circuitpython/unix/input.c

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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 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 <stdio.h>
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#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "mpconfig.h"
#include "nlr.h"
#include "misc.h"
#include "qstr.h"
#include "obj.h"
#include "input.h"
#if MICROPY_USE_READLINE
#include <readline/readline.h>
#include <readline/history.h>
#endif
#define CTRL_D '\x04'
char *prompt(char *p) {
#if MICROPY_USE_READLINE
char *line = readline(p);
if (line) {
add_history(line);
}
#else
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);
#endif
return line;
}
STATIC mp_obj_t mp_builtin_input(uint n_args, const mp_obj_t *args) {
if (n_args == 1) {
mp_obj_print(args[0], PRINT_STR);
}
char *line = prompt("");
if (line == NULL) {
nlr_raise(mp_obj_new_exception(&mp_type_EOFError));
}
mp_obj_t o = mp_obj_new_str(line, strlen(line), false);
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free(line);
return o;
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_input_obj, 0, 1, mp_builtin_input);