123 lines
3.2 KiB
C
123 lines
3.2 KiB
C
//
|
|
// Created by xemon on 10.09.22.
|
|
//
|
|
|
|
#include "AsciiStringParsingUtils.h"
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
uint8_t iAsciiStringParseCharToDecimalInt(char symbol) {
|
|
return (symbol - '0'); // return overvalue if not a decimal number
|
|
}
|
|
|
|
uint8_t iAsciiStringParseHexCharToInt(char symbol) {
|
|
if (symbol >= '0' && symbol <= '9') {
|
|
return iAsciiStringParseCharToDecimalInt(symbol);
|
|
} else if (symbol >= 'a' && symbol <= 'f') {
|
|
return 0xA + symbol - 'a';
|
|
} else if (symbol >= 'A' && symbol <= 'F') {
|
|
return 0xA + (symbol - 'A');
|
|
} else {
|
|
return 0x10; //not a hex number, return overvalue
|
|
}
|
|
}
|
|
|
|
|
|
uint8_t iAsciiStringParseHexByte(const char *str) {
|
|
return iAsciiStringParseHexCharToInt(*str) * 0x10 + iAsciiStringParseHexCharToInt(*(str + 1));
|
|
}
|
|
|
|
size_t iAsciiStringParseHexBytes(uint8_t *bytesData, char *str, size_t stringLen) {
|
|
char *end = str + stringLen;
|
|
|
|
size_t dataLen = stringLen / 2;
|
|
|
|
while (end > str) {
|
|
|
|
*bytesData = iAsciiStringParseHexByte(str);
|
|
|
|
str += 2;
|
|
++bytesData;
|
|
}
|
|
|
|
return dataLen;
|
|
}
|
|
|
|
uint64_t iAsciiStringParseUIntDecimalNumberWhitEnd(char **str, const char *strEnd) {
|
|
|
|
|
|
uint32_t value = 0;
|
|
uint8_t digit;
|
|
|
|
while ((*str) < strEnd) {
|
|
digit = iAsciiStringParseCharToDecimalInt(**str);
|
|
if (digit > 9) {
|
|
return value;
|
|
} else {
|
|
value = (value * 10) + digit;
|
|
}
|
|
++(*str);
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
int64_t iAsciiStringParseSignedLongDecimalNumber(char *str, const char *strEnd) {
|
|
int8_t sign = 1;
|
|
if (*str == '-') {
|
|
sign = -1;
|
|
++str;
|
|
}
|
|
|
|
return iAsciiStringParseUIntDecimalNumberWhitEnd(&str, strEnd) * sign;
|
|
}
|
|
|
|
uint64_t iAsciiStringParseUnsignedLongDecimalNumber(char *str, const char *strEnd) {
|
|
return iAsciiStringParseUIntDecimalNumberWhitEnd(&str, strEnd);
|
|
}
|
|
|
|
|
|
char *xAsciiStringSkipChar(char *utcString, char const *utcStringEnd, char symbol) {
|
|
while ((utcString < utcStringEnd) && (*utcString == symbol)) {
|
|
++utcString;
|
|
}
|
|
return utcString;
|
|
}
|
|
|
|
char *xAsciiStringSeekChar(char *utcString, char const *utcStringEnd, char symbol) {
|
|
while ((utcString < utcStringEnd) && (*utcString != symbol)) {
|
|
++utcString;
|
|
}
|
|
return utcString;
|
|
}
|
|
|
|
double dAsciiStringParseDouble(char *str, const char *strEnd) {
|
|
double sign = 1;
|
|
if (str[0] == '-') {
|
|
sign = -1;
|
|
++str;
|
|
}
|
|
char *dividerSymbol = xAsciiStringSeekChar(str, strEnd, '.');
|
|
|
|
double result = iAsciiStringParseUnsignedLongDecimalNumber(str, dividerSymbol);
|
|
|
|
if (dividerSymbol < (strEnd - 1)) {
|
|
++dividerSymbol;
|
|
char *fractionalStr = dividerSymbol;
|
|
double fractional = iAsciiStringParseUIntDecimalNumberWhitEnd(&fractionalStr, strEnd);
|
|
|
|
for (; dividerSymbol < fractionalStr; ++dividerSymbol) {
|
|
fractional /= 10;
|
|
}
|
|
result += fractional;
|
|
}
|
|
|
|
|
|
return result * sign;
|
|
}
|
|
|
|
uint8_t iAsciiStringMoveToNextParsingBlock(char **blockBeginPos, char **blockDividerPos, char *strEnd, char divider) {
|
|
*blockBeginPos = xAsciiStringSkipSpace((*blockDividerPos + 1), strEnd);
|
|
*blockDividerPos = xAsciiStringSeekChar(*blockBeginPos, strEnd, divider);
|
|
return *blockDividerPos - *blockBeginPos; //return block length
|
|
} |