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// Copyright 2020 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// GEN_BUILD:CONDITION(tint_build_is_win)
#include <cstring>
#include "src/tint/utils/diagnostic/printer.h"
#define WIN32_LEAN_AND_MEAN 1
#include <Windows.h>
namespace tint::diag {
namespace {
struct ConsoleInfo {
HANDLE handle = INVALID_HANDLE_VALUE;
WORD default_attributes = 0;
operator bool() const { return handle != INVALID_HANDLE_VALUE; }
};
ConsoleInfo console_info(FILE* file) {
if (file == nullptr) {
return {};
}
ConsoleInfo console{};
if (file == stdout) {
console.handle = GetStdHandle(STD_OUTPUT_HANDLE);
} else if (file == stderr) {
console.handle = GetStdHandle(STD_ERROR_HANDLE);
} else {
return {};
}
CONSOLE_SCREEN_BUFFER_INFO info{};
if (GetConsoleScreenBufferInfo(console.handle, &info) == 0) {
return {};
}
console.default_attributes = info.wAttributes;
return console;
}
class PrinterWindows : public Printer {
public:
PrinterWindows(FILE* f, bool use_colors)
: file(f), console(console_info(use_colors ? f : nullptr)) {}
void write(const std::string& str, const Style& style) override {
write_color(style.color, style.bold);
fwrite(str.data(), 1, str.size(), file);
write_color(Color::kDefault, false);
}
private:
WORD attributes(Color color, bool bold) {
switch (color) {
case Color::kDefault:
return console.default_attributes;
case Color::kBlack:
return 0;
case Color::kRed:
return FOREGROUND_RED | (bold ? FOREGROUND_INTENSITY : 0);
case Color::kGreen:
return FOREGROUND_GREEN | (bold ? FOREGROUND_INTENSITY : 0);
case Color::kYellow:
return FOREGROUND_RED | FOREGROUND_GREEN | (bold ? FOREGROUND_INTENSITY : 0);
case Color::kBlue:
return FOREGROUND_BLUE | (bold ? FOREGROUND_INTENSITY : 0);
case Color::kMagenta:
return FOREGROUND_RED | FOREGROUND_BLUE | (bold ? FOREGROUND_INTENSITY : 0);
case Color::kCyan:
return FOREGROUND_GREEN | FOREGROUND_BLUE | (bold ? FOREGROUND_INTENSITY : 0);
case Color::kWhite:
return FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE |
(bold ? FOREGROUND_INTENSITY : 0);
}
return 0; // unreachable
}
void write_color(Color color, bool bold) {
if (console) {
SetConsoleTextAttribute(console.handle, attributes(color, bold));
fflush(file);
}
}
FILE* const file;
const ConsoleInfo console;
};
} // namespace
std::unique_ptr<Printer> Printer::create(FILE* out, bool use_colors) {
return std::make_unique<PrinterWindows>(out, use_colors);
}
} // namespace tint::diag