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/*
* Copyright (c) 2002, Jon Travis
* 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 AUTHOR ``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 AUTHOR 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 EKHTML_PRIVATE_DOT_H
#define EKHTML_PRIVATE_DOT_H
#ifndef EKHTML_USE_PRIVATE
#error This file should only be used by the EKHTML library
#endif
#include <stdio.h>
#include "ekhtml_config.h"
#include "hash.h"
/*
* Container structures -- since a void * is not guaranteed to store
* the function pointer correctly, we make a small container for them
*/
typedef struct {
ekhtml_starttag_cb_t startfunc;
ekhtml_endtag_cb_t endfunc;
} ekhtml_tag_container;
/*
* Processing state information
*/
#define EKHTML_STATE_NONE 0 /* No state - figure it out */
#define EKHTML_STATE_INDATA 1 /* In regular data */
#define EKHTML_STATE_BADDATA 2 /* In some kind of bad data .. I.e
an invalid tag. The first char
in the data is a '<' we must skip */
#define EKHTML_STATE_STARTTAG 3 /* In a start tag */
#define EKHTML_STATE_ENDTAG 4 /* In an end tag */
#define EKHTML_STATE_SPECIAL 5 /* Special tag: <!FOO BAR BAZ */
#define EKHTML_STATE_COMMENT 6 /* <!--Comment tag, yo! --> */
#define EKHTML_CHAR_TAGNAME (1 << 0) /* AFTER first letter of tag */
#define EKHTML_CHAR_WHITESPACE (1 << 1) /* Whitespace, obviously */
#define EKHTML_CHAR_BEGATTRNAME (1 << 2) /* Valid 1st letter of attr */
#define EKHTML_CHAR_ATTRNAME (1 << 3) /* AFTER first letter of attr */
#define EKHTML_CHAR_ATTRVALUE (1 << 4) /* Valid attr value chars */
#define EKHTML_CHARMAP_TYPE unsigned int
#define EKHTML_CHARMAP_TYPE_S "unsigned int"
#define EKHTML_CHARMAP_LEN (sizeof(EKHTML_CHARMAP_TYPE))
typedef struct {
int tagend; /* Offset to the end of the tag name */
int mode; /* One of EKHTML_STMODE_* */
ekhtml_attr_t *attrs; /* Already processed attributes */
ekhtml_attr_t *curattr; /* Attribute currently being processed */
char quote; /* If the value is quoted, this is the char */
} ekhtml_starttag_state;
typedef struct {
int dashes; /* # of dashes in a row found */
int lastdash; /* Offset of last dash */
} ekhtml_comment_state;
typedef struct {
int lastchar; /* Offset of last non-witespace char (offset from '<') */
} ekhtml_endtag_state;
struct ekhtml_parser_t {
ekhtml_data_cb_t datacb; /* Callback when data is read */
hash_t *startendcb; /* Hash of start & end tag callbacks */
void *cbdata; /* Data to pass into all callbacks */
ekhtml_starttag_cb_t startcb_unk; /* Unknown starttag callback */
ekhtml_endtag_cb_t endcb_unk; /* Unknown endtag callback */
ekhtml_data_cb_t commentcb; /* Comment callback */
char *buf; /* malloced buffer holding parse data */
size_t nalloced; /* # of bytes alloced in 'buf' */
size_t nbuf; /* # of bytes used in 'buf' */
/* The next two vars are only used in the starttag portion */
ekhtml_starttag_state startstate; /* State info in start tags */
ekhtml_attr_t *freeattrs; /* Attribute structures which callers
can allocate and release at will */
ekhtml_endtag_state endstate; /* State info in end tags */
ekhtml_comment_state commentstate;/* Only used in comment state */
struct {
int state; /* One of EKHTML_STATE_* */
void *state_data; /* State dependent data pointer */
int offset; /* State dependent offset information */
} state;
};
extern char *ekhtml_parse_comment(ekhtml_parser_t *, void **, const char *,
const char *, int *baddata);
extern char *ekhtml_parse_special(ekhtml_parser_t *, void **, const char *,
const char *, int *);
extern char *ekhtml_parse_starttag(ekhtml_parser_t *, void **, char *,
char *, int *);
extern char *ekhtml_parse_endtag(ekhtml_parser_t *, void **, char *,
char *, int *);
extern char *ekhtml_parse_data(ekhtml_parser_t *, const char *, const char *,
int);
extern void ekhtml_parser_starttag_cleanup(ekhtml_parser_t *);
extern char *ekhtml_make_upperstr(char *, int);
/*
* find_notcharsmap: Find a character in a buffer which contains a false
* value in the character map 'map'
*
* Arguments: buf = Buffer to search through
* len = Length of `buf`
* charmap = Character map (i.e. one from ekhtml_tables.h)
* mask = Mask to compare against each value of the map.
* If the char masked against 'mask' is zero,
* then the comparison is 'false'.
*
* Return values: Returns buf + len if a character was not found, else
* a pointer to the invalid character.
*/
static inline
char *ekhtml_find_notcharsmap(const char *buf, int len,
const EKHTML_CHARMAP_TYPE *charmap,
EKHTML_CHARMAP_TYPE mask)
{
const char *endp = buf + len;
for(;buf<endp;buf++)
if(!(charmap[(unsigned char )*buf] & mask))
break;
return (char *)((buf == endp) ? endp : buf);
}
#endif
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