reactos/lib/libxml2/TODO

   1 124907 HTML parse buffer problem when parsing larse in-memory docs
   2 124110 DTD validation && wrong namespace
   3 123564 xmllint --html --format
   4
   5            TODO for the XML parser and stuff:
   6            ==================================
   7
   8       $Id: TODO,v 1.44 2005/01/07 13:56:19 veillard Exp $
   9
  10     this tend to be outdated :-\ ...
  11
  12 DOCS:
  13 =====
  14
  15 - use case of using XInclude to load for example a description.
  16   order document + product base -(XSLT)-> quote with XIncludes
  17                                                    |
  18   HTML output with description of parts <---(XSLT)--
  19
  20 TODO:
  21 =====
  22 - XInclude at the SAX level (libSRVG)
  23 - fix the C code prototype to bring back doc/libxml-undocumented.txt
  24   to a reasonable level
  25 - Computation of base when HTTP redirect occurs, might affect HTTP
  26   interfaces.
  27 - Computation of base in XInclude. Relativization of URIs.
  28 - listing all attributes in a node.
  29 - Better checking of external parsed entities TAG 1234
  30 - Go through erratas and do the cleanup.
  31   http://www.w3.org/XML/xml-19980210-errata ... started ...
  32 - jamesh suggestion: SAX like functions to save a document ie. call a
  33   function to open a new element with given attributes, write character
  34   data, close last element, etc
  35   + inversted SAX, initial patch in April 2002 archives.
  36 - htmlParseDoc has parameter encoding which is not used.
  37   Function htmlCreateDocParserCtxt ignore it.
  38 - fix realloc() usage.
  39 - Stricten the UTF8 conformance (Martin Duerst):
  40   http://www.w3.org/2001/06/utf-8-test/.
  41   The bad files are in http://www.w3.org/2001/06/utf-8-wrong/.
  42 - xml:id normalized value
  43
  44 TODO:
  45 =====
  46
  47 - move all string manipulation functions (xmlStrdup, xmlStrlen, etc.) to
  48   global.c. Bjorn noted that the following files depends on parser.o solely
  49   because of these string functions: entities.o, global.o, hash.o, tree.o,
  50   xmlIO.o, and xpath.o.
  51
  52 - Optimization of tag strings allocation ?
  53
  54 - maintain coherency of namespace when doing cut'n paste operations
  55   => the functions are coded, but need testing
  56
  57 - function to rebuild the ID table
  58 - functions to rebuild the DTD hash tables (after DTD changes).
  59
  60
  61 EXTENSIONS:
  62 ===========
  63
  64 - Tools to produce man pages from the SGML docs.
  65
  66 - Add Xpointer recognition/API
  67
  68 - Add Xlink recognition/API
  69   => started adding an xlink.[ch] with a unified API for XML and HTML.
  70      it's crap :-(
  71
  72 - Implement XSchemas
  73   => Really need to be done <grin/>
  74   - datatype are complete, but structure support is very limited.
  75
  76 - extend the shell with:
  77    - edit
  78    - load/save
  79    - mv (yum, yum, but it's harder because directories are ordered in
  80      our case, mvup and mvdown would be required)
  81
  82
  83 Done:
  84 =====
  85
  86 - Add HTML validation using the XHTML DTD
  87   - problem: do we want to keep and maintain the code for handling
  88     DTD/System ID cache directly in libxml ?
  89   => not really done that way, but there are new APIs to check elements
  90      or attributes. Otherwise XHTML validation directly ...
  91
  92 - XML Schemas datatypes except Base64 and BinHex
  93
  94 - Relax NG validation
  95
  96 - XmlTextReader streaming API + validation
  97
  98 - Add a DTD cache prefilled with xhtml DTDs and entities and a program to
  99   manage them -> like the /usr/bin/install-catalog from SGML
 100   right place seems $datadir/xmldtds
 101   Maybe this is better left to user apps
 102   => use a catalog instead , and xhtml1-dtd package
 103
 104 - Add output to XHTML
 105   => XML serializer automatically recognize the DTd and apply the specific
 106      rules.
 107
 108 - Fix output of <tst val="x&#xA;y"/>
 109
 110 - compliance to XML-Namespace checking, see section 6 of
 111   http://www.w3.org/TR/REC-xml-names/
 112
 113 - Correct standalone checking/emitting (hard)
 114   2.9 Standalone Document Declaration
 115
 116 - Implement OASIS XML Catalog support
 117   http://www.oasis-open.org/committees/entity/
 118
 119 - Get OASIS testsuite to a more friendly result, check all the results
 120   once stable. the check-xml-test-suite.py script does this
 121
 122 - Implement XSLT
 123   => libxslt
 124
 125 - Finish XPath
 126   => attributes addressing troubles
 127   => defaulted attributes handling
 128   => namespace axis ?
 129   done as XSLT got debugged
 130
 131 - bug reported by Michael Meallin on validation problems
 132   => Actually means I need to add support (and warn) for non-deterministic
 133      content model.
 134 - Handle undefined namespaces in entity contents better ... at least
 135   issue a warning
 136 - DOM needs
 137   int xmlPruneProp(xmlNodePtr node, xmlAtttrPtr attr);
 138   => done it's actually xmlRemoveProp xmlUnsetProp xmlUnsetNsProp
 139
 140 - HTML: handling of Script and style data elements, need special code in
 141   the parser and saving functions (handling of < > " ' ...):
 142   http://www.w3.org/TR/html4/types.html#type-script
 143   Attributes are no problems since entities are accepted.
 144 - DOM needs
 145   xmlAttrPtr xmlNewDocProp(xmlDocPtr doc, const xmlChar *name, const xmlChar *value)
 146 - problem when parsing hrefs with & with the HTML parser (IRC ac)
 147 - If the internal encoding is not UTF8 saving to a given encoding doesn't
 148   work => fix to force UTF8 encoding ...
 149   done, added documentation too
 150 - Add an ASCII I/O encoder (asciiToUTF8 and UTF8Toascii)
 151 - Issue warning when using non-absolute namespaces URI.
 152 - the html parser should add <head> and <body> if they don't exist
 153   started, not finished.
 154   Done, the automatic closing is added and 3 testcases were inserted
 155 - Command to force the parser to stop parsing and ignore the rest of the file.
 156   xmlStopParser() should allow this, mostly untested
 157 - support for HTML empty attributes like <hr noshade>
 158 - plugged iconv() in for support of a large set of encodings.
 159 - xmlSwitchToEncoding() rewrite done
 160 - URI checkings (no fragments) rfc2396.txt
 161 - Added a clean mechanism for overload or added input methods:
 162   xmlRegisterInputCallbacks()
 163 - dynamically adapt the alloc entry point to use g_alloc()/g_free()
 164   if the programmer wants it:
 165     - use xmlMemSetup() to reset the routines used.
 166 - Check attribute normalization especially xmlGetProp()
 167 - Validity checking problems for NOTATIONS attributes
 168 - Validity checking problems for ENTITY ENTITIES attributes
 169 - Parsing of a well balanced chunk xmlParseBalancedChunkMemory()
 170 - URI module: validation, base, etc ... see uri.[ch]
 171 - turn tester into a generic program xmllint installed with libxml
 172 - extend validity checks to go through entities content instead of
 173   just labelling them PCDATA
 174 - Save Dtds using the children list instead of dumping the tables,
 175   order is preserved as well as comments and PIs
 176 - Wrote a notice of changes requires to go from 1.x to 2.x
 177 - make sure that all SAX callbacks are disabled if a WF error is detected
 178 - checking/handling of newline normalization
 179   http://localhost/www.xml.com/axml/target.html#sec-line-ends
 180 - correct checking of '&' '%' on entities content.
 181 - checking of PE/Nesting on entities declaration
 182 - checking/handling of xml:space
 183    - checking done.
 184    - handling done, not well tested
 185 - Language identification code, productions [33] to [38]
 186   => done, the check has been added and report WFness errors
 187 - Conditional sections in DTDs [61] to [65]
 188   => should this crap be really implemented ???
 189   => Yep OASIS testsuite uses them
 190 - Allow parsed entities defined in the internal subset to override
 191   the ones defined in the external subset (DtD customization).
 192   => This mean that the entity content should be computed only at
 193      use time, i.e. keep the orig string only at parse time and expand
 194      only when referenced from the external subset :-(
 195      Needed for complete use of most DTD from Eve Maler
 196 - Add regression tests for all WFC errors
 197   => did some in test/WFC
 198   => added OASIS testsuite routines
 199      http://xmlsoft.org/conf/result.html
 200
 201 - I18N: http://wap.trondheim.com/vaer/index.phtml is not XML and accepted
 202   by the XML parser, UTF-8 should be checked when there is no "encoding"
 203   declared !
 204 - Support for UTF-8 and UTF-16 encoding
 205   => added some convertion routines provided by Martin Durst
 206      patched them, got fixes from @@@
 207      I plan to keep everything internally as UTF-8 (or ISO-Latin-X)
 208      this is slightly more costly but more compact, and recent processors
 209      efficiency is cache related. The key for good performances is keeping
 210      the data set small, so will I.
 211   => the new progressive reading routines call the detection code
 212      is enabled, tested the ISO->UTF-8 stuff
 213 - External entities loading:
 214    - allow override by client code
 215    - make sure it is alled for all external entities referenced
 216   Done, client code should use xmlSetExternalEntityLoader() to set
 217   the default loading routine. It will be called each time an external
 218   entity entity resolution is triggered.
 219 - maintain ID coherency when removing/changing attributes
 220   The function used to deallocate attributes now check for it being an
 221   ID and removes it from the table.
 222 - push mode parsing i.e. non-blocking state based parser
 223   done, both for XML and HTML parsers. Use xmlCreatePushParserCtxt()
 224   and xmlParseChunk() and html counterparts.
 225   The tester program now has a --push option to select that parser
 226   front-end. Douplicated tests to use both and check results are similar.
 227
 228 - Most of XPath, still see some troubles and occasionnal memleaks.
 229 - an XML shell, allowing to traverse/manipulate an XML document with
 230   a shell like interface, and using XPath for the anming syntax
 231   - use of readline and history added when available
 232   - the shell interface has been cleanly separated and moved to debugXML.c
 233 - HTML parser, should be fairly stable now
 234 - API to search the lang of an attribute
 235 - Collect IDs at parsing and maintain a table.
 236    PBM: maintain the table coherency
 237    PBM: how to detect ID types in absence of DtD !
 238 - Use it for XPath ID support
 239 - Add validity checking
 240   Should be finished now !
 241 - Add regression tests with entity substitutions
 242
 243 - External Parsed entities, either XML or external Subset [78] and [79]
 244   parsing the xmllang DtD now works, so it should be sufficient for
 245   most cases !
 246
 247 - progressive reading. The entity support is a first step toward
 248   asbtraction of an input stream. A large part of the context is still
 249   located on the stack, moving to a state machine and putting everyting
 250   in the parsing context should provide an adequate solution.
 251   => Rather than progressive parsing, give more power to the SAX-like
 252      interface. Currently the DOM-like representation is built but
 253      => it should be possible to define that only as a set of SAX callbacks
 254         and remove the tree creation from the parser code.
 255         DONE
 256
 257 - DOM support, instead of using a proprietary in memory
 258   format for the document representation, the parser should
 259   call a DOM API to actually build the resulting document.
 260   Then the parser becomes independent of the in-memory
 261   representation of the document. Even better using RPC's
 262   the parser can actually build the document in another
 263   program.
 264   => Work started, now the internal representation is by default
 265      very near a direct DOM implementation. The DOM glue is implemented
 266      as a separate module. See the GNOME gdome module.
 267
 268 - C++ support : John Ehresman <jehresma@dsg.harvard.edu>
 269 - Updated code to follow more recent specs, added compatibility flag
 270 - Better error handling, use a dedicated, overridable error
 271   handling function.
 272 - Support for CDATA.
 273 - Keep track of line numbers for better error reporting.
 274 - Support for PI (SAX one).
 275 - Support for Comments (bad, should be in ASAP, they are parsed
 276   but not stored), should be configurable.
 277 - Improve the support of entities on save (+SAX).
 278