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#include <App/StreamApp.proto.h>
class rot13 : public StreamApp {
public:
rot13() : StreamApp("cat", "Concatenate some input files") {
addFlag("r", "rot13", "Apply a ROT13 encryption to the output", FT_BOOL, "");
}
int run();
};
APP(rot13);
int rot13::run() {
while (!in->eof()) {
String s = in->get();
if (in->eof() && s.empty()) break;
if (bFlag("rot13")) {
for (u32int i = 0; i < s.size(); i++) {
WChar &c = s[i];
if (c >= WChar('A') and c <= WChar('Z')) {
c += 13;
if (c > WChar('Z')) c -= 26;
}
if (c >= WChar('a') and c <= WChar('z')) {
c += 13;
if (c > WChar('z')) c -= 26;
}
}
}
*out << s << ENDL;
}
return 0;
}
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