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120 lines
3.4 KiB
C++
120 lines
3.4 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/File.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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static bool use_color = false;
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static void print(const String& name, const JsonValue&, Vector<String>& trail);
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static const char* color_name = "";
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static const char* color_index = "";
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static const char* color_brace = "";
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static const char* color_bool = "";
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static const char* color_null = "";
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static const char* color_string = "";
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static const char* color_off = "";
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int main(int argc, char** argv)
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{
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if (pledge("stdio tty rpath", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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if (isatty(STDOUT_FILENO))
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use_color = true;
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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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if (argc != 2 || !strcmp(argv[1], "--help")) {
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fprintf(stderr, "usage: gron <file>\n");
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fprintf(stderr, "Print each value in a JSON file with its fully expanded key.\n");
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return 0;
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}
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auto file = Core::File::construct(argv[1]);
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if (!file->open(Core::OpenMode::ReadOnly)) {
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fprintf(stderr, "Couldn't open %s for reading: %s\n", argv[1], 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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VERIFY(json.has_value());
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if (use_color) {
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color_name = "\033[33;1m";
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color_index = "\033[35;1m";
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color_brace = "\033[36m";
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color_bool = "\033[32;1m";
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color_string = "\033[31;1m";
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color_null = "\033[34;1m";
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color_off = "\033[0m";
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}
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Vector<String> trail;
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print("json", json.value(), trail);
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return 0;
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}
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static void print(const String& name, const JsonValue& value, Vector<String>& trail)
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{
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for (size_t i = 0; i < trail.size(); ++i)
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printf("%s", trail[i].characters());
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printf("%s%s%s = ", color_name, name.characters(), color_off);
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if (value.is_object()) {
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printf("%s{}%s;\n", color_brace, color_off);
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trail.append(String::formatted("{}{}{}.", color_name, name, color_off));
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value.as_object().for_each_member([&](auto& on, auto& ov) { print(on, ov, trail); });
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trail.take_last();
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return;
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}
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if (value.is_array()) {
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printf("%s[]%s;\n", color_brace, color_off);
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trail.append(String::formatted("{}{}{}", color_name, name, color_off));
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for (int i = 0; i < value.as_array().size(); ++i) {
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auto element_name = String::formatted("{}{}[{}{}{}{}{}]{}", color_off, color_brace, color_off, color_index, i, color_off, color_brace, color_off);
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print(element_name, value.as_array()[i], trail);
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}
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trail.take_last();
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return;
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}
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switch (value.type()) {
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case JsonValue::Type::Null:
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printf("%s", color_null);
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break;
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case JsonValue::Type::Bool:
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printf("%s", color_bool);
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break;
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case JsonValue::Type::String:
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printf("%s", color_string);
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break;
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default:
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printf("%s", color_index);
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break;
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}
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printf("%s%s;\n", value.serialized<StringBuilder>().characters(), color_off);
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}
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