From 64bd9053a25297f7a442ca831c7da5b44bd33f84 Mon Sep 17 00:00:00 2001 From: jacqueline Date: Wed, 12 Jun 2024 17:54:40 +1000 Subject: Update LVGL to v9.1.0 --- lib/lvgl/src/misc/lv_printf.c | 879 ------------------------------------------ 1 file changed, 879 deletions(-) delete mode 100644 lib/lvgl/src/misc/lv_printf.c (limited to 'lib/lvgl/src/misc/lv_printf.c') 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 - -#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 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 -#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 -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*/ -- cgit v1.2.3