mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-10-01 01:26:06 -04:00
115 lines
2.3 KiB
C++
115 lines
2.3 KiB
C++
/*
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* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "string_format.hpp"
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static char* to_string_dec_uint_internal(
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char* p,
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uint32_t n
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) {
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*p = 0;
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auto q = p;
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do {
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const uint32_t d = n % 10;
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const char c = d + 48;
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*(--q) = c;
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n /= 10;
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} while( n != 0 );
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return q;
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}
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static char* to_string_dec_uint_pad_internal(
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char* const term,
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const uint32_t n,
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const int32_t l,
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const char fill
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) {
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auto q = to_string_dec_uint_internal(term, n);
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if( fill ) {
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while( (term - q) < l ) {
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*(--q) = fill;
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}
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}
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return q;
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}
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std::string to_string_dec_uint(
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const uint32_t n,
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const int32_t l,
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const char fill
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) {
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char p[16];
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auto term = p + sizeof(p) - 1;
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auto q = to_string_dec_uint_pad_internal(term, n, l, fill);
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// Right justify.
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while( (term - q) < l ) {
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*(--q) = ' ';
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}
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return q;
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}
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std::string to_string_dec_int(
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const int32_t n,
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const int32_t l,
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const char fill
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) {
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const size_t negative = (n < 0) ? 1 : 0;
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uint32_t n_abs = negative ? -n : n;
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char p[16];
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auto term = p + sizeof(p) - 1;
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auto q = to_string_dec_uint_pad_internal(term, n_abs, l - negative, fill);
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// Add sign.
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if( negative ) {
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*(--q) = '-';
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}
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// Right justify.
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while( (term - q) < l ) {
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*(--q) = ' ';
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}
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return q;
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}
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static void to_string_hex_internal(char* p, const uint32_t n, const int32_t l) {
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const uint32_t d = n & 0xf;
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p[l] = (d > 9) ? (d + 87) : (d + 48);
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if( l > 0 ) {
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to_string_hex_internal(p, n >> 4, l - 1);
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}
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}
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std::string to_string_hex(const uint32_t n, const int32_t l) {
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char p[16];
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to_string_hex_internal(p, n, l - 1);
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p[l] = 0;
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return p;
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}
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