ObjFW  Check-in [5ea06b70ce]

name: macos-13
on: [push, pull_request]
jobs:
  tests:
    runs-on: macos-13
    strategy:
      matrix:
        configure_flags:
          - 
          - --disable-threads
          - --disable-threads --disable-sockets
          - --disable-threads --disable-files
          - --disable-threads --disable-sockets --disable-files
          - --disable-sockets
          - --disable-sockets --disable-files
          - --disable-files
          - --disable-shared
    steps:
    - name: Install dependencies
      run: brew install autoconf automake
    - uses: actions/checkout@v2
    - name: autogen.sh
      run: ./autogen.sh
    - name: configure
      run: ./configure ${{ matrix.configure_flags }}
    - name: make
      run: make -j$(sysctl -n hw.logicalcpu)
    - name: make check
      run: make check
    - name: make install
      run: sudo make install

Legend:
 * Changes of existing features or bugfixes
 + New features

This file only contains the most significant changes.

ObjFW 0.90.2 -> ObjFW 1.0, 2023-08-29
 + First stable release with stable API and ABI
 * Too many changes to list, as it has been almost 6 years since the last
   release. See commits in the repository for details.

ObjFW 0.90.1 -> ObjFW 0.90.2, 2017-10-23
 * Fix shadowed variables which caused many bugs (e.g. using the wrong object)
 * Many, many nullability fixes
 * OFTCPSocket: Fix exception not being retained for async connect
 * OFThread: Fix setting the name on the wrong thread
 * OFMutableSet: Fix missing override for -[copy]
 * configure: Fix posix_spawnp check
 * Xcode project: Set the correct version for the bridge
 * Better check for iOS
 * tests: Fix testing the wrong OFKernelEventObserver

ObjFW 0.90 -> ObjFW 0.90.1, 2017-08-20
 * OFData: Fix -[description]
 * OFFileManager: Set errno to 0 before readdir()
 * OFDate: Add -[localMinute]
 * OFTarArchiveEntry: Fix prefix handling for ustar
 * OFZIPArchive: Fix uncompressed + data descriptor
 * OFArray: Fix MessagePack encoding
 * of_asprintf: Don't require set up OFLocalization
 * OFGZIPStream: Add missing documentation
 * Fix a linker warning on OpenBSD/SPARC64
 * Remove the OFFile b modes from MorphOS
   (they were already removed for all other OSes)

ObjFW 0.8.1 -> ObjFW 0.90, 2017-08-01
 + New classes: OFFileManager, OFGZIPStream, OFTarArchive, OFTarArchiveEntry
		OFHMAC, OFSandbox, OFHTTPCookie, OFHTTPCookieManager,
		OFLocalization
 + New platforms: Nintendo 3DS, MorphOS
 + New lookup assembly for platforms: SPARC64/ELF, ARM64/ELF
 + New forwarding for: ARM64/ELF
 + New tools: objfw-new (to create boilerplate code)

 * OFHash was renamed to OFCryptoHash
 + PBKDF2
 + scrypt
 + Xcode project to build for iOS
 + String decomposition to NFD
 * OFFile modes simplified ('b' removed)

ObjFW 0.8 -> ObjFW 0.8.1, 2015-10-04
 * Adjust to __nullable / __nonnull being changed to _Nullable / _Nonnull in
   Clang 3.7 (this fixes compilation with Clang 3.7)
 * Blocks: Proper handling when called from a byref handler
 * Fix compilation on Solaris
 * Fix compilation for Wii, PSP and Nintendo DS
 * OFProcess: Send SIGTERM on close instead of SIGKILL
 * OFZIPArchive: Throw invalid format exception on failed seeks
 * Make sure of_hash_seed is never initialized to 0
 * Special cases for the Wii's weird network stack (fixes the tests)
 * Better length checks for write / send calls
 * Don't use -pedantic on platforms where it's broken by the system headers
 * Documentation fixes

ObjFW 0.7.1 -> ObjFW 0.8, 2015-08-14

 + An insanely huge amount of new APIs
 + New classes: OFHTTPServer, OFINICategory, OFINIFile, OFInflate64Stream,
   OFInflateStream, OFMapTable, OFRIPEMD160Hash, OFSHA224Hash, OFSHA256Hash,
   OFSHA384Hash, OFSHA512Hash, OFSettings, OFStdIOStream, OFSystemInfo,
   OFUDPSocket, OFZIPArchive, OFZIPArchiveEntry
 + New utils: ofzip, ofhash, ofhttp

 * OFProcess improvements for Win32
 + epoll support for OFKernelEventObserver
 * Rewritten OFMD5Hash and OFSHA1Hash
 * Reworked OFTLSSocket API (easier verification)
 * Unicode support updated to Unicode 8.0
 * OFURL: Proper escaping and unescaping

ObjFW 0.7 -> ObjFW 0.7.1, 2012-11-12
 + Support for Haiku
 * Autorelease pools now work properly without __thread
 * Incorrect framework version in Xcode project fixed
 * Documentation fixes and improvements
 * Blocks now only use 16 bits for the reference count in order to avoid
   problems with newer Clang versions
 * More use of OF_SENTINEL

ObjFW 0.6 -> ObjFW 0.7, 2012-10-27
 Again, the differences are more than in any release before, thus listing them
 all would be too much. The major differences are:
 + ObjFW now comes with its own runtime, which greatly increases performance
   compared to the GNU runtime and is even faster than the Apple runtime
   (using Clang >= 3.2 is recommended, but not necessary)
 * Support for the GNU runtime has been dropped
 + New, much faster autorelease pool implementation (now inside the runtime)

 * Strings are allocated faster now
 + Support for JSON5
 * All private methods use the prefix OF_ now instead of _, making it possible
   to use the _ prefix in applications
 * Most ObjC compiler feature checks are not part of configure anymore, making
   it possible to use the same installation with different compilers

ObjFW 0.5.4 -> ObjFW 0.6, 2012-02-27
 The differences between 0.5.4 and 0.6 are too big to list them all. However,
 the major new features are:
 * OFString, OFArray, OFDictionary, OFSet and OFCountedSet are now class
   clusters
 + Serialization and deserialization of objects into/from XML and JSON
 + New class OFIntrospection for introspecting classes
 + New class OFProcess for working with and controlling child processes
 * Lots of OFXMLParser and OFXMLElement improvements
 + OFHTTPRequests can have a delegate now for status updates and processing
   data as soon as it arrives
 + There are several backends for OFStreamObserver now, including kqueue, poll
   and select
 + SOCKS5 support for OFTCPSockets (client only)
 * Several API changes

ObjFW 0.5.3 -> ObjFW 0.5.4, 2011-08-30
 * The blocks runtime is now working correctly
 * Documentation fixes
 * -framework works with objfw-compile now
 + Support for QNX
 * Various small fixes

ObjFW 0.5.2 -> ObjFW 0.5.3, 2011-07-01
 * Lots of bugfixes, see Git log for details

ObjFW 0.5.1 -> ObjFW 0.5.2, 2011-04-25
 * Fix double-retain in OFList
 * Don't ignore the timeout in OFStreamObserver when using select()
 * Do -[OFURL copy] in a try block to prevent a leak when an exception occurs
 * Fix too big buffer in -[OFMutableString _applyTable:withSize:]
 * Call madvise() on the correct length variable so it covers the whole string
 * Fix a warning when sizeof(size_t) < sizeof(long long)
 * Skip possible BOMs when appending strings

ObjFW 0.5 -> ObjFW 0.5.1, 2011-04-21
 * Work around a wrong warning produced by Apple GCC 4.0.1 which would cause
   the build to fail due to -Werror
 * Call objc_thread_{add,remove} when using the GNU runtime to make sure the
   runtime knows about our thread
 * Detach a thread before restarting if it was never joined
 * Release the old return value when restarting a thread

ObjFW 0.4-alpha1 -> 0.5, 2011-04-09
 + %@ is now allowed in format strings
 + Added of_log for easy logging
 * Exceptions have one header per exception now
 * Lots of exception improvements
 * Huge improvements in XML handling
 * Improvements in socket handling, including improved API
 * OFStreamObserver is now thread-safe and stops the current observe call when
   the set of streams to observe is modified
 + New class OFURL
 + New class OFHTTPRequest
 + New class OFCondition
 * Improvements in objfw-compile
 + Blocks can be used together with Cocoa now
 + When linking ObjFW and Cocoa, OFAutoreleasePools are used by both now
 + Support for Base64
 + Use a real Xcode project instead of just calling make
 + Add Haiku to the list of supported platforms
 * Lots of small bugfixes and countless small changes. Read the commits!

ObjFW 0.3.1 -> 0.4-alpha1, 2011-01-03
 * ObjFW is now available under the terms of the QPL, GPLv2 and GPLv3
 + Support for blocks was added, including a blocks runtime
 + Added support for the new GNU runtime, introduced in GCC 4.6
 * Objects returned from collections are no longer retained and autoreleased
 + Added new classes OFXMLParser, OFXMLElement, OFXMLAttribute and
   OFXMLElementBuilder
 + Added new class OFStreamObserver to observe streams
 + Added new class OFDate for storing dates
 + Many new methods in almost all classes
 * OFAutoreleasePool was optimized
 * Handling of ASCII strings was optimized
 * OFSocket was renamed to OFStreamSocket
 * OFConstString was renamed to OFConstantString
 * objfw-compile now has a new syntax
 + objfw-compile can now compile libraries and plugins
 * Many small changes and new features that would be too much to list here
   The diff between 0.3.1 and 0.4-alpha1 has almost 24000 lines!

ObjFW 0.3 -> 0.3.1, 2010-06-19
 * Fix a typo in OFMutableDictionary that prevented termination in case
   the last bucket is already used when the dictionary is resized
 * The mutations pointer is now correctly initialized in enumerators for
   immutable collections
 * The objc_sync test was still using the old threads API and was
   updated to use the new one now
 * PLATFORMS has been updated to be more specific

ObjFW 0.2.1 -> 0.3, 2010-05-09
 + Many new methods were added to different classes
 + A huge amount of methods was added to OFStream, allowing easy binary
   stream handling and even mixing string-based and binary operations
 + An optional write buffer was added to OFStream
 + OFSeekableStream was added for streams that allow seeking, for example
   OFFiles
 * OFNumber was completely reworked and got many new features now

 * The instance variable naming convention was changed so that properties work
 + Properties were added to the interfaces and are used if they are supported
   by the compiler
 + The library version is now included in the resulting dylib and libobjc is
   reexported now. Additionally, objfw-config offers --reexport now to produce
   libraries that link against ObjFW and reexport it

ObjFW 0.2 -> 0.2.1, 2010-03-14
 * Fix for OFNumbers not doing calculations
 * Improved -[hash] for OFNumbers with floats and doubles
 + Tests for OFNumber
 * Small optimization for OFArray's -[componentsJoinedByString:]
 * Documentation improvements
 * Updated copyright

ObjFW 0.1.2 -> 0.2, 2010-02-01
 + Support for ObjC 2 Fast Enumerations on every platform which has
   compiler support for fast enumerations
 + Support for ObjC 2 properties on every platform with compiler support
 + Fast Enumeration through arrays and dictionaries
 * OFIterator has been removed
 + OFEnumerator was added to replace OFIterator, which is more general
   and works with arrays and dictionaries

 * The interfaces of OFSocket and OFStream were cleaned up and some
   methods were moved to OFTCPSocket, as they make sense only there
 * File methods unavailable on Windows don't throw an exception at
   runtime anymore, but instead are not even in the interface on
   Windows. This way, it is a compile time error instead of a runtime
   error

ObjFW 0.1.1 -> 0.1.2, 2010-01-15
 * Fix a bug in OFMutableArray's -[removeObject:] and
   -[removeObjectIdenticalTo:] that could lead to not removing all
   occurrences of the object from the array and to out of bounds reads
 * Change the URL in the framework plist to the homepage

ObjFW 0.1 -> 0.1.1, 2010-01-04
 * Fix a missing out of range check for -[removeNItems:atIndex:] that
   allowed the programmer to specify too big ranges so it would crash
   instead of throwing an exception
 * Fix missing calls to -[retain] and -[autorelease] when getting
   objects from an OFArray or OFDictionary
 * Safer and more fault-tolerant way to remove objects from an
   OFMutableArray
 * Calling +[dealloc] throws an exception now. If someone really calls
   [SomeClass dealloc], this should be punished and not ignored, as
   this is a serious programmer error
 * -[readLineWithEncoding:] is more fault-tolerant now and does not
   lose data when it stumbles upon invalid encoding. Instead, it allows
   recalling with the correct encoding now

ObjFW 0.1, 2009-12-24
 + Initial release

PROJECT_NAME = "ObjFW"
OUTPUT_DIRECTORY = docs/
INPUT = src src/exceptions src/runtime
FILE_PATTERNS = *.h *.m
HTML_OUTPUT = .
HAVE_DOT = NO
GENERATE_LATEX = NO
HIDE_UNDOC_CLASSES = YES
HIDE_UNDOC_MEMBERS = YES
TYPEDEF_HIDES_STRUCT = YES

PREDEFINED = _Nonnull=						\
	     _Nullable=						\
	     DOXYGEN						\
	     OF_BOXABLE=					\
	     OF_CONSUMED=					\
	     OF_DESIGNATED_INITIALIZER=				\
	     OF_FILE_MANAGER_SUPPORTS_EXTENDED_ATTRIBUTES	\
	     OF_FILE_MANAGER_SUPPORTS_LINKS			\
	     OF_FILE_MANAGER_SUPPORTS_OWNER			\
	     OF_FILE_MANAGER_SUPPORTS_PERMISSIONS		\
	     OF_FILE_MANAGER_SUPPORTS_SYMLINKS			\
	     OF_GENERIC(...)=					\
	     OF_HAVE_APPLETALK					\
	     OF_HAVE_BLOCKS					\
	     OF_HAVE_FILES					\
	     OF_HAVE_IPV6					\
	     OF_HAVE_IPX					\
	     OF_HAVE_PLUGINS					\
	     OF_HAVE_SANDBOX					\
	     OF_HAVE_SOCKETS					\
	     OF_HAVE_THREADS					\
	     OF_HAVE_UNICODE_TABLES				\
	     OF_KINDOF(...)=					\
	     OF_NO_RETURN=					\
	     OF_NO_RETURN_FUNC=					\
	     OF_NULLABLE_PROPERTY(...)=				\
	     OF_NULL_RESETTABLE_PROPERTY(...)=			\
	     OF_REQUIRES_SUPER=					\
	     OF_RETURNS_INNER_POINTER=				\

	doxygen >/dev/null

release: docs
	echo "Generating tarball for version ${PACKAGE_VERSION}..."
	rm -fr objfw-${PACKAGE_VERSION} objfw-${PACKAGE_VERSION}.tar \
		objfw-${PACKAGE_VERSION}.tar.gz
	fossil tarball --name objfw-${PACKAGE_VERSION} current - \
		--exclude '.fossil*,.git*,objfw.spec' | ofarc -ttgz -xq -
	cp configure config.h.in objfw-${PACKAGE_VERSION}/
	ofarc -cq objfw-${PACKAGE_VERSION}.tar objfw-${PACKAGE_VERSION}
	rm -fr objfw-${PACKAGE_VERSION}
	gzip -9 objfw-${PACKAGE_VERSION}.tar
	rm -f objfw-${PACKAGE_VERSION}.tar
	gpg -b objfw-${PACKAGE_VERSION}.tar.gz || true



	rm -fr objfw-docs-${PACKAGE_VERSION} objfw-docs-${PACKAGE_VERSION}.tar \
		objfw-docs-${PACKAGE_VERSION}.tar.gz
	mv docs objfw-docs-${PACKAGE_VERSION}
	echo "Generating docs tarball for version ${PACKAGE_VERSION}..."
	ofarc -cq objfw-docs-${PACKAGE_VERSION}.tar \
		objfw-docs-${PACKAGE_VERSION}
	rm -fr objfw-docs-${PACKAGE_VERSION}
	gzip -9 objfw-docs-${PACKAGE_VERSION}.tar
	rm -f objfw-docs-${PACKAGE_VERSION}.tar
	gpg -b objfw-docs-${PACKAGE_VERSION}.tar.gz || true

GNU/Hurd
--------

  * OS Versions: 0.9
  * Architectures: i686
  * Compilers: Clang 14.0.6
  * Runtimes: ObjFW




Haiku
-----

  * OS version: r1-alpha4
  * Architectures: x86
  * Compilers: Clang 3.2, GCC 4.6.3
  * Runtimes: ObjFW


HP-UX
-----

  * OS versions: 11i v1, 11i v3
  * Architectures: Itanium, PA-RISC 2.0
  * Compilers: GCC 4.7.2, GCC 7.5.0
  * Runtimes: ObjFW
  * Notes: Exception handling on Itanium in 32 bit mode is broken, you need to
           use 64 bit mode by passing `OBJC="gcc -mlp64"` to `configure`.

  * Limitations: No files, no threads, no sockets, no shared libraries, not
                 tested on real hardware


Windows
-------

  * OS Versions: 98 SE, NT 4.0, XP, 7, 8, 8.1, 10, 11, Wine

  * Architectures: AArch64, AMD64, x86
  * Compilers: GCC 5.3.0 & 6.2.0 from msys2 (AMD64 & x86),
               Clang 3.9.0 from msys2 (x86),
               Clang 10.0 from msys2 (AMD64 & x86),
               Clang 14.0.4 from msys2 (AArch64)
  * Runtimes: ObjFW

<h1 id="thanks">Thanks</h1>

  * Thank you to [Jonathan Neuschäfer](https://github.com/neuschaefer) for
    reviewing the *entirety* (all 84k LoC at the time) of ObjFW's codebase in
    2017!
  * Thank you to [Hill Ma](https://github.com/mahiuchun) for donating an M1 Mac
    Mini to the project in 2022!


<h1 id="commercial-use">Commercial use</h1>

  If for whatever reason neither the terms of the QPL nor those of the GPL work
  for you, a proprietary license for ObjFW including support is available upon
  request. Just write a mail to js@nil.im and we can find a reasonable solution
  for both parties.

	enable_shared="no"
	enable_threads="no"
	enable_sockets="no"
	enable_files="no"
	;;
m68k-*-amigaos*)
	AS_IF([test x"$OBJCFLAGS" = x""], [OBJCFLAGS="-O0 -g"])
	OBJCFLAGS="$OBJCFLAGS -noixemul"
	OBJFW_OBJCFLAGS="$OBJFW_OBJCFLAGS -noixemul"
	CPPFLAGS="$CPPFLAGS -D__NO_NET_API"
	LDFLAGS="$LDFLAGS -noixemul"
	LIBS="$LIBS -ldebug"

	enable_files="yes"	# Required for reading ENV:

		AC_DEFINE(OF_HAVE_NETINET_IN_H, 1,
			[Whether we have netinet/in.h])
	])
	AC_CHECK_HEADER(netinet/tcp.h, [
		AC_DEFINE(OF_HAVE_NETINET_TCP_H, 1,
			[Whether we have netinet/tcp.h])
	])
	AC_CHECK_HEADERS([arpa/inet.h netdb.h sys/sockio.h])
	AC_CHECK_HEADERS([net/if.h], [], [], [
		#ifdef OF_HAVE_SYS_SOCKET_H
		# include <sys/socket.h>
		#endif
	])
	AC_CHECK_HEADERS([net/if_arp.h net/if_dl.h net/if_types.h])
	AC_CHECK_FUNCS([if_indextoname if_nametoindex if_nameindex])
	AC_CHECK_TYPES([struct sockaddr_dl], [], [], [
		#ifdef HAVE_SYS_TYPES_H
		# include <sys/types.h>
		#endif
		#ifdef HAVE_NET_IF_DL_H
		# include <net/if_dl.h>
		#endif
	])
	AC_CHECK_TYPES([struct lifconf], [], [], [
		#ifdef HAVE_NET_IF_H
		# include <net/if.h>
		#endif
	])
	AC_CHECK_MEMBERS([struct ifreq.ifr_hwaddr], [], [], [
		#ifdef HAVE_NET_IF_H
		# include <net/if.h>
		#endif
	])
	AC_CHECK_HEADER(sys/un.h, [
		AC_DEFINE(OF_HAVE_SYS_UN_H, 1, [Whether we have sys/un.h])
	])
	AC_CHECK_MEMBER([struct sockaddr_in6.sin6_addr], [
		AC_EGREP_CPP(egrep_cpp_yes, [
			#ifdef _WIN32

			#endif

			#ifdef AF_INET6
			egrep_cpp_yes
			#endif
		], [
			AC_DEFINE(OF_HAVE_IPV6, 1, [Whether we have IPv6])

			AC_CHECK_FUNCS(inet6_getscopeid)
		])
	], [
		dnl Work around a bug in autoconf 2.61 that creates a broken
		dnl configure if this branch is empty.
		:
	], [
		#ifdef _WIN32

		#ifdef __morphos__
		# error MorphOS has the struct but does not support it
		#endif

		#ifdef __MINT__
		# error Gives invalid argument at runtime
		#endif




	])

	AC_CHECK_HEADER(netipx/ipx.h, [
		AC_DEFINE(OF_HAVE_NETIPX_IPX_H, 1,
			[Whether we have netipx/ipx.h])
	])
	AC_CHECK_MEMBER(struct sockaddr_ipx.sipx_network, [], [
		AC_CHECK_MEMBER(struct sockaddr_ipx.sa_netnum, [], [
			AC_CHECK_MEMBER(struct sockaddr_ipx.sipx_addr.x_port,
			[], [], [
				#ifdef HAVE_SYS_TYPES_H
				# include <sys/types.h>
				#endif

				#ifdef OF_HAVE_NETIPX_IPX_H
				# include <netipx/ipx.h>
				#endif

				[Whether we have select() or similar])
			AC_SUBST(OF_SELECT_KERNEL_EVENT_OBSERVER_M,
				"OFSelectKernelEventObserver.m")
		])
		;;
	esac




	AC_ARG_WITH(tls,
		AS_HELP_STRING([--with-tls], [
			enable TLS support using the specified library
			(yes, openssl, gnutls, securetransport or no)]))
	AS_IF([test x"$with_tls" = x""], [with_tls="yes"])
	tls_support="no"

				AC_CHECK_FUNCS(SSLCreateContext)
			], [])

			LIBS="$old_LIBS"
		])
	])
















	AS_IF([test x"$with_tls" = x"openssl" \
	    -o \( x"$with_tls" = x"yes" -a x"$tls_support" = x"no" \)], [
		case "$host_os" in
		morphos*)
			ssl="ssl_shared"
			crypto="crypto_shared"
			;;

				TLS_LIBS="-l$ssl -l$crypto $TLS_LIBS"

				AC_SUBST(OF_OPENSSL_TLS_STREAM_M,
					"OFOpenSSLTLSStream.m")
			])
		], [], [-l$crypto])
	])

	AS_IF([test x"$with_tls" = x"gnutls" \
	    -o \( x"$with_tls" = x"yes" -a x"$tls_support" = x"no" \)], [
		PKG_CHECK_MODULES(gnutls, [gnutls >= 3.5.0], [
			tls_support="GnuTLS"
			TLS_CPPFLAGS="$gnutls_CFLAGS $TLS_CPPFLAGS"
			TLS_LIBS="$gnutls_LIBS $TLS_LIBS"

			AC_SUBST(OF_GNUTLS_TLS_STREAM_M, "OFGnuTLSTLSStream.m")
		], [
			dnl Disable default action-if-not-found, which exits
			dnl configure with an error.
			:
		])
	])

	AS_IF([test x"$tls_support" != x"no"], [
		AC_SUBST(TLS, "tls")
		AC_SUBST(TLS_CPPFLAGS)
		AC_SUBST(TLS_LIBS)
		AC_DEFINE(HAVE_TLS_SUPPORT, 1,
			[Whether we have an implementation for TLS])

	AC_MSG_RESULT(yes)
], [
	AC_MSG_RESULT(no)
	OBJCFLAGS="$old_OBJCFLAGS"
])

AS_IF([test x"$GOBJC" = x"yes"], [
	OBJCFLAGS="$OBJCFLAGS -Wwrite-strings -Wpointer-arith"

	AC_ARG_ENABLE(werror,
		AS_HELP_STRING([--disable-werror], [do not build with -Werror]))
	AS_IF([test x"$enable_werror" != x"no"], [
		OBJCFLAGS="$OBJCFLAGS -Werror"
	])

	old_OBJCFLAGS="$OBJCFLAGS"
	OBJCFLAGS="$OBJCFLAGS -Werror"
	AC_MSG_CHECKING(whether we need -Wno-strict-aliasing due to GCC bugs)
	AC_COMPILE_IFELSE([
		AC_LANG_PROGRAM([
			#ifdef __has_attribute
			# if __has_attribute(objc_root_class)
			__attribute__((__objc_root_class__))
			# endif

			} object;
		], [
			Foo *test = (Foo *)&object;
			(void)test; /* Get rid of unused variable warning */
		])
	], [
		AC_MSG_RESULT(no)
		OBJCFLAGS="$old_OBJCFLAGS"
	], [
		AC_MSG_RESULT(yes)
		OBJCFLAGS="$old_OBJCFLAGS -Wno-strict-aliasing"
	])

	old_OBJCFLAGS="$OBJCFLAGS"
	OBJCFLAGS="$OBJCFLAGS -Werror"
	AC_MSG_CHECKING(
	    whether we need -Wno-unused-property-ivar due to Clang bugs)
	AC_COMPILE_IFELSE([
		AC_LANG_SOURCE([
			#ifdef __has_attribute
			# if __has_attribute(objc_root_class)
			__attribute__((__objc_root_class__))

			{
				return (Foo *)0;
			}
			@end
		])
	], [
		AC_MSG_RESULT(no)
		OBJCFLAGS="$old_OBJCFLAGS"
	], [
		AC_MSG_RESULT(yes)
		OBJCFLAGS="$old_OBJCFLAGS -Wno-unused-property-ivar"
	])

	old_OBJCFLAGS="$OBJCFLAGS"
	OBJCFLAGS="$OBJCFLAGS -Wcast-align -Werror"
	AC_MSG_CHECKING(whether -Wcast-align is buggy)
	AC_COMPILE_IFELSE([
		AC_LANG_SOURCE([
			#ifdef __has_attribute
			# if __has_attribute(objc_root_class)
			__attribute__((__objc_root_class__))
			# endif

				struct objc_class *c = _isa;
				(void)c;
			}
			@end
		])
	], [
		AC_MSG_RESULT(no)
		OBJCFLAGS="$old_OBJCFLAGS -Wcast-align"
	], [
		AC_MSG_RESULT(yes)
		OBJCFLAGS="$old_OBJCFLAGS"
	])

	old_OBJCFLAGS="$OBJCFLAGS"
	OBJCFLAGS="$OBJCFLAGS -Wunreachable-code -Werror"
	AC_MSG_CHECKING(whether -Wunreachable-code can be used)
	AC_COMPILE_IFELSE([
		AC_LANG_SOURCE([[
			#include <stdlib.h>

			struct objc_selector;
			typedef const struct objc_selector *SEL;

			{
				OF_DEALLOC_UNSUPPORTED
			}
			@end
		]])
	], [
		AC_MSG_RESULT(yes)
		OBJCFLAGS="$old_OBJCFLAGS -Wunreachable-code"
	], [
		AC_MSG_RESULT(no)
		OBJCFLAGS="$old_OBJCFLAGS"
	])

	old_OBJCFLAGS="$OBJCFLAGS"
	OBJCFLAGS="$OBJCFLAGS -Wdocumentation -Werror"
	AC_MSG_CHECKING(whether -Wdocumentation works correctly)
	AC_COMPILE_IFELSE([
		AC_LANG_SOURCE([
			/**
			 * @class Test conftest.m conftest.m
			 */
			#ifdef __has_attribute

			/**
			 * @struct Foo conftest.m conftest.m
			 */
			typedef struct {} Foo;
		])
	], [
		AC_MSG_RESULT(yes)
		OBJCFLAGS="$old_OBJCFLAGS -Wdocumentation"
	], [
		AC_MSG_RESULT(no)
		OBJCFLAGS="$old_OBJCFLAGS"
	])

	AS_IF([test x"$check_pedantic" = x"yes"], [
		old_OBJCFLAGS="$OBJCFLAGS"
		OBJCFLAGS="$OBJCFLAGS -pedantic -Werror"
		AC_MSG_CHECKING(whether -pedantic is buggy)
		AC_COMPILE_IFELSE([
			AC_LANG_SOURCE([
				#include <stdlib.h>

				#include <assert.h>

					 */
					assert(1);
				}
				@end
			])
		], [
			AC_MSG_RESULT(no)
			OBJCFLAGS="$old_OBJCFLAGS -pedantic"
		], [
			AC_MSG_RESULT(yes)
			OBJCFLAGS="$old_OBJCFLAGS"
		])
	])

	old_OBJCFLAGS="$OBJCFLAGS"
	OBJCFLAGS="$OBJCFLAGS -Werror"
	AC_MSG_CHECKING(whether we need -Wno-strict-prototypes)
	AC_COMPILE_IFELSE([
		AC_LANG_PROGRAM([
			#include <signal.h>
		], [
			signal(SIGINT, SIG_DFL);
		])
	], [
		AC_MSG_RESULT(no)
		OBJCFLAGS="$old_OBJCFLAGS"
	], [
		AC_MSG_RESULT(yes)
		OBJCFLAGS="$old_OBJCFLAGS -Wno-strict-prototypes"
	])

	AS_IF([test x"$ac_cv_header_complex_h" = x"yes"], [
		old_OBJCFLAGS="$OBJCFLAGS"
		OBJCFLAGS="$OBJCFLAGS -Werror"
		AC_MSG_CHECKING(whether we need -Wno-gnu-imaginary-constant)
		AC_COMPILE_IFELSE([
			AC_LANG_PROGRAM([
				#include <complex.h>
			], [
				complex float f = 0.5 + 0.5 * I;
				(void)f;
			])
		], [
			AC_MSG_RESULT(no)
			OBJCFLAGS="$old_OBJCFLAGS"
		], [
			AC_MSG_RESULT(yes)
			OBJCFLAGS="$old_OBJCFLAGS -Wno-gnu-imaginary-constant"
		])
	])
])

AS_IF([test x"$cross_compiling" = x"yes"], [
	AC_SUBST(BIN_PREFIX, "${host_alias}-")

OBJFW_SHARED_LIB = @OBJFW_SHARED_LIB@
OBJFW_STATIC_LIB = @OBJFW_STATIC_LIB@
OBJFW_FRAMEWORK = @OBJFW_FRAMEWORK@
OBJFW_AMIGA_LIB = @OBJFW_AMIGA_LIB@
OBJFW_LIB_MAJOR = 1
OBJFW_LIB_MINOR = 0
OBJFW_LIB_MAJOR_MINOR = ${OBJFW_LIB_MAJOR}.${OBJFW_LIB_MINOR}

OBJFWRT_SHARED_LIB = @OBJFWRT_SHARED_LIB@
OBJFWRT_STATIC_LIB = @OBJFWRT_STATIC_LIB@
OBJFWRT_FRAMEWORK = @OBJFWRT_FRAMEWORK@
OBJFWRT_AMIGA_LIB = @OBJFWRT_AMIGA_LIB@
OBJFWRT_LIB_MAJOR = 1
OBJFWRT_LIB_MINOR = 0
OBJFWRT_LIB_MAJOR_MINOR = ${OBJFWRT_LIB_MAJOR}.${OBJFWRT_LIB_MINOR}

OBJFWBRIDGE_SHARED_LIB = @OBJFWBRIDGE_SHARED_LIB@
OBJFWBRIDGE_STATIC_LIB = @OBJFWBRIDGE_STATIC_LIB@
OBJFWBRIDGE_FRAMEWORK = @OBJFWBRIDGE_FRAMEWORK@

    OFHTTPClientDelegate>
{
	OFHTTPClient *_HTTPClient;
	OFUnichar _uppercaseTable[0x110000];
	OFUnichar _lowercaseTable[0x110000];
	OFUnichar _titlecaseTable[0x110000];
	OFUnichar _caseFoldingTable[0x110000];


	char _uppercaseTableUsed[0x1100];
	char _lowercaseTableUsed[0x1100];
	char _titlecaseTableUsed[0x1100];
	char _caseFoldingTableUsed[0x1100];


	size_t _uppercaseTableSize;
	size_t _lowercaseTableSize;
	size_t _titlecaseTableSize;
	size_t _caseFoldingTableSize;


	enum {
		stateUnicodeData,
		stateCaseFolding
	} _state;
}

- (void)parseUnicodeData: (OFHTTPResponse *)response;
- (void)parseCaseFolding: (OFHTTPResponse *)response;

- (void)writeFiles;
- (void)writeTablesToFile: (OFString *)path;
- (void)writeHeaderToFile: (OFString *)path;
@end

		_HTTPClient = [[OFHTTPClient alloc] init];
		_HTTPClient.delegate = self;

		_uppercaseTableSize           = SIZE_MAX;
		_lowercaseTableSize           = SIZE_MAX;
		_titlecaseTableSize           = SIZE_MAX;
		_caseFoldingTableSize         = SIZE_MAX;


	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

		_uppercaseTable[codePoint] = (OFUnichar)[[components
		    objectAtIndex: 12] unsignedLongLongValueWithBase: 16];
		_lowercaseTable[codePoint] = (OFUnichar)[[components
		    objectAtIndex: 13] unsignedLongLongValueWithBase: 16];
		_titlecaseTable[codePoint] = (OFUnichar)[[components
		    objectAtIndex: 14] unsignedLongLongValueWithBase: 16];






























		objc_autoreleasePoolPop(pool2);
	}




	[OFStdOut writeLine: @" done"];

	[OFStdOut writeString: @"Downloading CaseFolding.txt…"];
	_state = stateCaseFolding;
	request = [OFHTTPRequest requestWithIRI:
	    [OFIRI IRIWithString: caseFoldingIRI]];
	[_HTTPClient asyncPerformRequest: request];

	}

	[OFStdOut writeLine: @" done"];

	[self writeFiles];
}





















































- (void)writeFiles
{
	OFIRI *IRI;

	[OFStdOut writeString: @"Writing files…"];

	IRI = [OFIRI fileIRIWithPath: @"../../src/unicode.m"];

				       mode: @"w"];

	[file writeString: COPYRIGHT
	    @"#include \"config.h\"\n"
	    @"\n"
	    @"#import \"OFString.h\"\n\n"
	    @"static const OFUnichar emptyPage[0x100] = { 0 };\n"

	    @"\n"];

	/* Write uppercasePage%u */
	for (OFUnichar i = 0; i < 0x110000; i += 0x100) {
		bool isEmpty = true;

		for (OFUnichar j = i; j < i + 0x100; j++) {

			[file writeString: @"};\n\n"];

			objc_autoreleasePoolPop(pool2);
		}
	}





























































	/*



























































	 * Those are currently set to the last index.
	 * But from now on, we need the size.
	 */
	_uppercaseTableSize++;
	_lowercaseTableSize++;
	_titlecaseTableSize++;
	_caseFoldingTableSize++;



	/* Write OFUnicodeUppercaseTable */
	[file writeFormat: @"const OFUnichar *const "
			   @"OFUnicodeUppercaseTable[0x%X] = {\n\t",
			   _uppercaseTableSize];

	for (OFUnichar i = 0; i < _uppercaseTableSize; i++) {

			else
				[file writeString: @", "];
		}
	}

	[file writeString: @"\n};\n\n"];














































	objc_autoreleasePoolPop(pool);
}

- (void)writeHeaderToFile: (OFString *)path
{
	void *pool = objc_autoreleasePoolPush();
	OFFile *file = [OFFile fileWithPath: path
				       mode: @"w"];

	[file writeString: COPYRIGHT
	    @"#import \"OFString.h\"\n\n"];

	[file writeFormat:
	    @"#define OFUnicodeUppercaseTableSize 0x%X\n"
	    @"#define OFUnicodeLowercaseTableSize 0x%X\n"
	    @"#define OFUnicodeTitlecaseTableSize 0x%X\n"
	    @"#define OFUnicodeCaseFoldingTableSize 0x%X\n\n",


	    _uppercaseTableSize, _lowercaseTableSize, _titlecaseTableSize,
	    _caseFoldingTableSize];


	[file writeString:
	    @"#ifdef __cplusplus\n"
	    @"extern \"C\" {\n"
	    @"#endif\n"
	    @"extern const OFUnichar *const _Nonnull\n"
	    @"    OFUnicodeUppercaseTable[OFUnicodeUppercaseTableSize];\n"
	    @"extern const OFUnichar *const _Nonnull\n"
	    @"    OFUnicodeLowercaseTable[OFUnicodeLowercaseTableSize];\n"
	    @"extern const OFUnichar *const _Nonnull\n"
	    @"    OFUnicodeTitlecaseTable[OFUnicodeTitlecaseTableSize];\n"
	    @"extern const OFUnichar *const _Nonnull\n"
	    @"    OFUnicodeCaseFoldingTable[OFUnicodeCaseFoldingTableSize];\n"






	    @"#ifdef __cplusplus\n"
	    @"}\n"
	    @"#endif\n"];

	objc_autoreleasePoolPop(pool);
}
@end

	    ObjFW.h				\
	    macros.h				\
	    objfw-defs.h			\
	    platform.h				\
	    ${USE_INCLUDES_ATOMIC}

SRCS += OFASPrintF.m			\


	OFArchiveIRIHandler.m		\
	OFBase64.m			\
	OFBitSetCharacterSet.m		\

	OFCRC16.m			\
	OFCRC32.m			\
	OFConcreteArray.m		\
	OFConcreteColor.m		\
	OFConcreteCountedSet.m		\
	OFConcreteData.m		\
	OFConcreteDate.m		\
	OFConcreteDictionary.m		\
	OFConcreteMutableArray.m	\
	OFConcreteMutableData.m		\
	OFConcreteMutableDictionary.m	\
	OFConcreteMutableSet.m		\
	OFConcreteNumber.m		\
	OFConcreteSet.m			\
	OFConcreteSubarray.m		\
	OFConcreteValue.m		\
	OFEmbeddedIRIHandler.m		\
	OFHuffmanTree.m			\
	OFINIFileSettings.m		\
	OFInvertedCharacterSet.m	\
	OFLHADecompressingStream.m	\





	OFMutableUTF8String.m		\



	OFRangeCharacterSet.m		\


	OFSandbox.m			\
	OFStrFTime.m			\
	OFStrPTime.m			\
	OFSubarray.m			\
	OFSubdata.m			\
	OFTaggedPointerColor.m		\
	OFTaggedPointerDate.m		\
	OFTaggedPointerNumber.m		\
	OFUTF8String.m			\
	${LIBBASES_M}			\
	${RUNTIME_AUTORELEASE_M}	\
	${RUNTIME_INSTANCE_M}		\
	${UNICODE_M}
SRCS_FILES += OFFileIRIHandler.m
SRCS_SOCKETS += OFAsyncIPSocketConnector.m		\

# include <xlocale.h>
#endif

#ifdef OF_HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif

#import "OFASPrintF.h"
#import "OFString.h"
#import "OFLocale.h"

#import "OFInitializationFailedException.h"

#define maxSubformatLen 64

	OFSocketDeinit();
#endif
}

int
OFApplicationMain(int *argc, char **argv[], id <OFApplicationDelegate> delegate)
{





	[[OFLocale alloc] init];

	app = [[OFApplication alloc] of_init];

#ifdef OF_WINDOWS
	if ([OFSystemInfo isWindowsNT]) {
		wchar_t **wargv, **wenvp;
		int wargc, si = 0;

		__wgetmainargs(&wargc, &wargv, &wenvp, _CRT_glob, &si);

		[app of_setArgumentCount: argc
		       andArgumentValues: argv
		    andWideArgumentCount: wargc
		   andWideArgumentValues: wargv];
	} else
#endif
		[app of_setArgumentCount: argc andArgumentValues: argv];

 * @param objects A C array of objects
 * @param count The length of the C array
 * @return A new autoreleased OFArray
 */
+ (instancetype)arrayWithObjects: (ObjectType const _Nonnull *_Nonnull)objects
			   count: (size_t)count;

/**
 * @brief Initializes an OFArray with no objects.
 *
 * @return An initialized OFArray
 */
- (instancetype)init OF_DESIGNATED_INITIALIZER;

/**
 * @brief Initializes an OFArray with the specified object.
 *
 * @param object An object
 * @return An initialized OFArray
 */
- (instancetype)initWithObject: (ObjectType)object;

 *	  the specified length.
 *
 * @param objects A C array of objects
 * @param count The length of the C array
 * @return An initialized OFArray
 */
- (instancetype)initWithObjects: (ObjectType const _Nonnull *_Nonnull)objects
			  count: (size_t)count OF_DESIGNATED_INITIALIZER;

/**
 * @brief Returns an OFEnumerator to enumerate through all objects of the array.
 *
 * @return An OFEnumerator to enumerate through all objects of the array
 */
- (OFEnumerator OF_GENERIC(ObjectType) *)objectEnumerator;

#include "config.h"

#include <stdarg.h>
#include <stdlib.h>

#import "OFArray.h"
#import "OFArray+Private.h"
#import "OFConcreteArray.h"
#import "OFData.h"
#import "OFNull.h"
#import "OFString.h"
#import "OFSubarray.h"

#import "OFEnumerationMutationException.h"
#import "OFInvalidArgumentException.h"

			       depth: (size_t)depth;
@end

@interface OFPlaceholderArray: OFArray
@end

@implementation OFPlaceholderArray
#ifdef __clang__
/* We intentionally don't call into super, so silence the warning. */
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wunknown-pragmas"
# pragma clang diagnostic ignored "-Wobjc-designated-initializers"
#endif
- (instancetype)init
{
	return (id)[[OFConcreteArray alloc] init];
}

- (instancetype)initWithObject: (id)object
{
	return (id)[[OFConcreteArray alloc] initWithObject: object];
}

- (instancetype)initWithObjects: (id)firstObject, ...
{
	id ret;
	va_list arguments;

	va_start(arguments, firstObject);
	ret = [[OFConcreteArray alloc] initWithObject: firstObject
					    arguments: arguments];
	va_end(arguments);

	return ret;
}

- (instancetype)initWithObject: (id)firstObject
		     arguments: (va_list)arguments
{
	return (id)[[OFConcreteArray alloc] initWithObject: firstObject
						 arguments: arguments];
}

- (instancetype)initWithArray: (OFArray *)array
{
	return (id)[[OFConcreteArray alloc] initWithArray: array];
}

- (instancetype)initWithObjects: (id const *)objects
			  count: (size_t)count
{
	return (id)[[OFConcreteArray alloc] initWithObjects: objects
						      count: count];
}
#ifdef __clang__




# pragma clang diagnostic pop




#endif



OF_SINGLETON_METHODS




@end

@implementation OFArray
+ (void)initialize
{
	if (self == [OFArray class])
		object_setClass((id)&placeholder, [OFPlaceholderArray class]);
}

+ (instancetype)alloc
{
	if (self == [OFArray class])
		return (id)&placeholder;

{
	return [[[self alloc] initWithObjects: objects
					count: count] autorelease];
}

- (instancetype)init
{
	if ([self isMemberOfClass: [OFArray class]] ||
	    [self isMemberOfClass: [OFMutableArray class]]) {
		@try {
			[self doesNotRecognizeSelector: _cmd];
		} @catch (id e) {
			[self release];
			@throw e;
		}

		abort();
	}

	return [super init];
}

- (instancetype)initWithObject: (id)object
{





	return [self initWithObjects: &object count: 1];
}

- (instancetype)initWithObjects: (id)firstObject, ...
{
	id ret;
	va_list arguments;

	va_start(arguments, firstObject);
	ret = [self initWithObject: firstObject arguments: arguments];
	va_end(arguments);

	return ret;
}

- (instancetype)initWithObject: (id)firstObject arguments: (va_list)arguments
{
	size_t count = 1;
	va_list argumentsCopy;
	id *objects;

	if (firstObject == nil)
		return [self init];

	va_copy(argumentsCopy, arguments);
	while (va_arg(argumentsCopy, id) != nil)
		count++;

	@try {
		objects = OFAllocMemory(count, sizeof(id));
	} @catch (id e) {
		[self release];
		@throw e;
	}

	@try {
		objects[0] = firstObject;

		for (size_t i = 1; i < count; i++) {
			objects[i] = va_arg(arguments, id);
			OFEnsure(objects[i] != nil);
		}

		self = [self initWithObjects: objects count: count];
	} @finally {
		OFFreeMemory(objects);
	}

	return self;
}

- (instancetype)initWithArray: (OFArray *)array
{
	id *objects;
	size_t count;

	@try {
		count = array.count;
		objects = OFAllocMemory(count, sizeof(id));

		[array getObjects: objects
			  inRange: OFMakeRange(0, count)];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	@try {
		self = [self initWithObjects: objects count: count];
	} @finally {
		OFFreeMemory(objects);
	}

	return self;
}

#ifdef __clang__
/* We intentionally don't call into super, so silence the warning. */
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wunknown-pragmas"
# pragma clang diagnostic ignored "-Wobjc-designated-initializers"
#endif
- (instancetype)initWithObjects: (id const *)objects
			  count: (size_t)count
{
	OF_INVALID_INIT_METHOD
}
#ifdef __clang__
# pragma clang diagnostic pop
#endif

- (size_t)count
{
	OF_UNRECOGNIZED_SELECTOR
}

- (void)getObjects: (id *)buffer inRange: (OFRange)range

	id *buffer;

	if (range.length > SIZE_MAX - range.location ||
	    range.location + range.length < self.count)
		@throw [OFOutOfRangeException exception];

	if (![self isKindOfClass: [OFMutableArray class]])
		return [[[OFSubarray alloc] initWithArray: self
						    range: range] autorelease];

	buffer = OFAllocMemory(range.length, sizeof(*buffer));
	@try {
		[self getObjects: buffer inRange: range];

		ret = [OFArray arrayWithObjects: buffer count: range.length];
	} @finally {

	return new;
}

- (int)countByEnumeratingWithState: (OFFastEnumerationState *)state
			   objects: (id *)objects
			     count: (int)count
{
	static unsigned long dummyMutations;
	OFRange range = OFMakeRange(state->state, count);

	if (range.length > SIZE_MAX - range.location)
		@throw [OFOutOfRangeException exception];

	if (range.location + range.length > self.count)
		range.length = self.count - range.location;

	[self getObjects: objects inRange: range];

	if (range.location + range.length > ULONG_MAX)
		@throw [OFOutOfRangeException exception];

	state->state = (unsigned long)(range.location + range.length);
	state->itemsPtr = objects;
	state->mutationsPtr = &dummyMutations;

	return (int)range.length;
}

- (OFEnumerator *)objectEnumerator
{
	return [[[OFArrayEnumerator alloc] initWithArray: self

struct class _NSConcreteGlobalBlock_metaclass;
struct class _NSConcreteMallocBlock_metaclass;
# endif
#endif

static struct {
	Class isa;
} allocFailedException;

#ifndef OF_HAVE_ATOMIC_OPS
# define numSpinlocks 8	/* needs to be a power of 2 */
# define SPINLOCK_HASH(p) ((uintptr_t)p >> 4) & (numSpinlocks - 1)
static OFSpinlock blockSpinlocks[numSpinlocks];
static OFSpinlock byrefSpinlocks[numSpinlocks];
#endif

void *
_Block_copy(const void *block_)
{
	struct Block *block = (struct Block *)block_;

	if ([(id)block isMemberOfClass: (Class)&_NSConcreteStackBlock]) {
		struct Block *copy;

		if ((copy = malloc(block->descriptor->size)) == NULL) {
			object_setClass((id)&allocFailedException,
			    [OFAllocFailedException class]);
			@throw (OFAllocFailedException *)&allocFailedException;

		}
		memcpy(copy, block, block->descriptor->size);

		object_setClass((id)copy, (Class)&_NSConcreteMallocBlock);
		copy->flags++;

		if (block->flags & OFBlockHasCopyDispose)

		struct Byref *src = (struct Byref *)src_;
		struct Byref **dst = (struct Byref **)dst_;

		src = src->forwarding;

		if ((src->flags & OFBlockRefCountMask) == 0) {
			if ((*dst = malloc(src->size)) == NULL) {
				object_setClass((id)&allocFailedException,
				    [OFAllocFailedException class]);
				@throw (OFAllocFailedException *)
				    &allocFailedException;
			}

			memcpy(*dst, src, src->size);
			(*dst)->flags =
			    ((*dst)->flags & ~OFBlockRefCountMask) | 1;
			(*dst)->forwarding = *dst;

}

- (instancetype)initWithRange: (OFRange)range
{
	return (id)[[OFRangeCharacterSet alloc] initWithRange: range];
}





OF_SINGLETON_METHODS













@end

@implementation OFCharacterSet
+ (void)initialize
{
	if (self == [OFCharacterSet class])

		object_setClass((id)&placeholder,
		    [OFPlaceholderCharacterSet class]);
}

+ (instancetype)alloc
{
	if (self == [OFCharacterSet class])
		return (id)&placeholder;

{
	return [[[OFInvertedCharacterSet alloc]
	    initWithCharacterSet: self] autorelease];
}
@end

@implementation OFWhitespaceCharacterSet



















- (bool)characterIsMember: (OFUnichar)character
{
	switch (character) {
	case 0x0009:
	case 0x0020:
	case 0x00A0:
	case 0x1680:

	case 0x205F:
	case 0x3000:
		return true;
	default:
		return false;
	}
}

OF_SINGLETON_METHODS
@end

/**
 * @class OFColor OFColor.h ObjFW/OFColor.h
 *
 * @brief A class for storing a color.
 */
@interface OFColor: OFObject





#ifdef OF_HAVE_CLASS_PROPERTIES
@property (class, readonly, nonatomic) OFColor *black;
@property (class, readonly, nonatomic) OFColor *silver;
@property (class, readonly, nonatomic) OFColor *grey;
@property (class, readonly, nonatomic) OFColor *white;
@property (class, readonly, nonatomic) OFColor *maroon;
@property (class, readonly, nonatomic) OFColor *red;

 */

#include "config.h"

#include <math.h>

#import "OFColor.h"
#import "OFConcreteColor.h"
#import "OFOnce.h"
#import "OFString.h"
#import "OFTaggedPointerColor.h"


@interface OFPlaceholderColor: OFColor

@end

@interface OFConcreteColorSingleton: OFConcreteColor
@end











static struct {
	Class isa;
} placeholder;

#ifdef OF_OBJFW_RUNTIME
static const float allowedImprecision = 0.0000001;
#endif

@implementation OFPlaceholderColor





















- (instancetype)initWithRed: (float)red
		      green: (float)green
		       blue: (float)blue
		      alpha: (float)alpha
{
#ifdef OF_OBJFW_RUNTIME
	uint8_t redInt = nearbyintf(red * 255);
	uint8_t greenInt = nearbyintf(green * 255);
	uint8_t blueInt = nearbyintf(blue * 255);

	if (fabsf(red * 255 - redInt) < allowedImprecision &&
	    fabsf(green * 255 - greenInt) < allowedImprecision &&
	    fabsf(blue * 255 - blueInt) < allowedImprecision && alpha == 1) {
		id ret = [OFTaggedPointerColor colorWithRed: redInt
						      green: greenInt
						       blue: blueInt];

		if (ret != nil)
			return ret;
	}
#endif

	return (id)[[OFConcreteColor alloc] initWithRed: red
						  green: green
						   blue: blue
						  alpha: alpha];
}


OF_SINGLETON_METHODS


@end




@implementation OFConcreteColorSingleton



OF_SINGLETON_METHODS



@end


@implementation OFColor
+ (void)initialize
{
	if (self == [OFColor class])

		object_setClass((id)&placeholder, [OFPlaceholderColor class]);










}

+ (instancetype)alloc
{
	if (self == [OFColor class])
		return (id)&placeholder;

	return [super alloc];
}

#define PREDEFINED_COLOR(name, redValue, greenValue, blueValue)		   \
	static OFColor *name##Color = nil;				   \
									   \
	static void							   \
	initPredefinedColor_##name(void)				   \
	{								   \
		name##Color = [[OFConcreteColorSingleton alloc]		   \
		    initWithRed: redValue				   \
			  green: greenValue				   \
			   blue: blueValue				   \
			  alpha: 1];					   \
	}								   \
									   \
	+ (OFColor *)name						   \

}

- (instancetype)initWithRed: (float)red
		      green: (float)green
		       blue: (float)blue
		      alpha: (float)alpha
{

	if ([self isMemberOfClass: [OFColor class]]) {
		@try {





			[self doesNotRecognizeSelector: _cmd];




		} @catch (id e) {
			[self release];
			@throw e;
		}

		abort();
	}

	return [super init];
}

- (bool)isEqual: (id)object
{
	OFColor *other;
	float red, green, blue, alpha;
	float otherRed, otherGreen, otherBlue, otherAlpha;

	if (object == self)
		return true;

	if (![object isKindOfClass: [OFColor class]])
		return false;

	other = object;
	[self getRed: &red green: &green blue: &blue alpha: &alpha];
	[other getRed: &otherRed
		green: &otherGreen
		 blue: &otherBlue
		alpha: &otherAlpha];

	if (otherRed != red)
		return false;
	if (otherGreen != green)
		return false;
	if (otherBlue != blue)
		return false;
	if (otherAlpha != alpha)
		return false;

	return true;
}

- (unsigned long)hash
{
	float red, green, blue, alpha;
	unsigned long hash;
	float tmp;

	[self getRed: &red green: &green blue: &blue alpha: &alpha];

	OFHashInit(&hash);

	tmp = OFToLittleEndianFloat(red);
	for (uint_fast8_t i = 0; i < sizeof(float); i++)
		OFHashAddByte(&hash, ((char *)&tmp)[i]);

	tmp = OFToLittleEndianFloat(green);
	for (uint_fast8_t i = 0; i < sizeof(float); i++)
		OFHashAddByte(&hash, ((char *)&tmp)[i]);

	tmp = OFToLittleEndianFloat(blue);
	for (uint_fast8_t i = 0; i < sizeof(float); i++)
		OFHashAddByte(&hash, ((char *)&tmp)[i]);

	tmp = OFToLittleEndianFloat(alpha);




	for (uint_fast8_t i = 0; i < sizeof(float); i++)
		OFHashAddByte(&hash, ((char *)&tmp)[i]);

	OFHashFinalize(&hash);

	return hash;
}

- (void)getRed: (float *)red
	 green: (float *)green
	  blue: (float *)blue
	 alpha: (float *)alpha
{



	OF_UNRECOGNIZED_SELECTOR


}

- (OFString *)description
{
	float red, green, blue, alpha;

	[self getRed: &red green: &green blue: &blue alpha: &alpha];

	return [OFString stringWithFormat:
	    @"<%@ red=%f green=%f blue=%f alpha=%f>",
	    self.class, red, green, blue, alpha];
}
@end

#import "OFArray.h"

OF_ASSUME_NONNULL_BEGIN

@class OFMutableData;

@interface OFConcreteArray: OFArray
{
	OFMutableData *_array;
}
@end

OF_ASSUME_NONNULL_END

 * file.
 */

#include "config.h"

#include <stdarg.h>

#import "OFConcreteArray.h"
#import "OFConcreteMutableArray.h"
#import "OFConcreteSubarray.h"
#import "OFData.h"
#import "OFString.h"

#import "OFEnumerationMutationException.h"
#import "OFInvalidArgumentException.h"
#import "OFOutOfRangeException.h"

@implementation OFConcreteArray
- (instancetype)init
{
	self = [super init];

	@try {
		_array = [[OFMutableData alloc] initWithItemSize: sizeof(id)];
	} @catch (id e) {

	}

	return self;
}

- (instancetype)initWithObjects: (id const *)objects count: (size_t)count
{
	self = [super init];

	@try {
		bool ok = true;

		for (size_t i = 0; i < count; i++) {
			if (objects[i] == nil)
				ok = false;

			[objects[i] retain];
		}

		if (!ok)
			@throw [OFInvalidArgumentException exception];

		_array = [[OFMutableData alloc] initWithItemSize: sizeof(id)
							capacity: count];
		[_array addItems: objects count: count];
	} @catch (id e) {
		for (size_t i = 0; i < count; i++)
			[objects[i] release];

		[self release];
		@throw e;

		@throw [OFOutOfRangeException exception];

	if ([self isKindOfClass: [OFMutableArray class]])
		return [OFArray
		    arrayWithObjects: (id *)_array.items + range.location
			       count: range.length];

	return [[[OFConcreteSubarray alloc] initWithArray: self
						    range: range] autorelease];
}

- (bool)isEqual: (id)object
{
	OFArray *otherArray;
	id const *objects, *otherObjects;
	size_t count;

	if (object == self)
		return true;

	if (![object isKindOfClass: [OFConcreteArray class]] &&
	    ![object isKindOfClass: [OFConcreteMutableArray class]])
		return [super isEqual: object];

	otherArray = object;

	count = _array.count;

	if (count != otherArray.count)

	return hash;
}

- (int)countByEnumeratingWithState: (OFFastEnumerationState *)state
			   objects: (id *)objects
			     count: (int)count_
{
	static unsigned long dummyMutations;
	size_t count = _array.count;

	if (count > INT_MAX)
		/*
		 * Use the implementation from OFArray, which is slower, but can
		 * enumerate in chunks.
		 */
		return [super countByEnumeratingWithState: state
						  objects: objects
						    count: count_];

	if (state->state >= count)
		return 0;

	state->state = (unsigned long)count;
	state->itemsPtr = (id *)_array.items;
	state->mutationsPtr = &dummyMutations;

	return (int)count;
}

#ifdef OF_HAVE_BLOCKS
- (void)enumerateObjectsUsingBlock: (OFArrayEnumerationBlock)block
{

/*
 * Copyright (c) 2008-2023 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#import "OFColor.h"

OF_ASSUME_NONNULL_BEGIN

@interface OFConcreteColor: OFColor
{
	float _red, _green, _blue, _alpha;
}
@end

OF_ASSUME_NONNULL_END

/*
 * Copyright (c) 2008-2023 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#import "OFConcreteColor.h"

#import "OFInvalidArgumentException.h"

@implementation OFConcreteColor
- (instancetype)initWithRed: (float)red
		      green: (float)green
		       blue: (float)blue
		      alpha: (float)alpha
{
	self = [super init];

	@try {
		if (red < 0.0 || red > 1.0 ||
		    green < 0.0 || green > 1.0 ||
		    blue < 0.0 || blue > 1.0 ||
		    alpha < 0.0 || alpha > 1.0)
			@throw [OFInvalidArgumentException exception];

		_red = red;
		_green = green;
		_blue = blue;
		_alpha = alpha;
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (void)getRed: (float *)red
	 green: (float *)green
	  blue: (float *)blue
	 alpha: (float *)alpha
{
	*red = _red;
	*green = _green;
	*blue = _blue;

	if (alpha != NULL)
		*alpha = _alpha;
}
@end

#import "OFCountedSet.h"

OF_ASSUME_NONNULL_BEGIN

@class OFMapTable;

@interface OFConcreteCountedSet: OFCountedSet
{
	OFMapTable *_mapTable;
}
@end

OF_ASSUME_NONNULL_END

 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#import "OFConcreteCountedSet.h"
#import "OFArray.h"
#import "OFConcreteMutableSet.h"
#import "OFMapTable.h"
#import "OFString.h"
#import "OFXMLAttribute.h"

#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFEnumerationMutationException.h"
#import "OFOutOfRangeException.h"

@implementation OFConcreteCountedSet
+ (void)initialize
{
	if (self == [OFConcreteCountedSet class])
		[self inheritMethodsFromClass: [OFConcreteMutableSet class]];
}

- (instancetype)initWithSet: (OFSet *)set
{
	self = [self init];

	@try {

/*
 * Copyright (c) 2008-2023 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#import "OFData.h"

OF_ASSUME_NONNULL_BEGIN

@interface OFConcreteData: OFData
{
	unsigned char *_Nullable _items;
	size_t _capacity, _count, _itemSize;
	bool _freeWhenDone;
}
@end

OF_ASSUME_NONNULL_END

/*
 * Copyright (c) 2008-2023 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#include <limits.h>
#include <string.h>

#import "OFConcreteData.h"

#import "OFInvalidArgumentException.h"
#import "OFOutOfRangeException.h"

@implementation OFConcreteData
- (instancetype)init
{
	return [self initWithItemSize: 1];
}

- (instancetype)initWithItemSize: (size_t)itemSize
{
	self = [super init];

	@try {
		if (itemSize == 0)
			@throw [OFInvalidArgumentException exception];

		_itemSize = itemSize;
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (instancetype)initWithItems: (const void *)items
			count: (size_t)count
		     itemSize: (size_t)itemSize
{
	self = [super init];

	@try {
		if (itemSize == 0)
			@throw [OFInvalidArgumentException exception];

		_items = OFAllocMemory(count, itemSize);
		_capacity = _count = count;
		_itemSize = itemSize;
		_freeWhenDone = true;

		memcpy(_items, items, count * itemSize);
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (instancetype)initWithItemsNoCopy: (void *)items
			      count: (size_t)count
			   itemSize: (size_t)itemSize
		       freeWhenDone: (bool)freeWhenDone
{
	self = [super init];

	@try {
		if (itemSize == 0)
			@throw [OFInvalidArgumentException exception];

		_items = (unsigned char *)items;
		_capacity = _count = count;
		_itemSize = itemSize;
		_freeWhenDone = freeWhenDone;
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (void)dealloc
{
	if (_freeWhenDone)
		OFFreeMemory(_items);

	[super dealloc];
}

- (size_t)count
{
	return _count;
}

- (size_t)itemSize
{
	return _itemSize;
}

- (const void *)items
{
	return _items;
}
@end

/*
 * Copyright (c) 2008-2023 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#import "OFDate.h"

OF_ASSUME_NONNULL_BEGIN

@interface OFConcreteDate: OFDate
{
	OFTimeInterval _seconds;
}
@end

OF_ASSUME_NONNULL_END

/*
 * Copyright (c) 2008-2023 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#import "OFConcreteDate.h"

@implementation OFConcreteDate
- (instancetype)initWithTimeIntervalSince1970: (OFTimeInterval)seconds
{
	self = [super initWithTimeIntervalSince1970: seconds];

	_seconds = seconds;

	return self;
}

- (OFTimeInterval)timeIntervalSince1970
{
	return _seconds;
}
@end

#import "OFDictionary.h"

OF_ASSUME_NONNULL_BEGIN

@class OFMapTable;
@class OFMapTableEnumerator;

@interface OFConcreteDictionary: OFDictionary
{
	OFMapTable *_mapTable;
}

- (instancetype)initWithCapacity: (size_t)capacity;
@end

OF_ASSUME_NONNULL_END

 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#import "OFConcreteDictionary.h"
#import "OFArray.h"
#import "OFConcreteMutableDictionary.h"
#import "OFMapTable+Private.h"
#import "OFMapTable.h"

#import "OFString.h"

#import "OFEnumerationMutationException.h"
#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"

static void *

static const OFMapTableFunctions objectFunctions = {
	.retain = retain,
	.release = release,
	.hash = hash,
	.equal = equal
};

@implementation OFConcreteDictionary
- (instancetype)init
{
	return [self initWithCapacity: 0];
}

- (instancetype)initWithCapacity: (size_t)capacity
{

- (instancetype)initWithDictionary: (OFDictionary *)dictionary
{
	size_t count;

	if (dictionary == nil)
		return [self init];

	if ([dictionary isKindOfClass: [OFConcreteDictionary class]] ||
	    [dictionary isKindOfClass: [OFConcreteMutableDictionary class]]) {
		self = [super init];

		@try {
			OFConcreteDictionary *dictionary_ =
			    (OFConcreteDictionary *)dictionary;

			_mapTable = [dictionary_->_mapTable copy];
		} @catch (id e) {
			[self release];
			@throw e;
		}

- (size_t)count
{
	return _mapTable.count;
}

- (bool)isEqual: (id)object
{
	OFConcreteDictionary *dictionary;

	if (object == self)
		return true;

	if (![object isKindOfClass: [OFConcreteDictionary class]] &&
	    ![object isKindOfClass: [OFConcreteMutableDictionary class]])
		return [super isEqual: object];

	dictionary = (OFConcreteDictionary *)object;

	return [dictionary->_mapTable isEqual: _mapTable];
}

- (bool)containsObject: (id)object
{
	return [_mapTable containsObject: object];

#import "OFArray.h"

OF_ASSUME_NONNULL_BEGIN

@class OFMutableData;

@interface OFConcreteMutableArray: OFMutableArray
{
	OFMutableData *_array;
	unsigned long _mutations;
}
@end

OF_ASSUME_NONNULL_END

 * file.
 */

#include "config.h"

#include <string.h>

#import "OFConcreteMutableArray.h"
#import "OFConcreteArray.h"
#import "OFArray+Private.h"
#import "OFData.h"

#import "OFEnumerationMutationException.h"
#import "OFInvalidArgumentException.h"
#import "OFOutOfRangeException.h"

@implementation OFConcreteMutableArray
+ (void)initialize
{
	if (self == [OFConcreteMutableArray class])
		[self inheritMethodsFromClass: [OFConcreteArray class]];
}

- (instancetype)initWithCapacity: (size_t)capacity
{
	self = [super init];

	@try {

		}
	}
}
#endif

- (void)makeImmutable
{
	object_setClass(self, [OFConcreteArray class]);
}
@end

/*
 * Copyright (c) 2008-2023 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#import "OFMutableData.h"

OF_ASSUME_NONNULL_BEGIN

@interface OFConcreteMutableData: OFMutableData
{
	unsigned char *_Nullable _items;
	size_t _capacity, _count, _itemSize;
	bool _freeWhenDone;
}
@end

OF_ASSUME_NONNULL_END

/*
 * Copyright (c) 2008-2023 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#include <limits.h>
#include <string.h>

#import "OFConcreteMutableData.h"
#import "OFConcreteData.h"

#import "OFInvalidArgumentException.h"
#import "OFOutOfMemoryException.h"
#import "OFOutOfRangeException.h"

@implementation OFConcreteMutableData
+ (void)initialize
{
	if (self == [OFConcreteMutableData class])
		[self inheritMethodsFromClass: [OFConcreteData class]];
}

- (instancetype)initWithItemSize: (size_t)itemSize capacity: (size_t)capacity
{
	self = [super init];

	@try {
		if (itemSize == 0)
			@throw [OFInvalidArgumentException exception];

		_items = OFAllocMemory(capacity, itemSize);
		_itemSize = itemSize;
		_capacity = capacity;
		_freeWhenDone = true;
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (instancetype)initWithItemsNoCopy: (void *)items
			      count: (size_t)count
			   itemSize: (size_t)itemSize
		       freeWhenDone: (bool)freeWhenDone
{
	self = [self initWithItems: items count: count itemSize: itemSize];

	if (freeWhenDone)
		OFFreeMemory(items);

	return self;
}

- (void *)mutableItems
{
	return _items;
}

- (void)addItem: (const void *)item
{
	if (SIZE_MAX - _count < 1)
		@throw [OFOutOfRangeException exception];

	if (_count + 1 > _capacity) {
		_items = OFResizeMemory(_items, _count + 1, _itemSize);
		_capacity = _count + 1;
	}

	memcpy(_items + _count * _itemSize, item, _itemSize);

	_count++;
}

- (void)addItems: (const void *)items count: (size_t)count
{
	if (count > SIZE_MAX - _count)
		@throw [OFOutOfRangeException exception];

	if (_count + count > _capacity) {
		_items = OFResizeMemory(_items, _count + count, _itemSize);
		_capacity = _count + count;
	}

	memcpy(_items + _count * _itemSize, items, count * _itemSize);
	_count += count;
}

- (void)insertItems: (const void *)items
	    atIndex: (size_t)idx
	      count: (size_t)count
{
	if (count > SIZE_MAX - _count || idx > _count)
		@throw [OFOutOfRangeException exception];

	if (_count + count > _capacity) {
		_items = OFResizeMemory(_items, _count + count, _itemSize);
		_capacity = _count + count;
	}

	memmove(_items + (idx + count) * _itemSize, _items + idx * _itemSize,
	    (_count - idx) * _itemSize);
	memcpy(_items + idx * _itemSize, items, count * _itemSize);

	_count += count;
}

- (void)increaseCountBy: (size_t)count
{
	if (count > SIZE_MAX - _count)
		@throw [OFOutOfRangeException exception];

	if (_count + count > _capacity) {
		_items = OFResizeMemory(_items, _count + count, _itemSize);
		_capacity = _count + count;
	}

	memset(_items + _count * _itemSize, '\0', count * _itemSize);
	_count += count;
}

- (void)removeItemsInRange: (OFRange)range
{
	if (range.length > SIZE_MAX - range.location ||
	    range.location + range.length > _count)
		@throw [OFOutOfRangeException exception];

	memmove(_items + range.location * _itemSize,
	    _items + (range.location + range.length) * _itemSize,
	    (_count - range.location - range.length) * _itemSize);

	_count -= range.length;
	@try {
		_items = OFResizeMemory(_items, _count, _itemSize);
		_capacity = _count;
	} @catch (OFOutOfMemoryException *e) {
		/* We don't really care, as we only made it smaller */
	}
}

- (void)removeLastItem
{
	if (_count == 0)
		return;

	_count--;
	@try {
		_items = OFResizeMemory(_items, _count, _itemSize);
		_capacity = _count;
	} @catch (OFOutOfMemoryException *e) {
		/* We don't care, as we only made it smaller */
	}
}

- (void)removeAllItems
{
	OFFreeMemory(_items);
	_items = NULL;
	_count = 0;
	_capacity = 0;
}

- (void)makeImmutable
{
	if (_capacity != _count) {
		@try {
			_items = OFResizeMemory(_items, _count, _itemSize);
			_capacity = _count;
		} @catch (OFOutOfMemoryException *e) {
			/* We don't care, as we only made it smaller */
		}
	}

	object_setClass(self, [OFConcreteData class]);
}
@end

#import "OFDictionary.h"

OF_ASSUME_NONNULL_BEGIN

@class OFMapTable;

@interface OFConcreteMutableDictionary: OFMutableDictionary
{
	OFMapTable *_mapTable;
}
@end

OF_ASSUME_NONNULL_END

 * file.
 */

#include "config.h"

#include <string.h>

#import "OFConcreteMutableDictionary.h"
#import "OFConcreteDictionary.h"
#import "OFMapTable.h"

#import "OFEnumerationMutationException.h"
#import "OFOutOfRangeException.h"

@implementation OFConcreteMutableDictionary
+ (void)initialize
{
	if (self == [OFConcreteMutableDictionary class])
		[self inheritMethodsFromClass: [OFConcreteDictionary class]];
}

- (void)setObject: (id)object forKey: (id)key
{
	[_mapTable setObject: object forKey: key];
}

		    exceptionWithObject: self];
	}
}
#endif

- (void)makeImmutable
{
	object_setClass(self, [OFConcreteDictionary class]);
}
@end

#import "OFMutableSet.h"

OF_ASSUME_NONNULL_BEGIN

@class OFMapTable;

@interface OFConcreteMutableSet: OFMutableSet
{
	OFMapTable *_mapTable;
}
@end

OF_ASSUME_NONNULL_END

 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#import "OFConcreteMutableSet.h"
#import "OFConcreteSet.h"
#import "OFMapTable.h"

@implementation OFConcreteMutableSet
+ (void)initialize
{
	if (self == [OFConcreteMutableSet class])
		[self inheritMethodsFromClass: [OFConcreteSet class]];
}

- (void)addObject: (id)object
{
	[_mapTable setObject: (void *)1 forKey: object];
}

- (void)removeObject: (id)object
{
	[_mapTable removeObjectForKey: object];
}

- (void)removeAllObjects
{
	[_mapTable removeAllObjects];
}

- (void)makeImmutable
{
	object_setClass(self, [OFConcreteSet class]);
}
@end

/*
 * Copyright (c) 2008-2023 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#import "OFNumber.h"

OF_ASSUME_NONNULL_BEGIN

@interface OFConcreteNumber: OFNumber
{
	union {
		double float_;
		long long signed_;
		unsigned long long unsigned_;
	} _value;
	char _typeEncoding;
}
@end

OF_ASSUME_NONNULL_END

/*
 * Copyright (c) 2008-2023 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#include <string.h>

#import "OFConcreteNumber.h"

#import "OFInvalidFormatException.h"

static bool
isUnsigned(OFNumber *number)
{
	switch (*number.objCType) {
	case 'B':
	case 'C':
	case 'S':
	case 'I':
	case 'L':
	case 'Q':
		return true;
	default:
		return false;
	}
}

static bool
isSigned(OFNumber *number)
{
	switch (*number.objCType) {
	case 'c':
	case 's':
	case 'i':
	case 'l':
	case 'q':
		return true;
	default:
		return false;
	}
}

static bool
isFloat(OFNumber *number)
{
	switch (*number.objCType) {
	case 'f':
	case 'd':
		return true;
	default:
		return false;
	}
}

@implementation OFConcreteNumber
- (instancetype)initWithBytes: (const void *)bytes
		     objCType: (const char *)objCType
{
#define CASE(type, method)				\
	if (strcmp(objCType, @encode(type)) == 0) {	\
		type value;				\
		memcpy(&value, bytes, sizeof(type));	\
		return [self method value];		\
	}

	CASE(bool, initWithBool:)
	CASE(signed char, initWithChar:)
	CASE(short, initWithShort:)
	CASE(int, initWithInt:)
	CASE(long, initWithLong:)
	CASE(long long, initWithLongLong:)
	CASE(unsigned char, initWithUnsignedChar:)
	CASE(unsigned short, initWithUnsignedShort:)
	CASE(unsigned int, initWithUnsignedInt:)
	CASE(unsigned long, initWithUnsignedLong:)
	CASE(unsigned long long, initWithUnsignedLongLong:)
	CASE(float, initWithFloat:)
	CASE(double, initWithDouble:)

	[self release];
	@throw [OFInvalidFormatException exception];
}

- (instancetype)initWithBool: (bool)value
{
	self = [super initWithBytes: &value objCType: @encode(bool)];

	_value.unsigned_ = value;
	_typeEncoding = *@encode(bool);

	return self;
}

- (instancetype)initWithChar: (signed char)value
{
	self = [super initWithBytes: &value objCType: @encode(signed char)];

	_value.signed_ = value;
	_typeEncoding = *@encode(signed char);

	return self;
}

- (instancetype)initWithShort: (short)value
{
	self = [super initWithBytes: &value objCType: @encode(short)];

	_value.signed_ = value;
	_typeEncoding = *@encode(short);

	return self;
}

- (instancetype)initWithInt: (int)value
{
	self = [super initWithBytes: &value objCType: @encode(int)];

	_value.signed_ = value;
	_typeEncoding = *@encode(int);

	return self;
}

- (instancetype)initWithLong: (long)value
{
	self = [super initWithBytes: &value objCType: @encode(long)];

	_value.signed_ = value;
	_typeEncoding = *@encode(long);

	return self;
}

- (instancetype)initWithLongLong: (long long)value
{
	self = [super initWithBytes: &value objCType: @encode(long long)];

	_value.signed_ = value;
	_typeEncoding = *@encode(long long);

	return self;
}

- (instancetype)initWithUnsignedChar: (unsigned char)value
{
	self = [super initWithBytes: &value objCType: @encode(unsigned char)];

	_value.unsigned_ = value;
	_typeEncoding = *@encode(unsigned long);

	return self;
}

- (instancetype)initWithUnsignedShort: (unsigned short)value
{
	self = [super initWithBytes: &value objCType: @encode(unsigned short)];

	_value.unsigned_ = value;
	_typeEncoding = *@encode(unsigned short);

	return self;
}

- (instancetype)initWithUnsignedInt: (unsigned int)value
{
	self = [super initWithBytes: &value objCType: @encode(unsigned int)];

	_value.unsigned_ = value;
	_typeEncoding = *@encode(unsigned int);

	return self;
}

- (instancetype)initWithUnsignedLong: (unsigned long)value
{
	self = [super initWithBytes: &value objCType: @encode(unsigned long)];

	_value.unsigned_ = value;
	_typeEncoding = *@encode(unsigned long);

	return self;
}

- (instancetype)initWithUnsignedLongLong: (unsigned long long)value
{
	self = [super initWithBytes: &value
			   objCType: @encode(unsigned long long)];

	_value.unsigned_ = value;
	_typeEncoding = *@encode(unsigned long long);

	return self;
}

- (instancetype)initWithFloat: (float)value
{
	self = [super initWithBytes: &value objCType: @encode(float)];

	_value.float_ = value;
	_typeEncoding = *@encode(float);

	return self;
}

- (instancetype)initWithDouble: (double)value
{
	self = [super initWithBytes: &value objCType: @encode(double)];

	_value.float_ = value;
	_typeEncoding = *@encode(double);

	return self;
}

- (const char *)objCType
{
	return &_typeEncoding;
}

- (long long)longLongValue
{
	if (isFloat(self))
		return _value.float_;
	else if (isSigned(self))
		return _value.signed_;
	else if (isUnsigned(self))
		return _value.unsigned_;
	else
		@throw [OFInvalidFormatException exception];
}

- (unsigned long long)unsignedLongLongValue
{
	if (isFloat(self))
		return _value.float_;
	else if (isSigned(self))
		return _value.signed_;
	else if (isUnsigned(self))
		return _value.unsigned_;
	else
		@throw [OFInvalidFormatException exception];
}

- (double)doubleValue
{
	if (isFloat(self))
		return _value.float_;
	else if (isSigned(self))
		return _value.signed_;
	else if (isUnsigned(self))
		return _value.unsigned_;
	else
		@throw [OFInvalidFormatException exception];
}
@end

#import "OFSet.h"

OF_ASSUME_NONNULL_BEGIN

@class OFMapTable;

@interface OFConcreteSet: OFSet
{
	OFMapTable *_mapTable;
}

- (instancetype)initWithCapacity: (size_t)capacity;
@end

OF_ASSUME_NONNULL_END

 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#import "OFConcreteSet.h"
#import "OFArray.h"
#import "OFConcreteCountedSet.h"
#import "OFConcreteMutableSet.h"
#import "OFMapTable+Private.h"
#import "OFMapTable.h"
#import "OFString.h"

#import "OFInvalidArgumentException.h"
#import "OFEnumerationMutationException.h"

static void *
retain(void *object)

	.retain = retain,
	.release = release,
	.hash = hash,
	.equal = equal
};
static const OFMapTableFunctions objectFunctions = { NULL };

@implementation OFConcreteSet
- (instancetype)init
{
	return [self initWithCapacity: 0];
}

- (instancetype)initWithCapacity: (size_t)capacity
{

		return false;

	return ([_mapTable objectForKey: object] != nil);
}

- (bool)isEqual: (id)object
{
	OFConcreteSet *set;

	if (object == self)
		return true;

	if (![object isKindOfClass: [OFConcreteSet class]] &&
	    ![object isKindOfClass: [OFConcreteMutableSet class]] &&
	    ![object isKindOfClass: [OFConcreteCountedSet class]])
		return [super isEqual: object];

	set = object;

	return [set->_mapTable isEqual: _mapTable];
}

 * file.
 */

#import "OFSubarray.h"

OF_ASSUME_NONNULL_BEGIN

@interface OFConcreteSubarray: OFSubarray
@end

OF_ASSUME_NONNULL_END

 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#import "OFConcreteSubarray.h"
#import "OFConcreteArray.h"
#import "OFConcreteMutableArray.h"

@implementation OFConcreteSubarray
- (const id *)objects
{
	return _array.objects + _range.location;
}

- (bool)isEqual: (id)object
{
	OFArray *otherArray;
	id const *objects, *otherObjects;

	if (object == self)
		return true;

	if (![object isKindOfClass: [OFConcreteArray class]] &&
	    ![object isKindOfClass: [OFConcreteMutableArray class]])
		return [super isEqual: object];

	otherArray = object;

	if (_range.length != otherArray.count)
		return false;

 * file.
 */

#import "OFValue.h"

OF_ASSUME_NONNULL_BEGIN

@interface OFConcreteValue: OFValue
{
	size_t _size;
	void *_bytes;
	char *_objCType;
}
@end

OF_ASSUME_NONNULL_END

 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#import "OFConcreteValue.h"
#import "OFMethodSignature.h"
#import "OFString.h"

#import "OFOutOfRangeException.h"

@implementation OFConcreteValue


- (instancetype)initWithBytes: (const void *)bytes
		     objCType: (const char *)objCType
{
	self = [super initWithBytes: bytes objCType: objCType];

	@try {
		_size = OFSizeOfTypeEncoding(objCType);
		_objCType = OFStrDup(objCType);
		_bytes = OFAllocMemory(1, _size);

		memcpy(_bytes, bytes, _size);
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (void)dealloc
{
	OFFreeMemory(_bytes);
	OFFreeMemory(_objCType);

	[super dealloc];
}

- (const char *)objCType
{
	return _objCType;
}

- (void)getValue: (void *)value size: (size_t)size
{
	if (size != _size)
		@throw [OFOutOfRangeException exception];

	memcpy(value, _bytes, _size);
}
@end

 * @note Waiting might have been interrupted by a signal. It is thus recommended
 *	 to check the condition again after @ref wait returned!
 *
 * @throw OFWaitForConditionFailedException Waiting for the condition failed
 */
- (void)wait;

#if defined(OF_AMIGAOS) || defined(DOXYGEN)
/**
 * @brief Blocks the current thread until another thread calls @ref signal,
 *	  @ref broadcast or an Exec Signal is received.
 *
 * @note This is only available on AmigaOS!
 *
 * @param signalMask A pointer to a signal mask of Exec Signals to receive.

 *
 * @param timeInterval The time interval until the timeout is reached
 * @return Whether the condition has been signaled
 * @throw OFWaitForConditionFailedException Waiting for the condition failed
 */
- (bool)waitForTimeInterval: (OFTimeInterval)timeInterval;

#if defined(OF_AMIGAOS) || defined(DOXYGEN)
/**
 * @brief Blocks the current thread until another thread calls @ref signal,
 *	  @ref broadcast, the timeout is reached or an Exec Signal is received.
 *
 * @note This is only available on AmigaOS!
 *
 * @param timeInterval The time interval until the timeout is reached

 *
 * @param date The date at which the timeout is reached
 * @return Whether the condition has been signaled
 * @throw OFWaitForConditionFailedException Waiting for the condition failed
 */
- (bool)waitUntilDate: (OFDate *)date;

#if defined(OF_AMIGAOS) || defined(DOXYGEN)
/**
 * @brief Blocks the current thread until another thread calls @ref signal,
 *	  @ref broadcast, the timeout is reached or an Exec Signal is received.
 *
 * @note This is only available on AmigaOS!
 *
 * @param date The date at which the timeout is reached

 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */




#import "OFString.h"

OF_ASSUME_NONNULL_BEGIN

#if !defined(OF_CONSTANT_STRING_M) && \
    defined(OF_APPLE_RUNTIME) && !defined(__OBJC2__)
# ifdef __cplusplus
extern "C" {
# endif
extern void *_OFConstantStringClassReference;
# ifdef __cplusplus
}
# endif
#endif


/**
 * @class OFConstantString OFConstantString.h ObjFW/OFConstantString.h
 *
 * @brief A class for storing constant strings using the `@""` literal.
 */
OF_SUBCLASSING_RESTRICTED
@interface OFConstantString: OFString
{
	char *_cString;
	unsigned int _cStringLength;
}
@end


OF_ASSUME_NONNULL_END

@implementation OFConstantUTF8String
+ (instancetype)alloc
{
	OF_UNRECOGNIZED_SELECTOR
}





OF_SINGLETON_METHODS


















@end

@implementation OFConstantString
+ (void)load
{
#if defined(OF_APPLE_RUNTIME) && !defined(__OBJC2__)
	/*

}

+ (instancetype)alloc
{
	OF_UNRECOGNIZED_SELECTOR
}





OF_SINGLETON_METHODS



















/*
 * In all following methods, the constant string is converted to an
 * OFConstantUTF8String and the message sent again.
 */

/* From protocol OFCopying */

- (OFData *)dataWithEncoding: (OFStringEncoding)encoding
{
	[self finishInitialization];
	return [self dataWithEncoding: encoding];
}















#ifdef OF_WINDOWS
- (OFString *)stringByExpandingWindowsEnvironmentStrings
{
	[self finishInitialization];
	return self.stringByExpandingWindowsEnvironmentStrings;
}
#endif

 */

#include "config.h"

#include <stdlib.h>

#import "OFCountedSet.h"
#import "OFConcreteCountedSet.h"
#import "OFNumber.h"
#import "OFString.h"

static struct {
	Class isa;
} placeholder;

@interface OFPlaceholderCountedSet: OFCountedSet
@end

@implementation OFPlaceholderCountedSet
#ifdef __clang__
/* We intentionally don't call into super, so silence the warning. */
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wunknown-pragmas"
# pragma clang diagnostic ignored "-Wobjc-designated-initializers"
#endif
- (instancetype)init
{
	return (id)[[OFConcreteCountedSet alloc] init];
}

- (instancetype)initWithSet: (OFSet *)set
{
	return (id)[[OFConcreteCountedSet alloc] initWithSet: set];
}

- (instancetype)initWithArray: (OFArray *)array
{
	return (id)[[OFConcreteCountedSet alloc] initWithArray: array];
}

- (instancetype)initWithObjects: (id)firstObject, ...
{
	id ret;
	va_list arguments;

	va_start(arguments, firstObject);
	ret = [[OFConcreteCountedSet alloc] initWithObject: firstObject
						 arguments: arguments];
	va_end(arguments);

	return ret;
}

- (instancetype)initWithObjects: (id const *)objects count: (size_t)count
{
	return (id)[[OFConcreteCountedSet alloc] initWithObjects: objects
							   count: count];
}

- (instancetype)initWithObject: (id)firstObject arguments: (va_list)arguments
{
	return (id)[[OFConcreteCountedSet alloc] initWithObject: firstObject
						      arguments: arguments];
}
#ifdef __clang__




# pragma clang diagnostic pop




#endif



OF_SINGLETON_METHODS




@end

@implementation OFCountedSet
+ (void)initialize
{
	if (self == [OFCountedSet class])
		object_setClass((id)&placeholder,
		    [OFPlaceholderCountedSet class]);
}

+ (instancetype)alloc
{
	if (self == [OFCountedSet class])
		return (id)&placeholder;

	return [super alloc];
}

















- (size_t)countForObject: (id)object
{
	OF_UNRECOGNIZED_SELECTOR
}

- (OFString *)description
{

#include "unistd_wrapper.h"

#import "OFDNSResolverSettings.h"
#import "OFArray.h"
#import "OFCharacterSet.h"
#import "OFDate.h"
#import "OFDictionary.h"
#ifdef OF_HAVE_FILES
# import "OFFile.h"
# import "OFFileManager.h"
#endif
#import "OFLocale.h"
#import "OFSocket+Private.h"
#import "OFString.h"
#ifdef OF_WINDOWS
# import "OFWindowsRegistryKey.h"
#endif

#ifdef OF_NINTENDO_3DS
/* Newer versions of libctru started using id as a parameter name. */
# define id id_3ds
# include <3ds.h>
# undef id
#endif

#if defined(OF_AMIGAOS_M68K) || defined(OF_AMIGAOS4)
# define Class IntuitionClass
# include <proto/dos.h>
# undef Class
#endif
#ifdef OF_MORPHOS
# include <proto/rexxsyslib.h>
# include <rexx/errors.h>
# include <rexx/storage.h>
#endif

#if defined(OF_HAIKU)
# define HOSTS_PATH @"/system/settings/network/hosts"
# define RESOLV_CONF_PATH @"/system/settings/network/resolv.conf"





#else
# define HOSTS_PATH @"/etc/hosts"
# define RESOLV_CONF_PATH @"/etc/resolv.conf"
#endif

#ifndef HOST_NAME_MAX
# define HOST_NAME_MAX 255

	if (gethostname(hostname, HOST_NAME_MAX + 1) != 0)
		return nil;

	return [OFString stringWithCString: hostname
				  encoding: [OFLocale encoding]];
}
#endif

#ifdef OF_AMIGAOS_M68K
static bool
assignExists(const char *assign)
{
	struct DosList *list = LockDosList(LDF_ASSIGNS | LDF_READ);
	bool found = (FindDosEntry(list, assign, LDF_ASSIGNS) != NULL);
	UnLockDosList(LDF_ASSIGNS | LDF_READ);
	return found;
}
#endif

#ifdef OF_MORPHOS
static OFString *
arexxCommand(const char *port, const char *command)
{
	struct Library *RexxSysBase;
	struct MsgPort *replyPort = NULL;

#if defined(OF_HAVE_FILES) && !defined(OF_MORPHOS) && !defined(OF_NINTENDO_3DS)
- (void)parseHosts: (OFString *)path
{
	void *pool = objc_autoreleasePoolPush();
	OFCharacterSet *whitespaceCharacterSet =
	    [OFCharacterSet whitespaceCharacterSet];
	OFCharacterSet *commentCharacters =
	    [OFCharacterSet characterSetWithCharactersInString: @"#;"];
	OFMutableDictionary *staticHosts;
	OFFile *file;
	OFString *line;

	@try {
		file = [OFFile fileWithPath: path mode: @"r"];
	} @catch (OFOpenItemFailedException *e) {
		objc_autoreleasePoolPop(pool);
		return;
	}

	staticHosts = [OFMutableDictionary dictionary];

	while ((line =
	    [file readLineWithEncoding: [OFLocale encoding]]) != nil) {
		OFArray *components, *hosts;
		size_t pos;
		OFString *address;

		pos = [line indexOfCharacterFromSet: commentCharacters];
		if (pos != OFNotFound)
			line = [line substringToIndex: pos];

		components = [line
		    componentsSeparatedByCharactersInSet: whitespaceCharacterSet
		    options: OFStringSkipEmptyComponents];

	[staticHosts makeImmutable];
	_staticHosts = [staticHosts copy];

	objc_autoreleasePoolPop(pool);
}

# ifndef OF_WINDOWS
- (void)parseResolvConfOption: (OFString *)option
{
	@try {
		if ([option hasPrefix: @"ndots:"]) {
			unsigned long long number;

			option = [option substringFromIndex: 6];

		    options: OFStringSkipEmptyComponents];

		if (components.count < 2) {
			objc_autoreleasePoolPop(pool2);
			continue;
		}

		option = [components.firstObject lowercaseString];
		arguments = [components objectsInRange:
		    OFMakeRange(1, components.count - 1)];

		if ([option isEqual: @"nameserver"]) {
			if (arguments.count != 1) {
				objc_autoreleasePoolPop(pool2);
				continue;

	[staticHosts makeImmutable];
	_staticHosts = [staticHosts copy];

	objc_autoreleasePoolPop(pool);
}
#endif

#if defined(OF_AMIGAOS_M68K) || defined(OF_AMIGAOS4)
- (bool)obtainRoadshowSystemConfig
{
	OFMutableArray *nameServers;
	OFStringEncoding encoding;
	struct List *nameServerList;
	char buffer[MAXHOSTNAMELEN];
	LONG hasDNSAPI;

	if (SocketBaseTags(SBTM_GETREF(SBTC_HAVE_DNS_API), (ULONG)&hasDNSAPI,
	    TAG_END) != 0 || !hasDNSAPI)
		return false;

	nameServers = [OFMutableArray array];
	encoding = [OFLocale encoding];
	nameServerList = ObtainDomainNameServerList();

	if (nameServerList == NULL)
		@throw [OFOutOfMemoryException exception];

	@try {
		struct DomainNameServerNode *iter =
		    (struct DomainNameServerNode *)&nameServerList->lh_Head;

		[nameServers makeImmutable];
		_nameServers = [nameServers copy];
	}

	if (GetDefaultDomainName(buffer, sizeof(buffer)))
		_localDomain = [[OFString alloc] initWithCString: buffer
							encoding: encoding];

	return true;
}
#endif

#ifdef OF_NINTENDO_3DS
- (void)obtainNintendo3DSSytemConfig
{
	OFMutableArray *nameServers = [OFMutableArray array];

#endif

- (void)reload
{
#ifdef OF_WINDOWS
	OFString *path = nil;
#endif
#if (defined(OF_AMIGAOS_M68K) || defined(OF_AMIGAOS4)) && defined(OF_HAVE_FILES)
	OFFileManager *fileManager = [OFFileManager defaultManager];
#endif
	void *pool;

	/*
	 * TODO: Rather than reparsing every time, check what actually changed
	 *	 (mtime) and only reset those.
	 */

	if (path != nil)
		[self parseHosts: path];
# endif

	[self obtainWindowsSystemConfig];
#elif defined(OF_MORPHOS)
	[self obtainMorphOSSystemConfig];
#elif defined(OF_AMIGAOS_M68K) || defined(OF_AMIGAOS4)
# ifdef OF_HAVE_FILES
	if (![self obtainRoadshowSystemConfig]) {
		if (assignExists("AmiTCP"))
			/*
			 * FIXME: The installer puts it there, but theoretically
			 *	  it could also be in AmiTCP:db/netdb or any of
			 *	  the files included there.
			 */
			[self parseResolvConf: @"AmiTCP:db/netdb-myhost"];
	}

	if ([fileManager fileExistsAtPath: @"DEVS:Internet/hosts"])
		[self parseHosts: @"DEVS:Internet/hosts"];
	else if (assignExists("AmiTCP"))
		[self parseHosts: @"AmiTCP:db/hosts"];
# else
	[self obtainRoadshowSystemConfig];
# endif
#elif defined(OF_NINTENDO_3DS)
	[self obtainNintendo3DSSytemConfig];
#elif defined(OF_HAVE_FILES)
	[self parseHosts: HOSTS_PATH];
	[self parseResolvConf: RESOLV_CONF_PATH];
#endif

	void *pool = objc_autoreleasePoolPush();
	id <OFCryptographicHash> hash =
	    [class hashWithAllowsSwappableMemory: true];
	size_t digestSize = [class digestSize];
	const unsigned char *digest;
	char cString[digestSize * 2];

	[hash updateWithBuffer: self.items
			length: self.count * self.itemSize];
	[hash calculate];
	digest = hash.digest;

	for (size_t i = 0; i < digestSize; i++) {
		uint8_t high, low;

		high = digest[i] >> 4;

/**
 * @class OFData OFData.h ObjFW/OFData.h
 *
 * @brief A class for storing arbitrary data in an array.
 */
@interface OFData: OFObject <OFCopying, OFMutableCopying, OFComparing,
    OFMessagePackRepresentation>









/**
 * @brief The size of a single item in the OFData in bytes.
 */
@property (readonly, nonatomic) size_t itemSize;

/**
 * @brief The number of items in the OFData.

@property (readonly, nonatomic) OFString *stringRepresentation;

/**
 * @brief A string containing the data in Base64 encoding.
 */
@property (readonly, nonatomic) OFString *stringByBase64Encoding;

/**
 * @brief Creates a new OFData that is empty with an item size of 1.
 *
 * @return A new autoreleased OFData
 */
+ (instancetype)data;

/**
 * @brief Creates a new OFData that is empty with the specified item size.
 *
 * @param itemSize The size of a single element in the OFData
 * @return A new autoreleased OFData
 */
+ (instancetype)dataWithItemSize: (size_t)itemSize;

/**
 * @brief Creates a new OFData with the specified `count` items of size 1.
 *
 * @param items The items to store in the OFData
 * @param count The number of items
 * @return A new autoreleased OFData
 */

 * @param string The string with the Base64-encoded data
 * @return A new autoreleased OFData
 * @throw OFInvalidFormatException The specified string is not correctly
 *				   formatted
 */
+ (instancetype)dataWithBase64EncodedString: (OFString *)string;

/**
 * @brief Initializes an already allocated OFData to be empty with an item size
 *	  of 1.
 *
 * @return An initialized OFData
 */
- (instancetype)init;

/**
 * @brief Initializes an already allocated OFData to be empty with the
 *	  specified item size.
 *
 * @param itemSize The size of a single element in the OFData
 * @return An initialized OFData
 */
- (instancetype)initWithItemSize: (size_t)itemSize;

/**
 * @brief Initializes an already allocated OFData with the specified `count`
 *	  items of size 1.
 *
 * @param items The items to store in the OFData
 * @param count The number of items
 * @return An initialized OFData

#include <stdlib.h>
#include <string.h>
#include <limits.h>

#import "OFData.h"
#import "OFBase64.h"
#import "OFConcreteData.h"
#import "OFDictionary.h"
#ifdef OF_HAVE_FILES
# import "OFFile.h"
# import "OFFileManager.h"
#endif
#import "OFIRI.h"
#import "OFIRIHandler.h"
#import "OFStream.h"
#import "OFString.h"
#import "OFSubdata.h"
#import "OFSystemInfo.h"

#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFNotImplementedException.h"
#import "OFOutOfMemoryException.h"
#import "OFOutOfRangeException.h"
#import "OFTruncatedDataException.h"
#import "OFUnsupportedProtocolException.h"

static struct {
	Class isa;
} placeholder;

@interface OFPlaceholderData: OFString
@end

/* References for static linking */
void
_references_to_categories_of_OFData(void)
{
	_OFData_CryptographicHashing_reference = 1;
	_OFData_MessagePackParsing_reference = 1;
}

@implementation OFPlaceholderData
- (instancetype)init
{
	return (id)[[OFConcreteData alloc] init];
}

- (instancetype)initWithItemSize: (size_t)itemSize
{
	return (id)[[OFConcreteData alloc] initWithItemSize: itemSize];
}

- (instancetype)initWithItems: (const void *)items count: (size_t)count
{
	return (id)[[OFConcreteData alloc] initWithItems: items count: count];
}

- (instancetype)initWithItems: (const void *)items
			count: (size_t)count
		     itemSize: (size_t)itemSize
{
	return (id)[[OFConcreteData alloc] initWithItems: items
						   count: count
						itemSize: itemSize];
}

- (instancetype)initWithItemsNoCopy: (void *)items
			      count: (size_t)count
		       freeWhenDone: (bool)freeWhenDone
{
	return (id)[[OFConcreteData alloc] initWithItemsNoCopy: items
							 count: count
						  freeWhenDone: freeWhenDone];
}

- (instancetype)initWithItemsNoCopy: (void *)items
			      count: (size_t)count
			   itemSize: (size_t)itemSize
		       freeWhenDone: (bool)freeWhenDone
{
	return (id)[[OFConcreteData alloc] initWithItemsNoCopy: items
							 count: count
						      itemSize: itemSize
						  freeWhenDone: freeWhenDone];
}

#ifdef OF_HAVE_FILES
- (instancetype)initWithContentsOfFile: (OFString *)path
{
	return (id)[[OFConcreteData alloc] initWithContentsOfFile: path];
}
#endif

- (instancetype)initWithContentsOfIRI: (OFIRI *)IRI
{
	return (id)[[OFConcreteData alloc] initWithContentsOfIRI: IRI];
}

- (instancetype)initWithStringRepresentation: (OFString *)string
{
	return (id)[[OFConcreteData alloc]
	    initWithStringRepresentation: string];
}

- (instancetype)initWithBase64EncodedString: (OFString *)string
{
	return (id)[[OFConcreteData alloc] initWithBase64EncodedString: string];
}

OF_SINGLETON_METHODS
@end

@implementation OFData
+ (void)initialize
{
	if (self == [OFData class])
		object_setClass((id)&placeholder, [OFPlaceholderData class]);
}

+ (instancetype)alloc
{
	if (self == [OFData class])
		return (id)&placeholder;

	return [super alloc];
}

+ (instancetype)data
{
	return [[[self alloc] init] autorelease];
}

+ (instancetype)dataWithItemSize: (size_t)itemSize
{
	return [[[self alloc] initWithItemSize: itemSize] autorelease];
}

+ (instancetype)dataWithItems: (const void *)items count: (size_t)count
{
	return [[[self alloc] initWithItems: items count: count] autorelease];
}

+ (instancetype)dataWithItems: (const void *)items

	    initWithStringRepresentation: string] autorelease];
}

+ (instancetype)dataWithBase64EncodedString: (OFString *)string
{
	return [[[self alloc] initWithBase64EncodedString: string] autorelease];
}

- (instancetype)init
{
	if ([self isMemberOfClass: [OFData class]] ||
	    [self isMemberOfClass: [OFMutableData class]]) {
		@try {
			[self doesNotRecognizeSelector: _cmd];
		} @catch (id e) {
			[self release];
			@throw e;
		}

		abort();
	}

	return [super init];
}

- (instancetype)initWithItemSize: (size_t)itemSize
{
	OF_INVALID_INIT_METHOD
}

- (instancetype)initWithItems: (const void *)items count: (size_t)count
{
	return [self initWithItems: items count: count itemSize: 1];
}

- (instancetype)initWithItems: (const void *)items
			count: (size_t)count
		     itemSize: (size_t)itemSize
{

	OF_INVALID_INIT_METHOD
















}

- (instancetype)initWithItemsNoCopy: (void *)items
			      count: (size_t)count
		       freeWhenDone: (bool)freeWhenDone
{
	return [self initWithItemsNoCopy: items
				   count: count
				itemSize: 1
			    freeWhenDone: freeWhenDone];
}

- (instancetype)initWithItemsNoCopy: (void *)items
			      count: (size_t)count
			   itemSize: (size_t)itemSize
		       freeWhenDone: (bool)freeWhenDone
{

	OF_INVALID_INIT_METHOD



}












#ifdef OF_HAVE_FILES
- (instancetype)initWithContentsOfFile: (OFString *)path
{




	void *pool = objc_autoreleasePoolPush();


	OFIRI *IRI;




	@try {


		IRI = [OFIRI fileIRIWithPath: path];

	} @catch (id e) {

		[self release];

		@throw e;
	}


	self = [self initWithContentsOfIRI: IRI];






	objc_autoreleasePoolPop(pool);

	return self;
}
#endif

- (instancetype)initWithContentsOfIRI: (OFIRI *)IRI
{
	char *items = NULL, *buffer = NULL;
	size_t count = 0;

	@try {
		void *pool = objc_autoreleasePoolPush();
		OFStream *stream = [OFIRIHandler openItemAtIRI: IRI mode: @"r"];
		size_t pageSize;






		pageSize = [OFSystemInfo pageSize];
		buffer = OFAllocMemory(1, pageSize);


		while (!stream.atEndOfStream) {
			size_t length = [stream readIntoBuffer: buffer

							length: pageSize];

			if (SIZE_MAX - count < length)
				@throw [OFOutOfRangeException exception];


			items = OFResizeMemory(items, count + length, 1);

			memcpy(items + count, buffer, length);
			count += length;



		}

		objc_autoreleasePoolPop(pool);
	} @catch (id e) {
		OFFreeMemory(buffer);
		OFFreeMemory(items);
		[self release];

		@throw e;
	}

	@try {
		self = [self initWithItemsNoCopy: items
					   count: count
				    freeWhenDone: true];
	} @catch (id e) {
		OFFreeMemory(items);
		@throw e;
	}

	return self;
}

- (instancetype)initWithStringRepresentation: (OFString *)string
{
	char *items = NULL;
	size_t count = 0;

	@try {
		const char *cString;

		count = [string
		    cStringLengthWithEncoding: OFStringEncodingASCII];


		if (count % 2 != 0)
			@throw [OFInvalidFormatException exception];

		count /= 2;

		items = OFAllocMemory(count, 1);




		cString = [string cStringWithEncoding: OFStringEncodingASCII];

		for (size_t i = 0; i < count; i++) {
			uint8_t c1 = cString[2 * i];
			uint8_t c2 = cString[2 * i + 1];
			uint8_t byte;

			else if (c2 >= 'a' && c2 <= 'f')
				byte |= c2 - 'a' + 10;
			else if (c2 >= 'A' && c2 <= 'F')
				byte |= c2 - 'A' + 10;
			else
				@throw [OFInvalidFormatException exception];

			items[i] = byte;
		}
	} @catch (id e) {
		OFFreeMemory(items);
		[self release];

		@throw e;
	}

	@try {
		self = [self initWithItemsNoCopy: items
					   count: count
				    freeWhenDone: true];
	} @catch (id e) {
		OFFreeMemory(items);
		@throw e;
	}

	return self;
}

- (instancetype)initWithBase64EncodedString: (OFString *)string
{

	void *pool = objc_autoreleasePoolPush();


	OFMutableData *data;

	@try {
		data = [OFMutableData data];


		if (!OFBase64Decode(data,
		    [string cStringWithEncoding: OFStringEncodingASCII],
		    [string cStringLengthWithEncoding: OFStringEncodingASCII]))
			@throw [OFInvalidFormatException exception];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	/* Avoid copying if the class already matches. */
	if (data.class == self.class) {
		[self release];
		self = [data retain];
		objc_autoreleasePoolPop(pool);
		return self;
	}

	/*
	 * Make it immutable and avoid copying if the class already matches
	 * after that.
	 */
	@try {
		[data makeImmutable];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	if (data.class == self.class) {
		[self release];
		self = [data retain];
		objc_autoreleasePoolPop(pool);
		return self;
	}

	self = [self initWithItems: data.items count: data.count];

	objc_autoreleasePoolPop(pool);

	return self;

}

- (size_t)count
{

	OF_UNRECOGNIZED_SELECTOR
}

- (size_t)itemSize
{

	OF_UNRECOGNIZED_SELECTOR
}

- (const void *)items
{
	OF_UNRECOGNIZED_SELECTOR
}

- (const void *)itemAtIndex: (size_t)idx
{
	if (idx >= self.count)
		@throw [OFOutOfRangeException exception];

	return (const unsigned char *)self.items + idx * self.itemSize;
}

- (const void *)firstItem
{
	const void *items = self.items;

	if (items == NULL || self.count == 0)
		return NULL;

	return items;
}

- (const void *)lastItem
{
	const unsigned char *items = self.items;
	size_t count = self.count;

	if (items == NULL || count == 0)
		return NULL;

	return items + (count - 1) * self.itemSize;
}

- (id)copy
{
	return [self retain];
}

- (id)mutableCopy
{
	return [[OFMutableData alloc] initWithItems: self.items
					      count: self.count
					   itemSize: self.itemSize];
}

- (bool)isEqual: (id)object
{
	size_t count, itemSize;
	OFData *data;

	if (object == self)
		return true;

	if (![object isKindOfClass: [OFData class]])
		return false;

	count = self.count;
	itemSize = self.itemSize;
	data = object;

	if (data.count != count || data.itemSize != itemSize)
		return false;
	if (memcmp(data.items, self.items, count * itemSize) != 0)
		return false;

	return true;
}

- (OFComparisonResult)compare: (OFData *)data
{
	int comparison;
	size_t count, dataCount, minCount;

	if (![data isKindOfClass: [OFData class]])
		@throw [OFInvalidArgumentException exception];

	if (data.itemSize != self.itemSize)
		@throw [OFInvalidArgumentException exception];

	count = self.count;
	dataCount = data.count;
	minCount = (count > dataCount ? dataCount : count);

	if ((comparison = memcmp(self.items, data.items,
	    minCount * self.itemSize)) == 0) {
		if (count > dataCount)
			return OFOrderedDescending;
		if (count < dataCount)
			return OFOrderedAscending;

		return OFOrderedSame;
	}

	if (comparison > 0)
		return OFOrderedDescending;
	else
		return OFOrderedAscending;
}

- (unsigned long)hash
{
	const unsigned char *items = self.items;
	size_t count = self.count, itemSize = self.itemSize;
	unsigned long hash;

	OFHashInit(&hash);

	for (size_t i = 0; i < count * itemSize; i++)
		OFHashAddByte(&hash, items[i]);

	OFHashFinalize(&hash);

	return hash;
}

- (OFData *)subdataWithRange: (OFRange)range
{


	if (range.length > SIZE_MAX - range.location ||
	    range.location + range.length > self.count)
		@throw [OFOutOfRangeException exception];


	if (![self isKindOfClass: [OFMutableData class]])
		return [[[OFSubdata alloc] initWithData: self
						  range: range] autorelease];




	return [OFData dataWithItems: (const unsigned char *)self.items +
				      (range.location * self.itemSize)
			       count: self.count
			    itemSize: self.itemSize];
}

- (OFString *)description
{
	OFMutableString *ret = [OFMutableString stringWithString: @"<"];
	const unsigned char *items = self.items;
	size_t count = self.count, itemSize = self.itemSize;

	for (size_t i = 0; i < count; i++) {
		if (i > 0)
			[ret appendString: @" "];

		for (size_t j = 0; j < itemSize; j++)
			[ret appendFormat: @"%02x", items[i * itemSize + j]];
	}

	[ret appendString: @">"];

	[ret makeImmutable];
	return ret;
}

- (OFString *)stringRepresentation
{
	OFMutableString *ret = [OFMutableString string];
	const unsigned char *items = self.items;
	size_t count = self.count, itemSize = self.itemSize;

	for (size_t i = 0; i < count; i++)
		for (size_t j = 0; j < itemSize; j++)
			[ret appendFormat: @"%02x", items[i * itemSize + j]];

	[ret makeImmutable];
	return ret;
}

- (OFString *)stringByBase64Encoding
{
	return OFBase64Encode(self.items, self.count * self.itemSize);
}

- (OFRange)rangeOfData: (OFData *)data
	       options: (OFDataSearchOptions)options
		 range: (OFRange)range
{
	const unsigned char *items = self.items;
	size_t count = self.count, itemSize = self.itemSize;
	const char *search;
	size_t searchLength;

	if (range.length > SIZE_MAX - range.location ||
	    range.location + range.length > count)
		@throw [OFOutOfRangeException exception];

	if (data == nil || data.itemSize != itemSize)
		@throw [OFInvalidArgumentException exception];

	if ((searchLength = data.count) == 0)
		return OFMakeRange(0, 0);

	if (searchLength > range.length)
		return OFMakeRange(OFNotFound, 0);

	search = data.items;

	if (options & OFDataSearchBackwards) {
		for (size_t i = range.length - searchLength;; i--) {
			if (memcmp(items + i * itemSize, search,
			    searchLength * itemSize) == 0)
				return OFMakeRange(i, searchLength);

			/* No match and we're at the last item */
			if (i == 0)
				break;
		}
	} else {
		for (size_t i = range.location;
		    i <= range.length - searchLength; i++)
			if (memcmp(items + i * itemSize, search,
			    searchLength * itemSize) == 0)
				return OFMakeRange(i, searchLength);
	}

	return OFMakeRange(OFNotFound, 0);
}

#ifdef OF_HAVE_FILES
- (void)writeToFile: (OFString *)path
{
	OFFile *file = [[OFFile alloc] initWithPath: path mode: @"w"];
	@try {
		[file writeBuffer: self.items
			   length: self.count * self.itemSize];
	} @finally {
		[file release];
	}
}
#endif

- (void)writeToIRI: (OFIRI *)IRI
{
	void *pool = objc_autoreleasePoolPush();

	[[OFIRIHandler openItemAtIRI: IRI mode: @"w"] writeData: self];

	objc_autoreleasePoolPop(pool);
}

- (OFData *)messagePackRepresentation
{
	OFMutableData *data;
	size_t count;

	if (self.itemSize != 1)
		@throw [OFNotImplementedException exceptionWithSelector: _cmd
								 object: self];

	count = self.count;

	if (count <= UINT8_MAX) {
		uint8_t type = 0xC4;
		uint8_t tmp = (uint8_t)count;

		data = [OFMutableData dataWithCapacity: count + 2];
		[data addItem: &type];
		[data addItem: &tmp];
	} else if (count <= UINT16_MAX) {
		uint8_t type = 0xC5;
		uint16_t tmp = OFToBigEndian16((uint16_t)count);

		data = [OFMutableData dataWithCapacity: count + 3];
		[data addItem: &type];
		[data addItems: &tmp count: sizeof(tmp)];
	} else if (count <= UINT32_MAX) {
		uint8_t type = 0xC6;
		uint32_t tmp = OFToBigEndian32((uint32_t)count);

		data = [OFMutableData dataWithCapacity: count + 5];
		[data addItem: &type];
		[data addItems: &tmp count: sizeof(tmp)];
	} else
		@throw [OFOutOfRangeException exception];

	[data addItems: self.items count: count];
	[data makeImmutable];

	return data;
}
@end

 *	    than one thread at the same time is not thread-safe, even if copy
 *	    was called to create one "instance" for every thread!
 */
@interface OFDatagramSocket: OFObject <OFCopying, OFReadyForReadingObserving,
    OFReadyForWritingObserving>
{
	OFSocketHandle _socket;
#ifdef OF_AMIGAOS
	LONG _socketID;
	int _family;	/* unused, reserved for ABI stability */
#endif
	bool _canBlock;
#ifdef OF_WII
	bool _canSendToBroadcastAddresses;
#endif
	id <OFDatagramSocketDelegate> _Nullable _delegate;
	OF_RESERVE_IVARS(OFDatagramSocket, 4)
}

/**
 * @brief Whether the socket can block.
 *
 * By default, a socket can block.
 *
 * @throw OFGetOptionFailedException The option could not be retrieved
 * @throw OFSetOptionFailedException The option could not be set
 */
@property (nonatomic) bool canBlock;

/**
 * @brief Whether the socket can send to broadcast addresses.
 *
 * @throw OFGetOptionFailedException The option could not be retrieved
 * @throw OFSetOptionFailedException The option could not be set
 */
@property (nonatomic) bool canSendToBroadcastAddresses;

/**
 * @brief The delegate for asynchronous operations on the socket.
 *

 */
- (void)asyncSendData: (OFData *)data
	     receiver: (const OFSocketAddress *)receiver
	  runLoopMode: (OFRunLoopMode)runLoopMode
		block: (OFDatagramSocketAsyncSendDataBlock)block;
#endif

/**
 * @brief Releases the socket from the current thread.
 *
 * This is necessary on some platforms in order to allow a different thread to
 * use the socket, e.g. on AmigaOS, but you should call it on all operating
 * systems before using the socket from a different thread.
 *
 * After calling this method, you must no longer use the socket until
 * @ref obtainSocketForCurrentThread has been called.
 */
- (void)releaseSocketFromCurrentThread;

/**
 * @brief Obtains the socket for the current thread.
 *
 * This is necessary on some platforms in order to allow a different thread to
 * use the socket, e.g. on AmigaOS, but you should call it on all operating
 * systems before using the socket from a different thread.
 *
 * You must only call this method after @ref releaseSocketFromCurrentThread has
 * been called from a different thread.
 */
- (void)obtainSocketForCurrentThread;

/**
 * @brief Cancels all pending asynchronous requests on the socket.
 */
- (void)cancelAsyncRequests;

/**
 * @brief Closes the socket so that it can neither receive nor send any more

#import "OFDatagramSocket.h"
#import "OFData.h"
#import "OFRunLoop.h"
#import "OFRunLoop+Private.h"
#import "OFSocket.h"
#import "OFSocket+Private.h"

#import "OFAlreadyOpenException.h"
#import "OFGetOptionFailedException.h"
#import "OFInitializationFailedException.h"
#import "OFNotOpenException.h"
#import "OFOutOfMemoryException.h"
#import "OFOutOfRangeException.h"
#import "OFReadFailedException.h"
#import "OFSetOptionFailedException.h"
#import "OFSetOptionFailedException.h"
#import "OFWriteFailedException.h"

#if defined(OF_AMIGAOS) && !defined(UNIQUE_ID)
# define UNIQUE_ID -1
#endif

@implementation OFDatagramSocket
@synthesize delegate = _delegate;

+ (void)initialize
{
	if (self != [OFDatagramSocket class])

	@try {
		if (self.class == [OFDatagramSocket class]) {
			[self doesNotRecognizeSelector: _cmd];
			abort();
		}

		_socket = OFInvalidSocketHandle;
#ifdef OF_HAVE_AMIGAOS
		_socketID = -1;
#endif
		_canBlock = true;
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;

		@throw [OFReadFailedException
		    exceptionWithObject: self
			requestedLength: length
				  errNo: OFSocketErrNo()];
#endif

	if (sender != NULL) {
		struct sockaddr *sa = (struct sockaddr *)&sender->sockaddr;

		if (sender->length >= (socklen_t)sizeof(sa->sa_family)) {
			switch (sa->sa_family) {
			case AF_INET:
				sender->family = OFSocketAddressFamilyIPv4;
				break;
#ifdef OF_HAVE_IPV6
			case AF_INET6:
				sender->family = OFSocketAddressFamilyIPv6;
				break;
#endif
#ifdef OF_HAVE_UNIX_SOCKETS
			case AF_UNIX:
				sender->family = OFSocketAddressFamilyUNIX;
				break;
#endif
#ifdef OF_HAVE_IPX
			case AF_IPX:
				sender->family = OFSocketAddressFamilyIPX;
				break;
#endif
#ifdef OF_HAVE_APPLETALK
			case AF_APPLETALK:
				sender->family = OFSocketAddressFamilyAppleTalk;
				break;
#endif
			default:
				sender->family = OFSocketAddressFamilyUnknown;
				break;
			}
		} else
			sender->family = OFSocketAddressFamilyUnknown;
	}

	return ret;
}

- (void)asyncReceiveIntoBuffer: (void *)buffer length: (size_t)length
{

	if (_socket > INT_MAX)
		@throw [OFOutOfRangeException exception];

	return (int)_socket;
#endif
}

- (void)releaseSocketFromCurrentThread
{
#ifdef OF_AMIGAOS
	if (_socket == OFInvalidSocketHandle)
		@throw [OFNotOpenException exceptionWithObject: self];

	if ((_socketID = ReleaseSocket(_socket, UNIQUE_ID)) == -1) {
		switch (Errno()) {
		case ENOMEM:
			@throw [OFOutOfMemoryException
			    exceptionWithRequestedSize: 0];
		case EBADF:
			@throw [OFNotOpenException exceptionWithObject: self];
		default:
			OFEnsure(0);
		}
	}

	_socket = OFInvalidSocketHandle;
#endif
}

- (void)obtainSocketForCurrentThread
{
#ifdef OF_AMIGAOS
	if (_socket != OFInvalidSocketHandle)
		@throw [OFAlreadyOpenException exceptionWithObject: self];

	if (_socketID == -1)
		@throw [OFNotOpenException exceptionWithObject: self];

	/*
	 * FIXME: We should store these, but that requires changing all
	 *	  subclasses. This only becomes a problem if IPv6 support ever
	 *	  gets added.
	 */
	_socket = ObtainSocket(_socketID, AF_INET, SOCK_DGRAM, 0);
	if (_socket == OFInvalidSocketHandle)
		@throw [OFInitializationFailedException
		    exceptionWithClass: self.class];

	_socketID = -1;
#endif
}

- (void)close
{
	if (_socket == OFInvalidSocketHandle)
		@throw [OFNotOpenException exceptionWithObject: self];

	closesocket(_socket);
	_socket = OFInvalidSocketHandle;
}
@end

@class OFConstantString;

/**
 * @class OFDate OFDate.h ObjFW/OFDate.h
 *
 * @brief A class for storing, accessing and comparing dates.
 */



@interface OFDate: OFObject <OFCopying, OFComparing,
    OFMessagePackRepresentation>




#ifdef OF_HAVE_CLASS_PROPERTIES
@property (class, readonly, nonatomic) OFDate *distantFuture;
@property (class, readonly, nonatomic) OFDate *distantPast;
#endif

/**
 * @brief The microsecond of the date.

 */
- (OFComparisonResult)compare: (OFDate *)date;

/**
 * @brief Creates a string of the date with the specified format.
 *
 * See the man page for `strftime` for information on the format.
 *
 * @warning The format is currently limited to the following format specifiers:
 *	    %%a, %%b, %%d, %%e, %%H, %%m, %%M, %%S, %%y, %%Y, %%z, %%, %%n and
 *	    %%t.
 *
 * @param format The format for the date string
 * @return A new, autoreleased OFString
 * @throw OFInvalidFormatException The specified format is invalid
 */
- (OFString *)dateStringWithFormat: (OFConstantString *)format;

/**
 * @brief Creates a string of the local date with the specified format.
 *
 * See the man page for `strftime` for information on the format.
 *
 * @warning The format is currently limited to the following format specifiers:
 *	    %%a, %%b, %%d, %%e, %%H, %%m, %%M, %%S, %%y, %%Y, %%z, %%, %%n and
 *	    %%t.
 *
 * @param format The format for the date string
 * @return A new, autoreleased OFString
 * @throw OFInvalidFormatException The specified format is invalid
 */
- (OFString *)localDateStringWithFormat: (OFConstantString *)format;

#include <limits.h>
#include <time.h>
#include <math.h>

#include <sys/time.h>

#import "OFDate.h"
#import "OFConcreteDate.h"
#import "OFData.h"
#import "OFDictionary.h"
#import "OFMessagePackExtension.h"
#ifdef OF_HAVE_THREADS
# import "OFMutex.h"
#endif
#import "OFStrFTime.h"
#import "OFStrPTime.h"
#import "OFString.h"
#import "OFSystemInfo.h"
#import "OFTaggedPointerDate.h"
#import "OFXMLAttribute.h"

#import "OFInitializationFailedException.h"
#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFOutOfMemoryException.h"
#import "OFOutOfRangeException.h"

#if defined(OF_AMIGAOS_M68K) || defined(OF_MINT)
/* amiga-gcc and freemint-gcc do not have trunc() */
# define trunc(x) ((int64_t)(x))
#endif

@interface OFPlaceholderDate: OFDate

@end

@interface OFConcreteDateSingleton: OFConcreteDate
@end









static struct {
	Class isa;
} placeholder;

static OFConcreteDateSingleton *zeroDate, *distantFuture, *distantPast;




static void
initZeroDate(void)
{
	zeroDate = [[OFConcreteDateSingleton alloc]
	    initWithTimeIntervalSince1970: 0];
}

static void
initDistantFuture(void)
{
	distantFuture = [[OFConcreteDateSingleton alloc]
	    initWithTimeIntervalSince1970: 64060588800.0];
}

static void
initDistantPast(void)
{
	distantPast = [[OFConcreteDateSingleton alloc]
	    initWithTimeIntervalSince1970: -62167219200.0];
}

static OFTimeInterval
now(void)
{
	struct timeval tv;

	seconds += tm->tm_sec;
	/* Time zone */
	seconds += -(double)tz * 60;

	return seconds;
}

@implementation OFConcreteDateSingleton




OF_SINGLETON_METHODS













@end

@implementation OFPlaceholderDate
#ifdef __clang__
/* We intentionally don't call into super, so silence the warning. */
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wunknown-pragmas"
# pragma clang diagnostic ignored "-Wobjc-designated-initializers"
#endif
- (instancetype)initWithTimeIntervalSince1970: (OFTimeInterval)seconds

#if defined(OF_OBJFW_RUNTIME) && UINTPTR_MAX == UINT64_MAX
	value = OFFromBigEndian64(OFDoubleToRawUInt64(OFToBigEndianDouble(
	    seconds)));

	/* Almost all dates fall into this range. */
	if (value & (UINT64_C(4) << 60)) {
		id ret = [OFTaggedPointerDate
		    dateWithUInt64TimeIntervalSince1970: value];

		if (ret != nil)
			return ret;
	}
#endif

	return (id)[[OFConcreteDate alloc]
	    initWithTimeIntervalSince1970: seconds];
}
#ifdef __clang__
# pragma clang diagnostic pop
#endif







OF_SINGLETON_METHODS

@end






@implementation OFDate
+ (void)initialize
{
#ifdef OF_WINDOWS
	HMODULE module;
#endif

	if (self != [OFDate class])
		return;

	object_setClass((id)&placeholder, [OFPlaceholderDate class]);

#if (!defined(HAVE_GMTIME_R) || !defined(HAVE_LOCALTIME_R)) && \
    defined(OF_HAVE_THREADS)
	mutex = [[OFMutex alloc] init];
	atexit(releaseMutex);
#endif

#ifdef OF_WINDOWS
	if ((module = LoadLibrary("msvcrt.dll")) != NULL)
		_mktime64FuncPtr = (__time64_t (*)(struct tm *))
		    GetProcAddress(module, "_mktime64");
#endif









}

+ (instancetype)alloc
{
	if (self == [OFDate class])
		return (id)&placeholder;

- (instancetype)init
{
	return [self initWithTimeIntervalSince1970: now()];
}

- (instancetype)initWithTimeIntervalSince1970: (OFTimeInterval)seconds
{
	if ([self isMemberOfClass: [OFDate class]]) {
		@try {
			[self doesNotRecognizeSelector: _cmd];
		} @catch (id e) {
			[self release];
			@throw e;
		}

		abort();
	}

	return [super init];
}

- (instancetype)initWithTimeIntervalSinceNow: (OFTimeInterval)seconds
{
	return [self initWithTimeIntervalSince1970: now() + seconds];
}

		return OFOrderedDescending;

	return OFOrderedSame;
}

- (OFString *)description
{
	return [self dateStringWithFormat: @"%Y-%m-%dT%H:%M:%S%z"];
}

- (OFData *)messagePackRepresentation
{
	void *pool = objc_autoreleasePoolPush();
	OFTimeInterval timeInterval = self.timeIntervalSince1970;
	int64_t seconds = (int64_t)timeInterval;

- (OFString *)dateStringWithFormat: (OFConstantString *)format
{
	OFString *ret;
	OFTimeInterval timeInterval = self.timeIntervalSince1970;
	time_t seconds = (time_t)timeInterval;
	struct tm tm;
	size_t pageSize;

	char *buffer;




	if (seconds != trunc(timeInterval))
		@throw [OFOutOfRangeException exception];

#ifdef HAVE_GMTIME_R
	if (gmtime_r(&seconds, &tm) == NULL)
		@throw [OFOutOfRangeException exception];

	}
# endif
#endif

	pageSize = [OFSystemInfo pageSize];
	buffer = OFAllocMemory(1, pageSize);
	@try {

		if (OFStrFTime(buffer, pageSize, format.UTF8String, &tm,
		    0) == 0)
			@throw [OFOutOfRangeException exception];

		ret = [OFString stringWithUTF8String: buffer];







	} @finally {
		OFFreeMemory(buffer);
	}

	return ret;
}

- (OFString *)localDateStringWithFormat: (OFConstantString *)format
{
	OFString *ret;
	OFTimeInterval timeInterval = self.timeIntervalSince1970;
	time_t seconds = (time_t)timeInterval;
	struct tm tm;
	size_t pageSize;

	char *buffer;




	if (seconds != trunc(timeInterval))
		@throw [OFOutOfRangeException exception];

#ifdef HAVE_LOCALTIME_R
	if (localtime_r(&seconds, &tm) == NULL)
		@throw [OFOutOfRangeException exception];

	}
# endif
#endif

	pageSize = [OFSystemInfo pageSize];
	buffer = OFAllocMemory(1, pageSize);
	@try {

		if (OFStrFTime(buffer, pageSize, format.UTF8String, &tm,
		    0) == 0)
			@throw [OFOutOfRangeException exception];

		ret = [OFString stringWithUTF8String: buffer];







	} @finally {
		OFFreeMemory(buffer);
	}

	return ret;
}

		return otherDate;

	return self;
}

- (OFTimeInterval)timeIntervalSince1970
{
	OF_UNRECOGNIZED_SELECTOR
}

- (OFTimeInterval)timeIntervalSinceDate: (OFDate *)otherDate
{
	return self.timeIntervalSince1970 - otherDate.timeIntervalSince1970;
}

 *
 * @param firstKey The first key
 * @return A new autoreleased OFDictionary
 */
+ (instancetype)dictionaryWithKeysAndObjects: (KeyType)firstKey, ...
    OF_SENTINEL;

/**
 * @brief Initializes an already allocated OFDictionary to be empty.
 *
 * @return An initialized OFDictionary
 */
- (instancetype)init OF_DESIGNATED_INITIALIZER;

/**
 * @brief Initializes an already allocated OFDictionary with the specified
 *	  OFDictionary.
 *
 * @param dictionary An OFDictionary
 * @return An initialized OFDictionary
 */

 * @param keys An array of keys
 * @param objects An array of objects
 * @param count The number of objects in the arrays
 * @return An initialized OFDictionary
 */
- (instancetype)initWithObjects: (ObjectType const _Nonnull *_Nonnull)objects
			forKeys: (KeyType const _Nonnull *_Nonnull)keys
			  count: (size_t)count OF_DESIGNATED_INITIALIZER;

/**
 * @brief Initializes an already allocated OFDictionary with the specified keys
 *	  and objects.
 *
 * @param firstKey The first key
 * @return An initialized OFDictionary

#include "config.h"

#include <stdlib.h>

#import "OFDictionary.h"
#import "OFArray.h"
#import "OFCharacterSet.h"
#import "OFConcreteDictionary.h"
#import "OFData.h"
#import "OFEnumerator.h"

#import "OFString.h"

#import "OFInvalidArgumentException.h"
#import "OFOutOfRangeException.h"
#import "OFUndefinedKeyException.h"

static struct {
	Class isa;
} placeholder;

@interface OFDictionary ()
- (OFString *)
    of_JSONRepresentationWithOptions: (OFJSONRepresentationOptions)options
			       depth: (size_t)depth;
@end

@interface OFPlaceholderDictionary: OFDictionary
@end

OF_DIRECT_MEMBERS
@interface OFDictionaryObjectEnumerator: OFEnumerator
{
	OFDictionary *_dictionary;
	OFEnumerator *_keyEnumerator;
}

- (instancetype)initWithDictionary: (OFDictionary *)dictionary;
@end

@implementation OFPlaceholderDictionary
#ifdef __clang__
/* We intentionally don't call into super, so silence the warning. */
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wunknown-pragmas"
# pragma clang diagnostic ignored "-Wobjc-designated-initializers"
#endif
- (instancetype)init
{
	return (id)[[OFConcreteDictionary alloc] init];
}

- (instancetype)initWithDictionary: (OFDictionary *)dictionary
{
	return (id)[[OFConcreteDictionary alloc]
	    initWithDictionary: dictionary];
}

- (instancetype)initWithObject: (id)object forKey: (id)key
{
	return (id)[[OFConcreteDictionary alloc] initWithObject: object
							 forKey: key];
}

- (instancetype)initWithObjects: (OFArray *)objects forKeys: (OFArray *)keys
{
	return (id)[[OFConcreteDictionary alloc] initWithObjects: objects
							 forKeys: keys];
}

- (instancetype)initWithObjects: (id const *)objects
			forKeys: (id const *)keys
			  count: (size_t)count
{
	return (id)[[OFConcreteDictionary alloc] initWithObjects: objects
							 forKeys: keys
							   count: count];
}

- (instancetype)initWithKeysAndObjects: (id <OFCopying>)firstKey, ...
{
	id ret;
	va_list arguments;

	va_start(arguments, firstKey);
	ret = [[OFConcreteDictionary alloc] initWithKey: firstKey
					      arguments: arguments];
	va_end(arguments);

	return ret;
}

- (instancetype)initWithKey: (id <OFCopying>)firstKey
		  arguments: (va_list)arguments
{
	return (id)[[OFConcreteDictionary alloc] initWithKey: firstKey
						   arguments: arguments];
}
#ifdef __clang__




# pragma clang diagnostic pop




#endif



OF_SINGLETON_METHODS




@end

@implementation OFDictionary
+ (void)initialize
{
	if (self == [OFDictionary class])
		object_setClass((id)&placeholder,
		    [OFPlaceholderDictionary class]);
}

+ (instancetype)alloc
{
	if (self == [OFDictionary class])
		return (id)&placeholder;

	va_end(arguments);

	return ret;
}

- (instancetype)init
{
	if ([self isMemberOfClass: [OFDictionary class]] ||
	    [self isMemberOfClass: [OFMutableDictionary class]]) {
		@try {
			[self doesNotRecognizeSelector: _cmd];
		} @catch (id e) {
			[self release];
			@throw e;
		}

		abort();
	}

	return [super init];
}

- (instancetype)initWithDictionary: (OFDictionary *)dictionary
{
	void *pool = objc_autoreleasePoolPush();
	id const *objects, *keys;
	size_t count;

	@try {
		OFArray *objects_ = [dictionary.objectEnumerator allObjects];
		OFArray *keys_ = [dictionary.keyEnumerator allObjects];

		count = dictionary.count;

		if (count != keys_.count || count != objects_.count)
			@throw [OFInvalidArgumentException exception];

		objects = objects_.objects;
		keys = keys_.objects;
	} @catch (id e) {
		[self release];
		@throw e;
	}

	@try {
		self = [self initWithObjects: objects
				     forKeys: keys
				       count: count];
	} @finally {
		objc_autoreleasePoolPop(pool);
	}

	return self;
}

- (instancetype)initWithObject: (id)object forKey: (id)key
{
	@try {
		if (key == nil || object == nil)
			@throw [OFInvalidArgumentException exception];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return [self initWithObjects: &object forKeys: &key count: 1];
}

- (instancetype)initWithObjects: (OFArray *)objects_ forKeys: (OFArray *)keys_
{
	void *pool = objc_autoreleasePoolPush();
	id const *objects, *keys;
	size_t count;

	@try {
		count = objects_.count;

		if (count != keys_.count)
			@throw [OFInvalidArgumentException exception];

		objects = objects_.objects;
		keys = keys_.objects;
	} @catch (id e) {
		[self release];
		@throw e;
	}

	self = [self initWithObjects: objects forKeys: keys count: count];

	objc_autoreleasePoolPop(pool);

	return self;
}

#ifdef __clang__
/* We intentionally don't call into super, so silence the warning. */
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wunknown-pragmas"
# pragma clang diagnostic ignored "-Wobjc-designated-initializers"
#endif
- (instancetype)initWithObjects: (id const *)objects
			forKeys: (id const *)keys
			  count: (size_t)count
{
	OF_INVALID_INIT_METHOD
}
#ifdef __clang__
# pragma clang diagnostic pop
#endif

- (instancetype)initWithKeysAndObjects: (id)firstKey, ...
{
	id ret;
	va_list arguments;

	va_start(arguments, firstKey);
	ret = [self initWithKey: firstKey arguments: arguments];
	va_end(arguments);

	return ret;
}

- (instancetype)initWithKey: (id)firstKey arguments: (va_list)arguments
{
	size_t count = 1;
	id *objects = NULL, *keys = NULL;
	va_list argumentsCopy;

	if (firstKey == nil)
		return [self init];

	va_copy(argumentsCopy, arguments);
	while (va_arg(argumentsCopy, id) != nil)
		count++;

	@try {
		size_t i = 0;
		id key, object;

		if (count % 2 != 0)
			@throw [OFInvalidArgumentException exception];

		count /= 2;

		objects = OFAllocMemory(count, sizeof(id));
		keys = OFAllocMemory(count, sizeof(id));

		while ((key = va_arg(arguments, id)) != nil &&
		    (object = va_arg(arguments, id)) != nil) {
			OFEnsure(i < count);

			objects[i] = object;
			keys[i] = key;

			i++;
		}
	} @catch (id e) {
		OFFreeMemory(objects);
		OFFreeMemory(keys);

		[self release];
		@throw e;
	}

	@try {
		self = [self initWithObjects: objects
				     forKeys: keys
				       count: count];
	} @finally {
		OFFreeMemory(objects);
		OFFreeMemory(keys);
	}

	return self;
}

- (id)objectForKey: (id)key
{
	OF_UNRECOGNIZED_SELECTOR
}

	    initWithDictionary: self] autorelease];
}

- (int)countByEnumeratingWithState: (OFFastEnumerationState *)state
			   objects: (id *)objects
			     count: (int)count
{
	static unsigned long dummyMutations;
	OFEnumerator *enumerator;
	int i;

	memcpy(&enumerator, state->extra, sizeof(enumerator));

	if (enumerator == nil) {
		enumerator = [self keyEnumerator];
		memcpy(state->extra, &enumerator, sizeof(enumerator));
	}

	state->itemsPtr = objects;
	state->mutationsPtr = &dummyMutations;

	for (i = 0; i < count; i++) {
		id object = [enumerator nextObject];

		if (object == nil)
			return i;

	return ret;
}

- (int)countByEnumeratingWithState: (OFFastEnumerationState *)state
			   objects: (id *)objects
			     count: (int)count
{
	static unsigned long dummyMutations;
	int i;

	state->itemsPtr = objects;
	state->mutationsPtr = &dummyMutations;

	for (i = 0; i < count; i++) {
		id object = [self nextObject];

		if (object == nil)
			return i;

		objects[i] = object;
	}

	return i;
}
@end

#else
	OFTimeInterval lastAccessTime = lastAccessDate.timeIntervalSince1970;
	OFTimeInterval modificationTime =
	    modificationDate.timeIntervalSince1970;
	struct timeval times[2] = {
		{
			.tv_sec = (time_t)lastAccessTime,
			.tv_usec = (int)((lastAccessTime -
			    (time_t)lastAccessTime) * 1000000)
		},
		{
			.tv_sec = (time_t)modificationTime,
			.tv_usec = (int)((modificationTime -
			    (time_t)modificationTime) * 1000000)
		},
	};

	if (utimes([path cStringWithEncoding: [OFLocale encoding]], times) != 0)
		@throw [OFSetItemAttributesFailedException
		    exceptionWithIRI: IRI
			  attributes: attributes

	if (IRI == nil)
		@throw [OFInvalidArgumentException exception];

	if (![IRI.scheme isEqual: _scheme])
		@throw [OFInvalidArgumentException exception];

	ret = (statWrapper(IRI.fileSystemRepresentation, &s) == 0);






	objc_autoreleasePoolPop(pool);

	return ret;
}

- (bool)directoryExistsAtIRI: (OFIRI *)IRI