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filesystem/linux_support.h

@@ -0,0 +1,58 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose:
+// 
+// $NoKeywords: $
+//=============================================================================//
+#ifndef LINUX_SUPPORT_H
+#define LINUX_SUPPORT_H
+
+#include <ctype.h> // tolower()
+#include <limits.h> // PATH_MAX define 
+#include <string.h> //strcmp, strcpy
+#include <sys/stat.h> // stat()
+#include <unistd.h> 
+#include <dirent.h> // scandir()
+#include <stdlib.h>
+#include <stdio.h>
+#include "tier0/platform.h"
+
+#define FILE_ATTRIBUTE_DIRECTORY S_IFDIR
+
+typedef struct 
+{
+	// public data
+	int dwFileAttributes;
+	char cFileName[PATH_MAX]; // the file name returned from the call
+	char cBaseDir[PATH_MAX]; // the root dir for this find
+
+	int numMatches;
+	int curMatch;
+	struct dirent **namelist;  
+} FIND_DATA;
+
+#define WIN32_FIND_DATA FIND_DATA
+
+HANDLE FindFirstFile( const char *findName, FIND_DATA *dat);
+bool FindNextFile(HANDLE handle, FIND_DATA *dat);
+bool FindClose(HANDLE handle);
+
+// findFileInDirCaseInsensitive looks for the specified file. It returns
+// false if no directory separator is found. Otherwise it looks for the
+// requested file by scanning the specified directory and doing a case
+// insensitive match. If the file exists (in any case) then the correctly cased
+// filename will be returned in the user's buffer and 'true' will be returned.
+// If the file does not exist then the filename will be lowercased and 'false'
+// will be returned.
+// This function uses a static buffer for internal purposes and is therefore
+// not thread safe, so it must only be called from the main thread.
+bool findFileInDirCaseInsensitive( const char *file, OUT_Z_BYTECAP(bufSize) char* output, size_t bufSize );
+// The _safe version of this function should be preferred since it always infers
+// the directory size correctly.
+template<size_t bufSize>
+bool findFileInDirCaseInsensitive_safe( const char *file, OUT_Z_ARRAY char (&output)[bufSize] )
+{
+	return findFileInDirCaseInsensitive( file, output, bufSize );
+}
+
+#endif // LINUX_SUPPORT_H