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convert latin1 chars to utf8

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This commit is contained in:
MichaelDvP
2025-10-22 17:24:20 +02:00
parent 09c750e622
commit 6fb8fbba18
4 changed files with 101 additions and 13 deletions
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85
src/core/helpers.cpp
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@@ -381,6 +381,91 @@ char * Helpers::render_value(char * result, const uint32_t value, const int8_t f
return result;
}
// convert special Latin1 characters to UTF8
char * Helpers::render_string(char * result, const char * c, const uint8_t len) {
char * p = result;
while (*c != '\0' && (p - result < len)) {
switch (*c) {
case 0xC4: // Ä
*p = 0xC3;
*(++p) = 0x84;
break;
case 0xD6: // Ö
*p = 0xC3;
*(++p) = 0x96;
break;
case 0xDC: // Ü
*p = 0xC3;
*(++p) = 0x9C;
break;
case 0xDF: // ß
*p = 0xC3;
*(++p) = 0x9F;
break;
case 0xE4: // ä
*p = 0xC3;
*(++p) = 0xA4;
break;
case 0xF6: // ö
*p = 0xC3;
*(++p) = 0xB6;
break;
case 0xFC: // ü
*p = 0xC3;
*(++p) = 0xBC;
break;
default:
*p = (*c & 0x80) ? '?' : *c;
break;
}
c++;
p++;
}
*p = '\0'; // terminat result
return result;
}
char * Helpers::utf8tolatin1(char * result, const char * c, const uint8_t len) {
char * p = result;
while (*c != '\0' && (p - result < len)) {
if (*c == 0xC3) {
c++;
switch (*c) {
case 0x84: // Ä
*p = 0xC4;
break;
case 0x96: // Ö
*p = 0xD6;
break;
case 0x9C: // Ü
*p = 0xDC;
break;
case 0x9F: // ß
*p = 0xDF;
break;
case 0xA4: // ä
*p = 0xE4;
break;
case 0xB6: // ö
*p = 0xF6;
break;
case 0xBC: // ü
*p = 0xFC;
break;
default:
break;
}
} else if (*c > 127) {
*p = '?';
} else {
*p = *c;
}
c++;
p++;
}
*p = '\0'; // terminat result
return result;
}
// creates string of hex values from an array of bytes
std::string Helpers::data_to_hex(const uint8_t * data, const uint8_t length) {
if (length == 0) {