rot13, demo app for StreamApp, is working :)

1 files changed, 30 insertions, 0 deletions

diff --git a/Source/Applications/Shell/Applets/rot13.cpp b/Source/Applications/Shell/Applets/rot13.cpp
new file mode 100644
index 0000000..79c2124
--- /dev/null
+++ b/Source/Applications/Shell/Applets/rot13.cpp
@@ -0,0 +1,30 @@
+#include <App/StreamApp.proto.h>
+
+class rot13 : public StreamApp {
+	public:
+	rot13() : StreamApp("rot13", "Cat a file, but ROT13 it") {}
+	int run();
+};
+
+APP(rot13);
+
+int rot13::run() {
+	while (!in->eof()) {
+		String s = in->get();
+		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;
+			}
+		}
+		if (in->eof() && s.empty()) break;
+		*out << s << ENDL;
+	}
+	return 0;
+}
+