diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/include/core/SkOSFile.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/include/core/SkOSFile.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,159 @@
+
+/*
+ * Copyright 2006 The Android Open Source Project
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+
+// TODO: add unittests for all these operations
+
+#ifndef SkOSFile_DEFINED
+#define SkOSFile_DEFINED
+
+#include "SkString.h"
+
+#if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_UNIX) || defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_IOS)
+    #include <dirent.h>
+#endif
+
+#include <stddef.h> // ptrdiff_t
+
+struct SkFILE;
+
+enum SkFILE_Flags {
+    kRead_SkFILE_Flag   = 0x01,
+    kWrite_SkFILE_Flag  = 0x02
+};
+
+#ifdef _WIN32
+const static char SkPATH_SEPARATOR = '\\';
+#else
+const static char SkPATH_SEPARATOR = '/';
+#endif
+
+SkFILE* sk_fopen(const char path[], SkFILE_Flags);
+void    sk_fclose(SkFILE*);
+
+size_t  sk_fgetsize(SkFILE*);
+/** Return true if the file could seek back to the beginning
+*/
+bool    sk_frewind(SkFILE*);
+
+size_t  sk_fread(void* buffer, size_t byteCount, SkFILE*);
+size_t  sk_fwrite(const void* buffer, size_t byteCount, SkFILE*);
+
+char*   sk_fgets(char* str, int size, SkFILE* f);
+
+void    sk_fflush(SkFILE*);
+
+bool    sk_fseek(SkFILE*, size_t);
+bool    sk_fmove(SkFILE*, long);
+size_t  sk_ftell(SkFILE*);
+
+/** Maps a file into memory. Returns the address and length on success, NULL otherwise.
+ *  The mapping is read only.
+ *  When finished with the mapping, free the returned pointer with sk_fmunmap.
+ */
+void*   sk_fmmap(SkFILE* f, size_t* length);
+
+/** Maps a file descriptor into memory. Returns the address and length on success, NULL otherwise.
+ *  The mapping is read only.
+ *  When finished with the mapping, free the returned pointer with sk_fmunmap.
+ */
+void*   sk_fdmmap(int fd, size_t* length);
+
+/** Unmaps a file previously mapped by sk_fmmap or sk_fdmmap.
+ *  The length parameter must be the same as returned from sk_fmmap.
+ */
+void    sk_fmunmap(const void* addr, size_t length);
+
+/** Returns true if the two point at the exact same filesystem object. */
+bool    sk_fidentical(SkFILE* a, SkFILE* b);
+
+/** Returns the underlying file descriptor for the given file.
+ *  The return value will be < 0 on failure.
+ */
+int     sk_fileno(SkFILE* f);
+
+// Returns true if something (file, directory, ???) exists at this path.
+bool    sk_exists(const char *path);
+
+// Returns true if a directory exists at this path.
+bool    sk_isdir(const char *path);
+
+// Have we reached the end of the file?
+int sk_feof(SkFILE *);
+
+
+// Create a new directory at this path; returns true if successful.
+// If the directory already existed, this will return true.
+// Description of the error, if any, will be written to stderr.
+bool    sk_mkdir(const char* path);
+
+class SkOSFile {
+public:
+    class Iter {
+    public:
+        Iter();
+        Iter(const char path[], const char suffix[] = NULL);
+        ~Iter();
+
+        void reset(const char path[], const char suffix[] = NULL);
+        /** If getDir is true, only returns directories.
+            Results are undefined if true and false calls are
+            interleaved on a single iterator.
+        */
+        bool next(SkString* name, bool getDir = false);
+
+    private:
+#ifdef SK_BUILD_FOR_WIN
+        HANDLE      fHandle;
+        uint16_t*   fPath16;
+#elif defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_UNIX) || defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_IOS)
+        DIR*        fDIR;
+        SkString    fPath, fSuffix;
+#endif
+    };
+};
+
+class SkUTF16_Str {
+public:
+    SkUTF16_Str(const char src[]);
+    ~SkUTF16_Str()
+    {
+        sk_free(fStr);
+    }
+    const uint16_t* get() const { return fStr; }
+
+private:
+    uint16_t*   fStr;
+};
+
+/**
+ *  Functions for modifying SkStrings which represent paths on the filesystem.
+ */
+class SkOSPath {
+public:
+    /**
+     * Assembles rootPath and relativePath into a single path, like this:
+     * rootPath/relativePath.
+     * It is okay to call with a NULL rootPath and/or relativePath. A path
+     * separator will still be inserted.
+     *
+     * Uses SkPATH_SEPARATOR, to work on all platforms.
+     */
+    static SkString SkPathJoin(const char *rootPath, const char *relativePath);
+
+    /**
+     *  Return the name of the file, ignoring the directory structure.
+     *  Behaves like python's os.path.basename. If the fullPath is
+     *  /dir/subdir/, an empty string is returned.
+     *  @param fullPath Full path to the file.
+     *  @return SkString The basename of the file - anything beyond the
+     *      final slash, or the full name if there is no slash.
+     */
+    static SkString SkBasename(const char* fullPath);
+};
+#endif