0421bac259
Use go/packages instead of x/tools/loader: it allows to work with go modules and speedups loading of packages with the help of build cache. A lot of linters became "fast": they are enabled by --fast now and work in 1-2 seconds. Only unparam, interfacer and megacheck are "slow" linters now. Average project is analyzed 20-40% faster than before if all linters are enabled! If we enable all linters except unparam, interfacer and megacheck analysis is 10-20x faster!
66 lines
1.2 KiB
Go
66 lines
1.2 KiB
Go
package goutil
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import (
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"bufio"
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"bytes"
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"context"
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"os"
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"os/exec"
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"strconv"
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"strings"
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"github.com/golangci/golangci-lint/pkg/logutils"
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"github.com/pkg/errors"
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)
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type Env struct {
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vars map[string]string
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log logutils.Log
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debugf logutils.DebugFunc
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}
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func NewEnv(log logutils.Log) *Env {
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return &Env{
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vars: map[string]string{},
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log: log,
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debugf: logutils.Debug("env"),
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}
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}
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func (e *Env) Discover(ctx context.Context) error {
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out, err := exec.CommandContext(ctx, "go", "env").Output()
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if err != nil {
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return errors.Wrap(err, "failed to run 'go env'")
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}
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scanner := bufio.NewScanner(bytes.NewReader(out))
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scanner.Split(bufio.ScanLines)
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for scanner.Scan() {
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parts := strings.SplitN(scanner.Text(), "=", 2)
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if len(parts) != 2 {
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e.log.Warnf("Can't parse go env line %q: got %d parts", scanner.Text(), len(parts))
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continue
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}
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v, err := strconv.Unquote(parts[1])
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if err != nil {
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e.log.Warnf("Invalid key %q with value %q: %s", parts[0], parts[1], err)
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continue
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}
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e.vars[parts[0]] = v
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}
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e.debugf("Read go env: %#v", e.vars)
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return nil
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}
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func (e Env) Get(k string) string {
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envValue := os.Getenv(k)
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if envValue != "" {
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return envValue
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}
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return e.vars[k]
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}
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