SongFilter: convert argv to ConstBuffer

src/SongFilter.cxx

@@ -22,6 +22,7 @@
 #include "db/LightSong.hxx"
 #include "DetachedSong.hxx"
 #include "tag/Tag.hxx"
+#include "util/ConstBuffer.hxx"
 #include "util/ASCII.hxx"
 #include "util/UriUtil.hxx"
 #include "lib/icu/Collate.hxx"
@@ -181,13 +182,13 @@ SongFilter::Parse(const char *tag_string, const char *value, bool fold_case)
 }
 
 bool
-SongFilter::Parse(unsigned argc, char *argv[], bool fold_case)
+SongFilter::Parse(ConstBuffer<const char *> args, bool fold_case)
 {
-	if (argc == 0 || argc % 2 != 0)
+	if (args.size == 0 || args.size % 2 != 0)
 		return false;
 
-	for (unsigned i = 0; i < argc; i += 2)
-		if (!Parse(argv[i], argv[i + 1], fold_case))
+	for (unsigned i = 0; i < args.size; i += 2)
+		if (!Parse(args[i], args[i + 1], fold_case))
 			return false;
 
 	return true;

src/SongFilter.hxx

@@ -35,6 +35,7 @@
 #define LOCATE_TAG_FILE_TYPE	TAG_NUM_OF_ITEM_TYPES+10
 #define LOCATE_TAG_ANY_TYPE     TAG_NUM_OF_ITEM_TYPES+20
 
+template<typename T> struct ConstBuffer;
 struct Tag;
 struct TagItem;
 struct Song;
@@ -101,8 +102,7 @@ public:
 	gcc_nonnull(2,3)
 	bool Parse(const char *tag, const char *value, bool fold_case=false);
 
-	gcc_nonnull(3)
-	bool Parse(unsigned argc, char *argv[], bool fold_case=false);
+	bool Parse(ConstBuffer<const char *> args, bool fold_case=false);
 
 	gcc_pure
 	bool Match(const Tag &tag) const;

src/command/DatabaseCommands.cxx

@@ -27,6 +27,7 @@
 #include "CommandError.hxx"
 #include "client/Client.hxx"
 #include "tag/Tag.hxx"
+#include "util/ConstBuffer.hxx"
 #include "util/Error.hxx"
 #include "SongFilter.hxx"
 #include "protocol/Result.hxx"
@@ -63,8 +64,10 @@ handle_lsinfo2(Client &client, int argc, char *argv[])
 static CommandResult
 handle_match(Client &client, int argc, char *argv[], bool fold_case)
 {
+	ConstBuffer<const char *> args(argv + 1, argc - 1);
+
 	SongFilter filter;
-	if (!filter.Parse(argc - 1, argv + 1, fold_case)) {
+	if (!filter.Parse(args, fold_case)) {
 		command_error(client, ACK_ERROR_ARG, "incorrect arguments");
 		return CommandResult::ERROR;
 	}
@@ -92,8 +95,10 @@ handle_search(Client &client, int argc, char *argv[])
 static CommandResult
 handle_match_add(Client &client, int argc, char *argv[], bool fold_case)
 {
+	ConstBuffer<const char *> args(argv + 1, argc - 1);
+
 	SongFilter filter;
-	if (!filter.Parse(argc - 1, argv + 1, fold_case)) {
+	if (!filter.Parse(args, fold_case)) {
 		command_error(client, ACK_ERROR_ARG, "incorrect arguments");
 		return CommandResult::ERROR;
 	}
@@ -120,10 +125,11 @@ handle_searchadd(Client &client, int argc, char *argv[])
 CommandResult
 handle_searchaddpl(Client &client, int argc, char *argv[])
 {
-	const char *playlist = argv[1];
+	ConstBuffer<const char *> args(argv + 1, argc - 1);
+	const char *playlist = args.shift();
 
 	SongFilter filter;
-	if (!filter.Parse(argc - 2, argv + 2, true)) {
+	if (!filter.Parse(args, true)) {
 		command_error(client, ACK_ERROR_ARG, "incorrect arguments");
 		return CommandResult::ERROR;
 	}
@@ -142,8 +148,10 @@ handle_searchaddpl(Client &client, int argc, char *argv[])
 CommandResult
 handle_count(Client &client, int argc, char *argv[])
 {
+	ConstBuffer<const char *> args(argv + 1, argc - 1);
+
 	SongFilter filter;
-	if (!filter.Parse(argc - 1, argv + 1, false)) {
+	if (!filter.Parse(args, false)) {
 		command_error(client, ACK_ERROR_ARG, "incorrect arguments");
 		return CommandResult::ERROR;
 	}
@@ -191,8 +199,10 @@ handle_list(Client &client, int argc, char *argv[])
 
 		filter = new SongFilter((unsigned)TAG_ARTIST, argv[2]);
 	} else if (argc > 2) {
+		ConstBuffer<const char *> args(argv + 2, argc - 2);
+
 		filter = new SongFilter();
-		if (!filter->Parse(argc - 2, argv + 2, false)) {
+		if (!filter->Parse(args, false)) {
 			delete filter;
 			command_error(client, ACK_ERROR_ARG,
 				      "not able to parse args");

src/command/QueueCommands.cxx

@@ -31,6 +31,7 @@
 #include "protocol/ArgParser.hxx"
 #include "protocol/Result.hxx"
 #include "ls.hxx"
+#include "util/ConstBuffer.hxx"
 #include "util/UriUtil.hxx"
 #include "util/Error.hxx"
 #include "fs/AllocatedPath.hxx"
@@ -231,8 +232,10 @@ static CommandResult
 handle_playlist_match(Client &client, int argc, char *argv[],
 		      bool fold_case)
 {
+	ConstBuffer<const char *> args(argv + 1, argc - 1);
+
 	SongFilter filter;
-	if (!filter.Parse(argc - 1, argv + 1, fold_case)) {
+	if (!filter.Parse(args, fold_case)) {
 		command_error(client, ACK_ERROR_ARG, "incorrect arguments");
 		return CommandResult::ERROR;
 	}