printf implementation from vita3k (not yet adapted)
This commit is contained in:
georgemoralis
parent
825d38ef31
commit
b9c6d9d395
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///////////////////////////////////////////////////////////////////////////////
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// \author (c) Marco Paland (info@paland.com)
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// 2014-2018, PALANDesign Hannover, Germany
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//
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// \license The MIT License (MIT)
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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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// \brief Tiny printf, sprintf and snprintf implementation, optimized for speed on
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// embedded systems with a very limited resources.
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// Use this instead of bloated standard/newlib printf.
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// These routines are thread safe and reentrant!
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//
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///////////////////////////////////////////////////////////////////////////////
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// Vita3K emulator project
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// Copyright (C) 2023 Vita3K team
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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 of the License, or
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// (at your option) 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 along
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// with this program; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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//copied from Vita3k project at 6/10/2023 (latest update 30/06/2023)
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//modifications for adapting va_args parameters
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#pragma once
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#include <cstdarg>
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#include <cstddef>
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#include <cstdbool>
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#include <cstdint>
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namespace utils {
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// ntoa conversion buffer size, this must be big enough to hold
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// one converted numeric number including padded zeros (dynamically created on stack)
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// 32 byte is a good default
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#define PRINTF_NTOA_BUFFER_SIZE 32U
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// ftoa conversion buffer size, this must be big enough to hold
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// one converted float number including padded zeros (dynamically created on stack)
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// 32 byte is a good default
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#define PRINTF_FTOA_BUFFER_SIZE 32U
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// define this to support floating point (%f)
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#define PRINTF_SUPPORT_FLOAT
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// define this to support long long types (%llu or %p)
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#define PRINTF_SUPPORT_LONG_LONG
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// define this to support the ptrdiff_t type (%t)
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// ptrdiff_t is normally defined in <stddef.h> as long or long long type
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#define PRINTF_SUPPORT_PTRDIFF_T
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///////////////////////////////////////////////////////////////////////////////
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// internal flag definitions
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#define FLAGS_ZEROPAD (1U << 0U)
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#define FLAGS_LEFT (1U << 1U)
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#define FLAGS_PLUS (1U << 2U)
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#define FLAGS_SPACE (1U << 3U)
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#define FLAGS_HASH (1U << 4U)
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#define FLAGS_UPPERCASE (1U << 5U)
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#define FLAGS_CHAR (1U << 6U)
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#define FLAGS_SHORT (1U << 7U)
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#define FLAGS_LONG (1U << 8U)
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#define FLAGS_LONG_LONG (1U << 9U)
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#define FLAGS_PRECISION (1U << 10U)
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#define FLAGS_WIDTH (1U << 11U)
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// output function type
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typedef void (*out_fct_type)(char character, void* buffer, size_t idx, size_t maxlen);
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// wrapper (used as buffer) for output function type
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typedef struct {
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void (*fct)(char character, void* arg);
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void* arg;
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} out_fct_wrap_type;
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// internal buffer output
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static inline void _out_buffer(char character, void* buffer, size_t idx, size_t maxlen)
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{
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if (idx < maxlen) {
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((char*)buffer)[idx] = character;
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}
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}
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// internal null output
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static inline void _out_null(char character, void* buffer, size_t idx, size_t maxlen)
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{
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(void)character; (void)buffer; (void)idx; (void)maxlen;
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}
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// internal output function wrapper
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static inline void _out_fct(char character, void* buffer, size_t idx, size_t maxlen)
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{
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(void)idx; (void)maxlen;
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// buffer is the output fct pointer
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((out_fct_wrap_type*)buffer)->fct(character, ((out_fct_wrap_type*)buffer)->arg);
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}
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// internal strlen
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// \return The length of the string (excluding the terminating 0)
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static inline unsigned int _strlen(const char* str)
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{
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const char* s;
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for (s = str; *s; ++s);
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return (unsigned int)(s - str);
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}
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// internal test if char is a digit (0-9)
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// \return true if char is a digit
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static inline bool _is_digit(char ch)
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{
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return (ch >= '0') && (ch <= '9');
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}
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// internal ASCII string to unsigned int conversion
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static inline unsigned int _atoi(const char** str)
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{
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unsigned int i = 0U;
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while (_is_digit(**str)) {
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i = i * 10U + (unsigned int)(*((*str)++) - '0');
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}
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return i;
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}
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// internal itoa format
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static inline size_t _ntoa_format(out_fct_type out, char* buffer, size_t idx, size_t maxlen, char* buf, size_t len, bool negative, unsigned int base, unsigned int prec, unsigned int width, unsigned int flags)
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{
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const size_t start_idx = idx;
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// pad leading zeros
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while (!(flags & FLAGS_LEFT) && (len < prec) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
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buf[len++] = '0';
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}
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while (!(flags & FLAGS_LEFT) && (flags & FLAGS_ZEROPAD) && (len < width) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
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buf[len++] = '0';
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}
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// handle hash
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if (flags & FLAGS_HASH) {
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if (((len == prec) || (len == width)) && (len > 0U)) {
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len--;
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if ((base == 16U) && (len > 0U)) {
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len--;
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}
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}
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if ((base == 16U) && !(flags & FLAGS_UPPERCASE) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
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buf[len++] = 'x';
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}
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if ((base == 16U) && (flags & FLAGS_UPPERCASE) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
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buf[len++] = 'X';
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}
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if (len < PRINTF_NTOA_BUFFER_SIZE) {
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buf[len++] = '0';
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}
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}
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// handle sign
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if ((len == width) && (negative || (flags & FLAGS_PLUS) || (flags & FLAGS_SPACE))) {
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len--;
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}
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if (len < PRINTF_NTOA_BUFFER_SIZE) {
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if (negative) {
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buf[len++] = '-';
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}
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else if (flags & FLAGS_PLUS) {
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buf[len++] = '+'; // ignore the space if the '+' exists
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}
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else if (flags & FLAGS_SPACE) {
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buf[len++] = ' ';
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}
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}
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// pad spaces up to given width
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if (!(flags & FLAGS_LEFT) && !(flags & FLAGS_ZEROPAD)) {
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for (size_t i = len; i < width; i++) {
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out(' ', buffer, idx++, maxlen);
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}
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}
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// reverse string
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for (size_t i = 0U; i < len; i++) {
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out(buf[len - i - 1U], buffer, idx++, maxlen);
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}
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// append pad spaces up to given width
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if (flags & FLAGS_LEFT) {
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while (idx - start_idx < width) {
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out(' ', buffer, idx++, maxlen);
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}
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}
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return idx;
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}
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// internal itoa for 'long' type
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static inline size_t _ntoa_long(out_fct_type out, char* buffer, size_t idx, size_t maxlen, unsigned long value, bool negative, unsigned long base, unsigned int prec, unsigned int width, unsigned int flags)
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{
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char buf[PRINTF_NTOA_BUFFER_SIZE];
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size_t len = 0U;
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// write if precision != 0 and value is != 0
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if (!(flags & FLAGS_PRECISION) || value) {
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do {
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const char digit = (char)(value % base);
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buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10;
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value /= base;
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} while (value && (len < PRINTF_NTOA_BUFFER_SIZE));
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}
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return _ntoa_format(out, buffer, idx, maxlen, buf, len, negative, (unsigned int)base, prec, width, flags);
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}
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// internal itoa for 'long long' type
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#if defined(PRINTF_SUPPORT_LONG_LONG)
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static inline size_t _ntoa_long_long(out_fct_type out, char* buffer, size_t idx, size_t maxlen, unsigned long long value, bool negative, unsigned long long base, unsigned int prec, unsigned int width, unsigned int flags)
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{
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char buf[PRINTF_NTOA_BUFFER_SIZE];
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size_t len = 0U;
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// write if precision != 0 and value is != 0
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if (!(flags & FLAGS_PRECISION) || value) {
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do {
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const char digit = (char)(value % base);
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buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10;
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value /= base;
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} while (value && (len < PRINTF_NTOA_BUFFER_SIZE));
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}
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return _ntoa_format(out, buffer, idx, maxlen, buf, len, negative, (unsigned int)base, prec, width, flags);
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}
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#endif // PRINTF_SUPPORT_LONG_LONG
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#if defined(PRINTF_SUPPORT_FLOAT)
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static inline size_t _ftoa(out_fct_type out, char* buffer, size_t idx, size_t maxlen, double value, unsigned int prec, unsigned int width, unsigned int flags)
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{
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char buf[PRINTF_FTOA_BUFFER_SIZE];
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size_t len = 0U;
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double diff = 0.0;
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// if input is larger than thres_max, revert to exponential
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const double thres_max = (double)0x7FFFFFFF;
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// powers of 10
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static const double pow10[] = { 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000 };
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// test for negative
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bool negative = false;
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if (value < 0) {
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negative = true;
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value = 0 - value;
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}
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// set default precision to 6, if not set explicitly
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if (!(flags & FLAGS_PRECISION)) {
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prec = 6U;
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}
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// limit precision to 9, cause a prec >= 10 can lead to overflow errors
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while ((len < PRINTF_FTOA_BUFFER_SIZE) && (prec > 9U)) {
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buf[len++] = '0';
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prec--;
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}
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int whole = (int)value;
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double tmp = (value - whole) * pow10[prec];
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unsigned long frac = (unsigned long)tmp;
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diff = tmp - frac;
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if (diff > 0.5) {
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++frac;
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// handle rollover, e.g. case 0.99 with prec 1 is 1.0
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if (frac >= pow10[prec]) {
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frac = 0;
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++whole;
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}
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}
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else if ((diff == 0.5) && ((frac == 0U) || (frac & 1U))) {
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// if halfway, round up if odd, OR if last digit is 0
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++frac;
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}
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// TBD: for very large numbers switch back to native sprintf for exponentials. Anyone want to write code to replace this?
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// Normal printf behavior is to print EVERY whole number digit which can be 100s of characters overflowing your buffers == bad
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if (value > thres_max) {
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return 0U;
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}
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if (prec == 0U) {
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diff = value - (double)whole;
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if (diff > 0.5) {
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// greater than 0.5, round up, e.g. 1.6 -> 2
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++whole;
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}
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else if ((diff == 0.5) && (whole & 1)) {
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// exactly 0.5 and ODD, then round up
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// 1.5 -> 2, but 2.5 -> 2
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++whole;
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}
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}
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else {
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unsigned int count = prec;
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// now do fractional part, as an unsigned number
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while (len < PRINTF_FTOA_BUFFER_SIZE) {
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--count;
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buf[len++] = (char)(48U + (frac % 10U));
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if (!(frac /= 10U)) {
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break;
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}
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}
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// add extra 0s
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while ((len < PRINTF_FTOA_BUFFER_SIZE) && (count-- > 0U)) {
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buf[len++] = '0';
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}
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if (len < PRINTF_FTOA_BUFFER_SIZE) {
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// add decimal
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buf[len++] = '.';
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}
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}
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// do whole part, number is reversed
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while (len < PRINTF_FTOA_BUFFER_SIZE) {
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buf[len++] = (char)(48 + (whole % 10));
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if (!(whole /= 10)) {
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break;
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}
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}
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// pad leading zeros
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while (!(flags & FLAGS_LEFT) && (flags & FLAGS_ZEROPAD) && (len < width) && (len < PRINTF_FTOA_BUFFER_SIZE)) {
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buf[len++] = '0';
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}
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// handle sign
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if ((len == width) && (negative || (flags & FLAGS_PLUS) || (flags & FLAGS_SPACE))) {
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len--;
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}
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if (len < PRINTF_FTOA_BUFFER_SIZE) {
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if (negative) {
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buf[len++] = '-';
|
||||||
|
}
|
||||||
|
else if (flags & FLAGS_PLUS) {
|
||||||
|
buf[len++] = '+'; // ignore the space if the '+' exists
|
||||||
|
}
|
||||||
|
else if (flags & FLAGS_SPACE) {
|
||||||
|
buf[len++] = ' ';
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// pad spaces up to given width
|
||||||
|
if (!(flags & FLAGS_LEFT) && !(flags & FLAGS_ZEROPAD)) {
|
||||||
|
for (size_t i = len; i < width; i++) {
|
||||||
|
out(' ', buffer, idx++, maxlen);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// reverse string
|
||||||
|
for (size_t i = 0U; i < len; i++) {
|
||||||
|
out(buf[len - i - 1U], buffer, idx++, maxlen);
|
||||||
|
}
|
||||||
|
|
||||||
|
// append pad spaces up to given width
|
||||||
|
if (flags & FLAGS_LEFT) {
|
||||||
|
while (idx < width) {
|
||||||
|
out(' ', buffer, idx++, maxlen);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return idx;
|
||||||
|
}
|
||||||
|
#endif // PRINTF_SUPPORT_FLOAT
|
||||||
|
|
||||||
|
#if 0
|
||||||
|
// internal vsnprintf
|
||||||
|
static inline int _vsnprintf(out_fct_type out, char* buffer, const size_t maxlen, const char* format, CPUState &cpu, MemState &mem, module::vargs &va)
|
||||||
|
{
|
||||||
|
unsigned int flags, width, precision, n;
|
||||||
|
size_t idx = 0U;
|
||||||
|
|
||||||
|
if (!buffer) {
|
||||||
|
// use null output function
|
||||||
|
out = _out_null;
|
||||||
|
}
|
||||||
|
|
||||||
|
while (*format)
|
||||||
|
{
|
||||||
|
// format specifier? %[flags][width][.precision][length]
|
||||||
|
if (*format != '%') {
|
||||||
|
// no
|
||||||
|
out(*format, buffer, idx++, maxlen);
|
||||||
|
format++;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
// yes, evaluate it
|
||||||
|
format++;
|
||||||
|
}
|
||||||
|
|
||||||
|
// evaluate flags
|
||||||
|
flags = 0U;
|
||||||
|
do {
|
||||||
|
switch (*format) {
|
||||||
|
case '0': flags |= FLAGS_ZEROPAD; format++; n = 1U; break;
|
||||||
|
case '-': flags |= FLAGS_LEFT; format++; n = 1U; break;
|
||||||
|
case '+': flags |= FLAGS_PLUS; format++; n = 1U; break;
|
||||||
|
case ' ': flags |= FLAGS_SPACE; format++; n = 1U; break;
|
||||||
|
case '#': flags |= FLAGS_HASH; format++; n = 1U; break;
|
||||||
|
default : n = 0U; break;
|
||||||
|
}
|
||||||
|
} while (n);
|
||||||
|
|
||||||
|
// evaluate width field
|
||||||
|
width = 0U;
|
||||||
|
if (_is_digit(*format)) {
|
||||||
|
width = _atoi(&format);
|
||||||
|
}
|
||||||
|
else if (*format == '*') {
|
||||||
|
const int w = va.next<int>(cpu, mem);
|
||||||
|
if (w < 0) {
|
||||||
|
flags |= FLAGS_LEFT; // reverse padding
|
||||||
|
width = (unsigned int)-w;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
width = (unsigned int)w;
|
||||||
|
}
|
||||||
|
format++;
|
||||||
|
}
|
||||||
|
|
||||||
|
// evaluate precision field
|
||||||
|
precision = 0U;
|
||||||
|
if (*format == '.') {
|
||||||
|
flags |= FLAGS_PRECISION;
|
||||||
|
format++;
|
||||||
|
if (_is_digit(*format)) {
|
||||||
|
precision = _atoi(&format);
|
||||||
|
}
|
||||||
|
else if (*format == '*') {
|
||||||
|
precision = (unsigned int)va.next<int>(cpu, mem);
|
||||||
|
format++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// evaluate length field
|
||||||
|
switch (*format) {
|
||||||
|
case 'l' :
|
||||||
|
flags |= FLAGS_LONG;
|
||||||
|
format++;
|
||||||
|
if (*format == 'l') {
|
||||||
|
flags |= FLAGS_LONG_LONG;
|
||||||
|
format++;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case 'h' :
|
||||||
|
flags |= FLAGS_SHORT;
|
||||||
|
format++;
|
||||||
|
if (*format == 'h') {
|
||||||
|
flags |= FLAGS_CHAR;
|
||||||
|
format++;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
#if defined(PRINTF_SUPPORT_PTRDIFF_T)
|
||||||
|
case 't' :
|
||||||
|
flags |= (sizeof(ptrdiff_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
|
||||||
|
format++;
|
||||||
|
break;
|
||||||
|
#endif
|
||||||
|
case 'j' :
|
||||||
|
flags |= (sizeof(intmax_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
|
||||||
|
format++;
|
||||||
|
break;
|
||||||
|
case 'z' :
|
||||||
|
flags |= (sizeof(size_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
|
||||||
|
format++;
|
||||||
|
break;
|
||||||
|
default :
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
// evaluate specifier
|
||||||
|
switch (*format) {
|
||||||
|
case 'd' :
|
||||||
|
case 'i' :
|
||||||
|
case 'u' :
|
||||||
|
case 'x' :
|
||||||
|
case 'X' :
|
||||||
|
case 'o' :
|
||||||
|
case 'b' : {
|
||||||
|
// set the base
|
||||||
|
unsigned int base;
|
||||||
|
if (*format == 'x' || *format == 'X') {
|
||||||
|
base = 16U;
|
||||||
|
}
|
||||||
|
else if (*format == 'o') {
|
||||||
|
base = 8U;
|
||||||
|
}
|
||||||
|
else if (*format == 'b') {
|
||||||
|
base = 2U;
|
||||||
|
flags &= ~FLAGS_HASH; // no hash for bin format
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
base = 10U;
|
||||||
|
flags &= ~FLAGS_HASH; // no hash for dec format
|
||||||
|
}
|
||||||
|
// uppercase
|
||||||
|
if (*format == 'X') {
|
||||||
|
flags |= FLAGS_UPPERCASE;
|
||||||
|
}
|
||||||
|
|
||||||
|
// no plus or space flag for u, x, X, o, b
|
||||||
|
if ((*format != 'i') && (*format != 'd')) {
|
||||||
|
flags &= ~(FLAGS_PLUS | FLAGS_SPACE);
|
||||||
|
}
|
||||||
|
|
||||||
|
// convert the integer
|
||||||
|
if ((*format == 'i') || (*format == 'd')) {
|
||||||
|
// signed
|
||||||
|
if (flags & FLAGS_LONG_LONG) {
|
||||||
|
#if defined(PRINTF_SUPPORT_LONG_LONG)
|
||||||
|
const long long value = va.next<long long>(cpu, mem);
|
||||||
|
idx = _ntoa_long_long(out, buffer, idx, maxlen, (unsigned long long)(value > 0 ? value : 0 - value), value < 0, base, precision, width, flags);
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
else if (flags & FLAGS_LONG) {
|
||||||
|
const long value = va.next<long>(cpu, mem);
|
||||||
|
idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned long)(value > 0 ? value : 0 - value), value < 0, base, precision, width, flags);
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
const int value = (flags & FLAGS_CHAR) ? (char)va.next<int>(cpu, mem) : (flags & FLAGS_SHORT) ? (short int)va.next<int>(cpu, mem): va.next<int>(cpu, mem);
|
||||||
|
idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned int)(value > 0 ? value : 0 - value), value < 0, base, precision, width, flags);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
// unsigned
|
||||||
|
if (flags & FLAGS_LONG_LONG) {
|
||||||
|
#if defined(PRINTF_SUPPORT_LONG_LONG)
|
||||||
|
idx = _ntoa_long_long(out, buffer, idx, maxlen, va.next<unsigned long long>(cpu, mem), false, base, precision, width, flags);
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
else if (flags & FLAGS_LONG) {
|
||||||
|
idx = _ntoa_long(out, buffer, idx, maxlen, va.next<unsigned long>(cpu, mem), false, base, precision, width, flags);
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
const unsigned int value = (flags & FLAGS_CHAR) ? (unsigned char)va.next<unsigned int>(cpu, mem) : (flags & FLAGS_SHORT) ?
|
||||||
|
(unsigned short int)va.next<unsigned int>(cpu, mem) : va.next<unsigned int>(cpu, mem);
|
||||||
|
idx = _ntoa_long(out, buffer, idx, maxlen, value, false, base, precision, width, flags);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
format++;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
#if defined(PRINTF_SUPPORT_FLOAT)
|
||||||
|
case 'f' :
|
||||||
|
case 'F' :
|
||||||
|
idx = _ftoa(out, buffer, idx, maxlen, va.next<double>(cpu, mem), precision, width, flags);
|
||||||
|
format++;
|
||||||
|
break;
|
||||||
|
#endif // PRINTF_SUPPORT_FLOAT
|
||||||
|
case 'c' : {
|
||||||
|
unsigned int l = 1U;
|
||||||
|
// pre padding
|
||||||
|
if (!(flags & FLAGS_LEFT)) {
|
||||||
|
while (l++ < width) {
|
||||||
|
out(' ', buffer, idx++, maxlen);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
// char output
|
||||||
|
out((char)va.next<int>(cpu, mem), buffer, idx++, maxlen);
|
||||||
|
// post padding
|
||||||
|
if (flags & FLAGS_LEFT) {
|
||||||
|
while (l++ < width) {
|
||||||
|
out(' ', buffer, idx++, maxlen);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
format++;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
case 's' : {
|
||||||
|
const char *p = va.next<Ptr<char>>(cpu, mem).get(mem);
|
||||||
|
p = p != nullptr ? p : "(null)";
|
||||||
|
unsigned int l = _strlen(p);
|
||||||
|
// pre padding
|
||||||
|
if (flags & FLAGS_PRECISION) {
|
||||||
|
l = (l < precision ? l : precision);
|
||||||
|
}
|
||||||
|
if (!(flags & FLAGS_LEFT)) {
|
||||||
|
while (l++ < width) {
|
||||||
|
out(' ', buffer, idx++, maxlen);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
// string output
|
||||||
|
while ((*p != 0) && (!(flags & FLAGS_PRECISION) || precision--)) {
|
||||||
|
out(*(p++), buffer, idx++, maxlen);
|
||||||
|
}
|
||||||
|
// post padding
|
||||||
|
if (flags & FLAGS_LEFT) {
|
||||||
|
while (l++ < width) {
|
||||||
|
out(' ', buffer, idx++, maxlen);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
format++;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
case 'p' : {
|
||||||
|
width = sizeof(void*) * 2U;
|
||||||
|
flags |= FLAGS_ZEROPAD | FLAGS_UPPERCASE;
|
||||||
|
#if defined(PRINTF_SUPPORT_LONG_LONG)
|
||||||
|
const bool is_ll = sizeof(uintptr_t) == sizeof(long long);
|
||||||
|
if (is_ll) {
|
||||||
|
idx = _ntoa_long_long(out, buffer, idx, maxlen, (uintptr_t)va.next<Ptr<void>>(cpu, mem).address(), false, 16U, precision, width, flags);
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
#endif
|
||||||
|
idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned long)((uintptr_t)va.next<Ptr<void>>(cpu, mem).address()), false, 16U, precision, width, flags);
|
||||||
|
#if defined(PRINTF_SUPPORT_LONG_LONG)
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
format++;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
case '%' :
|
||||||
|
out('%', buffer, idx++, maxlen);
|
||||||
|
format++;
|
||||||
|
break;
|
||||||
|
|
||||||
|
default :
|
||||||
|
out(*format, buffer, idx++, maxlen);
|
||||||
|
format++;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// termination
|
||||||
|
out((char)0, buffer, idx < maxlen ? idx : maxlen - 1U, maxlen);
|
||||||
|
|
||||||
|
// return written chars without terminating \0
|
||||||
|
return (int)idx;
|
||||||
|
}
|
||||||
|
|
||||||
|
///////////////////////////////////////////////////////
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Tiny sprintf implementation
|
||||||
|
* Due to security reasons (buffer overflow) YOU SHOULD CONSIDER USING (V)SNPRINTF INSTEAD!
|
||||||
|
* \param buffer A pointer to the buffer where to store the formatted string. MUST be big enough to store the output!
|
||||||
|
* \param format A string that specifies the format of the output
|
||||||
|
* \return The number of characters that are WRITTEN into the buffer, not counting the terminating null character
|
||||||
|
*/
|
||||||
|
inline int sprintf(char* buffer, const char* format, CPUState &cpu, MemState &mem, module::vargs &args)
|
||||||
|
{
|
||||||
|
const int ret = _vsnprintf(_out_buffer, buffer, (size_t)-1, format, cpu, mem, args);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Tiny snprintf/vsnprintf implementation
|
||||||
|
* \param buffer A pointer to the buffer where to store the formatted string
|
||||||
|
* \param count The maximum number of characters to store in the buffer, including a terminating null character
|
||||||
|
* \param format A string that specifies the format of the output
|
||||||
|
* \return The number of characters that are WRITTEN into the buffer, not counting the terminating null character
|
||||||
|
* If the formatted string is truncated the buffer size (count) is returned
|
||||||
|
*/
|
||||||
|
inline int snprintf(char* buffer, size_t count, const char* format, CPUState &cpu, MemState &mem, module::vargs &args)
|
||||||
|
{
|
||||||
|
const int ret = _vsnprintf(_out_buffer, buffer, count, format, cpu, mem, args);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue