Index: .gitignore
==================================================================
--- .gitignore
+++ .gitignore
@@ -34,5 +34,6 @@
 tests/tests.exe
 tests/EBOOT.PBP
 tests/PARAM.SFO
 tests/objc_sync/objc_sync
 utils/objfw-config
+utils/objfw-unzip

Index: utils/Makefile
==================================================================
--- utils/Makefile
+++ utils/Makefile
@@ -1,7 +1,9 @@
+PROG = objfw-unzip
+SRCS = objfw-unzip.m
+
 include ../buildsys.mk
-include ../extra.mk
 
 DISTCLEAN = objfw-config
 
 install-extra: objfw-config objfw-compile
 	for i in objfw-config objfw-compile; do \
@@ -21,5 +23,9 @@
 			else \
 				${DELETE_FAILED}; \
 			fi \
 		fi \
 	done
+
+CPPFLAGS += -I../src -I../src/runtime -I..
+LIBS := -L../src -lobjfw ${LIBS}
+LD = ${OBJC}

ADDED   utils/objfw-unzip.m
Index: utils/objfw-unzip.m
==================================================================
--- utils/objfw-unzip.m
+++ utils/objfw-unzip.m
@@ -0,0 +1,142 @@
+#import "OFApplication.h"
+#import "OFArray.h"
+#import "OFDictionary.h"
+#import "OFFile.h"
+#import "OFStdIOStream.h"
+#import "OFZIPArchive.h"
+#import "OFZIPArchiveEntry.h"
+
+#import "autorelease.h"
+#import "macros.h"
+
+#define BUFFER_SIZE 4096
+
+@interface UnZIP: OFObject
+- (void)extractAllFilesFromArchive: (OFZIPArchive*)archive;
+@end
+
+OF_APPLICATION_DELEGATE(UnZIP)
+
+@implementation UnZIP
+- (void)applicationDidFinishLaunching
+{
+	OFEnumerator *enumerator = [[OFApplication arguments] objectEnumerator];
+	OFString *file;
+
+	while ((file = [enumerator nextObject]) != nil) {
+		void *pool = objc_autoreleasePoolPush();
+
+		[self extractAllFilesFromArchive:
+		    [OFZIPArchive archiveWithPath: file]];
+
+		objc_autoreleasePoolPop(pool);
+	}
+
+	[OFApplication terminate];
+}
+
+- (void)extractAllFilesFromArchive: (OFZIPArchive*)archive
+{
+	OFEnumerator *enumerator = [[archive entries] objectEnumerator];
+	OFZIPArchiveEntry *entry;
+	bool override = false;
+
+	while ((entry = [enumerator nextObject]) != nil) {
+		void *pool = objc_autoreleasePoolPush();
+		OFString *fileName = [entry fileName];
+		OFString *outFileName = [fileName stringByStandardizingPath];
+		OFEnumerator *componentEnumerator;
+		OFString *component, *directory;
+		OFStream *stream;
+		OFFile *output;
+		char buffer[BUFFER_SIZE];
+		off_t written = 0, size = [entry uncompressedSize];
+		int_fast8_t percent = -1, newPercent;
+
+#ifndef _WIN32
+		if ([outFileName hasPrefix: @"/"]) {
+#else
+		if ([outFileName hasPrefix: @"/"] ||
+		    [outFileName containsString: @":"]) {
+#endif
+			[of_stdout writeFormat: @"Refusing to extract %@!\n",
+						fileName];
+			[OFApplication terminateWithStatus: 1];
+		}
+
+		componentEnumerator =
+		    [[outFileName pathComponents] objectEnumerator];
+		while ((component = [componentEnumerator nextObject]) != nil) {
+			if ([component isEqual: OF_PATH_PARENT_DIRECTORY]) {
+				[of_stdout writeFormat:
+				    @"Refusing to extract %@!\n", fileName];
+				[OFApplication terminateWithStatus: 1];
+			}
+		}
+
+		[of_stdout writeFormat: @"Extracting %@...", fileName];
+
+		if ([fileName hasSuffix: @"/"]) {
+			[OFFile createDirectoryAtPath: outFileName
+					createParents: true];
+			[of_stdout writeLine: @" done"];
+			continue;
+		}
+
+		directory = [outFileName stringByDeletingLastPathComponent];
+		if (![OFFile directoryExistsAtPath: directory])
+			[OFFile createDirectoryAtPath: directory
+					createParents: true];
+
+		if ([OFFile fileExistsAtPath: outFileName] && !override) {
+			OFString *line;
+
+			do {
+				[of_stderr writeFormat:
+				    @"\rOverride %@? [ynA] ", fileName];
+
+				line = [of_stdin readLine];
+			} while (![line isEqual: @"y"] &&
+			    ![line isEqual: @"n"] && ![line isEqual: @"A"]);
+
+			if ([line isEqual: @"n"]) {
+				[of_stdout writeFormat: @"Skipping %@...\n",
+							fileName];
+				continue;
+			}
+
+			if ([line isEqual: @"A"])
+				override = true;
+
+			[of_stdout writeFormat: @"Extracting %@...", fileName];
+		}
+
+		stream = [archive streamForReadingFile: fileName];
+		output = [OFFile fileWithPath: outFileName
+					 mode: @"w"];
+
+		while (![stream isAtEndOfStream]) {
+			size_t length = [stream readIntoBuffer: buffer
+							length: BUFFER_SIZE];
+			[output writeBuffer: buffer
+				     length: length];
+
+			written += length;
+			newPercent = (written == size
+			    ? 100 : written * 100 / size);
+
+			if (percent != newPercent) {
+				percent = newPercent;
+
+				[of_stdout writeFormat:
+				    @"\rExtracting %@... %3u%%",
+				    fileName, percent];
+			}
+		}
+
+		[of_stdout writeFormat: @"\rExtracting %@... done\n", fileName];
+
+		objc_autoreleasePoolPop(pool);
+	}
+}
+@end