2/20/2023 0 Comments Unicode to utf 8 converterOn Windows to get to UTF-8 from UTF-16 LE one needs to simply call the function WideCharToMultyByte() with the first parameter set to CP_UTF8 (65001) instead of CP_ACP (0).Īnd be very careful to allocate a large enough buffer for the returned UTF-8 string. Converting Unicode strings to bytes is quite common these days because it is necessary to convert strings to bytes to process files or machine learning. So if your LabVIEW was running on on a modern Linux system you theoretically would already use UTF-8 The first 128 characters in the ASCII table map exactly to the first 128 characters in the Unicode standard. On the user level it uses UTF-8 which is in fact also a MBCS encoding where a single character point can consist of 1 to 4 bytes. Linux uses nowadays internally mostly UTF-32 (LE or BE) depending on the endianess of the CPU but with most user systems nowadays running on x86/64 or ARM this is usually also LE. But Asian and Arabian codepages can define more than 256 characters and then a single character suddenly consists of multiple bytes even in LabVIEW. For most Windows codepages this means an extended ASCII code page with the lower 128 character codes mapped to the standard 7-bit ASCII characters and the upper 128 character points mapped to code page specific characters. And LabVIEW therefore does not really use ASCII but 8-bit MBCS. For isunknown8bitTRUE, if a string is declared to be neither in ASCII nor in UTF-8, then all byte codes > 127 are replaced with the Unicode REPLACEMENT. Windows NT uses internally everywhere UTF-16 LE, while translating it to 8-bit MBCS on demand for applications that don't use Unicode such as LabVIEW. if one of the two UConverters is a UTF-8 converter. The macros handle many cases inline, but call internal functions for complicated parts of the UTF-8 encoding form. You also have UTF-8 and UTF-32 and for the 16 and 32 bit versions both an LE and BE version. unicode/utf8.h defines macros for UTF-8 with semantics parallel to the UTF-16 macros in unicode/utf16.h. And no, Unicode ist not UTF-16, but UTF-16 LE (little endian) is de Unicode version used on Windows. Actually ASCII is a VERY LIMITED subset of Unicode.
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