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/* Part of SWI-Prolog
Author: Jan Wielemaker
E-mail: J.Wielemaker@vu.nl
WWW: http://www.swi-prolog.org
Copyright (c) 2000-2014, University of Amsterdam
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SGML_PARSER_H_INCLUDED
#define SGML_PARSER_H_INCLUDED
#include "util.h"
#include <wchar.h>
/*******************************
* CALL-BACK *
*******************************/
/* sgml_attribute->flags */
#define SGML_AT_DEFAULT 0x1
typedef struct _sgml_attribute
{ struct /* so we can free members */
{ wchar_t *textW; /* UCS textual value */
long number; /* numeric value/length */
} value;
dtd_attr *definition; /* DTD definition */
unsigned flags; /* additional flags */
} sgml_attribute;
typedef struct _dtd_parser *dtd_parser_p;
typedef int (*sgml_begin_element_f)(dtd_parser_p parser,
dtd_element *e,
int argc,
sgml_attribute *argv);
typedef int (*sgml_end_element_f)(dtd_parser_p parser,
dtd_element *e);
typedef int (*sgml_data_f)(dtd_parser_p parser,
data_type type, int len, const wchar_t *text);
typedef int (*sgml_wdata_f)(dtd_parser_p parser,
data_type type, int len, const wchar_t *text);
typedef int (*sgml_entity_f)(dtd_parser_p parser,
dtd_entity *entity,
int chr);
typedef int (*sgml_pi_f)(dtd_parser_p parser, const ichar *pi);
typedef int (*sgml_error_f)(dtd_parser_p parser,
dtd_error *error);
typedef int (*sgml_decl_f)(dtd_parser_p parser, const ichar *decl);
#ifdef XMLNS
typedef int (*xmlns_f)(dtd_parser_p parser,
dtd_symbol *ns, dtd_symbol *url);
#endif
/*******************************
* PARSER AND STATES *
*******************************/
#define SGML_PARSER_MAGIC (0x834ab663)
typedef enum
{ S_PCDATA, /* between declarations */
#ifdef UTF8
S_UTF8, /* Loading UTF-8 character */
#endif
S_CDATA, /* non-parsed data */
S_RCDATA, /* CDATA+entities */
S_MSCDATA, /* <![CDATA[...]]> */
S_EMSCDATA1, /* Seen ] in S_MSCDATA */
S_EMSCDATA2, /* Seen ]] in S_MSCDATA */
S_ECDATA1, /* Seen < in CDATA */
S_ECDATA2, /* Seen </ in CDATA */
S_EMSC1, /* Seen ] in marked section */
S_EMSC2, /* Seen ]] in marked section */
S_PI, /* Seen <? */
S_PI2, /* Seen <?...? */
S_DECL0, /* Seen < */
S_DECL, /* inside a declaration */
S_MDECL0, /* Seen <! */
S_STRING, /* inside a "string" or 'string' */
S_VAL0, /* Seen = in decl */
S_DECLCMT0, /* Seen <...- */
S_DECLCMT, /* Seen <...-- */
S_DECLCMTE0, /* Seen <...--..- */
S_CMTO, /* Seen <!- */
S_CMT, /* Seen <!--X... */
S_CMTE0, /* Seem <!--...- */
S_CMTE1, /* Seem <!--...-- */
S_GROUP, /* inside [...] */
S_PENT, /* Seen % */
S_ENT0, /* Seen & */
S_ENT, /* Seen &(#|\w) */
S_ENTCR /* Seen &entity<CR> */
} dtdstate;
typedef enum
{ DCL_DTD, /* DTD Declaration */
DCL_BEGIN, /* begin-tag */
DCL_END /* end-tag */
} dcl_type;
typedef enum
{ MS_IGNORE, /* ignore this data */
MS_INCLUDE, /* process normally */
MS_CDATA, /* pass literally */
MS_RCDATA /* replace entities */
} marktype;
typedef enum
{ EV_EXPLICIT, /* Explicit event */
EV_OMITTED, /* Omitted tag event */
EV_SHORTTAG, /* SHORTTAG event: <tag/value/ */
EV_SHORTREF /* SHORTREF event */
} sgml_event_class;
typedef struct _dtd_marked
{ dtd_symbol *keyword; /* keyword of the marked section */
marktype type; /* processing type */
struct _dtd_marked *parent; /* parent marked section */
} dtd_marked;
typedef enum
{ DM_DTD, /* DTD mode: no data allowed (?) */
DM_DATA /* Environment has only elements */
} data_mode;
#ifdef XMLNS
typedef enum
{ NONS_ERROR = 0,
NONS_QUIET
} xmlnons;
#endif
typedef struct _sgml_environment
{ dtd_element *element; /* element that opened the env */
struct _dtd_state *state; /* State we are in */
#ifdef XMLNS
struct _xmlns *xmlns; /* XML namespace */
struct _xmlns *thisns; /* Name space of element */
#endif
#ifdef XMLBASE
ichar *uri_base; /* xml:base handling */
#endif
dtd_space_mode space_mode; /* How to handle blanks */
dtd_shortref *map; /* SHORTREF map */
struct _sgml_environment *parent; /* Parent environment */
int wants_net; /* I want a net */
int saved_waiting_for_net; /* saved value of waiting for net */
} sgml_environment;
/* parser->flags */
#define SGML_PARSER_NODEFS 0x01 /* don't handle default atts */
#define SGML_PARSER_QUALIFY_ATTS 0x02 /* qualify attributes in XML mode */
typedef struct _dtd_parser
{ unsigned long magic; /* SGML_PARSER_MAGIC */
dtd *dtd; /* DTD we are building */
dtdstate state; /* current state */
dtdstate cdata_state; /* S_CDATA/S_RCDATA */
dtd_marked *marked; /* marked section stack */
marktype mark_state; /* processing mode */
dtd_element *empty_element; /* empty of <tag/> seen */
sgml_environment *environments; /* Open environments */
data_mode dmode; /* How to handle characters */
int first; /* Just seen <tag> */
int waiting_for_net; /* waiting for / in <shorttag/mode/ */
size_t max_memory; /* maximum buffer size */
int ignore_doctype; /* If 1, ignore doctype declarations */
icharbuf *buffer; /* buffer for temp data */
ocharbuf *cdata; /* collected character data */
int blank_cdata; /* CDATA is all blank */
int cdata_must_be_empty; /* Only shortrefs allowed here */
const ichar *etag; /* name of end-tag in CDATA */
int etaglen; /* length of end-tag */
int grouplevel; /* [..] level in declaration */
int saved; /* saved character */
dtdstate lit_saved_state; /* literal saved-state */
int encoded; /* TRUE for binary input */
dtd_shortref *map; /* SHORTREF map */
#ifdef UTF8
int utf8_decode; /* decode UTF-8 sequences? */
int utf8_char; /* building character */
int utf8_left; /* bytes left */
dtdstate utf8_saved_state; /* state from which we come */
#endif
dtd_srcloc location; /* Current location */
dtd_srcloc startloc; /* Start of last markup */
dtd_srcloc startcdata; /* Start of last cdata */
dtd_symbol *enforce_outer_element; /* Outer element to look for */
sgml_event_class event_class; /* EV_* */
xmlnons xml_no_ns; /* What if namespace does not exist? */
#ifdef XMLNS
struct _xmlns *xmlns; /* Outer xmlns declaration */
#endif
void *closure; /* client handle */
sgml_begin_element_f on_begin_element; /* start an element */
sgml_end_element_f on_end_element; /* end an element */
sgml_data_f on_data; /* process cdata */
sgml_entity_f on_entity; /* unprocessed entity */
sgml_pi_f on_pi; /* processing instruction */
sgml_error_f on_error; /* handle error */
sgml_decl_f on_decl; /* handle declarations */
#ifdef XMLNS
xmlns_f on_xmlns; /* handle new namespace */
#endif
unsigned flags; /* misc flags */
int cdata_rep; /* representation for cdata */
int att_rep; /* representation for attribute values */
} dtd_parser;
#ifdef XMLNS
#include "xmlns.h"
#endif
extern int gripe(dtd_parser *p, dtd_error_id e, ...);
#define SGML_SUB_DOCUMENT 0x1
#endif /*SGML_PARSER_H_INCLUDED*/
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