Ermanno Brusadin / mbed-src

mbed library sources

common/Stream.cpp@0:0a673c671a56, 2016-07-27 (annotated)

Committer:
ebrus
Date:
Wed Jul 27 18:35:32 2016 +0000
Revision:
0:0a673c671a56
4

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ebrus 0:0a673c671a56 1 /* mbed Microcontroller Library
ebrus 0:0a673c671a56 2 * Copyright (c) 2006-2013 ARM Limited
ebrus 0:0a673c671a56 3 *
ebrus 0:0a673c671a56 4 * Licensed under the Apache License, Version 2.0 (the "License");
ebrus 0:0a673c671a56 5 * you may not use this file except in compliance with the License.
ebrus 0:0a673c671a56 6 * You may obtain a copy of the License at
ebrus 0:0a673c671a56 7 *
ebrus 0:0a673c671a56 8 * http://www.apache.org/licenses/LICENSE-2.0
ebrus 0:0a673c671a56 9 *
ebrus 0:0a673c671a56 10 * Unless required by applicable law or agreed to in writing, software
ebrus 0:0a673c671a56 11 * distributed under the License is distributed on an "AS IS" BASIS,
ebrus 0:0a673c671a56 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ebrus 0:0a673c671a56 13 * See the License for the specific language governing permissions and
ebrus 0:0a673c671a56 14 * limitations under the License.
ebrus 0:0a673c671a56 15 */
ebrus 0:0a673c671a56 16 #include "Stream.h"
ebrus 0:0a673c671a56 17
ebrus 0:0a673c671a56 18 #include <cstdarg>
ebrus 0:0a673c671a56 19
ebrus 0:0a673c671a56 20 namespace mbed {
ebrus 0:0a673c671a56 21
ebrus 0:0a673c671a56 22 Stream::Stream(const char *name) : FileLike(name), _file(NULL) {
ebrus 0:0a673c671a56 23 /* open ourselves */
ebrus 0:0a673c671a56 24 char buf[12]; /* :0x12345678 + null byte */
ebrus 0:0a673c671a56 25 std::sprintf(buf, ":%p", this);
ebrus 0:0a673c671a56 26 _file = std::fopen(buf, "w+");
ebrus 0:0a673c671a56 27 setbuf(_file, NULL);
ebrus 0:0a673c671a56 28 }
ebrus 0:0a673c671a56 29
ebrus 0:0a673c671a56 30 Stream::~Stream() {
ebrus 0:0a673c671a56 31 fclose(_file);
ebrus 0:0a673c671a56 32 }
ebrus 0:0a673c671a56 33
ebrus 0:0a673c671a56 34 int Stream::putc(int c) {
ebrus 0:0a673c671a56 35 fflush(_file);
ebrus 0:0a673c671a56 36 return std::fputc(c, _file);
ebrus 0:0a673c671a56 37 }
ebrus 0:0a673c671a56 38 int Stream::puts(const char *s) {
ebrus 0:0a673c671a56 39 fflush(_file);
ebrus 0:0a673c671a56 40 return std::fputs(s, _file);
ebrus 0:0a673c671a56 41 }
ebrus 0:0a673c671a56 42 int Stream::getc() {
ebrus 0:0a673c671a56 43 fflush(_file);
ebrus 0:0a673c671a56 44 return std::fgetc(_file);
ebrus 0:0a673c671a56 45 }
ebrus 0:0a673c671a56 46 char* Stream::gets(char *s, int size) {
ebrus 0:0a673c671a56 47 fflush(_file);
ebrus 0:0a673c671a56 48 return std::fgets(s,size,_file);
ebrus 0:0a673c671a56 49 }
ebrus 0:0a673c671a56 50
ebrus 0:0a673c671a56 51 int Stream::close() {
ebrus 0:0a673c671a56 52 return 0;
ebrus 0:0a673c671a56 53 }
ebrus 0:0a673c671a56 54
ebrus 0:0a673c671a56 55 ssize_t Stream::write(const void* buffer, size_t length) {
ebrus 0:0a673c671a56 56 const char* ptr = (const char*)buffer;
ebrus 0:0a673c671a56 57 const char* end = ptr + length;
ebrus 0:0a673c671a56 58 while (ptr != end) {
ebrus 0:0a673c671a56 59 if (_putc(*ptr++) == EOF) {
ebrus 0:0a673c671a56 60 break;
ebrus 0:0a673c671a56 61 }
ebrus 0:0a673c671a56 62 }
ebrus 0:0a673c671a56 63 return ptr - (const char*)buffer;
ebrus 0:0a673c671a56 64 }
ebrus 0:0a673c671a56 65
ebrus 0:0a673c671a56 66 ssize_t Stream::read(void* buffer, size_t length) {
ebrus 0:0a673c671a56 67 char* ptr = (char*)buffer;
ebrus 0:0a673c671a56 68 char* end = ptr + length;
ebrus 0:0a673c671a56 69 while (ptr != end) {
ebrus 0:0a673c671a56 70 int c = _getc();
ebrus 0:0a673c671a56 71 if (c==EOF) break;
ebrus 0:0a673c671a56 72 *ptr++ = c;
ebrus 0:0a673c671a56 73 }
ebrus 0:0a673c671a56 74 return ptr - (const char*)buffer;
ebrus 0:0a673c671a56 75 }
ebrus 0:0a673c671a56 76
ebrus 0:0a673c671a56 77 off_t Stream::lseek(off_t offset, int whence) {
ebrus 0:0a673c671a56 78 return 0;
ebrus 0:0a673c671a56 79 }
ebrus 0:0a673c671a56 80
ebrus 0:0a673c671a56 81 int Stream::isatty() {
ebrus 0:0a673c671a56 82 return 0;
ebrus 0:0a673c671a56 83 }
ebrus 0:0a673c671a56 84
ebrus 0:0a673c671a56 85 int Stream::fsync() {
ebrus 0:0a673c671a56 86 return 0;
ebrus 0:0a673c671a56 87 }
ebrus 0:0a673c671a56 88
ebrus 0:0a673c671a56 89 off_t Stream::flen() {
ebrus 0:0a673c671a56 90 return 0;
ebrus 0:0a673c671a56 91 }
ebrus 0:0a673c671a56 92
ebrus 0:0a673c671a56 93 int Stream::printf(const char* format, ...) {
ebrus 0:0a673c671a56 94 std::va_list arg;
ebrus 0:0a673c671a56 95 va_start(arg, format);
ebrus 0:0a673c671a56 96 fflush(_file);
ebrus 0:0a673c671a56 97 int r = vfprintf(_file, format, arg);
ebrus 0:0a673c671a56 98 va_end(arg);
ebrus 0:0a673c671a56 99 return r;
ebrus 0:0a673c671a56 100 }
ebrus 0:0a673c671a56 101
ebrus 0:0a673c671a56 102 int Stream::scanf(const char* format, ...) {
ebrus 0:0a673c671a56 103 std::va_list arg;
ebrus 0:0a673c671a56 104 va_start(arg, format);
ebrus 0:0a673c671a56 105 fflush(_file);
ebrus 0:0a673c671a56 106 int r = vfscanf(_file, format, arg);
ebrus 0:0a673c671a56 107 va_end(arg);
ebrus 0:0a673c671a56 108 return r;
ebrus 0:0a673c671a56 109 }
ebrus 0:0a673c671a56 110
ebrus 0:0a673c671a56 111 } // namespace mbed