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Add non-normalized input and bidirectional conversion support to UTF-8 engine

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FeralChild64 2023-04-17 22:41:14 +02:00 • committed by kcgen
parent 5db721b930
commit 608ca8fb78
8 changed files with 547 additions and 270 deletions
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26
include/string_utils.h
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@ -293,23 +293,23 @@ std::string join_with_commas(const std::vector<std::string>& items,
// Clear the language if it's set to the POSIX default
void clear_language_if_default(std::string &language);
// UTF-8 support
// Get recommended DOS code page to render the UTF-8 strings to. This
// might not be the code page set using KEYB command, for example due
// to emulated hardware limitations, or duplicated code page numbers
uint16_t UTF8_GetCodePage();
uint16_t get_utf8_code_page();
// Convert the UTF-8 string (NFC normalized, otherwise some national
// characters might remain unrecognized) to a format intended for
// display inside emulated environment.
// Code page '0' means a pure 7-bit ASCII.
// Return value 'false' means there were problems with string
// decoding/rendering, but the overall output should be still sane
bool UTF8_RenderForDos(const std::string &str_in,
std::string &str_out,
const uint16_t code_page = 0);
// Convert the UTF-8 string to the format intended for display inside emulated
// environment. Code page '0' means a pure 7-bit ASCII. Function without
// code_page parameter uses current DOS code page.
// Return value 'false' means there were problems with string decoding or
// rendering, but the overall output should still be sane.
bool utf8_to_dos(const std::string& str_in, std::string& str_out);
bool utf8_to_dos(const std::string& str_in, std::string& str_out,
const uint16_t code_page);
// Similarly, convert the opposite way
void dos_to_utf8(const std::string& str_in, std::string& str_out);
void dos_to_utf8(const std::string& str_in, std::string& str_out,
const uint16_t code_page);
// Parse a value from the string, clamp the result within the given min and max
// values, and return it as a float. This API should give us enough numerical