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Improved error checking

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This commit is contained in:
Taylor Gerring 2015-06-06 10:04:13 -04:00
parent ed621aae33
commit 2729e6294a
1 changed files with 7 additions and 3 deletions
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10
cmd/geth/chaincmd.go
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@ -76,16 +76,20 @@ func exportChain(ctx *cli.Context) {
start := time.Now() start := time.Now()
var err error var err error
fp := ctx.Args().First()
if len(ctx.Args()) < 3 { if len(ctx.Args()) < 3 {
err = utils.ExportChain(chain, ctx.Args().First()) err = utils.ExportChain(chain, fp)
} else { } else {
// This can be improved to allow for numbers larger than 9223372036854775807 // This can be improved to allow for numbers larger than 9223372036854775807
first, ferr := strconv.ParseInt(ctx.Args().Get(1), 10, 64) first, ferr := strconv.ParseInt(ctx.Args().Get(1), 10, 64)
last, lerr := strconv.ParseInt(ctx.Args().Get(2), 10, 64) last, lerr := strconv.ParseInt(ctx.Args().Get(2), 10, 64)
if ferr != nil || lerr != nil { if ferr != nil || lerr != nil {
utils.Fatalf("Export error in parsing parameters\n") utils.Fatalf("Export error in parsing parameters: block number not an integer\n")
} }
err = utils.ExportAppendChain(chain, ctx.Args().First(), uint64(first), uint64(last)) if first < 0 || last < 0 {
utils.Fatalf("Export error: block number must be greater than 0\n")
}
err = utils.ExportAppendChain(chain, fp, uint64(first), uint64(last))
} }
if err != nil { if err != nil {