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Merge pull request #187 from Consensys/80-organisation-of-lt-binary-t…
…race-format feat: Support `lt` Binary Trace Format
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| package cmd | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "os" | ||
| "strings" | ||
|
|
||
| "github.com/consensys/go-corset/pkg/trace" | ||
| "github.com/consensys/go-corset/pkg/util" | ||
| "github.com/spf13/cobra" | ||
| ) | ||
|
|
||
| // traceCmd represents the trace command for manipulating traces. | ||
| var traceCmd = &cobra.Command{ | ||
| Use: "trace [flags] trace_file", | ||
| Short: "Operate on a trace file.", | ||
| Long: `Operate on a trace file, such as converting | ||
| it from one format (e.g. lt) to another (e.g. json), | ||
| or filtering out modules, or listing columns, etc.`, | ||
| Run: func(cmd *cobra.Command, args []string) { | ||
| if len(args) != 1 { | ||
| fmt.Println(cmd.UsageString()) | ||
| os.Exit(1) | ||
| } | ||
| // Parse trace | ||
| trace := readTraceFile(args[0]) | ||
| list := getFlag(cmd, "list") | ||
| filter := getString(cmd, "filter") | ||
| output := getString(cmd, "out") | ||
| // | ||
| if filter != "" { | ||
| trace = filterColumns(trace, filter) | ||
| } | ||
| if list { | ||
| listColumns(trace) | ||
| } | ||
| // | ||
| if output != "" { | ||
| writeTraceFile(output, trace) | ||
| } | ||
| }, | ||
| } | ||
|
|
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| // Construct a new trace containing only those columns from the original who | ||
| // name begins with the given prefix. | ||
| func filterColumns(tr trace.Trace, prefix string) trace.Trace { | ||
| ntr := trace.EmptyArrayTrace() | ||
| // | ||
| for i := uint(0); i < tr.Width(); i++ { | ||
| ith := tr.ColumnByIndex(i) | ||
| if strings.HasPrefix(ith.Name(), prefix) { | ||
| ntr.Add(ith) | ||
| } | ||
| } | ||
| // Done | ||
| return ntr | ||
| } | ||
|
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| func listColumns(tr trace.Trace) { | ||
| tbl := util.NewTablePrinter(3, tr.Width()) | ||
|
|
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| for i := uint(0); i < tr.Width(); i++ { | ||
| ith := tr.ColumnByIndex(i) | ||
| elems := fmt.Sprintf("%d rows", ith.Height()) | ||
| bytes := fmt.Sprintf("%d bytes", ith.Width()*ith.Height()) | ||
| tbl.SetRow(i, ith.Name(), elems, bytes) | ||
| } | ||
|
|
||
| // | ||
| tbl.SetMaxWidth(64) | ||
| tbl.Print() | ||
| } | ||
|
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| func init() { | ||
| rootCmd.AddCommand(traceCmd) | ||
| traceCmd.Flags().BoolP("list", "l", false, "detail the columns in the trace file") | ||
| traceCmd.Flags().StringP("out", "o", "", "Specify output file to write trace") | ||
| traceCmd.Flags().StringP("filter", "f", "", "Filter columns beginning with prefix") | ||
| } |
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