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package main
import (
"errors"
"flag"
"fmt"
"os"
"path/filepath"
"strings"
"github.com/mailru/easyjson/bootstrap"
// Reference the gen package to be friendly to vendoring tools,
// as it is an indirect dependency.
// (The temporary bootstrapping code uses it.)
_ "github.com/mailru/easyjson/gen"
"github.com/mailru/easyjson/parser"
)
var buildTags = flag.String("build_tags", "", "build tags to add to generated file")
var snakeCase = flag.Bool("snake_case", false, "use snake_case names instead of CamelCase by default")
var lowerCamelCase = flag.Bool("lower_camel_case", false, "use lowerCamelCase names instead of CamelCase by default")
var noStdMarshalers = flag.Bool("no_std_marshalers", false, "don't generate MarshalJSON/UnmarshalJSON funcs")
var omitEmpty = flag.Bool("omit_empty", false, "omit empty fields by default")
var allStructs = flag.Bool("all", false, "generate marshaler/unmarshalers for all structs in a file")
var leaveTemps = flag.Bool("leave_temps", false, "do not delete temporary files")
var stubs = flag.Bool("stubs", false, "only generate stubs for marshaler/unmarshaler funcs")
var noformat = flag.Bool("noformat", false, "do not run 'gofmt -w' on output file")
var specifiedName = flag.String("output_filename", "", "specify the filename of the output")
var processPkg = flag.Bool("pkg", false, "process the whole package instead of just the given file")
func generate(fname string) (err error) {
fInfo, err := os.Stat(fname)
if err != nil {
return err
}
p := parser.Parser{AllStructs: *allStructs}
if err := p.Parse(fname, fInfo.IsDir()); err != nil {
return fmt.Errorf("Error parsing %v: %v", fname, err)
}
var outName string
if fInfo.IsDir() {
outName = filepath.Join(fname, p.PkgName+"_easyjson.go")
} else {
if s := strings.TrimSuffix(fname, ".go"); s == fname {
return errors.New("Filename must end in '.go'")
} else {
outName = s + "_easyjson.go"
}
}
if *specifiedName != "" {
outName = *specifiedName
}
var trimmedBuildTags string
if *buildTags != "" {
trimmedBuildTags = strings.TrimSpace(*buildTags)
}
g := bootstrap.Generator{
BuildTags: trimmedBuildTags,
PkgPath: p.PkgPath,
PkgName: p.PkgName,
Types: p.StructNames,
SnakeCase: *snakeCase,
LowerCamelCase: *lowerCamelCase,
NoStdMarshalers: *noStdMarshalers,
OmitEmpty: *omitEmpty,
LeaveTemps: *leaveTemps,
OutName: outName,
StubsOnly: *stubs,
NoFormat: *noformat,
}
if err := g.Run(); err != nil {
return fmt.Errorf("Bootstrap failed: %v", err)
}
return nil
}
func main() {
flag.Parse()
files := flag.Args()
gofile := os.Getenv("GOFILE")
if *processPkg {
gofile = filepath.Dir(gofile)
}
if len(files) == 0 && gofile != "" {
files = []string{gofile}
} else if len(files) == 0 {
flag.Usage()
os.Exit(1)
}
for _, fname := range files {
if err := generate(fname); err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}
}
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