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87 lines
2.2 KiB
87 lines
2.2 KiB
4 months ago
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// Copyright 2019 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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package main
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import (
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"fmt"
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"os/exec"
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"runtime"
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"strings"
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"syscall"
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)
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type userError struct {
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err string
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}
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var _ error = userError{}
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func (err userError) Error() string {
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return err.err
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}
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func newUserErrorf(format string, v ...interface{}) userError {
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return userError{err: fmt.Sprintf(format, v...)}
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}
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func newErrorwithSourceLocf(format string, v ...interface{}) error {
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return newErrorwithSourceLocfInternal(2, format, v...)
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}
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func wrapErrorwithSourceLocf(err error, format string, v ...interface{}) error {
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return newErrorwithSourceLocfInternal(2, "%s: %s", fmt.Sprintf(format, v...), err.Error())
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}
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func wrapSubprocessErrorWithSourceLoc(cmd *command, subprocessErr error) (exitCode int, err error) {
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if subprocessErr == nil {
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return 0, nil
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}
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if userErr, ok := getCCacheError(cmd, subprocessErr); ok {
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return 0, userErr
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}
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if exitCode, ok := getExitCode(subprocessErr); ok {
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return exitCode, nil
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}
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err = newErrorwithSourceLocfInternal(2, "failed to execute %#v: %s", cmd, subprocessErr)
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return 0, err
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}
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// Based on the implementation of log.Output
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func newErrorwithSourceLocfInternal(skip int, format string, v ...interface{}) error {
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_, file, line, ok := runtime.Caller(skip)
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if !ok {
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file = "???"
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line = 0
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}
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if lastSlash := strings.LastIndex(file, "/"); lastSlash >= 0 {
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file = file[lastSlash+1:]
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}
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return fmt.Errorf("%s:%d: %s", file, line, fmt.Sprintf(format, v...))
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}
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func getExitCode(err error) (exitCode int, ok bool) {
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if err == nil {
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return 0, true
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}
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if exiterr, ok := err.(*exec.ExitError); ok {
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if status, ok := exiterr.Sys().(syscall.WaitStatus); ok {
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return status.ExitStatus(), true
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}
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}
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return 0, false
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}
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func getCCacheError(compilerCmd *command, compilerCmdErr error) (ccacheErr userError, ok bool) {
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if en, ok := compilerCmdErr.(syscall.Errno); ok && en == syscall.ENOENT &&
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strings.Contains(compilerCmd.Path, "ccache") {
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ccacheErr =
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newUserErrorf("ccache not found under %s. Please install it",
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compilerCmd.Path)
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return ccacheErr, true
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}
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return ccacheErr, false
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}
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