diff --git a/NEWS b/NEWS
index a04b255ee..f2e49ce46 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,7 @@
ver 0.20 (not yet released)
* protocol
- "commands" returns playlist commands only if playlist_directory configured
+ - "search"/"find" have a "window" parameter
* output
- pulse: set channel map to WAVE-EX
diff --git a/doc/protocol.xml b/doc/protocol.xml
index 858ca0990..a85bbbc86 100644
--- a/doc/protocol.xml
+++ b/doc/protocol.xml
@@ -1558,6 +1558,7 @@ OK
TYPE
WHAT
...
+ window START:END
@@ -1602,6 +1603,13 @@ OK
WHAT is what to find.
+
+
+ window can be used to query only a
+ portion of the real response. The parameter is two
+ zero-based record numbers; a start number and an end
+ number.
+
@@ -1794,6 +1802,7 @@ OK
TYPE
WHAT
...
+ window START:END
diff --git a/src/command/DatabaseCommands.cxx b/src/command/DatabaseCommands.cxx
index a3ea8d0ae..988542f44 100644
--- a/src/command/DatabaseCommands.cxx
+++ b/src/command/DatabaseCommands.cxx
@@ -32,6 +32,7 @@
#include "util/Error.hxx"
#include "SongFilter.hxx"
#include "protocol/Result.hxx"
+#include "protocol/ArgParser.hxx"
#include "BulkEdit.hxx"
#include
@@ -70,6 +71,16 @@ handle_match(Client &client, unsigned argc, char *argv[], bool fold_case)
{
ConstBuffer args(argv + 1, argc - 1);
+ unsigned window_start = 0, window_end = std::numeric_limits::max();
+ if (args.size >= 2 && strcmp(args[args.size - 2], "window") == 0) {
+ if (!check_range(client, &window_start, &window_end,
+ args.back()))
+ return CommandResult::ERROR;
+
+ args.pop_back();
+ args.pop_back();
+ }
+
SongFilter filter;
if (!filter.Parse(args, fold_case)) {
command_error(client, ACK_ERROR_ARG, "incorrect arguments");
@@ -79,7 +90,8 @@ handle_match(Client &client, unsigned argc, char *argv[], bool fold_case)
const DatabaseSelection selection("", true, &filter);
Error error;
- return db_selection_print(client, selection, true, false, error)
+ return db_selection_print(client, selection, true, false,
+ window_start, window_end, error)
? CommandResult::OK
: print_error(client, error);
}
diff --git a/src/db/DatabasePrint.cxx b/src/db/DatabasePrint.cxx
index 498aedf97..945ac6ab9 100644
--- a/src/db/DatabasePrint.cxx
+++ b/src/db/DatabasePrint.cxx
@@ -147,27 +147,49 @@ PrintPlaylistFull(Client &client, bool base,
bool
db_selection_print(Client &client, const DatabaseSelection &selection,
- bool full, bool base, Error &error)
+ bool full, bool base,
+ unsigned window_start, unsigned window_end,
+ Error &error)
{
const Database *db = client.GetDatabase(error);
if (db == nullptr)
return false;
+ unsigned i = 0;
+
using namespace std::placeholders;
const auto d = selection.filter == nullptr
? std::bind(full ? PrintDirectoryFull : PrintDirectoryBrief,
std::ref(client), base, _1)
: VisitDirectory();
- const auto s = std::bind(full ? PrintSongFull : PrintSongBrief,
- std::ref(client), base, _1);
+ VisitSong s = std::bind(full ? PrintSongFull : PrintSongBrief,
+ std::ref(client), base, _1);
const auto p = selection.filter == nullptr
? std::bind(full ? PrintPlaylistFull : PrintPlaylistBrief,
std::ref(client), base, _1, _2)
: VisitPlaylist();
+ if (window_start > 0 || window_end < std::numeric_limits::max())
+ s = [s, window_start, window_end, &i](const LightSong &song,
+ Error &error2){
+ const bool in_window = i >= window_start && i < window_end;
+ ++i;
+ return !in_window || s(song, error2);
+ };
+
return db->Visit(selection, d, s, p, error);
}
+bool
+db_selection_print(Client &client, const DatabaseSelection &selection,
+ bool full, bool base,
+ Error &error)
+{
+ return db_selection_print(client, selection, full, base,
+ 0, std::numeric_limits::max(),
+ error);
+}
+
static bool
PrintSongURIVisitor(Client &client, const LightSong &song)
{
diff --git a/src/db/DatabasePrint.hxx b/src/db/DatabasePrint.hxx
index 2ab5e703d..7e4dd8572 100644
--- a/src/db/DatabasePrint.hxx
+++ b/src/db/DatabasePrint.hxx
@@ -37,6 +37,12 @@ bool
db_selection_print(Client &client, const DatabaseSelection &selection,
bool full, bool base, Error &error);
+bool
+db_selection_print(Client &client, const DatabaseSelection &selection,
+ bool full, bool base,
+ unsigned window_start, unsigned window_end,
+ Error &error);
+
bool
PrintUniqueTags(Client &client, unsigned type, uint32_t group_mask,
const SongFilter *filter,