From Ben Katz mbed-dev library. Removed unnecessary target files to reduce the overall size by a factor of 10 to make it easier to import into the online IDE.
Dependents: motor_driver motor_driver_screaming_fix
Diff: platform/Stream.cpp
- Revision:
- 0:083111ae2a11
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/platform/Stream.cpp Thu Nov 26 04:08:56 2020 +0000 @@ -0,0 +1,165 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "platform/Stream.h" +#include "platform/mbed_error.h" +#include <errno.h> + +namespace mbed { + +Stream::Stream(const char *name) : FileLike(name), _file(NULL) { + // No lock needed in constructor + /* open ourselves */ + _file = fdopen(this, "w+"); + // fdopen() will make us buffered because Stream::isatty() + // wrongly returns zero which is not being changed for + // backward compatibility + if (_file) { + mbed_set_unbuffered_stream(_file); + } else { + error("Stream obj failure, errno=%d\r\n", errno); + } +} + +Stream::~Stream() { + // No lock can be used in destructor + fclose(_file); +} + +int Stream::putc(int c) { + lock(); + fflush(_file); + int ret = std::fputc(c, _file); + unlock(); + return ret; +} +int Stream::puts(const char *s) { + lock(); + fflush(_file); + int ret = std::fputs(s, _file); + unlock(); + return ret; +} +int Stream::getc() { + lock(); + fflush(_file); + int ret = mbed_getc(_file); + unlock(); + return ret; +} +char* Stream::gets(char *s, int size) { + lock(); + fflush(_file); + char *ret = mbed_gets(s,size,_file); + unlock(); + return ret; +} + +int Stream::close() { + return 0; +} + +ssize_t Stream::write(const void* buffer, size_t length) { + const char* ptr = (const char*)buffer; + const char* end = ptr + length; + + lock(); + while (ptr != end) { + if (_putc(*ptr++) == EOF) { + break; + } + } + unlock(); + + return ptr - (const char*)buffer; +} + +ssize_t Stream::read(void* buffer, size_t length) { + char* ptr = (char*)buffer; + char* end = ptr + length; + + lock(); + while (ptr != end) { + int c = _getc(); + if (c==EOF) break; + *ptr++ = c; + } + unlock(); + + return ptr - (const char*)buffer; +} + +off_t Stream::seek(off_t offset, int whence) { + return 0; +} + +off_t Stream::tell() { + return 0; +} + +void Stream::rewind() { +} + +int Stream::isatty() { + return 0; +} + +int Stream::sync() { + return 0; +} + +off_t Stream::size() { + return 0; +} + +int Stream::printf(const char* format, ...) { + lock(); + std::va_list arg; + va_start(arg, format); + fflush(_file); + int r = vfprintf(_file, format, arg); + va_end(arg); + unlock(); + return r; +} + +int Stream::scanf(const char* format, ...) { + lock(); + std::va_list arg; + va_start(arg, format); + fflush(_file); + int r = vfscanf(_file, format, arg); + va_end(arg); + unlock(); + return r; +} + +int Stream::vprintf(const char* format, std::va_list args) { + lock(); + fflush(_file); + int r = vfprintf(_file, format, args); + unlock(); + return r; +} + +int Stream::vscanf(const char* format, std::va_list args) { + lock(); + fflush(_file); + int r = vfscanf(_file, format, args); + unlock(); + return r; +} + +} // namespace mbed