diff --git a/CMakeLists.txt b/CMakeLists.txt
index c38ccfc..64f095d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,6 +5,7 @@ set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
 
 include(CompileCheck)
 include(VersionString) # TODO use this
+include(CheckSymbolExists)
 
 # Force re-checking libraries if the compiler or compiler flags change.
 if((NOT LAST_CMAKE_CXX_FLAGS STREQUAL CMAKE_CXX_FLAGS)
@@ -34,6 +35,7 @@ include_directories(SYSTEM "${LZMA_INCLUDE_DIR}")
 # TODO debugging-only
 add_cxxflag("-ggdb")
 add_cxxflag("-O3")
+add_definitions(-D_DEBUG)
 
 # TODO should probably be supplied by the user
 add_cxxflag("-march=native")
@@ -70,6 +72,9 @@ if(UNITY_BUILD)
 	add_cxxflag("-fwhole-program")
 endif()
 
+check_symbol_exists(isatty "unistd.h" HAVE_ISATTY)
+check_symbol_exists(ioctl "sys/ioctl.h" HAVE_IOCTL)
+
 set(INNOEXTRACT_SOURCES
 	
 	src/crypto/Adler-32.cpp
@@ -106,15 +111,18 @@ set(INNOEXTRACT_SOURCES
 	src/stream/LzmaFilter.cpp
 	src/stream/SliceReader.cpp
 	
+	src/util/console.cpp
 	src/util/load.cpp
-	src/util/color.cpp
+	src/util/log.cpp
 	
 	src/InnoExtract.cpp
 )
 
 file(GLOB_RECURSE ALL_INCLUDES "${CMAKE_SOURCE_DIR}/src/*.hpp")
 
-include_directories(src)
+include_directories(src ${CMAKE_CURRENT_BINARY_DIR})
+
+configure_file("src/configure.hpp.in" "configure.hpp")
 
 add_executable(innoextract ${INNOEXTRACT_SOURCES} ${ALL_INCLUDES})
 target_link_libraries(innoextract ${LIBRARIES})
diff --git a/src/InnoExtract.cpp b/src/InnoExtract.cpp
index d3a8119..2a3f972 100644
--- a/src/InnoExtract.cpp
+++ b/src/InnoExtract.cpp
@@ -11,8 +11,6 @@
 #include <ctime>
 #include <map>
 
-#include <sys/ioctl.h>
-
 #include <boost/shared_ptr.hpp>
 #include <boost/foreach.hpp>
 #include <boost/ref.hpp>
@@ -56,75 +54,17 @@
 #include "stream/ChecksumFilter.hpp"
 #include "stream/InstructionFilter.hpp"
 
-#include "util/color.hpp"
+#include "util/console.hpp"
 #include "util/load.hpp"
+#include "util/log.hpp"
 #include "util/output.hpp"
 
-class progress {
-	
-public:
-	
-	static void show(float value, const std::string & label) {
-		
-		struct winsize w;
-		ioctl(0, TIOCGWINSZ, &w);
-		
-		clear();
-		
-		std::ios_base::fmtflags flags = std::cout.flags();
-		
-		size_t progress_length = w.ws_col - label.length() - 6 - 2 - 2 - 1;
-		
-		if(progress_length > 10) {
-			
-			size_t progress = size_t(ceil(float(progress_length) * value));
-			
-			std::cout << '[';
-			for(size_t i = 0; i < progress; i++) {
-				std::cout << '=';
-			}
-			std::cout << '>';
-			for(size_t i = progress; i < progress_length; i++) {
-				std::cout << ' ';
-			}
-			std::cout << ']';
-			
-		}
-		
-		std::cout << std::right << std::fixed << std::setprecision(1) << std::setfill(' ')
-		          << std::setw(5) << (value * 100) << "% " << label;
-		std::cout.flush();
-		
-		std::cout.flags(flags);
-		
-	}
-	
-	static void clear() {
-		std::cout << "\33[2K\r";
-	}
-	
-};
-
 using std::cout;
 using std::string;
 using std::endl;
 using std::setw;
 using std::setfill;
 
-template <class T>
-void discard(T & is, uint64_t bytes) {
-	
-	std::cout << "discarding " << print_bytes(bytes) << std::endl;
-	
-	char buf[1024];
-	while(bytes) {
-		std::streamsize n = std::streamsize(std::min<uint64_t>(bytes, ARRAY_SIZE(buf)));
-		is.read(buf, n);
-		bytes -= uint64_t(n);
-	}
-	
-}
-
 namespace io = boost::iostreams;
 namespace fs = boost::filesystem;
 
@@ -274,13 +214,17 @@ static void readWizardImageAndDecompressor(std::istream & is, const InnoVersion
 	}
 	
 	if(is.fail()) {
-		LogError << "error reading misc setup data";
+		log_error << "error reading misc setup data";
 	}
 	
 }
 
 int main(int argc, char * argv[]) {
 	
+	color::init();
+	
+	logger::debug = true;
+	
 	if(argc <= 1) {
 		std::cout << "usage: innoextract <Inno Setup installer>" << endl;
 		return 1;
@@ -289,7 +233,7 @@ int main(int argc, char * argv[]) {
 	std::ifstream ifs(argv[1], std::ios_base::in | std::ios_base::binary | std::ios_base::ate);
 	
 	if(!ifs.is_open()) {
-		LogError << "error opening file";
+		log_error << "error opening file";
 		return 1;
 	}
 	
@@ -319,12 +263,12 @@ int main(int argc, char * argv[]) {
 	InnoVersion version;
 	version.load(ifs);
 	if(ifs.fail()) {
-		LogError << "error reading setup data version!";
+		log_error << "error reading setup data version!";
 		return 1;
 	}
 	
 	if(!version.known) {
-		LogError << "unknown version!";
+		log_error << "unknown version!";
 		return 1; // TODO
 	}
 	
@@ -332,7 +276,7 @@ int main(int argc, char * argv[]) {
 	
 	boost::shared_ptr<std::istream> is(BlockReader::get(ifs, version));
 	if(!is) {
-		LogError << "error reading block";
+		log_error << "error reading block";
 		return 1;
 	}
 	
@@ -341,7 +285,7 @@ int main(int argc, char * argv[]) {
 	SetupHeader header;
 	header.load(*is, version);
 	if(is->fail()) {
-		LogError << "error reading setup data header!";
+		log_error << "error reading setup data header!";
 		return 1;
 	}
 	
@@ -459,7 +403,7 @@ int main(int argc, char * argv[]) {
 		LanguageEntry & entry = languages[i];
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading language entry #" << i;
+			log_error << "error reading language entry #" << i;
 		}
 		
 		cout << " - " << quoted(entry.name) << ':' << endl;
@@ -498,11 +442,11 @@ int main(int argc, char * argv[]) {
 		MessageEntry entry;
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading custom message entry #" << i;
+			log_error << "error reading custom message entry #" << i;
 		}
 		
 		if(entry.language >= 0 ? size_t(entry.language) >= languages.size() : entry.language != -1) {
-			LogWarning << "unexpected language index: " << entry.language;
+			log_warning << "unexpected language index: " << entry.language;
 		}
 		
 		uint32_t codepage;
@@ -534,7 +478,7 @@ int main(int argc, char * argv[]) {
 		PermissionEntry entry;
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading permission entry #" << i;
+			log_error << "error reading permission entry #" << i;
 		}
 		
 		cout << " - " << entry.permissions.length() << " bytes";
@@ -549,7 +493,7 @@ int main(int argc, char * argv[]) {
 		SetupTypeEntry entry;
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading type entry #" << i;
+			log_error << "error reading type entry #" << i;
 		}
 		
 		cout << " - " << quoted(entry.name) << ':' << endl;
@@ -574,7 +518,7 @@ int main(int argc, char * argv[]) {
 		SetupComponentEntry entry;
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading component entry #" << i;
+			log_error << "error reading component entry #" << i;
 		}
 		
 		cout << " - " << quoted(entry.name) << ':' << endl;
@@ -603,7 +547,7 @@ int main(int argc, char * argv[]) {
 		SetupTaskEntry entry;
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading task entry #" << i;
+			log_error << "error reading task entry #" << i;
 		}
 		
 		cout << " - " << quoted(entry.name) << ':' << endl;
@@ -633,7 +577,7 @@ int main(int argc, char * argv[]) {
 		DirectoryEntry & entry = directories[i];
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading directory entry #" << i;
+			log_error << "error reading directory entry #" << i;
 		}
 		
 		cout << " - " << quoted(entry.name) << ':' << endl;
@@ -663,7 +607,7 @@ int main(int argc, char * argv[]) {
 		FileEntry & entry = files[i];
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading file entry #" << i;
+			log_error << "error reading file entry #" << i;
 		}
 		
 		if(entry.destination.empty()) {
@@ -701,7 +645,7 @@ int main(int argc, char * argv[]) {
 		IconEntry entry;
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading icon entry #" << i;
+			log_error << "error reading icon entry #" << i;
 		}
 		
 		cout << " - " << quoted(entry.name) << " -> " << quoted(entry.filename) << endl;
@@ -731,7 +675,7 @@ int main(int argc, char * argv[]) {
 		IniEntry entry;
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading ini entry #" << i;
+			log_error << "error reading ini entry #" << i;
 		}
 		
 		cout << " - in " << quoted(entry.inifile);
@@ -752,7 +696,7 @@ int main(int argc, char * argv[]) {
 		RegistryEntry entry;
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading registry entry #" << i;
+			log_error << "error reading registry entry #" << i;
 		}
 		
 		cout << " - ";
@@ -793,7 +737,7 @@ int main(int argc, char * argv[]) {
 		DeleteEntry entry;
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading install delete entry #" << i;
+			log_error << "error reading install delete entry #" << i;
 		}
 		
 		cout << " - " << quoted(entry.name)
@@ -811,7 +755,7 @@ int main(int argc, char * argv[]) {
 		DeleteEntry entry;
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading uninstall delete entry #" << i;
+			log_error << "error reading uninstall delete entry #" << i;
 		}
 		
 		cout << " - " << quoted(entry.name)
@@ -829,7 +773,7 @@ int main(int argc, char * argv[]) {
 		RunEntry entry;
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading install run entry #" << i;
+			log_error << "error reading install run entry #" << i;
 		}
 		
 		print(cout, entry, header);
@@ -844,7 +788,7 @@ int main(int argc, char * argv[]) {
 		RunEntry entry;
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading uninstall run entry #" << i;
+			log_error << "error reading uninstall run entry #" << i;
 		}
 		
 		print(cout, entry, header);
@@ -859,7 +803,7 @@ int main(int argc, char * argv[]) {
 		is->exceptions(std::ios_base::goodbit);
 		char dummy;
 		if(!is->get(dummy).eof()) {
-			LogWarning << "expected end of stream";
+			log_warning << "expected end of stream";
 		}
 	}
 	
@@ -867,7 +811,7 @@ int main(int argc, char * argv[]) {
 	
 	is.reset(BlockReader::get(ifs, version));
 	if(!is) {
-		LogError << "error reading block";
+		log_error << "error reading block";
 		return 1;
 	}
 	
@@ -883,7 +827,7 @@ int main(int argc, char * argv[]) {
 		FileLocationEntry & entry = locations[i];
 		entry.load(*is, version);
 		if(is->fail()) {
-			LogError << "error reading file location entry #" << i;
+			log_error << "error reading file location entry #" << i;
 		}
 		
 		cout << " - " << "File location #" << i << ':' << endl;
@@ -927,7 +871,7 @@ int main(int argc, char * argv[]) {
 		is->exceptions(std::ios_base::goodbit);
 		char dummy;
 		if(!is->get(dummy).eof()) {
-			LogWarning << "expected end of stream";
+			log_warning << "expected end of stream";
 		}
 	}
 	
@@ -975,7 +919,7 @@ int main(int argc, char * argv[]) {
 		std::sort(chunk.second.begin(), chunk.second.end(), FileLocationComparer(locations));
 		
 		if(!slice_reader->seek(chunk.first.firstSlice, chunk.first.chunkOffset)) {
-			LogError << "error seeking" << std::endl;
+			log_error << "error seeking";
 			return 1;
 		}
 		
@@ -983,7 +927,7 @@ int main(int argc, char * argv[]) {
 		
 		char magic[4];
 		if(slice_reader->read(magic, 4) != 4 || memcmp(magic, chunkId, 4)) {
-			LogError << "bad chunk id";
+			log_error << "bad chunk id";
 			return 1;
 		}
 		
@@ -997,7 +941,7 @@ int main(int argc, char * argv[]) {
 				case SetupHeader::BZip2: chunk_source.push(io::bzip2_decompressor(), 8192); break;
 				case SetupHeader::LZMA1: chunk_source.push(inno_lzma1_decompressor(), 8192); break;
 				case SetupHeader::LZMA2: chunk_source.push(inno_lzma2_decompressor(), 8192); break;
-				default: LogError << "unknown compression";
+				default: log_error << "unknown compression";
 			}
 		}
 		
@@ -1010,11 +954,12 @@ int main(int argc, char * argv[]) {
 			const FileLocationEntry & location = locations[location_i];
 			
 			if(location.fileOffset < offset) {
-				LogError << "bad offset";
+				log_error << "bad offset";
 				return 1;
 			}
 			
 			if(location.fileOffset > offset) {
+				std::cout << "discarding " << print_bytes(location.fileOffset - offset) << std::endl;
 				discard(chunk_source, location.fileOffset - offset);
 			}
 			offset = location.fileOffset + location.fileSize;
@@ -1115,30 +1060,30 @@ int main(int argc, char * argv[]) {
 			Checksum actual;
 			hasher.finalize(actual);
 			if(actual != location.checksum) {
-				LogWarning << "checksum mismatch:";
-				LogWarning << "actual:   " << actual;
-				LogWarning << "expected: " << location.checksum;
+				log_warning << "checksum mismatch:";
+				log_warning << "actual:   " << actual;
+				log_warning << "expected: " << location.checksum;
 			}
 		}
 	}
 	
 	} catch(io::bzip2_error e) {
-		LogError << e.what() << ": " <<
+		log_error << e.what() << ": " <<
 		e.error();
 	}
 	
 	std::cout << color::green << "Done" << color::reset << std::dec;
 	
-	if(total_errors || total_warnings) {
+	if(logger::total_errors || logger::total_warnings) {
 		std::cout << " with ";
-		if(total_errors) {
-			std::cout << color::red << total_errors << " errors" << color::reset;
+		if(logger::total_errors) {
+			std::cout << color::red << logger::total_errors << " errors" << color::reset;
 		}
-		if(total_errors && total_warnings) {
+		if(logger::total_errors && logger::total_warnings) {
 			std::cout << " and ";
 		}
-		if(total_warnings) {
-			std::cout << color::yellow << total_warnings << " warnings" << color::reset;
+		if(logger::total_warnings) {
+			std::cout << color::yellow << logger::total_warnings << " warnings" << color::reset;
 		}
 	}
 	
diff --git a/src/configure.hpp.in b/src/configure.hpp.in
new file mode 100644
index 0000000..eae275d
--- /dev/null
+++ b/src/configure.hpp.in
@@ -0,0 +1,8 @@
+
+#ifndef INNOEXTRACT_CONFIGURE_HPP
+#define INNOEXTRACT_CONFIGURE_HPP
+
+#cmakedefine HAVE_ISATTY
+#cmakedefine HAVE_IOCTL
+
+#endif // INNOEXTRACT_CONFIGURE_HPP
diff --git a/src/loader/SetupLoader.cpp b/src/loader/SetupLoader.cpp
index d865a39..fe80975 100644
--- a/src/loader/SetupLoader.cpp
+++ b/src/loader/SetupLoader.cpp
@@ -9,8 +9,8 @@
 #include "crypto/CRC32.hpp"
 #include "loader/ExeReader.hpp"
 #include "setup/Version.hpp"
-#include "util/color.hpp"
 #include "util/load.hpp"
+#include "util/log.hpp"
 
 namespace {
 
@@ -147,7 +147,7 @@ bool SetupLoader::loadOffsetsAt(std::istream & is, uint32_t pos) {
 			return false;
 		}
 		if(checksum.finalize() != expected) {
-			LogError << "[loader] CRC32 mismatch";
+			log_error << "[loader] CRC32 mismatch";
 			return false;
 		}
 	}
diff --git a/src/setup/FileEntry.cpp b/src/setup/FileEntry.cpp
index b64b78d..30902ff 100644
--- a/src/setup/FileEntry.cpp
+++ b/src/setup/FileEntry.cpp
@@ -2,6 +2,7 @@
 #include "setup/FileEntry.hpp"
 
 #include "util/load.hpp"
+#include "util/log.hpp"
 #include "util/storedenum.hpp"
 
 namespace {
@@ -161,7 +162,7 @@ void FileEntry::load(std::istream & is, const InnoVersion & version) {
 		// TODO find out where this byte comes from
 		int byte = is.get();
 		if(byte) {
-			LogWarning << "unknown byte: " << byte;
+			log_warning << "[file] unknown byte: " << byte;
 		}
 	}
 	
diff --git a/src/setup/FileLocationEntry.cpp b/src/setup/FileLocationEntry.cpp
index f47bebe..304beca 100644
--- a/src/setup/FileLocationEntry.cpp
+++ b/src/setup/FileLocationEntry.cpp
@@ -1,8 +1,8 @@
 
 #include "setup/FileLocationEntry.hpp"
 
-#include "util/color.hpp"
 #include "util/load.hpp"
+#include "util/log.hpp"
 #include "util/storedenum.hpp"
 
 void FileLocationEntry::load(std::istream & is, const InnoVersion & version) {
@@ -11,9 +11,11 @@ void FileLocationEntry::load(std::istream & is, const InnoVersion & version) {
 	lastSlice = load_number<uint32_t>(is, version.bits);
 	if(version < INNO_VERSION(4, 0, 0)) {
 		if(firstSlice < 1 || lastSlice < 1) {
-			LogWarning << "unexpected disk number: " << firstSlice << " / " << lastSlice;
+			log_warning << "[file location] unexpected disk number: " << firstSlice << " / "
+			            << lastSlice;
+		} else {
+			firstSlice--, lastSlice--;
 		}
-		firstSlice--, lastSlice--;
 	}
 	
 	chunkOffset = load_number<uint32_t>(is);
@@ -58,7 +60,7 @@ void FileLocationEntry::load(std::istream & is, const InnoVersion & version) {
 		
 		static const int64_t FILETIME_OFFSET = 0x19DB1DED53E8000l;
 		if(filetime < FILETIME_OFFSET) {
-			LogWarning << "unexpected filetime: " << filetime;
+			log_warning << "[file location] unexpected filetime: " << filetime;
 		}
 		filetime -= FILETIME_OFFSET;
 		
diff --git a/src/setup/SetupHeader.cpp b/src/setup/SetupHeader.cpp
index 27468a9..3931a40 100644
--- a/src/setup/SetupHeader.cpp
+++ b/src/setup/SetupHeader.cpp
@@ -422,7 +422,6 @@ void SetupHeader::load(std::istream & is, const InnoVersion & version) {
 	flags.add(Password);
 	flags.add(AllowRootDirectory);
 	flags.add(DisableFinishedPage);
-	
 	if(version.bits != 16) {
 		if(version < INNO_VERSION(3, 0, 4)) {
 			flags.add(AdminPrivilegesRequired);
@@ -435,7 +434,6 @@ void SetupHeader::load(std::istream & is, const InnoVersion & version) {
 		}
 		flags.add(ChangesAssociations);
 	}
-	
 	if(version >= INNO_VERSION(1, 3, 21)) {
 		if(version < INNO_VERSION(5, 3, 8)) {
 			flags.add(CreateUninstallRegKey);
@@ -445,7 +443,6 @@ void SetupHeader::load(std::istream & is, const InnoVersion & version) {
 		flags.add(UsePreviousGroup);
 		flags.add(UpdateUninstallLogAppName);
 	}
-	
 	if(version >= INNO_VERSION(2, 0, 0)) {
 		flags.add(UsePreviousSetupType);
 		flags.add(DisableReadyMemo);
@@ -455,37 +452,29 @@ void SetupHeader::load(std::istream & is, const InnoVersion & version) {
 		flags.add(UsePreviousTasks);
 		flags.add(DisableReadyPage);
 	}
-	
 	if(version >= INNO_VERSION(2, 0, 7)) {
 		flags.add(AlwaysShowDirOnReadyPage);
 		flags.add(AlwaysShowGroupOnReadyPage);
 	}
-	
 	if(version >= INNO_VERSION(2, 0, 17) && version < INNO_VERSION(4, 1, 5)) {
 		flags.add(BzipUsed);
 	}
-	
 	if(version >= INNO_VERSION(2, 0, 18)) {
 		flags.add(AllowUNCPath);
 	}
-	
 	if(version >= INNO_VERSION(3, 0, 0)) {
 		flags.add(UserInfoPage);
 		flags.add(UsePreviousUserInfo);
 	}
-	
 	if(version >= INNO_VERSION(3, 0, 1)) {
 		flags.add(UninstallRestartComputer);
 	}
-	
 	if(version >= INNO_VERSION(3, 0, 3)) {
 		flags.add(RestartIfNeededByRun);
 	}
-	
 	if(version >= INNO_VERSION_EXT(3, 0, 6, 1)) {
 		flags.add(ShowTasksTreeLines);
 	}
-	
 	if(version >= INNO_VERSION(4, 0, 0) && version < INNO_VERSION(4, 0, 10)) {
 		flags.add(ShowLanguageDialog);
 	}
@@ -493,46 +482,36 @@ void SetupHeader::load(std::istream & is, const InnoVersion & version) {
 	if(version >= INNO_VERSION(4, 0, 1) && version < INNO_VERSION(4, 0, 10)) {
 		flags.add(DetectLanguageUsingLocale);
 	}
-	
 	if(version >= INNO_VERSION(4, 0, 9)) {
 		flags.add(AllowCancelDuringInstall);
 	} else {
 		options |= AllowCancelDuringInstall;
 	}
-	
 	if(version >= INNO_VERSION(4, 1, 3)) {
 		flags.add(WizardImageStretch);
 	}
-	
 	if(version >= INNO_VERSION(4, 1, 8)) {
 		flags.add(AppendDefaultDirName);
 		flags.add(AppendDefaultGroupName);
 	}
-	
 	if(version >= INNO_VERSION(4, 2, 2)) {
 		flags.add(EncryptionUsed);
 	}
-	
 	if(version >= INNO_VERSION(5, 0, 4)) {
 		flags.add(ChangesEnvironment);
 	}
-	
 	if(version >= INNO_VERSION(5, 1, 7) && !version.unicode) {
 		flags.add(ShowUndisplayableLanguages);
 	}
-	
 	if(version >= INNO_VERSION(5, 1, 13)) {
 		flags.add(SetupLogging);
 	}
-	
 	if(version >= INNO_VERSION(5, 2, 1)) {
 		flags.add(SignedUninstaller);
 	}
-	
 	if(version >= INNO_VERSION(5, 3, 8)) {
 		flags.add(UsePreviousLanguage);
 	}
-	
 	if(version >= INNO_VERSION(5, 3, 9)) {
 		flags.add(DisableWelcomePage);
 	}
diff --git a/src/stream/BlockReader.cpp b/src/stream/BlockReader.cpp
index d12a217..c7e2ad9 100644
--- a/src/stream/BlockReader.cpp
+++ b/src/stream/BlockReader.cpp
@@ -14,11 +14,9 @@
 #include "stream/LzmaFilter.hpp"
 #include "util/enum.hpp"
 #include "util/load.hpp"
+#include "util/log.hpp"
 #include "util/util.hpp"
 
-using std::cout;
-using std::endl;
-
 namespace io = boost::iostreams;
 
 namespace {
@@ -65,11 +63,11 @@ std::istream * BlockReader::get(std::istream & base, const InnoVersion & version
 	}
 	
 	if(actualCrc.finalize() != expectedCrc) {
-		LogError << "block CRC32 mismatch";
+		log_error << "block CRC32 mismatch";
 		return NULL;
 	}
 	
-	cout << "[block] size: " << storedSize << "  compression: " << compression << endl;
+	debug("[block] size: " << storedSize << "  compression: " << compression);
 	
 	io::filtering_istream * fis;
 	fis = new io::filtering_istream;
diff --git a/src/stream/SliceReader.cpp b/src/stream/SliceReader.cpp
index 57a2304..7774c84 100644
--- a/src/stream/SliceReader.cpp
+++ b/src/stream/SliceReader.cpp
@@ -6,8 +6,9 @@
 #include <cstring>
 #include <limits>
 
-#include "util/color.hpp"
+#include "util/console.hpp"
 #include "util/load.hpp"
+#include "util/log.hpp"
 #include "util/util.hpp"
 
 using std::string;
@@ -45,7 +46,7 @@ bool SliceReader::seek(size_t slice) {
 	}
 	
 	if(dataOffset != 0) {
-		LogError << "[slice] cannot change slices in single-file setup";
+		log_error << "[slice] cannot change slices in single-file setup";
 		return false;
 	}
 	
@@ -54,7 +55,7 @@ bool SliceReader::seek(size_t slice) {
 
 bool SliceReader::openFile(const std::string & file) {
 	
-	std::cout << color::cyan << "\33[2K\r[slice] opening " << file << color::reset << std::endl;
+	log_info << "[slice] opening " << file;
 	
 	ifs.close();
 	
@@ -69,7 +70,7 @@ bool SliceReader::openFile(const std::string & file) {
 	char magic[8];
 	if(ifs.read(magic, 8).fail()) {
 		ifs.close();
-		LogError << "[slice] error reading magic number";
+		log_error << "[slice] error reading magic number";
 		return false;
 	}
 	bool found = false;
@@ -80,14 +81,14 @@ bool SliceReader::openFile(const std::string & file) {
 		}
 	}
 	if(!found) {
-		LogError << "[slice] bad magic number";
+		log_error << "[slice] bad magic number";
 		ifs.close();
 		return false;
 	}
 	
 	sliceSize = load_number<uint32_t>(ifs);
 	if(ifs.fail() || std::streampos(sliceSize) > fileSize) {
-		LogError << "[slice] bad slice size: " << sliceSize << " > " << fileSize;
+		log_error << "[slice] bad slice size: " << sliceSize << " > " << fileSize;
 		ifs.close();
 		return false;
 	}
@@ -110,7 +111,7 @@ bool SliceReader::open(size_t slice, const std::string & file) {
 	ifs.close();
 	
 	if(slicesPerDisk == 0) {
-		LogError << "[slice] slices per disk must not be zero";
+		log_error << "[slice] slices per disk must not be zero";
 		return false;
 	}
 	
diff --git a/src/util/color.cpp b/src/util/color.cpp
deleted file mode 100644
index d68fd14..0000000
--- a/src/util/color.cpp
+++ /dev/null
@@ -1,11 +0,0 @@
-
-#include "util/color.hpp"
-
-namespace color {
-
-shell_command current = color::reset;
-
-}
-
-size_t total_warnings = 0;
-size_t total_errors = 0;
diff --git a/src/util/color.hpp b/src/util/color.hpp
deleted file mode 100644
index ba03932..0000000
--- a/src/util/color.hpp
+++ /dev/null
@@ -1,69 +0,0 @@
-
-#ifndef INNOEXTRACT_UTIL_COLOR_HPP
-#define INNOEXTRACT_UTIL_COLOR_HPP
-
-#include <iostream>
-#include <iomanip>
-
-namespace color {
-	
-	struct shell_command {
-		
-		int c0;
-		int c1;
-		
-	};
-	
-	const shell_command reset = { 0, 0 };
-	
-	const shell_command black = { 1, 30 };
-	const shell_command red = { 1, 31 };
-	const shell_command green = { 1, 32 };
-	const shell_command yellow = { 1, 33 };
-	const shell_command blue = { 1, 34 };
-	const shell_command magenta = { 1, 35 };
-	const shell_command cyan = { 1, 36 };
-	const shell_command white = { 1, 37 };
-	
-	const shell_command dim_black = { 0, 30 };
-	const shell_command dim_red = { 0, 31 };
-	const shell_command dim_green = { 0, 32 };
-	const shell_command dim_yellow = { 0, 33 };
-	const shell_command dim_blue = { 0, 34 };
-	const shell_command dim_magenta = { 0, 35 };
-	const shell_command dim_cyan = { 0, 36 };
-	const shell_command dim_white = { 0, 37 };
-	
-	extern shell_command current;
-	
-} // namespace color
-
-inline std::ostream & operator<<(std::ostream & os, const color::shell_command command) {
-	color::current = command;
-	std::ios_base::fmtflags old = os.flags();
-	os << "\x1B[" << std::dec << command.c0 << ';' << command.c1 << 'm';
-	os.setf(old, std::ios_base::basefield);
-	return os;
-}
-
-struct error_base {
-	
-	color::shell_command previous;
-	
-	inline error_base(color::shell_command type) : previous(color::current) {
-		std::cerr << type << "!! ";
-	}
-	
-	inline ~error_base() {
-		std::cerr << previous << std::endl;
-	}
-	
-};
-
-extern size_t total_warnings;
-extern size_t total_errors;
-
-#define LogError (error_base(color::red), total_errors++, std::cerr)
-#define LogWarning (error_base(color::yellow), total_warnings++, std::cerr)
-
-#endif // INNOEXTRACT_UTIL_COLOR_HPP
diff --git a/src/util/console.cpp b/src/util/console.cpp
new file mode 100644
index 0000000..14d9460
--- /dev/null
+++ b/src/util/console.cpp
@@ -0,0 +1,138 @@
+
+#include "util/console.hpp"
+
+#include <iostream>
+#include <cmath>
+
+#include "configure.hpp"
+
+#ifdef HAVE_ISATTY
+#include <unistd.h>
+#endif
+
+#ifdef HAVE_IOCTL
+#include <sys/ioctl.h>
+#endif
+
+static bool native_console = true;
+
+namespace color {
+
+shell_command reset = { "\x1b[0m" };
+
+shell_command black = { "\x1b[1;30m" };
+shell_command red = { "\x1b[1;31m" };
+shell_command green = { "\x1b[1;32m" };
+shell_command yellow = { "\x1b[1;33m" };
+shell_command blue = { "\x1b[1;34m" };
+shell_command magenta = { "\x1b[1;35m" };
+shell_command cyan = { "\x1b[1;36m" };
+shell_command white = { "\x1b[1;37m" };
+
+shell_command dim_black = { "\x1b[0;30m" };
+shell_command dim_red = { "\x1b[0;31m" };
+shell_command dim_green = { "\x1b[0;32m" };
+shell_command dim_yellow = { "\x1b[0;33m" };
+shell_command dim_blue = { "\x1b[0;34m" };
+shell_command dim_magenta = { "\x1b[0;35m" };
+shell_command dim_cyan = { "\x1b[0;36m" };
+shell_command dim_white = { "\x1b[0;37m" };
+
+shell_command current = reset;
+
+void init() {
+	
+#ifdef HAVE_ISATTY
+	if(isatty(1) && isatty(2)) {
+		return;
+	}
+#endif
+	
+	native_console = false;
+	
+	reset.command = "";
+	
+	black.command = "";
+	red.command = "";
+	green.command = "";
+	yellow.command = "";
+	blue.command = "";
+	magenta.command = "";
+	cyan.command = "";
+	white.command = "";
+	
+	dim_black.command = "";
+	dim_red.command = "";
+	dim_green.command = "";
+	dim_yellow.command = "";
+	dim_blue.command = "";
+	dim_magenta.command = "";
+	dim_cyan.command = "";
+	dim_white.command = "";
+	
+	current = reset;
+	
+}
+
+}
+
+namespace progress {
+
+void show(float value, const std::string & label) {
+	
+	if(!native_console) {
+		return;
+	}
+	
+#if defined(HAVE_IOCTL) && defined(TIOCGWINSZ)
+	
+	struct winsize w;
+	ioctl(0, TIOCGWINSZ, &w);
+	
+	clear();
+	
+	std::ios_base::fmtflags flags = std::cout.flags();
+	
+	size_t progress_length = w.ws_col - label.length() - 6 - 2 - 2 - 1;
+	
+	if(progress_length > 10) {
+		
+		size_t progress = size_t(std::ceil(float(progress_length) * value));
+		
+		std::cout << '[';
+		for(size_t i = 0; i < progress; i++) {
+			std::cout << '=';
+		}
+		std::cout << '>';
+		for(size_t i = progress; i < progress_length; i++) {
+			std::cout << ' ';
+		}
+		std::cout << ']';
+		
+	}
+	
+	std::cout << std::right << std::fixed << std::setprecision(1) << std::setfill(' ')
+						<< std::setw(5) << (value * 100) << "% " << label;
+	std::cout.flush();
+	
+	std::cout.flags(flags);
+	
+#endif
+	
+}
+
+void clear() {
+	
+	if(!native_console) {
+		return;
+	}
+	
+#ifdef HAVE_IOCTL
+	
+	std::cout << "\33[2K\r";
+	
+#endif
+	
+}
+
+} // namespace progress
diff --git a/src/util/console.hpp b/src/util/console.hpp
new file mode 100644
index 0000000..113c107
--- /dev/null
+++ b/src/util/console.hpp
@@ -0,0 +1,53 @@
+
+#ifndef INNOEXTRACT_UTIL_CONSOLE_HPP
+#define INNOEXTRACT_UTIL_CONSOLE_HPP
+
+#include <ostream>
+#include <iomanip>
+
+namespace color {
+
+struct shell_command {
+	const char * command;
+};
+
+extern shell_command reset;
+
+extern shell_command black;
+extern shell_command red;
+extern shell_command green;
+extern shell_command yellow;
+extern shell_command blue;
+extern shell_command magenta;
+extern shell_command cyan;
+extern shell_command white;
+
+extern shell_command dim_black;
+extern shell_command dim_red;
+extern shell_command dim_green;
+extern shell_command dim_yellow;
+extern shell_command dim_blue;
+extern shell_command dim_magenta;
+extern shell_command dim_cyan;
+extern shell_command dim_white;
+
+extern shell_command current;
+
+void init();
+
+} // namespace color
+
+inline std::ostream & operator<<(std::ostream & os, const color::shell_command command) {
+	color::current = command;
+	return os << command.command;
+}
+
+namespace progress {
+
+void show(float value, const std::string & label);
+
+void clear();
+
+} // namespace
+
+#endif // INNOEXTRACT_UTIL_CONSOLE_HPP
diff --git a/src/util/enum.hpp b/src/util/enum.hpp
index e875992..de4372b 100644
--- a/src/util/enum.hpp
+++ b/src/util/enum.hpp
@@ -5,7 +5,7 @@
 #include <ostream>
 #include <boost/utility/enable_if.hpp>
 
-#include "util/color.hpp"
+#include "util/console.hpp"
 #include "util/flags.hpp"
 #include "util/util.hpp"
 
diff --git a/src/util/load.cpp b/src/util/load.cpp
index 85484ce..bd0e1ff 100644
--- a/src/util/load.cpp
+++ b/src/util/load.cpp
@@ -8,7 +8,7 @@
 #include <iconv.h>
 #include <errno.h>
 
-#include "util/color.hpp"
+#include "util/log.hpp"
 
 namespace {
 
@@ -79,7 +79,7 @@ void to_utf8(const std::string & from, std::string & to, uint32_t codepage) {
 		
 		size_t ret = iconv(converter, const_cast<char**>(&inbuf), &insize, &outbuf, &outsize);
 		if(ret == size_t(-1) && errno != E2BIG) {
-			LogError << "iconv error while converting from CP" << codepage << ": " << errno;
+			log_error << "iconv error while converting from CP" << codepage << ": " << errno;
 			to.clear();
 			return;
 		}
diff --git a/src/util/load.hpp b/src/util/load.hpp
index 7d30105..b759263 100644
--- a/src/util/load.hpp
+++ b/src/util/load.hpp
@@ -1,6 +1,6 @@
 
-#ifndef INNOEXTRACT_UTIL_LOADINGUTILS_HPP
-#define INNOEXTRACT_UTIL_LOADINGUTILS_HPP
+#ifndef INNOEXTRACT_UTIL_LOAD_HPP
+#define INNOEXTRACT_UTIL_LOAD_HPP
 
 #include <stdint.h>
 #include <cstring>
@@ -9,6 +9,7 @@
 
 #include "util/endian.hpp"
 #include "util/types.hpp"
+#include "util/util.hpp"
 
 struct binary_string {
 	
@@ -77,4 +78,14 @@ T load_number(std::istream & is, size_t bits) {
 	}
 }
 
-#endif // INNOEXTRACT_UTIL_LOADINGUTILS_HPP
+template <class T>
+void discard(T & is, uint64_t bytes) {
+	char buf[1024];
+	while(bytes) {
+		std::streamsize n = std::streamsize(std::min<uint64_t>(bytes, ARRAY_SIZE(buf)));
+		is.read(buf, n);
+		bytes -= uint64_t(n);
+	}
+}
+
+#endif // INNOEXTRACT_UTIL_LOAD_HPP
diff --git a/src/util/log.cpp b/src/util/log.cpp
new file mode 100644
index 0000000..e4df4d6
--- /dev/null
+++ b/src/util/log.cpp
@@ -0,0 +1,26 @@
+
+#include "util/log.hpp"
+
+#include <iostream>
+
+#include "util/console.hpp"
+
+bool logger::debug = false;
+
+size_t logger::total_errors = 0;
+size_t logger::total_warnings = 0;
+
+logger::~logger() {
+	
+	color::shell_command previous = color::current;
+	progress::clear();
+	
+	switch(level) {
+		case Debug:   std::cout << color::cyan   << buffer.str() << std::endl; break;
+		case Info:    std::cout << color::white  << buffer.str() << std::endl; break;
+		case Warning: std::cerr << color::yellow << buffer.str() << std::endl; break;
+		case Error:   std::cerr << color::red    << buffer.str() << std::endl; break;
+	}
+	
+	std::cout << previous;
+}
diff --git a/src/util/log.hpp b/src/util/log.hpp
new file mode 100644
index 0000000..b16a966
--- /dev/null
+++ b/src/util/log.hpp
@@ -0,0 +1,71 @@
+
+#ifndef INNOEXTRACT_UTIL_LOG_HPP
+#define INNOEXTRACT_UTIL_LOG_HPP
+
+#include <sstream>
+#include <string>
+
+#ifdef _DEBUG
+#define debug(...)    \
+	if(::logger::debug) \
+		::logger(__FILE__, __LINE__, ::logger::Debug) << __VA_ARGS__
+#define log_info    ::logger(__FILE__, __LINE__, ::logger::Info)
+#define log_warning ::logger(__FILE__, __LINE__, ::logger::Warning)
+#define log_error   ::logger(__FILE__, __LINE__, ::logger::Error)
+#else
+#define debug(...)
+#define log_info    ::logger(::logger::Info)
+#define log_warning ::logger(::logger::Warning)
+#define log_error   ::logger(::logger::Error)
+#endif
+
+/*!
+ * logger class that allows longging via the stream operator.
+ */
+class logger {
+	
+public:
+	
+	enum log_level {
+		Debug,
+		Info,
+		Warning,
+		Error
+	};
+	
+private:
+	
+#ifdef _DEBUG
+	const char * const file;
+	const int line;
+#endif
+	
+	const log_level level;
+	
+	std::ostringstream buffer; //! Buffer for the log message excluding level, file and line.
+	
+public:
+	
+	static size_t total_warnings;
+	static size_t total_errors;
+	
+	static bool debug;
+	
+#ifdef _DEBUG
+	inline logger(const char * _file, int _line, log_level _level)
+		: file(_file), line(_line), level(_level) { }
+#else
+	inline logger(log_level _level) : level(_level) { }
+#endif
+	
+	template<class T>
+	inline logger & operator<<(const T & i) {
+		buffer << i;
+		return *this;
+	}
+	
+	~logger();
+	
+};
+
+#endif // INNOEXTRACT_UTIL_LOG_HPP
diff --git a/src/util/output.hpp b/src/util/output.hpp
index 5f87296..15f9b4b 100644
--- a/src/util/output.hpp
+++ b/src/util/output.hpp
@@ -6,7 +6,7 @@
 #include <iostream>
 #include <string>
 
-#include "util/color.hpp"
+#include "util/console.hpp"
 #include "util/util.hpp"
 
 struct quoted {
diff --git a/src/util/storedenum.hpp b/src/util/storedenum.hpp
new file mode 100644
index 0000000..3780325
--- /dev/null
+++ b/src/util/storedenum.hpp
@@ -0,0 +1,213 @@
+
+#ifndef INNOEXTRACT_UTIL_STOREDENUM_HPP
+#define INNOEXTRACT_UTIL_STOREDENUM_HPP
+
+#include <stdint.h>
+#include <stddef.h>
+#include <vector>
+
+#include <boost/utility/enable_if.hpp>
+#include <boost/static_assert.hpp>
+
+#include "util/load.hpp"
+#include "util/enum.hpp"
+#include "util/load.hpp"
+#include "util/log.hpp"
+#include "util/util.hpp"
+
+template <class Enum>
+struct enum_value_map {
+	
+	typedef Enum enum_type;
+	typedef Enum flag_type;
+	
+};
+
+#define STORED_ENUM_MAP(MapName, Default, ...) \
+struct MapName : public enum_value_map<typeof(Default)> { \
+	static const flag_type default_value; \
+	static const flag_type values[]; \
+	static const size_t count; \
+}; \
+const MapName::flag_type MapName::default_value = Default; \
+const MapName::flag_type MapName::values[] = { __VA_ARGS__ }; \
+const size_t MapName::count = ARRAY_SIZE(MapName::values)
+
+#define STORED_FLAGS_MAP(MapName, Flag0, ...) \
+	STORED_ENUM_MAP(MapName, Flag0, Flag0, ## __VA_ARGS__)
+
+template <class Mapping>
+struct stored_enum {
+	
+	size_t value;
+	
+public:
+	
+	typedef Mapping mapping_type;
+	typedef typename Mapping::enum_type enum_type;
+	
+	static const size_t size = Mapping::count;
+	
+	inline stored_enum(std::istream & is) {
+		 // TODO use larger types for larger enums
+		BOOST_STATIC_ASSERT(size <= (1 << 8));
+		value = load_number<uint8_t>(is);
+	}
+	
+	enum_type get() {
+		
+		if(value < size) {
+			return Mapping::values[value];
+		}
+		
+		log_warning << "warning: unexpected " << enum_names<enum_type>::name << " value: " << value;
+		
+		return Mapping::default_value;
+	}
+	
+};
+
+template <size_t Bits>
+class stored_bitfield {
+	
+	typedef uint8_t base_type;
+	
+	static const size_t base_size = sizeof(base_type) * 8;
+	static const size_t count = (Bits + (base_size - 1)) / base_size; // ceildiv
+	
+	base_type bits[count];
+	
+public:
+	
+	static const size_t size = Bits;
+	
+	inline stored_bitfield(std::istream & is) {
+		for(size_t i = 0; i < count; i++) {
+			bits[i] = load_number<base_type>(is);
+		}
+	}
+	
+	inline uint64_t lower_bits() const {
+		
+		BOOST_STATIC_ASSERT(sizeof(uint64_t) % sizeof(base_type) == 0);
+		
+		uint64_t result = 0;
+		
+		for(size_t i = 0; i < std::min(sizeof(uint64_t) / sizeof(base_type), size_t(count)); i++) {
+			result |= (uint64_t(bits[i]) << (i * base_size));
+		}
+		
+		return result;
+	}
+	
+	inline operator std::bitset<size>() const {
+		
+		// Make `make style` shut up since we really need unsigned long here.
+		#define stored_enum_concat_(a, b, c, d) a##b c##d
+		typedef stored_enum_concat_(unsi, gned, lo, ng) ulong_type;
+		#undef stored_enum_concat_
+		
+		static const size_t ulong_size = sizeof(ulong_type) * 8;
+		
+		BOOST_STATIC_ASSERT(base_size % ulong_size == 0 || base_size < ulong_size);
+		
+		std::bitset<size> result(0);
+		for(size_t i = 0; i < count; i++) {
+			for(size_t j = 0; j < ceildiv(base_size, ulong_size); j++) {
+				result |= std::bitset<size>(static_cast<ulong_type>(bits[i] >> (j * ulong_size)))
+				          << ((i * base_size) + (j * ulong_size));
+			}
+		}
+		return result;
+	}
+	
+};
+
+template <class Mapping>
+class stored_flags : private stored_bitfield<Mapping::count> {
+	
+public:
+	
+	typedef Mapping mapping_type;
+	typedef typename Mapping::enum_type enum_type;
+	typedef flags<enum_type> flag_type;
+	
+	inline stored_flags(std::istream & is) : stored_bitfield<Mapping::count>(is) { }
+	
+	flag_type get() {
+		
+		uint64_t bits = this->lower_bits();
+		flag_type result = 0;
+		
+		for(size_t i = 0; i < this->size; i++) {
+			if(bits & (uint64_t(1) << i)) {
+				result |= Mapping::values[i];
+				bits &= ~(uint64_t(1) << i);
+			}
+		}
+		
+		if(bits) {
+			log_warning << "unexpected " << enum_names<enum_type>::name << " flags: "
+			            << std::hex << bits << std::dec;
+		}
+		
+		return result;
+	}
+	
+};
+
+template <class Enum>
+class stored_flag_reader {
+	
+public:
+	
+	typedef Enum enum_type;
+	typedef flags<enum_type> flag_type;
+	
+	std::istream & is;
+	
+	typedef uint8_t stored_type;
+	static const size_t stored_bits = sizeof(stored_type) * 8;
+	
+	size_t pos;
+	stored_type buffer;
+	
+	flag_type result;
+	
+	size_t bits;
+	
+	explicit stored_flag_reader(std::istream & _is) : is(_is), pos(0), result(0), bits(0) { }
+	
+	void add(enum_type flag) {
+		
+		if(pos == 0) {
+			buffer = load_number<stored_type>(is);
+		}
+		
+		if(buffer & (stored_type(1) << pos)) {
+			result |= flag;
+		}
+		
+		pos = (pos + 1) % stored_bits;
+		
+		bits++;
+	}
+	
+	operator flag_type() const {
+		return result;
+	}
+	
+};
+
+template <class Enum>
+class stored_flag_reader<flags<Enum> > : public stored_flag_reader<Enum> {
+	
+public:
+	
+	explicit stored_flag_reader(std::istream & is) : stored_flag_reader<Enum>(is) { }
+	
+};
+
+typedef stored_bitfield<256> stored_char_set;
+
+#endif // INNOEXTRACT_UTIL_STOREDENUM_HPP
diff --git a/src/util/util.hpp b/src/util/util.hpp
index 495e015..7dd9d95 100644
--- a/src/util/util.hpp
+++ b/src/util/util.hpp
@@ -1,6 +1,6 @@
 
-#ifndef INNOEXTRACT_UTIL_ARRAY_HPP
-#define INNOEXTRACT_UTIL_ARRAY_HPP
+#ifndef INNOEXTRACT_UTIL_UTIL_HPP
+#define INNOEXTRACT_UTIL_UTIL_HPP
 
 #define ARRAY_SIZE(array) (sizeof(array)/sizeof(*(array)))
 
@@ -63,4 +63,4 @@ inline T safe_left_shift(T value) {
 	return detail::safe_shifter<(bits >= (8 * sizeof(T)))>::left_shift(value, bits);
 }
 
-#endif // INNOEXTRACT_UTIL_ARRAY_HPP
+#endif // INNOEXTRACT_UTIL_UTIL_HPP