1 files changed, 0 insertions, 90 deletions
diff --git a/doc/progs/cat_rot13.go b/doc/progs/cat_rot13.go
deleted file mode 100644
index 0eefe7cfc..000000000
--- a/doc/progs/cat_rot13.go
+++ /dev/null
@@ -1,90 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package main
-
-import (
-	"./file"
-	"flag"
-	"fmt"
-	"os"
-)
-
-var rot13Flag = flag.Bool("rot13", false, "rot13 the input")
-
-func rot13(b byte) byte {
-	if 'a' <= b && b <= 'z' {
-		b = 'a' + ((b-'a')+13)%26
-	}
-	if 'A' <= b && b <= 'Z' {
-		b = 'A' + ((b-'A')+13)%26
-	}
-	return b
-}
-
-type reader interface {
-	Read(b []byte) (ret int, err os.Error)
-	String() string
-}
-
-type rotate13 struct {
-	source reader
-}
-
-func newRotate13(source reader) *rotate13 {
-	return &rotate13{source}
-}
-
-func (r13 *rotate13) Read(b []byte) (ret int, err os.Error) {
-	r, e := r13.source.Read(b)
-	for i := 0; i < r; i++ {
-		b[i] = rot13(b[i])
-	}
-	return r, e
-}
-
-func (r13 *rotate13) String() string {
-	return r13.source.String()
-}
-// end of rotate13 implementation
-
-func cat(r reader) {
-	const NBUF = 512
-	var buf [NBUF]byte
-
-	if *rot13Flag {
-		r = newRotate13(r)
-	}
-	for {
-		switch nr, er := r.Read(buf[:]); {
-		case nr < 0:
-			fmt.Fprintf(os.Stderr, "cat: error reading from %s: %s\n", r.String(), er.String())
-			os.Exit(1)
-		case nr == 0: // EOF
-			return
-		case nr > 0:
-			nw, ew := file.Stdout.Write(buf[0:nr])
-			if nw != nr {
-				fmt.Fprintf(os.Stderr, "cat: error writing from %s: %s\n", r.String(), ew.String())
-				os.Exit(1)
-			}
-		}
-	}
-}
-
-func main() {
-	flag.Parse() // Scans the arg list and sets up flags
-	if flag.NArg() == 0 {
-		cat(file.Stdin)
-	}
-	for i := 0; i < flag.NArg(); i++ {
-		f, err := file.Open(flag.Arg(i))
-		if f == nil {
-			fmt.Fprintf(os.Stderr, "cat: can't open %s: error %s\n", flag.Arg(i), err)
-			os.Exit(1)
-		}
-		cat(f)
-		f.Close()
-	}
-}