mirror/emacs
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/emacs.git synced 2024-12-15 09:47:20 +00:00
Code Issues Releases Activity
c1105d052e
emacs/lisp/progmodes/ebnf-dtd.el

1350 lines
41 KiB
EmacsLisp
Raw Normal View History

Parser for DTD (Data Type Definition for XML).
2004-04-05 01:48:53 +00:00
;;; ebnf-dtd.el --- parser for DTD (Data Type Description for XML)
Update copyright for release of 22.1 for progmodes directory.
2005-08-01 08:43:45 +00:00
;; Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Sofware Foundation, Inc.
Parser for DTD (Data Type Definition for XML).
2004-04-05 01:48:53 +00:00
;; Author: Vinicius Jose Latorre <viniciusjl@ig.com.br>
;; Maintainer: Vinicius Jose Latorre <viniciusjl@ig.com.br>
;; Time-stamp: <2004/04/04 21:50:16 vinicius>
;; Keywords: wp, ebnf, PostScript
;; Version: 1.0
;; This file is part of GNU Emacs.
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
Update FSF's address.
2005-07-04 17:55:18 +00:00
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
Parser for DTD (Data Type Definition for XML).
2004-04-05 01:48:53 +00:00
;;; Commentary:
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;;
;; This is part of ebnf2ps package.
;;
;; This package defines a parser for DTD (Data Type Description for XML).
;;
;; See ebnf2ps.el for documentation.
;;
;;
;; DTD Syntax
;; ----------
;;
;; See the URLs:
;; `http://www.w3.org/TR/2004/REC-xml-20040204/'
;; (Extensible Markup Language (XML) 1.0 (Third Edition))
;; `http://www.w3.org/TR/html40/'
;; (HTML 4.01 Specification)
;; `http://www.w3.org/TR/NOTE-html-970421'
;; (HTML DTD with support for Style Sheets)
;;
;;
;; /* Document */
;;
;; document ::= prolog element Misc*
;; /* Note that *only* the prolog will be parsed */
;;
;;
;; /* Characters */
;;
;; Char ::= #x9 | #xA | #xD
;; | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]
;; /* any Unicode character, excluding the surrogate blocks, FFFE, and FFFF. */
;;
;; /* NOTE:
;;
;; Document authors are encouraged to avoid "compatibility characters", as
;; defined in section 6.8 of [Unicode] (see also D21 in section 3.6 of
;; [Unicode3]). The characters defined in the following ranges are also
;; discouraged. They are either control characters or permanently undefined
;; Unicode characters:
;;
;; [#x7F-#x84], [#x86-#x9F], [#xFDD0-#xFDDF],
;; [#1FFFE-#x1FFFF], [#2FFFE-#x2FFFF], [#3FFFE-#x3FFFF],
;; [#4FFFE-#x4FFFF], [#5FFFE-#x5FFFF], [#6FFFE-#x6FFFF],
;; [#7FFFE-#x7FFFF], [#8FFFE-#x8FFFF], [#9FFFE-#x9FFFF],
;; [#AFFFE-#xAFFFF], [#BFFFE-#xBFFFF], [#CFFFE-#xCFFFF],
;; [#DFFFE-#xDFFFF], [#EFFFE-#xEFFFF], [#FFFFE-#xFFFFF],
;; [#10FFFE-#x10FFFF]. */
;;
;;
;; /* White Space */
;;
;; S ::= (#x20 | #x9 | #xD | #xA)+
;;
;;
;; /* Names and Tokens */
;;
;; NameChar ::= Letter | Digit | '.' | '-' | '_' | ':'
;; | CombiningChar | Extender
;;
;; Name ::= (Letter | '_' | ':') (NameChar)*
;;
;; Names ::= Name (#x20 Name)*
;;
;; Nmtoken ::= (NameChar)+
;;
;; Nmtokens ::= Nmtoken (#x20 Nmtoken)*
;;
;;
;; /* Literals */
;;
;; EntityValue ::= '"' ([^%&"] | PEReference | Reference)* '"'
;; | "'" ([^%&'] | PEReference | Reference)* "'"
;;
;; AttValue ::= '"' ([^<&"] | Reference)* '"'
;; | "'" ([^<&'] | Reference)* "'"
;;
;; SystemLiteral ::= ('"' [^"]* '"')
;; | ("'" [^']* "'")
;;
;; PubidLiteral ::= '"' PubidChar* '"'
;; | "'" (PubidChar - "'")* "'"
;;
;; PubidChar ::= #x20 | #xD | #xA | [a-zA-Z0-9] | [-'()+,./:=?;!*#@$_%]
;;
;; /* NOTE:
;;
;; Although the EntityValue production allows the definition of a general
;; entity consisting of a single explicit < in the literal (e.g., <!ENTITY
;; mylt "<">), it is strongly advised to avoid this practice since any
;; reference to that entity will cause a well-formedness error. */
;;
;;
;; /* Character Data */
;;
;; CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*)
;;
;;
;; /* Comments */
;;
;; Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
;;
;;
;; /* Processing Instructions */
;;
;; PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>'
;;
;; PITarget ::= Name - (('X' | 'x') ('M' | 'm') ('L' | 'l'))
;;
;;
;; /* CDATA Sections */
;;
;; CDSect ::= CDStart CData CDEnd
;;
;; CDStart ::= '<![CDATA['
;;
;; CData ::= (Char* - (Char* ']]>' Char*))
;;
;; CDEnd ::= ']]>'
;;
;;
;; /* Prolog */
;;
;; 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
;;
;;
;; /* Document Type Definition */
;;
;; doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S?
;; ('[' intSubset ']' S?)? '>'
;; [VC: Root Element Type]
;; [WFC: External Subset]
;;
;; DeclSep ::= PEReference | S
;; [WFC: PE Between Declarations]
;;
;; intSubset ::= (markupdecl | DeclSep)*
;;
;; markupdecl ::= elementdecl | AttlistDecl | EntityDecl
;; | NotationDecl | PI | Comment
;; [VC: Proper Declaration/PE Nesting]
;; [WFC: PEs in Internal Subset]
;;
;;
;; /* External Subset */
;;
;; extSubset ::= TextDecl? extSubsetDecl
;;
;; extSubsetDecl ::= ( markupdecl | conditionalSect | DeclSep)*
;;
;;
;; /* Standalone Document Declaration */
;;
;; SDDecl ::= S 'standalone' Eq
;; (("'" ('yes' | 'no') "'") | ('"' ('yes' | 'no') '"'))
;; [VC: Standalone Document Declaration]
;;
;;
;; /* Element */
;;
;; element ::= EmptyElemTag | STag content ETag
;; [WFC: Element Type Match]
;; [VC: Element Valid]
;;
;;
;; /* Start-tag */
;;
;; STag ::= '<' Name (S Attribute)* S? '>'
;; [WFC: Unique Att Spec]
;;
;; Attribute ::= Name Eq AttValue
;; [VC: Attribute Value Type]
;; [WFC: No External Entity References]
;; [WFC: No < in Attribute Values]
;;
;;
;; /* End-tag */
;;
;; ETag ::= '</' Name S? '>'
;;
;;
;; /* Content of Elements */
;;
;; content ::= CharData?
;; ((element | Reference | CDSect | PI | Comment) CharData?)*
;;
;;
;; /* Tags for Empty Elements */
;;
;; EmptyElemTag ::= '<' Name (S Attribute)* S? '/>'
;; [WFC: Unique Att Spec]
;;
;;
;; /* Element Type Declaration */
;;
;; elementdecl ::= '<!ELEMENT' S Name S contentspec S? '>'
;; [VC: Unique Element Type Declaration]
;;
;; contentspec ::= 'EMPTY' | 'ANY' | Mixed | children
;;
;;
;; /* Element-content Models */
;;
;; children ::= (choice | seq) ('?' | '*' | '+')?
;;
;; cp ::= (Name | choice | seq) ('?' | '*' | '+')?
;;
;; choice ::= '(' S? cp ( S? '|' S? cp )+ S? ')'
;; [VC: Proper Group/PE Nesting]
;;
;; seq ::= '(' S? cp ( S? ',' S? cp )* S? ')'
;; [VC: Proper Group/PE Nesting]
;;
;;
;; /* Mixed-content Declaration */
;;
;; Mixed ::= '(' S? '#PCDATA' (S? '|' S? Name)* S? ')*'
;; | '(' S? '#PCDATA' S? ')'
;; [VC: Proper Group/PE Nesting]
;; [VC: No Duplicate Types]
;;
;;
;; /* Attribute-list Declaration */
;;
;; AttlistDecl ::= '<!ATTLIST' S Name AttDef* S? '>'
;;
;; AttDef ::= S Name S AttType S DefaultDecl
;;
;;
;; /* Attribute Types */
;;
;; AttType ::= StringType | TokenizedType | EnumeratedType
;;
;; StringType ::= 'CDATA'
;;
;; TokenizedType ::= 'ID' [VC: ID]
;; [VC: One ID per Element Type]
;; [VC: ID Attribute Default]
;; | 'IDREF' [VC: IDREF]
;; | 'IDREFS' [VC: IDREF]
;; | 'ENTITY' [VC: Entity Name]
;; | 'ENTITIES' [VC: Entity Name]
;; | 'NMTOKEN' [VC: Name Token]
;; | 'NMTOKENS' [VC: Name Token]
;;
;;
;; /* Enumerated Attribute Types */
;;
;; EnumeratedType ::= NotationType | Enumeration
;;
;; NotationType ::= 'NOTATION' S '(' S? Name (S? '|' S? Name)* S? ')'
;; [VC: Notation Attributes]
;; [VC: One Notation Per Element Type]
;; [VC: No Notation on Empty Element]
;; [VC: No Duplicate Tokens]
;;
;; Enumeration ::= '(' S? Nmtoken (S? '|' S? Nmtoken)* S? ')'
;; [VC: Enumeration]
;; [VC: No Duplicate Tokens]
;;
;;
;; /* Attribute Defaults */
;;
;; DefaultDecl ::= '#REQUIRED' | '#IMPLIED'
;; | (('#FIXED' S)? AttValue)
;; [VC: Required Attribute]
;; [VC: Attribute Default Value Syntactically Correct]
;; [WFC: No < in Attribute Values]
;; [VC: Fixed Attribute Default]
;;
;;
;; /* Conditional Section */
;;
;; conditionalSect ::= includeSect | ignoreSect
;;
;; includeSect ::= '<![' S? 'INCLUDE' S? '[' extSubsetDecl ']]>'
;; [VC: Proper Conditional Section/PE Nesting]
;;
;; ignoreSect ::= '<![' S? 'IGNORE' S? '[' ignoreSectContents* ']]>'
;; [VC: Proper Conditional Section/PE Nesting]
;;
;; ignoreSectContents ::= Ignore ('<![' ignoreSectContents ']]>' Ignore)*
;;
;; Ignore ::= Char* - (Char* ('<![' | ']]>') Char*)
;;
;;
;; /* Character Reference */
;;
;; CharRef ::= '&#' [0-9]+ ';'
;; | '&#x' [0-9a-fA-F]+ ';'
;; [WFC: Legal Character]
;;
;;
;; /* Entity Reference */
;;
;; Reference ::= EntityRef | CharRef
;;
;; EntityRef ::= '&' Name ';'
;; [WFC: Entity Declared]
;; [VC: Entity Declared]
;; [WFC: Parsed Entity]
;; [WFC: No Recursion]
;;
;; PEReference ::= '%' Name ';'
;; [VC: Entity Declared]
;; [WFC: No Recursion]
;; [WFC: In DTD]
;;
;;
;; /* Entity Declaration */
;;
;; 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
;;
;;
;; /* External Entity Declaration */
;;
;; ExternalID ::= 'SYSTEM' S SystemLiteral
;; | 'PUBLIC' S PubidLiteral S SystemLiteral
;;
;; NDataDecl ::= S 'NDATA' S Name
;; [VC: Notation Declared]
;;
;;
;; /* Text Declaration */
;;
;; TextDecl ::= '<?xml' VersionInfo? EncodingDecl S? '?>'
;;
;;
;; /* Well-Formed External Parsed Entity */
;;
;; extParsedEnt ::= TextDecl? content
;;
;;
;; /* Encoding Declaration */
;;
;; EncodingDecl ::= S 'encoding' Eq ('"' EncName '"' | "'" EncName "'" )
;;
;; EncName ::= [A-Za-z] ([A-Za-z0-9._] | '-')*
;; /* Encoding name contains only Latin characters */
;;
;;
;; /* Notation Declarations */
;;
;; NotationDecl ::= '<!NOTATION' S Name S (ExternalID | PublicID) S? '>'
;; [VC: Unique Notation Name]
;;
;; PublicID ::= 'PUBLIC' S PubidLiteral
;;
;;
;; /* Characters */
;;
;; Letter ::= BaseChar | Ideographic
;;
;; BaseChar ::= [#x0041-#x005A] | [#x0061-#x007A] | [#x00C0-#x00D6]
;; | [#x00D8-#x00F6] | [#x00F8-#x00FF] | [#x0100-#x0131]
;; | [#x0134-#x013E] | [#x0141-#x0148] | [#x014A-#x017E]
;; | [#x0180-#x01C3] | [#x01CD-#x01F0] | [#x01F4-#x01F5]
;; | [#x01FA-#x0217] | [#x0250-#x02A8] | [#x02BB-#x02C1]
;; | #x0386 | [#x0388-#x038A] | #x038C
;; | [#x038E-#x03A1] | [#x03A3-#x03CE] | [#x03D0-#x03D6]
;; | #x03DA | #x03DC | #x03DE
;; | #x03E0 | [#x03E2-#x03F3] | [#x0401-#x040C]
;; | [#x040E-#x044F] | [#x0451-#x045C] | [#x045E-#x0481]
;; | [#x0490-#x04C4] | [#x04C7-#x04C8] | [#x04CB-#x04CC]
;; | [#x04D0-#x04EB] | [#x04EE-#x04F5] | [#x04F8-#x04F9]
;; | [#x0531-#x0556] | #x0559 | [#x0561-#x0586]
;; | [#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 syntacticly 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' [0-9a-fA-F]+ ';'
;;; "^\\(&\\([A-Za-z_:][-A-Za-z0-9._:]*\\|#\\(x[0-9a-fA-F]+\\|[0-9]+\\)\\);\\|[^<&]\\)*$"
(defun ebnf-dtd-attlistdecl ()
(or (eq (ebnf-dtd-lex) 'name)
(error "Invalid ATTLIST name"))
(let (token)
(while (eq (setq token (ebnf-dtd-lex)) 'name)
;; type
(setq token (ebnf-dtd-lex))
(cond
((eq token 'notation)
(or (eq (ebnf-dtd-lex) 'begin-group)
(error "Missing `(' in NOTATION type in ATTLIST declaration"))
(ebnf-dtd-namelist "NOTATION" '(name)))
((eq token 'begin-group)
(ebnf-dtd-namelist "enumeration" '(name name-char)))
((memq token
'(cdata id idref idrefs entity entities nmtoken nmtokens)))
(t
(error "Invalid type in ATTLIST declaration")))
;; default value
(setq token (ebnf-dtd-lex))
(unless (memq token '(required implied))
(and (eq token 'fixed)
(setq token (ebnf-dtd-lex)))
(or (and (eq token 'string)
(string-match
"^\\(&\\([A-Za-z_:][-A-Za-z0-9._:]*\\|#\\(x[0-9a-fA-F]+\\|[0-9]+\\)\\);\\|[^<&]\\)*$"
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' [0-9a-fA-F]+ ';'
;;; "^\\(%[A-Za-z_:][-A-Za-z0-9._:]*;\\|&\\([A-Za-z_:][-A-Za-z0-9._:]*\\|#\\(x[0-9a-fA-F]+\\|[0-9]+\\)\\);\\|[^%&]\\)*$"
(defun ebnf-dtd-entitydecl ()
(let* ((token (ebnf-dtd-lex))
(pedecl (eq token 'percent)))
(and pedecl
(setq token (ebnf-dtd-lex)))
(or (eq token 'name)
(error "Invalid name of ENTITY"))
(setq token (ebnf-dtd-lex))
(if (eq token 'string)
(if (string-match
"^\\(%[A-Za-z_:][-A-Za-z0-9._:]*;\\|&\\([A-Za-z_:][-A-Za-z0-9._:]*\\|#\\(x[0-9a-fA-F]+\\|[0-9]+\\)\\);\\|[^%&]\\)*$"
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)))
;; replace the range "\240-\377" (see `ebnf-range-regexp').
(defconst ebnf-dtd-name-chars
(ebnf-range-regexp "-._:0-9A-Za-z" ?\240 ?\377))
(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 ()
(ebnf-dtd-lex): Fix spellings.
2005-06-21 13:49:00 +00:00
"Lexical analyzer for DTD.
Parser for DTD (Data Type Definition for XML).
2004-04-05 01:48:53 +00:00
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)
* progmodes/ebnf-abn.el, progmodes/ebnf-bnf.el, progmodes/ebnf-ebx.el, progmodes/ebnf-dtd.el, progmodes/ebnf-iso.el, progmodes/ebnf-yac.el, progmodes/ebnf2ps.el, progmodes/idlwave.el, progmodes/sh-script.el, progmodes/xscheme.el: Replace `illegal' with `invalid'.
2005-03-25 08:47:00 +00:00
(error "Invalid character"))
Parser for DTD (Data Type Definition for XML).
2004-04-05 01:48:53 +00:00
;; 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" "0-9a-fA-F")))
'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)))
;; replace the range "\240-\377" (see `ebnf-range-regexp').
(defconst ebnf-dtd-double-string-chars
(ebnf-range-regexp "\t -!#-~" ?\240 ?\377))
(defconst ebnf-dtd-single-string-chars
(ebnf-range-regexp "\t -&(-~" ?\240 ?\377))
(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)))))
;; replace the range "\177-\237" (see `ebnf-range-regexp').
(defconst ebnf-dtd-comment-chars
(ebnf-range-regexp "^-\000-\010\013\014\016-\037" ?\177 ?\237))
(defconst ebnf-dtd-filename-chars
(ebnf-range-regexp "^-\000-\037" ?\177 ?\237))
(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)))
;; 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
* progmodes/ebnf-abn.el, progmodes/ebnf-bnf.el, progmodes/ebnf-ebx.el, progmodes/ebnf-dtd.el, progmodes/ebnf-iso.el, progmodes/ebnf-yac.el, progmodes/ebnf2ps.el, progmodes/idlwave.el, progmodes/sh-script.el, progmodes/xscheme.el: Replace `illegal' with `invalid'.
2005-03-25 08:47:00 +00:00
(error "Invalid character"))
Parser for DTD (Data Type Definition for XML).
2004-04-05 01:48:53 +00:00
))
(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)
Changes from arch/CVS synchronization
2004-04-05 01:58:47 +00:00
;;; arch-tag: c21bb640-135f-4afa-8712-fa11d86301c4
Parser for DTD (Data Type Definition for XML).
2004-04-05 01:48:53 +00:00
;;; ebnf-dtd.el ends here
Reference in New Issue Copy Permalink