This fork captures the mbed lib v125 for ease of integration into older projects.
Fork of mbed-dev by
Diff: common/Stream.cpp
- Revision:
- 144:ef7eb2e8f9f7
- Parent:
- 28:8e1f0b362990
--- a/common/Stream.cpp Tue Aug 02 14:07:36 2016 +0000 +++ b/common/Stream.cpp Fri Sep 02 15:07:44 2016 +0100 @@ -1,121 +1,151 @@ -/* 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 "Stream.h" - -namespace mbed { - -Stream::Stream(const char *name) : FileLike(name), _file(NULL) { - /* open ourselves */ - char buf[12]; /* :0x12345678 + null byte */ - std::sprintf(buf, ":%p", this); - _file = std::fopen(buf, "w+"); - mbed_set_unbuffered_stream(_file); -} - -Stream::~Stream() { - fclose(_file); -} - -int Stream::putc(int c) { - fflush(_file); - return std::fputc(c, _file); -} -int Stream::puts(const char *s) { - fflush(_file); - return std::fputs(s, _file); -} -int Stream::getc() { - fflush(_file); - return mbed_getc(_file); -} -char* Stream::gets(char *s, int size) { - fflush(_file); - return mbed_gets(s,size,_file); -} - -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; - while (ptr != end) { - if (_putc(*ptr++) == EOF) { - break; - } - } - return ptr - (const char*)buffer; -} - -ssize_t Stream::read(void* buffer, size_t length) { - char* ptr = (char*)buffer; - char* end = ptr + length; - while (ptr != end) { - int c = _getc(); - if (c==EOF) break; - *ptr++ = c; - } - return ptr - (const char*)buffer; -} - -off_t Stream::lseek(off_t offset, int whence) { - return 0; -} - -int Stream::isatty() { - return 0; -} - -int Stream::fsync() { - return 0; -} - -off_t Stream::flen() { - return 0; -} - -int Stream::printf(const char* format, ...) { - std::va_list arg; - va_start(arg, format); - fflush(_file); - int r = vfprintf(_file, format, arg); - va_end(arg); - return r; -} - -int Stream::scanf(const char* format, ...) { - std::va_list arg; - va_start(arg, format); - fflush(_file); - int r = vfscanf(_file, format, arg); - va_end(arg); - return r; -} - -int Stream::vprintf(const char* format, std::va_list args) { - fflush(_file); - int r = vfprintf(_file, format, args); - return r; -} - -int Stream::vscanf(const char* format, std::va_list args) { - fflush(_file); - int r = vfscanf(_file, format, args); - return r; -} - -} // namespace mbed +/* 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 "Stream.h" + +namespace mbed { + +Stream::Stream(const char *name) : FileLike(name), _file(NULL) { + // No lock needed in constructor + /* open ourselves */ + char buf[12]; /* :0x12345678 + null byte */ + std::sprintf(buf, ":%p", this); + _file = std::fopen(buf, "w+"); + mbed_set_unbuffered_stream(_file); +} + +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::lseek(off_t offset, int whence) { + return 0; +} + +int Stream::isatty() { + return 0; +} + +int Stream::fsync() { + return 0; +} + +off_t Stream::flen() { + 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