1349 lines
41 KiB
EmacsLisp
1349 lines
41 KiB
EmacsLisp
;;; ebnf-dtd.el --- parser for DTD (Data Type Description for XML) -*- lexical-binding: t; -*-
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;; Copyright (C) 2001-2024 Free Software Foundation, Inc.
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;; Author: Vinicius Jose Latorre <viniciusjl.gnu@gmail.com>
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;; Keywords: text, ebnf, PostScript
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;; Old-Version: 1.1
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;; Package: ebnf2ps
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;
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;;
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;; This is part of ebnf2ps package.
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;;
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;; This package defines a parser for DTD (Data Type Description for XML).
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;;
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;; See ebnf2ps.el for documentation.
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;;
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;;
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;; DTD Syntax
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;; ----------
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;;
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;; See the URLs:
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;; `https://www.w3.org/TR/2004/REC-xml-20040204/'
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;; (Extensible Markup Language (XML) 1.0 (Third Edition))
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;; `https://www.w3.org/TR/html40/'
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;; (HTML 4.01 Specification)
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;; `https://www.w3.org/TR/NOTE-html-970421'
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;; (HTML DTD with support for Style Sheets)
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;;
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;;
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;; /* Document */
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;;
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;; document ::= prolog element Misc*
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;; /* Note that *only* the prolog will be parsed */
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;;
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;;
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;; /* Characters */
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;;
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;; Char ::= #x9 | #xA | #xD
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;; | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]
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;; /* any Unicode character, excluding the surrogate blocks, FFFE, and FFFF. */
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;;
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;; /* NOTE:
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;;
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;; Document authors are encouraged to avoid "compatibility characters", as
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;; defined in section 6.8 of [Unicode] (see also D21 in section 3.6 of
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;; [Unicode3]). The characters defined in the following ranges are also
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;; discouraged. They are either control characters or permanently undefined
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;; Unicode characters:
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;;
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;; [#x7F-#x84], [#x86-#x9F], [#xFDD0-#xFDDF],
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;; [#1FFFE-#x1FFFF], [#2FFFE-#x2FFFF], [#3FFFE-#x3FFFF],
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;; [#4FFFE-#x4FFFF], [#5FFFE-#x5FFFF], [#6FFFE-#x6FFFF],
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;; [#7FFFE-#x7FFFF], [#8FFFE-#x8FFFF], [#9FFFE-#x9FFFF],
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;; [#AFFFE-#xAFFFF], [#BFFFE-#xBFFFF], [#CFFFE-#xCFFFF],
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;; [#DFFFE-#xDFFFF], [#EFFFE-#xEFFFF], [#FFFFE-#xFFFFF],
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;; [#10FFFE-#x10FFFF]. */
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;;
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;;
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;; /* White Space */
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;;
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;; S ::= (#x20 | #x9 | #xD | #xA)+
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;;
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;;
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;; /* Names and Tokens */
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;;
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;; NameChar ::= Letter | Digit | '.' | '-' | '_' | ':'
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;; | CombiningChar | Extender
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;;
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;; Name ::= (Letter | '_' | ':') (NameChar)*
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;;
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;; Names ::= Name (#x20 Name)*
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;;
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;; Nmtoken ::= (NameChar)+
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;;
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;; Nmtokens ::= Nmtoken (#x20 Nmtoken)*
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;;
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;;
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;; /* Literals */
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;;
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;; EntityValue ::= '"' ([^%&"] | PEReference | Reference)* '"'
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;; | "'" ([^%&'] | PEReference | Reference)* "'"
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;;
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;; AttValue ::= '"' ([^<&"] | Reference)* '"'
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;; | "'" ([^<&'] | Reference)* "'"
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;;
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;; SystemLiteral ::= ('"' [^"]* '"')
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;; | ("'" [^']* "'")
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;;
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;; PubidLiteral ::= '"' PubidChar* '"'
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;; | "'" (PubidChar - "'")* "'"
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;;
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;; PubidChar ::= #x20 | #xD | #xA | [a-zA-Z0-9] | [-'()+,./:=?;!*#@$_%]
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;;
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;; /* NOTE:
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;;
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;; Although the EntityValue production allows the definition of a general
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;; entity consisting of a single explicit < in the literal (e.g., <!ENTITY
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;; mylt "<">), it is strongly advised to avoid this practice since any
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;; reference to that entity will cause a well-formedness error. */
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;;
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;;
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;; /* Character Data */
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;;
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;; CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*)
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;;
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;;
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;; /* Comments */
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;;
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;; Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
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;;
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;;
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;; /* Processing Instructions */
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;;
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;; PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>'
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;;
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;; PITarget ::= Name - (('X' | 'x') ('M' | 'm') ('L' | 'l'))
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;;
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;;
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;; /* CDATA Sections */
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;;
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;; CDSect ::= CDStart CData CDEnd
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;;
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;; CDStart ::= '<![CDATA['
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;;
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;; CData ::= (Char* - (Char* ']]>' Char*))
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;;
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;; CDEnd ::= ']]>'
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;;
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;;
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;; /* Prolog */
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;;
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;; prolog ::= XMLDecl? Misc* (doctypedecl Misc*)?
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;;
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;; XMLDecl ::= '<?xml' VersionInfo EncodingDecl? SDDecl? S? '?>'
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;;
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;; VersionInfo ::= S 'version' Eq ("'" VersionNum "'" | '"' VersionNum '"')
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;;
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;; Eq ::= S? '=' S?
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;;
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;; VersionNum ::= '1.0'
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;;
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;; Misc ::= Comment | PI | S
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;;
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;;
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;; /* Document Type Definition */
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;;
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;; doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S?
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;; ('[' intSubset ']' S?)? '>'
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;; [VC: Root Element Type]
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;; [WFC: External Subset]
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;;
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;; DeclSep ::= PEReference | S
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;; [WFC: PE Between Declarations]
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;;
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;; intSubset ::= (markupdecl | DeclSep)*
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;;
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;; markupdecl ::= elementdecl | AttlistDecl | EntityDecl
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;; | NotationDecl | PI | Comment
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;; [VC: Proper Declaration/PE Nesting]
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;; [WFC: PEs in Internal Subset]
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;;
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;;
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;; /* External Subset */
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;;
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;; extSubset ::= TextDecl? extSubsetDecl
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;;
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;; extSubsetDecl ::= ( markupdecl | conditionalSect | DeclSep)*
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;;
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;;
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;; /* Standalone Document Declaration */
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;;
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;; SDDecl ::= S 'standalone' Eq
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;; (("'" ('yes' | 'no') "'") | ('"' ('yes' | 'no') '"'))
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;; [VC: Standalone Document Declaration]
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;;
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;;
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;; /* Element */
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;;
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;; element ::= EmptyElemTag | STag content ETag
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;; [WFC: Element Type Match]
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;; [VC: Element Valid]
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;;
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;;
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;; /* Start-tag */
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;;
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;; STag ::= '<' Name (S Attribute)* S? '>'
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;; [WFC: Unique Att Spec]
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;;
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;; Attribute ::= Name Eq AttValue
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;; [VC: Attribute Value Type]
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;; [WFC: No External Entity References]
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;; [WFC: No < in Attribute Values]
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;;
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;;
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;; /* End-tag */
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;;
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;; ETag ::= '</' Name S? '>'
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;;
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;;
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;; /* Content of Elements */
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;;
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;; content ::= CharData?
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;; ((element | Reference | CDSect | PI | Comment) CharData?)*
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;;
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;;
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;; /* Tags for Empty Elements */
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;;
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;; EmptyElemTag ::= '<' Name (S Attribute)* S? '/>'
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;; [WFC: Unique Att Spec]
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;;
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;;
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;; /* Element Type Declaration */
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;;
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;; elementdecl ::= '<!ELEMENT' S Name S contentspec S? '>'
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;; [VC: Unique Element Type Declaration]
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;;
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;; contentspec ::= 'EMPTY' | 'ANY' | Mixed | children
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;;
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;;
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;; /* Element-content Models */
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;;
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;; children ::= (choice | seq) ('?' | '*' | '+')?
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;;
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;; cp ::= (Name | choice | seq) ('?' | '*' | '+')?
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;;
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;; choice ::= '(' S? cp ( S? '|' S? cp )+ S? ')'
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;; [VC: Proper Group/PE Nesting]
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;;
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;; seq ::= '(' S? cp ( S? ',' S? cp )* S? ')'
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;; [VC: Proper Group/PE Nesting]
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;;
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;;
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;; /* Mixed-content Declaration */
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;;
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;; Mixed ::= '(' S? '#PCDATA' (S? '|' S? Name)* S? ')*'
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;; | '(' S? '#PCDATA' S? ')'
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;; [VC: Proper Group/PE Nesting]
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;; [VC: No Duplicate Types]
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;;
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;;
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;; /* Attribute-list Declaration */
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;;
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;; AttlistDecl ::= '<!ATTLIST' S Name AttDef* S? '>'
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;;
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;; AttDef ::= S Name S AttType S DefaultDecl
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;;
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;;
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;; /* Attribute Types */
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;;
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;; AttType ::= StringType | TokenizedType | EnumeratedType
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;;
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;; StringType ::= 'CDATA'
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;;
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;; TokenizedType ::= 'ID' [VC: ID]
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;; [VC: One ID per Element Type]
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;; [VC: ID Attribute Default]
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;; | 'IDREF' [VC: IDREF]
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;; | 'IDREFS' [VC: IDREF]
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;; | 'ENTITY' [VC: Entity Name]
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;; | 'ENTITIES' [VC: Entity Name]
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;; | 'NMTOKEN' [VC: Name Token]
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;; | 'NMTOKENS' [VC: Name Token]
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;;
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;;
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;; /* Enumerated Attribute Types */
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;;
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;; EnumeratedType ::= NotationType | Enumeration
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;;
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;; NotationType ::= 'NOTATION' S '(' S? Name (S? '|' S? Name)* S? ')'
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;; [VC: Notation Attributes]
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;; [VC: One Notation Per Element Type]
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;; [VC: No Notation on Empty Element]
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;; [VC: No Duplicate Tokens]
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;;
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;; Enumeration ::= '(' S? Nmtoken (S? '|' S? Nmtoken)* S? ')'
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;; [VC: Enumeration]
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;; [VC: No Duplicate Tokens]
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;;
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;;
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;; /* Attribute Defaults */
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;;
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;; DefaultDecl ::= '#REQUIRED' | '#IMPLIED'
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;; | (('#FIXED' S)? AttValue)
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;; [VC: Required Attribute]
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;; [VC: Attribute Default Value Syntactically Correct]
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;; [WFC: No < in Attribute Values]
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;; [VC: Fixed Attribute Default]
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;;
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;;
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;; /* Conditional Section */
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;;
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;; conditionalSect ::= includeSect | ignoreSect
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;;
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;; includeSect ::= '<![' S? 'INCLUDE' S? '[' extSubsetDecl ']]>'
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;; [VC: Proper Conditional Section/PE Nesting]
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;;
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;; ignoreSect ::= '<![' S? 'IGNORE' S? '[' ignoreSectContents* ']]>'
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;; [VC: Proper Conditional Section/PE Nesting]
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;;
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;; ignoreSectContents ::= Ignore ('<![' ignoreSectContents ']]>' Ignore)*
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;;
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;; Ignore ::= Char* - (Char* ('<![' | ']]>') Char*)
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;;
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;;
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;; /* Character Reference */
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;;
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;; CharRef ::= '&#' [0-9]+ ';'
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;; | '&#x' [[:xdigit:]]+ ';'
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;; [WFC: Legal Character]
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;;
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;;
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;; /* Entity Reference */
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;;
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;; Reference ::= EntityRef | CharRef
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;;
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;; EntityRef ::= '&' Name ';'
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;; [WFC: Entity Declared]
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;; [VC: Entity Declared]
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;; [WFC: Parsed Entity]
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;; [WFC: No Recursion]
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;;
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;; PEReference ::= '%' Name ';'
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;; [VC: Entity Declared]
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;; [WFC: No Recursion]
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;; [WFC: In DTD]
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;;
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;;
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;; /* Entity Declaration */
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;;
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;; EntityDecl ::= GEDecl | PEDecl
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;;
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;; GEDecl ::= '<!ENTITY' S Name S EntityDef S? '>'
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;;
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;; PEDecl ::= '<!ENTITY' S '%' S Name S PEDef S? '>'
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;;
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;; EntityDef ::= EntityValue | (ExternalID NDataDecl?)
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;;
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;; PEDef ::= EntityValue | ExternalID
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;;
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;;
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;; /* External Entity Declaration */
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;;
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;; ExternalID ::= 'SYSTEM' S SystemLiteral
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;; | 'PUBLIC' S PubidLiteral S SystemLiteral
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;;
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;; NDataDecl ::= S 'NDATA' S Name
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;; [VC: Notation Declared]
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;;
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;;
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;; /* Text Declaration */
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;;
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;; TextDecl ::= '<?xml' VersionInfo? EncodingDecl S? '?>'
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;;
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;;
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;; /* Well-Formed External Parsed Entity */
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;;
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;; extParsedEnt ::= TextDecl? content
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;;
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;;
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;; /* Encoding Declaration */
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;;
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;; EncodingDecl ::= S 'encoding' Eq ('"' EncName '"' | "'" EncName "'" )
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;;
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;; EncName ::= [A-Za-z] ([A-Za-z0-9._] | '-')*
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;; /* Encoding name contains only Latin characters */
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;;
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;;
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;; /* Notation Declarations */
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;;
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;; NotationDecl ::= '<!NOTATION' S Name S (ExternalID | PublicID) S? '>'
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;; [VC: Unique Notation Name]
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;;
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;; PublicID ::= 'PUBLIC' S PubidLiteral
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;;
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;;
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;; /* Characters */
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;;
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;; Letter ::= BaseChar | Ideographic
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;;
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;; BaseChar ::= [#x0041-#x005A] | [#x0061-#x007A] | [#x00C0-#x00D6]
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;; | [#x00D8-#x00F6] | [#x00F8-#x00FF] | [#x0100-#x0131]
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;; | [#x0134-#x013E] | [#x0141-#x0148] | [#x014A-#x017E]
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;; | [#x0180-#x01C3] | [#x01CD-#x01F0] | [#x01F4-#x01F5]
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;; | [#x01FA-#x0217] | [#x0250-#x02A8] | [#x02BB-#x02C1]
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;; | #x0386 | [#x0388-#x038A] | #x038C
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;; | [#x038E-#x03A1] | [#x03A3-#x03CE] | [#x03D0-#x03D6]
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;; | #x03DA | #x03DC | #x03DE
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;; | #x03E0 | [#x03E2-#x03F3] | [#x0401-#x040C]
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;; | [#x040E-#x044F] | [#x0451-#x045C] | [#x045E-#x0481]
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;; | [#x0490-#x04C4] | [#x04C7-#x04C8] | [#x04CB-#x04CC]
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;; | [#x04D0-#x04EB] | [#x04EE-#x04F5] | [#x04F8-#x04F9]
|
||
;; | [#x0531-#x0556] | #x0559 | [#x0561-#x0586]
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;; | [#x05D0-#x05EA] | [#x05F0-#x05F2] | [#x0621-#x063A]
|
||
;; | [#x0641-#x064A] | [#x0671-#x06B7] | [#x06BA-#x06BE]
|
||
;; | [#x06C0-#x06CE] | [#x06D0-#x06D3] | #x06D5
|
||
;; | [#x06E5-#x06E6] | [#x0905-#x0939] | #x093D
|
||
;; | [#x0958-#x0961] | [#x0985-#x098C] | [#x098F-#x0990]
|
||
;; | [#x0993-#x09A8] | [#x09AA-#x09B0] | #x09B2
|
||
;; | [#x09B6-#x09B9] | [#x09DC-#x09DD] | [#x09DF-#x09E1]
|
||
;; | [#x09F0-#x09F1] | [#x0A05-#x0A0A] | [#x0A0F-#x0A10]
|
||
;; | [#x0A13-#x0A28] | [#x0A2A-#x0A30] | [#x0A32-#x0A33]
|
||
;; | [#x0A35-#x0A36] | [#x0A38-#x0A39] | [#x0A59-#x0A5C]
|
||
;; | #x0A5E | [#x0A72-#x0A74] | [#x0A85-#x0A8B]
|
||
;; | #x0A8D | [#x0A8F-#x0A91] | [#x0A93-#x0AA8]
|
||
;; | [#x0AAA-#x0AB0] | [#x0AB2-#x0AB3] | [#x0AB5-#x0AB9]
|
||
;; | #x0ABD | #x0AE0 | [#x0B05-#x0B0C]
|
||
;; | [#x0B0F-#x0B10] | [#x0B13-#x0B28] | [#x0B2A-#x0B30]
|
||
;; | [#x0B32-#x0B33] | [#x0B36-#x0B39] | #x0B3D
|
||
;; | [#x0B5C-#x0B5D] | [#x0B5F-#x0B61] | [#x0B85-#x0B8A]
|
||
;; | [#x0B8E-#x0B90] | [#x0B92-#x0B95] | [#x0B99-#x0B9A]
|
||
;; | #x0B9C | [#x0B9E-#x0B9F] | [#x0BA3-#x0BA4]
|
||
;; | [#x0BA8-#x0BAA] | [#x0BAE-#x0BB5] | [#x0BB7-#x0BB9]
|
||
;; | [#x0C05-#x0C0C] | [#x0C0E-#x0C10] | [#x0C12-#x0C28]
|
||
;; | [#x0C2A-#x0C33] | [#x0C35-#x0C39] | [#x0C60-#x0C61]
|
||
;; | [#x0C85-#x0C8C] | [#x0C8E-#x0C90] | [#x0C92-#x0CA8]
|
||
;; | [#x0CAA-#x0CB3] | [#x0CB5-#x0CB9] | #x0CDE
|
||
;; | [#x0CE0-#x0CE1] | [#x0D05-#x0D0C] | [#x0D0E-#x0D10]
|
||
;; | [#x0D12-#x0D28] | [#x0D2A-#x0D39] | [#x0D60-#x0D61]
|
||
;; | [#x0E01-#x0E2E] | #x0E30 | [#x0E32-#x0E33]
|
||
;; | [#x0E40-#x0E45] | [#x0E81-#x0E82] | #x0E84
|
||
;; | [#x0E87-#x0E88] | #x0E8A | #x0E8D
|
||
;; | [#x0E94-#x0E97] | [#x0E99-#x0E9F] | [#x0EA1-#x0EA3]
|
||
;; | #x0EA5 | #x0EA7 | [#x0EAA-#x0EAB]
|
||
;; | [#x0EAD-#x0EAE] | #x0EB0 | [#x0EB2-#x0EB3]
|
||
;; | #x0EBD | [#x0EC0-#x0EC4] | [#x0F40-#x0F47]
|
||
;; | [#x0F49-#x0F69] | [#x10A0-#x10C5] | [#x10D0-#x10F6]
|
||
;; | #x1100 | [#x1102-#x1103] | [#x1105-#x1107]
|
||
;; | #x1109 | [#x110B-#x110C] | [#x110E-#x1112]
|
||
;; | #x113C | #x113E | #x1140
|
||
;; | #x114C | #x114E | #x1150
|
||
;; | [#x1154-#x1155] | #x1159 | [#x115F-#x1161]
|
||
;; | #x1163 | #x1165 | #x1167
|
||
;; | #x1169 | [#x116D-#x116E] | [#x1172-#x1173]
|
||
;; | #x1175 | #x119E | #x11A8
|
||
;; | #x11AB | [#x11AE-#x11AF] | [#x11B7-#x11B8]
|
||
;; | #x11BA | [#x11BC-#x11C2] | #x11EB
|
||
;; | #x11F0 | #x11F9 | [#x1E00-#x1E9B]
|
||
;; | [#x1EA0-#x1EF9] | [#x1F00-#x1F15] | [#x1F18-#x1F1D]
|
||
;; | [#x1F20-#x1F45] | [#x1F48-#x1F4D] | [#x1F50-#x1F57]
|
||
;; | #x1F59 | #x1F5B | #x1F5D
|
||
;; | [#x1F5F-#x1F7D] | [#x1F80-#x1FB4] | [#x1FB6-#x1FBC]
|
||
;; | #x1FBE | [#x1FC2-#x1FC4] | [#x1FC6-#x1FCC]
|
||
;; | [#x1FD0-#x1FD3] | [#x1FD6-#x1FDB] | [#x1FE0-#x1FEC]
|
||
;; | [#x1FF2-#x1FF4] | [#x1FF6-#x1FFC] | #x2126
|
||
;; | [#x212A-#x212B] | #x212E | [#x2180-#x2182]
|
||
;; | [#x3041-#x3094] | [#x30A1-#x30FA] | [#x3105-#x312C]
|
||
;; | [#xAC00-#xD7A3]
|
||
;;
|
||
;; Ideographic ::= [#x4E00-#x9FA5] | #x3007 | [#x3021-#x3029]
|
||
;;
|
||
;; CombiningChar ::= [#x0300-#x0345] | [#x0360-#x0361] | [#x0483-#x0486]
|
||
;; | [#x0591-#x05A1] | [#x05A3-#x05B9] | [#x05BB-#x05BD]
|
||
;; | #x05BF | [#x05C1-#x05C2] | #x05C4
|
||
;; | [#x064B-#x0652] | #x0670 | [#x06D6-#x06DC]
|
||
;; | [#x06DD-#x06DF] | [#x06E0-#x06E4] | [#x06E7-#x06E8]
|
||
;; | [#x06EA-#x06ED] | [#x0901-#x0903] | #x093C
|
||
;; | [#x093E-#x094C] | #x094D | [#x0951-#x0954]
|
||
;; | [#x0962-#x0963] | [#x0981-#x0983] | #x09BC
|
||
;; | #x09BE | #x09BF | [#x09C0-#x09C4]
|
||
;; | [#x09C7-#x09C8] | [#x09CB-#x09CD] | #x09D7
|
||
;; | [#x09E2-#x09E3] | #x0A02 | #x0A3C
|
||
;; | #x0A3E | #x0A3F | [#x0A40-#x0A42]
|
||
;; | [#x0A47-#x0A48] | [#x0A4B-#x0A4D] | [#x0A70-#x0A71]
|
||
;; | [#x0A81-#x0A83] | #x0ABC | [#x0ABE-#x0AC5]
|
||
;; | [#x0AC7-#x0AC9] | [#x0ACB-#x0ACD] | [#x0B01-#x0B03]
|
||
;; | #x0B3C | [#x0B3E-#x0B43] | [#x0B47-#x0B48]
|
||
;; | [#x0B4B-#x0B4D] | [#x0B56-#x0B57] | [#x0B82-#x0B83]
|
||
;; | [#x0BBE-#x0BC2] | [#x0BC6-#x0BC8] | [#x0BCA-#x0BCD]
|
||
;; | #x0BD7 | [#x0C01-#x0C03] | [#x0C3E-#x0C44]
|
||
;; | [#x0C46-#x0C48] | [#x0C4A-#x0C4D] | [#x0C55-#x0C56]
|
||
;; | [#x0C82-#x0C83] | [#x0CBE-#x0CC4] | [#x0CC6-#x0CC8]
|
||
;; | [#x0CCA-#x0CCD] | [#x0CD5-#x0CD6] | [#x0D02-#x0D03]
|
||
;; | [#x0D3E-#x0D43] | [#x0D46-#x0D48] | [#x0D4A-#x0D4D]
|
||
;; | #x0D57 | #x0E31 | [#x0E34-#x0E3A]
|
||
;; | [#x0E47-#x0E4E] | #x0EB1 | [#x0EB4-#x0EB9]
|
||
;; | [#x0EBB-#x0EBC] | [#x0EC8-#x0ECD] | [#x0F18-#x0F19]
|
||
;; | #x0F35 | #x0F37 | #x0F39
|
||
;; | #x0F3E | #x0F3F | [#x0F71-#x0F84]
|
||
;; | [#x0F86-#x0F8B] | [#x0F90-#x0F95] | #x0F97
|
||
;; | [#x0F99-#x0FAD] | [#x0FB1-#x0FB7] | #x0FB9
|
||
;; | [#x20D0-#x20DC] | #x20E1 | [#x302A-#x302F]
|
||
;; | #x3099 | #x309A
|
||
;;
|
||
;; Digit ::= [#x0030-#x0039] | [#x0660-#x0669] | [#x06F0-#x06F9]
|
||
;; | [#x0966-#x096F] | [#x09E6-#x09EF] | [#x0A66-#x0A6F]
|
||
;; | [#x0AE6-#x0AEF] | [#x0B66-#x0B6F] | [#x0BE7-#x0BEF]
|
||
;; | [#x0C66-#x0C6F] | [#x0CE6-#x0CEF] | [#x0D66-#x0D6F]
|
||
;; | [#x0E50-#x0E59] | [#x0ED0-#x0ED9] | [#x0F20-#x0F29]
|
||
;;
|
||
;; Extender ::= #x00B7 | #x02D0 | #x02D1 | #x0387 | #x0640 | #x0E46 | #x0EC6
|
||
;; | #x3005 | [#x3031-#x3035] | [#x309D-#x309E] | [#x30FC-#x30FE]
|
||
;;
|
||
;;
|
||
;; NOTES
|
||
;; -----
|
||
;;
|
||
;; At moment, only the `<!ELEMENT' generates a syntactic chart. The
|
||
;; `<!ATTLIST', `<!NOTATION' and `<!ENTITY' are syntactically checked but they
|
||
;; don't generate a syntactic chart.
|
||
;;
|
||
;; Besides the syntax above, ebnf-dtd also accepts a `pure' dtd file. An
|
||
;; example of a `pure' dtd file is:
|
||
;;
|
||
;; <?xml version="1.0" encoding="UTF-8"?>
|
||
;; <!--
|
||
;; The main element.
|
||
;; -->
|
||
;; <!ELEMENT workflow (registers?, trigger-functions?, initial-actions,
|
||
;; steps, splits?, joins?)>
|
||
;; <!--
|
||
;; An action that can be executed (id must be unique among actions for
|
||
;; the enclosing step).
|
||
;; Used in: actions
|
||
;; -->
|
||
;; <!ELEMENT action (restrict-to, validators?, pre-functions?, results,
|
||
;; post-functions?)>
|
||
;; <!ATTLIST action
|
||
;; id CDATA #REQUIRED
|
||
;; name CDATA #REQUIRED
|
||
;; >
|
||
;;
|
||
;;
|
||
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
|
||
;;; Code:
|
||
|
||
|
||
(require 'ebnf-otz)
|
||
|
||
|
||
(defvar ebnf-dtd-lex nil
|
||
"Value returned by `ebnf-dtd-lex' function.")
|
||
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;; Syntactic analyzer
|
||
|
||
|
||
;;; document ::= prolog element Misc*
|
||
;;; /* Note that *only* the prolog will be parsed */
|
||
|
||
(defun ebnf-dtd-parser (start)
|
||
"DTD parser."
|
||
(let ((total (+ (- ebnf-limit start) 1))
|
||
(bias (1- start))
|
||
(origin (point))
|
||
rule-list token rule the-end)
|
||
(goto-char start)
|
||
(setq token (ebnf-dtd-lex))
|
||
(and (eq token 'end-of-input)
|
||
(error "Empty DTD file"))
|
||
(setq token (ebnf-dtd-prolog token))
|
||
(unless (eq (car token) 'end-prolog)
|
||
(setq the-end (cdr token)
|
||
token (car token))
|
||
(while (not (eq token the-end))
|
||
(ebnf-message-float
|
||
"Parsing...%s%%"
|
||
(/ (* (- (point) bias) 100.0) total))
|
||
(setq token (ebnf-dtd-intsubset token)
|
||
rule (cdr token)
|
||
token (car token))
|
||
(or (null rule)
|
||
(ebnf-add-empty-rule-list rule)
|
||
(setq rule-list (cons rule rule-list))))
|
||
(or (eq the-end 'end-of-input)
|
||
(eq (ebnf-dtd-lex) 'end-decl)
|
||
(error "Missing end of DOCTYPE"))
|
||
;; adjust message, 'cause *only* prolog will be parsed
|
||
(ebnf-message-float "Parsing...%s%%" 100.0))
|
||
(goto-char origin)
|
||
rule-list))
|
||
|
||
|
||
;;; prolog ::= XMLDecl? Misc* (doctypedecl Misc*)?
|
||
;;;
|
||
;;; XMLDecl ::= '<?xml' VersionInfo EncodingDecl? SDDecl? S? '?>'
|
||
;;;
|
||
;;; VersionInfo ::= S 'version' Eq ("'" VersionNum "'" | '"' VersionNum '"')
|
||
;;;
|
||
;;; Eq ::= S? '=' S?
|
||
;;;
|
||
;;; VersionNum ::= '1.0'
|
||
;;;
|
||
;;; Misc ::= Comment | PI | S
|
||
;;;
|
||
;;; EncodingDecl ::= S 'encoding' Eq ('"' EncName '"' | "'" EncName "'" )
|
||
;;;
|
||
;;; EncName ::= [A-Za-z] ([-A-Za-z0-9._])*
|
||
;;; /* Encoding name contains only Latin characters */
|
||
;;;
|
||
;;; SDDecl ::= S 'standalone' Eq
|
||
;;; (("'" ('yes' | 'no') "'") | ('"' ('yes' | 'no') '"'))
|
||
;;;
|
||
;;; doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S?
|
||
;;; ('[' intSubset ']' S?)? '>'
|
||
|
||
|
||
(defun ebnf-dtd-prolog (token)
|
||
(when (and (eq token 'begin-pi) (string= ebnf-dtd-lex "xml"))
|
||
;; version = "1.0"
|
||
(setq token (ebnf-dtd-attribute (ebnf-dtd-lex) 'version-attr
|
||
"^1\\.0$" "XML version"))
|
||
;; ( encoding = "encoding name" )?
|
||
(setq token (ebnf-dtd-attribute-optional
|
||
token 'encoding-attr
|
||
"^[A-Za-z][-A-Za-z0-9._]*$" "XML encoding"))
|
||
;; ( standalone = ( "yes" | "no" ) )?
|
||
(setq token (ebnf-dtd-attribute-optional
|
||
token 'standalone-attr
|
||
"^yes|no$" "XML standalone"))
|
||
(or (eq token 'end-pi)
|
||
(error "Missing end of XML processing instruction")))
|
||
;; processing instructions
|
||
(setq token (ebnf-dtd-pi (ebnf-dtd-lex)))
|
||
(cond
|
||
;; DOCTYPE
|
||
((eq token 'doctype-decl)
|
||
(or (eq (ebnf-dtd-lex) 'name)
|
||
(error "Document type name is missing"))
|
||
(cons (if (eq (ebnf-dtd-externalid) 'begin-subset)
|
||
(ebnf-dtd-lex)
|
||
'end-prolog)
|
||
'end-subset))
|
||
((memq token '(element-decl attlist-decl entity-decl notation-decl))
|
||
(cons token 'end-of-input))
|
||
(t
|
||
'(end-prolog . end-subset))
|
||
))
|
||
|
||
|
||
(defun ebnf-dtd-attribute (token attr match attr-name)
|
||
(or (eq token attr)
|
||
(error "%s attribute is missing" attr-name))
|
||
(ebnf-dtd-attribute-optional token attr match attr-name))
|
||
|
||
|
||
(defun ebnf-dtd-attribute-optional (token attr match attr-name)
|
||
(when (eq token attr)
|
||
(or (and (eq (ebnf-dtd-lex) 'equal)
|
||
(eq (ebnf-dtd-lex) 'string)
|
||
(string-match match ebnf-dtd-lex))
|
||
(error "XML %s attribute is invalid" attr-name))
|
||
(setq token (ebnf-dtd-lex)))
|
||
token)
|
||
|
||
|
||
;;; ExternalID ::= 'SYSTEM' S SystemLiteral
|
||
;;; | 'PUBLIC' S PubidLiteral S SystemLiteral
|
||
|
||
|
||
(defun ebnf-dtd-externalid (&optional token)
|
||
(let ((must-have token))
|
||
(or token (setq token (ebnf-dtd-lex)))
|
||
(cond ((eq token 'system)
|
||
(ebnf-dtd-systemliteral))
|
||
((eq token 'public)
|
||
(ebnf-dtd-pubidliteral)
|
||
(ebnf-dtd-systemliteral))
|
||
(must-have
|
||
(error "Missing `SYSTEM' or `PUBLIC' in external id"))
|
||
(t
|
||
token))))
|
||
|
||
|
||
;;; SystemLiteral ::= ('"' [^"]* '"')
|
||
;;; | ("'" [^']* "'")
|
||
|
||
|
||
(defun ebnf-dtd-systemliteral ()
|
||
(or (eq (ebnf-dtd-lex) 'string)
|
||
(error "System identifier is invalid"))
|
||
(ebnf-dtd-lex))
|
||
|
||
|
||
;;; PubidLiteral ::= '"' PubidChar* '"'
|
||
;;; | "'" (PubidChar - "'")* "'"
|
||
;;;
|
||
;;; PubidChar ::= [-'()+,./:=?;!*#@$_%\n\r a-zA-Z0-9]
|
||
|
||
|
||
(defun ebnf-dtd-pubidliteral ()
|
||
(or (and (eq (ebnf-dtd-lex) 'string)
|
||
(string-match "^[-'()+,./:=?;!*#@$_%\n\r a-zA-Z0-9]*$"
|
||
ebnf-dtd-lex))
|
||
(error "Public identifier is invalid")))
|
||
|
||
|
||
;;; PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>'
|
||
;;;
|
||
;;; PITarget ::= Name - (('X' | 'x') ('M' | 'm') ('L' | 'l'))
|
||
|
||
|
||
(defun ebnf-dtd-pi (token)
|
||
(while (eq token 'begin-pi)
|
||
(and (string-match "^[xX][mM][lL]$" ebnf-dtd-lex)
|
||
(error "Processing instruction name can not be `XML'"))
|
||
(while (not (eq (ebnf-dtd-lex) 'end-pi)))
|
||
(setq token (ebnf-dtd-lex)))
|
||
token)
|
||
|
||
|
||
;;; doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S?
|
||
;;; ('[' intSubset ']' S?)? '>'
|
||
;;;
|
||
;;; intSubset ::= (markupdecl | DeclSep)*
|
||
;;;
|
||
;;; DeclSep ::= PEReference | S
|
||
;;;
|
||
;;; markupdecl ::= elementdecl | AttlistDecl | EntityDecl
|
||
;;; | NotationDecl | PI | Comment
|
||
|
||
|
||
(defun ebnf-dtd-intsubset (token)
|
||
;; PI - Processing Instruction
|
||
(and (eq token 'begin-pi)
|
||
(setq token (ebnf-dtd-pi token)))
|
||
(cond
|
||
((memq token '(end-subset end-of-input))
|
||
(cons token nil))
|
||
((eq token 'pe-ref)
|
||
(cons (ebnf-dtd-lex) nil)) ; annotation
|
||
((eq token 'element-decl)
|
||
(ebnf-dtd-elementdecl)) ; rule
|
||
((eq token 'attlist-decl)
|
||
(ebnf-dtd-attlistdecl)) ; annotation
|
||
((eq token 'entity-decl)
|
||
(ebnf-dtd-entitydecl)) ; annotation
|
||
((eq token 'notation-decl)
|
||
(ebnf-dtd-notationdecl)) ; annotation
|
||
(t
|
||
(error "Invalid DOCTYPE element"))
|
||
))
|
||
|
||
|
||
;;; elementdecl ::= '<!ELEMENT' S Name S contentspec S? '>'
|
||
;;;
|
||
;;; contentspec ::= 'EMPTY' | 'ANY' | Mixed | children
|
||
;;;
|
||
;;; Mixed ::= '(' S? '#PCDATA' (S? '|' S? Name)* S? ')*'
|
||
;;; | '(' S? '#PCDATA' S? ')'
|
||
;;;
|
||
;;; children ::= (choice | seq) ('?' | '*' | '+')?
|
||
;;;
|
||
;;; choice ::= '(' S? cp ( S? '|' S? cp )+ S? ')'
|
||
;;;
|
||
;;; seq ::= '(' S? cp ( S? ',' S? cp )* S? ')'
|
||
;;;
|
||
;;; cp ::= (Name | choice | seq) ('?' | '*' | '+')?
|
||
|
||
|
||
(defun ebnf-dtd-elementdecl ()
|
||
(let ((action ebnf-action)
|
||
name token body)
|
||
(setq ebnf-action nil)
|
||
(or (eq (ebnf-dtd-lex) 'name)
|
||
(error "Invalid ELEMENT name"))
|
||
(setq name ebnf-dtd-lex
|
||
token (ebnf-dtd-lex)
|
||
body (cond ((memq token '(empty any))
|
||
(let ((term (ebnf-make-terminal ebnf-dtd-lex)))
|
||
(cons (ebnf-dtd-lex) term)))
|
||
((eq token 'begin-group)
|
||
(setq token (ebnf-dtd-lex))
|
||
(if (eq token 'pcdata)
|
||
(ebnf-dtd-mixed)
|
||
(ebnf-dtd-children token)))
|
||
(t
|
||
(error "Invalid ELEMENT content"))
|
||
))
|
||
(or (eq (car body) 'end-decl)
|
||
(error "Missing `>' in ELEMENT declaration"))
|
||
(ebnf-eps-add-production name)
|
||
(cons (ebnf-dtd-lex)
|
||
(ebnf-make-production name (cdr body) action))))
|
||
|
||
|
||
;;; Mixed ::= '(' S? '#PCDATA' (S? '|' S? Name)* S? ')*'
|
||
;;; | '(' S? '#PCDATA' S? ')'
|
||
|
||
|
||
(defun ebnf-dtd-mixed ()
|
||
(let* ((alt (cons (ebnf-make-terminal ebnf-dtd-lex) nil))
|
||
(token (ebnf-dtd-lex))
|
||
(has-alternative (eq token 'alternative)))
|
||
(while (eq token 'alternative)
|
||
(or (eq (ebnf-dtd-lex) 'name)
|
||
(error "Invalid name"))
|
||
(setq alt (cons ebnf-dtd-lex alt)
|
||
token (ebnf-dtd-lex)))
|
||
(or (eq token 'end-group)
|
||
(error "Missing `)'"))
|
||
(and has-alternative
|
||
(or (eq (ebnf-dtd-lex) 'zero-or-more)
|
||
(error "Missing `*'")))
|
||
(ebnf-token-alternative alt (cons (ebnf-dtd-lex) nil))))
|
||
|
||
|
||
;;; children ::= (choice | seq) ('?' | '*' | '+')?
|
||
|
||
|
||
(defun ebnf-dtd-children (token)
|
||
(ebnf-dtd-operators (ebnf-dtd-choice-seq token)))
|
||
|
||
|
||
;;; choice ::= '(' S? cp ( S? '|' S? cp )+ S? ')'
|
||
;;;
|
||
;;; seq ::= '(' S? cp ( S? ',' S? cp )* S? ')'
|
||
|
||
|
||
(defun ebnf-dtd-choice-seq (token)
|
||
(setq token (ebnf-dtd-cp token))
|
||
(let (elist)
|
||
(cond
|
||
;; choice
|
||
((eq (car token) 'alternative)
|
||
(while (eq (car token) 'alternative)
|
||
(setq elist (cons (cdr token) elist)
|
||
token (ebnf-dtd-cp (ebnf-dtd-lex))))
|
||
(setq elist (ebnf-token-alternative elist token)))
|
||
;; seq
|
||
((eq (car token) 'comma)
|
||
(while (eq (car token) 'comma)
|
||
(setq elist (cons (cdr token) elist)
|
||
token (ebnf-dtd-cp (ebnf-dtd-lex))))
|
||
(setq elist (ebnf-token-sequence (cons (cdr token) elist))))
|
||
;; only one element
|
||
(t
|
||
(setq elist (cdr token))))
|
||
(or (eq (car token) 'end-group)
|
||
(error "Missing `)' in ELEMENT content"))
|
||
elist))
|
||
|
||
|
||
;;; cp ::= (Name | choice | seq) ('?' | '*' | '+')?
|
||
|
||
|
||
(defun ebnf-dtd-cp (token)
|
||
(ebnf-dtd-operators (cond ((eq token 'name)
|
||
(ebnf-make-terminal ebnf-dtd-lex))
|
||
((eq token 'begin-group)
|
||
(ebnf-dtd-choice-seq (ebnf-dtd-lex)))
|
||
(t
|
||
(error "Invalid element"))
|
||
)))
|
||
|
||
|
||
;;; elm ('?' | '*' | '+')?
|
||
|
||
|
||
(defun ebnf-dtd-operators (elm)
|
||
(let ((token (ebnf-dtd-lex)))
|
||
(cond ((eq token 'optional) ; ? - optional
|
||
(cons (ebnf-dtd-lex) (ebnf-token-optional elm)))
|
||
((eq token 'zero-or-more) ; * - zero or more
|
||
(cons (ebnf-dtd-lex) (ebnf-make-zero-or-more elm)))
|
||
((eq token 'one-or-more) ; + - one or more
|
||
(cons (ebnf-dtd-lex) (ebnf-make-one-or-more elm)))
|
||
(t ; only element
|
||
(cons token elm))
|
||
)))
|
||
|
||
|
||
;;; AttlistDecl ::= '<!ATTLIST' S Name AttDef* S? '>'
|
||
;;;
|
||
;;; AttDef ::= S Name S AttType S DefaultDecl
|
||
;;;
|
||
;;; AttType ::= StringType | TokenizedType | EnumeratedType
|
||
;;;
|
||
;;; StringType ::= 'CDATA'
|
||
;;;
|
||
;;; TokenizedType ::= 'ID'
|
||
;;; | 'IDREF'
|
||
;;; | 'IDREFS'
|
||
;;; | 'ENTITY'
|
||
;;; | 'ENTITIES'
|
||
;;; | 'NMTOKEN'
|
||
;;; | 'NMTOKENS'
|
||
;;;
|
||
;;; EnumeratedType ::= NotationType | Enumeration
|
||
;;;
|
||
;;; NotationType ::= 'NOTATION' S '(' S? Name (S? '|' S? Name)* S? ')'
|
||
;;;
|
||
;;; Enumeration ::= '(' S? Nmtoken (S? '|' S? Nmtoken)* S? ')'
|
||
;;;
|
||
;;; DefaultDecl ::= '#REQUIRED'
|
||
;;; | '#IMPLIED'
|
||
;;; | (('#FIXED' S)? AttValue)
|
||
;;;
|
||
;;;
|
||
;;; AttValue ::= '"' ([^<&"] | Reference)* '"'
|
||
;;; | "'" ([^<&'] | Reference)* "'"
|
||
;;;
|
||
;;; Reference ::= EntityRef | CharRef
|
||
;;;
|
||
;;; EntityRef ::= '&' Name ';'
|
||
;;;
|
||
;;; CharRef ::= '&#' [0-9]+ ';'
|
||
;;; | '&#x' [[:xdigit:]]+ ';'
|
||
|
||
;;; "^\\(&\\([A-Za-z_:][-A-Za-z0-9._:]*\\|#\\(x[[:xdigit:]]+\\|[0-9]+\\)\\);\\|[^<&]\\)*$"
|
||
|
||
|
||
(defun ebnf-dtd-attlistdecl ()
|
||
(or (eq (ebnf-dtd-lex) 'name)
|
||
(error "Invalid ATTLIST name"))
|
||
(let (token)
|
||
(while (eq (setq token (ebnf-dtd-lex)) 'name)
|
||
;; type
|
||
(setq token (ebnf-dtd-lex))
|
||
(cond
|
||
((eq token 'notation)
|
||
(or (eq (ebnf-dtd-lex) 'begin-group)
|
||
(error "Missing `(' in NOTATION type in ATTLIST declaration"))
|
||
(ebnf-dtd-namelist "NOTATION" '(name)))
|
||
((eq token 'begin-group)
|
||
(ebnf-dtd-namelist "enumeration" '(name name-char)))
|
||
((memq token
|
||
'(cdata id idref idrefs entity entities nmtoken nmtokens)))
|
||
(t
|
||
(error "Invalid type in ATTLIST declaration")))
|
||
;; default value
|
||
(setq token (ebnf-dtd-lex))
|
||
(unless (memq token '(required implied))
|
||
(and (eq token 'fixed)
|
||
(setq token (ebnf-dtd-lex)))
|
||
(or (and (eq token 'string)
|
||
(string-match
|
||
"^\\(&\\([A-Za-z_:][-A-Za-z0-9._:]*\\|#\\(x[[:xdigit:]]+\\|[0-9]+\\)\\);\\|[^<&]\\)*$"
|
||
ebnf-dtd-lex))
|
||
(error "Invalid default value in ATTLIST declaration"))))
|
||
(or (eq token 'end-decl)
|
||
(error "Missing `>' in end of ATTLIST"))
|
||
(cons (ebnf-dtd-lex) nil)))
|
||
|
||
|
||
(defun ebnf-dtd-namelist (type name-list)
|
||
(let (token)
|
||
(while (progn
|
||
(or (memq (ebnf-dtd-lex) name-list)
|
||
(error "Invalid name in %s type in ATTLIST declaration" type))
|
||
(eq (setq token (ebnf-dtd-lex)) 'alternative)))
|
||
(or (eq token 'end-group)
|
||
(error "Missing `)' in %s type in ATTLIST declaration" type))))
|
||
|
||
|
||
;;; EntityDecl ::= GEDecl | PEDecl
|
||
;;;
|
||
;;; GEDecl ::= '<!ENTITY' S Name S EntityDef S? '>'
|
||
;;;
|
||
;;; PEDecl ::= '<!ENTITY' S '%' S Name S PEDef S? '>'
|
||
;;;
|
||
;;; EntityDef ::= EntityValue | (ExternalID NDataDecl?)
|
||
;;;
|
||
;;; PEDef ::= EntityValue | ExternalID
|
||
;;;
|
||
;;; NDataDecl ::= S 'NDATA' S Name
|
||
;;;
|
||
;;;
|
||
;;; EntityValue ::= '"' ([^%&"] | PEReference | Reference)* '"'
|
||
;;; | "'" ([^%&'] | PEReference | Reference)* "'"
|
||
;;;
|
||
;;; PEReference ::= '%' Name ';'
|
||
;;;
|
||
;;; Reference ::= EntityRef | CharRef
|
||
;;;
|
||
;;; EntityRef ::= '&' Name ';'
|
||
;;;
|
||
;;; CharRef ::= '&#' [0-9]+ ';'
|
||
;;; | '&#x' [[:xdigit:]]+ ';'
|
||
|
||
;;; "^\\(%[A-Za-z_:][-A-Za-z0-9._:]*;\\|&\\([A-Za-z_:][-A-Za-z0-9._:]*\\|#\\(x[[:xdigit:]]+\\|[0-9]+\\)\\);\\|[^%&]\\)*$"
|
||
|
||
|
||
(defun ebnf-dtd-entitydecl ()
|
||
(let* ((token (ebnf-dtd-lex))
|
||
(pedecl (eq token 'percent)))
|
||
(and pedecl
|
||
(setq token (ebnf-dtd-lex)))
|
||
(or (eq token 'name)
|
||
(error "Invalid name of ENTITY"))
|
||
(setq token (ebnf-dtd-lex))
|
||
(if (eq token 'string)
|
||
(if (string-match
|
||
"^\\(%[A-Za-z_:][-A-Za-z0-9._:]*;\\|&\\([A-Za-z_:][-A-Za-z0-9._:]*\\|#\\(x[[:xdigit:]]+\\|[0-9]+\\)\\);\\|[^%&]\\)*$"
|
||
ebnf-dtd-lex)
|
||
(setq token (ebnf-dtd-lex))
|
||
(error "Invalid ENTITY definition"))
|
||
(setq token (ebnf-dtd-externalid token))
|
||
(when (and (not pedecl) (eq token 'ndata))
|
||
(or (eq (ebnf-dtd-lex) 'name)
|
||
(error "Invalid NDATA name"))
|
||
(setq token (ebnf-dtd-lex))))
|
||
(or (eq token 'end-decl)
|
||
(error "Missing `>' in end of ENTITY"))
|
||
(cons (ebnf-dtd-lex) nil)))
|
||
|
||
|
||
;;; NotationDecl ::= '<!NOTATION' S Name S (ExternalID | PublicID) S? '>'
|
||
;;;
|
||
;;; PublicID ::= 'PUBLIC' S PubidLiteral
|
||
|
||
|
||
(defun ebnf-dtd-notationdecl ()
|
||
(or (eq (ebnf-dtd-lex) 'name)
|
||
(error "Invalid name NOTATION"))
|
||
(or (eq (ebnf-dtd-externalid-or-publicid) 'end-decl)
|
||
(error "Missing `>' in end of NOTATION"))
|
||
(cons (ebnf-dtd-lex) nil))
|
||
|
||
|
||
;;; ExternalID ::= 'SYSTEM' S SystemLiteral
|
||
;;; | 'PUBLIC' S PubidLiteral S SystemLiteral
|
||
;;;
|
||
;;; PublicID ::= 'PUBLIC' S PubidLiteral
|
||
|
||
|
||
(defun ebnf-dtd-externalid-or-publicid ()
|
||
(let ((token (ebnf-dtd-lex)))
|
||
(cond ((eq token 'system)
|
||
(ebnf-dtd-systemliteral))
|
||
((eq token 'public)
|
||
(ebnf-dtd-pubidliteral)
|
||
(and (eq (setq token (ebnf-dtd-lex)) 'string)
|
||
(setq token (ebnf-dtd-lex)))
|
||
token)
|
||
(t
|
||
(error "Missing `SYSTEM' or `PUBLIC'")))))
|
||
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;; Lexical analyzer
|
||
|
||
|
||
(defconst ebnf-dtd-token-table (make-vector 256 'error)
|
||
"Vector used to map characters to a lexical token.")
|
||
|
||
|
||
(defun ebnf-dtd-initialize ()
|
||
"Initialize EBNF token table."
|
||
;; control character & control 8-bit character are set to `error'
|
||
(let ((char ?\060))
|
||
;; digits: 0-9
|
||
(while (< char ?\072)
|
||
(aset ebnf-dtd-token-table char 'name-char)
|
||
(setq char (1+ char)))
|
||
;; printable character: A-Z
|
||
(setq char ?\101)
|
||
(while (< char ?\133)
|
||
(aset ebnf-dtd-token-table char 'name)
|
||
(setq char (1+ char)))
|
||
;; printable character: a-z
|
||
(setq char ?\141)
|
||
(while (< char ?\173)
|
||
(aset ebnf-dtd-token-table char 'name)
|
||
(setq char (1+ char)))
|
||
;; European 8-bit accentuated characters:
|
||
(setq char ?\240)
|
||
(while (< char ?\400)
|
||
(aset ebnf-dtd-token-table char 'name)
|
||
(setq char (1+ char)))
|
||
;; Override name characters:
|
||
(aset ebnf-dtd-token-table ?_ 'name)
|
||
(aset ebnf-dtd-token-table ?: 'name)
|
||
(aset ebnf-dtd-token-table ?. 'name-char)
|
||
(aset ebnf-dtd-token-table ?- 'name-char)
|
||
;; Override space characters:
|
||
(aset ebnf-dtd-token-table ?\n 'space) ; [NL] linefeed
|
||
(aset ebnf-dtd-token-table ?\r 'space) ; [CR] carriage return
|
||
(aset ebnf-dtd-token-table ?\t 'space) ; [HT] horizontal tab
|
||
(aset ebnf-dtd-token-table ?\ 'space) ; [SP] space
|
||
;; Override other lexical characters:
|
||
(aset ebnf-dtd-token-table ?= 'equal)
|
||
(aset ebnf-dtd-token-table ?, 'comma)
|
||
(aset ebnf-dtd-token-table ?* 'zero-or-more)
|
||
(aset ebnf-dtd-token-table ?+ 'one-or-more)
|
||
(aset ebnf-dtd-token-table ?| 'alternative)
|
||
(aset ebnf-dtd-token-table ?% 'percent)
|
||
(aset ebnf-dtd-token-table ?& 'ampersand)
|
||
(aset ebnf-dtd-token-table ?# 'hash)
|
||
(aset ebnf-dtd-token-table ?\? 'interrogation)
|
||
(aset ebnf-dtd-token-table ?\" 'double-quote)
|
||
(aset ebnf-dtd-token-table ?\' 'single-quote)
|
||
(aset ebnf-dtd-token-table ?< 'less-than)
|
||
(aset ebnf-dtd-token-table ?> 'end-decl)
|
||
(aset ebnf-dtd-token-table ?\( 'begin-group)
|
||
(aset ebnf-dtd-token-table ?\) 'end-group)
|
||
(aset ebnf-dtd-token-table ?\[ 'begin-subset)
|
||
(aset ebnf-dtd-token-table ?\] 'end-subset)))
|
||
|
||
|
||
(defconst ebnf-dtd-name-chars
|
||
"-._:0-9A-Za-z\u00a0-\u00ff")
|
||
|
||
|
||
(defconst ebnf-dtd-decl-alist
|
||
'(("ATTLIST" . attlist-decl)
|
||
("DOCTYPE" . doctype-decl)
|
||
("ELEMENT" . element-decl)
|
||
("ENTITY" . entity-decl)
|
||
("NOTATION" . notation-decl)))
|
||
|
||
|
||
(defconst ebnf-dtd-element-alist
|
||
'(("#FIXED" . fixed)
|
||
("#IMPLIED" . implied)
|
||
("#PCDATA" . pcdata)
|
||
("#REQUIRED" . required)))
|
||
|
||
|
||
(defconst ebnf-dtd-name-alist
|
||
'(("ANY" . any)
|
||
("CDATA" . cdata)
|
||
("EMPTY" . empty)
|
||
("ENTITIES" . entities)
|
||
("ENTITY" . entity)
|
||
("ID" . id)
|
||
("IDREF" . idref)
|
||
("IDREFS" . idrefs)
|
||
("NDATA" . ndata)
|
||
("NMTOKEN" . nmtoken)
|
||
("NMTOKENS" . nmtokens)
|
||
("NOTATION" . notation)
|
||
("PUBLIC" . public)
|
||
("SYSTEM" . system)
|
||
("encoding" . encoding-attr)
|
||
("standalone" . standalone-attr)
|
||
("version" . version-attr)))
|
||
|
||
|
||
(defun ebnf-dtd-lex ()
|
||
"Lexical analyzer for DTD.
|
||
|
||
Return a lexical token.
|
||
|
||
See documentation for variable `ebnf-dtd-lex'."
|
||
(if (>= (point) ebnf-limit)
|
||
'end-of-input
|
||
(let (token)
|
||
;; skip spaces and comments
|
||
(while (if (> (following-char) 255)
|
||
(progn
|
||
(setq token 'error)
|
||
nil)
|
||
(setq token (aref ebnf-dtd-token-table (following-char)))
|
||
(cond
|
||
((eq token 'space)
|
||
(skip-chars-forward " \n\r\t" ebnf-limit)
|
||
(< (point) ebnf-limit))
|
||
((and (eq token 'less-than)
|
||
(looking-at "<!--"))
|
||
(ebnf-dtd-skip-comment))
|
||
(t nil)
|
||
)))
|
||
(cond
|
||
;; end of input
|
||
((>= (point) ebnf-limit)
|
||
'end-of-input)
|
||
;; error
|
||
((eq token 'error)
|
||
(error "Invalid character"))
|
||
;; beginning of declaration:
|
||
;; <?name, <!ATTLIST, <!DOCTYPE, <!ELEMENT, <!ENTITY, <!NOTATION
|
||
((eq token 'less-than)
|
||
(forward-char)
|
||
(let ((char (following-char)))
|
||
(cond ((= char ?\?) ; <?
|
||
(forward-char)
|
||
(setq ebnf-dtd-lex (ebnf-buffer-substring ebnf-dtd-name-chars))
|
||
'begin-pi)
|
||
((= char ?!) ; <!
|
||
(forward-char)
|
||
(let ((decl (ebnf-buffer-substring ebnf-dtd-name-chars)))
|
||
(or (cdr (assoc decl ebnf-dtd-decl-alist))
|
||
(error "Invalid declaration name `%s'" decl))))
|
||
(t ; <x
|
||
(error "Invalid declaration `<%c'" char)))))
|
||
;; name, namechar
|
||
((memq token '(name name-char))
|
||
(setq ebnf-dtd-lex (ebnf-buffer-substring ebnf-dtd-name-chars))
|
||
(or (cdr (assoc ebnf-dtd-lex ebnf-dtd-name-alist))
|
||
token))
|
||
;; ?, ?>
|
||
((eq token 'interrogation)
|
||
(forward-char)
|
||
(if (/= (following-char) ?>)
|
||
'optional
|
||
(forward-char)
|
||
'end-pi))
|
||
;; #FIXED, #IMPLIED, #PCDATA, #REQUIRED
|
||
((eq token 'hash)
|
||
(forward-char)
|
||
(setq ebnf-dtd-lex
|
||
(concat "#" (ebnf-buffer-substring ebnf-dtd-name-chars)))
|
||
(or (cdr (assoc ebnf-dtd-lex ebnf-dtd-element-alist))
|
||
(error "Invalid element `%s'" ebnf-dtd-lex)))
|
||
;; "string"
|
||
((eq token 'double-quote)
|
||
(setq ebnf-dtd-lex (ebnf-dtd-string ?\"))
|
||
'string)
|
||
;; 'string'
|
||
((eq token 'single-quote)
|
||
(setq ebnf-dtd-lex (ebnf-dtd-string ?\'))
|
||
'string)
|
||
;; %, %name;
|
||
((eq token 'percent)
|
||
(forward-char)
|
||
(if (looking-at "[ \n\r\t]")
|
||
'percent
|
||
(setq ebnf-dtd-lex (ebnf-dtd-name-ref "%"))
|
||
'pe-ref))
|
||
;; &#...;, &#x...;, &name;
|
||
((eq token 'ampersand)
|
||
(forward-char)
|
||
(if (/= (following-char) ?#)
|
||
(progn
|
||
;; &name;
|
||
(setq ebnf-dtd-lex (ebnf-dtd-name-ref "&"))
|
||
'entity-ref)
|
||
;; &#...;, &#x...;
|
||
(forward-char)
|
||
(setq ebnf-dtd-lex (if (/= (following-char) ?x)
|
||
(ebnf-dtd-char-ref "&#" "0-9")
|
||
(forward-char)
|
||
(ebnf-dtd-char-ref "&#x" "[:xdigit:]")))
|
||
'char-ref))
|
||
;; miscellaneous: (, ), [, ], =, |, *, +, >, `,'
|
||
(t
|
||
(forward-char)
|
||
token)
|
||
))))
|
||
|
||
|
||
(defun ebnf-dtd-name-ref (start)
|
||
(ebnf-dtd-char-ref start ebnf-dtd-name-chars))
|
||
|
||
|
||
(defun ebnf-dtd-char-ref (start chars)
|
||
(let ((char (ebnf-buffer-substring chars)))
|
||
(or (= (following-char) ?\;)
|
||
(error "Invalid element `%s%s%c'" start char (following-char)))
|
||
(forward-char)
|
||
(format "%s%s;" start char)))
|
||
|
||
|
||
(defconst ebnf-dtd-double-string-chars
|
||
"\t -!#-~\u00a0-\u00ff")
|
||
(defconst ebnf-dtd-single-string-chars
|
||
"\t -&(-~\u00a0-\u00ff")
|
||
|
||
|
||
(defun ebnf-dtd-string (delim)
|
||
(buffer-substring-no-properties
|
||
(progn
|
||
(forward-char)
|
||
(point))
|
||
(progn
|
||
(skip-chars-forward (if (= delim ?\")
|
||
ebnf-dtd-double-string-chars
|
||
ebnf-dtd-single-string-chars)
|
||
ebnf-limit)
|
||
(or (= (following-char) delim)
|
||
(error "Missing string delimiter `%c'" delim))
|
||
(prog1
|
||
(point)
|
||
(forward-char)))))
|
||
|
||
|
||
(defconst ebnf-dtd-comment-chars
|
||
"^-\000-\010\013\014\016-\037\177\u0080-\u009f")
|
||
(defconst ebnf-dtd-filename-chars
|
||
"^-\000-\037\177\u0080-\u009f")
|
||
|
||
|
||
(defun ebnf-dtd-skip-comment ()
|
||
(forward-char 4) ; <!--
|
||
(cond
|
||
;; open EPS file
|
||
((and ebnf-eps-executing (= (following-char) ?\[))
|
||
(ebnf-eps-add-context (ebnf-dtd-eps-filename)))
|
||
;; close EPS file
|
||
((and ebnf-eps-executing (= (following-char) ?\]))
|
||
(ebnf-eps-remove-context (ebnf-dtd-eps-filename)))
|
||
;; EPS header
|
||
((and ebnf-eps-executing (= (following-char) ?H))
|
||
(ebnf-eps-header-comment (ebnf-dtd-eps-filename)))
|
||
;; EPS footer
|
||
((and ebnf-eps-executing (= (following-char) ?F))
|
||
(ebnf-eps-footer-comment (ebnf-dtd-eps-filename)))
|
||
;; any other action in comment
|
||
(t
|
||
(setq ebnf-action (aref ebnf-comment-table (following-char))))
|
||
)
|
||
(while (progn
|
||
(skip-chars-forward ebnf-dtd-comment-chars ebnf-limit)
|
||
(and (< (point) ebnf-limit)
|
||
(not (looking-at "-->"))))
|
||
(skip-chars-forward "-" ebnf-limit))
|
||
;; check for a valid end of comment
|
||
(cond ((>= (point) ebnf-limit)
|
||
nil)
|
||
((looking-at "-->")
|
||
(forward-char 3)
|
||
t)
|
||
(t
|
||
(error "Invalid character"))
|
||
))
|
||
|
||
|
||
(defun ebnf-dtd-eps-filename ()
|
||
(forward-char)
|
||
(let (fname)
|
||
(while (progn
|
||
(setq fname
|
||
(concat fname
|
||
(ebnf-buffer-substring ebnf-dtd-filename-chars)))
|
||
(and (< (point) ebnf-limit)
|
||
(= (following-char) ?-) ; may be \n, \t, \r
|
||
(not (looking-at "-->"))))
|
||
(setq fname (concat fname (ebnf-buffer-substring "-"))))
|
||
fname))
|
||
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
|
||
|
||
(provide 'ebnf-dtd)
|
||
|
||
;;; ebnf-dtd.el ends here
|