Diff: mbed-dev-master/platform/Stream.h

Revision:

0:bb348c97df44

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-dev-master/platform/Stream.h	Wed Sep 16 01:11:49 2020 +0000
@@ -0,0 +1,98 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef MBED_STREAM_H
+#define MBED_STREAM_H
+
+#include "platform/platform.h"
+#include "platform/FileLike.h"
+#include "platform/FileHandle.h"
+#include "platform/NonCopyable.h"
+#include <cstdio>
+#include <cstdarg>
+
+namespace mbed {
+/** \addtogroup platform */
+/** @{*/
+/**
+ * \defgroup platform_Stream Stream class
+ * @{
+ */
+
+extern void mbed_set_unbuffered_stream(std::FILE *_file);
+extern int mbed_getc(std::FILE *_file);
+extern char *mbed_gets(char *s, int size, std::FILE *_file);
+
+/** File stream
+ *
+ * @note Synchronization level: Set by subclass
+ */
+class Stream : public FileLike, private NonCopyable<Stream> {
+
+public:
+    Stream(const char *name = NULL);
+    virtual ~Stream();
+
+    int putc(int c);
+    int puts(const char *s);
+    int getc();
+    char *gets(char *s, int size);
+    int printf(const char *format, ...);
+    int scanf(const char *format, ...);
+    int vprintf(const char *format, std::va_list args);
+    int vscanf(const char *format, std::va_list args);
+
+    operator std::FILE *()
+    {
+        return _file;
+    }
+
+protected:
+    virtual int close();
+    virtual ssize_t write(const void *buffer, size_t length);
+    virtual ssize_t read(void *buffer, size_t length);
+    virtual off_t seek(off_t offset, int whence);
+    virtual off_t tell();
+    virtual void rewind();
+    virtual int isatty();
+    virtual int sync();
+    virtual off_t size();
+
+    virtual int _putc(int c) = 0;
+    virtual int _getc() = 0;
+
+    std::FILE *_file;
+
+    /** Acquire exclusive access to this object.
+     */
+    virtual void lock()
+    {
+        // Stub
+    }
+
+    /** Release exclusive access to this object.
+     */
+    virtual void unlock()
+    {
+        // Stub
+    }
+};
+/**@}*/
+
+/**@}*/
+} // namespace mbed
+
+#endif
+