Add precision to the commandline

main.go

@@ -25,6 +25,7 @@ var (
  output = flag.String("o", "", "Output file")
  patch = flag.Bool("p", false, "Patch mode")
  port = flag.Int("port", 0, "Serve web UI on port")
+ precision = flag.Float64("precision", 0, "Precision for numbers")
  set = flag.Bool("set", false, "Arrays as sets")
  setkeys = flag.String("setkeys", "", "Keys to identify set objects")
  translate = flag.String("t", "", "Translate mode")
@@ -140,6 +141,7 @@ func parseMetadata() ([]jd.Metadata, error) {
  if *format == "merge" {
  metadata = append(metadata, jd.MERGE)
  }
+ metadata = append(metadata, jd.SetPrecision(*precision))
  return metadata, nil
 }
 
@@ -154,20 +156,22 @@ func printUsageAndExit() {
  `When patching (-p) FILE1 is a diff.`,
  ``,
  `Options:`,
- ` -color Print color diff.`,
- ` -p Apply patch FILE1 to FILE2 or STDIN.`,
- ` -o=FILE3 Write to FILE3 instead of STDOUT.`,
- ` -set Treat arrays as sets.`,
- ` -mset Treat arrays as multisets (bags).`,
- ` -setkeys Keys to identify set objects`,
- ` -yaml Read and write YAML instead of JSON.`,
- ` -port=N Serve web UI on port N`,
- ` -f=FORMAT Read and write diff in FORMAT "jd" (default), "patch" (RFC 6902) or`,
- ` "merge" (RFC 7386)`,
- ` -t=FORMATS Translate FILE1 between FORMATS. Supported formats are "jd",`,
- ` "patch" (RFC 6902), "merge" (RFC 7386), "json" and "yaml".`,
- ` FORMATS are provided as a pair separated by "2". E.g.`,
- ` "yaml2json" or "jd2patch".`,
+ ` -color Print color diff.`,
+ ` -p Apply patch FILE1 to FILE2 or STDIN.`,
+ ` -o=FILE3 Write to FILE3 instead of STDOUT.`,
+ ` -set Treat arrays as sets.`,
+ ` -mset Treat arrays as multisets (bags).`,
+ ` -setkeys Keys to identify set objects`,
+ ` -yaml Read and write YAML instead of JSON.`,
+ ` -port=N Serve web UI on port N`,
+ ` -precision=N Precision for numbers. Positive number for decimal places or`,
+ ` negative for significant figures.`,
+ ` -f=FORMAT Read and write diff in FORMAT "jd" (default), "patch" (RFC 6902) or`,
+ ` "merge" (RFC 7386)`,
+ ` -t=FORMATS Translate FILE1 between FORMATS. Supported formats are "jd",`,
+ ` "patch" (RFC 6902), "merge" (RFC 7386), "json" and "yaml".`,
+ ` FORMATS are provided as a pair separated by "2". E.g.`,
+ ` "yaml2json" or "jd2patch".`,
  ``,
  `Examples:`,
  ` jd a.json b.json`,