Rahul Dahiya / Mbed OS STM32F7 Ethernet

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mbed-os/platform/Stream.cpp@0:fb8047b156bb, 2020-01-15 (annotated)

Committer:
rahul_dahiya
Date:
Wed Jan 15 15:57:15 2020 +0530
Revision:
0:fb8047b156bb
STM32F7 LWIP

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rahul_dahiya 0:fb8047b156bb 1 /* mbed Microcontroller Library
rahul_dahiya 0:fb8047b156bb 2 * Copyright (c) 2006-2013 ARM Limited
rahul_dahiya 0:fb8047b156bb 3 *
rahul_dahiya 0:fb8047b156bb 4 * Licensed under the Apache License, Version 2.0 (the "License");
rahul_dahiya 0:fb8047b156bb 5 * you may not use this file except in compliance with the License.
rahul_dahiya 0:fb8047b156bb 6 * You may obtain a copy of the License at
rahul_dahiya 0:fb8047b156bb 7 *
rahul_dahiya 0:fb8047b156bb 8 * http://www.apache.org/licenses/LICENSE-2.0
rahul_dahiya 0:fb8047b156bb 9 *
rahul_dahiya 0:fb8047b156bb 10 * Unless required by applicable law or agreed to in writing, software
rahul_dahiya 0:fb8047b156bb 11 * distributed under the License is distributed on an "AS IS" BASIS,
rahul_dahiya 0:fb8047b156bb 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rahul_dahiya 0:fb8047b156bb 13 * See the License for the specific language governing permissions and
rahul_dahiya 0:fb8047b156bb 14 * limitations under the License.
rahul_dahiya 0:fb8047b156bb 15 */
rahul_dahiya 0:fb8047b156bb 16 #include "platform/Stream.h"
rahul_dahiya 0:fb8047b156bb 17 #include "platform/mbed_error.h"
rahul_dahiya 0:fb8047b156bb 18 #include <errno.h>
rahul_dahiya 0:fb8047b156bb 19
rahul_dahiya 0:fb8047b156bb 20 namespace mbed {
rahul_dahiya 0:fb8047b156bb 21
rahul_dahiya 0:fb8047b156bb 22 Stream::Stream(const char *name) : FileLike(name), _file(NULL) {
rahul_dahiya 0:fb8047b156bb 23 // No lock needed in constructor
rahul_dahiya 0:fb8047b156bb 24 /* open ourselves */
rahul_dahiya 0:fb8047b156bb 25 _file = fdopen(this, "w+");
rahul_dahiya 0:fb8047b156bb 26 // fdopen() will make us buffered because Stream::isatty()
rahul_dahiya 0:fb8047b156bb 27 // wrongly returns zero which is not being changed for
rahul_dahiya 0:fb8047b156bb 28 // backward compatibility
rahul_dahiya 0:fb8047b156bb 29 if (_file) {
rahul_dahiya 0:fb8047b156bb 30 mbed_set_unbuffered_stream(_file);
rahul_dahiya 0:fb8047b156bb 31 } else {
rahul_dahiya 0:fb8047b156bb 32 error("Stream obj failure, errno=%d\r\n", errno);
rahul_dahiya 0:fb8047b156bb 33 }
rahul_dahiya 0:fb8047b156bb 34 }
rahul_dahiya 0:fb8047b156bb 35
rahul_dahiya 0:fb8047b156bb 36 Stream::~Stream() {
rahul_dahiya 0:fb8047b156bb 37 // No lock can be used in destructor
rahul_dahiya 0:fb8047b156bb 38 fclose(_file);
rahul_dahiya 0:fb8047b156bb 39 }
rahul_dahiya 0:fb8047b156bb 40
rahul_dahiya 0:fb8047b156bb 41 int Stream::putc(int c) {
rahul_dahiya 0:fb8047b156bb 42 lock();
rahul_dahiya 0:fb8047b156bb 43 fflush(_file);
rahul_dahiya 0:fb8047b156bb 44 int ret = std::fputc(c, _file);
rahul_dahiya 0:fb8047b156bb 45 unlock();
rahul_dahiya 0:fb8047b156bb 46 return ret;
rahul_dahiya 0:fb8047b156bb 47 }
rahul_dahiya 0:fb8047b156bb 48 int Stream::puts(const char *s) {
rahul_dahiya 0:fb8047b156bb 49 lock();
rahul_dahiya 0:fb8047b156bb 50 fflush(_file);
rahul_dahiya 0:fb8047b156bb 51 int ret = std::fputs(s, _file);
rahul_dahiya 0:fb8047b156bb 52 unlock();
rahul_dahiya 0:fb8047b156bb 53 return ret;
rahul_dahiya 0:fb8047b156bb 54 }
rahul_dahiya 0:fb8047b156bb 55 int Stream::getc() {
rahul_dahiya 0:fb8047b156bb 56 lock();
rahul_dahiya 0:fb8047b156bb 57 fflush(_file);
rahul_dahiya 0:fb8047b156bb 58 int ret = mbed_getc(_file);
rahul_dahiya 0:fb8047b156bb 59 unlock();
rahul_dahiya 0:fb8047b156bb 60 return ret;
rahul_dahiya 0:fb8047b156bb 61 }
rahul_dahiya 0:fb8047b156bb 62 char* Stream::gets(char *s, int size) {
rahul_dahiya 0:fb8047b156bb 63 lock();
rahul_dahiya 0:fb8047b156bb 64 fflush(_file);
rahul_dahiya 0:fb8047b156bb 65 char *ret = mbed_gets(s,size,_file);
rahul_dahiya 0:fb8047b156bb 66 unlock();
rahul_dahiya 0:fb8047b156bb 67 return ret;
rahul_dahiya 0:fb8047b156bb 68 }
rahul_dahiya 0:fb8047b156bb 69
rahul_dahiya 0:fb8047b156bb 70 int Stream::close() {
rahul_dahiya 0:fb8047b156bb 71 return 0;
rahul_dahiya 0:fb8047b156bb 72 }
rahul_dahiya 0:fb8047b156bb 73
rahul_dahiya 0:fb8047b156bb 74 ssize_t Stream::write(const void* buffer, size_t length) {
rahul_dahiya 0:fb8047b156bb 75 const char* ptr = (const char*)buffer;
rahul_dahiya 0:fb8047b156bb 76 const char* end = ptr + length;
rahul_dahiya 0:fb8047b156bb 77
rahul_dahiya 0:fb8047b156bb 78 lock();
rahul_dahiya 0:fb8047b156bb 79 while (ptr != end) {
rahul_dahiya 0:fb8047b156bb 80 if (_putc(*ptr++) == EOF) {
rahul_dahiya 0:fb8047b156bb 81 break;
rahul_dahiya 0:fb8047b156bb 82 }
rahul_dahiya 0:fb8047b156bb 83 }
rahul_dahiya 0:fb8047b156bb 84 unlock();
rahul_dahiya 0:fb8047b156bb 85
rahul_dahiya 0:fb8047b156bb 86 return ptr - (const char*)buffer;
rahul_dahiya 0:fb8047b156bb 87 }
rahul_dahiya 0:fb8047b156bb 88
rahul_dahiya 0:fb8047b156bb 89 ssize_t Stream::read(void* buffer, size_t length) {
rahul_dahiya 0:fb8047b156bb 90 char* ptr = (char*)buffer;
rahul_dahiya 0:fb8047b156bb 91 char* end = ptr + length;
rahul_dahiya 0:fb8047b156bb 92
rahul_dahiya 0:fb8047b156bb 93 lock();
rahul_dahiya 0:fb8047b156bb 94 while (ptr != end) {
rahul_dahiya 0:fb8047b156bb 95 int c = _getc();
rahul_dahiya 0:fb8047b156bb 96 if (c==EOF) break;
rahul_dahiya 0:fb8047b156bb 97 *ptr++ = c;
rahul_dahiya 0:fb8047b156bb 98 }
rahul_dahiya 0:fb8047b156bb 99 unlock();
rahul_dahiya 0:fb8047b156bb 100
rahul_dahiya 0:fb8047b156bb 101 return ptr - (const char*)buffer;
rahul_dahiya 0:fb8047b156bb 102 }
rahul_dahiya 0:fb8047b156bb 103
rahul_dahiya 0:fb8047b156bb 104 off_t Stream::seek(off_t offset, int whence) {
rahul_dahiya 0:fb8047b156bb 105 return 0;
rahul_dahiya 0:fb8047b156bb 106 }
rahul_dahiya 0:fb8047b156bb 107
rahul_dahiya 0:fb8047b156bb 108 off_t Stream::tell() {
rahul_dahiya 0:fb8047b156bb 109 return 0;
rahul_dahiya 0:fb8047b156bb 110 }
rahul_dahiya 0:fb8047b156bb 111
rahul_dahiya 0:fb8047b156bb 112 void Stream::rewind() {
rahul_dahiya 0:fb8047b156bb 113 }
rahul_dahiya 0:fb8047b156bb 114
rahul_dahiya 0:fb8047b156bb 115 int Stream::isatty() {
rahul_dahiya 0:fb8047b156bb 116 return 0;
rahul_dahiya 0:fb8047b156bb 117 }
rahul_dahiya 0:fb8047b156bb 118
rahul_dahiya 0:fb8047b156bb 119 int Stream::sync() {
rahul_dahiya 0:fb8047b156bb 120 return 0;
rahul_dahiya 0:fb8047b156bb 121 }
rahul_dahiya 0:fb8047b156bb 122
rahul_dahiya 0:fb8047b156bb 123 off_t Stream::size() {
rahul_dahiya 0:fb8047b156bb 124 return 0;
rahul_dahiya 0:fb8047b156bb 125 }
rahul_dahiya 0:fb8047b156bb 126
rahul_dahiya 0:fb8047b156bb 127 int Stream::printf(const char* format, ...) {
rahul_dahiya 0:fb8047b156bb 128 lock();
rahul_dahiya 0:fb8047b156bb 129 std::va_list arg;
rahul_dahiya 0:fb8047b156bb 130 va_start(arg, format);
rahul_dahiya 0:fb8047b156bb 131 fflush(_file);
rahul_dahiya 0:fb8047b156bb 132 int r = vfprintf(_file, format, arg);
rahul_dahiya 0:fb8047b156bb 133 va_end(arg);
rahul_dahiya 0:fb8047b156bb 134 unlock();
rahul_dahiya 0:fb8047b156bb 135 return r;
rahul_dahiya 0:fb8047b156bb 136 }
rahul_dahiya 0:fb8047b156bb 137
rahul_dahiya 0:fb8047b156bb 138 int Stream::scanf(const char* format, ...) {
rahul_dahiya 0:fb8047b156bb 139 lock();
rahul_dahiya 0:fb8047b156bb 140 std::va_list arg;
rahul_dahiya 0:fb8047b156bb 141 va_start(arg, format);
rahul_dahiya 0:fb8047b156bb 142 fflush(_file);
rahul_dahiya 0:fb8047b156bb 143 int r = vfscanf(_file, format, arg);
rahul_dahiya 0:fb8047b156bb 144 va_end(arg);
rahul_dahiya 0:fb8047b156bb 145 unlock();
rahul_dahiya 0:fb8047b156bb 146 return r;
rahul_dahiya 0:fb8047b156bb 147 }
rahul_dahiya 0:fb8047b156bb 148
rahul_dahiya 0:fb8047b156bb 149 int Stream::vprintf(const char* format, std::va_list args) {
rahul_dahiya 0:fb8047b156bb 150 lock();
rahul_dahiya 0:fb8047b156bb 151 fflush(_file);
rahul_dahiya 0:fb8047b156bb 152 int r = vfprintf(_file, format, args);
rahul_dahiya 0:fb8047b156bb 153 unlock();
rahul_dahiya 0:fb8047b156bb 154 return r;
rahul_dahiya 0:fb8047b156bb 155 }
rahul_dahiya 0:fb8047b156bb 156
rahul_dahiya 0:fb8047b156bb 157 int Stream::vscanf(const char* format, std::va_list args) {
rahul_dahiya 0:fb8047b156bb 158 lock();
rahul_dahiya 0:fb8047b156bb 159 fflush(_file);
rahul_dahiya 0:fb8047b156bb 160 int r = vfscanf(_file, format, args);
rahul_dahiya 0:fb8047b156bb 161 unlock();
rahul_dahiya 0:fb8047b156bb 162 return r;
rahul_dahiya 0:fb8047b156bb 163 }
rahul_dahiya 0:fb8047b156bb 164
rahul_dahiya 0:fb8047b156bb 165 } // namespace mbed