janwas
1861448e6c
also rename wchar -> utf8 to avoid conflict with <wchar.h> (requires rebuild of workspace) (unfortunately copying history fails to "502 bad gateway"; had to delete old + add new independently) This was SVN commit r7340.
105 lines
3.5 KiB
C++
105 lines
3.5 KiB
C++
/* Copyright (c) 2010 Wildfire Games
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* look up directories/files by traversing path components.
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*/
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#include "precompiled.h"
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#include "lib/file/vfs/vfs_lookup.h"
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#include "lib/path_util.h" // path_foreach_component
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#include "lib/file/vfs/vfs.h" // error codes
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#include "lib/file/vfs/vfs_tree.h"
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#include "lib/file/vfs/vfs_populate.h"
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#include "lib/timer.h"
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LibError vfs_Lookup(const VfsPath& pathname, VfsDirectory* startDirectory, VfsDirectory*& directory, VfsFile** pfile, size_t flags)
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{
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// extract and validate flags (ensure no unknown bits are set)
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const bool addMissingDirectories = (flags & VFS_LOOKUP_ADD) != 0;
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const bool createMissingDirectories = (flags & VFS_LOOKUP_CREATE) != 0;
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debug_assert((flags & ~(VFS_LOOKUP_ADD|VFS_LOOKUP_CREATE)) == 0);
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if(pfile)
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*pfile = 0;
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directory = startDirectory;
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RETURN_ERR(vfs_Populate(directory));
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// early-out for pathname == "" when mounting into VFS root
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if(pathname.empty()) // (prevent iterator error in loop end condition)
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return INFO::OK;
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// for each directory component:
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VfsPath::iterator it; // (used outside of loop to get filename)
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for(it = pathname.begin(); it != --pathname.end(); ++it)
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{
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const std::wstring& subdirectoryName = *it;
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VfsDirectory* subdirectory = directory->GetSubdirectory(subdirectoryName);
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if(!subdirectory)
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{
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if(addMissingDirectories)
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subdirectory = directory->AddSubdirectory(subdirectoryName);
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else
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return ERR::VFS_DIR_NOT_FOUND; // NOWARN
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}
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if(createMissingDirectories && !subdirectory->AssociatedDirectory())
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{
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fs::wpath currentPath;
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if(directory->AssociatedDirectory()) // (is NULL when mounting into root)
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currentPath = directory->AssociatedDirectory()->Path();
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currentPath /= subdirectoryName;
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const int ret = wmkdir(currentPath.string().c_str(), S_IRWXU);
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if(ret == 0)
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{
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PRealDirectory realDirectory(new RealDirectory(currentPath, 0, 0));
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RETURN_ERR(vfs_Attach(subdirectory, realDirectory));
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}
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else if(errno != EEXIST) // notify of unexpected failures
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{
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debug_printf(L"mkdir failed with errno=%d\n", errno);
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debug_assert(0);
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}
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}
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RETURN_ERR(vfs_Populate(subdirectory));
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directory = subdirectory;
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}
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if(pfile)
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{
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const std::wstring& filename = *it;
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debug_assert(filename != L"."); // asked for file but specified directory path
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*pfile = directory->GetFile(filename);
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if(!*pfile)
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return ERR::VFS_FILE_NOT_FOUND; // NOWARN
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}
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return INFO::OK;
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}
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