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// license-detector prints the most probable licenses for a repository
// given either its path in the local file system or a URL pointing to
// the repository.
package main
import (
"encoding/json"
"fmt"
"io"
"log"
"os"
"github.com/go-enry/go-license-detector/v4/licensedb"
"github.com/spf13/pflag"
)
func main() {
format := pflag.StringP("format", "f", "text", "Output format: json, text")
pflag.Usage = func() {
fmt.Fprintln(os.Stderr, "Usage: license-detector path ...")
pflag.PrintDefaults()
}
pflag.Parse()
if (*format != "json" && *format != "text") || pflag.NArg() == 0 {
pflag.Usage()
os.Exit(1)
}
detect(pflag.Args(), *format, os.Stdout)
}
// detect runs license analysis on each item in `args`` and outputs
// the results in the specified `format` to `writer`.
func detect(args []string, format string, writer io.Writer) {
results := licensedb.Analyse(args...)
switch format {
case "text":
for _, res := range results {
fmt.Fprintln(writer, res.Arg)
if res.ErrStr != "" {
fmt.Fprintf(writer, "\t%v\n", res.ErrStr)
continue
}
for _, m := range res.Matches {
fmt.Fprintf(writer, "\t%1.f%%\t%s\n", 100*m.Confidence, m.License)
}
}
case "json":
b, err := json.MarshalIndent(results, "", "\t")
if err != nil {
log.Fatalf("could not encode result to JSON: %v", err)
}
fmt.Fprintf(writer, "%s\n", b)
}
}
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