# HTML DTD - Software Interface

    /*
    **	(c) COPYRIGHT CERN 1994.
    **	Please first read the full copyright statement in the file COPYRIGH.
    */

SGML purists should excuse the use of the term "DTD" in this file to represent DTD-related information which is not exactly a DTD itself. The C modular structure doesn't work very well here, as the dtd is partly in the .h and partly in the .c which are not very independent. Tant pis!.

This module a part of the Library of Common Code.

    #ifndef HTMLDTD_H
    #define HTMLDTD_H

    #include "sysdep.h"
    #include "HTUtils.h"
    #include "SGML.h"

## Element Numbers

Must Match all tables by element! These include tables in HTMLDTD.c and code in HTML.c .

    typedef enum _HTMLElement {
    	HTML_A, 	HTML_ADDRESS,
    	HTML_B,		HTML_BLOCKQUOTE,	HTML_BODY,
    	HTML_BR,
    	HTML_CITE,	HTML_CODE,	HTML_COMMENT,
    	HTML_DD, 	HTML_DFN,	HTML_DIR,
     	HTML_DL, 	HTML_DLC,	HTML_DT,
    	HTML_EM,
    	HTML_HEAD,
    	HTML_H1, 	HTML_H2, 	HTML_H3,
    	HTML_H4,	HTML_H5, 	HTML_H6, 	HTML_H7,
    	HTML_HR,
    	HTML_HTML,
    	HTML_I,		HTML_IMG,	HTML_ISINDEX,
     	HTML_KBD,
    	HTML_LI, 	HTML_LINK,	HTML_LISTING,
    	HTML_MENU,	HTML_NEXTID,
    	HTML_OL,	HTML_P,		HTML_PLAINTEXT, HTML_PRE,
    	HTML_SAMP,	HTML_STRONG,
    	HTML_TITLE,	HTML_TT,
    	HTML_U,		HTML_UL,
    	HTML_VAR,	HTML_XMP } HTMLElement;

    #define HTML_ELEMENTS 47

## Attribute numbers

Identifier is HTML_<element>_<attribute>. These must match the tables in HTMLDTD.c !

    #define HTML_A_HREF 		0
    #define HTML_A_NAME 		1
    #define HTML_A_REL		2
    #define HTML_A_REV		3
    #define HTML_A_TITLE		4
    #define HTML_A_TYPE 		5
    #define HTML_A_URN		6
    #define HTML_A_ATTRIBUTES	7

    #define DL_COMPACT 0

    #define HTML_IMG_ALIGN		0

    #define HTML_IMG_ALT		1
    #define HTML_IMG_ISMAP		2	/* Obsolete but supported */
    #define HTML_IMG_SRC 		3
    #define HTML_IMG_ATTRIBUTES	4

    #define HTML_NEXTID_ATTRIBUTES  1
    #define HTML_NEXTID_N 0

    #define HTML_PRE_WIDTH		0
    #define HTML_PRE_ATTRIBUTES	1

    extern CONST SGML_dtd HTML_dtd;

## Start anchor element

It is kinda convenient to have a particulr routine for starting an anchor element, as everything else for HTML is simple anyway.

### On entry

targetstream poinst to a structured stream object.

name and href point to attribute strings or are NULL if the attribute is to be omitted.

    extern void HTStartAnchor PARAMS((
    		HTStructured * targetstream,
    		CONST char *  	name,
    		CONST char *  	href));

    #endif /* HTMLDTD_H */

## Specify next ID to be used

This is anoter convenience routine, for specifying the next ID to be used by an editor in the series z1. z2,...

    extern void HTNextID PARAMS((HTStructured * targetStream, int n));

End of module definition