tmk_core/tool/mbed/mbed-sdk/libraries/mbed/api/Stream.h

   1 /* mbed Microcontroller Library
   2  * Copyright (c) 2006-2013 ARM Limited
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 #ifndef MBED_STREAM_H
  17 #define MBED_STREAM_H
  18
  19 #include "platform.h"
  20 #include "FileLike.h"
  21
  22 namespace mbed {
  23
  24 extern void mbed_set_unbuffered_stream(FILE *_file);
  25 extern int mbed_getc(FILE *_file);
  26 extern char* mbed_gets(char *s, int size, FILE *_file);
  27
  28 class Stream : public FileLike {
  29
  30 public:
  31     Stream(const char *name=NULL);
  32     virtual ~Stream();
  33
  34     int putc(int c);
  35     int puts(const char *s);
  36     int getc();
  37     char *gets(char *s, int size);
  38     int printf(const char* format, ...);
  39     int scanf(const char* format, ...);
  40
  41     operator std::FILE*() {return _file;}
  42
  43 protected:
  44     virtual int close();
  45     virtual ssize_t write(const void* buffer, size_t length);
  46     virtual ssize_t read(void* buffer, size_t length);
  47     virtual off_t lseek(off_t offset, int whence);
  48     virtual int isatty();
  49     virtual int fsync();
  50     virtual off_t flen();
  51
  52     virtual int _putc(int c) = 0;
  53     virtual int _getc() = 0;
  54
  55     std::FILE *_file;
  56
  57     /* disallow copy constructor and assignment operators */
  58 private:
  59     Stream(const Stream&);
  60     Stream & operator = (const Stream&);
  61 };
  62
  63 } // namespace mbed
  64
  65 #endif