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// 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 (
"bytes"
"fmt"
"go/token"
"os"
"os/exec"
)
// 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) {
p := exec.Command(argv[0], argv[1:]...)
p.Stdin = bytes.NewReader(stdin)
var bout, berr bytes.Buffer
p.Stdout = &bout
p.Stderr = &berr
err := p.Run()
if _, ok := err.(*exec.ExitError); err != nil && !ok {
fatalf("%s", err)
}
ok = p.ProcessState.Success()
stdout, stderr = bout.Bytes(), berr.Bytes()
return
}
func lineno(pos token.Pos) string {
return fset.Position(pos).String()
}
// Die with an error message.
func fatalf(msg string, args ...interface{}) {
// If we've already printed other errors, they might have
// caused the fatal condition. Assume they're enough.
if nerrors == 0 {
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 reports whether 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 rune) rune {
if c == '/' || c == '\\' || c == ':' {
c = '_'
}
return c
}
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