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maint
* richcarl/xmerl-avoid-code-server-serialization/OTP-11463:
Avoid serialization on code_server in xmerl:export()
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The inheritance mechanism in xmerl used to use 'catch apply(M,F,Args)' to
try different modules M until one was found that had a function F/A.
However, when M:F/A does not exist, apply/3 will trap to
error_handler:undefined_function/3, which will call code:ensure_loaded(M),
making a synchronous request to the code server process. If many processes
tried to use xmerl:export() concurrently, they would get serialized waiting
for the code server process. This patch uses erlang:function_exported/3
instead to check if M:F/A exists. If M exists, it should already have been
loaded at that point due to the inheritance checking in the
xmerl:callbacks/1 function.
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Previously, a match would not be found if the namespace prefix in the
XPath query was not contained in the original document. This allows
the `namespace' option to provide a prefix that will be resolved to a
namespace URI.
See Section 2.3 of the XPath 1.0 specification for the behaviour of
'NCName:*' node tests.
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The core use case is a query where the original prefix in the scanned
document is unknown (or varying). For example:
xmerl_xpath:scan("//@ns:name", Doc, [{namespace, [{"ns", Uri}]}])
Previously, this would only return a result if the namespace prefix
was an exact match.
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Ensures that both the original namespace prefix and a namespace prefix
provided to the xmlContext will both return the same sets of nodes.
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* fenollp/treewide_remove_unexpected_0xff/OTP-11323:
Remove ^L characters hidden randomly in the code. Not those used in text files as delimiters.
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files as delimiters.
While working on a tool that processes Erlang code and testing it against this repo,
I found out about those little sneaky 0xff. I thought it may be of help to other
people build such tools to remove non-conforming-to-standard characters.
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* nox/enable-silent-rules/OTP-10726:
Implement ./otp_build configure --enable-silent-rules
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With silent rules, the output of make is less verbose and compilation
warnings are easier to spot. Silent rules are disabled by default and
can be disabled or enabled at will by make V=0 and make V=1.
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Examples overflowing the width of PDF pages have been fixed.
The remaining warnings are due to table cells, and require more
work.
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OTP-10106
OTP-10107
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OTP-9821
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The uniqueness check of attributes failed when the namespace_conformant
flag was set to true.
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Add flag {comments, Flag} to xmerl_scan for filtering of comments.
Default (true) is that xmlComment records are returned from the scanner
and this flag should be set to false if one don't want comments
in the output.
Fix some bugs to get the test cases to run clean.
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Namespace nodes are represented as `#xmlNsNode` records.
Now that the namespace axis is correctly implemented, attributes nodes
corresponding to attributes that declare namespaces are ignored.
See [5.3 Attribute Nodes][xpath-5.3]:
> There are no attribute nodes corresponding to attributes
> that declare namespaces.
[xpath-5.3]: http://www.w3.org/TR/xpath/#attribute-nodes
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This change allows numbers and literals to be used as top-level primary
expressions without failing:
1> xmerl_xpath:string("3", Doc).
#xmlObj{type = number,value = 3}
2> xmerl_xpath:string("'foo'", Doc).
#xmlObj{type = string,value = "foo"}
We still need to allow arithmetic, comparative, boolean and negative
expressions, as in `xmerl_xpath_pred:expr/2`.
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When `default_attrs` is `true`, any attribute with a default value defined
in the doctype but not in the attribute axis of the currently scanned
element is added to it.
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Functions `xmerl_scan:file/2` and `xmerl_scan:string/2` now accepts a
new option `{document, true}` to produce a whole document as a
`xmlDocument` record instead of just the root element node.
You may wonder why this would be useful, this option is the only way to
get to the top-level comments and processing instructions without
hooking through the customization functions. Those nodes are needed to
implement [Canonical XML][c14n-xml] support.
[c14n-xml]: http://www.w3.org/TR/2008/PR-xml-c14n11-20080129/
"Canonical XML"
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See [Namespaces in XML 1.0 (Third Edition)][1]:
> The prefix xml is by definition bound to the namespace name
> http://www.w3.org/XML/1998/namespace. It MAY, but need not, be
> declared, and MUST NOT be bound to any other namespace name. Other
> prefixes MUST NOT be bound to this namespace name, and it MUST NOT be
> declared as the default namespace.
>
> The prefix xmlns is used only to declare namespace bindings and is by
> definition bound to the namespace name http://www.w3.org/2000/xmlns/.
> It MUST NOT be declared . Other prefixes MUST NOT be bound to this
> namespace name, and it MUST NOT be declared as the default namespace.
> Element names MUST NOT have the prefix xmlns.
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> In XML documents conforming to this specification, no tag may containe
> two attributes which have identical names, or have qualified names
> with the same local part and with prefixes which have been bound to
> namespace names that are identical.
[1] http://www.w3.org/TR/REC-xml-names/
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