func generate(f *parse.FileSet, mode gen.Method) (*bytes.Buffer, *bytes.Buffer, error) {
outbuf := bytes.NewBuffer(make([]byte, 0, 4096))
writePkgHeader(outbuf, f.Package)
myImports := []string{"github.com/tinylib/msgp/msgp"}
for _, imp := range f.Imports {
if imp.Name != nil {
// have an alias, include it.
myImports = append(myImports, imp.Name.Name+` `+imp.Path.Value)
} else {
myImports = append(myImports, imp.Path.Value)
}
}
dedup := dedupImports(myImports)
writeImportHeader(outbuf, dedup...)
var testbuf *bytes.Buffer
var testwr io.Writer
if mode&gen.Test == gen.Test {
testbuf = bytes.NewBuffer(make([]byte, 0, 4096))
writePkgHeader(testbuf, f.Package)
if mode&(gen.Encode|gen.Decode) != 0 {
writeImportHeader(testbuf, "bytes", "github.com/tinylib/msgp/msgp", "testing")
} else {
writeImportHeader(testbuf, "github.com/tinylib/msgp/msgp", "testing")
}
testwr = testbuf
}
return outbuf, testbuf, f.PrintTo(gen.NewPrinter(mode, outbuf, testwr))
}
func Msgpack(file, pkg string) error {
fset, err := parse.File(file, true)
if err != nil {
return err
}
buf := bytes.NewBuffer([]byte{})
wt := iox.NewWriteTransformer(buf, func() iox.WriteTransformerFunc {
done := false
return func(s *iox.WriteTransformerState) {
if res := iox.StrictMatchFinder([]byte("package "+pkg), 0, s.Buffer); res != nil {
if done {
s.Pass(-1)
return
}
if res.Partial {
} else {
s.Drop(res.End + 1)
done = true
}
} else {
s.Drop(-1)
}
}
}())
_ = wt
prntr := gen.NewPrinter(gen.Encode|gen.Decode|gen.Marshal|gen.Unmarshal|gen.Size, buf, nil)
err = fset.PrintTo(prntr)
if err != nil {
return err
}
data := buf.Bytes()
data, err = format.Source(data)
if err != nil {
return err
}
f, err := os.OpenFile(file, os.O_APPEND|os.O_WRONLY, 0600)
if err != nil {
return err
}
defer f.Close()
_, err = io.Copy(f, bytes.NewReader(data))
if err != nil {
return err
}
return nil
}
func generate(f *parse.FileSet, mode gen.Method) (*bytes.Buffer, *bytes.Buffer, error) {
outbuf := bytes.NewBuffer(make([]byte, 0, 4096))
writePkgHeader(outbuf, f.Package)
writeImportHeader(outbuf, "github.com/tinylib/msgp/msgp")
var testbuf *bytes.Buffer
var testwr io.Writer
if mode&gen.Test == gen.Test {
testbuf = bytes.NewBuffer(make([]byte, 0, 4096))
writePkgHeader(testbuf, f.Package)
if mode&(gen.Encode|gen.Decode) != 0 {
writeImportHeader(testbuf, "bytes", "github.com/tinylib/msgp/msgp", "testing")
} else {
writeImportHeader(testbuf, "github.com/tinylib/msgp/msgp", "testing")
}
testwr = testbuf
}
return outbuf, testbuf, f.PrintTo(gen.NewPrinter(mode, outbuf, testwr))
}