04b9147e15
Blanket wide to all .c and .h files. Some files originating from ST are difficult to deal with (license wise) so it was left out of those. Also merged modpyb.h, modos.h, modstm.h and modtime.h in stmhal/.
333 lines
9.7 KiB
C
333 lines
9.7 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdint.h>
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#include <string.h>
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#include "misc.h"
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#include "mpconfig.h"
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#include "qstr.h"
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#include "obj.h"
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#include "mpz.h"
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#include "objint.h"
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#include "pfenv.h"
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#if MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_DOUBLE
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#include <stdio.h>
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#endif
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#if MICROPY_ENABLE_FLOAT
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#include "formatfloat.h"
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#endif
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static const char pad_spaces[] = " ";
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static const char pad_zeroes[] = "0000000000000000";
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void pfenv_vstr_add_strn(void *data, const char *str, unsigned int len){
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vstr_add_strn(data, str, len);
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}
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int pfenv_print_strn(const pfenv_t *pfenv, const char *str, unsigned int len, int flags, char fill, int width) {
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int left_pad = 0;
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int right_pad = 0;
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int pad = width - len;
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int pad_size;
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int total_chars_printed = 0;
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const char *pad_chars;
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if (!fill || fill == ' ' ) {
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pad_chars = pad_spaces;
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pad_size = sizeof(pad_spaces) - 1;
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} else if (fill == '0') {
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pad_chars = pad_zeroes;
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pad_size = sizeof(pad_zeroes) - 1;
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} else {
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// Other pad characters are fairly unusual, so we'll take the hit
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// and output them 1 at a time.
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pad_chars = &fill;
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pad_size = 1;
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}
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if (flags & PF_FLAG_CENTER_ADJUST) {
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left_pad = pad / 2;
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right_pad = pad - left_pad;
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} else if (flags & PF_FLAG_LEFT_ADJUST) {
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right_pad = pad;
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} else {
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left_pad = pad;
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}
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if (left_pad > 0) {
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total_chars_printed += left_pad;
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while (left_pad > 0) {
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int p = left_pad;
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if (p > pad_size) {
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p = pad_size;
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}
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pfenv->print_strn(pfenv->data, pad_chars, p);
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left_pad -= p;
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}
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}
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pfenv->print_strn(pfenv->data, str, len);
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total_chars_printed += len;
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if (right_pad > 0) {
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total_chars_printed += right_pad;
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while (right_pad > 0) {
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int p = right_pad;
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if (p > pad_size) {
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p = pad_size;
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}
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pfenv->print_strn(pfenv->data, pad_chars, p);
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right_pad -= p;
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}
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}
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return total_chars_printed;
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}
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// 32-bits is 10 digits, add 3 for commas, 1 for sign, 1 for terminating null
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// We can use 16 characters for 32-bit and 32 characters for 64-bit
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#define INT_BUF_SIZE (sizeof(machine_int_t) * 4)
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// This function is used by stmhal port to implement printf.
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// It needs to be a separate function to pfenv_print_mp_int, since converting to a mp_int looses the MSB.
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int pfenv_print_int(const pfenv_t *pfenv, machine_uint_t x, int sgn, int base, int base_char, int flags, char fill, int width) {
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char sign = 0;
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if (sgn) {
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if ((machine_int_t)x < 0) {
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sign = '-';
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x = -x;
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} else if (flags & PF_FLAG_SHOW_SIGN) {
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sign = '+';
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} else if (flags & PF_FLAG_SPACE_SIGN) {
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sign = ' ';
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}
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}
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char buf[INT_BUF_SIZE];
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char *b = buf + INT_BUF_SIZE;
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if (x == 0) {
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*(--b) = '0';
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} else {
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do {
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int c = x % base;
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x /= base;
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if (c >= 10) {
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c += base_char - 10;
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} else {
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c += '0';
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}
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*(--b) = c;
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} while (b > buf && x != 0);
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}
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char prefix_char = '\0';
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if (flags & PF_FLAG_SHOW_PREFIX) {
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if (base == 2) {
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prefix_char = base_char + 'b' - 'a';
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} else if (base == 8) {
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prefix_char = base_char + 'o' - 'a';
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} else if (base == 16) {
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prefix_char = base_char + 'x' - 'a';
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}
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}
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int len = 0;
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if (flags & PF_FLAG_PAD_AFTER_SIGN) {
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if (sign) {
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len += pfenv_print_strn(pfenv, &sign, 1, flags, fill, 1);
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width--;
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}
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if (prefix_char) {
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len += pfenv_print_strn(pfenv, "0", 1, flags, fill, 1);
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len += pfenv_print_strn(pfenv, &prefix_char, 1, flags, fill, 1);
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width -= 2;
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}
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} else {
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if (prefix_char && b > &buf[1]) {
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*(--b) = prefix_char;
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*(--b) = '0';
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}
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if (sign && b > buf) {
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*(--b) = sign;
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}
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}
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len += pfenv_print_strn(pfenv, b, buf + INT_BUF_SIZE - b, flags, fill, width);
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return len;
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}
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int pfenv_print_mp_int(const pfenv_t *pfenv, mp_obj_t x, int sgn, int base, int base_char, int flags, char fill, int width) {
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if (!MP_OBJ_IS_INT(x)) {
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// This will convert booleans to int, or raise an error for
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// non-integer types.
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x = MP_OBJ_NEW_SMALL_INT(mp_obj_get_int(x));
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}
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char prefix_buf[4];
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char *prefix = prefix_buf;
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if (mp_obj_int_is_positive(x)) {
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if (flags & PF_FLAG_SHOW_SIGN) {
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*prefix++ = '+';
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} else if (flags & PF_FLAG_SPACE_SIGN) {
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*prefix++ = ' ';
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}
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}
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if (flags & PF_FLAG_SHOW_PREFIX) {
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if (base == 2) {
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*prefix++ = '0';
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*prefix++ = base_char + 'b' - 'a';
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} else if (base == 8) {
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*prefix++ = '0';
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if (flags & PF_FLAG_SHOW_OCTAL_LETTER) {
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*prefix++ = base_char + 'o' - 'a';
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}
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} else if (base == 16) {
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*prefix++ = '0';
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*prefix++ = base_char + 'x' - 'a';
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}
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}
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*prefix = '\0';
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int prefix_len = prefix - prefix_buf;
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prefix = prefix_buf;
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char comma = '\0';
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if (flags & PF_FLAG_SHOW_COMMA) {
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comma = ',';
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}
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// The size of this buffer is rather arbitrary. If it's not large
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// enough, a dynamic one will be allocated.
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char stack_buf[sizeof(machine_int_t) * 4];
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char *buf = stack_buf;
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int buf_size = sizeof(stack_buf);
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int fmt_size = 0;
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char *str;
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char sign = '\0';
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if (flags & PF_FLAG_PAD_AFTER_SIGN) {
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// We add the pad in this function, so since the pad goes after
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// the sign & prefix, we format without a prefix
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str = mp_obj_int_formatted(&buf, &buf_size, &fmt_size,
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x, base, NULL, base_char, comma);
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if (*str == '-') {
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sign = *str++;
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fmt_size--;
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}
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} else {
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str = mp_obj_int_formatted(&buf, &buf_size, &fmt_size,
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x, base, prefix, base_char, comma);
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}
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int len = 0;
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if (flags & PF_FLAG_PAD_AFTER_SIGN) {
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// pad after sign implies pad after prefix as well.
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if (sign) {
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len += pfenv_print_strn(pfenv, &sign, 1, 0, 0, 1);
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width--;
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}
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if (prefix_len) {
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len += pfenv_print_strn(pfenv, prefix, prefix_len, 0, 0, 1);
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width -= prefix_len;
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}
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}
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len += pfenv_print_strn(pfenv, str, fmt_size, flags, fill, width);
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if (buf != stack_buf) {
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m_free(buf, buf_size);
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}
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return len;
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}
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#if MICROPY_ENABLE_FLOAT
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int pfenv_print_float(const pfenv_t *pfenv, mp_float_t f, char fmt, int flags, char fill, int width, int prec) {
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char buf[32];
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char sign = '\0';
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int chrs = 0;
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if (flags & PF_FLAG_SHOW_SIGN) {
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sign = '+';
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}
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else
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if (flags & PF_FLAG_SPACE_SIGN) {
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sign = ' ';
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}
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int len;
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#if MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_FLOAT
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len = format_float(f, buf, sizeof(buf), fmt, prec, sign);
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#elif MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_DOUBLE
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char fmt_buf[6];
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char *fmt_s = fmt_buf;
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*fmt_s++ = '%';
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if (sign) {
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*fmt_s++ = sign;
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}
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*fmt_s++ = '.';
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*fmt_s++ = '*';
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*fmt_s++ = fmt;
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*fmt_s = '\0';
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len = snprintf(buf, sizeof(buf), fmt_buf, prec, f);
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#else
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#error Unknown MICROPY FLOAT IMPL
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#endif
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char *s = buf;
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if ((flags & PF_FLAG_ADD_PERCENT) && (len + 1) < sizeof(buf)) {
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buf[len++] = '%';
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buf[len] = '\0';
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}
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// buf[0] < '0' returns true if the first character is space, + or -
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if ((flags & PF_FLAG_PAD_AFTER_SIGN) && buf[0] < '0') {
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// We have a sign character
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s++;
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if (*s <= '9' || (flags & PF_FLAG_PAD_NAN_INF)) {
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// We have a number, or we have a inf/nan and PAD_NAN_INF is set
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// With '{:06e}'.format(float('-inf')) you get '-00inf'
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chrs += pfenv_print_strn(pfenv, &buf[0], 1, 0, 0, 1);
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width--;
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len--;
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}
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}
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if (*s > 'A' && (flags & PF_FLAG_PAD_NAN_INF) == 0) {
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// We have one of the inf or nan variants, suppress zero fill.
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// With printf, if you use: printf("%06e", -inf) then you get " -inf"
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// so suppress the zero fill.
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fill = ' ';
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}
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chrs += pfenv_print_strn(pfenv, s, len, flags, fill, width);
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return chrs;
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}
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#endif
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