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Stream.cpp
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2006-2013 ARM Limited 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 #include "Stream.h" 00017 00018 namespace mbed { 00019 00020 Stream::Stream(const char *name) : FileLike(name), _file(NULL) { 00021 /* open ourselves */ 00022 char buf[12]; /* :0x12345678 + null byte */ 00023 std::sprintf(buf, ":%p", this); 00024 _file = std::fopen(buf, "w+"); 00025 mbed_set_unbuffered_stream(_file); 00026 } 00027 00028 Stream::~Stream() { 00029 fclose(_file); 00030 } 00031 00032 int Stream::putc(int c) { 00033 fflush(_file); 00034 return std::fputc(c, _file); 00035 } 00036 int Stream::puts(const char *s) { 00037 fflush(_file); 00038 return std::fputs(s, _file); 00039 } 00040 int Stream::getc() { 00041 fflush(_file); 00042 return mbed_getc(_file); 00043 } 00044 char* Stream::gets(char *s, int size) { 00045 fflush(_file); 00046 return mbed_gets(s,size,_file); 00047 } 00048 00049 int Stream::close() { 00050 return 0; 00051 } 00052 00053 ssize_t Stream::write(const void* buffer, size_t length) { 00054 const char* ptr = (const char*)buffer; 00055 const char* end = ptr + length; 00056 while (ptr != end) { 00057 if (_putc(*ptr++) == EOF) { 00058 break; 00059 } 00060 } 00061 return ptr - (const char*)buffer; 00062 } 00063 00064 ssize_t Stream::read(void* buffer, size_t length) { 00065 char* ptr = (char*)buffer; 00066 char* end = ptr + length; 00067 while (ptr != end) { 00068 int c = _getc(); 00069 if (c==EOF) break; 00070 *ptr++ = c; 00071 } 00072 return ptr - (const char*)buffer; 00073 } 00074 00075 off_t Stream::lseek(off_t offset, int whence) { 00076 return 0; 00077 } 00078 00079 int Stream::isatty() { 00080 return 0; 00081 } 00082 00083 int Stream::fsync() { 00084 return 0; 00085 } 00086 00087 off_t Stream::flen() { 00088 return 0; 00089 } 00090 00091 int Stream::printf(const char* format, ...) { 00092 std::va_list arg; 00093 va_start(arg, format); 00094 fflush(_file); 00095 int r = vfprintf(_file, format, arg); 00096 va_end(arg); 00097 return r; 00098 } 00099 00100 int Stream::scanf(const char* format, ...) { 00101 std::va_list arg; 00102 va_start(arg, format); 00103 fflush(_file); 00104 int r = vfscanf(_file, format, arg); 00105 va_end(arg); 00106 return r; 00107 } 00108 00109 int Stream::vprintf(const char* format, std::va_list args) { 00110 fflush(_file); 00111 int r = vfprintf(_file, format, args); 00112 return r; 00113 } 00114 00115 int Stream::vscanf(const char* format, std::va_list args) { 00116 fflush(_file); 00117 int r = vfscanf(_file, format, args); 00118 return r; 00119 } 00120 00121 } // namespace mbed
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