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