1 files changed, 34 insertions, 0 deletions
diff --git a/reader.py b/reader.py
new file mode 100644
index 0000000..45d155c
--- /dev/null
+++ b/reader.py
@@ -0,0 +1,34 @@
+class Reader:
+    def __init__(self, filename):
+        self.filename = filename
+        self._file    = None
+        self.lineno   = 0
+        self.charno   = 0
+
+    def __enter__(self):
+        self._file = open(self.filename, "r")
+        return self
+
+    def __exit__(self, type, value, tb):
+        self._file.close()
+
+    def char(self):
+        ch = self._file.read(1)
+        self.charno += 1
+        if ch == "\n":
+            self.lineno += 1
+            self.charno = 0
+        return ch
+
+    def peek(self):
+        pos = self._file.tell()
+        ch = self._file.read(1)
+        self._file.seek(pos)
+        return ch
+
+
+if __name__ == "__main__":
+    with Reader("reader.py") as src:
+        print(src.peek())
+        while src.peek() != "":
+            print(src.char())