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stdout_helpers.c
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66 lines (62 loc) · 2.36 KB
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2021 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <string.h>
// CIRCUITPY-CHANGE
#include <stdbool.h>
#include "py/mphal.h"
/*
* Extra stdout functions
* These can be either optimized for a particular port, or reference
* implementation below can be used.
*/
// CIRCUITPY-CHANGE: changes
// Note https://github.com/adafruit/circuitpython/pull/8614
// Send "cooked" string of given length, where every occurrence of
// LF character is replaced with CR LF ("\n" is converted to "\r\n").
// This is an optimised version to reduce the number of calls made
// to mp_hal_stdout_tx_strn.
void mp_hal_stdout_tx_strn_cooked(const char *str, size_t len) {
bool last_cr = false;
while (len > 0) {
size_t i = 0;
if (str[0] == '\n' && !last_cr) {
mp_hal_stdout_tx_strn("\r", 1);
i = 1;
}
// Lump all characters on the next line together.
while ((last_cr || str[i] != '\n') && i < len) {
last_cr = str[i] == '\r';
i++;
}
mp_hal_stdout_tx_strn(str, i);
str = &str[i];
len -= i;
}
}
// Send zero-terminated string
void mp_hal_stdout_tx_str(const char *str) {
mp_hal_stdout_tx_strn(str, strlen(str));
}