circuitpython/unix/input.c at stable · ProGamerCode/circuitpython · GitHub

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* This file is part of the MicroPython project, http://micropython.org/

* The MIT License (MIT)

* 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 <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <fcntl.h>

#include "py/mpstate.h"

#include "py/mphal.h"

#include "input.h"

#if MICROPY_USE_READLINE == 1

#include "lib/mp-readline/readline.h"

#endif

#if MICROPY_USE_READLINE == 0

char *prompt(char *p) {

// simple read string

static char buf[256];

fputs(p, stdout);

char *s = fgets(buf, sizeof(buf), stdin);

if (!s) {

return NULL;

}

int l = strlen(buf);

if (buf[l - 1] == '\n') {

buf[l - 1] = 0;

} else {

l++;

}

char *line = malloc(l);

memcpy(line, buf, l);

return line;

}

#endif

void prompt_read_history(void) {

#if MICROPY_USE_READLINE_HISTORY

#if MICROPY_USE_READLINE == 1

readline_init0(); // will clear history pointers

char *home = getenv("HOME");

if (home != NULL) {

vstr_t vstr;

vstr_init(&vstr, 50);

vstr_printf(&vstr, "%s/.micropython.history", home);

int fd = open(vstr_null_terminated_str(&vstr), O_RDONLY);

if (fd != -1) {

vstr_reset(&vstr);

for (;;) {

char c;

int sz = read(fd, &c, 1);

if (sz < 0) {

break;

}

if (sz == 0 || c == '\n') {

readline_push_history(vstr_null_terminated_str(&vstr));

if (sz == 0) {

break;

}

vstr_reset(&vstr);

} else {

vstr_add_byte(&vstr, c);

}

close(fd);

}

vstr_clear(&vstr);

}

#endif

}

void prompt_write_history(void) {

#if MICROPY_USE_READLINE_HISTORY

#if MICROPY_USE_READLINE == 1

char *home = getenv("HOME");

if (home != NULL) {

vstr_t vstr;

vstr_init(&vstr, 50);

vstr_printf(&vstr, "%s/.micropython.history", home);

int fd = open(vstr_null_terminated_str(&vstr), O_CREAT | O_TRUNC | O_WRONLY, 0644);

if (fd != -1) {

for (int i = MP_ARRAY_SIZE(MP_STATE_PORT(readline_hist)) - 1; i >= 0; i--) {

const char *line = MP_STATE_PORT(readline_hist)[i];

if (line != NULL) {

int res;

res = write(fd, line, strlen(line));

res = write(fd, "\n", 1);

(void)res;

}

close(fd);

}

#endif

}

circuitpython/unix/input.c at stable · ProGamerCode/circuitpython · GitHub

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