utf8rewind是跨平台的开源C库，扩展默认的字符串处理函数，支持UTF-8编码文本。
示例：
#include "utf8rewind.h" int main(int argc, char** argv) { const char* input = "Hello World!"; static const size_t output_size = 256; char output[output_size]; wchar_t output_wide[output_size]; const char* input_seek; size_t converted_size; int32_t errors; memset(output, 0, output_size * sizeof(char)); memset(output_wide, 0, output_size * sizeof(wchar_t)); /* Convert input to uppercase: "Hello World!" -> "HELLO WORLD!" */ converted_size = utf8toupper( input, strlen(input), output, output_size - 1, &errors); if (converted_size == 0 || errors != UTF8_ERR_NONE) { return -1; } /* Convert UTF-8 input to wide (UTF-16 or UTF-32) encoded text: "HELLO WORLD!" -> L"HELLO WORLD!" */ converted_size = utf8towide( output, strlen(output), output_wide, (output_size - 1) * sizeof(wchar_t), &errors); if (converted_size == 0 || errors != UTF8_ERR_NONE) { return -1; } /* Seek in input: Hello World!" -> "World!" */ input_seek = utf8seek(input, input, 6, SEEK_SET); return 0; }
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