- moved file system implementation to 'common'.

src/common/filesystem/file_directory.cpp

@@ -0,0 +1,262 @@
+/*
+** file_directory.cpp
+**
+**---------------------------------------------------------------------------
+** Copyright 2008-2009 Randy Heit
+** Copyright 2009 Christoph Oelckers
+** 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. The name of the author may not be used to endorse or promote products
+**    derived from this software without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+**---------------------------------------------------------------------------
+**
+**
+*/
+
+
+#include <sys/stat.h>
+
+#include "resourcefile.h"
+#include "cmdlib.h"
+#include "printf.h"
+#include "findfile.h"
+
+
+
+//==========================================================================
+//
+// Zip Lump
+//
+//==========================================================================
+
+struct FDirectoryLump : public FResourceLump
+{
+	FileReader NewReader() override;
+	int FillCache() override;
+
+	FString mFullPath;
+};
+
+
+//==========================================================================
+//
+// Zip file
+//
+//==========================================================================
+
+class FDirectory : public FResourceFile
+{
+	TArray<FDirectoryLump> Lumps;
+	const bool nosubdir;
+
+	int AddDirectory(const char *dirpath);
+	void AddEntry(const char *fullpath, int size);
+
+public:
+	FDirectory(const char * dirname, bool nosubdirflag = false);
+	bool Open(bool quiet, LumpFilterInfo* filter);
+	virtual FResourceLump *GetLump(int no) { return ((unsigned)no < NumLumps)? &Lumps[no] : NULL; }
+};
+
+
+
+//==========================================================================
+//
+// 
+//
+//==========================================================================
+
+FDirectory::FDirectory(const char * directory, bool nosubdirflag)
+: FResourceFile(NULL), nosubdir(nosubdirflag)
+{
+	FString dirname;
+
+	#ifdef _WIN32
+		directory = _fullpath(NULL, directory, _MAX_PATH);
+	#else
+		// Todo for Linux: Resolve the path before using it
+	#endif
+	dirname = directory;
+#ifdef _WIN32
+	free((void *)directory);
+#endif
+	dirname.Substitute("\\", "/");
+	if (dirname[dirname.Len()-1] != '/') dirname += '/';
+	FileName = dirname;
+}
+
+
+//==========================================================================
+//
+// Windows version
+//
+//==========================================================================
+
+int FDirectory::AddDirectory(const char *dirpath)
+{
+	void * handle;
+	int count = 0;
+
+	FString dirmatch = dirpath;
+	findstate_t find;
+	dirmatch += '*';
+	
+	handle = I_FindFirst(dirmatch.GetChars(), &find);
+	if (handle == ((void *)(-1)))
+	{
+		Printf("Could not scan '%s': %s\n", dirpath, strerror(errno));
+	}
+	else
+	{
+		do
+		{
+			// I_FindName only returns the file's name and not its full path
+			auto attr = I_FindAttr(&find);
+			if (attr & FA_HIDDEN)
+			{
+				// Skip hidden files and directories. (Prevents SVN bookkeeping
+				// info from being included.)
+				continue;
+			}
+			FString fi = I_FindName(&find);
+			if (attr &  FA_DIREC)
+			{
+				if (nosubdir || (fi[0] == '.' &&
+								 (fi[1] == '\0' ||
+								  (fi[1] == '.' && fi[2] == '\0'))))
+				{
+					// Do not record . and .. directories.
+					continue;
+				}
+				FString newdir = dirpath;
+				newdir << fi << '/';
+				count += AddDirectory(newdir);
+			}
+			else
+			{
+				if (strstr(fi, ".orig") || strstr(fi, ".bak"))
+				{
+					// We shouldn't add backup files to the file system
+					continue;
+				}
+				size_t size = 0;
+				FString fn = FString(dirpath) + fi;
+				if (GetFileInfo(fn, &size, nullptr))
+				{
+					AddEntry(fn, (int)size);
+					count++;
+				}
+			}
+
+		} while (I_FindNext (handle, &find) == 0);
+		I_FindClose (handle);
+	}
+	return count;
+}
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
+bool FDirectory::Open(bool quiet, LumpFilterInfo* filter)
+{
+	NumLumps = AddDirectory(FileName);
+	PostProcessArchive(&Lumps[0], sizeof(FDirectoryLump), filter);
+	return true;
+}
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
+void FDirectory::AddEntry(const char *fullpath, int size)
+{
+	FDirectoryLump *lump_p = &Lumps[Lumps.Reserve(1)];
+
+	// Store the full path here so that we can access the file later, even if it is from a filter directory.
+	lump_p->mFullPath = fullpath;
+
+	// [mxd] Convert name to lowercase
+	FString name = fullpath + strlen(FileName);
+	name.ToLower();
+
+	// The lump's name is only the part relative to the main directory
+	lump_p->LumpNameSetup(name);
+	lump_p->LumpSize = size;
+	lump_p->Owner = this;
+	lump_p->Flags = 0;
+	lump_p->CheckEmbedded();
+}
+
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
+FileReader FDirectoryLump::NewReader()
+{
+	FileReader fr;
+	fr.OpenFile(mFullPath);
+	return fr;
+}
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
+int FDirectoryLump::FillCache()
+{
+	FileReader fr;
+	Cache = new char[LumpSize];
+	if (!fr.OpenFile(mFullPath))
+	{
+		memset(Cache, 0, LumpSize);
+		return 0;
+	}
+	fr.Read(Cache, LumpSize);
+	RefCount = 1;
+	return 1;
+}
+
+//==========================================================================
+//
+// File open
+//
+//==========================================================================
+
+FResourceFile *CheckDir(const char *filename, bool quiet, bool nosubdirflag, LumpFilterInfo* filter)
+{
+	FResourceFile *rf = new FDirectory(filename, nosubdirflag);
+	if (rf->Open(quiet, filter)) return rf;
+	delete rf;
+	return NULL;
+}
+