Pedro Correia / mbed-dev

mbed library sources. Supersedes mbed-src.

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platform/Stream.cpp@186:707f6e361f3e, 2018-06-22 (annotated)

Committer:
Anna Bridge
Date:
Fri Jun 22 16:45:37 2018 +0100
Revision:
186:707f6e361f3e
Parent:
167:e84263d55307 
mbed-dev library. Release version 162

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 167:e84263d55307 1 /* mbed Microcontroller Library
AnnaBridge 167:e84263d55307 2 * Copyright (c) 2006-2013 ARM Limited
AnnaBridge 167:e84263d55307 3 *
AnnaBridge 167:e84263d55307 4 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 167:e84263d55307 5 * you may not use this file except in compliance with the License.
AnnaBridge 167:e84263d55307 6 * You may obtain a copy of the License at
AnnaBridge 167:e84263d55307 7 *
AnnaBridge 167:e84263d55307 8 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 167:e84263d55307 9 *
AnnaBridge 167:e84263d55307 10 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 167:e84263d55307 11 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 167:e84263d55307 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 167:e84263d55307 13 * See the License for the specific language governing permissions and
AnnaBridge 167:e84263d55307 14 * limitations under the License.
AnnaBridge 167:e84263d55307 15 */
AnnaBridge 167:e84263d55307 16 #include "platform/Stream.h"
AnnaBridge 167:e84263d55307 17 #include "platform/mbed_error.h"
AnnaBridge 167:e84263d55307 18 #include <errno.h>
AnnaBridge 167:e84263d55307 19
AnnaBridge 167:e84263d55307 20 namespace mbed {
AnnaBridge 167:e84263d55307 21
AnnaBridge 167:e84263d55307 22 Stream::Stream(const char *name) : FileLike(name), _file(NULL) {
AnnaBridge 167:e84263d55307 23 // No lock needed in constructor
AnnaBridge 167:e84263d55307 24 /* open ourselves */
AnnaBridge 167:e84263d55307 25 _file = fdopen(this, "w+");
AnnaBridge 167:e84263d55307 26 // fdopen() will make us buffered because Stream::isatty()
AnnaBridge 167:e84263d55307 27 // wrongly returns zero which is not being changed for
AnnaBridge 167:e84263d55307 28 // backward compatibility
AnnaBridge 167:e84263d55307 29 if (_file) {
AnnaBridge 167:e84263d55307 30 mbed_set_unbuffered_stream(_file);
AnnaBridge 167:e84263d55307 31 } else {
Anna Bridge 186:707f6e361f3e 32 MBED_ERROR1(MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_OPEN_FAILED), "Stream obj failure", _file);
AnnaBridge 167:e84263d55307 33 }
AnnaBridge 167:e84263d55307 34 }
AnnaBridge 167:e84263d55307 35
AnnaBridge 167:e84263d55307 36 Stream::~Stream() {
AnnaBridge 167:e84263d55307 37 // No lock can be used in destructor
AnnaBridge 167:e84263d55307 38 fclose(_file);
AnnaBridge 167:e84263d55307 39 }
AnnaBridge 167:e84263d55307 40
AnnaBridge 167:e84263d55307 41 int Stream::putc(int c) {
AnnaBridge 167:e84263d55307 42 lock();
AnnaBridge 167:e84263d55307 43 fflush(_file);
AnnaBridge 167:e84263d55307 44 int ret = std::fputc(c, _file);
AnnaBridge 167:e84263d55307 45 unlock();
AnnaBridge 167:e84263d55307 46 return ret;
AnnaBridge 167:e84263d55307 47 }
AnnaBridge 167:e84263d55307 48 int Stream::puts(const char *s) {
AnnaBridge 167:e84263d55307 49 lock();
AnnaBridge 167:e84263d55307 50 fflush(_file);
AnnaBridge 167:e84263d55307 51 int ret = std::fputs(s, _file);
AnnaBridge 167:e84263d55307 52 unlock();
AnnaBridge 167:e84263d55307 53 return ret;
AnnaBridge 167:e84263d55307 54 }
AnnaBridge 167:e84263d55307 55 int Stream::getc() {
AnnaBridge 167:e84263d55307 56 lock();
AnnaBridge 167:e84263d55307 57 fflush(_file);
AnnaBridge 167:e84263d55307 58 int ret = mbed_getc(_file);
AnnaBridge 167:e84263d55307 59 unlock();
AnnaBridge 167:e84263d55307 60 return ret;
AnnaBridge 167:e84263d55307 61 }
AnnaBridge 167:e84263d55307 62 char* Stream::gets(char *s, int size) {
AnnaBridge 167:e84263d55307 63 lock();
AnnaBridge 167:e84263d55307 64 fflush(_file);
AnnaBridge 167:e84263d55307 65 char *ret = mbed_gets(s,size,_file);
AnnaBridge 167:e84263d55307 66 unlock();
AnnaBridge 167:e84263d55307 67 return ret;
AnnaBridge 167:e84263d55307 68 }
AnnaBridge 167:e84263d55307 69
AnnaBridge 167:e84263d55307 70 int Stream::close() {
AnnaBridge 167:e84263d55307 71 return 0;
AnnaBridge 167:e84263d55307 72 }
AnnaBridge 167:e84263d55307 73
AnnaBridge 167:e84263d55307 74 ssize_t Stream::write(const void* buffer, size_t length) {
AnnaBridge 167:e84263d55307 75 const char* ptr = (const char*)buffer;
AnnaBridge 167:e84263d55307 76 const char* end = ptr + length;
AnnaBridge 167:e84263d55307 77
AnnaBridge 167:e84263d55307 78 lock();
AnnaBridge 167:e84263d55307 79 while (ptr != end) {
AnnaBridge 167:e84263d55307 80 if (_putc(*ptr++) == EOF) {
AnnaBridge 167:e84263d55307 81 break;
AnnaBridge 167:e84263d55307 82 }
AnnaBridge 167:e84263d55307 83 }
AnnaBridge 167:e84263d55307 84 unlock();
AnnaBridge 167:e84263d55307 85
AnnaBridge 167:e84263d55307 86 return ptr - (const char*)buffer;
AnnaBridge 167:e84263d55307 87 }
AnnaBridge 167:e84263d55307 88
AnnaBridge 167:e84263d55307 89 ssize_t Stream::read(void* buffer, size_t length) {
AnnaBridge 167:e84263d55307 90 char* ptr = (char*)buffer;
AnnaBridge 167:e84263d55307 91 char* end = ptr + length;
AnnaBridge 167:e84263d55307 92
AnnaBridge 167:e84263d55307 93 lock();
AnnaBridge 167:e84263d55307 94 while (ptr != end) {
AnnaBridge 167:e84263d55307 95 int c = _getc();
AnnaBridge 167:e84263d55307 96 if (c==EOF) break;
AnnaBridge 167:e84263d55307 97 *ptr++ = c;
AnnaBridge 167:e84263d55307 98 }
AnnaBridge 167:e84263d55307 99 unlock();
AnnaBridge 167:e84263d55307 100
AnnaBridge 167:e84263d55307 101 return ptr - (const char*)buffer;
AnnaBridge 167:e84263d55307 102 }
AnnaBridge 167:e84263d55307 103
AnnaBridge 167:e84263d55307 104 off_t Stream::seek(off_t offset, int whence) {
AnnaBridge 167:e84263d55307 105 return 0;
AnnaBridge 167:e84263d55307 106 }
AnnaBridge 167:e84263d55307 107
AnnaBridge 167:e84263d55307 108 off_t Stream::tell() {
AnnaBridge 167:e84263d55307 109 return 0;
AnnaBridge 167:e84263d55307 110 }
AnnaBridge 167:e84263d55307 111
AnnaBridge 167:e84263d55307 112 void Stream::rewind() {
AnnaBridge 167:e84263d55307 113 }
AnnaBridge 167:e84263d55307 114
AnnaBridge 167:e84263d55307 115 int Stream::isatty() {
AnnaBridge 167:e84263d55307 116 return 0;
AnnaBridge 167:e84263d55307 117 }
AnnaBridge 167:e84263d55307 118
AnnaBridge 167:e84263d55307 119 int Stream::sync() {
AnnaBridge 167:e84263d55307 120 return 0;
AnnaBridge 167:e84263d55307 121 }
AnnaBridge 167:e84263d55307 122
AnnaBridge 167:e84263d55307 123 off_t Stream::size() {
AnnaBridge 167:e84263d55307 124 return 0;
AnnaBridge 167:e84263d55307 125 }
AnnaBridge 167:e84263d55307 126
AnnaBridge 167:e84263d55307 127 int Stream::printf(const char* format, ...) {
AnnaBridge 167:e84263d55307 128 lock();
AnnaBridge 167:e84263d55307 129 std::va_list arg;
AnnaBridge 167:e84263d55307 130 va_start(arg, format);
AnnaBridge 167:e84263d55307 131 fflush(_file);
AnnaBridge 167:e84263d55307 132 int r = vfprintf(_file, format, arg);
AnnaBridge 167:e84263d55307 133 va_end(arg);
AnnaBridge 167:e84263d55307 134 unlock();
AnnaBridge 167:e84263d55307 135 return r;
AnnaBridge 167:e84263d55307 136 }
AnnaBridge 167:e84263d55307 137
AnnaBridge 167:e84263d55307 138 int Stream::scanf(const char* format, ...) {
AnnaBridge 167:e84263d55307 139 lock();
AnnaBridge 167:e84263d55307 140 std::va_list arg;
AnnaBridge 167:e84263d55307 141 va_start(arg, format);
AnnaBridge 167:e84263d55307 142 fflush(_file);
AnnaBridge 167:e84263d55307 143 int r = vfscanf(_file, format, arg);
AnnaBridge 167:e84263d55307 144 va_end(arg);
AnnaBridge 167:e84263d55307 145 unlock();
AnnaBridge 167:e84263d55307 146 return r;
AnnaBridge 167:e84263d55307 147 }
AnnaBridge 167:e84263d55307 148
AnnaBridge 167:e84263d55307 149 int Stream::vprintf(const char* format, std::va_list args) {
AnnaBridge 167:e84263d55307 150 lock();
AnnaBridge 167:e84263d55307 151 fflush(_file);
AnnaBridge 167:e84263d55307 152 int r = vfprintf(_file, format, args);
AnnaBridge 167:e84263d55307 153 unlock();
AnnaBridge 167:e84263d55307 154 return r;
AnnaBridge 167:e84263d55307 155 }
AnnaBridge 167:e84263d55307 156
AnnaBridge 167:e84263d55307 157 int Stream::vscanf(const char* format, std::va_list args) {
AnnaBridge 167:e84263d55307 158 lock();
AnnaBridge 167:e84263d55307 159 fflush(_file);
AnnaBridge 167:e84263d55307 160 int r = vfscanf(_file, format, args);
AnnaBridge 167:e84263d55307 161 unlock();
AnnaBridge 167:e84263d55307 162 return r;
AnnaBridge 167:e84263d55307 163 }
AnnaBridge 167:e84263d55307 164
AnnaBridge 167:e84263d55307 165 } // namespace mbed