C++国际化 UTF-8 CPP

     一个处理UTF-8编码字符串的简单、小巧、跨平台的泛型库。    <pre class="brush:cpp; toolbar: true; auto-links: false;">#include <fstream> #include <iostream> #include <string> #include <vector> #include "utf8.h" using namespace std; int main(int argc, char** argv) {     if (argc != 2) {         cout << "\nUsage: docsample filename\n";         return 0;     }      const char* test_file_path = argv[1];     // Open the test file (contains UTF-8 encoded text)     ifstream fs8(test_file_path);     if (!fs8.is_open()) {     cout << "Could not open " << test_file_path << endl;     return 0;     }      unsigned line_count = 1;     string line;     // Play with all the lines in the file     while (getline(fs8, line)) {        // check for invalid utf-8 (for a simple yes/no check, there is also utf8::is_valid function)         string::iterator end_it = utf8::find_invalid(line.begin(), line.end());         if (end_it != line.end()) {             cout << "Invalid UTF-8 encoding detected at line " << line_count << "\n";             cout << "This part is fine: " << string(line.begin(), end_it) << "\n";         }          // Get the line length (at least for the valid part)         int length = utf8::distance(line.begin(), end_it);         cout << "Length of line " << line_count << " is " << length <<  "\n";          // Convert it to utf-16         vector<unsigned short> utf16line;         utf8::utf8to16(line.begin(), end_it, back_inserter(utf16line));          // And back to utf-8         string utf8line;          utf8::utf16to8(utf16line.begin(), utf16line.end(), back_inserter(utf8line));          // Confirm that the conversion went OK:         if (utf8line != string(line.begin(), end_it))             cout << "Error in UTF-16 conversion at line: " << line_count << "\n";                  line_count++;     }     return 0; }</pre>    <p><strong>项目主页：</strong><a href="http://www.open-open.com/lib/view/home/1327497447953" target="_blank">http://www.open-open.com/lib/view/home/1327497447953</a></p>