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What's the simplest way to convert a Unicode codepoint into a UTF-8 byte sequence in C? The only way that springs to mind is using iconv to map from the UTF-32LE codepage to UTF-8, but that seems like overkill.
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UTF-8 is an encoding system for Unicode. It can translate any Unicode character to a matching unique binary string, and can also translate the binary string back to a Unicode character. This is the meaning of “UTF”, or “Unicode Transformation Format.”
UTF-8 is based on 8-bit code units. Each character is encoded as 1 to 4 bytes. The first 128 Unicode code points are encoded as 1 byte in UTF-8.
UTF-8 is capable of encoding all 1,112,064 valid character code points in Unicode using one to four one-byte (8-bit) code units.
They are sometimes called surrogates but they are not characters. They don't mean anything by themselves. UTF-8 code units are 8 bits. UTF-8 encodes several distinct ranges of codepoints in one to four code units, respectively.
Unicode conversion is not a simple task. Using iconv doesn't seem like overkill at all to me. Perhaps there is a library version of iconv you can use to avoid make a system() call, if that's what you want to avoid.
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