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io.go
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io.go
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package internal
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"github.com/luno/jettison/errors"
)
const (
weldGenFileName = "weld_gen.go"
backendsGenFileName = "backends_gen.go"
)
// RemoveGenFiles removes previously generated files. During Generate these
// files can cause issues if they contain syntax or other compilation errors.
func RemoveGenFiles(workDir string) error {
target := filepath.Join(workDir, weldGenFileName)
err := os.Remove(target)
if err != nil && !errors.Is(err, os.ErrNotExist) {
return err
}
target = filepath.Join(workDir, backendsGenFileName)
err = os.Remove(target)
if err != nil && !errors.Is(err, os.ErrNotExist) {
return err
}
return nil
}
// WriteGenFiles outputs the results from Generate to *_gen.go files.
func WriteGenFiles(res *Result, workDir string, verbose bool) error {
if verbose {
fmt.Println("Writing", weldGenFileName)
}
target := filepath.Join(workDir, weldGenFileName)
err := ioutil.WriteFile(target, res.WeldOutput, 0o644)
if err != nil {
return err
}
if len(res.BackendsOutput) == 0 {
return nil
}
if verbose {
fmt.Println("Writing", backendsGenFileName)
}
target = filepath.Join(workDir, backendsGenFileName)
return ioutil.WriteFile(target, res.BackendsOutput, 0o644)
}