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add hex_decode() to String

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bendn 2023-03-06 10:17:33 +07:00
parent 44d539465a
commit ca0feabbb0
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6 changed files with 88 additions and 0 deletions
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29
core/string/ustring.cpp
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@ -1644,6 +1644,35 @@ String String::hex_encode_buffer(const uint8_t *p_buffer, int p_len) {
return ret;
}
Vector<uint8_t> String::hex_decode() const {
ERR_FAIL_COND_V_MSG(length() % 2 != 0, Vector<uint8_t>(), "Hexadecimal string of uneven length.");
#define HEX_TO_BYTE(m_output, m_index) \
uint8_t m_output; \
c = operator[](m_index); \
if (is_digit(c)) { \
m_output = c - '0'; \
} else if (c >= 'a' && c <= 'f') { \
m_output = c - 'a' + 10; \
} else if (c >= 'A' && c <= 'F') { \
m_output = c - 'A' + 10; \
} else { \
ERR_FAIL_V_MSG(Vector<uint8_t>(), "Invalid hexadecimal character \"" + chr(c) + "\" at index " + m_index + "."); \
}
Vector<uint8_t> out;
int len = length() / 2;
out.resize(len);
for (int i = 0; i < len; i++) {
char32_t c;
HEX_TO_BYTE(first, i * 2);
HEX_TO_BYTE(second, i * 2 + 1);
out.write[i] = first * 16 + second;
}
return out;
#undef HEX_TO_BYTE
}
void String::print_unicode_error(const String &p_message, bool p_critical) const {
if (p_critical) {
print_error(vformat("Unicode parsing error, some characters were replaced with spaces: %s", p_message));