truncate too long descriptions in SCs

packages/util/strutil.go

@@ -0,0 +1,15 @@
+package util
+
+const (
+	ending = "[..]"
+)
+
+func GentleCut(s string, length int) string {
+	if len(s) <= length {
+		return s
+	}
+	if length <= len(ending) {
+		return ending
+	}
+	return s[:length-len(ending)] + ending
+}

packages/util/strutil_test.go

@@ -0,0 +1,21 @@
+package util
+
+import "testing"
+
+func TestCutGently(t *testing.T) {
+	t.Log(GentleCut("kukukuku", 10))
+	t.Log(GentleCut("kukukuku", 8))
+	t.Log(GentleCut("kukukuku", 5))
+	t.Log(GentleCut("kukukukukuku", 5))
+	t.Log(GentleCut("kukukukukuku", 6))
+	t.Log(GentleCut("kukukukukuku", 7))
+	t.Log(GentleCut("kukukukukuku", 8))
+	t.Log(GentleCut("kukukukukuku", 9))
+	t.Log(GentleCut("kukukukukuku", 10))
+	t.Log(GentleCut("kukukukukuku", 11))
+	t.Log(GentleCut("kukukukukuku", 12))
+	t.Log(GentleCut("ku", 1))
+	t.Log(GentleCut("ku", 5))
+	t.Log(GentleCut("kuku", 1))
+	t.Log(GentleCut("kuku", 4))
+}

packages/vm/examples/donatewithfeedback/dwfimpl/impl.go

@@ -4,6 +4,7 @@ package dwfimpl
 import (
 	"github.com/iotaledger/goshimmer/dapps/valuetransfers/packages/balance"
 	"github.com/iotaledger/wasp/packages/sctransaction"
+	"github.com/iotaledger/wasp/packages/util"
 	"github.com/iotaledger/wasp/packages/vm/examples/donatewithfeedback"
 	"github.com/iotaledger/wasp/packages/vm/vmtypes"
 	"strings"
@@ -51,6 +52,8 @@ func (ep dwfEntryPoint) WithGasLimit(_ int) vmtypes.EntryPoint {
 	return ep
 }
 
+const maxComment = 150
+
 // donate implements request 'donate'. It takes feedback text from the request
 // and adds it into the log of feedback messages
 func donate(ctx vmtypes.Sandbox) {
@@ -61,6 +64,7 @@ func donate(ctx vmtypes.Sandbox) {
 	donated := ctx.AccessSCAccount().AvailableBalanceFromRequest(&balance.ColorIOTA)
 	// take feedback text contained in the request
 	feedback, ok, err := ctx.AccessRequest().Args().GetString(donatewithfeedback.VarReqFeedback)
+	feedback = util.GentleCut(feedback, maxComment)
 
 	stateAccess := ctx.AccessState()
 	tlog := stateAccess.GetTimestampedLog(donatewithfeedback.VarStateTheLog)

packages/vm/examples/fairauction/impl.go

@@ -65,6 +65,7 @@ const (
 	OwnerMarginDefault = 50  // 5%
 	OwnerMarginMin     = 5   // minimum 0.5%
 	OwnerMarginMax     = 100 // max 10%
+	MaxDescription     = 150
 )
 
 // validating constants at node boot
@@ -289,6 +290,7 @@ func startAuction(ctx vmtypes.Sandbox) {
 	if !ok {
 		description = "N/A"
 	}
+	description = util.GentleCut(description, MaxDescription)
 
 	// find out if auction for this color already exist in the dictionary
 	auctions := ctx.AccessState().GetDictionary(VarStateAuctions)

packages/vm/examples/tokenregistry/impl.go

@@ -84,6 +84,8 @@ func initSC(ctx vmtypes.Sandbox) {
 	ctx.Publishf("TokenRegistry: initSC")
 }
 
+const maxDescription = 150
+
 // mintSupply implements 'mint supply' request
 func mintSupply(ctx vmtypes.Sandbox) {
 	ctx.Publish("TokenRegistry: mintSupply")
@@ -116,6 +118,8 @@ func mintSupply(ctx vmtypes.Sandbox) {
 	if !ok {
 		description = "no dscr"
 	}
+	description = util.GentleCut(description, maxDescription)
+
 	// get the additional arbitrary deta attached to the supply record
 	uddata, err := reqAccess.Args().Get(VarReqUserDefinedMetadata)
 	if err != nil {

tools/cluster/tests/wasptest2/deploy_test.go

@@ -8,7 +8,7 @@ import (
 	"github.com/iotaledger/wasp/packages/hashing"
 	"github.com/iotaledger/wasp/packages/kv"
 	"github.com/iotaledger/wasp/packages/testutil"
-	_ "github.com/iotaledger/wasp/packages/vm/examples"
+	//_ "github.com/iotaledger/wasp/packages/vm/examples"
 	"github.com/iotaledger/wasp/packages/vm/examples/inccounter"
 	"github.com/iotaledger/wasp/packages/vm/examples/tokenregistry"
 	"github.com/iotaledger/wasp/packages/vm/vmconst"