1 files changed, 0 insertions, 124 deletions
diff --git a/src/cmd/fix/osopen.go b/src/cmd/fix/osopen.go
deleted file mode 100644
index af2796ac2..000000000
--- a/src/cmd/fix/osopen.go
+++ /dev/null
@@ -1,124 +0,0 @@
-// Copyright 2011 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 (
-	"go/ast"
-)
-
-func init() {
-	register(osopenFix)
-}
-
-var osopenFix = fix{
-	"osopen",
-	"2011-04-04",
-	osopen,
-	`Adapt os.Open calls to new, easier API and rename O_CREAT O_CREATE.
-
-http://codereview.appspot.com/4357052
-`,
-}
-
-func osopen(f *ast.File) bool {
-	if !imports(f, "os") {
-		return false
-	}
-
-	fixed := false
-	walk(f, func(n interface{}) {
-		// Rename O_CREAT to O_CREATE.
-		if expr, ok := n.(ast.Expr); ok && isPkgDot(expr, "os", "O_CREAT") {
-			expr.(*ast.SelectorExpr).Sel.Name = "O_CREATE"
-			fixed = true
-			return
-		}
-
-		// Fix up calls to Open.
-		call, ok := n.(*ast.CallExpr)
-		if !ok || len(call.Args) != 3 {
-			return
-		}
-		if !isPkgDot(call.Fun, "os", "Open") {
-			return
-		}
-		sel := call.Fun.(*ast.SelectorExpr)
-		args := call.Args
-		// os.Open(a, os.O_RDONLY, c) -> os.Open(a)
-		if isPkgDot(args[1], "os", "O_RDONLY") || isPkgDot(args[1], "syscall", "O_RDONLY") {
-			call.Args = call.Args[0:1]
-			fixed = true
-			return
-		}
-		// os.Open(a, createlike_flags, c) -> os.Create(a, c)
-		if isCreateFlag(args[1]) {
-			sel.Sel.Name = "Create"
-			if !isSimplePerm(args[2]) {
-				warn(sel.Pos(), "rewrote os.Open to os.Create with permission not 0666")
-			}
-			call.Args = args[0:1]
-			fixed = true
-			return
-		}
-		// Fallback: os.Open(a, b, c) -> os.OpenFile(a, b, c)
-		sel.Sel.Name = "OpenFile"
-		fixed = true
-	})
-	return fixed
-}
-
-func isCreateFlag(flag ast.Expr) bool {
-	foundCreate := false
-	foundTrunc := false
-	// OR'ing of flags: is O_CREATE on?  + or | would be fine; we just look for os.O_CREATE
-	// and don't worry about the actual operator.
-	p := flag.Pos()
-	for {
-		lhs := flag
-		expr, isBinary := flag.(*ast.BinaryExpr)
-		if isBinary {
-			lhs = expr.Y
-		}
-		sel, ok := lhs.(*ast.SelectorExpr)
-		if !ok || !isTopName(sel.X, "os") {
-			return false
-		}
-		switch sel.Sel.Name {
-		case "O_CREATE":
-			foundCreate = true
-		case "O_TRUNC":
-			foundTrunc = true
-		case "O_RDONLY", "O_WRONLY", "O_RDWR":
-			// okay 
-		default:
-			// Unexpected flag, like O_APPEND or O_EXCL.
-			// Be conservative and do not rewrite.
-			return false
-		}
-		if !isBinary {
-			break
-		}
-		flag = expr.X
-	}
-	if !foundCreate {
-		return false
-	}
-	if !foundTrunc {
-		warn(p, "rewrote os.Open with O_CREATE but not O_TRUNC to os.Create")
-	}
-	return foundCreate
-}
-
-func isSimplePerm(perm ast.Expr) bool {
-	basicLit, ok := perm.(*ast.BasicLit)
-	if !ok {
-		return false
-	}
-	switch basicLit.Value {
-	case "0666":
-		return true
-	}
-	return false
-}