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xml_node: support backslash as attribute value

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XML allows attribute values like <node attr="\"/>. The XML parser
wrongly reflects this case as 'Invalid_syntax'. This behavior stems from
the implicit use of the 'end_of_quote' function, which considers the
sequence of '\"' as a quoted '"' rather than the end of a quoted string.

The patch solves this problem by making the 'end_of_quote' part of
the tokenizer's scanner policy.

The patch removes the 'end_of_quote' function from 'util/string.h'
because it is not universal, and to avoid the ambiguity with
'SCANNER_POLICY::end_of_quote'.

Fixes #4431
This commit is contained in:
Norman Feske
2022-02-17 12:17:19 +01:00
parent 494f881f27
commit c2efa5406e
10 changed files with 58 additions and 47 deletions
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3
repos/base/recipes/pkg/test-xml_node/runtime
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@@ -96,6 +96,9 @@
[init -> test-xml_node] XML node: name = "visible-tag"
[init -> test-xml_node] XML node: name = "visible-tag"
[init -> test-xml_node]
[init -> test-xml_node] -- Test backslash as attribute value --
[init -> test-xml_node] attribute value: '\'
[init -> test-xml_node]
[init -> test-xml_node] -- Test exporting decoded content from XML node --
[init -> test-xml_node] step 1
[init -> test-xml_node] step 2