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v2ray-core/main/confloader/external/external.go

55 lines
1.2 KiB

package external
import (
"io"
"os"
"strings"
"v2ray.com/core/common/buf"
"v2ray.com/core/common/platform/ctlcmd"
"v2ray.com/core/main/confloader"
)
//go:generate go run $GOPATH/src/v2ray.com/core/common/errors/errorgen/main.go -pkg external -path Main,ConfLoader,External
type ClosableMultiBuffer struct {
buf.MultiBuffer
}
func (c *ClosableMultiBuffer) Close() error {
c.MultiBuffer.Release()
return nil
}
func loadConfigFile(configFile string) (io.ReadCloser, error) {
if configFile == "stdin:" {
return os.Stdin, nil
}
if strings.HasPrefix(configFile, "http://") || strings.HasPrefix(configFile, "https://") {
content, err := ctlcmd.Run([]string{"fetch", configFile}, nil)
if err != nil {
return nil, err
}
return &ClosableMultiBuffer{content}, nil
}
fixedFile := os.ExpandEnv(configFile)
file, err := os.Open(fixedFile)
if err != nil {
return nil, newError("config file not readable").Base(err)
}
defer file.Close()
content, err := buf.ReadAllToMultiBuffer(file)
if err != nil {
return nil, newError("failed to load config file: ", fixedFile).Base(err).AtWarning()
}
return &ClosableMultiBuffer{content}, nil
}
func init() {
confloader.EffectiveConfigFileLoader = loadConfigFile
}