fix: Extra content at the end of the document #161
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## Why? XML with multiple root elements is invalid. See: ruby#160 (comment)
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## Why? XML declaration must be the first item. https://www.w3.org/TR/2006/REC-xml11-20060816/#document ``` [1] document ::= ( prolog element Misc* ) - ( Char* RestrictedChar Char* ) ``` https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-prolog ``` [22] prolog ::= XMLDecl Misc* (doctypedecl Misc*)? ``` https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-XMLDecl ``` [23] XMLDecl ::= '<?xml' VersionInfo EncodingDecl? SDDecl? S? '?>' ``` See: ruby#161 (comment)
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lib/rexml/parsers/baseparser.rb
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| return [ :start_element, tag, attributes ] | ||
| end | ||
| else | ||
| text = @source.read_until("<") | ||
| if text.chomp!("<") | ||
| @source.position -= "<".bytesize | ||
| end | ||
| if @tags.empty? and @have_root | ||
| if text.strip != "" |
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strip allocates a new string. Can we avoid it?
For example: /\A\s*\z/.match?(text)
## Why? XML with additional content at the end of the document is invalid. https://www.w3.org/TR/2006/REC-xml11-20060816/#document ``` [1] document ::= ( prolog element Misc* ) - ( Char* RestrictedChar Char* ) ``` https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-Misc ``` [27] Misc ::= Comment | PI | S ``` https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-PI ``` [16] PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>' ``` https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-PITarget ``` [17] PITarget ::= Name - (('X' | 'x') ('M' | 'm') ('L' | 'l')) ```
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## Why? XML declaration must be the first item. https://www.w3.org/TR/2006/REC-xml11-20060816/#document ``` [1] document ::= ( prolog element Misc* ) - ( Char* RestrictedChar Char* ) ``` https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-prolog ``` [22] prolog ::= XMLDecl Misc* (doctypedecl Misc*)? ``` https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-XMLDecl ``` [23] XMLDecl ::= '<?xml' VersionInfo EncodingDecl? SDDecl? S? '?>' ``` See: ruby#161 (comment)
|
Thanks. |
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## Why? XML declaration must be the first item. https://www.w3.org/TR/2006/REC-xml11-20060816/#document ``` [1] document ::= ( prolog element Misc* ) - ( Char* RestrictedChar Char* ) ``` https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-prolog ``` [22] prolog ::= XMLDecl Misc* (doctypedecl Misc*)? ``` https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-XMLDecl ``` [23] XMLDecl ::= '<?xml' VersionInfo EncodingDecl? SDDecl? S? '?>' ``` See: #161 (comment)
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Why?
XML with additional content at the end of the document is invalid.
https://www.w3.org/TR/2006/REC-xml11-20060816/#document
https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-Misc
https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-PI
https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-PITarget