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Commit Graph

13 Commits

Author SHA1 Message Date
Nick Wellnhofer
f19a95108a parser: Report malloc failures
Fix many places where malloc failures aren't reported.

Make xmlErrMemory public. This is useful for custom external entity
loaders.

Introduce new API function xmlSwitchEncodingName.

Change the way how we store whether the the parser is stopped. This used
to be signaled by setting ctxt->instate to XML_PARSER_EOF which was
misdesigned and error-prone. Set ctxt->disableSAX to 2 instead and
introduce a macro PARSER_STOPPED. Also stop to remove parser inputs in
xmlHaltParser. This allows to remove many checks of ctxt->instate.

Introduce xmlErrParser to handle errors if a parser context is
available.
2023-12-11 22:13:05 +01:00
Nick Wellnhofer
c082ef4644 parser: Stop switching to ISO-8859-1 on encoding errors
Use U+FFFD Replacement Character if invalid UTF-8 is encountered in
recovery mode.

Also rewrite xmlNextChar and xmlCurrentChar.

Fixes #598.
2023-10-22 16:32:54 +02:00
Nick Wellnhofer
eb69c1d39d parser: Fix initialization of namespace data
Move initialization to xmlInitSAXParserCtxt. Also add missing XML_HIDDEN
to xmlParserNsFree.

Fixes #597.
2023-10-02 12:33:29 +02:00
Nick Wellnhofer
e0dd330b8f parser: Use hash tables to avoid quadratic behavior
Use a hash table to lookup namespaces by prefix. The hash table stores
an index into the namespace table. Auxiliary data for namespaces is
stored in a separate array along the main namespace table.

Use a hash table to verify attribute uniqueness. The hash table stores
an index into the attribute table.

Reuse hash value from the dictionary to avoid computing them twice.

See #346.
2023-09-29 12:43:22 +02:00
Nick Wellnhofer
f1c1f5c6b4 parser: Revert change to doc->encoding
Fixes #579.
2023-08-17 12:47:14 +02:00
Nick Wellnhofer
ec7be50662 parser: Rework encoding detection
Introduce XML_INPUT_HAS_ENCODING flag for xmlParserInput which is set
when xmlSwitchEncoding is called. The parser can use the flag to
reliably detect whether an encoding was already set via user override,
BOM or other auto-detection. In this case, the encoding declaration
won't be used to switch the encoding.

Before, an inscrutable mix of ctxt->charset, ctxt->input->encoding
and ctxt->input->buf->encoder was used.

Introduce private helper functions to switch encodings used by both the
XML and HTML parser:

- xmlDetectEncoding which skips over the BOM, allowing to remove the
  BOM checks from other encoding functions.
- xmlSetDeclaredEncoding, replacing htmlCheckEncodingDirect, which warns
  about encoding mismatches.

If users override the encoding, store the declared instead of the actual
encoding in xmlDoc. In this case, the actual encoding is known and the
raw value from the doc is more useful.

Also use the input flags to store the ISO-8859-1 fallback state.
Restrict the fallback to cases where no encoding was specified. (The
fallback is only useful in recovery mode and these days broken UTF-8 is
probably more likely than ISO-8859-1, so it might eventually be removed
completely.)

The 'charset' member of xmlParserCtxt is now unused. The 'encoding'
member of xmlParserInput is now unused.

The 'standalone' member of xmlParserInput is renamed to 'flags'.

A new parser state XML_PARSER_XML_DECL is added for the push parser.
2023-08-08 15:19:46 +02:00
Nick Wellnhofer
fc69cf568b parser: Move xmlFatalErr to parserInternals.c 2023-04-30 17:51:29 +02:00
Nick Wellnhofer
04d1bedd8c parser: Rework shrinking of input buffers
Don't try to grow the input buffer in xmlParserShrink. This makes sure
that no memory allocations are made and the function always succeeds.

Remove unnecessary invocations of SHRINK. Invoke SHRINK at the end of
DTD parsing loops.

Shrink before growing.
2023-03-21 13:19:18 +01:00
Nick Wellnhofer
b167c73144 parser: Fix short-lived regression causing infinite loops
Fix 3eb6bf03. We really have to halt the parser, so the input buffer
gets reset.
2023-03-14 15:16:04 +01:00
Nick Wellnhofer
2099441f32 parser: Stop calling xmlParserInputShrink
Introduce xmlParserShrink which takes a parser context to simplify error
handling.
2023-03-13 17:51:13 +01:00
Nick Wellnhofer
3eb6bf0386 parser: Stop calling xmlParserInputGrow
Introduce xmlParserGrow which takes a parser context to simplify error
handling.
2023-03-12 17:05:51 +01:00
Nick Wellnhofer
ccb6d54409 Hide internal functions
These functions were never declared in public headers, so it should be
safe to hide them.

Fixes #139.
2022-11-27 02:20:53 +01:00
Nick Wellnhofer
0f568c0b73 Consolidate private header files
Private functions were previously declared

- in header files in the root directory
- in public headers guarded with IN_LIBXML
- in libxml.h
- redundantly in source files that used them.

Consolidate all private header files in include/private.
2022-08-26 02:11:56 +02:00