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December 14, 2015 03:33
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A pure Lua module for Garry's Mod that provides the same functionality as the gm_vfs module by wrapping gm_filesystem.
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| --[[ | |
| gm_filesystem wrapper for gm_vfs | |
| A pure Lua module for Garry's Mod that provides the same functionality | |
| as the gm_vfs module by wrapping gm_filesystem. | |
| ----------------------------------------------------------------------- | |
| Copyright (c) 2015, Daniel Almeida | |
| All rights reserved. | |
| 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. | |
| ]] | |
| require("filesystem") | |
| VFS_SEEK_SET = filesystem.SEEK_SET | |
| VFS_SEEK_CURRENT = filesystem.SEEK_CUR | |
| VFS_SEEK_END = filesystem.SEEK_END | |
| VFS_WRITE_DATA = 0 | |
| VFS_WRITE_STRING = 1 | |
| VFS_WRITE_UINT32 = 2 | |
| VFS_WRITE_UINT16 = 3 | |
| VFS_WRITE_UINT8 = 4 | |
| VFS_WRITE_FLOAT = 5 | |
| VFS_WRITE_DOUBLE = 6 | |
| VFS_WRITE_BYTE = 7 | |
| VFS_READ_STRING = 1 | |
| VFS_READ_UINT32 = 2 | |
| VFS_READ_UINT16 = 3 | |
| VFS_READ_UINT8 = 4 | |
| VFS_READ_FLOAT = 5 | |
| VFS_READ_DOUBLE = 6 | |
| VFS_READ_BYTE = 7 | |
| vfs = {} | |
| function vfs.Close(handle) | |
| handle:Close() | |
| end | |
| function vfs.Write(handle, write_type, data) | |
| if write_type == VFS_WRITE_DATA then | |
| return handle:Write(data) | |
| elseif write_type == VFS_WRITE_STRING then | |
| return handle:WriteString(data) | |
| elseif write_type == VFS_WRITE_UINT32 then | |
| return handle:WriteUInt(data, 32) | |
| elseif write_type == VFS_WRITE_UINT16 then | |
| return handle:WriteUInt(data, 16) | |
| elseif write_type == VFS_WRITE_UINT8 or write_type == VFS_WRITE_BYTE then | |
| return handle:WriteUInt(data, 8) | |
| elseif write_type == VFS_WRITE_FLOAT then | |
| return handle:WriteFloat(data) | |
| elseif write_type == VFS_WRITE_DOUBLE then | |
| return handle:WriteDouble(data) | |
| end | |
| error("unrecognized value type") | |
| end | |
| function vfs.Read(handle, read_type) | |
| if read_type == VFS_WRITE_STRING then | |
| return handle:ReadString() | |
| elseif read_type == VFS_WRITE_UINT32 then | |
| return handle:ReadUInt(32) | |
| elseif read_type == VFS_WRITE_UINT16 then | |
| return handle:ReadUInt(16) | |
| elseif read_type == VFS_WRITE_UINT8 or read_type == VFS_WRITE_BYTE then | |
| return handle:ReadUInt(8) | |
| elseif read_type == VFS_WRITE_FLOAT then | |
| return handle:ReadFloat() | |
| elseif read_type == VFS_WRITE_DOUBLE then | |
| return handle:ReadDouble() | |
| end | |
| error("unrecognized value type") | |
| end | |
| function vfs.Seek(handle, pos, method) | |
| return handle:Seek(pos, method) | |
| end | |
| function vfs.Tell(handle) | |
| return handle:Tell() | |
| end | |
| function vfs.EOF(handle) | |
| return handle:EOF() | |
| end | |
| function vfs.RemoveFile(filepath) | |
| return filesystem.Remove(filepath, "VFS") | |
| end | |
| function vfs.CRC32(handle) | |
| print(debug.traceback("gm_vfs wrapper tried to call vfs.CRC32")) | |
| end | |
| local meta = { | |
| Close = function(self) return vfs.Close(self.handle) end, | |
| Write = function(self, write_type, data) return vfs.Write(self.handle, write_type, data) end, | |
| Read = function(self, read_type) return vfs.Read(self.handle, read_type) end, | |
| Seek = function(self, pos, method) return vfs.Seek(self.handle, pos, method) end, | |
| Tell = function(self) return vfs.Tell(self.handle) end, | |
| EOF = function(self) return vfs.EOF(self.handle) end, | |
| CRC32 = function(self) return vfs.CRC32(self.handle) end | |
| } | |
| function vfs.Open(filepath, mode) | |
| local handle = filesystem.Open(filepath, mode, "VFS") | |
| if IsValid(handle) then | |
| return setmetatable({handle = handle}, meta) | |
| end | |
| end |
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