util, io, net, ...: use "#pragma once"

src/util/AllocatedString.hxx

@@ -1,8 +1,7 @@
 // SPDX-License-Identifier: BSD-2-Clause
 // author: Max Kellermann <max.kellermann@gmail.com>
 
-#ifndef ALLOCATED_STRING_HXX
-#define ALLOCATED_STRING_HXX
+#pragma once
 
 #include "StringPointer.hxx"
 
@@ -164,5 +163,3 @@ public:
 
 	using BasicAllocatedString::operator=;
 };
-
-#endif

src/util/Cast.hxx

@@ -1,8 +1,7 @@
 // SPDX-License-Identifier: BSD-2-Clause
 // author: Max Kellermann <max.kellermann@gmail.com>
 
-#ifndef CAST_HXX
-#define CAST_HXX
+#pragma once
 
 #include "OffsetPointer.hxx"
 
@@ -55,5 +54,3 @@ ContainerCast(const A &a, const A C::*member)
 {
 	return *OffsetCast<const C, const A>(&a, -ContainerAttributeOffset<C, A>(member));
 }
-
-#endif

src/util/CharUtil.hxx

@@ -1,8 +1,7 @@
 // SPDX-License-Identifier: BSD-2-Clause
 // author: Max Kellermann <max.kellermann@gmail.com>
 
-#ifndef CHAR_UTIL_HXX
-#define CHAR_UTIL_HXX
+#pragma once
 
 #ifdef _UNICODE
 #include "WCharUtil.hxx"
@@ -140,5 +139,3 @@ IsHexDigit(char ch) noexcept
 		(ch >= 'a' && ch <= 'f') ||
 		(ch >= 'A' && ch <= 'F');
 }
-
-#endif

src/util/DeleteDisposer.hxx

@@ -1,8 +1,7 @@
 // SPDX-License-Identifier: BSD-2-Clause
 // author: Max Kellermann <max.kellermann@gmail.com>
 
-#ifndef DELETE_DISPOSER_HXX
-#define DELETE_DISPOSER_HXX
+#pragma once
 
 /**
  * A disposer for boost::intrusive that invokes the "delete" operator
@@ -15,5 +14,3 @@ public:
 		delete t;
 	}
 };
-
-#endif

src/util/DynamicFifoBuffer.hxx

@@ -1,8 +1,7 @@
 // SPDX-License-Identifier: BSD-2-Clause
 // author: Max Kellermann <max.kellermann@gmail.com>
 
-#ifndef DYNAMIC_FIFO_BUFFER_HXX
-#define DYNAMIC_FIFO_BUFFER_HXX
+#pragma once
 
 #include "ForeignFifoBuffer.hxx"
 
@@ -91,5 +90,3 @@ public:
 protected:
 	using ForeignFifoBuffer<T>::GetBuffer;
 };
-
-#endif

src/util/Exception.hxx

@@ -1,8 +1,7 @@
 // SPDX-License-Identifier: BSD-2-Clause
 // author: Max Kellermann <max.kellermann@gmail.com>
 
-#ifndef EXCEPTION_HXX
-#define EXCEPTION_HXX
+#pragma once
 
 #include <exception>
 #include <string>
@@ -113,5 +112,3 @@ std::string
 GetFullMessage(std::exception_ptr ep,
 	       const char *fallback="Unknown exception",
 	       const char *separator="; ") noexcept;
-
-#endif

src/util/PrintException.hxx

@@ -2,8 +2,7 @@
 // Copyright CM4all GmbH
 // author: Max Kellermann <mk@cm4all.com>
 
-#ifndef PRINT_EXCEPTION_HXX
-#define PRINT_EXCEPTION_HXX
+#pragma once
 
 #include <exception>
 
@@ -15,5 +14,3 @@ PrintException(const std::exception &e) noexcept;
 
 void
 PrintException(const std::exception_ptr &ep) noexcept;
-
-#endif

src/util/ScopeExit.hxx

@@ -1,8 +1,7 @@
 // SPDX-License-Identifier: BSD-2-Clause
 // author: Max Kellermann <max.kellermann@gmail.com>
 
-#ifndef SCOPE_EXIT_HXX
-#define SCOPE_EXIT_HXX
+#pragma once
 
 #include <utility>
 
@@ -64,5 +63,3 @@ struct ScopeExitTag {
  * Boost's compile-time and runtime bloat.
  */
 #define AtScopeExit(...) auto ScopeExitName(__LINE__) = ScopeExitTag() + [__VA_ARGS__]()
-
-#endif

src/util/ShallowCopy.hxx

@@ -2,8 +2,7 @@
 // Copyright CM4all GmbH
 // author: Max Kellermann <mk@cm4all.com>
 
-#ifndef SHALLOW_COPY_HXX
-#define SHALLOW_COPY_HXX
+#pragma once
 
 /**
  * A tag for overloading copying constructors, telling them to make
@@ -11,5 +10,3 @@
  * duplicating the referenced objects).
  */
 struct ShallowCopy {};
-
-#endif

src/util/StringAPI.hxx

@@ -1,8 +1,7 @@
 // SPDX-License-Identifier: BSD-2-Clause
 // author: Max Kellermann <max.kellermann@gmail.com>
 
-#ifndef STRING_API_HXX
-#define STRING_API_HXX
+#pragma once
 
 #include <cstring>
 
@@ -193,5 +192,3 @@ DuplicateString(const char *p) noexcept
 {
 	return strdup(p);
 }
-
-#endif

src/util/StringBuffer.hxx

@@ -1,8 +1,7 @@
 // SPDX-License-Identifier: BSD-2-Clause
 // author: Max Kellermann <max.kellermann@gmail.com>
 
-#ifndef STRING_BUFFER_HXX
-#define STRING_BUFFER_HXX
+#pragma once
 
 #include <array>
 
@@ -89,5 +88,3 @@ public:
 
 template<std::size_t CAPACITY>
 class StringBuffer : public BasicStringBuffer<char, CAPACITY> {};
-
-#endif

src/util/StringPointer.hxx

@@ -1,8 +1,7 @@
 // SPDX-License-Identifier: BSD-2-Clause
 // author: Max Kellermann <max.kellermann@gmail.com>
 
-#ifndef STRING_POINTER_HXX
-#define STRING_POINTER_HXX
+#pragma once
 
 #include <cstddef>
 
@@ -52,5 +51,3 @@ public:
 		return *value == SENTINEL;
 	}
 };
-
-#endif