TODO
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上传日期:2013-07-25
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- TODO for the XML parser and stuff:
- ==================================
- TODO:
- =====
- - DOM needs
- xmlAttrPtr xmlNewDocProp(xmlDocPtr doc, const xmlChar *name, const xmlChar *value)
- int xmlPruneProp(xmlNodePtr node, xmlAtttrPtr attr);
- - Fix DTD + namespace validity problem
- "Not valid: root and DtD name do not match 'ROOT' and 'prefix:ROOT'"
- - add support for the trick from Henry conf/sun/valid/empty.xml
- - Correct standalone checking/emitting (hard)
- 2.9 Standalone Document Declaration
- - URI checkings (no fragments) rfc2396.txt
- - Better checking of external parsed entities TAG 1234
- - Find way of representing PERefs in the Dtd so that %entity; can
- be saved back.
- - Go through erratas and do the cleanup.
- http://www.w3.org/XML/xml-19980210-errata ... bummmer
- - Handle undefined namespaces in entity contents better ... at least
- issue a warning
- - General checking of DTD validation in presence of namespaces ... hairy
- TODO:
- =====
- - Get OASIS testsuite to a more friendly result, check all the results
- once stable.
- http://xmlsoft.org/conf/result.html
- - Optimization of tag strings allocation ?
- - maintain coherency of namespace when doing cut'n paste operations
- => the functions are coded, but need testing
- - function to rebuild the ID table
- - functions to rebuild the DTD hash tables (after DTD changes).
-
- EXTENSIONS:
- ===========
- - Tools to produce man pages from the SGML docs.
- - Finish XPath
- => attributes addressing troubles
- => defaulted attributes handling
- => namespace axis ?
- - Add Xpointer recognition/API
- - Add Xlink recognition/API
- => started adding an xlink.[ch] with a unified API for XML and HTML.
- - Implement XSLT
- => seems that someone volunteered ?!?
- - Implement XSchemas
- - O2K parsing;
- => this is a somewhat ugly mix of HTML and XML, adding a specific
- routine in the comment parsing code of HTML and plug the XML
- parsing one in-there should not be too hard. Key point is to get
- XSL to transform all this to something decent ...
- - extend the shell with:
- - edit
- - load/save
- - mv (yum, yum, but it's harder because directories are ordered in
- our case, mvup and mvdown would be required)
- - Add HTML validation using the XHTML DTD
- - problem: do we want to keep and maintain the code for handling
- DTD/System ID cache directly in libxml ?
- - Add a DTD cache prefilled with xhtml DTDs and entities and a program to
- manage them -> like the /usr/bin/install-catalog from SGML
- right place seems $datadir/xmldtds
- Maybe this is better left to user apps
- - Add output to XHTML in case of HTML documents.
- Done:
- =====
- - Added a clean mechanism for overload or added input methods:
- xmlRegisterInputCallbacks()
- - dynamically adapt the alloc entry point to use g_alloc()/g_free()
- if the programmer wants it:
- - use xmlMemSetup() to reset the routines used.
- - Check attribute normalization especially xmlGetProp()
- - Validity checking problems for NOTATIONS attributes
- - Validity checking problems for ENTITY ENTITIES attributes
- - Parsing of a well balanced chunk xmlParseBalancedChunkMemory()
- - URI module: validation, base, etc ... see uri.[ch]
- - turn tester into a generic program xmllint installed with libxml
- - extend validity checks to go through entities content instead of
- just labelling them PCDATA
- - Save Dtds using the children list instead of dumping the tables,
- order is preserved as well as comments and PIs
- - Wrote a notice of changes requires to go from 1.x to 2.x
- - make sure that all SAX callbacks are disabled if a WF error is detected
- - checking/handling of newline normalization
- http://localhost/www.xml.com/axml/target.html#sec-line-ends
- - correct checking of '&' '%' on entities content.
- - checking of PE/Nesting on entities declaration
- - checking/handling of xml:space
- - checking done.
- - handling done, not well tested
- - Language identification code, productions [33] to [38]
- => done, the check has been added and report WFness errors
- - Conditional sections in DTDs [61] to [65]
- => should this crap be really implemented ???
- => Yep OASIS testsuite uses them
- - Allow parsed entities defined in the internal subset to override
- the ones defined in the external subset (DtD customization).
- => This mean that the entity content should be computed only at
- use time, i.e. keep the orig string only at parse time and expand
- only when referenced from the external subset :-(
- Needed for complete use of most DTD from Eve Maler
- - Add regression tests for all WFC errors
- => did some in test/WFC
- => added OASIS testsuite routines
- http://xmlsoft.org/conf/result.html
- - I18N: http://wap.trondheim.com/vaer/index.phtml is not XML and accepted
- by the XML parser, UTF-8 should be checked when there is no "encoding"
- declared !
- - Support for UTF-8 and UTF-16 encoding
- => added some convertion routines provided by Martin Durst
- patched them, got fixes from @@@
- I plan to keep everything internally as UTF-8 (or ISO-Latin-X)
- this is slightly more costly but more compact, and recent processors
- efficiency is cache related. The key for good performances is keeping
- the data set small, so will I.
- => the new progressive reading routines call the detection code
- is enabled, tested the ISO->UTF-8 stuff
- - External entities loading:
- - allow override by client code
- - make sure it is alled for all external entities referenced
- Done, client code should use xmlSetExternalEntityLoader() to set
- the default loading routine. It will be called each time an external
- entity entity resolution is triggered.
- - maintain ID coherency when removing/changing attributes
- The function used to deallocate attributes now check for it being an
- ID and removes it from the table.
- - push mode parsing i.e. non-blocking state based parser
- done, both for XML and HTML parsers. Use xmlCreatePushParserCtxt()
- and xmlParseChunk() and html counterparts.
- The tester program now has a --push option to select that parser
- front-end. Douplicated tests to use both and check results are similar.
- - Most of XPath, still see some troubles and occasionnal memleaks.
- - an XML shell, allowing to traverse/manipulate an XML document with
- a shell like interface, and using XPath for the anming syntax
- - use of readline and history added when available
- - the shell interface has been cleanly separated and moved to debugXML.c
- - HTML parser, should be fairly stable now
- - API to search the lang of an attribute
- - Collect IDs at parsing and maintain a table.
- PBM: maintain the table coherency
- PBM: how to detect ID types in absence of DtD !
- - Use it for XPath ID support
- - Add validity checking
- Should be finished now !
- - Add regression tests with entity substitutions
- - External Parsed entities, either XML or external Subset [78] and [79]
- parsing the xmllang DtD now works, so it should be sufficient for
- most cases !
- - progressive reading. The entity support is a first step toward
- asbtraction of an input stream. A large part of the context is still
- located on the stack, moving to a state machine and putting everyting
- in the parsing context should provide an adequate solution.
- => Rather than progressive parsing, give more power to the SAX-like
- interface. Currently the DOM-like representation is built but
- => it should be possible to define that only as a set of SAX callbacks
- and remove the tree creation from the parser code.
- DONE
- - DOM support, instead of using a proprietary in memory
- format for the document representation, the parser should
- call a DOM API to actually build the resulting document.
- Then the parser becomes independent of the in-memory
- representation of the document. Even better using RPC's
- the parser can actually build the document in another
- program.
- => Work started, now the internal representation is by default
- very near a direct DOM implementation. The DOM glue is implemented
- as a separate module. See the GNOME gdome module.
- - C++ support : John Ehresman <jehresma@dsg.harvard.edu>
- - Updated code to follow more recent specs, added compatibility flag
- - Better error handling, use a dedicated, overridable error
- handling function.
- - Support for CDATA.
- - Keep track of line numbers for better error reporting.
- - Support for PI (SAX one).
- - Support for Comments (bad, should be in ASAP, they are parsed
- but not stored), should be configurable.
- - Improve the support of entities on save (+SAX).