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/*
* Copyright (c) 2023 The Khronos Group Inc.
* Copyright (c) 2023 Valve Corporation
* Copyright (c) 2023 LunarG, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and/or associated documentation files (the "Materials"), to
* deal in the Materials without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Materials, and to permit persons to whom the Materials are
* furnished to do so, subject to the following conditions:
*
* The above copyright notice(s) and this permission notice shall be included in
* all copies or substantial portions of the Materials.
*
* THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
*
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR THE
* USE OR OTHER DEALINGS IN THE MATERIALS.
*
* Author: Charles Giessen <charles@lunarg.com>
*/
#pragma once
#include <cstdint>
#include <stack>
#include <string>
// Utility class to simplify the writing of JSON manifest files
struct JsonWriter {
std::string output;
// the bool represents whether an object has been written & a comma is needed
std::stack<bool> stack;
void StartObject() {
CommaAndNewLine();
Indent();
output += "{";
stack.push(false);
}
void StartKeyedObject(std::string const& key) {
CommaAndNewLine();
Indent();
output += "\"" + key + "\": {";
stack.push(false);
}
void EndObject() {
stack.pop();
output += "\n";
Indent();
output += "}";
}
void StartKeyedArray(std::string const& key) {
CommaAndNewLine();
Indent();
output += "\"" + key + "\": [";
stack.push(false);
}
void StartArray() {
CommaAndNewLine();
Indent();
output += "[";
stack.push(false);
}
void EndArray() {
stack.pop();
output += "\n";
Indent();
output += "]";
}
void AddKeyedString(std::string const& key, std::string const& value) {
CommaAndNewLine();
Indent();
output += "\"" + key + "\": \"" + escape(value) + "\"";
}
void AddString(std::string const& value) {
CommaAndNewLine();
Indent();
output += "\"" + escape(value) + "\"";
}
#if defined(WIN32)
void AddKeyedString(std::string const& key, std::wstring const& value) {
CommaAndNewLine();
Indent();
output += "\"" + key + "\": \"" + escape(narrow(value)) + "\"";
}
void AddString(std::wstring const& value) {
CommaAndNewLine();
Indent();
output += "\"" + escape(narrow(value)) + "\"";
}
#endif
void AddKeyedBool(std::string const& key, bool value) {
CommaAndNewLine();
Indent();
output += "\"" + key + "\": " + (value ? "true" : "false");
}
void AddBool(bool value) {
CommaAndNewLine();
Indent();
output += std::string(value ? "true" : "false");
}
// Json doesn't allow `\` in strings, it must be escaped. Thus we have to convert '\\' to '\\\\' in strings
static std::string escape(std::string const& in_path) {
std::string out;
for (auto& c : in_path) {
if (c == '\\')
out += "\\\\";
else
out += c;
}
return out;
}
static std::string escape(std::filesystem::path const& in_path) { return escape(narrow(in_path.native())); }
private:
void CommaAndNewLine() {
if (stack.size() > 0) {
if (stack.top() == false) {
stack.top() = true;
} else {
output += ",";
}
output += "\n";
}
}
void Indent() {
for (uint32_t i = 0; i < stack.size(); i++) {
output += '\t';
}
}
};
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