Added "negative test driver" - a short program that displayes lines from utf8_invalid.txt that

contain invalid utf-8 sequences


git-svn-id: http://svn.code.sf.net/p/utfcpp/code@4 a809a056-fc17-0410-9590-b4f493f8b08e

test_drivers/negative/negative.cpp

@@ -0,0 +1,33 @@
+#include "../../source/utf8.h"
+using namespace utf8;
+
+#include <string>
+#include <iostream>
+#include <fstream>
+using namespace std;
+
+const char* TEST_FILE_PATH = "../../test_data/negative/utf8_invalid.txt";
+
+int main()
+{
+    // Open the test file
+    ifstream fs8(TEST_FILE_PATH);
+    if (!fs8.is_open()) {
+    cout << "Could not open " << TEST_FILE_PATH << endl;
+    return 0;
+    }
+
+    // Read it line by line
+    unsigned int line_count = 0;
+    char byte;
+    while (!fs8.eof()) {
+        string line;
+        while ((byte = fs8.get()) != '\n' && !fs8.eof()) 
+	    line.push_back(byte);
+
+        line_count++;
+	// Print out lines that contain invalid UTF-8
+	if (!is_valid(line.begin(), line.end()))
+            cout << line_count << ": " << line << '\n';
+    }
+}