, name, color_off));
96 for (size_t i = 0; i < value.as_array().size(); ++i) {
97 auto element_name = DeprecatedString::formatted("{}{}[{}{}{}{}{}]{}", color_off, color_brace, color_off, color_index, i, color_off, color_brace, color_off);
98 print(element_name, value.as_array()[i], trail);
99 }
100 trail.take_last();
101 return;
102 }
103 switch (value.type()) {
104 case JsonValue::Type::Null:
105 out("{}", color_null);
106 break;
107 case JsonValue::Type::Bool:
108 out("{}", color_bool);
109 break;
110 case JsonValue::Type::String:
111 out("{}", color_string);
112 break;
113 default:
114 out("{}", color_index);
115 break;
116 }
117
118 outln("{}{};", value.serialized<StringBuilder>(), color_off);
119}