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docs and strings

This commit is contained in:
Vítor Santos Costa 2016-01-06 12:43:51 +00:00
parent e315217f0e
commit f6c5a2eea1
7 changed files with 2420 additions and 2372 deletions
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180
packages/xml/xml.pl
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@ -1,86 +1,104 @@
/* xml.pl : XML Module wrapper for Quintus Prolog.
*
* Copyright (C) 2001-2005 Binding Time Limited
* Copyright (C) 2005-2011 John Fletcher
*
* Current Release: $Revision: 3.3 $
*
* TERMS AND CONDITIONS:
*
* This program is offered free of charge, as unsupported source code. You may
* use it, copy it, distribute it, modify it or sell it without restriction,
* but entirely at your own risk.
*
*/
:- module( xml,
[
xml_parse/2,
xml_parse/3,
xml_subterm/2,
xml_pp/1
] ).
/* xml is intended to be a rather modular module: it should be easy to
* build a program that can output XML, but not read it, or vice versa.
* Similarly, you may be happy to dispense with diagnosis once you are
* sure that your code will only try to make valid calls to xml_parse/2.
*
* It is intended that the code should be very portable too. Clearly,
* some small changes will be needed between platforms, but these should
* be limited to xml_utilities. xml_utilities contains most of the shared
* code and most of the potentially non-portable code.
*/
/* xml.pl : XML Module wrapper for Quintus Prolog.
*
* Copyright (C) 2001-2005 Binding Time Limited
* Copyright (C) 2005-2011 John Fletcher
*
* Current Release: $Revision: 3.3 $
*
* TERMS AND CONDITIONS:
*
* This program is offered free of charge, as unsupported source code. You may
* use it, copy it, distribute it, modify it or sell it without restriction,
* but entirely at your own risk.
*
*/
:- module( xml,
[
xml_parse/2,
xml_parse/3,
xml_subterm/2,
xml_pp/1,
load_xml/3,
load_xml/2
] ).
:- use_module( library(lists), [append/3] ).
/* @section xml Prolog XML module
* xml is intended to be a rather modular module: it should be easy to
* build a program that can output XML, but not read it, or vice versa.
* Similarly, you may be happy to dispense with diagnosis once you are
* sure that your code will only try to make valid calls to xml_parse/2.
*
* It is intended that the code should be very portable too. Clearly,
* some small changes will be needed between platforms, but these should
* be limited to xml_utilities. xml_utilities contains most of the shared
* code and most of the potentially non-portable code.
*/
:- use_module( library(lists), [append/3] ).
:- use_module( library(readutil) ).
:- ensure_loaded( xml/xml_driver ).
:- ensure_loaded( xml/xml_driver ).
/* atom_codes/2, number_codes/2 and throw/1 are ISO predicates, mapped to
* the Quintus equivalent here.
*/
%atom_codes( Atom, Codes ) :-
% atom_chars( Atom, Codes ).
%number_codes( Number, Codes ) :-
% number_chars( Number, Codes ).
/* xml_exception( +Message, +Document, +Culprit, +Path ) is a hook to
* raise an exception to be raised in respect of a fault in the XML Term:
* Document.
* - Culprit is a sub-term of Document which cannot be serialized;
* - Message is an atom naming the type of error;
* - Path is a string encoding a list of SubTerm's ancestor elements in the
* form <tag>{(id)}* where <tag> is the element tag and <id> is the value
* of any attribute _named_ id.
*/
xml_exception( Message, Document, Culprit, Path ) :-
raise_exception(
application_error('XML Parse: ~s in ~q~nCulprit: ~q~nPath: ~s',
[Message,Document,Culprit,Path] )
).
/* member( ?Element, ?List ) holds when Element is a member of List.
*/
member( H, [H|_] ).
member( H, [_|T] ):-
member( H, T ).
/* select( ?Element, ?List0, ?List1 ) is true if List1 is equal to List0
* with Element removed.
*/
select( H, [H|T], T ).
select( Element, [H|T0], [H|T1] ):-
select( Element, T0, T1 ).
/* is_list( +List ) holds when List is a list.
*/
%is_list( List ) :-
% nonvar( List ),
% is_list1( List ).
%is_list1( [] ).
%is_list1( [_|_] ).
/* atom_codes/2, number_codes/2 and throw/1 are ISO predicates, mapped to
* the Quintus equivalent here.
*/
%atom_codes( Atom, Codes ) :-
% atom_chars( Atom, Codes ).
%number_codes( Number, Codes ) :-
% number_chars( Number, Codes ).
/** @pred xml_exception( +Message, +Document, +Culprit, +Path )
* a hook to
* raise an exception to be raised in respect of a fault in the XML Term:
* Document.
* - Culprit is a sub-term of Document which cannot be serialized;
* - Message is an atom naming the type of error;
* - Path is a string encoding a list of SubTerm's ancestor elements in the
* form <tag>{(id)}* where <tag> is the element tag and <id> is the value
* of any attribute _named_ id.
*/
xml_exception( Message, Document, Culprit, Path ) :-
raise_exception(
application_error('XML Parse: ~s in ~q~nCulprit: ~q~nPath: ~s',
[Message,Document,Culprit,Path] )
).
load_xml(File, XML, []) :-
open( File, read, S),
read_stream_to_codes(S, Doc),
close(S),
xml_parse(Doc, XML).
load_xml(File, XML) :-
open( File, read, S),
read_stream_to_codes(S, Doc),
close(S),
xml_parse(Doc, XML).
/* member( ?Element, ?List ) holds when Element is a member of List.
*/
member( H, [H|_] ).
member( H, [_|T] ):-
member( H, T ).
/* select( ?Element, ?List0, ?List1 ) is true if List1 is equal to List0
* with Element removed.
*/
select( H, [H|T], T ).
select( Element, [H|T0], [H|T1] ):-
select( Element, T0, T1 ).
/* is_list( +List ) holds when List is a list.
*/
%is_list( List ) :-
% nonvar( List ),
% is_list1( List ).
%is_list1( [] ).
%is_list1( [_|_] ).

2237
packages/xml/xml_acquisition.pl
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171
packages/xml/xml_diagnosis.pl
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@ -1,84 +1,87 @@
/* xml_diagnosis.pl : XML exception diagnosis.
*
* Copyright (C) 2001-2005 Binding Time Limited
* Copyright (C) 2005-2011 John Fletcher
*
* Current Release: $Revision: 3.3 $
*
* TERMS AND CONDITIONS:
*
* This program is offered free of charge, as unsupported source code. You may
* use it, copy it, distribute it, modify it or sell it without restriction,
* but entirely at your own risk.
*/
:- ensure_loaded( xml_generation ).
/* xml_fault( +Term, +Indentation, ?SubTerm, ?Path, ?Message ) identifies SubTerm
* as a sub-term of Term which cannot be serialized after Indentation.
* Message is an atom naming the type of error; Path is a string encoding a
* list of SubTerm's ancestor elements in the form <tag>{(id)}* where <tag> is the
* element tag and <id> is the value of any attribute _named_ id.
*/
xml_fault( Term, _Indent, Term, [], "Illegal Variable" ) :-
var( Term ).
xml_fault( xml(Attributes,_Content), _Indent, Term, [], Message ) :-
member( Attribute, Attributes ),
attribute_fault( Attribute, Term, Message ).
xml_fault( xml(_Attributes,Content), Indent, Culprit, Path, Message ) :-
xml_content_fault( Content, Indent, Culprit, Path, Message ).
xml_fault( Term, _Indent, Term, [], "Illegal Term" ).
xml_content_fault( Term, _Indent, Term, [], "Illegal Variable" ) :-
var( Term ).
xml_content_fault( pcdata(Chars), _Indent, Chars, [], "Invalid Character Data" ) :-
\+ is_chars( Chars ).
xml_content_fault( cdata(Chars), _Indent, Chars, [], "Invalid Character Data" ) :-
\+ is_chars( Chars ).
xml_content_fault( [H|_T], Indent, Culprit, Path, Message ) :-
xml_content_fault( H, Indent, Culprit, Path, Message ).
xml_content_fault( [_H|T], Indent, Culprit, Path, Message ) :-
xml_content_fault( T, Indent, Culprit, Path, Message ).
xml_content_fault( namespace(_URI,_Prefix,Element), Indent, Culprit, Path, Message ) :-
element_fault( Element, [0' |Indent], Culprit, Path, Message ).
xml_content_fault( Element, Indent, Culprit, Path, Message ) :-
element_fault( Element, [0' |Indent], Culprit, Path, Message ).
xml_content_fault( Term, Indent, Term, [], "Illegal Term" ) :-
\+ generation(Term, "", false, Indent, _Format, _Plus, _Minus ).
element_fault( element(Tag, _Attributes, _Contents), _Indent, Tag, [], "Tag must be an atom" ) :-
\+ atom( Tag ).
element_fault( element(Tag, Attributes, _Contents), _Indent, Tag, [], "Attributes must be instantiated" ) :-
var( Attributes ).
element_fault( element(Tag, Attributes, _Contents), _Indent, Faulty, Path, Message ) :-
fault_path( Tag, Attributes, Path, [] ),
member( Attribute, Attributes ),
attribute_fault( Attribute, Faulty, Message ).
element_fault( element(Tag, Attributes, Contents), Indent, Culprit, Path, Message ) :-
fault_path( Tag, Attributes, Path, Path1 ),
xml_content_fault( Contents, Indent, Culprit, Path1, Message ).
attribute_fault( Attribute, Attribute, "Illegal Variable" ) :-
var( Attribute ).
attribute_fault( Name=Value, Name=Value, "Attribute Name must be atom" ) :-
\+ atom(Name).
attribute_fault( Name=Value, Name=Value, "Attribute Value must be chars" ) :-
\+ is_chars( Value ).
attribute_fault( Attribute, Attribute, "Malformed Attribute" ) :-
\+ Attribute = (_Name=_Value).
is_chars( Chars ) :-
is_list( Chars ),
\+ (member( Char, Chars ), \+ (integer(Char), Char >=0, Char =< 255)).
fault_path( Tag, Attributes ) -->
{atom_codes( Tag, Chars )},
chars( Chars ),
fault_id( Attributes ),
" ".
fault_id( Attributes ) -->
{member( id=Chars, Attributes ), is_chars( Chars )},
!,
"(", chars(Chars), ")".
fault_id( _Attributes ) --> "".
/* xml_diagnosis.pl : XML exception diagnosis.
*
* Copyright (C) 2001-2005 Binding Time Limited
* Copyright (C) 2005-2011 John Fletcher
*
* Current Release: $Revision: 3.3 $
*
* TERMS AND CONDITIONS:
*
* This program is offered free of charge, as unsupported source code. You may
* use it, copy it, distribute it, modify it or sell it without restriction,
* but entirely at your own risk.
*/
:- ensure_loaded( xml_generation ).
/* @pred xml_fault( +Term, +Indentation, ?SubTerm, ?Path, ?Message )
*
* identifies SubTerm
* as a sub-term of Term which cannot be serialized after Indentation.
* Message is an atom naming the type of error; Path is a string encoding a
* list of SubTerm's ancestor elements in the form <tag>{(id)}* where <tag> is the
* element tag and <id> is the value of any attribute _named_ id.
*/
xml_fault( Term, _Indent, Term, [], "Illegal Variable" ) :-
var( Term ).
xml_fault( xml(Attributes,_Content), _Indent, Term, [], Message ) :-
member( Attribute, Attributes ),
attribute_fault( Attribute, Term, Message ).
xml_fault( xml(_Attributes,Content), Indent, Culprit, Path, Message ) :-
xml_content_fault( Content, Indent, Culprit, Path, Message ).
xml_fault( Term, _Indent, Term, [], "Illegal Term" ).
xml_content_fault( Term, _Indent, Term, [], "Illegal Variable" ) :-
var( Term ).
xml_content_fault( pcdata(Chars), _Indent, Chars, [], "Invalid Character Data" ) :-
\+ is_chars( Chars ).
xml_content_fault( cdata(Chars), _Indent, Chars, [], "Invalid Character Data" ) :-
\+ is_chars( Chars ).
xml_content_fault( [H|_T], Indent, Culprit, Path, Message ) :-
xml_content_fault( H, Indent, Culprit, Path, Message ).
xml_content_fault( [_H|T], Indent, Culprit, Path, Message ) :-
xml_content_fault( T, Indent, Culprit, Path, Message ).
xml_content_fault( namespace(_URI,_Prefix,Element), Indent, Culprit, Path, Message ) :-
element_fault( Element, [0' |Indent], Culprit, Path, Message ).
xml_content_fault( Element, Indent, Culprit, Path, Message ) :-
element_fault( Element, [0' |Indent], Culprit, Path, Message ).
xml_content_fault( Term, Indent, Term, [], "Illegal Term" ) :-
\+ generation(Term, "", false, Indent, _Format, _Plus, _Minus ).
element_fault( element(Tag, _Attributes, _Contents), _Indent, Tag, [], "Tag must be an atom" ) :-
\+ atom( Tag ).
element_fault( element(Tag, Attributes, _Contents), _Indent, Tag, [], "Attributes must be instantiated" ) :-
var( Attributes ).
element_fault( element(Tag, Attributes, _Contents), _Indent, Faulty, Path, Message ) :-
fault_path( Tag, Attributes, Path, [] ),
member( Attribute, Attributes ),
attribute_fault( Attribute, Faulty, Message ).
element_fault( element(Tag, Attributes, Contents), Indent, Culprit, Path, Message ) :-
fault_path( Tag, Attributes, Path, Path1 ),
xml_content_fault( Contents, Indent, Culprit, Path1, Message ).
attribute_fault( Attribute, Attribute, "Illegal Variable" ) :-
var( Attribute ).
attribute_fault( Name=Value, Name=Value, "Attribute Name must be atom" ) :-
\+ atom(Name).
attribute_fault( Name=Value, Name=Value, "Attribute Value must be chars" ) :-
\+ is_chars( Value ).
attribute_fault( Attribute, Attribute, "Malformed Attribute" ) :-
\+ Attribute = (_Name=_Value).
is_chars( Chars ) :-
is_list( Chars ),
\+ (member( Char, Chars ), \+ (integer(Char), Char >=0, Char =< 255)).
fault_path( Tag, Attributes ) -->
{atom_codes( Tag, Chars )},
chars( Chars ),
fault_id( Attributes ),
" ".
fault_id( Attributes ) -->
{member( id=Chars, Attributes ), is_chars( Chars )},
!,
"(", chars(Chars), ")".
fault_id( _Attributes ) --> "".

13
packages/xml/xml_driver.pl
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@ -11,11 +11,15 @@
* This program is offered free of charge, as unsupported source code. You may
* use it, copy it, distribute it, modify it or sell it without restriction,
* but entirely at your own risk.
*/
/** @pred xml_parse( {+Controls}, +?Chars, ?+Document )
*
* xml_parse( {+Controls}, +?Chars, ?+Document ) parses Chars to/from a data
* parses Chars to/from a data
* structure of the form xml(<atts>, <content>). <atts> is a list of
* <atom>=<string> attributes from the (possibly implicit) XML signature of the
* document. <content> is a (possibly empty) list comprising occurrences of * ~~~
* document. <content> is a (possibly empty) list comprising occurrences of
* ~~~
* pcdata(<string>) : Text
* comment(<string>) : An xml comment;
* element(<tag>,<atts>,<content>) : <tag>..</tag> encloses <content>
@ -75,7 +79,7 @@
* is not well-formed, diagnosis tries to identify the specific culprit term.
*/
:- module( xml, [xml_parse/2,
:- module( xml_driver, [xml_parse/2,
xml_parse/3,
document_to_xml/3,
xml_subterm/2
@ -105,7 +109,8 @@ document_to_xml( Controls, Document, Chars ) :-
xml_exception( Message, Document, Culprit, Path )
).
/** xml_subterm( +XMLTerm, ?Subterm )
/** @pred xml_subterm( +XMLTerm, ?Subterm )
*
* unifies Subterm with a sub-term of Term.
* Note that XMLTerm is a sub-term of itself.
*/

781
packages/xml/xml_generation.pl
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@ -1,391 +1,394 @@
/* xml_generation.pl : Document -> XML translation
*
* Copyright (C) 2001-2005 Binding Time Limited
* Copyright (C) 2005-2011 John Fletcher
*
* Current Release: $Revision: 3.7 $
*
* TERMS AND CONDITIONS:
*
* This program is offered free of charge, as unsupported source code. You may
* use it, copy it, distribute it, modify it or sell it without restriction,
* but entirely at your own risk.
*/
:- ensure_loaded( xml_utilities ).
/* xml_generation.pl : Document -> XML translation
*
* Copyright (C) 2001-2005 Binding Time Limited
* Copyright (C) 2005-2011 John Fletcher
*
* Current Release: $Revision: 3.7 $
*
* TERMS AND CONDITIONS:
*
* This program is offered free of charge, as unsupported source code. You may
* use it, copy it, distribute it, modify it or sell it without restriction,
* but entirely at your own risk.
*/
:- ensure_loaded( xml_utilities ).
:- use_module(library(lists)).
/* document_generation( +Format, +Document ) is a DCG generating Document
* as a list of character codes. Format is true|false defining whether layouts,
* to provide indentation, should be added between the element content of
* the resultant "string". Note that formatting is disabled for elements that
* are interspersed with pcdata/1 terms, such as XHTML's 'inline' elements.
* Also, Format is over-ridden, for an individual element, by an explicit
* 'xml:space'="preserve" attribute.
*/
document_generation( Format, xml(Attributes, Document) ) -->
document_generation_body( Attributes, Format, Document ).
document_generation_body( [], Format, Document ) -->
generation( Document, "", Format, [], _Format1 ).
document_generation_body( Attributes, Format, Document ) -->
{ Attributes = [_|_],
xml_declaration_attributes_valid( Attributes )
},
"<?xml",
generated_attributes( Attributes, Format, Format0 ),
"?>",
indent( true, [] ),
generation( Document, "", Format0, [], _Format1 ).
generation( [], _Prefix, Format, _Indent, Format ) --> [].
generation( [Term|Terms], Prefix, Format0, Indent, Format ) -->
generation( Term, Prefix, Format0, Indent, Format1 ),
generation( Terms, Prefix, Format1, Indent, Format ).
generation( doctype(Name, External), _Prefix, Format, [], Format ) -->
"<!DOCTYPE ",
generated_name( Name ),
generated_external_id( External ),
">".
generation( instructions(Target,Process), _Prefix, Format, Indent, Format ) -->
indent( Format, Indent ),
"<?", generated_name(Target), " ", chars( Process ) ,"?>".
generation( pcdata(Chars), _Prefix, Format0, _Indent, Format1 ) -->
pcdata_generation( Chars ),
{character_data_format( Chars, Format0, Format1 )}.
generation( comment( Comment ), _Prefix, Format, Indent, Format ) -->
indent( Format, Indent ),
"<!--", chars( Comment ), "-->".
generation( namespace(URI, Prefix, element(Name, Atts, Content)),
_Prefix0, Format, Indent, Format ) -->
indent( Format, Indent ),
"<", generated_prefixed_name( Prefix, Name ),
generated_prefixed_attributes( Prefix, URI, Atts, Format, Format1 ),
generated_content( Content, Format1, Indent, Prefix, Name ).
generation( element(Name, Atts, Content), Prefix, Format, Indent, Format ) -->
indent( Format, Indent ),
"<", generated_prefixed_name( Prefix, Name ),
generated_attributes( Atts, Format, Format1 ),
generated_content( Content, Format1, Indent, Prefix, Name ).
generation( cdata(CData), _Prefix, Format0, _Indent, Format1 ) -->
"<![CDATA[", cdata_generation(CData), "]]>",
{character_data_format( CData, Format0, Format1 )}.
generated_attributes( [], Format, Format ) --> [].
generated_attributes( [Name=Value|Attributes], Format0, Format ) -->
{( Name == 'xml:space',
Value="preserve" ->
Format1 = false
; otherwise ->
Format1 = Format0
)},
" ",
generated_name( Name ),
"=""",
quoted_string( Value ),
"""",
generated_attributes( Attributes, Format1, Format ).
generated_prefixed_name( [], Name ) -->
generated_name( Name ).
generated_prefixed_name( Prefix, Name ) -->
{Prefix = [_|_]},
chars( Prefix ), ":",
generated_name( Name ).
generated_content( [], _Format, _Indent, _Prefix, _Namespace ) -->
" />". % Leave an extra space for XHTML output.
generated_content( [H|T], Format, Indent, Prefix, Namespace ) -->
">",
generation( H, Prefix, Format, [0' |Indent], Format1 ),
generation( T, Prefix, Format1, [0' |Indent], Format2 ),
indent( Format2, Indent ),
"</", generated_prefixed_name( Prefix, Namespace ), ">".
generated_prefixed_attributes( [_|_Prefix], _URI, Atts, Format0, Format ) -->
generated_attributes( Atts, Format0, Format ).
generated_prefixed_attributes( [], URI, Atts, Format0, Format ) -->
{atom_codes( URI, Namespace ),
findall( Attr, (member(Attr, Atts), \+ Attr=(xmlns=_Val)), Atts1 )
},
generated_attributes( [xmlns=Namespace|Atts1], Format0, Format ).
generated_name( Name, Plus, Minus ) :-
atom_codes( Name, Chars ),
append( Chars, Minus, Plus ).
generated_external_id( local ) --> "".
generated_external_id( local(Literals) ) --> " [",
generated_doctype_literals( Literals ), "
]".
generated_external_id( system(URL) ) -->
" SYSTEM """,
chars( URL ),
"""".
generated_external_id( system(URL,Literals) ) -->
" SYSTEM """,
chars( URL ),
""" [",
generated_doctype_literals( Literals ), "
]".
generated_external_id( public(URN,URL) ) -->
" PUBLIC """,
chars( URN ),
""" """,
chars( URL ),
"""".
generated_external_id( public(URN,URL,Literals) ) -->
" PUBLIC """,
chars( URN ),
""" """,
chars( URL ),
""" [",
generated_doctype_literals( Literals ), "
]".
generated_doctype_literals( [] ) --> "".
generated_doctype_literals( [dtd_literal(String)|Literals] ) --> "
<!", cdata_generation( String ), ">",
generated_doctype_literals( Literals ).
/* quoted_string( +Chars ) is a DCG representing Chars, a list of character
* codes, as a legal XML attribute string. Any leading or trailing layout
* characters are removed. &, " and < characters are replaced by &amp;, &quot;
* and &lt; respectively, .
*/
quoted_string( Raw, Plus, Minus ) :-
quoted_string1( Raw, NoLeadingLayouts ),
quoted_string2( NoLeadingLayouts, Layout, Layout, Plus, Minus ).
quoted_string1( [], [] ).
quoted_string1( [Char|Chars], NoLeadingLayouts ) :-
( Char > 32 ->
NoLeadingLayouts = [Char|Chars]
; otherwise ->
quoted_string1( Chars, NoLeadingLayouts )
).
quoted_string2( [], _LayoutPlus, _LayoutMinus, List, List ).
quoted_string2( [Char|Chars], LayoutPlus, LayoutMinus, Plus, Minus ) :-
( Char =< " " ->
Plus = Plus1,
LayoutMinus = [Char|LayoutMinus1],
LayoutPlus = LayoutPlus1
; Char == 34 ->
Plus = LayoutPlus,
escaped_quote( LayoutMinus, Plus1 ),
LayoutPlus1 = LayoutMinus1
; Char == 39 ->
Plus = LayoutPlus,
apos( LayoutMinus, Plus1 ),
LayoutPlus1 = LayoutMinus1
; Char =< 127 ->
Plus = LayoutPlus,
pcdata_7bit( Char, LayoutMinus, Plus1 ),
LayoutPlus1 = LayoutMinus1
; legal_xml_unicode( Char ) ->
Plus = LayoutPlus,
number_codes( Char, Codes ),
pcdata_8bits_plus( Codes, LayoutMinus, Plus1 ),
LayoutPlus1 = LayoutMinus1
; otherwise ->
LayoutPlus = LayoutPlus1,
LayoutMinus = LayoutMinus1,
Plus = Plus1
),
quoted_string2( Chars, LayoutPlus1, LayoutMinus1, Plus1, Minus ).
indent( false, _Indent ) --> [].
indent( true, Indent ) -->
[10],
chars( Indent ).
apos --> "&apos;".
escaped_quote --> "&quot;".
/* pcdata_generation( +Chars ) is a DCG representing Chars, a list of character
* codes as legal XML "Parsed character data" (PCDATA) string. Any codes
* which cannot be represented by a 7-bit character are replaced by their
* decimal numeric character entity e.g. code 160 (non-breaking space) is
* represented as &#160;. Any character codes disallowed by the XML
* specification are not encoded.
*/
pcdata_generation( [], Plus, Plus ).
pcdata_generation( [Char|Chars], Plus, Minus ) :-
( Char =< 127 ->
pcdata_7bit( Char, Plus, Mid )
; legal_xml_unicode( Char ) ->
number_codes( Char, Codes ),
pcdata_8bits_plus( Codes, Plus, Mid )
; otherwise ->
Plus = Mid
),
pcdata_generation( Chars, Mid, Minus ).
/* pcdata_7bit(+Char) represents the ascii character set in its
* simplest format, using the character entities &amp; &lt; and &gt;.
*/
pcdata_7bit( 0 ) --> "".
pcdata_7bit( 1 ) --> "".
pcdata_7bit( 2 ) --> "".
pcdata_7bit( 3 ) --> "".
pcdata_7bit( 4 ) --> "".
pcdata_7bit( 5 ) --> "".
pcdata_7bit( 6 ) --> "".
pcdata_7bit( 7 ) --> "".
pcdata_7bit( 8 ) --> "".
pcdata_7bit( 9 ) --> [9].
pcdata_7bit( 10 ) --> [10].
pcdata_7bit( 11 ) --> "".
pcdata_7bit( 12 ) --> "".
pcdata_7bit( 13 ) --> [13].
pcdata_7bit( 14 ) --> "".
pcdata_7bit( 15 ) --> "".
pcdata_7bit( 16 ) --> "".
pcdata_7bit( 17 ) --> "".
pcdata_7bit( 18 ) --> "".
pcdata_7bit( 19 ) --> "".
pcdata_7bit( 20 ) --> "".
pcdata_7bit( 21 ) --> "".
pcdata_7bit( 22 ) --> "".
pcdata_7bit( 23 ) --> "".
pcdata_7bit( 24 ) --> "".
pcdata_7bit( 25 ) --> "".
pcdata_7bit( 26 ) --> "".
pcdata_7bit( 27 ) --> "".
pcdata_7bit( 28 ) --> "".
pcdata_7bit( 29 ) --> "".
pcdata_7bit( 30 ) --> "".
pcdata_7bit( 31 ) --> "".
pcdata_7bit( 32 ) --> " ".
pcdata_7bit( 33 ) --> "!".
pcdata_7bit( 34 ) --> [34].
pcdata_7bit( 35 ) --> "#".
pcdata_7bit( 36 ) --> "$".
pcdata_7bit( 37 ) --> "%".
pcdata_7bit( 38 ) --> "&amp;".
pcdata_7bit( 39 ) --> "'".
pcdata_7bit( 40 ) --> "(".
pcdata_7bit( 41 ) --> ")".
pcdata_7bit( 42 ) --> "*".
pcdata_7bit( 43 ) --> "+".
pcdata_7bit( 44 ) --> ",".
pcdata_7bit( 45 ) --> "-".
pcdata_7bit( 46 ) --> ".".
pcdata_7bit( 47 ) --> "/".
pcdata_7bit( 48 ) --> "0".
pcdata_7bit( 49 ) --> "1".
pcdata_7bit( 50 ) --> "2".
pcdata_7bit( 51 ) --> "3".
pcdata_7bit( 52 ) --> "4".
pcdata_7bit( 53 ) --> "5".
pcdata_7bit( 54 ) --> "6".
pcdata_7bit( 55 ) --> "7".
pcdata_7bit( 56 ) --> "8".
pcdata_7bit( 57 ) --> "9".
pcdata_7bit( 58 ) --> ":".
pcdata_7bit( 59 ) --> ";".
pcdata_7bit( 60 ) --> "&lt;".
pcdata_7bit( 61 ) --> "=".
pcdata_7bit( 62 ) --> "&gt;". % escaping necessary to prevent ']]>' sequences in pcdata.
pcdata_7bit( 63 ) --> "?".
pcdata_7bit( 64 ) --> "@".
pcdata_7bit( 65 ) --> "A".
pcdata_7bit( 66 ) --> "B".
pcdata_7bit( 67 ) --> "C".
pcdata_7bit( 68 ) --> "D".
pcdata_7bit( 69 ) --> "E".
pcdata_7bit( 70 ) --> "F".
pcdata_7bit( 71 ) --> "G".
pcdata_7bit( 72 ) --> "H".
pcdata_7bit( 73 ) --> "I".
pcdata_7bit( 74 ) --> "J".
pcdata_7bit( 75 ) --> "K".
pcdata_7bit( 76 ) --> "L".
pcdata_7bit( 77 ) --> "M".
pcdata_7bit( 78 ) --> "N".
pcdata_7bit( 79 ) --> "O".
pcdata_7bit( 80 ) --> "P".
pcdata_7bit( 81 ) --> "Q".
pcdata_7bit( 82 ) --> "R".
pcdata_7bit( 83 ) --> "S".
pcdata_7bit( 84 ) --> "T".
pcdata_7bit( 85 ) --> "U".
pcdata_7bit( 86 ) --> "V".
pcdata_7bit( 87 ) --> "W".
pcdata_7bit( 88 ) --> "X".
pcdata_7bit( 89 ) --> "Y".
pcdata_7bit( 90 ) --> "Z".
pcdata_7bit( 91 ) --> "[".
pcdata_7bit( 92 ) --> [92].
pcdata_7bit( 93 ) --> "]".
pcdata_7bit( 94 ) --> "^".
pcdata_7bit( 95 ) --> "_".
pcdata_7bit( 96 ) --> "&#96;".
pcdata_7bit( 97 ) --> "a".
pcdata_7bit( 98 ) --> "b".
pcdata_7bit( 99 ) --> "c".
pcdata_7bit( 100 ) --> "d".
pcdata_7bit( 101 ) --> "e".
pcdata_7bit( 102 ) --> "f".
pcdata_7bit( 103 ) --> "g".
pcdata_7bit( 104 ) --> "h".
pcdata_7bit( 105 ) --> "i".
pcdata_7bit( 106 ) --> "j".
pcdata_7bit( 107 ) --> "k".
pcdata_7bit( 108 ) --> "l".
pcdata_7bit( 109 ) --> "m".
pcdata_7bit( 110 ) --> "n".
pcdata_7bit( 111 ) --> "o".
pcdata_7bit( 112 ) --> "p".
pcdata_7bit( 113 ) --> "q".
pcdata_7bit( 114 ) --> "r".
pcdata_7bit( 115 ) --> "s".
pcdata_7bit( 116 ) --> "t".
pcdata_7bit( 117 ) --> "u".
pcdata_7bit( 118 ) --> "v".
pcdata_7bit( 119 ) --> "w".
pcdata_7bit( 120 ) --> "x".
pcdata_7bit( 121 ) --> "y".
pcdata_7bit( 122 ) --> "z".
pcdata_7bit( 123 ) --> "{".
pcdata_7bit( 124 ) --> "|".
pcdata_7bit( 125 ) --> "}".
pcdata_7bit( 126 ) --> [126].
pcdata_7bit( 127 ) --> "&#127;".
pcdata_8bits_plus( Codes ) -->
"&#", chars( Codes ), ";".
/* character_data_format( +Chars, +Format0, ?Format1 ) holds when Format0 and
* Format1 are the statuses of XML formatting before and after Chars -
* which may be null.
*/
character_data_format( [], Format, Format ).
character_data_format( [_Char|_Chars], _Format, false ).
/* cdata_generation( +Chars ) is a DCG representing Chars, a list of character
* codes as a legal XML CDATA string. Any character codes disallowed by the XML
* specification are not encoded.
*/
cdata_generation( [] ) --> "".
cdata_generation( [Char|Chars] ) -->
( {legal_xml_unicode( Char )}, !, [Char]
; ""
),
cdata_generation( Chars ).
legal_xml_unicode( 9 ).
legal_xml_unicode( 10 ).
legal_xml_unicode( 13 ).
legal_xml_unicode( Code ) :-
Code >= 32,
Code =< 55295.
legal_xml_unicode( Code ) :-
Code >= 57344,
Code =< 65533.
legal_xml_unicode( Code ) :-
Code >= 65536,
Code =< 1114111.
/* @pred document_generation( +Format, +Document )
*
* is a DCG generating Document
* as a list of character codes. Format is true|false defining whether layouts,
* to provide indentation, should be added between the element content of
* the resultant "string". Note that formatting is disabled for elements that
* are interspersed with pcdata/1 terms, such as XHTML's 'inline' elements.
* Also, Format is over-ridden, for an individual element, by an explicit
* 'xml:space'="preserve" attribute.
*/
document_generation( Format, xml(Attributes, Document) ) -->
document_generation_body( Attributes, Format, Document ).
document_generation_body( [], Format, Document ) -->
generation( Document, "", Format, [], _Format1 ).
document_generation_body( Attributes, Format, Document ) -->
{ Attributes = [_|_],
xml_declaration_attributes_valid( Attributes )
},
"<?xml",
generated_attributes( Attributes, Format, Format0 ),
"?>",
indent( true, [] ),
generation( Document, "", Format0, [], _Format1 ).
generation( [], _Prefix, Format, _Indent, Format ) --> [].
generation( [Term|Terms], Prefix, Format0, Indent, Format ) -->
generation( Term, Prefix, Format0, Indent, Format1 ),
generation( Terms, Prefix, Format1, Indent, Format ).
generation( doctype(Name, External), _Prefix, Format, [], Format ) -->
"<!DOCTYPE ",
generated_name( Name ),
generated_external_id( External ),
">".
generation( instructions(Target,Process), _Prefix, Format, Indent, Format ) -->
indent( Format, Indent ),
"<?", generated_name(Target), " ", chars( Process ) ,"?>".
generation( pcdata(Chars), _Prefix, Format0, _Indent, Format1 ) -->
pcdata_generation( Chars ),
{character_data_format( Chars, Format0, Format1 )}.
generation( comment( Comment ), _Prefix, Format, Indent, Format ) -->
indent( Format, Indent ),
"<!--", chars( Comment ), "-->".
generation( namespace(URI, Prefix, element(Name, Atts, Content)),
_Prefix0, Format, Indent, Format ) -->
indent( Format, Indent ),
"<", generated_prefixed_name( Prefix, Name ),
generated_prefixed_attributes( Prefix, URI, Atts, Format, Format1 ),
generated_content( Content, Format1, Indent, Prefix, Name ).
generation( element(Name, Atts, Content), Prefix, Format, Indent, Format ) -->
indent( Format, Indent ),
"<", generated_prefixed_name( Prefix, Name ),
generated_attributes( Atts, Format, Format1 ),
generated_content( Content, Format1, Indent, Prefix, Name ).
generation( cdata(CData), _Prefix, Format0, _Indent, Format1 ) -->
"<![CDATA[", cdata_generation(CData), "]]>",
{character_data_format( CData, Format0, Format1 )}.
generated_attributes( [], Format, Format ) --> [].
generated_attributes( [Name=Value|Attributes], Format0, Format ) -->
{( Name == 'xml:space',
Value="preserve" ->
Format1 = false
; otherwise ->
Format1 = Format0
)},
" ",
generated_name( Name ),
"=""",
quoted_string( Value ),
"""",
generated_attributes( Attributes, Format1, Format ).
generated_prefixed_name( [], Name ) -->
generated_name( Name ).
generated_prefixed_name( Prefix, Name ) -->
{Prefix = [_|_]},
chars( Prefix ), ":",
generated_name( Name ).
generated_content( [], _Format, _Indent, _Prefix, _Namespace ) -->
" />". % Leave an extra space for XHTML output.
generated_content( [H|T], Format, Indent, Prefix, Namespace ) -->
">",
generation( H, Prefix, Format, [0' |Indent], Format1 ),
generation( T, Prefix, Format1, [0' |Indent], Format2 ),
indent( Format2, Indent ),
"</", generated_prefixed_name( Prefix, Namespace ), ">".
generated_prefixed_attributes( [_|_Prefix], _URI, Atts, Format0, Format ) -->
generated_attributes( Atts, Format0, Format ).
generated_prefixed_attributes( [], URI, Atts, Format0, Format ) -->
{atom_codes( URI, Namespace ),
findall( Attr, (member(Attr, Atts), \+ Attr=(xmlns=_Val)), Atts1 )
},
generated_attributes( [xmlns=Namespace|Atts1], Format0, Format ).
generated_name( Name, Plus, Minus ) :-
atom_codes( Name, Chars ),
append( Chars, Minus, Plus ).
generated_external_id( local ) --> "".
generated_external_id( local(Literals) ) --> " [",
generated_doctype_literals( Literals ), "
]".
generated_external_id( system(URL) ) -->
" SYSTEM """,
chars( URL ),
"""".
generated_external_id( system(URL,Literals) ) -->
" SYSTEM """,
chars( URL ),
""" [",
generated_doctype_literals( Literals ), "
]".
generated_external_id( public(URN,URL) ) -->
" PUBLIC """,
chars( URN ),
""" """,
chars( URL ),
"""".
generated_external_id( public(URN,URL,Literals) ) -->
" PUBLIC """,
chars( URN ),
""" """,
chars( URL ),
""" [",
generated_doctype_literals( Literals ), "
]".
generated_doctype_literals( [] ) --> "".
generated_doctype_literals( [dtd_literal(String)|Literals] ) --> "
<!", cdata_generation( String ), ">",
generated_doctype_literals( Literals ).
/* quoted_string( +Chars ) is a DCG representing Chars, a list of character
* codes, as a legal XML attribute string. Any leading or trailing layout
* characters are removed. &, " and < characters are replaced by &amp;, &quot;
* and &lt; respectively, .
*/
quoted_string( Raw, Plus, Minus ) :-
quoted_string1( Raw, NoLeadingLayouts ),
quoted_string2( NoLeadingLayouts, Layout, Layout, Plus, Minus ).
quoted_string1( [], [] ).
quoted_string1( [Char|Chars], NoLeadingLayouts ) :-
( Char > 32 ->
NoLeadingLayouts = [Char|Chars]
; otherwise ->
quoted_string1( Chars, NoLeadingLayouts )
).
quoted_string2( [], _LayoutPlus, _LayoutMinus, List, List ).
quoted_string2( [Char|Chars], LayoutPlus, LayoutMinus, Plus, Minus ) :-
( Char =< " " ->
Plus = Plus1,
LayoutMinus = [Char|LayoutMinus1],
LayoutPlus = LayoutPlus1
; Char == 34 ->
Plus = LayoutPlus,
escaped_quote( LayoutMinus, Plus1 ),
LayoutPlus1 = LayoutMinus1
; Char == 39 ->
Plus = LayoutPlus,
apos( LayoutMinus, Plus1 ),
LayoutPlus1 = LayoutMinus1
; Char =< 127 ->
Plus = LayoutPlus,
pcdata_7bit( Char, LayoutMinus, Plus1 ),
LayoutPlus1 = LayoutMinus1
; legal_xml_unicode( Char ) ->
Plus = LayoutPlus,
number_codes( Char, Codes ),
pcdata_8bits_plus( Codes, LayoutMinus, Plus1 ),
LayoutPlus1 = LayoutMinus1
; otherwise ->
LayoutPlus = LayoutPlus1,
LayoutMinus = LayoutMinus1,
Plus = Plus1
),
quoted_string2( Chars, LayoutPlus1, LayoutMinus1, Plus1, Minus ).
indent( false, _Indent ) --> [].
indent( true, Indent ) -->
[10],
chars( Indent ).
apos --> "&apos;".
escaped_quote --> "&quot;".
/* pcdata_generation( +Chars ) is a DCG representing Chars, a list of character
* codes as legal XML "Parsed character data" (PCDATA) string. Any codes
* which cannot be represented by a 7-bit character are replaced by their
* decimal numeric character entity e.g. code 160 (non-breaking space) is
* represented as &#160;. Any character codes disallowed by the XML
* specification are not encoded.
*/
pcdata_generation( [], Plus, Plus ).
pcdata_generation( [Char|Chars], Plus, Minus ) :-
( Char =< 127 ->
pcdata_7bit( Char, Plus, Mid )
; legal_xml_unicode( Char ) ->
number_codes( Char, Codes ),
pcdata_8bits_plus( Codes, Plus, Mid )
; otherwise ->
Plus = Mid
),
pcdata_generation( Chars, Mid, Minus ).
/* pcdata_7bit(+Char) represents the ascii character set in its
* simplest format, using the character entities &amp; &lt; and &gt;.
*/
pcdata_7bit( 0 ) --> "".
pcdata_7bit( 1 ) --> "".
pcdata_7bit( 2 ) --> "".
pcdata_7bit( 3 ) --> "".
pcdata_7bit( 4 ) --> "".
pcdata_7bit( 5 ) --> "".
pcdata_7bit( 6 ) --> "".
pcdata_7bit( 7 ) --> "".
pcdata_7bit( 8 ) --> "".
pcdata_7bit( 9 ) --> [9].
pcdata_7bit( 10 ) --> [10].
pcdata_7bit( 11 ) --> "".
pcdata_7bit( 12 ) --> "".
pcdata_7bit( 13 ) --> [13].
pcdata_7bit( 14 ) --> "".
pcdata_7bit( 15 ) --> "".
pcdata_7bit( 16 ) --> "".
pcdata_7bit( 17 ) --> "".
pcdata_7bit( 18 ) --> "".
pcdata_7bit( 19 ) --> "".
pcdata_7bit( 20 ) --> "".
pcdata_7bit( 21 ) --> "".
pcdata_7bit( 22 ) --> "".
pcdata_7bit( 23 ) --> "".
pcdata_7bit( 24 ) --> "".
pcdata_7bit( 25 ) --> "".
pcdata_7bit( 26 ) --> "".
pcdata_7bit( 27 ) --> "".
pcdata_7bit( 28 ) --> "".
pcdata_7bit( 29 ) --> "".
pcdata_7bit( 30 ) --> "".
pcdata_7bit( 31 ) --> "".
pcdata_7bit( 32 ) --> " ".
pcdata_7bit( 33 ) --> "!".
pcdata_7bit( 34 ) --> [34].
pcdata_7bit( 35 ) --> "#".
pcdata_7bit( 36 ) --> "$".
pcdata_7bit( 37 ) --> "%".
pcdata_7bit( 38 ) --> "&amp;".
pcdata_7bit( 39 ) --> "'".
pcdata_7bit( 40 ) --> "(".
pcdata_7bit( 41 ) --> ")".
pcdata_7bit( 42 ) --> "*".
pcdata_7bit( 43 ) --> "+".
pcdata_7bit( 44 ) --> ",".
pcdata_7bit( 45 ) --> "-".
pcdata_7bit( 46 ) --> ".".
pcdata_7bit( 47 ) --> "/".
pcdata_7bit( 48 ) --> "0".
pcdata_7bit( 49 ) --> "1".
pcdata_7bit( 50 ) --> "2".
pcdata_7bit( 51 ) --> "3".
pcdata_7bit( 52 ) --> "4".
pcdata_7bit( 53 ) --> "5".
pcdata_7bit( 54 ) --> "6".
pcdata_7bit( 55 ) --> "7".
pcdata_7bit( 56 ) --> "8".
pcdata_7bit( 57 ) --> "9".
pcdata_7bit( 58 ) --> ":".
pcdata_7bit( 59 ) --> ";".
pcdata_7bit( 60 ) --> "&lt;".
pcdata_7bit( 61 ) --> "=".
pcdata_7bit( 62 ) --> "&gt;". % escaping necessary to prevent ']]>' sequences in pcdata.
pcdata_7bit( 63 ) --> "?".
pcdata_7bit( 64 ) --> "@".
pcdata_7bit( 65 ) --> "A".
pcdata_7bit( 66 ) --> "B".
pcdata_7bit( 67 ) --> "C".
pcdata_7bit( 68 ) --> "D".
pcdata_7bit( 69 ) --> "E".
pcdata_7bit( 70 ) --> "F".
pcdata_7bit( 71 ) --> "G".
pcdata_7bit( 72 ) --> "H".
pcdata_7bit( 73 ) --> "I".
pcdata_7bit( 74 ) --> "J".
pcdata_7bit( 75 ) --> "K".
pcdata_7bit( 76 ) --> "L".
pcdata_7bit( 77 ) --> "M".
pcdata_7bit( 78 ) --> "N".
pcdata_7bit( 79 ) --> "O".
pcdata_7bit( 80 ) --> "P".
pcdata_7bit( 81 ) --> "Q".
pcdata_7bit( 82 ) --> "R".
pcdata_7bit( 83 ) --> "S".
pcdata_7bit( 84 ) --> "T".
pcdata_7bit( 85 ) --> "U".
pcdata_7bit( 86 ) --> "V".
pcdata_7bit( 87 ) --> "W".
pcdata_7bit( 88 ) --> "X".
pcdata_7bit( 89 ) --> "Y".
pcdata_7bit( 90 ) --> "Z".
pcdata_7bit( 91 ) --> "[".
pcdata_7bit( 92 ) --> [92].
pcdata_7bit( 93 ) --> "]".
pcdata_7bit( 94 ) --> "^".
pcdata_7bit( 95 ) --> "_".
pcdata_7bit( 96 ) --> "&#96;".
pcdata_7bit( 97 ) --> "a".
pcdata_7bit( 98 ) --> "b".
pcdata_7bit( 99 ) --> "c".
pcdata_7bit( 100 ) --> "d".
pcdata_7bit( 101 ) --> "e".
pcdata_7bit( 102 ) --> "f".
pcdata_7bit( 103 ) --> "g".
pcdata_7bit( 104 ) --> "h".
pcdata_7bit( 105 ) --> "i".
pcdata_7bit( 106 ) --> "j".
pcdata_7bit( 107 ) --> "k".
pcdata_7bit( 108 ) --> "l".
pcdata_7bit( 109 ) --> "m".
pcdata_7bit( 110 ) --> "n".
pcdata_7bit( 111 ) --> "o".
pcdata_7bit( 112 ) --> "p".
pcdata_7bit( 113 ) --> "q".
pcdata_7bit( 114 ) --> "r".
pcdata_7bit( 115 ) --> "s".
pcdata_7bit( 116 ) --> "t".
pcdata_7bit( 117 ) --> "u".
pcdata_7bit( 118 ) --> "v".
pcdata_7bit( 119 ) --> "w".
pcdata_7bit( 120 ) --> "x".
pcdata_7bit( 121 ) --> "y".
pcdata_7bit( 122 ) --> "z".
pcdata_7bit( 123 ) --> "{".
pcdata_7bit( 124 ) --> "|".
pcdata_7bit( 125 ) --> "}".
pcdata_7bit( 126 ) --> [126].
pcdata_7bit( 127 ) --> "&#127;".
pcdata_8bits_plus( Codes ) -->
"&#", chars( Codes ), ";".
/* character_data_format( +Chars, +Format0, ?Format1 ) holds when Format0 and
* Format1 are the statuses of XML formatting before and after Chars -
* which may be null.
*/
character_data_format( [], Format, Format ).
character_data_format( [_Char|_Chars], _Format, false ).
/* cdata_generation( +Chars ) is a DCG representing Chars, a list of character
* codes as a legal XML CDATA string. Any character codes disallowed by the XML
* specification are not encoded.
*/
cdata_generation( [] ) --> "".
cdata_generation( [Char|Chars] ) -->
( {legal_xml_unicode( Char )}, !, [Char]
; ""
),
cdata_generation( Chars ).
legal_xml_unicode( 9 ).
legal_xml_unicode( 10 ).
legal_xml_unicode( 13 ).
legal_xml_unicode( Code ) :-
Code >= 32,
Code =< 55295.
legal_xml_unicode( Code ) :-
Code >= 57344,
Code =< 65533.
legal_xml_unicode( Code ) :-
Code >= 65536,
Code =< 1114111.

399
packages/xml/xml_pp.pl
View File

@ -1,198 +1,201 @@
/* xml_pp: "pretty print" an XML Document on the current output stream.
*
* Copyright (C) 2001-2005 Binding Time Limited
* Copyright (C) 2005-2011 John Fletcher
*
* Current Release: $Revision: 3.3 $
*
* TERMS AND CONDITIONS:
*
* This program is offered free of charge, as unsupported source code. You may
* use it, copy it, distribute it, modify it or sell it without restriction,
* but entirely at your own risk.
*/
:- ensure_loaded( xml_utilities ).
/* xml_pp( +XMLDocument ) "pretty prints" XMLDocument on the current
* output stream.
*/
xml_pp( xml(Attributes, Document) ) :-
write( 'xml( ' ), pp_attributes( Attributes, 0 ), pp_comma, nl,
pp_list( Document, s(0) ),
write( ' ).' ), nl.
xml_pp( malformed(Attributes, Document) ) :-
write( 'malformed( ' ), pp_attributes( Attributes, 0 ), pp_comma, nl,
pp_list( Document, s(0) ),
write( ' ).' ), nl.
pp_indented( [], Indent ) :-
pp_indent( Indent), write( '[]' ).
pp_indented( List, Indent ) :-
List = [_|_],
pp_indent( Indent ),
pp_list( List, Indent ).
pp_indented( comment(Text), Indent ) :-
pp_indent( Indent ), write( 'comment(' ), pp_string(Text), write( ')' ).
pp_indented( namespace(URI,Prefix,Element), Indent ) :-
pp_indent( Indent ),
write( 'namespace( ' ), writeq( URI ), pp_comma_sp,
pp_string( Prefix ), pp_comma, nl,
pp_indented( Element, s(Indent) ), nl,
pp_indent( s(Indent) ), write( ')' ).
pp_indented( element(Tag,Attributes,Contents), Indent ) :-
pp_indent( Indent ), write( 'element( ' ), writeq( Tag ), pp_comma, nl,
pp_attributes( Attributes, s(Indent) ), pp_comma, nl,
pp_list( Contents, s(Indent) ), write( ' )' ).
pp_indented( instructions(Target, Processing), Indent ) :-
pp_indent( Indent ), write( 'instructions( ' ), writeq( Target ), pp_comma_sp,
pp_string(Processing), write( ')' ).
pp_indented( doctype(Name, DoctypeId), Indent ) :-
pp_indent( Indent ), write( 'doctype( ' ), writeq( Name ), pp_comma_sp,
pp_indented( DoctypeId, s(Indent) ), %'
write( ' )' ).
pp_indented( cdata(CData), Indent ) :-
pp_indent( Indent ), write( 'cdata(' ), pp_string(CData), write( ')' ).
pp_indented( pcdata(PCData), Indent ) :-
pp_indent( Indent ), write( 'pcdata(' ), pp_string(PCData), write( ')' ).
pp_indented( public(URN,URL), _Indent ) :-
write( 'public(' ), pp_string(URN), pp_comma_sp,
pp_string(URL), write( ')' ).
pp_indented( public(URN,URL,Literals), Indent ) :-
write( 'public(' ), pp_string(URN), pp_comma_sp,
pp_string(URL), pp_list( Literals, s(Indent) ), write( ')' ).
pp_indented( system(URL), _Indent ) :-
write( 'system(' ), pp_string(URL), write( ')' ).
pp_indented( system(URL,Literals), Indent ) :-
write( 'system(' ), pp_string(URL), pp_comma_sp,
pp_list( Literals, s(Indent) ), write( ')' ).
pp_indented( local, _Indent ) :-
write( local ).
pp_indented( local(Literals), Indent ) :-
write( 'local(' ), nl,
pp_list( Literals, s(Indent) ), write( ')' ).
pp_indented( dtd_literal(String), Indent ) :-
pp_indent( Indent ), write( 'dtd_literal(' ), pp_string(String), write( ')' ).
pp_indented( out_of_context(Tag), Indent ) :-
pp_indent( Indent ), write( '/* SYNTAX ERROR */ out_of_context( ' ),
writeq( Tag ), write( ' )' ).
pp_indented( unparsed(String), Indent ) :-
pp_indent( Indent ), write( '/* SYNTAX ERROR */ unparsed( ' ),
pp_string(String), write( ' )' ).
pp_list( [], Indent ) :-
pp_indent( Indent ), write( [] ).
pp_list( [H|T], Indent ) :-
pp_indent( Indent ), write( '[' ), nl,
pp_indented( H, Indent ),
pp_list1( T, Indent ),
pp_indent( Indent ), write( ']' ).
pp_list1( [], _Indent ) :-
nl.
pp_list1( [H|T], Indent ) :-
pp_comma, nl,
pp_indented( H, Indent ),
pp_list1( T, Indent ).
pp_attributes( [], Indent ) :-
pp_indent( Indent ), write( [] ).
pp_attributes( [Attribute|Attributes], Indent ) :-
pp_indent( Indent ), write( '[' ),
pp_attributes1( Attributes, Attribute ),
write( ']' ).
pp_attributes1( [], Name=Value ) :-
pp_name( Name ), pp_string( Value ).
pp_attributes1( [H|T], Name=Value ) :-
pp_name( Name ), pp_string( Value ), pp_comma_sp,
pp_attributes1( T, H ).
pp_name( Name ) :-
( possible_operator( Name ) ->
write( '(' ), write( Name ), write( ')=' )
; otherwise ->
writeq( Name ), write( '=' )
).
possible_operator( (abolish) ).
possible_operator( (attribute) ).
possible_operator( (check_advice) ).
possible_operator( (compile_command) ).
possible_operator( (delay) ).
possible_operator( (demon) ).
possible_operator( (discontiguous) ).
possible_operator( (div) ).
possible_operator( (do) ).
possible_operator( (document_export) ).
possible_operator( (document_import) ).
possible_operator( (dy) ).
possible_operator( (dynamic) ).
possible_operator( (edb) ).
possible_operator( (eexport) ).
possible_operator( (else) ).
possible_operator( (except) ).
possible_operator( (export) ).
possible_operator( (foreign_pred) ).
possible_operator( (from) ).
possible_operator( (from_chars) ).
possible_operator( (from_file) ).
possible_operator( (from_stream) ).
possible_operator( (global) ).
possible_operator( (help) ).
possible_operator( (hilog) ).
possible_operator( (if) ).
possible_operator( (import) ).
possible_operator( (index) ).
possible_operator( (initialization) ).
possible_operator( (is) ).
possible_operator( (listing) ).
possible_operator( (local) ).
possible_operator( (locked) ).
possible_operator( (meta_predicate) ).
possible_operator( (mod) ).
possible_operator( (mode) ).
possible_operator( (module_transparent) ).
possible_operator( (multifile) ).
possible_operator( (namic) ).
possible_operator( (nocheck_advice) ).
possible_operator( (nospy) ).
possible_operator( (not) ).
possible_operator( (of) ).
possible_operator( (once) ).
possible_operator( (onto_chars) ).
possible_operator( (onto_file) ).
possible_operator( (onto_stream) ).
possible_operator( (parallel) ).
possible_operator( (public) ).
possible_operator( (r) ).
possible_operator( (rem) ).
possible_operator( (skipped) ).
possible_operator( (spy) ).
possible_operator( (table) ).
possible_operator( (then) ).
possible_operator( (thread_local) ).
possible_operator( (ti) ).
possible_operator( (ti_off) ).
possible_operator( (traceable) ).
possible_operator( (unskipped) ).
possible_operator( (untraceable) ).
possible_operator( (use_subsumptive_tabling) ).
possible_operator( (use_variant_tabling) ).
possible_operator( (volatile) ).
possible_operator( (with) ).
possible_operator( (with_input_from_chars) ).
possible_operator( (with_output_to_chars) ).
possible_operator( (xor) ).
pp_indent( 0 ).
pp_indent( s(N) ) :-
write( ' ' ),
pp_indent( N ).
pp_comma :-
write( ',' ).
pp_comma_sp :-
write( ', ' ).
/* xml_pp: "pretty print" an XML Document on the current output stream.
*
* Copyright (C) 2001-2005 Binding Time Limited
* Copyright (C) 2005-2011 John Fletcher
*
* Current Release: $Revision: 3.3 $
*
* TERMS AND CONDITIONS:
*
* This program is offered free of charge, as unsupported source code. You may
* use it, copy it, distribute it, modify it or sell it without restriction,
* but entirely at your own risk.
*/
:- ensure_loaded( xml_utilities ).
/** xml_pp( +XMLDocument )
*
* "pretty prints" XMLDocument on the current
* output stream.
*/
xml_pp( xml(Attributes, Document) ) :-
write( 'xml( ' ), pp_attributes( Attributes, 0 ), pp_comma, nl,
pp_list( Document, s(0) ),
write( ' ).' ), nl.
xml_pp( malformed(Attributes, Document) ) :-
write( 'malformed( ' ), pp_attributes( Attributes, 0 ), pp_comma, nl,
pp_list( Document, s(0) ),
write( ' ).' ), nl.
pp_indented( [], Indent ) :-
pp_indent( Indent), write( '[]' ).
pp_indented( List, Indent ) :-
List = [_|_],
pp_indent( Indent ),
pp_list( List, Indent ).
pp_indented( comment(Text), Indent ) :-
pp_indent( Indent ), write( 'comment(' ), pp_string(Text), write( ')' ).
pp_indented( namespace(URI,Prefix,Element), Indent ) :-
pp_indent( Indent ),
write( 'namespace( ' ), writeq( URI ), pp_comma_sp,
pp_string( Prefix ), pp_comma, nl,
pp_indented( Element, s(Indent) ), nl,
pp_indent( s(Indent) ), write( ')' ).
pp_indented( element(Tag,Attributes,Contents), Indent ) :-
pp_indent( Indent ), write( 'element( ' ), writeq( Tag ), pp_comma, nl,
pp_attributes( Attributes, s(Indent) ), pp_comma, nl,
pp_list( Contents, s(Indent) ), write( ' )' ).
pp_indented( instructions(Target, Processing), Indent ) :-
pp_indent( Indent ), write( 'instructions( ' ), writeq( Target ), pp_comma_sp,
pp_string(Processing), write( ')' ).
pp_indented( doctype(Name, DoctypeId), Indent ) :-
pp_indent( Indent ), write( 'doctype( ' ), writeq( Name ), pp_comma_sp,
pp_indented( DoctypeId, s(Indent) ), %'
write( ' )' ).
pp_indented( cdata(CData), Indent ) :-
pp_indent( Indent ), write( 'cdata(' ), pp_string(CData), write( ')' ).
pp_indented( pcdata(PCData), Indent ) :-
pp_indent( Indent ), write( 'pcdata(' ), pp_string(PCData), write( ')' ).
pp_indented( public(URN,URL), _Indent ) :-
write( 'public(' ), pp_string(URN), pp_comma_sp,
pp_string(URL), write( ')' ).
pp_indented( public(URN,URL,Literals), Indent ) :-
write( 'public(' ), pp_string(URN), pp_comma_sp,
pp_string(URL), pp_list( Literals, s(Indent) ), write( ')' ).
pp_indented( system(URL), _Indent ) :-
write( 'system(' ), pp_string(URL), write( ')' ).
pp_indented( system(URL,Literals), Indent ) :-
write( 'system(' ), pp_string(URL), pp_comma_sp,
pp_list( Literals, s(Indent) ), write( ')' ).
pp_indented( local, _Indent ) :-
write( local ).
pp_indented( local(Literals), Indent ) :-
write( 'local(' ), nl,
pp_list( Literals, s(Indent) ), write( ')' ).
pp_indented( dtd_literal(String), Indent ) :-
pp_indent( Indent ), write( 'dtd_literal(' ), pp_string(String), write( ')' ).
pp_indented( out_of_context(Tag), Indent ) :-
pp_indent( Indent ), write( '/* SYNTAX ERROR */ out_of_context( ' ),
writeq( Tag ), write( ' )' ).
pp_indented( unparsed(String), Indent ) :-
pp_indent( Indent ), write( '/* SYNTAX ERROR */ unparsed( ' ),
pp_string(String), write( ' )' ).
pp_list( [], Indent ) :-
pp_indent( Indent ), write( [] ).
pp_list( [H|T], Indent ) :-
pp_indent( Indent ), write( '[' ), nl,
pp_indented( H, Indent ),
pp_list1( T, Indent ),
pp_indent( Indent ), write( ']' ).
pp_list1( [], _Indent ) :-
nl.
pp_list1( [H|T], Indent ) :-
pp_comma, nl,
pp_indented( H, Indent ),
pp_list1( T, Indent ).
pp_attributes( [], Indent ) :-
pp_indent( Indent ), write( [] ).
pp_attributes( [Attribute|Attributes], Indent ) :-
pp_indent( Indent ), write( '[' ),
pp_attributes1( Attributes, Attribute ),
write( ']' ).
pp_attributes1( [], Name=Value ) :-
pp_name( Name ), pp_string( Value ).
pp_attributes1( [H|T], Name=Value ) :-
pp_name( Name ), pp_string( Value ), pp_comma_sp,
pp_attributes1( T, H ).
pp_name( Name ) :-
( possible_operator( Name ) ->
write( '(' ), write( Name ), write( ')=' )
; otherwise ->
writeq( Name ), write( '=' )
).
possible_operator( (abolish) ).
possible_operator( (attribute) ).
possible_operator( (check_advice) ).
possible_operator( (compile_command) ).
possible_operator( (delay) ).
possible_operator( (demon) ).
possible_operator( (discontiguous) ).
possible_operator( (div) ).
possible_operator( (do) ).
possible_operator( (document_export) ).
possible_operator( (document_import) ).
possible_operator( (dy) ).
possible_operator( (dynamic) ).
possible_operator( (edb) ).
possible_operator( (eexport) ).
possible_operator( (else) ).
possible_operator( (except) ).
possible_operator( (export) ).
possible_operator( (foreign_pred) ).
possible_operator( (from) ).
possible_operator( (from_chars) ).
possible_operator( (from_file) ).
possible_operator( (from_stream) ).
possible_operator( (global) ).
possible_operator( (help) ).
possible_operator( (hilog) ).
possible_operator( (if) ).
possible_operator( (import) ).
possible_operator( (index) ).
possible_operator( (initialization) ).
possible_operator( (is) ).
possible_operator( (listing) ).
possible_operator( (local) ).
possible_operator( (locked) ).
possible_operator( (meta_predicate) ).
possible_operator( (mod) ).
possible_operator( (mode) ).
possible_operator( (module_transparent) ).
possible_operator( (multifile) ).
possible_operator( (namic) ).
possible_operator( (nocheck_advice) ).
possible_operator( (nospy) ).
possible_operator( (not) ).
possible_operator( (of) ).
possible_operator( (once) ).
possible_operator( (onto_chars) ).
possible_operator( (onto_file) ).
possible_operator( (onto_stream) ).
possible_operator( (parallel) ).
possible_operator( (public) ).
possible_operator( (r) ).
possible_operator( (rem) ).
possible_operator( (skipped) ).
possible_operator( (spy) ).
possible_operator( (table) ).
possible_operator( (then) ).
possible_operator( (thread_local) ).
possible_operator( (ti) ).
possible_operator( (ti_off) ).
possible_operator( (traceable) ).
possible_operator( (unskipped) ).
possible_operator( (untraceable) ).
possible_operator( (use_subsumptive_tabling) ).
possible_operator( (use_variant_tabling) ).
possible_operator( (volatile) ).
possible_operator( (with) ).
possible_operator( (with_input_from_chars) ).
possible_operator( (with_output_to_chars) ).
possible_operator( (xor) ).
pp_indent( 0 ).
pp_indent( s(N) ) :-
write( ' ' ),
pp_indent( N ).
pp_comma :-
write( ',' ).
pp_comma_sp :-
write( ', ' ).

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packages/xml/xml_utilities.pl
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