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It doesn't make much sense to keep the old syntax error handling which
doesn't conform to HTML5.
Handling HTML5 parser errors is rather involved and not essential for
parsers.
This was only used by Chromium/WebKit to detect whether xmlParseContent
really succeeded. It's a horrible, overcomplicated hack.
See 8c5848bd and #767.
The latest spec for what it essentially an XPath extension seems to be
this working draft from 2002:
https://www.w3.org/TR/xptr-xpointer/
The xpointer() scheme is listed as "being reviewed" in the XPointer
registry since at least 2006. libxml2 seems to be the only modern
software that tries to implement this spec, but the code has many bugs
and quality issues.
If you configure --with-legacy, old symbols are retained for ABI
compatibility.
Always use XML_WAR_UNDECLARED_ENTITY with warning error level in
documents with external subset or parameter entities. Use
XML_ERR_UNDECLARED_ENTITY otherwise.
Use in ctxt->input->entity instead of ctxt->inputNr to determine whether
we are inside a parameter entity.
Stop using ctxt->external to check whether we're in an external DTD.
This is signaled by ctxt->inSubset == 2.
Before, we often used unbuffered input via the lzma or gzip handlers,
more or less inadvertently.
Change the default file handlers from buffered (stdc FILE) to unbuffered
(POSIX fds).
This allows to report the reason why opening a file failed to the parser
context and improve error messages. Now we can also remove the stat call
before opening a file.
Introduce xmlStrVASPrintf, trying to handle buggy snprintf
implementations.
Introduce xmlSetError to set errors atomically.
Introduce xmlUpdateError to set an error, fixing up node, file and line.
Introduce helper function xmlRaiseMemoryError.
Make legacy error handlers call xmlReportError, avoiding checks in
xmlVRaiseError.
Remove fragile support for getting file and line info from XInclude
nodes.
Fix many places where malloc failures aren't reported.
Make some API function return an error code. Changing the return type
from void to int is technically an ABI break but should be safe on most
platforms.
- xmlNodeSetContent
- xmlNodeSetContentLen
- xmlNodeAddContent
- xmlNodeAddContentLen
- xmlNodeSetBase
Introduce new API functions that return a separate error code if a
memory allocation fails.
- xmlNodeGetAttrValue
- xmlNodeGetBaseSafe
- xmlGetNsListSafe
Introduce private functions xmlTreeEnsureXMLDecl and xmlSplitQName4.
Don't report low-level errors to the global error handler.
Fix tree
Introduce xmlGetNsListSafe
Fix tree
The long-term plan is to remove the built-in HTTP client. There are
still a few downstream projects that use libxml2's client for other
purposes. These users should get deprecation warnings now.
