Update LVGL to v9.1.0

1 files changed, 0 insertions, 879 deletions

diff --git a/lib/lvgl/src/misc/lv_printf.c b/lib/lvgl/src/misc/lv_printf.c
deleted file mode 100644
index 9077a7a1..00000000
--- a/lib/lvgl/src/misc/lv_printf.c
+++ /dev/null
@@ -1,879 +0,0 @@
-///////////////////////////////////////////////////////////////////////////////
-// \author (c) Marco Paland (info@paland.com)
-//             2014-2019, PALANDesign Hannover, Germany
-//
-// \license The MIT License (MIT)
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
-//
-// \brief Tiny printf, sprintf and (v)snprintf implementation, optimized for speed on
-//        embedded systems with a very limited resources. These routines are thread
-//        safe and reentrant!
-//        Use this instead of the bloated standard/newlib printf cause these use
-//        malloc for printf (and may not be thread safe).
-//
-///////////////////////////////////////////////////////////////////////////////
-
-/*Original repository: https://github.com/mpaland/printf*/
-
-#include "lv_printf.h"
-
-#if LV_SPRINTF_CUSTOM == 0
-
-#include <stdbool.h>
-
-#define PRINTF_DISABLE_SUPPORT_FLOAT    (!LV_SPRINTF_USE_FLOAT)
-
-// 'ntoa' conversion buffer size, this must be big enough to hold one converted
-// numeric number including padded zeros (dynamically created on stack)
-// default: 32 byte
-#ifndef PRINTF_NTOA_BUFFER_SIZE
-    #define PRINTF_NTOA_BUFFER_SIZE    32U
-#endif
-
-// 'ftoa' conversion buffer size, this must be big enough to hold one converted
-// float number including padded zeros (dynamically created on stack)
-// default: 32 byte
-#ifndef PRINTF_FTOA_BUFFER_SIZE
-    #define PRINTF_FTOA_BUFFER_SIZE    32U
-#endif
-
-// support for the floating point type (%f)
-// default: activated
-#if !PRINTF_DISABLE_SUPPORT_FLOAT
-    #define PRINTF_SUPPORT_FLOAT
-#endif
-
-// support for exponential floating point notation (%e/%g)
-// default: activated
-#ifndef PRINTF_DISABLE_SUPPORT_EXPONENTIAL
-    #define PRINTF_SUPPORT_EXPONENTIAL
-#endif
-
-// define the default floating point precision
-// default: 6 digits
-#ifndef PRINTF_DEFAULT_FLOAT_PRECISION
-    #define PRINTF_DEFAULT_FLOAT_PRECISION 6U
-#endif
-
-// define the largest float suitable to print with %f
-// default: 1e9
-#ifndef PRINTF_MAX_FLOAT
-    #define PRINTF_MAX_FLOAT 1e9
-#endif
-
-// support for the long long types (%llu or %p)
-// default: activated
-#ifndef PRINTF_DISABLE_SUPPORT_LONG_LONG
-    #define PRINTF_SUPPORT_LONG_LONG
-#endif
-
-// support for the ptrdiff_t type (%t)
-// ptrdiff_t is normally defined in <stddef.h> as long or long long type
-// default: activated
-#ifndef PRINTF_DISABLE_SUPPORT_PTRDIFF_T
-    #define PRINTF_SUPPORT_PTRDIFF_T
-#endif
-
-///////////////////////////////////////////////////////////////////////////////
-
-// internal flag definitions
-#define FLAGS_ZEROPAD   (1U <<  0U)
-#define FLAGS_LEFT      (1U <<  1U)
-#define FLAGS_PLUS      (1U <<  2U)
-#define FLAGS_SPACE     (1U <<  3U)
-#define FLAGS_HASH      (1U <<  4U)
-#define FLAGS_UPPERCASE (1U <<  5U)
-#define FLAGS_CHAR      (1U <<  6U)
-#define FLAGS_SHORT     (1U <<  7U)
-#define FLAGS_LONG      (1U <<  8U)
-#define FLAGS_LONG_LONG (1U <<  9U)
-#define FLAGS_PRECISION (1U << 10U)
-#define FLAGS_ADAPT_EXP (1U << 11U)
-
-// import float.h for DBL_MAX
-#if defined(PRINTF_SUPPORT_FLOAT)
-    #include <float.h>
-#endif
-
-// output function type
-typedef void (*out_fct_type)(char character, void * buffer, size_t idx, size_t maxlen);
-
-// wrapper (used as buffer) for output function type
-typedef struct {
-    void (*fct)(char character, void * arg);
-    void * arg;
-} out_fct_wrap_type;
-
-// internal buffer output
-static inline void _out_buffer(char character, void * buffer, size_t idx, size_t maxlen)
-{
-    if(idx < maxlen) {
-        ((char *)buffer)[idx] = character;
-    }
-}
-
-// internal null output
-static inline void _out_null(char character, void * buffer, size_t idx, size_t maxlen)
-{
-    LV_UNUSED(character);
-    LV_UNUSED(buffer);
-    LV_UNUSED(idx);
-    LV_UNUSED(maxlen);
-}
-
-// internal secure strlen
-// \return The length of the string (excluding the terminating 0) limited by 'maxsize'
-static inline unsigned int _strnlen_s(const char * str, size_t maxsize)
-{
-    const char * s;
-    for(s = str; *s && maxsize--; ++s);
-    return (unsigned int)(s - str);
-}
-
-// internal test if char is a digit (0-9)
-// \return true if char is a digit
-static inline bool _is_digit(char ch)
-{
-    return (ch >= '0') && (ch <= '9');
-}
-
-// internal ASCII string to unsigned int conversion
-static unsigned int _atoi(const char ** str)
-{
-    unsigned int i = 0U;
-    while(_is_digit(**str)) {
-        i = i * 10U + (unsigned int)(*((*str)++) - '0');
-    }
-    return i;
-}
-
-// output the specified string in reverse, taking care of any zero-padding
-static size_t _out_rev(out_fct_type out, char * buffer, size_t idx, size_t maxlen, const char * buf, size_t len,
-                       unsigned int width, unsigned int flags)
-{
-    const size_t start_idx = idx;
-
-    // pad spaces up to given width
-    if(!(flags & FLAGS_LEFT) && !(flags & FLAGS_ZEROPAD)) {
-        size_t i;
-        for(i = len; i < width; i++) {
-            out(' ', buffer, idx++, maxlen);
-        }
-    }
-
-    // reverse string
-    while(len) {
-        out(buf[--len], buffer, idx++, maxlen);
-    }
-
-    // append pad spaces up to given width
-    if(flags & FLAGS_LEFT) {
-        while(idx - start_idx < width) {
-            out(' ', buffer, idx++, maxlen);
-        }
-    }
-
-    return idx;
-}
-
-// internal itoa format
-static 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)
-{
-    // pad leading zeros
-    if(!(flags & FLAGS_LEFT)) {
-        if(width && (flags & FLAGS_ZEROPAD) && (negative || (flags & (FLAGS_PLUS | FLAGS_SPACE)))) {
-            width--;
-        }
-        while((len < prec) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
-            buf[len++] = '0';
-        }
-        while((flags & FLAGS_ZEROPAD) && (len < width) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
-            buf[len++] = '0';
-        }
-    }
-
-    // handle hash
-    if(flags & FLAGS_HASH) {
-        if(!(flags & FLAGS_PRECISION) && len && ((len == prec) || (len == width))) {
-            len--;
-            if(len && (base == 16U)) {
-                len--;
-            }
-        }
-        if((base == 16U) && !(flags & FLAGS_UPPERCASE) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
-            buf[len++] = 'x';
-        }
-        else if((base == 16U) && (flags & FLAGS_UPPERCASE) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
-            buf[len++] = 'X';
-        }
-        else if((base == 2U) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
-            buf[len++] = 'b';
-        }
-        if(len < PRINTF_NTOA_BUFFER_SIZE) {
-            buf[len++] = '0';
-        }
-    }
-
-    if(len < PRINTF_NTOA_BUFFER_SIZE) {
-        if(negative) {
-            buf[len++] = '-';
-        }
-        else if(flags & FLAGS_PLUS) {
-            buf[len++] = '+';  // ignore the space if the '+' exists
-        }
-        else if(flags & FLAGS_SPACE) {
-            buf[len++] = ' ';
-        }
-    }
-
-    return _out_rev(out, buffer, idx, maxlen, buf, len, width, flags);
-}
-
-// internal itoa for 'long' type
-static 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)
-{
-    char buf[PRINTF_NTOA_BUFFER_SIZE];
-    size_t len = 0U;
-
-    // no hash for 0 values
-    if(!value) {
-        flags &= ~FLAGS_HASH;
-    }
-
-    // write if precision != 0 and value is != 0
-    if(!(flags & FLAGS_PRECISION) || value) {
-        do {
-            const char digit = (char)(value % base);
-            buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10;
-            value /= base;
-        } while(value && (len < PRINTF_NTOA_BUFFER_SIZE));
-    }
-
-    return _ntoa_format(out, buffer, idx, maxlen, buf, len, negative, (unsigned int)base, prec, width, flags);
-}
-
-// internal itoa for 'long long' type
-#if defined(PRINTF_SUPPORT_LONG_LONG)
-static 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)
-{
-    char buf[PRINTF_NTOA_BUFFER_SIZE];
-    size_t len = 0U;
-
-    // no hash for 0 values
-    if(!value) {
-        flags &= ~FLAGS_HASH;
-    }
-
-    // write if precision != 0 and value is != 0
-    if(!(flags & FLAGS_PRECISION) || value) {
-        do {
-            const char digit = (char)(value % base);
-            buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10;
-            value /= base;
-        } while(value && (len < PRINTF_NTOA_BUFFER_SIZE));
-    }
-
-    return _ntoa_format(out, buffer, idx, maxlen, buf, len, negative, (unsigned int)base, prec, width, flags);
-}
-#endif  // PRINTF_SUPPORT_LONG_LONG
-
-#if defined(PRINTF_SUPPORT_FLOAT)
-
-#if defined(PRINTF_SUPPORT_EXPONENTIAL)
-// forward declaration so that _ftoa can switch to exp notation for values > PRINTF_MAX_FLOAT
-static size_t _etoa(out_fct_type out, char * buffer, size_t idx, size_t maxlen, double value, unsigned int prec,
-                    unsigned int width, unsigned int flags);
-#endif
-
-// internal ftoa for fixed decimal floating point
-static 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)
-{
-    char buf[PRINTF_FTOA_BUFFER_SIZE];
-    size_t len  = 0U;
-    double diff = 0.0;
-
-    // powers of 10
-    static const double pow10[] = { 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000 };
-
-    // test for special values
-    if(value != value)
-        return _out_rev(out, buffer, idx, maxlen, "nan", 3, width, flags);
-    if(value < -DBL_MAX)
-        return _out_rev(out, buffer, idx, maxlen, "fni-", 4, width, flags);
-    if(value > DBL_MAX)
-        return _out_rev(out, buffer, idx, maxlen, (flags & FLAGS_PLUS) ? "fni+" : "fni", (flags & FLAGS_PLUS) ? 4U : 3U, width,
-                        flags);
-
-    // test for very large values
-    // standard printf behavior is to print EVERY whole number digit -- which could be 100s of characters overflowing your buffers == bad
-    if((value > PRINTF_MAX_FLOAT) || (value < -PRINTF_MAX_FLOAT)) {
-#if defined(PRINTF_SUPPORT_EXPONENTIAL)
-        return _etoa(out, buffer, idx, maxlen, value, prec, width, flags);
-#else
-        return 0U;
-#endif
-    }
-
-    // test for negative
-    bool negative = false;
-    if(value < 0) {
-        negative = true;
-        value = 0 - value;
-    }
-
-    // set default precision, if not set explicitly
-    if(!(flags & FLAGS_PRECISION)) {
-        prec = PRINTF_DEFAULT_FLOAT_PRECISION;
-    }
-    // limit precision to 9, cause a prec >= 10 can lead to overflow errors
-    while((len < PRINTF_FTOA_BUFFER_SIZE) && (prec > 9U)) {
-        buf[len++] = '0';
-        prec--;
-    }
-
-    int whole = (int)value;
-    double tmp = (value - whole) * pow10[prec];
-    unsigned long frac = (unsigned long)tmp;
-    diff = tmp - frac;
-
-    if(diff > 0.5) {
-        ++frac;
-        // handle rollover, e.g. case 0.99 with prec 1 is 1.0
-        if(frac >= pow10[prec]) {
-            frac = 0;
-            ++whole;
-        }
-    }
-    else if(diff < 0.5) {
-    }
-    else if((frac == 0U) || (frac & 1U)) {
-        // if halfway, round up if odd OR if last digit is 0
-        ++frac;
-    }
-
-    if(prec == 0U) {
-        diff = value - (double)whole;
-        if((!(diff < 0.5) || (diff > 0.5)) && (whole & 1)) {
-            // exactly 0.5 and ODD, then round up
-            // 1.5 -> 2, but 2.5 -> 2
-            ++whole;
-        }
-    }
-    else {
-        unsigned int count = prec;
-        // now do fractional part, as an unsigned number
-        while(len < PRINTF_FTOA_BUFFER_SIZE) {
-            --count;
-            buf[len++] = (char)(48U + (frac % 10U));
-            if(!(frac /= 10U)) {
-                break;
-            }
-        }
-        // add extra 0s
-        while((len < PRINTF_FTOA_BUFFER_SIZE) && (count-- > 0U)) {
-            buf[len++] = '0';
-        }
-        if(len < PRINTF_FTOA_BUFFER_SIZE) {
-            // add decimal
-            buf[len++] = '.';
-        }
-    }
-
-    // do whole part, number is reversed
-    while(len < PRINTF_FTOA_BUFFER_SIZE) {
-        buf[len++] = (char)(48 + (whole % 10));
-        if(!(whole /= 10)) {
-            break;
-        }
-    }
-
-    // pad leading zeros
-    if(!(flags & FLAGS_LEFT) && (flags & FLAGS_ZEROPAD)) {
-        if(width && (negative || (flags & (FLAGS_PLUS | FLAGS_SPACE)))) {
-            width--;
-        }
-        while((len < width) && (len < PRINTF_FTOA_BUFFER_SIZE)) {
-            buf[len++] = '0';
-        }
-    }
-
-    if(len < PRINTF_FTOA_BUFFER_SIZE) {
-        if(negative) {
-            buf[len++] = '-';
-        }
-        else if(flags & FLAGS_PLUS) {
-            buf[len++] = '+';  // ignore the space if the '+' exists
-        }
-        else if(flags & FLAGS_SPACE) {
-            buf[len++] = ' ';
-        }
-    }
-
-    return _out_rev(out, buffer, idx, maxlen, buf, len, width, flags);
-}
-
-#if defined(PRINTF_SUPPORT_EXPONENTIAL)
-// internal ftoa variant for exponential floating-point type, contributed by Martijn Jasperse <m.jasperse@gmail.com>
-static size_t _etoa(out_fct_type out, char * buffer, size_t idx, size_t maxlen, double value, unsigned int prec,
-                    unsigned int width, unsigned int flags)
-{
-    // check for NaN and special values
-    if((value != value) || (value > DBL_MAX) || (value < -DBL_MAX)) {
-        return _ftoa(out, buffer, idx, maxlen, value, prec, width, flags);
-    }
-
-    // determine the sign
-    const bool negative = value < 0;
-    if(negative) {
-        value = -value;
-    }
-
-    // default precision
-    if(!(flags & FLAGS_PRECISION)) {
-        prec = PRINTF_DEFAULT_FLOAT_PRECISION;
-    }
-
-    // determine the decimal exponent
-    // based on the algorithm by David Gay (https://www.ampl.com/netlib/fp/dtoa.c)
-    union {
-        uint64_t U;
-        double   F;
-    } conv;
-
-    conv.F = value;
-    int exp2 = (int)((conv.U >> 52U) & 0x07FFU) - 1023;           // effectively log2
-    conv.U = (conv.U & ((1ULL << 52U) - 1U)) | (1023ULL << 52U);  // drop the exponent so conv.F is now in [1,2)
-    // now approximate log10 from the log2 integer part and an expansion of ln around 1.5
-    int expval = (int)(0.1760912590558 + exp2 * 0.301029995663981 + (conv.F - 1.5) * 0.289529654602168);
-    // now we want to compute 10^expval but we want to be sure it won't overflow
-    exp2 = (int)(expval * 3.321928094887362 + 0.5);
-    const double z  = expval * 2.302585092994046 - exp2 * 0.6931471805599453;
-    const double z2 = z * z;
-    conv.U = (uint64_t)(exp2 + 1023) << 52U;
-    // compute exp(z) using continued fractions, see https://en.wikipedia.org/wiki/Exponential_function#Continued_fractions_for_ex
-    conv.F *= 1 + 2 * z / (2 - z + (z2 / (6 + (z2 / (10 + z2 / 14)))));
-    // correct for rounding errors
-    if(value < conv.F) {
-        expval--;
-        conv.F /= 10;
-    }
-
-    // the exponent format is "%+03d" and largest value is "307", so set aside 4-5 characters
-    unsigned int minwidth = ((expval < 100) && (expval > -100)) ? 4U : 5U;
-
-    // in "%g" mode, "prec" is the number of *significant figures* not decimals
-    if(flags & FLAGS_ADAPT_EXP) {
-        // do we want to fall-back to "%f" mode?
-        if((value >= 1e-4) && (value < 1e6)) {
-            if((int)prec > expval) {
-                prec = (unsigned)((int)prec - expval - 1);
-            }
-            else {
-                prec = 0;
-            }
-            flags |= FLAGS_PRECISION;   // make sure _ftoa respects precision
-            // no characters in exponent
-            minwidth = 0U;
-            expval   = 0;
-        }
-        else {
-            // we use one sigfig for the whole part
-            if((prec > 0) && (flags & FLAGS_PRECISION)) {
-                --prec;
-            }
-        }
-    }
-
-    // will everything fit?
-    unsigned int fwidth = width;
-    if(width > minwidth) {
-        // we didn't fall-back so subtract the characters required for the exponent
-        fwidth -= minwidth;
-    }
-    else {
-        // not enough characters, so go back to default sizing
-        fwidth = 0U;
-    }
-    if((flags & FLAGS_LEFT) && minwidth) {
-        // if we're padding on the right, DON'T pad the floating part
-        fwidth = 0U;
-    }
-
-    // rescale the float value
-    if(expval) {
-        value /= conv.F;
-    }
-
-    // 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);
-
-    // output the exponent part
-    if(minwidth) {
-        // output the exponential symbol
-        out((flags & FLAGS_UPPERCASE) ? '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) {
-            while(idx - start_idx < width) out(' ', buffer, idx++, maxlen);
-        }
-    }
-    return idx;
-}
-#endif  // PRINTF_SUPPORT_EXPONENTIAL
-#endif  // PRINTF_SUPPORT_FLOAT
-
-// internal vsnprintf
-static int _vsnprintf(out_fct_type out, char * buffer, const size_t maxlen, const char * format, va_list 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_arg(va, int);
-            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 == '*') {
-                const int prec = (int)va_arg(va, int);
-                precision = prec > 0 ? (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;
-#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 'p' :
-            case 'P' :
-            case 'o' :
-            case 'b' : {
-                    // set the base
-                    unsigned int base;
-                    if(*format == 'x' || *format == 'X') {
-                        base = 16U;
-                    }
-                    else if(*format == 'p' || *format == 'P') {
-                        base = 16U;
-                        flags |= FLAGS_HASH;   // always hash for pointer format
-#if defined(PRINTF_SUPPORT_LONG_LONG)
-                        if(sizeof(uintptr_t) == sizeof(long long))
-                            flags |= FLAGS_LONG_LONG;
-                        else
-#endif
-                            flags |= FLAGS_LONG;
-
-                        if(*(format + 1) == 'V')
-                            format++;
-                    }
-                    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' || *format == 'P') {
-                        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) {
-                        flags &= ~FLAGS_ZEROPAD;
-                    }
-
-                    // 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_arg(va, long long);
-                            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_arg(va, long);
-                            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_arg(va, int) : (flags & FLAGS_SHORT) ? (short int)va_arg(va,
-                                                                                                                                       int) : va_arg(va, int);
-                            idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned int)(value > 0 ? value : 0 - value), value < 0, base, precision,
-                                             width, flags);
-                        }
-                    }
-                    else if(*format == 'V') {
-                        lv_vaformat_t * vaf = va_arg(va, lv_vaformat_t *);
-                        va_list copy;
-
-                        va_copy(copy, *vaf->va);
-                        idx += _vsnprintf(out, buffer + idx, maxlen - idx, vaf->fmt, copy);
-                        va_end(copy);
-                    }
-                    else {
-                        // unsigned
-                        if(flags & FLAGS_LONG_LONG) {
-#if defined(PRINTF_SUPPORT_LONG_LONG)
-                            idx = _ntoa_long_long(out, buffer, idx, maxlen, va_arg(va, unsigned long long), false, base, precision, width, flags);
-#endif
-                        }
-                        else if(flags & FLAGS_LONG) {
-                            idx = _ntoa_long(out, buffer, idx, maxlen, va_arg(va, unsigned long), false, base, precision, width, flags);
-                        }
-                        else {
-                            const unsigned int value = (flags & FLAGS_CHAR) ? (unsigned char)va_arg(va,
-                                                                                                    unsigned int) : (flags & FLAGS_SHORT) ? (unsigned short int)va_arg(va, unsigned int) : va_arg(va, unsigned int);
-                            idx = _ntoa_long(out, buffer, idx, maxlen, value, false, base, precision, width, flags);
-                        }
-                    }
-                    format++;
-                    break;
-                }
-#if defined(PRINTF_SUPPORT_FLOAT)
-            case 'f' :
-            case 'F' :
-                if(*format == 'F') flags |= FLAGS_UPPERCASE;
-                idx = _ftoa(out, buffer, idx, maxlen, va_arg(va, double), precision, width, flags);
-                format++;
-                break;
-#if defined(PRINTF_SUPPORT_EXPONENTIAL)
-            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, va_arg(va, double), precision, width, flags);
-                format++;
-                break;
-#endif  // PRINTF_SUPPORT_EXPONENTIAL
-#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_arg(va, int), buffer, idx++, maxlen);
-                    // post padding
-                    if(flags & FLAGS_LEFT) {
-                        while(l++ < width) {
-                            out(' ', buffer, idx++, maxlen);
-                        }
-                    }
-                    format++;
-                    break;
-                }
-
-            case 's' : {
-                    const char * p = va_arg(va, char *);
-                    unsigned int l = _strnlen_s(p, precision ? precision : (size_t) -1);
-                    // 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 '%' :
-                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;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-int lv_snprintf(char * buffer, size_t count, const char * format, ...)
-{
-    va_list va;
-    va_start(va, format);
-    const int ret = _vsnprintf(_out_buffer, buffer, count, format, va);
-    va_end(va);
-    return ret;
-}
-
-int lv_vsnprintf(char * buffer, size_t count, const char * format, va_list va)
-{
-    return _vsnprintf(_out_buffer, buffer, count, format, va);
-}
-
-#endif /*LV_SPRINTF_CUSTOM*/