Update precompiled pdfium for mac to chromium/3071 and add version info file with minimal build instructions

compressed_archive/unarr/README.txt

@@ -0,0 +1,6 @@
+To use unarr as a decompression engine when building YACReader, download https://github.com/zeniko/unarr/archive/master.zip and extract it in this folder.
+This will build unarr as a part of YACReader (static build).
+
+If you're on a Linux/Unix system and prefer to use unarr as a shared library, have a look at https://github.com/selmf/unarr/
+This fork of unarr includes a CMake based build system that allows you to build and install unarr as a shared library. YACReader will detect and use 
+the installed library at build time if it is installed.

compressed_archive/unarr/compressed_archive.cpp

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+#include "compressed_archive.h"
+
+#include <QFileInfo>
+#include <QDebug>
+
+#include "extract_delegate.h"
+
+extern"C" {
+#include <unarr.h>
+}
+
+CompressedArchive::CompressedArchive(const QString & filePath, QObject *parent) :
+    QObject(parent),valid(false),tools(true),numFiles(0),ar(NULL),stream(NULL)
+{
+	//open file
+	stream = ar_open_file(filePath.toStdString().c_str());
+	if (!stream)
+	{
+		return;
+	}
+	
+	//open archive
+	ar = ar_open_rar_archive(stream);
+	//TODO: build unarr with 7z support and test this!
+	//if (!ar) ar = ar_open_7z_archive(stream);
+	if (!ar) ar = ar_open_tar_archive(stream);
+	//zip detection is costly, so it comes last...
+	if (!ar) ar = ar_open_zip_archive(stream, false);
+	if (!ar)
+	{
+		return;
+	}
+	
+	//initial parse
+	while (ar_parse_entry(ar)) 
+	{
+		//make sure we really got a file header
+		if (ar_entry_get_size(ar) > 0)
+		{
+			fileNames.append(ar_entry_get_name(ar));
+			offsets.append(ar_entry_get_offset(ar));
+			numFiles++;
+		}
+	}
+	if (!ar_at_eof(ar))
+	{	
+		//fail if the initial parse didn't reach EOF
+		//this might be a bit too drastic
+		qDebug() << "Error while parsing archive";
+		return;
+	}
+	if (numFiles > 0)
+	{
+		valid = true;
+	}
+}
+
+CompressedArchive::~CompressedArchive()
+{
+	ar_close_archive(ar);
+	ar_close(stream);
+}
+
+QList<QString> CompressedArchive::getFileNames()
+{
+	return fileNames;
+}
+
+bool CompressedArchive::isValid()
+{
+	return valid;
+}
+
+bool CompressedArchive::toolsLoaded()
+{
+	//for backwards compatibilty
+	return tools;
+}
+
+int CompressedArchive::getNumFiles()
+{
+	return numFiles;
+}
+
+void CompressedArchive::getAllData(const QVector<quint32> & indexes, ExtractDelegate * delegate)
+{
+	if (indexes.isEmpty())	
+		return;
+	
+	QByteArray buffer;
+	
+	int i=0;
+	while (i < indexes.count())
+	{
+		//use the offset list so we generated so we're not getting any non-page files
+		ar_parse_entry_at(ar, offsets.at(indexes.at(i))); //set ar_entry to start of indexes
+		buffer.resize(ar_entry_get_size(ar));
+		if (ar_entry_uncompress(ar, buffer.data(), buffer.size())) //did we extract it?
+		{
+			delegate->fileExtracted(indexes.at(i), buffer); //return extracted file
+		}
+		else
+		{
+			delegate->crcError(indexes.at(i)); 	//we could not extract it...
+		}								
+		i++;
+	}
+}
+
+QByteArray CompressedArchive::getRawDataAtIndex(int index)
+{
+	QByteArray buffer;
+	if(index >= 0 && index < getNumFiles())
+	{
+		ar_parse_entry_at(ar, offsets.at(index));
+		buffer.resize(ar_entry_get_size(ar));
+		if(ar_entry_uncompress(ar, buffer.data(), buffer.size()))
+		{
+			return buffer;
+		}
+		else
+		{
+			return QByteArray();
+		}
+	}
+    return buffer;
+}

compressed_archive/unarr/compressed_archive.h

@@ -0,0 +1,37 @@
+#ifndef COMPRESSED_ARCHIVE_H
+#define COMPRESSED_ARCHIVE_H
+
+#include <QObject>
+#include "extract_delegate.h"
+extern"C" {
+#include <unarr.h>
+}
+
+class CompressedArchive : public QObject
+{
+	Q_OBJECT
+public:
+	explicit CompressedArchive(const QString & filePath, QObject *parent = 0);
+	~CompressedArchive();
+
+signals:
+	
+public slots:
+	int getNumFiles();
+	void getAllData(const QVector<quint32> & indexes, ExtractDelegate * delegate=0);
+	QByteArray getRawDataAtIndex(int index);
+	QList<QString> getFileNames();
+	bool isValid();
+	bool toolsLoaded();
+private:
+
+	bool tools;
+	bool valid;
+	QList<QString> fileNames;
+	int numFiles;
+	ar_archive *ar;
+	ar_stream *stream;
+	QList<qint64> offsets;
+};
+
+#endif // COMPRESSED_ARCHIVE_H

compressed_archive/unarr/extract_delegate.h

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+#ifndef EXTRACT_DELEGATE_H
+#define EXTRACT_DELEGATE_H
+
+#include <QByteArray>
+
+class ExtractDelegate
+{
+	public:
+		virtual void fileExtracted(int index, const QByteArray & rawData) = 0;
+		virtual void crcError(int index) = 0;
+		virtual void unknownError(int index) = 0;
+};
+
+#endif //EXTRACT_DELEGATE_H

compressed_archive/unarr/unarr-wrapper.pri

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+INCLUDEPATH += $$PWD
+DEPENDPATH += $$PWD
+
+HEADERS += $$PWD/extract_delegate.h \
+			$$PWD/compressed_archive.h \
+
+SOURCES += $$PWD/compressed_archive.cpp \
+
+unix:!macx:exists (/usr/include/unarr.h) {
+		message(Using system provided unarr installation)
+		LIBS+=-lunarr
+		DEFINES+=use_unarr
+		}
+else:macx:exists (../../dependencies/unarr/macx/libunarr.a) {
+		message(Found prebuilt unarr library in dependencies directory.)
+		INCLUDEPATH += $$PWD/../../dependencies/unarr/macx
+		LIBS += -L$$PWD/../../dependencies/unarr/macx -lunarr -lz -lbz2
+		DEFINES+=use_unarr
+		}
+
+else:win32:exists (../../dependencies/unarr/win/unarr.h) {
+		message(Found prebuilt unarr library in dependencies directory.)
+		INCLUDEPATH += $$PWD/../../dependencies/unarr/win
+		LIBS += -L../../dependencies/unarr/win/ -lunarr
+		DEFINES+=use_unarr
+		}
+
+else:exists ($$PWD/unarr-master) {
+		message(Found unarr source-code)
+		message(Unarr will be build as a part of YACReader)
+		
+		#qmake based unarr build system
+		#this should only be used for testing or as a last resort
+		include(unarr.pro)
+		DEFINES+=use_unarr
+		}
+	else {
+		error(Missing dependency: unarr decrompression backend. Please install libunarr on your system\
+		or provide a copy of the unarr source code in compressed_archive/unarr/unarr-master)
+		}

compressed_archive/unarr/unarr.pro

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+INCLUDEPATH += $$PWD/unarr-master/
+DEPENDPATH += $$PWD/unarr-master/
+
+unix:QMAKE_CFLAGS_RELEASE -= "-O2"
+unix:QMAKE_CFLAGS_RELEASE += "-O3"
+unix:QMAKE_CFLAGS_RELEASE += "-DNDEBUG"
+unix:QMAKE_CFLAGS += "-D_FILE_OFFSET_BITS=64"
+
+win32:QMAKE_CFLAGS_RELEASE += "/DNDEBUG"
+
+HEADERS+=$$PWD/unarr-master/common/allocator.h\
+		 $$PWD/unarr-master/common/unarr-imp.h\
+		 $$PWD/unarr-master/lzmasdk/7zTypes.h\
+		 $$PWD/unarr-master/lzmasdk/CpuArch.h\
+		 $$PWD/unarr-master/lzmasdk/Ppmd7.h\
+		 $$PWD/unarr-master/lzmasdk/Ppmd.h\
+		 $$PWD/unarr-master/lzmasdk/LzmaDec.h\
+		 $$PWD/unarr-master/lzmasdk/Ppmd8.h\
+		 $$PWD/unarr-master/tar/tar.h\
+		 $$PWD/unarr-master/_7z/_7z.h\
+		 $$PWD/unarr-master/unarr.h
+
+SOURCES+=$$PWD/unarr-master/common/conv.c\
+		$$PWD/unarr-master/common/custalloc.c\
+		$$PWD/unarr-master/common/unarr.c\
+		$$PWD/unarr-master/common/crc32.c\
+		$$PWD/unarr-master/common/stream.c\
+		$$PWD/unarr-master/lzmasdk/CpuArch.c\
+		$$PWD/unarr-master/lzmasdk/Ppmd7.c\
+		$$PWD/unarr-master/lzmasdk/Ppmd8.c\
+		$$PWD/unarr-master/lzmasdk/LzmaDec.c\
+		$$PWD/unarr-master/lzmasdk/Ppmd7Dec.c\
+		$$PWD/unarr-master/lzmasdk/Ppmd8Dec.c\
+		$$PWD/unarr-master/zip/inflate.c\
+		$$PWD/unarr-master/zip/parse-zip.c\
+		$$PWD/unarr-master/zip/uncompress-zip.c\
+		$$PWD/unarr-master/zip/zip.c\
+		$$PWD/unarr-master/rar/filter-rar.c\
+		$$PWD/unarr-master/rar/parse-rar.c\
+		$$PWD/unarr-master/rar/rarvm.c\
+		$$PWD/unarr-master/rar/huffman-rar.c\
+		$$PWD/unarr-master/rar/rar.c\
+		$$PWD/unarr-master/rar/uncompress-rar.c\
+		$$PWD/unarr-master/tar/parse-tar.c\
+		$$PWD/unarr-master/tar/tar.c\
+		$$PWD/unarr-master/_7z/_7z.c