1 files changed, 110 insertions, 0 deletions
diff --git a/src/cmd/cgo/util.go b/src/cmd/cgo/util.go
new file mode 100644
index 000000000..e79b0e1bf
--- /dev/null
+++ b/src/cmd/cgo/util.go
@@ -0,0 +1,110 @@
+// 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 (
+	"exec"
+	"fmt"
+	"go/token"
+	"io/ioutil"
+	"os"
+)
+
+// run runs the command argv, feeding in stdin on standard input.
+// It returns the output to standard output and standard error.
+// ok indicates whether the command exited successfully.
+func run(stdin []byte, argv []string) (stdout, stderr []byte, ok bool) {
+	cmd, err := exec.LookPath(argv[0])
+	if err != nil {
+		fatalf("exec %s: %s", argv[0], err)
+	}
+	r0, w0, err := os.Pipe()
+	if err != nil {
+		fatalf("%s", err)
+	}
+	r1, w1, err := os.Pipe()
+	if err != nil {
+		fatalf("%s", err)
+	}
+	r2, w2, err := os.Pipe()
+	if err != nil {
+		fatalf("%s", err)
+	}
+	p, err := os.StartProcess(cmd, argv, &os.ProcAttr{Files: []*os.File{r0, w1, w2}})
+	if err != nil {
+		fatalf("%s", err)
+	}
+	defer p.Release()
+	r0.Close()
+	w1.Close()
+	w2.Close()
+	c := make(chan bool)
+	go func() {
+		w0.Write(stdin)
+		w0.Close()
+		c <- true
+	}()
+	go func() {
+		stdout, _ = ioutil.ReadAll(r1)
+		r1.Close()
+		c <- true
+	}()
+	stderr, _ = ioutil.ReadAll(r2)
+	r2.Close()
+	<-c
+	<-c
+
+	w, err := p.Wait(0)
+	if err != nil {
+		fatalf("%s", err)
+	}
+	ok = w.Exited() && w.ExitStatus() == 0
+	return
+}
+
+// Die with an error message.
+func fatalf(msg string, args ...interface{}) {
+	fmt.Fprintf(os.Stderr, msg+"\n", args...)
+	os.Exit(2)
+}
+
+var nerrors int
+
+func error(pos token.Pos, msg string, args ...interface{}) {
+	nerrors++
+	if pos.IsValid() {
+		fmt.Fprintf(os.Stderr, "%s: ", fset.Position(pos).String())
+	}
+	fmt.Fprintf(os.Stderr, msg, args...)
+	fmt.Fprintf(os.Stderr, "\n")
+}
+
+// isName returns true if s is a valid C identifier
+func isName(s string) bool {
+	for i, v := range s {
+		if v != '_' && (v < 'A' || v > 'Z') && (v < 'a' || v > 'z') && (v < '0' || v > '9') {
+			return false
+		}
+		if i == 0 && '0' <= v && v <= '9' {
+			return false
+		}
+	}
+	return s != ""
+}
+
+func creat(name string) *os.File {
+	f, err := os.Create(name)
+	if err != nil {
+		fatalf("%s", err)
+	}
+	return f
+}
+
+func slashToUnderscore(c int) int {
+	if c == '/' || c == '\\' || c == ':' {
+		c = '_'
+	}
+	return c
+}