mirror of
https://github.com/KytyPS5/KytyPS5.git
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Initial commit
This commit is contained in:
nmzik
@@ -0,0 +1,808 @@
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//
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// Original algorithm is from:
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// https://github.com/mpaland/printf
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// Marco Paland (info@paland.com)
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// 2014-2019, PALANDesign Hannover, Germany
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// licensed under The MIT License (MIT)
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#include "libs/guestPrintf.h"
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#include "common/abi.h"
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#include "common/assert.h"
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#include "common/common.h"
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#include "common/logging/log.h"
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#include "libs/vaContext.h"
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#include <cfloat>
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#include <cmath>
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#include <vector>
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namespace Libs {
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constexpr uint32_t FLAGS_ZEROPAD = (1U << 0U);
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constexpr uint32_t FLAGS_LEFT = (1U << 1U);
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constexpr uint32_t FLAGS_PLUS = (1U << 2U);
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constexpr uint32_t FLAGS_SPACE = (1U << 3U);
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constexpr uint32_t FLAGS_HASH = (1U << 4U);
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constexpr uint32_t FLAGS_UPPERCASE = (1U << 5U);
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constexpr uint32_t FLAGS_CHAR = (1U << 6U);
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constexpr uint32_t FLAGS_SHORT = (1U << 7U);
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constexpr uint32_t FLAGS_LONG = (1U << 8U);
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constexpr uint32_t FLAGS_LONG_LONG = (1U << 9U);
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constexpr uint32_t FLAGS_PRECISION = (1U << 10U);
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constexpr uint32_t FLAGS_ADAPT_EXP = (1U << 11U);
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constexpr size_t PRINTF_NTOA_BUFFER_SIZE = 32U;
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constexpr size_t PRINTF_FTOA_BUFFER_SIZE = 32U;
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constexpr double PRINTF_MAX_FLOAT = 1e9;
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constexpr uint32_t PRINTF_DEFAULT_FLOAT_PRECISION = 6U;
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using out_fct_type = void (*)(char character, std::vector<char>* buffer, size_t idx,
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size_t /*maxlen*/);
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// internal null output
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static inline void _out_null(char character, std::vector<char>* buffer, size_t /*idx*/,
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size_t /*maxlen*/) {
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buffer->push_back(character);
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}
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static inline bool _is_digit(char ch) {
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return (ch >= '0') && (ch <= '9');
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}
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static unsigned int _atoi(const char** str) {
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unsigned int i = 0U;
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while (_is_digit(**str)) {
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i = i * 10U + static_cast<unsigned int>(*((*str)++) - '0');
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}
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return i;
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}
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static size_t _out_rev(out_fct_type out, std::vector<char>* buffer, size_t idx, size_t maxlen,
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const char* buf, size_t len, unsigned int width, unsigned int flags) {
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const size_t start_idx = idx;
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// pad spaces up to given width
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if ((flags & FLAGS_LEFT) == 0 && (flags & FLAGS_ZEROPAD) == 0) {
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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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while (len != 0u) {
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out(buf[--len], 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) != 0u) {
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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 format
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static size_t _ntoa_format(out_fct_type out, std::vector<char>* buffer, size_t idx, size_t maxlen,
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char* buf, size_t len, bool negative, unsigned int base,
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unsigned int prec, unsigned int width, unsigned int flags) {
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// pad leading zeros
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if ((flags & FLAGS_LEFT) == 0u) {
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if ((width != 0u) && ((flags & FLAGS_ZEROPAD) != 0u) &&
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(negative || ((flags & (FLAGS_PLUS | FLAGS_SPACE)) != 0u))) {
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width--;
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}
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while ((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_ZEROPAD) != 0u) && (len < width) &&
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(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 hash
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if ((flags & FLAGS_HASH) != 0u) {
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if (((flags & FLAGS_PRECISION) == 0u) && (len != 0u) && ((len == prec) || (len == width))) {
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len--;
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if ((len != 0u) && (base == 16U)) {
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len--;
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}
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}
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if ((base == 16U) && ((flags & FLAGS_UPPERCASE) == 0u) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
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buf[len++] = 'x';
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} else if ((base == 16U) && ((flags & FLAGS_UPPERCASE) != 0u) &&
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(len < PRINTF_NTOA_BUFFER_SIZE)) {
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buf[len++] = 'X';
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} else if ((base == 2U) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
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buf[len++] = 'b';
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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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if (len < PRINTF_NTOA_BUFFER_SIZE) {
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if (negative) {
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buf[len++] = '-';
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} else if ((flags & FLAGS_PLUS) != 0u) {
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buf[len++] = '+'; // ignore the space if the '+' exists
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} else if ((flags & FLAGS_SPACE) != 0u) {
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buf[len++] = ' ';
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}
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}
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return _out_rev(out, buffer, idx, maxlen, buf, len, width, flags);
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}
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static size_t _ntoa_long_long(out_fct_type out, std::vector<char>* buffer, size_t idx,
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size_t maxlen, uint64_t value, bool negative, uint64_t base,
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unsigned int prec, unsigned int width, unsigned int flags) {
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char buf[PRINTF_NTOA_BUFFER_SIZE];
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size_t len = 0U;
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// no hash for 0 values
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if (value == 0u) {
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flags &= ~FLAGS_HASH;
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}
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// write if precision != 0 and value is != 0
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if (((flags & FLAGS_PRECISION) == 0u) || (value != 0u)) {
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do {
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const char digit = static_cast<char>(value % base);
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// NOLINTNEXTLINE(bugprone-narrowing-conversions,cppcoreguidelines-narrowing-conversions)
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buf[len++] = digit < 10 ? '0' + digit
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: ((flags & FLAGS_UPPERCASE) != 0u ? 'A' : 'a') + digit - 10;
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value /= base;
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} while ((value != 0u) && (len < PRINTF_NTOA_BUFFER_SIZE));
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}
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return _ntoa_format(out, buffer, idx, maxlen, buf, len, negative,
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static_cast<unsigned int>(base), prec, width, flags);
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}
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// internal itoa for 'long' type
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static size_t _ntoa_long(out_fct_type out, std::vector<char>* buffer, size_t idx, size_t maxlen,
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uint32_t value, bool negative, uint32_t base, unsigned int prec,
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unsigned int width, unsigned int flags) {
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char buf[PRINTF_NTOA_BUFFER_SIZE];
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size_t len = 0U;
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// no hash for 0 values
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if (value == 0u) {
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flags &= ~FLAGS_HASH;
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}
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// write if precision != 0 and value is != 0
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if (((flags & FLAGS_PRECISION) == 0u) || (value != 0u)) {
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do {
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char digit = static_cast<char>(value % base);
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// NOLINTNEXTLINE(bugprone-narrowing-conversions,cppcoreguidelines-narrowing-conversions)
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buf[len++] = digit < 10 ? '0' + digit
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: ((flags & FLAGS_UPPERCASE) != 0u ? 'A' : 'a') + digit - 10;
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value /= base;
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} while ((value != 0u) && (len < PRINTF_NTOA_BUFFER_SIZE));
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}
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return _ntoa_format(out, buffer, idx, maxlen, buf, len, negative,
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static_cast<unsigned int>(base), prec, width, flags);
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}
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static size_t _etoa(out_fct_type out, std::vector<char>* buffer, size_t idx, size_t maxlen,
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double value, unsigned int prec, unsigned int width, unsigned int flags);
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// internal ftoa for fixed decimal floating point
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// NOLINTNEXTLINE(readability-function-cognitive-complexity)
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static size_t _ftoa(out_fct_type out, std::vector<char>* buffer, size_t idx, size_t maxlen,
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double value, unsigned int prec, unsigned int width, unsigned int flags) {
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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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// powers of 10
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static const double pow10[] = {1, 10, 100, 1000, 10000,
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100000, 1000000, 10000000, 100000000, 1000000000};
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// test for special values
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if (value != value) {
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return _out_rev(out, buffer, idx, maxlen, "nan", 3, width, flags);
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}
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if (value < -DBL_MAX) {
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return _out_rev(out, buffer, idx, maxlen, "fni-", 4, width, flags);
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}
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if (value > DBL_MAX) {
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return _out_rev(out, buffer, idx, maxlen, (flags & FLAGS_PLUS) != 0u ? "fni+" : "fni",
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(flags & FLAGS_PLUS) != 0u ? 4U : 3U, width, flags);
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}
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// test for very large values
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// standard printf behavior is to print EVERY whole number digit -- which could be 100s of
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// characters overflowing your buffers == bad
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if ((value > PRINTF_MAX_FLOAT) || (value < -PRINTF_MAX_FLOAT)) {
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return _etoa(out, buffer, idx, maxlen, value, prec, width, flags);
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}
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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, if not set explicitly
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if ((flags & FLAGS_PRECISION) == 0u) {
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prec = PRINTF_DEFAULT_FLOAT_PRECISION;
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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 = static_cast<int>(value);
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double tmp = (value - whole) * pow10[prec];
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auto frac = static_cast<uint32_t>(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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} else if (diff < 0.5) {
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} else if ((frac == 0U) || ((frac & 1U) != 0u)) {
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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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if (prec == 0U) {
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diff = value - static_cast<double>(whole);
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if ((!(diff < 0.5) || (diff > 0.5)) && ((static_cast<uint32_t>(whole) & 1u) != 0)) {
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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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} 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++] = static_cast<char>(48U + (frac % 10U));
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if ((frac /= 10U) == 0u) {
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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++] = static_cast<char>(48 + (whole % 10));
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if ((whole /= 10) == 0) {
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break;
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}
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}
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// pad leading zeros
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if (((flags & FLAGS_LEFT) == 0u) && ((flags & FLAGS_ZEROPAD) != 0u)) {
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if ((width != 0u) && (negative || ((flags & (FLAGS_PLUS | FLAGS_SPACE)) != 0u))) {
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width--;
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}
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while ((len < width) && (len < PRINTF_FTOA_BUFFER_SIZE)) {
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buf[len++] = '0';
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}
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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++] = '-';
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} else if ((flags & FLAGS_PLUS) != 0u) {
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buf[len++] = '+'; // ignore the space if the '+' exists
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} else if ((flags & FLAGS_SPACE) != 0u) {
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buf[len++] = ' ';
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}
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}
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return _out_rev(out, buffer, idx, maxlen, buf, len, width, flags);
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}
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// internal ftoa variant for exponential floating-point type, contributed by Martijn Jasperse
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// <m.jasperse@gmail.com>
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static size_t _etoa(out_fct_type out, std::vector<char>* buffer, size_t idx, size_t maxlen,
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double value, unsigned int prec, unsigned int width, unsigned int flags) {
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// check for NaN and special values
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if ((value != value) || (value > DBL_MAX) || (value < -DBL_MAX)) {
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return _ftoa(out, buffer, idx, maxlen, value, prec, width, flags);
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}
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// determine the sign
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const bool negative = value < 0;
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if (negative) {
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value = -value;
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}
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// default precision
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if ((flags & FLAGS_PRECISION) == 0u) {
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prec = PRINTF_DEFAULT_FLOAT_PRECISION;
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}
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// determine the decimal exponent
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// based on the algorithm by David Gay (https://www.ampl.com/netlib/fp/dtoa.c)
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union {
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uint64_t U;
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double F;
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} conv {};
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conv.F = value;
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int exp2 = static_cast<int>((conv.U >> 52U) & 0x07FFU) - 1023; // effectively log2
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conv.U = (conv.U & ((1ULL << 52U) - 1U)) |
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(1023ULL << 52U); // drop the exponent so conv.F is now in [1,2)
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// now approximate log10 from the log2 integer part and an expansion of ln around 1.5
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int expval = static_cast<int>(0.1760912590558 + exp2 * 0.301029995663981 +
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(conv.F - 1.5) * 0.289529654602168);
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// now we want to compute 10^expval but we want to be sure it won't overflow
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// exp2 = static_cast<int>(expval * 3.321928094887362 + 0.5);
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exp2 = static_cast<int>(lround(expval * 3.321928094887362));
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const double z = expval * 2.302585092994046 - exp2 * 0.6931471805599453;
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const double z2 = z * z;
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conv.U = static_cast<uint64_t>(exp2 + 1023) << 52U;
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// compute exp(z) using continued fractions, see
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// https://en.wikipedia.org/wiki/Exponential_function#Continued_fractions_for_ex
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conv.F *= 1 + 2 * z / (2 - z + (z2 / (6 + (z2 / (10 + z2 / 14)))));
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// correct for rounding errors
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if (value < conv.F) {
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expval--;
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conv.F /= 10;
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}
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// the exponent format is "%+03d" and largest value is "307", so set aside 4-5 characters
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unsigned int minwidth = ((expval < 100) && (expval > -100)) ? 4U : 5U;
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// in "%g" mode, "prec" is the number of *significant figures* not decimals
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if ((flags & FLAGS_ADAPT_EXP) != 0u) {
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||||
// do we want to fall-back to "%f" mode?
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if ((value >= 1e-4) && (value < 1e6)) {
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if (static_cast<int>(prec) > expval) {
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prec = static_cast<unsigned>(static_cast<int>(prec) - expval - 1);
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} else {
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prec = 0;
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}
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flags |= FLAGS_PRECISION; // make sure _ftoa respects precision
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// no characters in exponent
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minwidth = 0U;
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expval = 0;
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} else {
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// we use one sigfig for the whole part
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||||
if ((prec > 0) && ((flags & FLAGS_PRECISION) != 0u)) {
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--prec;
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||||
}
|
||||
}
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||||
}
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||||
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||||
// will everything fit?
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||||
unsigned int fwidth = width;
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||||
if (width > minwidth) {
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||||
// we didn't fall-back so subtract the characters required for the exponent
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||||
fwidth -= minwidth;
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||||
} else {
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||||
// not enough characters, so go back to default sizing
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||||
fwidth = 0U;
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||||
}
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||||
if (((flags & FLAGS_LEFT) != 0u) && (minwidth != 0u)) {
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||||
// if we're padding on the right, DON'T pad the floating part
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||||
fwidth = 0U;
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}
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||||
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// rescale the float value
|
||||
if (expval != 0) {
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||||
value /= conv.F;
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||||
}
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||||
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||||
// output the floating part
|
||||
const size_t start_idx = idx;
|
||||
idx = _ftoa(out, buffer, idx, maxlen, negative ? -value : value, prec, fwidth,
|
||||
flags & ~FLAGS_ADAPT_EXP);
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||||
|
||||
// output the exponent part
|
||||
if (minwidth != 0u) {
|
||||
// output the exponential symbol
|
||||
out((flags & FLAGS_UPPERCASE) != 0u ? 'E' : 'e', buffer, idx++, maxlen);
|
||||
// output the exponent value
|
||||
idx = _ntoa_long(out, buffer, idx, maxlen, (expval < 0) ? -expval : expval, expval < 0, 10,
|
||||
0, minwidth - 1, FLAGS_ZEROPAD | FLAGS_PLUS);
|
||||
// might need to right-pad spaces
|
||||
if ((flags & FLAGS_LEFT) != 0u) {
|
||||
while (idx - start_idx < width) {
|
||||
out(' ', buffer, idx++, maxlen);
|
||||
}
|
||||
}
|
||||
}
|
||||
return idx;
|
||||
}
|
||||
|
||||
static inline unsigned int _strnlen_s(const char* str, size_t maxsize) {
|
||||
const char* s = nullptr;
|
||||
for (s = str; (*s != 0) && ((maxsize--) != 0u); ++s) {
|
||||
;
|
||||
}
|
||||
return static_cast<unsigned int>(s - str);
|
||||
}
|
||||
|
||||
// NOLINTNEXTLINE(readability-function-cognitive-complexity)
|
||||
static int kyty_printf_internal(bool sn, char* sn_s, size_t sn_n, const char* format,
|
||||
VaList* va_list) {
|
||||
std::vector<char> buffer;
|
||||
|
||||
uint32_t flags = 0;
|
||||
uint32_t width = 0;
|
||||
uint32_t precision = 0;
|
||||
uint32_t n = 0;
|
||||
size_t idx = 0U;
|
||||
auto maxlen = static_cast<size_t>(-1);
|
||||
|
||||
// use null output function
|
||||
auto out = _out_null;
|
||||
|
||||
while (*format != 0) {
|
||||
// format specifier? %[flags][width][.precision][length]
|
||||
if (*format != '%') {
|
||||
// no
|
||||
out(*format, &buffer, idx++, maxlen);
|
||||
format++;
|
||||
continue;
|
||||
}
|
||||
|
||||
// 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 != 0u);
|
||||
|
||||
// evaluate width field
|
||||
width = 0U;
|
||||
if (_is_digit(*format)) {
|
||||
width = _atoi(&format);
|
||||
} else if (*format == '*') {
|
||||
// const int w = va_arg(va, int);
|
||||
const int w = VaArg_int(va_list);
|
||||
if (w < 0) {
|
||||
flags |= FLAGS_LEFT; // reverse padding
|
||||
width = static_cast<unsigned int>(-w);
|
||||
} else {
|
||||
width = static_cast<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 == '*') {
|
||||
// const int prec = (int)va_arg(va, int);
|
||||
const int prec = VaArg_int(va_list);
|
||||
precision = prec > 0 ? static_cast<unsigned int>(prec) : 0U;
|
||||
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;
|
||||
case 't':
|
||||
flags |= (sizeof(ptrdiff_t) == sizeof(int32_t) ? FLAGS_LONG : FLAGS_LONG_LONG);
|
||||
format++;
|
||||
break;
|
||||
case 'j':
|
||||
flags |= (sizeof(intmax_t) == sizeof(int32_t) ? FLAGS_LONG : FLAGS_LONG_LONG);
|
||||
format++;
|
||||
break;
|
||||
case 'z':
|
||||
flags |= (sizeof(size_t) == sizeof(int32_t) ? 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 = 0;
|
||||
if (*format == 'x' || *format == 'X') {
|
||||
base = 16U;
|
||||
} else if (*format == 'o') {
|
||||
base = 8U;
|
||||
} else if (*format == 'b') {
|
||||
base = 2U;
|
||||
} 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);
|
||||
}
|
||||
|
||||
// ignore '0' flag when precision is given
|
||||
if ((flags & FLAGS_PRECISION) != 0u) {
|
||||
flags &= ~FLAGS_ZEROPAD;
|
||||
}
|
||||
|
||||
// convert the integer
|
||||
if ((*format == 'i') || (*format == 'd')) {
|
||||
// signed
|
||||
if ((flags & FLAGS_LONG_LONG) != 0u || (flags & FLAGS_LONG) != 0u) {
|
||||
// const long long value = va_arg(va, long long);
|
||||
auto value = VaArg_long_long(va_list);
|
||||
idx = _ntoa_long_long(out, &buffer, idx, maxlen,
|
||||
static_cast<uint64_t>(value > 0 ? value : 0 - value),
|
||||
value < 0, base, precision, width, flags);
|
||||
} else if ((flags & FLAGS_LONG) != 0u) {
|
||||
// const long value = va_arg(va, long);
|
||||
auto value = VaArg_long(va_list);
|
||||
idx = _ntoa_long(out, &buffer, idx, maxlen,
|
||||
static_cast<uint32_t>(value > 0 ? value : 0 - value),
|
||||
value < 0, base, precision, width, flags);
|
||||
} else {
|
||||
// const int value = (flags & FLAGS_CHAR) ? (char)va_arg(va, int)
|
||||
// : (flags & FLAGS_SHORT) ? (short int)va_arg(va, int)
|
||||
// : va_arg(va, int);
|
||||
int value =
|
||||
(flags & FLAGS_CHAR) != 0u ? static_cast<char>(VaArg_int(va_list))
|
||||
: (flags & FLAGS_SHORT) != 0u ? static_cast<int16_t>(VaArg_int(va_list))
|
||||
: VaArg_int(va_list);
|
||||
idx = _ntoa_long(out, &buffer, idx, maxlen,
|
||||
static_cast<unsigned int>(value > 0 ? value : 0 - value),
|
||||
value < 0, base, precision, width, flags);
|
||||
}
|
||||
} else {
|
||||
// unsigned
|
||||
if ((flags & FLAGS_LONG_LONG) != 0u || (flags & FLAGS_LONG) != 0u) {
|
||||
idx = _ntoa_long_long(out, &buffer, idx, maxlen,
|
||||
static_cast<uint64_t>(VaArg_long_long(va_list)),
|
||||
false, base, precision, width, flags);
|
||||
} else if ((flags & FLAGS_LONG) != 0u) {
|
||||
idx = _ntoa_long(out, &buffer, idx, maxlen,
|
||||
static_cast<uint32_t>(VaArg_long(va_list)), false, base,
|
||||
precision, width, flags);
|
||||
} else {
|
||||
const unsigned int value =
|
||||
(flags & FLAGS_CHAR) != 0u
|
||||
? static_cast<unsigned char>(VaArg_int(va_list))
|
||||
: (flags & FLAGS_SHORT) != 0u
|
||||
? static_cast<uint16_t>(VaArg_int(va_list))
|
||||
: static_cast<unsigned int>(VaArg_int(va_list));
|
||||
idx = _ntoa_long(out, &buffer, idx, maxlen, value, false, base, precision,
|
||||
width, flags);
|
||||
}
|
||||
}
|
||||
format++;
|
||||
break;
|
||||
}
|
||||
case 'f':
|
||||
case 'F':
|
||||
if (*format == 'F') {
|
||||
flags |= FLAGS_UPPERCASE;
|
||||
}
|
||||
idx = _ftoa(out, &buffer, idx, maxlen, VaArg_double(va_list), precision, width,
|
||||
flags);
|
||||
format++;
|
||||
break;
|
||||
case 'e':
|
||||
case 'E':
|
||||
case 'g':
|
||||
case 'G':
|
||||
if ((*format == 'g') || (*format == 'G')) {
|
||||
flags |= FLAGS_ADAPT_EXP;
|
||||
}
|
||||
if ((*format == 'E') || (*format == 'G')) {
|
||||
flags |= FLAGS_UPPERCASE;
|
||||
}
|
||||
idx = _etoa(out, &buffer, idx, maxlen, VaArg_double(va_list), precision, width,
|
||||
flags);
|
||||
format++;
|
||||
break;
|
||||
case 'c': {
|
||||
unsigned int l = 1U;
|
||||
// pre padding
|
||||
if ((flags & FLAGS_LEFT) == 0u) {
|
||||
while (l++ < width) {
|
||||
out(' ', &buffer, idx++, maxlen);
|
||||
}
|
||||
}
|
||||
// char output
|
||||
out(static_cast<char>(VaArg_int(va_list)), &buffer, idx++, maxlen);
|
||||
// post padding
|
||||
if ((flags & FLAGS_LEFT) != 0u) {
|
||||
while (l++ < width) {
|
||||
out(' ', &buffer, idx++, maxlen);
|
||||
}
|
||||
}
|
||||
format++;
|
||||
break;
|
||||
}
|
||||
|
||||
case 's': {
|
||||
// const char* p = va_arg(va, char*);
|
||||
const char* p = VaArg_ptr<const char>(va_list);
|
||||
unsigned int l =
|
||||
_strnlen_s(p, precision != 0u ? precision : static_cast<size_t>(-1));
|
||||
// pre padding
|
||||
if ((flags & FLAGS_PRECISION) != 0u) {
|
||||
l = (l < precision ? l : precision);
|
||||
}
|
||||
if ((flags & FLAGS_LEFT) == 0u) {
|
||||
while (l++ < width) {
|
||||
out(' ', &buffer, idx++, maxlen);
|
||||
}
|
||||
}
|
||||
// string output
|
||||
while ((*p != 0) && (((flags & FLAGS_PRECISION) == 0u) || ((precision--) != 0u))) {
|
||||
out(*(p++), &buffer, idx++, maxlen);
|
||||
}
|
||||
// post padding
|
||||
if ((flags & FLAGS_LEFT) != 0u) {
|
||||
while (l++ < width) {
|
||||
out(' ', &buffer, idx++, maxlen);
|
||||
}
|
||||
}
|
||||
format++;
|
||||
break;
|
||||
}
|
||||
|
||||
case 'p': {
|
||||
width = sizeof(void*) * 2U;
|
||||
flags |= FLAGS_ZEROPAD | FLAGS_UPPERCASE;
|
||||
const bool is_ll = sizeof(uintptr_t) == sizeof(int64_t);
|
||||
if (is_ll) {
|
||||
idx = _ntoa_long_long(out, &buffer, idx, maxlen,
|
||||
reinterpret_cast<uintptr_t>(VaArg_ptr<void>(va_list)),
|
||||
false, 16U, precision, width, flags);
|
||||
} else {
|
||||
idx = _ntoa_long(out, &buffer, idx, maxlen,
|
||||
static_cast<uint32_t>(
|
||||
reinterpret_cast<uintptr_t>(VaArg_ptr<void>(va_list))),
|
||||
false, 16U, precision, width, flags);
|
||||
}
|
||||
format++;
|
||||
break;
|
||||
}
|
||||
|
||||
case '%':
|
||||
out('%', &buffer, idx++, maxlen);
|
||||
format++;
|
||||
break;
|
||||
|
||||
default:
|
||||
out(*format, &buffer, idx++, maxlen);
|
||||
format++;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// termination
|
||||
out(static_cast<char>(0), &buffer, idx < maxlen ? idx : maxlen - 1U, maxlen);
|
||||
|
||||
if (sn) {
|
||||
int s = snprintf(sn_s, sn_n, "%s", buffer.data());
|
||||
EXIT_NOT_IMPLEMENTED(static_cast<size_t>(s) >= sn_n);
|
||||
} else {
|
||||
LOGF_COLOR(Log::Color::BrightMagenta, "%s", buffer.data());
|
||||
}
|
||||
|
||||
// return written chars without terminating \0
|
||||
return static_cast<int>(idx);
|
||||
}
|
||||
|
||||
static int kyty_vprintf(const char* format, VaList* va_list) {
|
||||
return kyty_printf_internal(false, nullptr, 0, format, va_list);
|
||||
}
|
||||
|
||||
static int kyty_printf_ctx(VaContext* ctx) {
|
||||
const char* format = VaArg_ptr<const char>(&ctx->va_list);
|
||||
|
||||
return kyty_printf_internal(false, nullptr, 0, format, &ctx->va_list);
|
||||
}
|
||||
|
||||
static int kyty_snprintf_ctx(VaContext* ctx) {
|
||||
char* s = VaArg_ptr<char>(&ctx->va_list);
|
||||
size_t n = VaArg_size_t(&ctx->va_list);
|
||||
const char* format = VaArg_ptr<const char>(&ctx->va_list);
|
||||
|
||||
return kyty_printf_internal(true, s, n, format, &ctx->va_list);
|
||||
}
|
||||
|
||||
static int KYTY_SYSV_ABI kyty_printf_std(VA_ARGS) {
|
||||
VA_CONTEXT(ctx); // NOLINT(cppcoreguidelines-pro-type-member-init,hicpp-member-init)
|
||||
|
||||
return kyty_printf_ctx(&ctx);
|
||||
}
|
||||
|
||||
guest_printf_std_func_t GetGuestPrintfStdFunc() {
|
||||
return reinterpret_cast<guest_printf_std_func_t>(kyty_printf_std);
|
||||
}
|
||||
|
||||
guest_printf_ctx_func_t GetGuestPrintfCtxFunc() {
|
||||
return kyty_printf_ctx;
|
||||
}
|
||||
|
||||
guest_snprintf_ctx_func_t GetGuestSnprintfCtxFunc() {
|
||||
return kyty_snprintf_ctx;
|
||||
}
|
||||
|
||||
guest_vprintf_func_t GetGuestVprintfFunc() {
|
||||
return kyty_vprintf;
|
||||
}
|
||||
|
||||
} // namespace Libs
|
||||
Reference in New Issue
Block a user