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golist.go
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golist.go
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package golist
import (
"bytes"
"encoding/json"
"fmt"
"io"
"os"
"os/exec"
)
func GoListPackages(flags []string, pkgnames []string) ([]Package, error) {
cmdline := []string{"go", "list"}
cmdline = append(cmdline, flags...)
cmdline = append(cmdline, "-json", "--")
cmdline = append(cmdline, pkgnames...)
cmd := exec.Command(cmdline[0], cmdline[1:]...)
cmd.Stderr = os.Stderr
stdoutBytes, err := cmd.Output()
if err != nil {
return nil, fmt.Errorf("%q: %w", cmdline, err)
}
stdoutDecoder := json.NewDecoder(bytes.NewReader(stdoutBytes))
var ret []Package
for {
var pkg Package
if err := stdoutDecoder.Decode(&pkg); err != nil {
if err == io.EOF {
break
}
return nil, err
}
ret = append(ret, pkg)
}
return ret, nil
}
func GoListModules(flags []string, modnames []string) ([]Module, error) {
cmdline := []string{"go", "list"}
cmdline = append(cmdline, flags...)
cmdline = append(cmdline, "-m", "-json", "--")
cmdline = append(cmdline, modnames...)
cmd := exec.Command(cmdline[0], cmdline[1:]...)
cmd.Stderr = os.Stderr
stdoutBytes, err := cmd.Output()
if err != nil {
return nil, fmt.Errorf("%q: %w", cmdline, err)
}
stdoutDecoder := json.NewDecoder(bytes.NewReader(stdoutBytes))
var ret []Module
for {
var mod Module
if err := stdoutDecoder.Decode(&mod); err != nil {
if err == io.EOF {
break
}
return nil, err
}
if mod.Dir == "" {
mod.Dir = "vendor/" + mod.Path
}
ret = append(ret, mod)
}
return ret, nil
}