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libxml,在UNIX/LINUX下非常重要的一个库,为XML相关应用提供方便.目前上载的是最新版本,若要取得最新版本,请参考里面的readme.

   - reader API: structured error reporting (Steve Ball)
   - Windows compilation: mingw, msys (Mikhail Grushinskiy), function
    prototype (Cameron Johnson), MSVC6 compiler warnings, _WINSOCKAPI_
  patch
   - Parsers: added xmlByteConsumed(ctxt) API to get the byte offest in
    input.


2.6.5: Jan 25 2004:
   - Bugfixes: dictionnaries for schemas (William Brack), regexp segfault
    (William), xs:all problem (William), a number of XPointer bugfixes
    (William), xmllint error go to stderr, DTD validation problem with
    namespace, memory leak (William), SAX1 cleanup and minimal options fixes
    (Mark Vadoc), parser context reset on error (Shaun McCance), XPath union
    evaluation problem (William) , xmlReallocLoc with NULL (Aleksey Sanin),
    XML Schemas double free (Steve Ball), XInclude with no href, argument
    callbacks order for XPath callbacks (Frederic Peters)
   - Documentation: python scripts (William Brack), xslt stylesheets (John
    Fleck), doc (Sven Zimmerman), I/O example.
   - Python bindings: fixes (William), enum support (St閜hane Bidoul),
    structured error reporting (St閜hane Bidoul)
   - XInclude: various fixes for conformance, problem related to dictionnary
    references (William & me), recursion (William)
   - xmlWriter: indentation (Lucas Brasilino), memory leaks (Alfred
    Mickautsch),
   - xmlSchemas: normalizedString datatype (John Belmonte)
   - code cleanup for strings functions (William)
   - Windows: compiler patches (Mark Vakoc)
   - Parser optimizations, a few new XPath and dictionnary APIs for future
    XSLT optimizations.


2.6.4: Dec 24 2003:
   - Windows build fixes (Igor Zlatkovic)
   - Some serious XInclude problems reported by Oleg Paraschenko and
   - Unix and Makefile packaging fixes (me, William Brack,
   - Documentation improvements (John Fleck, William Brack), example fix
    (Lucas Brasilino)
   - bugfixes: xmlTextReaderExpand() with xmlReaderWalker, XPath handling of
    NULL strings (William Brack) , API building reader or parser from
    filedescriptor should not close it, changed XPath sorting to be stable
    again (William Brack), xmlGetNodePath() generating '(null)' (William
    Brack), DTD validation and namespace bug (William Brack), XML Schemas
    double inclusion behaviour


2.6.3: Dec 10 2003:
   - documentation updates and cleanup (DV, William Brack, John Fleck)
   - added a repository of examples, examples from Aleksey Sanin, Dodji
    Seketeli, Alfred Mickautsch
   - Windows updates: Mark Vakoc, Igor Zlatkovic, Eric Zurcher, Mingw
    (Kenneth Haley)
   - Unicode range checking (William Brack)
   - code cleanup (William Brack)
   - Python bindings: doc (John Fleck),  bug fixes
   - UTF-16 cleanup and BOM issues (William Brack)
   - bug fixes: ID and xmlReader validation, XPath (William Brack),
    xmlWriter (Alfred Mickautsch), hash.h inclusion problem, HTML parser
    (James Bursa), attribute defaulting and validation, some serialization
    cleanups, XML_GET_LINE macro, memory debug when using threads (William
    Brack), serialization of attributes and entities content, xmlWriter
    (Daniel Schulman)
   - XInclude bugfix, new APIs and update to the last version including the
    namespace change.
   - XML Schemas improvements: include (Robert Stepanek), import and
    namespace handling, fixed the regression tests troubles, added examples
    based on Eric van der Vlist book, regexp fixes
   - preliminary pattern support for streaming (needed for schemas
    constraints), added xmlTextReaderPreservePattern() to collect subdocument
    when streaming.
   - various fixes in the structured error handling


2.6.2: Nov 4 2003:
   - XPath context unregistration fixes
   - text node coalescing fixes (Mark Lilback)
   - API to screate a W3C Schemas from an existing document (Steve Ball)
   - BeOS patches (Marcin 'Shard' Konicki)
   - xmlStrVPrintf function added (Aleksey Sanin)
   - compilation fixes (Mark Vakoc)
   - stdin parsing fix (William Brack)
   - a posteriori DTD validation fixes
   - xmlReader bug fixes: Walker fixes, python bindings
   - fixed xmlStopParser() to really stop the parser and errors
   - always generate line numbers when using the new xmlReadxxx
  functions
   - added XInclude support to the xmlReader interface
   - implemented XML_PARSE_NONET parser option
   - DocBook XSLT processing bug fixed
   - HTML serialization for <p> elements (William Brack and me)
   - XPointer failure in XInclude are now handled as resource errors
   - fixed xmllint --html to use the HTML serializer on output (added
    --xmlout to implement the previous behaviour of saving it using the XML
    serializer)


2.6.1: Oct 28 2003:
   - Mostly bugfixes after the big 2.6.0 changes
   - Unix compilation patches: libxml.m4 (Patrick Welche), warnings cleanup
    (William Brack)
   - Windows compilation patches (Joachim Bauch, Stephane Bidoul, Igor
    Zlatkovic)
   - xmlWriter bugfix (Alfred Mickautsch)
   - chvalid.[ch]: couple of fixes from Stephane Bidoul
   - context reset: error state reset, push parser reset (Graham
  Bennett)
   - context reuse: generate errors if file is not readable
   - defaulted attributes for element coming from internal entities
    (Stephane Bidoul)
   - Python: tab and spaces mix (William Brack)
   - Error handler could crash in DTD validation in 2.6.0
   - xmlReader: do not use the document or element _private field
   - testSAX.c: avoid a problem with some PIs (Massimo Morara)
   - general bug fixes: mandatory encoding in text decl, serializing
    Document Fragment nodes, xmlSearchNs 2.6.0 problem (Kasimier Buchcik),
    XPath errors not reported,  slow HTML parsing of large documents.


2.6.0: Oct 20 2003:
   - Major revision release: should be API and ABI compatible but got a lot
    of change
   - Increased the library modularity, far more options can be stripped out,
    a --with-minimum configuration will weight around 160KBytes
   - Use per parser and per document dictionnary, allocate names and small
    text nodes from the dictionnary
   - Switch to a SAX2 like parser rewrote most of the XML parser core,
    provides namespace resolution and defaulted attributes, minimize memory
    allocations and copies, namespace checking and specific error handling,
    immutable buffers, make predefined entities static structures, etc...
   - rewrote all the error handling in the library, all errors can be
    intercepted at a structured level, with precise information
  available.
   - New simpler and more generic XML and HTML parser APIs, allowing to
    easilly modify the parsing options and reuse parser context for multiple
    consecutive documents.
   - Similar new APIs for the xmlReader, for options and reuse, provided new
    functions to access content as const strings, use them for Python
  bindings
   - a  lot of other smaller API improvements: xmlStrPrintf (Aleksey Sanin),
    Walker i.e. reader on a document tree based on Alfred Mickautsch code,
    make room in nodes for line numbers, reference counting and future PSVI
    extensions, generation of character ranges to be checked with faster
    algorithm (William),  xmlParserMaxDepth (Crutcher Dunnavant), buffer
    access
   - New xmlWriter API provided by Alfred Mickautsch
   - Schemas: base64 support by Anthony Carrico
   - Parser<->HTTP integration fix, proper processing of the Mime-Type
    and charset informations if available.
   - Relax-NG: bug fixes including the one reported by Martijn Faassen and
    zeroOrMore, better error reporting.
   - Python bindings (St閜hane Bidoul), never use stdout for errors
  output
   - Portability: all the headers have macros for export and calling
    convention definitions (Igor Zlatkovic), VMS update (Craig A. Berry),
    Windows: threads (Jesse Pelton), Borland compiler (Eric Zurcher,  Igor),
    Mingw (Igor), typos (Mark Vakoc),  beta version (Stephane Bidoul),
    warning cleanups on AIX and MIPS compilers (William Brack), BeOS (Marcin
    'Shard' Konicki)
   - Documentation fixes and README (William Brack), search fix (William),
    tutorial updates (John Fleck), namespace docs (Stefan Kost)
   - Bug fixes: xmlCleanupParser (Dave Beckett), threading uninitialized
    mutexes, HTML doctype lowercase,  SAX/IO (William), compression detection
    and restore (William), attribute declaration in DTDs (William), namespace
    on attribute in HTML output (William), input filename (Rob Richards),
    namespace DTD validation, xmlReplaceNode (Chris Ryland), I/O callbacks
    (Markus Keim), CDATA serialization (Shaun McCance), xmlReader (Peter
    Derr), high codepoint charref like &#x10FFFF;, buffer access in push
    mode (Justin Fletcher), TLS threads on Windows (Jesse Pelton), XPath bug
    (William), xmlCleanupParser (Marc Liyanage), CDATA output (William), HTTP
    error handling.
   - xmllint options: --dtdvalidfpi for Tobias Reif, --sax1 for compat
    testing,  --nodict for building without tree dictionnary, --nocdata to
    replace CDATA by text, --nsclean to remove surperfluous  namespace
    declarations
   - added xml2-config --libtool-libs option from Kevin P. Fleming
   - a lot of profiling and tuning of the code, speedup patch for
    xmlSearchNs() by Luca Padovani. The xmlReader should do far less
    allocation and it speed should get closer to SAX. Chris Anderson worked
    on speeding and cleaning up repetitive checking code.
   - cleanup of "make tests"
   - libxml-2.0-uninstalled.pc from Malcolm Tredinnick
   - deactivated the broken docBook SGML parser code and plugged the XML
    parser instead.


2.5.11: Sep 9 2003:
A bugfix only release:   - risk of crash in Relax-NG
   - risk of crash when using multithreaded programs


2.5.10: Aug 15 2003:
A bugfixes only release   - Windows Makefiles (William Brack)
   - UTF-16 support fixes (Mark Itzcovitz)
   - Makefile and portability (William Brack) automake, Linux alpha, Mingw
    on Windows (Mikhail Grushinskiy)
   - HTML parser (Oliver Stoeneberg)
   - XInclude performance problem reported by Kevin Ruscoe
   - XML parser performance problem reported by Grant Goodale
   - xmlSAXParseDTD() bug fix from Malcolm Tredinnick
   - and a couple other cleanup


2.5.9: Aug 9 2003:
   - bugfixes: IPv6 portability, xmlHasNsProp (Markus Keim), Windows build
    (Wiliam Brake, Jesse Pelton, Igor), Schemas (Peter Sobisch), threading
    (Rob Richards), hexBinary type (), UTF-16 BOM (Dodji Seketeli),
    xmlReader, Relax-NG schemas compilation, namespace handling,  EXSLT (Sean
    Griffin), HTML parsing problem (William Brack), DTD validation for mixed
    content + namespaces, HTML serialization, library initialization,
    progressive HTML parser
   - better interfaces for Relax-NG error handling (Joachim Bauch, )
   - adding xmlXIncludeProcessTree() for XInclud'ing in a subtree
   - doc fixes and improvements (John Fleck)
   - configure flag for -with-fexceptions when embedding in C++
   - couple of new UTF-8 helper functions (William Brack)
   - general encoding cleanup + ISO-8859-x without iconv (Peter Jacobi)
   - xmlTextReader cleanup + enum for node types (Bjorn Reese)
   - general compilation/warning cleanup Solaris/HP-UX/... (William
  Brack)


2.5.8: Jul 6 2003:
   - bugfixes: XPath, XInclude, file/URI mapping, UTF-16 save (Mark
    Itzcovitz), UTF-8 checking, URI saving, error printing (William Brack),
    PI related memleak, compilation without schemas or without xpath (Joerg
    Schmitz-Linneweber/Garry Pennington), xmlUnlinkNode problem with DTDs,
    rpm problem on , i86_64, removed a few compilation problems from 2.5.7,
    xmlIOParseDTD, and xmlSAXParseDTD (Malcolm Tredinnick)
   - portability: DJGPP (MsDos) , OpenVMS (Craig A. Berry)
   - William Brack fixed multithreading lock problems
   - IPv6 patch for FTP and HTTP accesses (Archana Shah/Wipro)
   - Windows fixes (Igor Zlatkovic,  Eric Zurcher), threading (St閜hane
    Bidoul)
   - A few W3C Schemas Structure improvements
   - W3C Schemas Datatype improvements (Charlie Bozeman)
   - Python bindings for thread globals (St閜hane Bidoul), and method/class
    generator
   - added --nonet option to xmllint
   - documentation improvements (John Fleck)


2.5.7: Apr 25 2003:
   - Relax-NG: Compiling to regexp and streaming validation on top of the
    xmlReader interface, added to xmllint --stream
   - xmlReader: Expand(), Next() and DOM access glue, bug fixes
   - Support for large files: RGN validated a 4.5GB instance
   - Thread support is now configured in by default
   - Fixes: update of the Trio code (Bjorn), WXS Date and Duration fixes
    (Charles Bozeman), DTD and namespaces (Brent Hendricks), HTML push parser
    and zero bytes handling, some missing Windows file path conversions,
    behaviour of the parser and validator in the presence of "out of memory"
    error conditions
   - extended the API to be able to plug a garbage collecting memory
    allocator, added xmlMallocAtomic() and modified the allocations
    accordingly.
   - Performances: removed excessive malloc() calls, speedup of the push and
    xmlReader interfaces, removed excessive thread locking
   - Documentation: man page (John Fleck), xmlReader documentation
   - Python: adding binding for xmlCatalogAddLocal (Brent M Hendricks)


2.5.6: Apr 1 2003:
   - Fixed W3C XML Schemas datatype, should be compliant now except for
    binHex and base64 which are not supported yet.
   - bug fixes: non-ASCII IDs, HTML output, XInclude on large docs and
    XInclude entities handling, encoding detection on external subsets, XML
    Schemas bugs and memory leaks, HTML parser (James Bursa)
   - portability: python/trio (Albert Chin), Sun compiler warnings
   - documentation: added --relaxng option to xmllint man page (John)
   - improved error reporting: xml:space, start/end tag mismatches, Relax NG
    errors


2.5.5: Mar 24 2003:
   - Lot of fixes on the Relax NG implementation. More testing including
    DocBook and TEI examples.
   - Increased the support for W3C XML Schemas datatype
   - Several bug fixes in the URI handling layer
   - Bug fixes: HTML parser, xmlReader, DTD validation, XPath, encoding
    conversion, line counting in the parser.
   - Added support for $XMLLINT_INDENT environment variable, FTP delete
   - Fixed the RPM spec file name


2.5.4: Feb 20 2003:
   - Conformance testing and lot of fixes on Relax NG and XInclude