* merge of the debian-expermental-ma branch

  
* debian/control:
  - add dependency on zlib-dev for libapt-pkg-dev
* apt-pkg/cacheset.cc:
  - [ABI BREAK] add an ErrorType option to CacheSetHelper
* cmdline/apt-cache.cc:
  - use Notice instead of Error in the CacheSetHelper messages
    for compat reasons. Otherwise tools like sbuild blow up
  - return success in show if a virtual package was given
* debian/control:
  - remove libcurl3-gnutls-dev alternative as the package is gone
  - increase needed version of libcurl4-gnutls-dev to >= 7.19.0
    as we use CURLOPT_{ISSUERCERT,CRLFILE} (Closes: #589642)
* apt-pkg/deb/dpkgpm.cc:
  - Write architecture information to history file.
  - Add to history whether a change was automatic or not.
* apt-pkg/contrib/fileutl.cc:
  - Add FileFd::OpenDescriptor() (needed for python-apt's #383617).
* cmdline/apt-get.cc:
  - Support large filesystems by using statvfs64() instead of statvfs()
    and statfs64() instead of statfs() (Closes: #590513).
* apt-pkg/cdrom.cc:
  - Use link() instead of rename() for creating the CD database backup;
    otherwise there would be a short time without any database.
* apt-pkg/depcache.cc:
  - handle "circular" conflicts for "all" packages correctly
* cmdline/apt-cache.cc:
  - be able to omit dependency types in (r)depends (Closes: #319006)
  - show in (r)depends the canidate per default instead of newest
  - share the (r)depends code instead of codecopy
* apt-pkg/cacheset.cc:
  - move them back to the library as they look stable now
  - add a 'newest' pseudo target release as in pkg/newest
* apt-pkg/pkgcache.cc:
  - prefer non-virtual packages in FindPreferredPkg (Closes: #590041)
* test/integration/*:
  - add with bug#590041 testcase a small test "framework"
* apt-pkg/orderlist.cc:
  - try to install another or-group member in DepRemove before
    breaking the or group (Closes: #590438)
  - configure also the replacement before remove by adding Immediate flag

* apt-pkg/contrib/error.{cc,h}
  - docstring cleanup
  - add inline DumpError() to avoid subtle API break
* apt-pkg/contrib/error.{cc,h}:
  - remove constness of va_list parameter to fix build on amd64 and co
    Thanks Eric Valette! (Closes: #588610)
* apt-pkg/deb/debmetaindex.cc:
  - do not query each architecture for flat file archives
  - fix typo preventing display of architecture in Info()
* methods/bzip2.cc:
  - add a copycat of the old gzip.cc as we need it for bzip2 and lzma
* debian/rules:
  - Make DEB_BUILD_OPTIONS=noopt actually work by passing the right
    CXXFLAGS.
* apt-pkg/contrib/fileutl.{h,cc}:
  - Add support for reading of gzipped files with the new "ReadOnlyGzip"
    OpenMode. (Closes: #188407)
  - Link against zlib (in apt-pkg/makefile) and add zlib build dependency.
  - [ABI BREAK] This adds a new private member to FileFd, but its
    initialization is in the public header file.
* configure.in:
  - Check for zlib library and headers.
* apt-pkg/acquire-item.cc, apt-pkg/deb/debindexfile.cc,
  apt-pkg/deb/debrecords.cc, apt-pkg/deb/debsrcrecords.h,
  cmdline/apt-cache.cc:
  - Open Packages, Sources, and Translations indexes in "ReadOnlyGzip" mode.
* apt-pkg/deb/debindexfile.cc:
  - If we do not find uncompressed package/source/translation indexes, look
    for gzip compressed ones.
* apt-pkg/acquire-item.cc:
  - If the Acquire::GzipIndexes option is true and we download a gzipped
    index file, keep it as it is (and rename to .gz) instead of
    uncompressing it.
* doc/apt.conf.5.xml:
  - Document the new Acquire::GzipIndexes option.
* doc/po/apt-doc.pot, doc/po/de.po:
  - German translation of new Acquire::GzipIndexes option.
* Add test/test-indexes.sh:
  - Test behaviour of index retrieval and usage, in particular with
    uncompressed and gzip compressed indexes.
* methods/gzip.cc: With FileFd now being able to read gzipped files, there
  is no need for the gzip method any more to spawn an external gzip process.
  Rewrite it to use FileFd directly, which makes the code a lot simpler, and
  also using less memory and overhead.
* doc/apt.conf.5.xml:
  - add and document APT::Cache-{Start,Grow,Limit} options for mmap control
* apt-pkg/contrib/fileutl.cc:
  - do not fail von double close()
* cmdline/cacheset.cc:
  - doesn't include it in the library for now as it is too volatile
  - get the candidate either from an already built depcache
    or use the policy which is a bit faster than depcache generation
  - get packages by task^ with FromTask()
  - only print errors if all tries to get a package by string failed
  - factor out code to get a single package FromName()
  - check in Grouped* first without modifier interpretation
* cmdline/apt-get.cc:
  - use the cachsets in the install commands
  - make the specify order of packages irrelevant (Closes: #196021)
* apt-pkg/orderlist.cc:
  - untouched packages are never missing
* apt-pkg/packagemanager.cc:
  - packages that are not touched doesn't need to be unpacked
* debian/control:
  - remove intltool's dependency as it is an ubuntu artefact
* apt-pkg/depcache.cc:
  - SetCandidateVer for all pseudo packages
  - SetReInstall for the "all" package of a pseudo package
  - use the new MatchAgainstConfig for the DefaultRootSetFunc
  - always mark the all package if a pseudo package is marked for install
* apt-pkg/contrib/error.{cc,h}:
  - complete rewrite but use the same API
  - add NOTICE and DEBUG as new types of a message
  - add a simple stack handling to be able to delay error handling
* apt-pkg/aptconfiguration.cc:
  - show a deprecation notice for APT::Acquire::Translation
* apt-pkg/contrib/configuration.{cc,h}:
  - add a wrapper to match strings against configurable regex patterns
* apt-pkg/contrib/fileutl.cc:
  - show notice about ignored file instead of being always silent
  - add a Dir::Ignore-Files-Silently list option to control the notice
* apt-pkg/policy.h:
  - add another round of const& madness as the previous round accidentally
    NOT overrides the virtual GetCandidateVer() method (Closes: #587725)
* apt-pkg/pkgcachegen.{cc,h}:
  - make the used MMap moveable (and therefore dynamic resizeable) by
    applying (some) mad pointer magic (Closes: #195018)
* apt-pkg/deb/dpkgpm.cc:
  - make the apt/term.log output unbuffered (thanks to Matt Zimmerman)
* methods/ftp.h:
  - Handle different logins on the same server (Closes: #586904).
* apt-pkg/deb/deblistparser.cc:
  - Handle architecture wildcards (Closes: #547724).
* apt-pkg/versionmatch.cc:
  - Support matching pins by regular expressions or glob() like patterns,
    regular expressions have to be put between to slashes; for example,
    /.*/.
* apt-pkg/contrib/fileutl.cc:
  - Make FileFd replace files atomically in WriteTemp mode (for cache, etc).
* debian/control:
  - Set Standards-Version to 3.9.0
* apt-pkg/cachefile.h:
  - make pkgPolicy public again, libapt-pkg-perl (and probably
    others) get unhappy without that
* merge the remaining Ubuntu change:
  - on gpg verification failure warn and restore the last known
    good state
  - on failure display the IP of the server (useful for servers
    that use round robin DNS)
  - support Original-Maintainer in RewritePackageOrder
  - enable cdrom autodetection via libudev by default
  - show message about Vcs in use when apt-get source is run for
    packages maintained in a Vcs
  - better support transitional packages with mark auto-installed. 
    when the transitional package is in "oldlibs" the new package
    is not marked auto installed (same is true for section
    metapackages)
  - provide new "deb mirror://archive.foo/mirrors.list sid main"
    method expects a list of mirrors (generated on the server e.g.
    via geoip) and will use that, including cycle on failure
  - write apport crash file on package failure (disabled by default
    on debian until apport is available)
  - support mirror failure reporting (disabled by default on debian)

* apt-pkg/deb/dpkgpm.cc:
  - write Disappeared also to the history.log
  - forward manual-installed bit on package disappearance
* apt-pkg/deb/debsystem.cc:
  - add better config item for extended_states file
* apt-pkg/pkgcache.h:
  - switch {,Install-}Size to unsigned long long
* apt-pkg/depcache.cc:
  - do the autoremove mark process also for required packages to handle
    these illegally depending on lower priority packages (Closes: #583517)
  - try harder to find the other pseudo versions for autoremove multiarch
  - correct "Dangerous iterator usage" pointed out by cppcheck
  - deal with long long, not with int to remove 2GB Limit (LP: #250909)
  - deprecate AddSize with Multiplier as it is unused and switch to
    boolean instead to handle the sizes more gracefully.
  - switch i{Download,Usr}Size from double to (un)signed long long
* apt-pkg/aptconfiguration.cc:
  - remove duplicate architectures in getArchitectures()
* apt-pkg/indexrecords.{cc,h}:
  - backport forgotten Valid-Until patch from the obsolete experimental
    branch to prevent replay attacks better, thanks to Thomas Viehmann
    for the initial patch! (Closes: #499897)
  - add a constant Exists check for MetaKeys
* apt-pkg/acquire-item.cc:
  - do not try PDiff if it is not listed in the Meta file
  - sent Last-Modified header also for Translation files
* apt-pkg/cacheiterator.h:
  - let pkgCache::Iterator inherent std::iterator
* ftparchive/writer.h:
  - add a virtual destructor to FTWScanner class (for cppcheck)
* apt-pkg/cacheset.{cc,h}:
  - add simple wrapper around std::set for cache structures
  - move regex magic from apt-get to new FromRegEx method
  - move cmdline parsing from apt-cache to new FromCommandLine method
  - support special release-modifier 'installed' and 'candidate'
* apt-pkg/contrib/cmdline.cc:
  - fix segfault in SaveInConfig caused by writing over char[] sizes
* apt-pkg/pkgcache.cc:
  - get the best matching arch package from a group with FindPreferredPkg
* cmdline/apt-cache.cc:
  - make the search multiarch compatible by using GrpIterator instead
  - use pkgCacheFile and the new CacheSets all over the place
  - add --target-release option (Closes: #115520)
  - accept pkg/release and pkg=version in show and co. (Closes: #236270)
  - accept package versions in the unmet command
* cmdline/apt-get.cc:
  - use unsigned long long instead of double to store values it gets
* apt-pkg/cachefile.{cc,h}:
  - split Open() into submethods to be able to build only parts
  - make the OpProgress optional in the Cache buildprocess
  - store also the SourceList we use internally for export
* doc/apt.conf.5.xml:
  - document the new Valid-Until related options
* apt-pkg/contrib/strutl.cc:
  - split StrToTime() into HTTP1.1 and FTP date parser methods and
    use strptime() instead of some self-made scanf mangling
  - use the portable timegm shown in his manpage instead of a strange
    looking code copycat from wget
* ftparchive/writer.cc:
  - add ValidTime option to generate a Valid-Until header in Release file
* apt-pkg/policy.cc:
  - get the candidate right for a not-installed pseudo package if
    his non-pseudo friend is installed
* apt-pkg/indexcopy.cc:
  - move the gpg codecopy to a new method and use it also in methods/gpgv.cc
* cmdline/apt-get.cc:
  - rerun dpkg-source in source if --fix-broken is given (Closes: #576752)
  - don't suggest held packages as they are installed (Closes: #578135)
  - handle multiple --{tar,diff,dsc}-only options correctly
  - show at the end of the install process a list of disappeared packages
* cmdline/apt-cache.cc:
  - use GroupCount for package names in stats and add a package struct line
* methods/rred.cc:
  - use the patchfile modification time instead of the one from the
    "old" file - thanks to Philipp Weis for noticing! (Closes: #571541)
* debian/rules:
  - remove targets referring to CVS or arch as they are useless
  - use $(CURDIR) instead of $(pwd)
  - use dpkg-buildflags if available for CXXFLAGS
* README.arch:
  - remove the file completely as it has no use nowadays
* apt-pkg/depcache.cc:
  - be doublesure that the killer query is empty before starting reinstall
* methods/gpgv.cc:
  - remove the keyrings count limit by using vector magic
* contrib/mmap.cc:
  - clarify "MMap reached size limit" error message, thanks Ivan Masár!
* doc/apt.ent
  - add entities for the current oldstable/stable/testing codenames
* doc/sources.list.5.xml:
  - use stable-codename instead of stable in the examples (Closes: #531492)
* doc/apt_preferences.5.xml:
  - adapt some examples here to use current codenames as well
  - add "NotAutomatic: yes" handling, thanks Osamu Aoki (Closes: #490347)
* debian/libapt-pkg-doc.doc-base.cache:
  - remove yet another reference to the removed cache.sgml
* doc/apt-get.8.xml:
  - do not say explicit target_release_{name,version,codename}, it should
    be clear by itself and 'man' can break lines again (Closes: #566166)
  - remove the gnome-apt reference as it is removed from unstable
* apt-pkg/deb/dpkgpm.cc:
  - add 'disappear' to the known processing states, thanks Jonathan Nieder
* apt-pkg/packagemanager.h:
  - export info about disappeared packages with GetDisappearedPackages()
* methods/http.{cc,h}:
  - code cleanup, use enums instead of magic ints

* debian/rules:
  - spell out some less known options to reduce manpage consultation-rate
  - Use POSIX command substitution: $(<command sequence>)
  - Remove EOL whitespace (Closes: #577804)
* apt-pkg/acquire-item.cc:
  - Fix pkgAcqFile::Custom600Headers() to always return something.

* apt-pkg/depcache.cc:
  - rewrite the pseudo package reinstaller to be more intelligent
    in his package choices
* apt-pkg/packagemanager.cc:
  - don't try to "unpack" pseudo packages twice
* apt-pkg/contrib/fileutl.cc:
  - add a parent-guarded "mkdir -p" as CreateDirectory()
* apt-pkg/acquire.{cc,h}:
  - add a delayed constructor with Setup() for success reporting
  - check for and create directories in Setup if needed instead of
    error out unfriendly in the Constructor (Closes: #523920, #525783)
  - optional handle a lock file in Setup()
* apt-pkg/acquire-item.cc:
  - Acquire::ForceHash to force method for expected hash
* cmdline/apt-get.cc:
  - remove the lock file handling and let Acquire take care of it instead
  - display MD5Sum in --print-uris if not forced to use another method
    instead of displaying the strongest available (Closes: #576420)
  - regex for package names executed on Grp- not PkgIterator
  - show non-candidates as fallback for virtual packages (Closes: #578385)
  - set also "all" to this version for pseudo packages in TryToChangeVer
* apt-pkg/deb/dpkgpm.cc:
  - remove Chroot-Directory from files passed to install commands.
    Thanks to Kel Modderman for report & patch! (Closes: #577226)
* ftparchive/writer.cc:
  - remove 999 chars Files and Checksums rewrite limit (Closes: #577759)
* cmdline/apt-cache.cc:
  - align Installed and Candidate Version in policy so they can be compared
    easier, thanks Ralf Gesellensetter for the pointer! (Closes: #578657)
* doc/apt.ent:
  - Add a note about APT_CONFIG in the -c description (Closes: #578267)
* doc/po/de.po:
  - correct typos in german apt_preferences manpage, thanks Chris Leick!
* apt-pkg/sourcelist.cc:
  - be less strict and accept [option=value] as well
* apt-pkg/contrib/configuration.cc:
  - error out if #clear directive has no argument
* doc/files.sgml:
  - sync documentation with status quo, regarding files/directories in
    use, extended_states and uri schemes.
* doc/cache.sgml:
  - drop the file in favor of inplace documentation with doxygen
* apt-pkg/pkgcache.h:
  - enhance the Groups ABI by providing a ID as the other structs does
  - check also the size of the Group struct then checking for the others
* cmdline/apt-get.cc:
  - replace backticks with single quotes around fix-broken command
    in the broken packages message. (Closes: #577168)
* dselect/install:
  - modernize if-statements not to use 'x' (Closes: #577117)
  - replace backticks with POSIX $() (Closes: #577116)
* cmdline/apt-get.cc:
  - fix crash when pkg.VersionList() is empty
  - install html doxygen in libapt-pkg-doc 
* debian/control:
  - build-depend on doxygen
* apt-pkg/contrib/weakptr.h:
  - add a class WeakPointable which allows one to register weak pointers to
    an object which will be set to NULL when the object is deallocated.
* [ABI break] apt-pkg/acquire{-worker,-item,}.h:
  - subclass pkgAcquire::{Worker,Item,ItemDesc} from WeakPointable.
* apt-pkg/pkgcache.cc:
  - Merge fix from David to correct handling in single-arch environments.
* cmdline/apt-cache.cc:
  - Add a showauto command to apt-cache.
* cmdline/apt-get.cc:
  - Add apt-get markauto and unmarkauto commands.
* [BREAK] merge MultiArch-ABI. We don't support MultiArch,
  but we support the usage of the new ABI so libapt users
  can start to prepare for MultiArch (Closes: #536029)
* Ignore :qualifiers after package name in build dependencies
  in the library by default, but try to honour them in apt-get
  as we have some sort of MultiArch support ready (Closes: #558103)
* add translation of the manpages to PT (portuguese)
  Thanks to Américo Monteiro!
* Switch to dpkg-source 3.0 (native) format
* apt-pkg/depcache.cc:
  - remove Auto-Installed information from extended_states
    together with the package itself (Closes: #572364)
* cmdline/apt-mark:
  - don't crash if no arguments are given (Closes: #570962)
* debian/control:
  - remove some years old and obsolete Replaces
  - add automake/conf build-depends/conflicts as recommend by
    the autotools-dev README (Closes: #572615)
* apt-pkg/contrib/mmap.{h,cc}:
  - add char[] fallback for filesystems without shared writable
    mmap() like JFFS2. Thanks to Marius Vollmer for writing
    and to Loïc Minier for pointing to the patch! (Closes: #314334)
* doc/apt_preferences.5.xml:
  - fix two typos and be more verbose in the novice warning.
    Thanks to Osamu Aoki for pointing it out! (Closes: #567669)
  - fix a=sid vs. n=sid typo, thanks Ansgar Burchardt!
  - origin can be used to match a hostname (Closes: #352667)
  - remove wrong pin-priority is optional remark (Closes: #574944)
* apt-pkg/deb/dpkgpm.cc:
  - fix error message construction in OpenLog()
  - if available store the Commandline in the history
* cmdline/apt-get.cc:
  - add a --only-upgrade flag to install command (Closes: #572259)
  - fix memory leaks in error conditions in DoSource()
  - try version match in FindSrc first exact than fuzzy (LP: #551178)
* apt-pkg/contrib/cmndline.cc:
  - save Commandline in Commandline::AsString for logging
* apt-pkg/deb/debversion.cc:
  - consider absent of debian revision equivalent to 0 (Closes: #573592)
* doc/makefile, doc/*:
  - generate subdirectories for building the manpages in on the fly
    depending on the po files we have.
* apt-pkg/pkgcachegen.cc:
  - merge versions correctly even if multiple different versions
    with the same version number are available.
    Thanks to Magnus Holmgren for the patch! (Closes: #351056)
* ftparchive/writer.cc:
  - write LongDescriptions if they shouldn't be included in Packages
    file into i18n/Translation-en by default.
* doc/po/de.po:
  - correct a few typos in the german manpage translation.
    Thanks to Chris Leick and Georg Koppen! (Closes: #574962)
* apt-pkg/contrib/strutl.cc:
  - convert all toupper calls to tolower_ascii for a little speedup
* apt-pkg/contrib/strutl.cc:
  - always escape '%' (LP: #130289) (Closes: #500560)
  - unescape '%' sequence only if followed by 2 hex digit
  - username/password are urlencoded in proxy string (RFC 3986)

1 files changed, 0 insertions, 824 deletions

diff --git a/doc/cache.sgml b/doc/cache.sgml
deleted file mode 100644
index aea5a45c3..000000000
--- a/doc/cache.sgml
+++ /dev/null
@@ -1,824 +0,0 @@
-<!-- -*- mode: sgml; mode: fold -*- -->
-<!doctype debiandoc  PUBLIC  "-//DebianDoc//DTD DebianDoc//EN">
-<book>
-<title>APT Cache File Format</title>
-
-<author>Jason Gunthorpe <email>jgg@debian.org</email></author>
-<version>$Id: cache.sgml,v 1.11 2003/02/12 15:05:44 doogie Exp $</version>
-
-<abstract>
-This document describes the complete implementation and format of the APT
-Cache file. The APT Cache file is a way for APT to parse and store a 
-large number of package files for display in the UI. It's primary design 
-goal is to make display of a single package in the tree very fast by 
-pre-linking important things like dependencies and provides.
-
-The specification doubles as documentation for one of the in-memory 
-structures used by the package library and the APT GUI.
-
-</abstract>
-
-<copyright>
-Copyright &copy; Jason Gunthorpe, 1997-1998.
-<p>
-APT and this document are free software; you can redistribute them and/or
-modify them under the terms of the GNU General Public License as published
-by the Free Software Foundation; either version 2 of the License, or (at your
-option) any later version.
-
-<p>
-For more details, on Debian GNU/Linux systems, see the file
-/usr/share/common-licenses/GPL for the full license.
-</copyright>
-
-<toc sect>
-
-<chapt>Introduction
-<!-- Purpose		                                               {{{ -->
-<!-- ===================================================================== -->
-<sect>Purpose
-
-<p>
-This document describes the implementation of an architecture
-dependent binary cache file. The goal of this cache file is two fold, 
-firstly to speed loading and processing of the package file array and
-secondly to reduce memory consumption of the package file array.
-
-<p>
-The implementation is aimed at an environment with many primary package
-files, for instance someone that has a Package file for their CD-ROM, a
-Package file for the latest version of the distribution on the CD-ROM and a
-package file for the development version. Always present is the information
-contained in the status file which might be considered a separate package
-file.
-
-<p>
-Please understand, this is designed as a -CACHE FILE- it is not meant to be
-used on any system other than the one it was created for. It is not meant to
-be authoritative either, i.e. if a system crash or software failure occurs it
-must be perfectly acceptable for the cache file to be in an inconsistent
-state. Furthermore at any time the cache file may be erased without losing
-any information.
-
-<p>
-Also the structures and storage layout is optimized for use by the APT
-GUI and may not be suitable for all purposes. However it should be possible 
-to extend it with associate cache files that contain other information.
-
-<p>
-To keep memory use down the cache file only contains often used fields and
-fields that are inexpensive to store, the Package file has a full list of
-fields. Also the client may assume that all items are perfectly valid and
-need not perform checks against their correctness. Removal of information
-from the cache is possible, but blanks will be left in the file, and
-unused strings will also be present. The recommended implementation is to
-simply rebuild the cache each time any of the data files change. It is
-possible to add a new package file to the cache without any negative side
-effects.
-
-<sect1>Note on Pointer access
-<p>
-Every item in every structure is stored as the index to that structure.
-What this means is that once the files is mmaped every data access has to
-go through a fixup stage to get a real memory pointer. This is done
-by taking the index, multiplying it by the type size and then adding
-it to the start address of the memory block. This sounds complex, but
-in C it is a single array dereference. Because all items are aligned to 
-their size and indexes are stored as multiples of the size of the structure
-the format is immediately portable to all possible architectures - BUT the
-generated files are -NOT-.
-
-<p>
-This scheme allows code like this to be written:
-<example>
-  void *Map = mmap(...);
-  Package *PkgList = (Package *)Map;
-  Header *Head = (Header *)Map;
-  char *Strings = (char *)Map;
-  cout << (Strings + PkgList[Head->HashTable[0]]->Name) << endl;
-</example>
-<p>
-Notice the lack of casting or multiplication. The net result is to return
-the name of the first package in the first hash bucket, without error
-checks. 
-
-<p>
-The generator uses allocation pools to group similarly sized structures in
-large blocks to eliminate any alignment overhead. The generator also
-assures that no structures overlap and all indexes are unique. Although
-at first glance it may seem like there is the potential for two structures
-to exist at the same point the generator never allows this to happen.
-(See the discussion of free space pools)
-                                                                  <!-- }}} -->
-
-<chapt>Structures
-<!-- Header		                                               {{{ -->
-<!-- ===================================================================== -->
-<sect>Header
-<p>
-This is the first item in the file.
-<example>
-   struct Header
-   {
-      // Signature information
-      unsigned long Signature;
-      short MajorVersion;
-      short MinorVersion;
-      bool Dirty;
-       
-      // Size of structure values
-      unsigned short HeaderSz;
-      unsigned short PackageSz;
-      unsigned short PackageFileSz;
-      unsigned short VersionSz;
-      unsigned short DependencySz;
-      unsigned short ProvidesSz;
-      unsigned short VerFileSz;
-      
-      // Structure counts
-      unsigned long PackageCount;
-      unsigned long VersionCount;
-      unsigned long DependsCount;
-      unsigned long PackageFileCount;
-      
-      // Offsets
-      unsigned long FileList;              // PackageFile
-      unsigned long StringList;            // StringItem
-      unsigned long VerSysName;            // StringTable
-      unsigned long Architecture;          // StringTable
-      unsigned long MaxVerFileSize;
-      
-      // Allocation pools
-      struct
-      {
-         unsigned long ItemSize;
-	 unsigned long Start;
-	 unsigned long Count;
-      } Pools[7];
-
-      // Package name lookup
-      unsigned long HashTable[2*1024];        // Package
-   };
-</example>
-<taglist>
-<tag>Signature<item>
-This must contain the hex value 0x98FE76DC which is designed to verify
-that the system loading the image has the same byte order and byte size as
-the system saving the image
-
-<tag>MajorVersion
-<tag>MinorVersion<item>
-These contain the version of the cache file, currently 0.2.
-
-<tag>Dirty<item>
-Dirty is true if the cache file was opened for reading, the client expects
-to have written things to it and have not fully synced it. The file should
-be erased and rebuilt if it is true.
-
-<tag>HeaderSz
-<tag>PackageSz
-<tag>PackageFileSz
-<tag>VersionSz
-<tag>DependencySz
-<tag>VerFileSz
-<tag>ProvidesSz<item>
-*Sz contains the sizeof() that particular structure. It is used as an
-extra consistency check on the structure of the file.
-
-If any of the size values do not exactly match what the client expects then
-the client should refuse the load the file.
-
-<tag>PackageCount
-<tag>VersionCount
-<tag>DependsCount
-<tag>PackageFileCount<item>
-These indicate the number of each structure contained in the cache. 
-PackageCount is especially useful for generating user state structures. 
-See Package::Id for more info.
-
-<tag>VerSysName<item>
-String representing the version system used for this cache
-
-<tag>Architecture<item>
-Architecture the cache was built against.
-
-<tag>MaxVerFileSize<item>
-The maximum size of a raw entry from the original Package file 
-(i.e. VerFile::Size) is stored here.
-
-<tag>FileList<item>
-This contains the index of the first PackageFile structure. The PackageFile
-structures are singly linked lists that represent all package files that
-have been merged into the cache.
-
-<tag>StringList<item>
-This contains a list of all the unique strings (string item type strings) in 
-the cache. The parser reads this list into memory so it can match strings 
-against it.
-
-<tag>Pools<item>
-The Pool structures manage the allocation pools that the generator uses.
-Start indicates the first byte of the pool, Count is the number of objects
-remaining in the pool and ItemSize is the structure size (alignment factor)
-of the pool. An ItemSize of 0 indicates the pool is empty. There should be 
-the same number of pools as there are structure types. The generator 
-stores this information so future additions can make use of any unused pool 
-blocks.
-
-<tag>HashTable<item>
-HashTable is a hash table that provides indexing for all of the packages.
-Each package name is inserted into the hash table using the following has
-function:
-<example>
-   unsigned long Hash(string Str)
-   {
-      unsigned long Hash = 0;
-      for (const char *I = Str.begin(); I != Str.end(); I++)
-         Hash += *I * ((Str.end() - I + 1));
-      return Hash % _count(Head.HashTable);
-   }
-</example>
-<p>
-By iterating over each entry in the hash table it is possible to iterate over 
-the entire list of packages. Hash Collisions are handled with a singly linked
-list of packages based at the hash item. The linked list contains only 
-packages that match the hashing function.
-
-</taglist>
-                                                                  <!-- }}} -->
-<!-- Package		                                               {{{ -->
-<!-- ===================================================================== -->
-<sect>Package
-<p>
-This contains information for a single unique package. There can be any
-number of versions of a given package. Package exists in a singly
-linked list of package records starting at the hash index of the name in 
-the Header->HashTable.
-<example>
-   struct Pacakge
-   {
-      // Pointers
-      unsigned long Name;              // Stringtable
-      unsigned long VersionList;       // Version
-      unsigned long CurrentVer;        // Version
-      unsigned long Section;           // StringTable (StringItem)
-      
-      // Linked lists 
-      unsigned long NextPackage;       // Package
-      unsigned long RevDepends;        // Dependency
-      unsigned long ProvidesList;      // Provides
-       
-      // Install/Remove/Purge etc
-      unsigned char SelectedState;     // What
-      unsigned char InstState;         // Flags
-      unsigned char CurrentState;      // State
-
-      // Unique ID for this pkg
-      unsigned short ID;
-      unsigned long Flags;
-   };
-</example>   
-
-<taglist>
-<tag>Name<item>
-Name of the package.
-
-<tag>VersionList<item>
-Base of a singly linked list of version structures. Each structure 
-represents a unique version of the package. The version structures
-contain links into PackageFile and the original text file as well as
-detailed information about the size and dependencies of the specific
-package. In this way multiple versions of a package can be cleanly handled
-by the system. Furthermore, this linked list is guaranteed to be sorted
-from Highest version to lowest version with no duplicate entries.
-
-<tag>CurrentVer<item>
-CurrentVer is an index to the installed version, either can be
-0.
-
-<tag>Section<item>
-This indicates the deduced section. It should be "Unknown" or the section
-of the last parsed item.
-
-<tag>NextPackage<item>
-Next link in this hash item. This linked list is based at Header.HashTable
-and contains only packages with the same hash value.
-
-<tag>RevDepends<item>
-Reverse Depends is a linked list of all dependencies linked to this package.
-
-<tag>ProvidesList<item>
-This is a linked list of all provides for this package name.
-
-<tag>SelectedState
-<tag>InstState
-<tag>CurrentState<item>
-These correspond to the 3 items in the Status field found in the status
-file. See the section on defines for the possible values.
-<p>
-SelectedState is the state that the user wishes the package to be
-in.
-<p>
-InstState is the installation state of the package. This normally
-should be OK, but if the installation had an accident it may be otherwise.
-<p>
-CurrentState indicates if the package is installed, partially installed or
-not installed.
-
-<tag>ID<item>
-ID is a value from 0 to Header->PackageCount. It is a unique value assigned
-by the generator. This allows clients to create an array of size PackageCount
-and use it to store state information for the package map. For instance the
-status file emitter uses this to track which packages have been emitted 
-already.
-
-<tag>Flags<item>
-Flags are some useful indicators of the package's state. 
-
-</taglist>
-
-                                                                  <!-- }}} -->
-<!-- PackageFile	                                               {{{ -->
-<!-- ===================================================================== -->
-<sect>PackageFile
-<p>
-This contains information for a single package file. Package files are
-referenced by Version structures. This is a singly linked list based from
-Header.FileList
-<example>
-   struct PackageFile
-   {
-      // Names
-      unsigned long FileName;        // Stringtable
-      unsigned long Archive;         // Stringtable
-      unsigned long Component;       // Stringtable
-      unsigned long Version;         // Stringtable
-      unsigned long Origin;          // Stringtable
-      unsigned long Label;           // Stringtable
-      unsigned long Architecture;    // Stringtable
-      unsigned long Site;            // Stringtable
-      unsigned long IndexType;       // Stringtable
-      unsigned long Size;            
-
-      // Linked list
-      unsigned long NextFile;        // PackageFile
-      unsigned short ID;
-      unsigned long Flags;
-      time_t mtime;                  // Modification time
-   };
-</example>   
-<taglist>
-
-<tag>FileName<item>
-Refers the the physical disk file that this PacakgeFile represents.
-
-<tag>Archive
-<tag>Component
-<tag>Version
-<tag>Origin
-<tag>Label
-<tag>Architecture
-<tag>NotAutomatic<item>
-This is the release information. Please see the files document for a 
-description of what the release information means.
-
-<tag>Site<item>
-The site the index file was fetched from.
-
-<tag>IndexType<item>
-A string indicating what sort of index file this is.
-
-<tag>Size<item>
-Size is provided as a simple check to ensure that the package file has not
-been altered.
-
-<tag>ID<item>
-See Package::ID.
-
-<tag>Flags<item>
-Provides some flags for the PackageFile, see the section on defines.
-
-<tag>mtime<item>
-Modification time for the file at time of cache generation.
-
-</taglist>
-
-                                                                  <!-- }}} -->
-<!-- Version		                                               {{{ -->
-<!-- ===================================================================== -->
-<sect>Version
-<p>
-This contains the information for a single version of a package. This is a
-single linked list based from Package.Versionlist.
-
-<p>
-The version list is always sorted from highest version to lowest version by
-the generator. Also there may not be any duplicate entries in the list (same 
-VerStr).
-
-<example>
-   struct Version
-   {
-      unsigned long VerStr;            // Stringtable
-      unsigned long Section;           // StringTable (StringItem)
-      unsigned long Arch;              // StringTable
-      
-      // Lists
-      unsigned long FileList;          // VerFile
-      unsigned long NextVer;           // Version
-      unsigned long DependsList;       // Dependency
-      unsigned long ParentPkg;         // Package
-      unsigned long ProvidesList;      // Provides
-      
-      unsigned long Size;
-      unsigned long InstalledSize;
-      unsigned long Hash;
-      unsigned short ID;
-      unsigned char Priority;
-   };
-</example>
-<taglist>
-
-<tag>VerStr<item>
-This is the complete version string.
-
-<tag>FileList<item>
-References the all the PackageFile's that this version came out of. FileList 
-can be used to determine what distribution(s) the Version applies to. If 
-FileList is 0 then this is a blank version. The structure should also have 
-a 0 in all other fields excluding VerStr and Possibly NextVer.
-
-<tag>Section<item>
-This string indicates which section it is part of. The string should be
-contained in the StringItem list.
-
-<tag>Arch<item>
-Architecture the package was compiled for.
-
-<tag>NextVer<item>
-Next step in the linked list.
-
-<tag>DependsList<item>
-This is the base of the dependency list.
-
-<tag>ParentPkg<item>
-This links the version to the owning package, allowing reverse dependencies
-to determine the package.
-
-<tag>ProvidesList<item>
-Head of the linked list of Provides::NextPkgProv, forward provides.
-
-<tag>Size
-<tag>InstalledSize<item>
-The archive size for this version. For Debian this is the size of the .deb
-file. Installed size is the uncompressed size for this version
-
-<tag>Hash<item>
-This is a characteristic value representing this package. No two packages
-in existence should have the same VerStr and Hash with different contents.
-
-<tag>ID<item>
-See Package::ID.
-
-<tag>Priority<item>
-This is the parsed priority value of the package.
-</taglist>
-
-                                                                  <!-- }}} -->
-<!-- Dependency		                                               {{{ -->
-<!-- ===================================================================== -->
-<sect>Dependency
-<p>
-Dependency contains the information for a single dependency record. The records
-are split up like this to ease processing by the client. The base of list
-linked list is Version.DependsList. All forms of dependencies are recorded
-here including Conflicts, Breaks, Suggests and Recommends.
-
-<p>
-Multiple depends on the same package must be grouped together in 
-the Dependency lists. Clients should assume this is always true.
-
-<example>
-    struct Dependency
-    {
-       unsigned long Version;         // Stringtable
-       unsigned long Package;         // Package
-       unsigned long NextDepends;     // Dependency
-       unsigned long NextRevDepends;  // Reverse dependency linking
-       unsigned long ParentVer;       // Upwards parent version link
-       
-       // Specific types of depends
-       unsigned char Type;
-       unsigned char CompareOp;
-       unsigned short ID;
-    };
-</example>
-<taglist>
-<tag>Version<item>
-The string form of the version that the dependency is applied against.
-
-<tag>Package<item>
-The index of the package file this depends applies to. If the package file
-does not already exist when the dependency is inserted a blank one (no
-version records) should be created.
-
-<tag>NextDepends<item>
-Linked list based off a Version structure of all the dependencies in that
-version.
-
-<tag>NextRevDepends<item>
-Reverse dependency linking, based off a Package structure. This linked list
-is a list of all packages that have a depends line for a given package.
-
-<tag>ParentVer<item>
-Parent version linking, allows the reverse dependency list to link
-back to the version and package that the dependency are for.
-
-<tag>Type<item>
-Describes weather it is depends, predepends, recommends, suggests, etc.
-
-<tag>CompareOp<item>
-Describes the comparison operator specified on the depends line. If the high
-bit is set then it is a logical or with the previous record.
-
-<tag>ID<item>
-See Package::ID.
-
-</taglist>
-
-                                                                  <!-- }}} -->
-<!-- Provides		                                               {{{ -->
-<!-- ===================================================================== -->
-<sect>Provides
-<p>
-Provides handles virtual packages. When a Provides: line is encountered 
-a new provides record is added associating the package with a virtual 
-package name. The provides structures are linked off the package structures.
-This simplifies the analysis of dependencies and other aspects A provides 
-refers to a specific version of a specific package, not all versions need to 
-provide that provides.
-
-<p>
-There is a linked list of provided package names started from each 
-version that provides packages. This is the forwards provides mechanism.
-<example>
-    struct Provides
-    {
-       unsigned long ParentPkg;        // Package
-       unsigned long Version;          // Version
-       unsigned long ProvideVersion;   // Stringtable
-       unsigned long NextProvides;     // Provides
-       unsigned long NextPkgProv;      // Provides
-    };
-</example>
-<taglist>
-<tag>ParentPkg<item>
-The index of the package that head of this linked list is in. ParentPkg->Name
-is the name of the provides.
-
-<tag>Version<item>
-The index of the version this provide line applies to.
-
-<tag>ProvideVersion<item>
-Each provides can specify a version in the provides line. This version allows
-dependencies to depend on specific versions of a Provides, as well as allowing
-Provides to override existing packages. This is experimental.
-
-<tag>NextProvides<item>
-Next link in the singly linked list of provides (based off package)
-
-<tag>NextPkgProv<item>
-Next link in the singly linked list of provides for 'Version'.
-
-</taglist>
-
-                                                                  <!-- }}} -->
-<!-- VerFile		                                               {{{ -->
-<!-- ===================================================================== -->
-<sect>VerFile
-<p>
-VerFile associates a version with a PackageFile, this allows a full 
-description of all Versions in all files (and hence all sources) under
-consideration.
-
-<example>
-    struct pkgCache::VerFile
-    {
-       unsigned long File;           // PackageFile
-       unsigned long NextFile;       // PkgVerFile
-       unsigned long Offset;
-       unsigned short Size;
-    }
-</example>
-<taglist>
-<tag>File<item>
-The index of the package file that this version was found in.
-
-<tag>NextFile<item>
-The next step in the linked list.
-
-<tag>Offset
-<tag>Size<item>
-These describe the exact position in the package file for the section from 
-this version.
-</taglist>
-
-                                                                  <!-- }}} -->
-<!-- StringItem		                                               {{{ -->
-<!-- ===================================================================== -->
-<sect>StringItem
-<p>
-StringItem is used for generating single instances of strings. Some things
-like Section Name are are useful to have as unique tags. It is part of 
-a linked list based at Header::StringList.
-<example>
-   struct StringItem
-   {
-      unsigned long String;        // Stringtable
-      unsigned long NextItem;      // StringItem
-   };
-</example>
-<taglist>
-<tag>String<item>
-The string this refers to.
-
-<tag>NextItem<item>
-Next link in the chain.
-</taglist>
-                                                                  <!-- }}} -->
-<!-- StringTable	                                               {{{ -->
-<!-- ===================================================================== -->
-<sect>StringTable
-<p>
-All strings are simply inlined any place in the file that is natural for the
-writer. The client should make no assumptions about the positioning of
-strings. All stringtable values point to a byte offset from the start of the
-file that a null terminated string will begin.
-                                                                  <!-- }}} -->
-<!-- Defines		                                               {{{ -->
-<!-- ===================================================================== -->
-<sect>Defines
-<p>
-Several structures use variables to indicate things. Here is a list of all
-of them.
-
-<sect1>Definitions for Dependency::Type
-<p>
-<example>
-#define pkgDEP_Depends 1
-#define pkgDEP_PreDepends 2
-#define pkgDEP_Suggests 3
-#define pkgDEP_Recommends 4
-#define pkgDEP_Conflicts 5
-#define pkgDEP_Replaces 6
-#define pkgDEP_Breaks 8
-</example>
-</sect1>
-
-<sect1>Definitions for Dependency::CompareOp
-<p>
-<example>
-#define pkgOP_OR 0x10
-#define pkgOP_LESSEQ 0x1
-#define pkgOP_GREATEREQ 0x2
-#define pkgOP_LESS 0x3
-#define pkgOP_GREATER 0x4
-#define pkgOP_EQUALS 0x5
-</example>
-The lower 4 bits are used to indicate what operator is being specified and
-the upper 4 bits are flags. pkgOP_OR indicates that the next package is
-or'd with the current package.
-</sect1>
-
-<sect1>Definitions for Package::SelectedState
-<p>
-<example>
-#define pkgSTATE_Unkown 0
-#define pkgSTATE_Install 1
-#define pkgSTATE_Hold 2
-#define pkgSTATE_DeInstall 3
-#define pkgSTATE_Purge 4
-</example>
-</sect1>
-
-<sect1>Definitions for Package::InstState
-<p>
-<example>
-#define pkgSTATE_Ok 0
-#define pkgSTATE_ReInstReq 1
-#define pkgSTATE_Hold 2
-#define pkgSTATE_HoldReInstReq 3
-</example>
-</sect1>
-
-<sect1>Definitions for Package::CurrentState
-<p>
-<example>
-#define pkgSTATE_NotInstalled 0
-#define pkgSTATE_UnPacked 1
-#define pkgSTATE_HalfConfigured 2
-#define pkgSTATE_UnInstalled 3
-#define pkgSTATE_HalfInstalled 4
-#define pkgSTATE_ConfigFiles 5
-#define pkgSTATE_Installed 6
-#define pkgSTATE_TriggersAwaited 7
-#define pkgSTATE_TriggersPending 8
-</example>
-</sect1>
-
-<sect1>Definitions for Package::Flags
-<p>
-<example>
-#define pkgFLAG_Auto (1 << 0)
-#define pkgFLAG_New (1 << 1)
-#define pkgFLAG_Obsolete (1 << 2)
-#define pkgFLAG_Essential (1 << 3)
-#define pkgFLAG_ImmediateConf (1 << 4)
-</example>
-</sect1>
-
-<sect1>Definitions for Version::Priority
-<p>
-Zero is used for unparsable or absent Priority fields.
-<example>
-#define pkgPRIO_Important 1
-#define pkgPRIO_Required 2
-#define pkgPRIO_Standard 3
-#define pkgPRIO_Optional 4
-#define pkgPRIO_Extra 5
-</example>
-</sect1>
-
-<sect1>Definitions for PackageFile::Flags
-<p>
-<example>
-#define pkgFLAG_NotSource (1 << 0)
-#define pkgFLAG_NotAutomatic (1 << 1)
-</example>
-</sect1>
-
-                                                                  <!-- }}} -->
-
-<chapt>Notes on the Generator
-<!-- Notes on the Generator 	                                       {{{ -->
-<!-- ===================================================================== -->
-<p>
-The pkgCache::MergePackageFile function is currently the only generator of
-the cache file. It implements a conversion from the normal textual package
-file into the cache file.
-
-<p>
-The generator assumes any package declaration with a
-Status: line is a 'Status of the package' type of package declaration. 
-A Package with a Target-Version field should also really have a status field.
-The processing of a Target-Version field can create a place-holder Version
-structure that is empty to refer to the specified version (See Version
-for info on what a empty Version looks like). The Target-Version syntax
-allows the specification of a specific version and a target distribution. 
-
-<p>
-Different section names on different versions is supported, but I 
-do not expect to use it. To simplify the GUI it will merely use the section
-in the Package structure. This should be okay as I hope sections do not change
-much.
-
-<p>
-The generator goes through a number of post processing steps after producing
-a disk file. It sorts all of the version lists to be in descending order
-and then generates the reverse dependency lists for all of the packages.
-ID numbers and count values are also generated in the post processing step.
-
-<p>
-It is possible to extend many of the structures in the cache with extra data.
-This is done by using the ID member. ID will be a unique number from 0 to
-Header->??Count. For example
-<example>
-struct MyPkgData;
-MyPkgData *Data = new MyPkgData[Header->PackageCount];
-Data[Package->ID]->Item = 0;
-</example>
-This provides a one way reference between package structures and user data. To
-get a two way reference would require a member inside the MyPkgData structure.
-
-<p>
-The generators use of free space pools tend to make the package file quite
-large, and quite full of blank space. This could be fixed with sparse files.
-
-                                                                  <!-- }}} -->
-
-<chapt>Future Directions
-<!-- Future Directions		                                       {{{ -->
-<!-- ===================================================================== -->
-<p>
-Some good directions to take the cache file is into a cache directory that
-contains many associated caches that cache other important bits of
-information. (/var/cache/apt, FHS2) 
-
-<p>
-Caching of the info/*.list is an excellent place to start, by generating all
-the list files into a tree structure and reverse linking them to the package
-structures in the main cache file major speed gains in dpkg might be achieved.
-
-                                                                  <!-- }}} -->
-
-</book>