PragmaTwice commented on code in PR #2236:
URL: https://github.com/apache/kvrocks/pull/2236#discussion_r1562625405
##########
src/commands/scan_base.h:
##########
@@ -90,23 +91,24 @@ class CommandSubkeyScanBase : public CommandScanBase {
CommandSubkeyScanBase() : CommandScanBase() {}
Status Parse(const std::vector<std::string> &args) override {
- if (args.size() % 2 == 0) {
- return {Status::RedisParseErr, errWrongNumOfArguments};
- }
-
- key_ = args[1];
- ParseCursor(args[2]);
- if (args.size() >= 5) {
- Status s = ParseMatchAndCountParam(util::ToLower(args[3]), args_[4]);
- if (!s.IsOK()) {
- return s;
- }
- }
-
- if (args.size() >= 7) {
- Status s = ParseMatchAndCountParam(util::ToLower(args[5]), args_[6]);
- if (!s.IsOK()) {
- return s;
+ CommandParser parser(args, 1);
+ key_ = GET_OR_RET(parser.TakeStr());
+ ParseCursor(GET_OR_RET(parser.TakeStr()));
+ while (parser.Good()) {
+ if (parser.EatEqICase("match")) {
+ prefix_ = GET_OR_RET(parser.TakeStr());
+ if (!prefix_.empty() && prefix_.back() == '*') {
+ prefix_ = prefix_.substr(0, prefix_.size() - 1);
+ } else {
+ return {Status::RedisParseErr, "currently only key prefix matching
is supported"};
+ }
+ } else if (parser.EatEqICase("count")) {
+ limit_ = GET_OR_RET(parser.TakeInt());
+ if (limit_ <= 0) {
+ return {Status::RedisParseErr, errInvalidSyntax};
+ }
+ } else {
+ return {Status::RedisParseErr, errWrongNumOfArguments};
Review Comment:
Please avoid [copy and paste
programming](https://en.wikipedia.org/wiki/Duplicate_code).
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