v2ray-core/loader.go

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package core
import (
"io"
"io/ioutil"
"github.com/golang/protobuf/proto"
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"v2ray.com/core/common"
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"v2ray.com/core/common/errors"
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)
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// ConfigLoader is an utility to load V2Ray config from external source.
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type ConfigLoader func(input io.Reader) (*Config, error)
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var configLoaderCache = make(map[ConfigFormat]ConfigLoader)
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// RegisterConfigLoader add a new ConfigLoader.
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func RegisterConfigLoader(format ConfigFormat, loader ConfigLoader) error {
configLoaderCache[format] = loader
return nil
}
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// LoadConfig loads config with given format from given source.
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func LoadConfig(format ConfigFormat, input io.Reader) (*Config, error) {
loader, found := configLoaderCache[format]
if !found {
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return nil, errors.New("Core: ", ConfigFormat_name[int32(format)], " is not loadable.")
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}
return loader(input)
}
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func loadProtobufConfig(input io.Reader) (*Config, error) {
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config := new(Config)
data, _ := ioutil.ReadAll(input)
if err := proto.Unmarshal(data, config); err != nil {
return nil, err
}
return config, nil
}
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func init() {
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common.Must(RegisterConfigLoader(ConfigFormat_Protobuf, loadProtobufConfig))
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}