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fmt.go
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fmt.go
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package main
import (
"fmt"
"go/format"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"discovery-artifact-manager/snippetgen/common/fragment"
)
var formatters = []struct {
langName string
f func([]*fragment.CodeFragment) error
}{
{"Go", func(frags []*fragment.CodeFragment) error {
for _, frag := range frags {
fmt, err := format.Source([]byte(frag.Fragment))
if err != nil {
return err
}
frag.Fragment = string(fmt)
}
return nil
}},
{"Java", func(frags []*fragment.CodeFragment) error {
// foo
tmpDir, err := ioutil.TempDir("", "jsonpkger-java-format")
if err != nil {
return err
}
defer os.RemoveAll(tmpDir)
fnames := make([]string, 0, len(frags))
for i, frag := range frags {
fname := filepath.Join(tmpDir, fmt.Sprintf("p%d.java", i))
fnames = append(fnames, fname)
if err := ioutil.WriteFile(fname, []byte(frag.Fragment), 0650); err != nil {
return err
}
}
// google-java-format comes standard in workstations. No need to check/install.
cmdArg := append([]string{"-i"}, fnames...)
if err := exec.Command("google-java-format", cmdArg...).Run(); err != nil {
return err
}
for i, fname := range fnames {
src, err := ioutil.ReadFile(fname)
if err != nil {
return err
}
frags[i].Fragment = string(src)
}
return nil
}},
}
func formatFragments(fragments fragmentLanguageMap) error {
fragsByLang := make(map[string][]*fragment.CodeFragment)
for _, langFrags := range fragments {
for lang, frag := range langFrags {
fragsByLang[lang] = append(fragsByLang[lang], frag)
}
}
for _, fmter := range formatters {
if err := fmter.f(fragsByLang[fmter.langName]); err != nil {
return err
}
}
return nil
}