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65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
#include "../source/utf8.h"
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#include <iostream>
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#include <fstream>
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#include <string>
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#include <vector>
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using namespace std;
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int main(int argc, char** argv)
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{
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if (argc != 2) {
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cout << "\nUsage: docsample filename\n";
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return 0;
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}
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const char* test_file_path = argv[1];
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// Open the test file (must be UTF-8 encoded)
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ifstream fs8(test_file_path);
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if (!fs8.is_open()) {
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cout << "Could not open " << test_file_path << endl;
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return 0;
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}
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unsigned line_count = 1;
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string line;
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// Play with all the lines in the file
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while (getline(fs8, line)) {
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// check for invalid utf-8 (for a simple yes/no check, there is also utf8::is_valid function)
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#if __cplusplus >= 201103L // C++ 11 or later
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auto end_it = utf8::find_invalid(line.begin(), line.end());
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#else
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string::iterator end_it = utf8::find_invalid(line.begin(), line.end());
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#endif // C++ 11
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if (end_it != line.end()) {
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cout << "Invalid UTF-8 encoding detected at line " << line_count << "\n";
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cout << "This part is fine: " << string(line.begin(), end_it) << "\n";
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}
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// Get the line length (at least for the valid part)
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ptrdiff_t length = utf8::distance(line.begin(), end_it);
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cout << "Length of line " << line_count << " is " << length << "\n";
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// Convert it to utf-16
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#if __cplusplus >= 201103L // C++ 11 or later
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u16string utf16line = utf8::utf8to16(line);
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#else
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vector<unsigned short> utf16line;
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utf8::utf8to16(line.begin(), end_it, back_inserter(utf16line));
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#endif // C++ 11
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// And back to utf-8;
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#if __cplusplus >= 201103L // C++ 11 or later
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string utf8line = utf8::utf16to8(utf16line);
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#else
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string utf8line;
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utf8::utf16to8(utf16line.begin(), utf16line.end(), back_inserter(utf8line));
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#endif // C++ 11
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// Confirm that the conversion went OK:
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if (utf8line != string(line.begin(), end_it))
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cout << "Error in UTF-16 conversion at line: " << line_count << "\n";
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line_count++;
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}
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return 0;
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}
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