small adjustments to printf
This commit is contained in:
georgemoralis
parent
551455e56e
commit
e31365aea3
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@ -50,13 +50,14 @@
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#pragma once
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#include <stdio.h>
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#include <cstdarg>
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#include <cstdbool>
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#include <cstddef>
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#include <cstdint>
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#include "va_ctx.h"
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#include <stdio.h>
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namespace Emulator::HLE::Libraries::LibC {
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// ntoa conversion buffer size, this must be big enough to hold
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@ -388,328 +389,308 @@ static inline size_t _ftoa(out_fct_type out, char* buffer, size_t idx, size_t ma
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}
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#endif // PRINTF_SUPPORT_FLOAT
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// internal vsnprintf
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static inline int _vsnprintf(out_fct_type out, char* buffer, const size_t maxlen, const char* format, VaList* va_list)
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{
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unsigned int flags, width, precision, n;
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size_t idx = 0U;
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static inline int _vsnprintf(out_fct_type out, char* buffer, const char* format, VaList* va_list) {
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unsigned int flags, width, precision, n;
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size_t idx = 0U;
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auto maxlen = static_cast<size_t>(-1);
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if (!buffer) {
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// use null output function
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out = _out_null;
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}
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while (*format)
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{
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// format specifier? %[flags][width][.precision][length]
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if (*format != '%') {
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// no
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out(*format, buffer, idx++, maxlen);
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format++;
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continue;
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}
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else {
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// yes, evaluate it
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format++;
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if (!buffer) {
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// use null output function
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out = _out_null;
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}
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// evaluate flags
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flags = 0U;
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do {
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switch (*format) {
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case '0': flags |= FLAGS_ZEROPAD; format++; n = 1U; break;
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case '-': flags |= FLAGS_LEFT; format++; n = 1U; break;
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case '+': flags |= FLAGS_PLUS; format++; n = 1U; break;
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case ' ': flags |= FLAGS_SPACE; format++; n = 1U; break;
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case '#': flags |= FLAGS_HASH; format++; n = 1U; break;
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default : n = 0U; break;
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}
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} while (n);
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// evaluate width field
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width = 0U;
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if (_is_digit(*format)) {
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width = _atoi(&format);
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}
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else if (*format == '*') {
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const int w = vaArgInteger(va_list); // const int w = va.next<int>(cpu, mem);
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if (w < 0) {
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flags |= FLAGS_LEFT; // reverse padding
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width = (unsigned int)-w;
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}
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else {
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width = (unsigned int)w;
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}
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format++;
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}
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// evaluate precision field
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precision = 0U;
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if (*format == '.') {
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flags |= FLAGS_PRECISION;
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format++;
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if (_is_digit(*format)) {
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precision = _atoi(&format);
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}
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else if (*format == '*') {
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precision = vaArgInteger(va_list); // precision = (unsigned int)va.next<int>(cpu, mem);
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format++;
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}
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}
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// evaluate length field
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switch (*format) {
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case 'l' :
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flags |= FLAGS_LONG;
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format++;
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if (*format == 'l') {
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flags |= FLAGS_LONG_LONG;
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format++;
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while (*format) {
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// format specifier? %[flags][width][.precision][length]
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if (*format != '%') {
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// no
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out(*format, buffer, idx++, maxlen);
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format++;
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continue;
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} else {
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// yes, evaluate it
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format++;
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}
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break;
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case 'h' :
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flags |= FLAGS_SHORT;
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format++;
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if (*format == 'h') {
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flags |= FLAGS_CHAR;
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format++;
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// evaluate flags
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flags = 0U;
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do {
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switch (*format) {
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case '0':
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flags |= FLAGS_ZEROPAD;
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format++;
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n = 1U;
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break;
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case '-':
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flags |= FLAGS_LEFT;
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format++;
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n = 1U;
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break;
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case '+':
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flags |= FLAGS_PLUS;
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format++;
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n = 1U;
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break;
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case ' ':
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flags |= FLAGS_SPACE;
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format++;
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n = 1U;
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break;
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case '#':
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flags |= FLAGS_HASH;
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format++;
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n = 1U;
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break;
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default: n = 0U; break;
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}
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} while (n);
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// evaluate width field
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width = 0U;
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if (_is_digit(*format)) {
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width = _atoi(&format);
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} else if (*format == '*') {
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const int w = vaArgInteger(va_list); // const int w = va.next<int>(cpu, mem);
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if (w < 0) {
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flags |= FLAGS_LEFT; // reverse padding
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width = (unsigned int)-w;
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} else {
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width = (unsigned int)w;
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}
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format++;
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}
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break;
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// evaluate precision field
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precision = 0U;
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if (*format == '.') {
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flags |= FLAGS_PRECISION;
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format++;
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if (_is_digit(*format)) {
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precision = _atoi(&format);
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} else if (*format == '*') {
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precision = vaArgInteger(va_list); // precision = (unsigned int)va.next<int>(cpu, mem);
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format++;
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}
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}
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// evaluate length field
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switch (*format) {
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case 'l':
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flags |= FLAGS_LONG;
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format++;
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if (*format == 'l') {
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flags |= FLAGS_LONG_LONG;
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format++;
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}
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break;
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case 'h':
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flags |= FLAGS_SHORT;
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format++;
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if (*format == 'h') {
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flags |= FLAGS_CHAR;
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format++;
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}
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break;
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#if defined(PRINTF_SUPPORT_PTRDIFF_T)
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case 't' :
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flags |= (sizeof(ptrdiff_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
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format++;
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break;
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case 't':
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flags |= (sizeof(ptrdiff_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
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format++;
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break;
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#endif
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case 'j' :
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flags |= (sizeof(intmax_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
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format++;
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break;
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case 'z' :
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flags |= (sizeof(size_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
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format++;
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break;
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default :
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break;
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}
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// evaluate specifier
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switch (*format) {
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case 'd' :
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case 'i' :
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case 'u' :
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case 'x' :
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case 'X' :
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case 'o' :
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case 'b' : {
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// set the base
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unsigned int base;
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if (*format == 'x' || *format == 'X') {
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base = 16U;
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}
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else if (*format == 'o') {
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base = 8U;
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}
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else if (*format == 'b') {
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base = 2U;
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flags &= ~FLAGS_HASH; // no hash for bin format
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}
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else {
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base = 10U;
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flags &= ~FLAGS_HASH; // no hash for dec format
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}
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// uppercase
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if (*format == 'X') {
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flags |= FLAGS_UPPERCASE;
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case 'j':
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flags |= (sizeof(intmax_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
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format++;
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break;
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case 'z':
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flags |= (sizeof(size_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
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format++;
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break;
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default: break;
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}
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// no plus or space flag for u, x, X, o, b
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if ((*format != 'i') && (*format != 'd')) {
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flags &= ~(FLAGS_PLUS | FLAGS_SPACE);
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}
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// evaluate specifier
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switch (*format) {
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case 'd':
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case 'i':
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case 'u':
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case 'x':
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case 'X':
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case 'o':
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case 'b': {
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// set the base
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unsigned int base;
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if (*format == 'x' || *format == 'X') {
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base = 16U;
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} else if (*format == 'o') {
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base = 8U;
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} else if (*format == 'b') {
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base = 2U;
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flags &= ~FLAGS_HASH; // no hash for bin format
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} else {
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base = 10U;
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flags &= ~FLAGS_HASH; // no hash for dec format
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}
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// uppercase
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if (*format == 'X') {
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flags |= FLAGS_UPPERCASE;
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}
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// convert the integer
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if ((*format == 'i') || (*format == 'd')) {
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// signed
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if (flags & FLAGS_LONG_LONG) {
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// no plus or space flag for u, x, X, o, b
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if ((*format != 'i') && (*format != 'd')) {
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flags &= ~(FLAGS_PLUS | FLAGS_SPACE);
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}
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// convert the integer
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if ((*format == 'i') || (*format == 'd')) {
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// signed
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if (flags & FLAGS_LONG_LONG) {
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#if defined(PRINTF_SUPPORT_LONG_LONG)
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auto value = vaArgLongLong(va_list); // const long long value = va.next<long long>(cpu, mem);
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idx = _ntoa_long_long(out, buffer, idx, maxlen, (unsigned long long)(value > 0 ? value : 0 - value), value < 0, base, precision, width, flags);
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auto value = vaArgLongLong(va_list); // const long long value = va.next<long long>(cpu, mem);
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idx = _ntoa_long_long(out, buffer, idx, maxlen, (unsigned long long)(value > 0 ? value : 0 - value), value < 0, base,
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precision, width, flags);
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#endif
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}
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else if (flags & FLAGS_LONG) {
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auto value = vaArgLong(va_list); // const long value = va.next<long>(cpu, mem);
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idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned long)(value > 0 ? value : 0 - value), value < 0, base, precision, width, flags);
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}
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else {
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//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);
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const int value = (flags & FLAGS_CHAR) ? static_cast<char>(vaArgInteger(va_list))
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: (flags & FLAGS_SHORT) ? static_cast<int16_t>(vaArgInteger(va_list))
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: vaArgInteger(va_list);
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idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned int)(value > 0 ? value : 0 - value), value < 0, base, precision, width, flags);
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}
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}
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else {
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// unsigned
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if (flags & FLAGS_LONG_LONG) {
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} else if (flags & FLAGS_LONG) {
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auto value = vaArgLong(va_list); // const long value = va.next<long>(cpu, mem);
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idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned long)(value > 0 ? value : 0 - value), value < 0, base, precision, width,
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flags);
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} else {
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// const int value = (flags & FLAGS_CHAR) ? (char)va.next<int>(cpu, mem) : (flags & FLAGS_SHORT) ? (short
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// int)va.next<int>(cpu, mem): va.next<int>(cpu, mem);
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const int value = (flags & FLAGS_CHAR) ? static_cast<char>(vaArgInteger(va_list))
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: (flags & FLAGS_SHORT) ? static_cast<int16_t>(vaArgInteger(va_list))
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: vaArgInteger(va_list);
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idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned int)(value > 0 ? value : 0 - value), value < 0, base, precision, width,
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flags);
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}
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} else {
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// unsigned
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if (flags & FLAGS_LONG_LONG) {
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#if defined(PRINTF_SUPPORT_LONG_LONG)
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//idx = _ntoa_long_long(out, buffer, idx, maxlen, va.next<unsigned long long>(cpu, mem), false, base, precision, width, flags);
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idx = _ntoa_long_long(out, buffer, idx, maxlen, static_cast<u64>(vaArgLongLong(va_list)), false, base, precision, width, flags);
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// idx = _ntoa_long_long(out, buffer, idx, maxlen, va.next<unsigned long long>(cpu, mem), false, base, precision, width,
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// flags);
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idx =
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_ntoa_long_long(out, buffer, idx, maxlen, static_cast<u64>(vaArgLongLong(va_list)), false, base, precision, width, flags);
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#endif
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}
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else if (flags & FLAGS_LONG) {
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// idx = _ntoa_long(out, buffer, idx, maxlen, va.next<unsigned long>(cpu, mem), false, base, precision, width, flags);
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idx = _ntoa_long(out, buffer, idx, maxlen, static_cast<u32>(vaArgLong(va_list)), false, base, precision, width, flags);
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}
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else {
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//const unsigned int value = (flags & FLAGS_CHAR) ? (unsigned char)va.next<unsigned int>(cpu, mem) : (flags & FLAGS_SHORT) ?
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// (unsigned short int)va.next<unsigned int>(cpu, mem) : va.next<unsigned int>(cpu, mem);
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const unsigned int value = (flags & FLAGS_CHAR) ? static_cast<u08>(vaArgInteger(va_list))
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: (flags & FLAGS_SHORT) ? static_cast<u16>(vaArgInteger(va_list))
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: static_cast<u32>(vaArgInteger(va_list));
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idx = _ntoa_long(out, buffer, idx, maxlen, value, false, base, precision, width, flags);
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}
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}
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format++;
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break;
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}
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} else if (flags & FLAGS_LONG) {
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// idx = _ntoa_long(out, buffer, idx, maxlen, va.next<unsigned long>(cpu, mem), false, base, precision, width, flags);
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idx = _ntoa_long(out, buffer, idx, maxlen, static_cast<u32>(vaArgLong(va_list)), false, base, precision, width, flags);
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} else {
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// const unsigned int value = (flags & FLAGS_CHAR) ? (unsigned char)va.next<unsigned int>(cpu, mem) : (flags & FLAGS_SHORT) ?
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// (unsigned short int)va.next<unsigned int>(cpu, mem) : va.next<unsigned int>(cpu, mem);
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const unsigned int value = (flags & FLAGS_CHAR) ? static_cast<u08>(vaArgInteger(va_list))
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: (flags & FLAGS_SHORT) ? static_cast<u16>(vaArgInteger(va_list))
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: static_cast<u32>(vaArgInteger(va_list));
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idx = _ntoa_long(out, buffer, idx, maxlen, value, false, base, precision, width, flags);
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}
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}
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format++;
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break;
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}
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#if defined(PRINTF_SUPPORT_FLOAT)
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case 'f' :
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case 'F' :
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//idx = _ftoa(out, buffer, idx, maxlen, va.next<double>(cpu, mem), precision, width, flags);
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idx = _ftoa(out, buffer, idx, maxlen, vaArgDouble(va_list), precision, width, flags);
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format++;
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break;
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case 'f':
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case 'F':
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// idx = _ftoa(out, buffer, idx, maxlen, va.next<double>(cpu, mem), precision, width, flags);
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idx = _ftoa(out, buffer, idx, maxlen, vaArgDouble(va_list), precision, width, flags);
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format++;
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break;
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#endif // PRINTF_SUPPORT_FLOAT
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case 'c' : {
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unsigned int l = 1U;
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// pre padding
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if (!(flags & FLAGS_LEFT)) {
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while (l++ < width) {
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out(' ', buffer, idx++, maxlen);
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}
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}
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// char output
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//out((char)va.next<int>(cpu, mem), buffer, idx++, maxlen);
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out(static_cast<char>(vaArgInteger(va_list)), buffer, idx++, maxlen);
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// post padding
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if (flags & FLAGS_LEFT) {
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while (l++ < width) {
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out(' ', buffer, idx++, maxlen);
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}
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}
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format++;
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break;
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}
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case 'c': {
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unsigned int l = 1U;
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// pre padding
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if (!(flags & FLAGS_LEFT)) {
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while (l++ < width) {
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out(' ', buffer, idx++, maxlen);
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}
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}
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// char output
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// out((char)va.next<int>(cpu, mem), buffer, idx++, maxlen);
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out(static_cast<char>(vaArgInteger(va_list)), buffer, idx++, maxlen);
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// post padding
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if (flags & FLAGS_LEFT) {
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while (l++ < width) {
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out(' ', buffer, idx++, maxlen);
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}
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}
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format++;
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break;
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}
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case 's' : {
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const char* p = vaArgPtr<const char>(va_list); // const char *p = va.next<Ptr<char>>(cpu, mem).get(mem);
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p = p != nullptr ? p : "(null)";
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unsigned int l = _strlen(p);
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// pre padding
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if (flags & FLAGS_PRECISION) {
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l = (l < precision ? l : precision);
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}
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if (!(flags & FLAGS_LEFT)) {
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while (l++ < width) {
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out(' ', buffer, idx++, maxlen);
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}
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}
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// string output
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while ((*p != 0) && (!(flags & FLAGS_PRECISION) || precision--)) {
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out(*(p++), buffer, idx++, maxlen);
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}
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// post padding
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if (flags & FLAGS_LEFT) {
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||||
while (l++ < width) {
|
||||
out(' ', buffer, idx++, maxlen);
|
||||
}
|
||||
}
|
||||
format++;
|
||||
break;
|
||||
}
|
||||
case 's': {
|
||||
const char* p = vaArgPtr<const char>(va_list); // 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;
|
||||
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);
|
||||
idx = _ntoa_long_long(out, buffer, idx, maxlen, reinterpret_cast<uintptr_t>(vaArgPtr<void>(va_list)), false, 16U, precision, width, flags);
|
||||
}
|
||||
else {
|
||||
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);
|
||||
idx = _ntoa_long_long(out, buffer, idx, maxlen, reinterpret_cast<uintptr_t>(vaArgPtr<void>(va_list)), 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);
|
||||
idx = _ntoa_long(out, buffer, idx, maxlen, static_cast<uint32_t>(reinterpret_cast<uintptr_t>(vaArgPtr<void>(va_list))), false, 16U,
|
||||
precision, width,
|
||||
flags);
|
||||
// idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned long)((uintptr_t)va.next<Ptr<void>>(cpu, mem).address()), false, 16U,
|
||||
// precision, width, flags);
|
||||
idx = _ntoa_long(out, buffer, idx, maxlen, static_cast<uint32_t>(reinterpret_cast<uintptr_t>(vaArgPtr<void>(va_list))), false,
|
||||
16U, precision, width, flags);
|
||||
#if defined(PRINTF_SUPPORT_LONG_LONG)
|
||||
}
|
||||
}
|
||||
#endif
|
||||
format++;
|
||||
break;
|
||||
}
|
||||
format++;
|
||||
break;
|
||||
}
|
||||
|
||||
case '%' :
|
||||
out('%', buffer, idx++, maxlen);
|
||||
format++;
|
||||
break;
|
||||
case '%':
|
||||
out('%', buffer, idx++, maxlen);
|
||||
format++;
|
||||
break;
|
||||
|
||||
default :
|
||||
out(*format, buffer, idx++, maxlen);
|
||||
format++;
|
||||
break;
|
||||
default:
|
||||
out(*format, buffer, idx++, maxlen);
|
||||
format++;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// termination
|
||||
out((char)0, buffer, idx < maxlen ? idx : maxlen - 1U, maxlen);
|
||||
// termination
|
||||
out((char)0, buffer, idx < maxlen ? idx : maxlen - 1U, maxlen);
|
||||
|
||||
// return written chars without terminating \0
|
||||
return (int)idx;
|
||||
// return written chars without terminating \0
|
||||
return (int)idx;
|
||||
}
|
||||
|
||||
static int printf_ctx(VaCtx* ctx) {
|
||||
const char* format = vaArgPtr<const char>(&ctx->va_list);
|
||||
char buffer[256];
|
||||
int result= _vsnprintf(_out_buffer, buffer, (size_t)-1, format, &ctx->va_list);
|
||||
puts(buffer);
|
||||
return result;
|
||||
const char* format = vaArgPtr<const char>(&ctx->va_list);
|
||||
char buffer[256];
|
||||
int result = _vsnprintf(_out_buffer, buffer, format, &ctx->va_list);
|
||||
printf("%s", buffer);
|
||||
return result;
|
||||
}
|
||||
|
||||
#if 0
|
||||
///////////////////////////////////////////////////////
|
||||
|
||||
/**
|
||||
* 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
|
||||
|
||||
} // namespace Emulator::HLE::Libraries::LibC
|
||||
|
|
|
|||
Loading…
Reference in New Issue