From 2dfe2cdd1f4e963e6faaccd5ca29bc6d8fe4ae30 Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Wed, 18 Dec 2019 23:38:16 +0100
Subject: Add a FileManager and File class

---
 src/filemanager.hpp | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 src/filemanager.hpp

(limited to 'src/filemanager.hpp')

diff --git a/src/filemanager.hpp b/src/filemanager.hpp
new file mode 100644
index 00000000..19478c48
--- /dev/null
+++ b/src/filemanager.hpp
@@ -0,0 +1,68 @@
+/******************************************************************************
+ * Project:  PROJ
+ * Purpose:  File manager
+ * Author:   Even Rouault, <even.rouault at spatialys.com>
+ *
+ ******************************************************************************
+ * Copyright (c) 2019, Even Rouault, <even.rouault at spatialys.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *****************************************************************************/
+
+#ifndef FILEMANAGER_HPP_INCLUDED
+#define FILEMANAGER_HPP_INCLUDED
+
+#include <memory>
+
+#include "proj.h"
+#include "proj/util.hpp"
+
+NS_PROJ_START
+
+class File;
+
+class FileManager {
+  private:
+    FileManager() = delete;
+
+  public:
+    // "Low-level" interface.
+    static std::unique_ptr<File> open(PJ_CONTEXT *ctx, const char *filename);
+
+    // "High-level" interface, honoring PROJ_LIB and the like.
+    static std::unique_ptr<File> open_resource_file(PJ_CONTEXT *ctx,
+                                                    const char *name);
+};
+
+// ---------------------------------------------------------------------------
+
+class File {
+  protected:
+    File();
+
+  public:
+    virtual ~File();
+    virtual size_t read(void *buffer, size_t sizeBytes) = 0;
+    virtual bool seek(unsigned long long offset, int whence = SEEK_SET) = 0;
+    virtual unsigned long long tell() = 0;
+};
+
+NS_PROJ_END
+
+#endif // FILEMANAGER_HPP_INCLUDED
\ No newline at end of file
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