mirror of https://github.com/ArduPilot/ardupilot
156 lines
3.6 KiB
C++
156 lines
3.6 KiB
C++
/*
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* Copyright (C) Siddharth Bharat Purohit 2017
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* This file is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This file is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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wrappers for stdio functions
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Relies on linker wrap options
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Note that not all functions that have been wrapped are implemented
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here. The others are wrapped to ensure the function is not used
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without an implementation. If we need them then we can implement as
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needed.
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*/
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#include <string.h>
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#include <hal.h>
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#include <chprintf.h>
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#include <ctype.h>
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#include "hwdef/common/stdio.h"
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#include <AP_HAL/AP_HAL.h>
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#if HAL_USE_SERIAL_USB == TRUE
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#include <AP_HAL_ChibiOS/hwdef/common/usbcfg.h>
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#include "UARTDriver.h"
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#endif
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#ifndef HAL_BOOTLOADER_BUILD
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extern const AP_HAL::HAL& hal;
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#endif
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int __wrap_snprintf(char *str, size_t size, const char *fmt, ...)
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{
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va_list arg;
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int done;
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va_start (arg, fmt);
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#ifdef HAL_BOOTLOADER_BUILD
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done = chvsnprintf(str, size, fmt, arg);
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#else
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done = hal.util->vsnprintf(str, size, fmt, arg);
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#endif
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va_end (arg);
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return done;
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}
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int __wrap_vsnprintf(char *str, size_t size, const char *fmt, va_list ap)
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{
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#ifdef HAL_BOOTLOADER_BUILD
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return chvsnprintf(str, size, fmt, ap);
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#else
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return hal.util->vsnprintf(str, size, fmt, ap);
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#endif
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}
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int __wrap_vasprintf(char **strp, const char *fmt, va_list ap)
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{
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int len = vsnprintf(NULL, 0, fmt, ap);
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if (len <= 0) {
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return -1;
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}
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char *buf = (char*)calloc(len+1, 1);
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if (!buf) {
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return -1;
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}
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vsnprintf(buf, len+1, fmt, ap);
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(*strp) = buf;
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return len;
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}
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int __wrap_asprintf(char **strp, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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int ret = vasprintf(strp, fmt, ap);
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va_end(ap);
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return ret;
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}
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int __wrap_vprintf(const char *fmt, va_list arg)
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{
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#ifdef HAL_STDOUT_SERIAL
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return chvprintf((BaseSequentialStream*)&HAL_STDOUT_SERIAL, fmt, arg);
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#elif HAL_USE_SERIAL_USB == TRUE && !defined(HAL_BOOTLOADER_BUILD)
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usb_initialise();
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return chvprintf((BaseSequentialStream*)&SDU1, fmt, arg);
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#else
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(void)arg;
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return strlen(fmt);
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#endif
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}
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// hook to allow for printf() on systems without HAL_STDOUT_SERIAL
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int (*vprintf_console_hook)(const char *fmt, va_list arg) = vprintf;
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int __wrap_printf(const char *fmt, ...)
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{
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#ifndef HAL_NO_PRINTF
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va_list arg;
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int done;
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va_start (arg, fmt);
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done = vprintf_console_hook(fmt, arg);
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va_end (arg);
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return done;
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#else
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(void)fmt;
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return 0;
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#endif
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}
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/*
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we assume stdout or stderr. For output to files use the AP_Fileystem
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posix_compat headers
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*/
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int __wrap_fprintf(void *f, const char *fmt, ...)
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{
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#ifndef HAL_NO_PRINTF
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va_list arg;
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int done;
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va_start (arg, fmt);
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done = vprintf_console_hook(fmt, arg);
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va_end (arg);
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return done;
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#else
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(void)fmt;
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return 0;
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#endif
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}
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//just a stub for scanf
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int __wrap_scanf(const char *fmt, ...)
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{
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(void)fmt;
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return 0;
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}
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extern "C" {
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// empty function fiprintf(), saves flash space for unused code path
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int __wrap_fiprintf(const char *fmt, ...);
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int __wrap_fiprintf(const char *fmt, ...) { return -1; }
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}
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