mirror of
https://github.com/love2d/love.git
synced 2026-08-12 16:40:57 +02:00
Alex Szpakowski
137 lines
3.3 KiB
C++
137 lines
3.3 KiB
C++
/**
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* Copyright (c) 2006-2017 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#include "File.h"
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namespace love
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{
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namespace filesystem
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{
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love::Type File::type("File", &Object::type);
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File::~File()
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{
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}
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FileData *File::read(int64 size)
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{
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bool isopen = isOpen();
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if (!isopen && !open(MODE_READ))
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throw love::Exception("Could not read file %s.", getFilename().c_str());
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int64 max = getSize();
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int64 cur = tell();
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size = (size == ALL) ? max : size;
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if (size < 0)
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throw love::Exception("Invalid read size.");
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// Clamping because the file offset may be in a weird position.
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if (cur < 0)
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cur = 0;
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else if (cur > max)
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cur = max;
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if (cur + size > max)
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size = max - cur;
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FileData *fileData = new FileData(size, getFilename());
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int64 bytesRead = read(fileData->getData(), size);
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if (bytesRead < 0 || (bytesRead == 0 && bytesRead != size))
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{
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delete fileData;
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throw love::Exception("Could not read from file.");
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}
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if (bytesRead < size)
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{
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FileData *tmpFileData = new FileData(bytesRead, getFilename());
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memcpy(tmpFileData->getData(), fileData->getData(), (size_t) bytesRead);
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fileData->release();
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fileData = tmpFileData;
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}
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if (!isopen)
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close();
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return fileData;
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}
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bool File::write(const Data *data, int64 size)
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{
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return write(data->getData(), (size == ALL) ? data->getSize() : size);
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}
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std::string File::getExtension() const
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{
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const std::string &filename = getFilename();
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std::string::size_type idx = filename.rfind('.');
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if (idx != std::string::npos)
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return filename.substr(idx+1);
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else
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return std::string();
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}
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bool File::getConstant(const char *in, Mode &out)
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{
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return modes.find(in, out);
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}
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bool File::getConstant(Mode in, const char *&out)
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{
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return modes.find(in, out);
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}
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bool File::getConstant(const char *in, BufferMode &out)
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{
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return bufferModes.find(in, out);
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}
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bool File::getConstant(BufferMode in, const char *&out)
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{
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return bufferModes.find(in, out);
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}
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StringMap<File::Mode, File::MODE_MAX_ENUM>::Entry File::modeEntries[] =
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{
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{"c", File::MODE_CLOSED},
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{"r", File::MODE_READ},
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{"w", File::MODE_WRITE},
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{"a", File::MODE_APPEND},
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};
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StringMap<File::Mode, File::MODE_MAX_ENUM> File::modes(File::modeEntries, sizeof(File::modeEntries));
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StringMap<File::BufferMode, File::BUFFER_MAX_ENUM>::Entry File::bufferModeEntries[] =
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{
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{"none", File::BUFFER_NONE},
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{"line", File::BUFFER_LINE},
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{"full", File::BUFFER_FULL},
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};
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StringMap<File::BufferMode, File::BUFFER_MAX_ENUM> File::bufferModes(File::bufferModeEntries, sizeof(File::bufferModeEntries));
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} // filesystem
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} // love
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