Nicolas Borla / Mbed OS BBR_1Ebene

BBR 1 Ebene

mbed-os/platform/Stream.cpp@0:fbdae7e6d805, 2018-05-14 (annotated)

Committer:
borlanic
Date:
Mon May 14 11:29:06 2018 +0000
Revision:
0:fbdae7e6d805
BBR

Who changed what in which revision?

UserRevisionLine numberNew contents of line
borlanic 0:fbdae7e6d805 1 /* mbed Microcontroller Library
borlanic 0:fbdae7e6d805 2 * Copyright (c) 2006-2013 ARM Limited
borlanic 0:fbdae7e6d805 3 *
borlanic 0:fbdae7e6d805 4 * Licensed under the Apache License, Version 2.0 (the "License");
borlanic 0:fbdae7e6d805 5 * you may not use this file except in compliance with the License.
borlanic 0:fbdae7e6d805 6 * You may obtain a copy of the License at
borlanic 0:fbdae7e6d805 7 *
borlanic 0:fbdae7e6d805 8 * http://www.apache.org/licenses/LICENSE-2.0
borlanic 0:fbdae7e6d805 9 *
borlanic 0:fbdae7e6d805 10 * Unless required by applicable law or agreed to in writing, software
borlanic 0:fbdae7e6d805 11 * distributed under the License is distributed on an "AS IS" BASIS,
borlanic 0:fbdae7e6d805 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
borlanic 0:fbdae7e6d805 13 * See the License for the specific language governing permissions and
borlanic 0:fbdae7e6d805 14 * limitations under the License.
borlanic 0:fbdae7e6d805 15 */
borlanic 0:fbdae7e6d805 16 #include "platform/Stream.h"
borlanic 0:fbdae7e6d805 17 #include "platform/mbed_error.h"
borlanic 0:fbdae7e6d805 18 #include <errno.h>
borlanic 0:fbdae7e6d805 19
borlanic 0:fbdae7e6d805 20 namespace mbed {
borlanic 0:fbdae7e6d805 21
borlanic 0:fbdae7e6d805 22 Stream::Stream(const char *name) : FileLike(name), _file(NULL) {
borlanic 0:fbdae7e6d805 23 // No lock needed in constructor
borlanic 0:fbdae7e6d805 24 /* open ourselves */
borlanic 0:fbdae7e6d805 25 _file = fdopen(this, "w+");
borlanic 0:fbdae7e6d805 26 // fdopen() will make us buffered because Stream::isatty()
borlanic 0:fbdae7e6d805 27 // wrongly returns zero which is not being changed for
borlanic 0:fbdae7e6d805 28 // backward compatibility
borlanic 0:fbdae7e6d805 29 if (_file) {
borlanic 0:fbdae7e6d805 30 mbed_set_unbuffered_stream(_file);
borlanic 0:fbdae7e6d805 31 } else {
borlanic 0:fbdae7e6d805 32 error("Stream obj failure, errno=%d\r\n", errno);
borlanic 0:fbdae7e6d805 33 }
borlanic 0:fbdae7e6d805 34 }
borlanic 0:fbdae7e6d805 35
borlanic 0:fbdae7e6d805 36 Stream::~Stream() {
borlanic 0:fbdae7e6d805 37 // No lock can be used in destructor
borlanic 0:fbdae7e6d805 38 fclose(_file);
borlanic 0:fbdae7e6d805 39 }
borlanic 0:fbdae7e6d805 40
borlanic 0:fbdae7e6d805 41 int Stream::putc(int c) {
borlanic 0:fbdae7e6d805 42 lock();
borlanic 0:fbdae7e6d805 43 fflush(_file);
borlanic 0:fbdae7e6d805 44 int ret = std::fputc(c, _file);
borlanic 0:fbdae7e6d805 45 unlock();
borlanic 0:fbdae7e6d805 46 return ret;
borlanic 0:fbdae7e6d805 47 }
borlanic 0:fbdae7e6d805 48 int Stream::puts(const char *s) {
borlanic 0:fbdae7e6d805 49 lock();
borlanic 0:fbdae7e6d805 50 fflush(_file);
borlanic 0:fbdae7e6d805 51 int ret = std::fputs(s, _file);
borlanic 0:fbdae7e6d805 52 unlock();
borlanic 0:fbdae7e6d805 53 return ret;
borlanic 0:fbdae7e6d805 54 }
borlanic 0:fbdae7e6d805 55 int Stream::getc() {
borlanic 0:fbdae7e6d805 56 lock();
borlanic 0:fbdae7e6d805 57 fflush(_file);
borlanic 0:fbdae7e6d805 58 int ret = mbed_getc(_file);
borlanic 0:fbdae7e6d805 59 unlock();
borlanic 0:fbdae7e6d805 60 return ret;
borlanic 0:fbdae7e6d805 61 }
borlanic 0:fbdae7e6d805 62 char* Stream::gets(char *s, int size) {
borlanic 0:fbdae7e6d805 63 lock();
borlanic 0:fbdae7e6d805 64 fflush(_file);
borlanic 0:fbdae7e6d805 65 char *ret = mbed_gets(s,size,_file);
borlanic 0:fbdae7e6d805 66 unlock();
borlanic 0:fbdae7e6d805 67 return ret;
borlanic 0:fbdae7e6d805 68 }
borlanic 0:fbdae7e6d805 69
borlanic 0:fbdae7e6d805 70 int Stream::close() {
borlanic 0:fbdae7e6d805 71 return 0;
borlanic 0:fbdae7e6d805 72 }
borlanic 0:fbdae7e6d805 73
borlanic 0:fbdae7e6d805 74 ssize_t Stream::write(const void* buffer, size_t length) {
borlanic 0:fbdae7e6d805 75 const char* ptr = (const char*)buffer;
borlanic 0:fbdae7e6d805 76 const char* end = ptr + length;
borlanic 0:fbdae7e6d805 77
borlanic 0:fbdae7e6d805 78 lock();
borlanic 0:fbdae7e6d805 79 while (ptr != end) {
borlanic 0:fbdae7e6d805 80 if (_putc(*ptr++) == EOF) {
borlanic 0:fbdae7e6d805 81 break;
borlanic 0:fbdae7e6d805 82 }
borlanic 0:fbdae7e6d805 83 }
borlanic 0:fbdae7e6d805 84 unlock();
borlanic 0:fbdae7e6d805 85
borlanic 0:fbdae7e6d805 86 return ptr - (const char*)buffer;
borlanic 0:fbdae7e6d805 87 }
borlanic 0:fbdae7e6d805 88
borlanic 0:fbdae7e6d805 89 ssize_t Stream::read(void* buffer, size_t length) {
borlanic 0:fbdae7e6d805 90 char* ptr = (char*)buffer;
borlanic 0:fbdae7e6d805 91 char* end = ptr + length;
borlanic 0:fbdae7e6d805 92
borlanic 0:fbdae7e6d805 93 lock();
borlanic 0:fbdae7e6d805 94 while (ptr != end) {
borlanic 0:fbdae7e6d805 95 int c = _getc();
borlanic 0:fbdae7e6d805 96 if (c==EOF) break;
borlanic 0:fbdae7e6d805 97 *ptr++ = c;
borlanic 0:fbdae7e6d805 98 }
borlanic 0:fbdae7e6d805 99 unlock();
borlanic 0:fbdae7e6d805 100
borlanic 0:fbdae7e6d805 101 return ptr - (const char*)buffer;
borlanic 0:fbdae7e6d805 102 }
borlanic 0:fbdae7e6d805 103
borlanic 0:fbdae7e6d805 104 off_t Stream::seek(off_t offset, int whence) {
borlanic 0:fbdae7e6d805 105 return 0;
borlanic 0:fbdae7e6d805 106 }
borlanic 0:fbdae7e6d805 107
borlanic 0:fbdae7e6d805 108 off_t Stream::tell() {
borlanic 0:fbdae7e6d805 109 return 0;
borlanic 0:fbdae7e6d805 110 }
borlanic 0:fbdae7e6d805 111
borlanic 0:fbdae7e6d805 112 void Stream::rewind() {
borlanic 0:fbdae7e6d805 113 }
borlanic 0:fbdae7e6d805 114
borlanic 0:fbdae7e6d805 115 int Stream::isatty() {
borlanic 0:fbdae7e6d805 116 return 0;
borlanic 0:fbdae7e6d805 117 }
borlanic 0:fbdae7e6d805 118
borlanic 0:fbdae7e6d805 119 int Stream::sync() {
borlanic 0:fbdae7e6d805 120 return 0;
borlanic 0:fbdae7e6d805 121 }
borlanic 0:fbdae7e6d805 122
borlanic 0:fbdae7e6d805 123 off_t Stream::size() {
borlanic 0:fbdae7e6d805 124 return 0;
borlanic 0:fbdae7e6d805 125 }
borlanic 0:fbdae7e6d805 126
borlanic 0:fbdae7e6d805 127 int Stream::printf(const char* format, ...) {
borlanic 0:fbdae7e6d805 128 lock();
borlanic 0:fbdae7e6d805 129 std::va_list arg;
borlanic 0:fbdae7e6d805 130 va_start(arg, format);
borlanic 0:fbdae7e6d805 131 fflush(_file);
borlanic 0:fbdae7e6d805 132 int r = vfprintf(_file, format, arg);
borlanic 0:fbdae7e6d805 133 va_end(arg);
borlanic 0:fbdae7e6d805 134 unlock();
borlanic 0:fbdae7e6d805 135 return r;
borlanic 0:fbdae7e6d805 136 }
borlanic 0:fbdae7e6d805 137
borlanic 0:fbdae7e6d805 138 int Stream::scanf(const char* format, ...) {
borlanic 0:fbdae7e6d805 139 lock();
borlanic 0:fbdae7e6d805 140 std::va_list arg;
borlanic 0:fbdae7e6d805 141 va_start(arg, format);
borlanic 0:fbdae7e6d805 142 fflush(_file);
borlanic 0:fbdae7e6d805 143 int r = vfscanf(_file, format, arg);
borlanic 0:fbdae7e6d805 144 va_end(arg);
borlanic 0:fbdae7e6d805 145 unlock();
borlanic 0:fbdae7e6d805 146 return r;
borlanic 0:fbdae7e6d805 147 }
borlanic 0:fbdae7e6d805 148
borlanic 0:fbdae7e6d805 149 int Stream::vprintf(const char* format, std::va_list args) {
borlanic 0:fbdae7e6d805 150 lock();
borlanic 0:fbdae7e6d805 151 fflush(_file);
borlanic 0:fbdae7e6d805 152 int r = vfprintf(_file, format, args);
borlanic 0:fbdae7e6d805 153 unlock();
borlanic 0:fbdae7e6d805 154 return r;
borlanic 0:fbdae7e6d805 155 }
borlanic 0:fbdae7e6d805 156
borlanic 0:fbdae7e6d805 157 int Stream::vscanf(const char* format, std::va_list args) {
borlanic 0:fbdae7e6d805 158 lock();
borlanic 0:fbdae7e6d805 159 fflush(_file);
borlanic 0:fbdae7e6d805 160 int r = vfscanf(_file, format, args);
borlanic 0:fbdae7e6d805 161 unlock();
borlanic 0:fbdae7e6d805 162 return r;
borlanic 0:fbdae7e6d805 163 }
borlanic 0:fbdae7e6d805 164
borlanic 0:fbdae7e6d805 165 } // namespace mbed