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587f9af960
Also add slightly richer parse errors now that we can include a string literal with returned errors. This will allow us to use TRY() when working with JSON data.
123 lines
3.6 KiB
C++
123 lines
3.6 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Assertions.h>
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#include <AK/ByteBuffer.h>
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#include <AK/JsonArray.h>
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#include <AK/JsonObject.h>
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#include <AK/JsonValue.h>
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#include <AK/StringBuilder.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/File.h>
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#include <stdio.h>
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#include <unistd.h>
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static void print(const JsonValue& value, int spaces_per_indent, int indent = 0, bool use_color = true);
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static void print_indent(int indent, int spaces_per_indent)
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{
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for (int i = 0; i < indent * spaces_per_indent; ++i)
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out(" ");
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}
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int main(int argc, char** argv)
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{
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if (pledge("stdio rpath", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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const char* path = nullptr;
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int spaces_in_indent = 4;
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Core::ArgsParser args_parser;
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args_parser.set_general_help("Pretty-print a JSON file with syntax-coloring and indentation.");
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args_parser.add_option(spaces_in_indent, "Indent size", "indent-size", 'i', "spaces_in_indent");
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args_parser.add_positional_argument(path, "Path to JSON file", "path", Core::ArgsParser::Required::No);
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VERIFY(spaces_in_indent >= 0);
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args_parser.parse(argc, argv);
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if (path == nullptr)
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path = "/dev/stdin";
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auto file = Core::File::construct(path);
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if (!file->open(Core::OpenMode::ReadOnly)) {
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warnln("Couldn't open {} for reading: {}", path, file->error_string());
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return 1;
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}
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if (pledge("stdio", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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auto file_contents = file->read_all();
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auto json = JsonValue::from_string(file_contents);
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if (json.is_error()) {
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warnln("Couldn't parse {} as JSON", path);
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return 1;
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}
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print(json.value(), spaces_in_indent, 0, isatty(STDOUT_FILENO));
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outln();
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return 0;
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}
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void print(const JsonValue& value, int spaces_per_indent, int indent, bool use_color)
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{
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if (value.is_object()) {
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size_t printed_members = 0;
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auto& object = value.as_object();
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outln("{{");
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object.for_each_member([&](auto& member_name, auto& member_value) {
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++printed_members;
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print_indent(indent + 1, spaces_per_indent);
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if (use_color)
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out("\"\033[33;1m{}\033[0m\": ", member_name);
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else
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out("\"{}\": ", member_name);
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print(member_value, spaces_per_indent, indent + 1, use_color);
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if (printed_members < static_cast<size_t>(object.size()))
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out(",");
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outln();
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});
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print_indent(indent, spaces_per_indent);
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out("}}");
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return;
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}
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if (value.is_array()) {
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size_t printed_entries = 0;
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auto array = value.as_array();
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outln("[");
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array.for_each([&](auto& entry_value) {
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++printed_entries;
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print_indent(indent + 1, spaces_per_indent);
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print(entry_value, spaces_per_indent, indent + 1, use_color);
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if (printed_entries < static_cast<size_t>(array.size()))
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out(",");
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outln();
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});
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print_indent(indent, spaces_per_indent);
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out("]");
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return;
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}
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if (use_color) {
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if (value.is_string())
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out("\033[31;1m");
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else if (value.is_number())
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out("\033[35;1m");
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else if (value.is_bool())
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out("\033[32;1m");
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else if (value.is_null())
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out("\033[34;1m");
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}
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if (value.is_string())
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out("\"");
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out("{}", value.to_string());
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if (value.is_string())
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out("\"");
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if (use_color)
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out("\033[0m");
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}
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