1 files changed, 101 insertions, 0 deletions
diff --git a/gfx/skia/skia/src/core/SkOSFile.h b/gfx/skia/skia/src/core/SkOSFile.h
new file mode 100644
index 0000000000..2f9eccf193
--- /dev/null
+++ b/gfx/skia/skia/src/core/SkOSFile.h
@@ -0,0 +1,101 @@
+/*
+ * 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 <stdio.h>
+
+#include "include/core/SkString.h"
+#include "include/private/base/SkTemplates.h"
+
+enum SkFILE_Flags {
+    kRead_SkFILE_Flag   = 0x01,
+    kWrite_SkFILE_Flag  = 0x02
+};
+
+FILE* sk_fopen(const char path[], SkFILE_Flags);
+void    sk_fclose(FILE*);
+
+size_t  sk_fgetsize(FILE*);
+
+size_t  sk_fwrite(const void* buffer, size_t byteCount, FILE*);
+
+void    sk_fflush(FILE*);
+void    sk_fsync(FILE*);
+
+size_t  sk_ftell(FILE*);
+
+/** 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(FILE* 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(FILE* a, FILE* b);
+
+/** Returns the underlying file descriptor for the given file.
+ *  The return value will be < 0 on failure.
+ */
+int     sk_fileno(FILE* f);
+
+/** Returns true if something (file, directory, ???) exists at this path,
+ *  and has the specified access flags.
+ */
+bool    sk_exists(const char *path, SkFILE_Flags = (SkFILE_Flags)0);
+
+// Returns true if a directory exists at this path.
+bool    sk_isdir(const char *path);
+
+// Like pread, but may affect the file position marker.
+// Returns the number of bytes read or SIZE_MAX if failed.
+size_t sk_qread(FILE*, void* buffer, size_t count, size_t offset);
+
+
+// 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:
+        // SPI for module use.
+        SK_SPI Iter();
+        SK_SPI Iter(const char path[], const char suffix[] = nullptr);
+        SK_SPI ~Iter();
+
+        SK_SPI void reset(const char path[], const char suffix[] = nullptr);
+        /** If getDir is true, only returns directories.
+            Results are undefined if true and false calls are
+            interleaved on a single iterator.
+        */
+        SK_SPI bool next(SkString* name, bool getDir = false);
+
+        static const size_t kStorageSize = 40;
+    private:
+        alignas(void*) alignas(double) char fSelf[kStorageSize];
+    };
+};
+
+#endif