forked from kanmu/go-sqlfmt
/
sqlfmt.go
45 lines (35 loc) · 936 Bytes
/
sqlfmt.go
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package sqlfmt
import (
"bytes"
"go/format"
"go/parser"
"go/printer"
"go/token"
"github.com/pkg/errors"
)
// Options for go-sqlfmt
type Options struct {
Distance int
}
// Process formats SQL statement in .go file
func Process(filename string, src []byte, options *Options) ([]byte, error) {
fset := token.NewFileSet()
parserMode := parser.ParseComments
astFile, err := parser.ParseFile(fset, filename, src, parserMode)
if err != nil {
return nil, formatErr(errors.Wrap(err, "parser.ParseFile failed"))
}
replaceAst(astFile, fset, options)
var buf bytes.Buffer
if err = printer.Fprint(&buf, fset, astFile); err != nil {
return nil, formatErr(errors.Wrap(err, "printer.Fprint failed"))
}
out, err := format.Source(buf.Bytes())
if err != nil {
return nil, formatErr(errors.Wrap(err, "format.Source failed"))
}
return out, nil
}
func formatErr(err error) error {
return &FormatError{msg: err.Error()}
}