input/Proxy: use InputStreamPtr

src/input/IcyInputStream.cxx

@@ -22,9 +22,9 @@
 #include "IcyMetaDataParser.hxx"
 #include "tag/Tag.hxx"
 
-IcyInputStream::IcyInputStream(InputStream *_input,
+IcyInputStream::IcyInputStream(InputStreamPtr _input,
 			       std::shared_ptr<IcyMetaDataParser> _parser) noexcept
-	:ProxyInputStream(_input), parser(std::move(_parser))
+	:ProxyInputStream(std::move(_input)), parser(std::move(_parser))
 {
 }
 

src/input/IcyInputStream.hxx

@@ -53,7 +53,7 @@ public:
 	 * needs to feed parameters (e.g. from the "icy-metaint"
 	 * header) into it
 	 */
-	IcyInputStream(InputStream *_input,
+	IcyInputStream(InputStreamPtr _input,
 		       std::shared_ptr<IcyMetaDataParser> _parser) noexcept;
 	virtual ~IcyInputStream() noexcept;
 

src/input/Open.cxx

@@ -42,11 +42,8 @@ InputStream::Open(const char *url,
 		InputStream *is;
 
 		is = plugin->open(url, mutex, cond);
-		if (is != nullptr) {
-			is = input_rewind_open(is);
-
-			return InputStreamPtr(is);
-		}
+		if (is != nullptr)
+			return input_rewind_open(InputStreamPtr(is));
 	}
 
 	throw std::runtime_error("Unrecognized URI");

src/input/ProxyInputStream.cxx

@@ -21,77 +21,77 @@
 #include "ProxyInputStream.hxx"
 #include "tag/Tag.hxx"
 
-ProxyInputStream::ProxyInputStream(InputStream *_input) noexcept
+ProxyInputStream::ProxyInputStream(InputStreamPtr _input) noexcept
 	:InputStream(_input->GetURI(), _input->mutex, _input->cond),
-	 input(*_input) {}
-
-ProxyInputStream::~ProxyInputStream() noexcept
+	 input(std::move(_input))
 {
-	delete &input;
+	assert(input);
 }
 
+ProxyInputStream::~ProxyInputStream() noexcept = default;
+
 void
 ProxyInputStream::CopyAttributes()
 {
-	if (input.IsReady()) {
+	if (input->IsReady()) {
 		if (!IsReady()) {
-			if (input.HasMimeType())
-				SetMimeType(input.GetMimeType());
+			if (input->HasMimeType())
+				SetMimeType(input->GetMimeType());
 
-			size = input.KnownSize()
-				? input.GetSize()
+			size = input->KnownSize()
+				? input->GetSize()
 				: UNKNOWN_SIZE;
 
-			seekable = input.IsSeekable();
+			seekable = input->IsSeekable();
 			SetReady();
 		}
 
-		offset = input.GetOffset();
+		offset = input->GetOffset();
 	}
 }
 
 void
 ProxyInputStream::Check()
 {
-	input.Check();
+	input->Check();
 }
 
 void
 ProxyInputStream::Update() noexcept
 {
-	input.Update();
+	input->Update();
 	CopyAttributes();
 }
 
 void
 ProxyInputStream::Seek(offset_type new_offset)
 {
-	input.Seek(new_offset);
+	input->Seek(new_offset);
 	CopyAttributes();
 }
 
 bool
 ProxyInputStream::IsEOF() noexcept
 {
-	return input.IsEOF();
+	return input->IsEOF();
 }
 
 std::unique_ptr<Tag>
 ProxyInputStream::ReadTag()
 {
-	return input.ReadTag();
+	return input->ReadTag();
 }
 
 bool
 ProxyInputStream::IsAvailable() noexcept
 {
-	return input.IsAvailable();
+	return input->IsAvailable();
 }
 
 size_t
 ProxyInputStream::Read(void *ptr, size_t read_size)
 {
-	size_t nbytes = input.Read(ptr, read_size);
+	size_t nbytes = input->Read(ptr, read_size);
 	CopyAttributes();
 	return nbytes;
 }

src/input/ProxyInputStream.hxx

@@ -21,6 +21,7 @@
 #define MPD_PROXY_INPUT_STREAM_HXX
 
 #include "InputStream.hxx"
+#include "Ptr.hxx"
 
 struct Tag;
 
@@ -31,11 +32,11 @@ struct Tag;
  */
 class ProxyInputStream : public InputStream {
 protected:
-	InputStream &input;
+	InputStreamPtr input;
 
 public:
 	gcc_nonnull_all
-	ProxyInputStream(InputStream *_input) noexcept;
+	explicit ProxyInputStream(InputStreamPtr _input) noexcept;
 
 	virtual ~ProxyInputStream() noexcept;
 

src/input/plugins/CurlInputPlugin.cxx

@@ -438,21 +438,16 @@ CurlInputStream::DoSeek(offset_type new_offset)
 inline InputStream *
 CurlInputStream::Open(const char *url, Mutex &mutex, Cond &cond)
 {
-	CurlInputStream *c = new CurlInputStream((*curl_init)->GetEventLoop(),
+	auto c = std::make_unique<CurlInputStream>((*curl_init)->GetEventLoop(),
 						   url, mutex, cond);
 
-	try {
-		BlockingCall(c->GetEventLoop(), [c](){
+	BlockingCall(c->GetEventLoop(), [&c](){
 			c->InitEasy();
 			c->StartRequest();
 		});
-	} catch (...) {
-		delete c;
-		throw;
-	}
 
 	auto icy = c->icy;
-	return new IcyInputStream(c, std::move(icy));
+	return new IcyInputStream(std::move(c), std::move(icy));
 }
 
 static InputStream *

src/input/plugins/RewindInputPlugin.cxx

@@ -47,9 +47,8 @@ class RewindInputStream final : public ProxyInputStream {
 	char buffer[64 * 1024];
 
 public:
-	RewindInputStream(InputStream *_input)
-		:ProxyInputStream(_input) {
-	}
+	explicit RewindInputStream(InputStreamPtr _input)
+		:ProxyInputStream(std::move(_input)) {}
 
 	/* virtual methods from InputStream */
 
@@ -71,7 +70,7 @@ private:
 	 * buffer contain more data for the next read operation?
 	 */
 	bool ReadingFromBuffer() const noexcept {
-		return tail > 0 && offset < input.GetOffset();
+		return tail > 0 && offset < input->GetOffset();
 	}
 };
 
@@ -82,7 +81,7 @@ RewindInputStream::Read(void *ptr, size_t read_size)
 		/* buffered read */
 
 		assert(head == (size_t)offset);
-		assert(tail == (size_t)input.GetOffset());
+		assert(tail == (size_t)input->GetOffset());
 
 		if (read_size > tail - head)
 			read_size = tail - head;
@@ -95,9 +94,9 @@ RewindInputStream::Read(void *ptr, size_t read_size)
 	} else {
 		/* pass method call to underlying stream */
 
-		size_t nbytes = input.Read(ptr, read_size);
+		size_t nbytes = input->Read(ptr, read_size);
 
-		if (input.GetOffset() > (offset_type)sizeof(buffer))
+		if (input->GetOffset() > (offset_type)sizeof(buffer))
 			/* disable buffering */
 			tail = 0;
 		else if (tail == (size_t)offset) {
@@ -106,7 +105,7 @@ RewindInputStream::Read(void *ptr, size_t read_size)
 			memcpy(buffer + tail, ptr, nbytes);
 			tail += nbytes;
 
-			assert(tail == (size_t)input.GetOffset());
+			assert(tail == (size_t)input->GetOffset());
 		}
 
 		CopyAttributes();
@@ -125,7 +124,7 @@ RewindInputStream::Seek(offset_type new_offset)
 
 		assert(!ReadingFromBuffer() ||
 		       head == (size_t)offset);
-		assert(tail == (size_t)input.GetOffset());
+		assert(tail == (size_t)input->GetOffset());
 
 		head = (size_t)new_offset;
 		offset = new_offset;
@@ -138,8 +137,8 @@ RewindInputStream::Seek(offset_type new_offset)
 	}
 }
 
-InputStream *
-input_rewind_open(InputStream *is)
+InputStreamPtr
+input_rewind_open(InputStreamPtr is)
 {
 	assert(is != nullptr);
 	assert(!is->IsReady() || is->GetOffset() == 0);
@@ -148,5 +147,5 @@ input_rewind_open(InputStream *is)
 		/* seekable resources don't need this plugin */
 		return is;
 
-	return new RewindInputStream(is);
+	return InputStreamPtr(new RewindInputStream(std::move(is)));
 }

src/input/plugins/RewindInputPlugin.hxx

@@ -28,10 +28,9 @@
 #define MPD_INPUT_REWIND_HXX
 
 #include "check.h"
+#include "input/Ptr.hxx"
 
-class InputStream;
-
-InputStream *
-input_rewind_open(InputStream *is);
+InputStreamPtr
+input_rewind_open(InputStreamPtr is);
 
 #endif

test/test_rewind.cxx

@@ -61,8 +61,8 @@ public:
 					      "foo bar");
 		CPPUNIT_ASSERT(sis->IsReady());
 
-		InputStream *ris = input_rewind_open(sis);
-		CPPUNIT_ASSERT(ris != sis);
+		auto ris = input_rewind_open(InputStreamPtr(sis));
+		CPPUNIT_ASSERT(ris.get() != sis);
 		CPPUNIT_ASSERT(ris != nullptr);
 
 		const std::lock_guard<Mutex> protect(mutex);