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HTMLparser.c
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/*
* HTMLparser.c : an HTML 4.0 non-verifying parser
*
* See Copyright for the status of this software.
*
*/
#define IN_LIBXML
#include "libxml.h"
#ifdef LIBXML_HTML_ENABLED
#include <string.h>
#ifdef HAVE_CTYPE_H
#include <ctype.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ZLIB_H
#include <zlib.h>
#endif
#include <libxml/xmlmemory.h>
#include <libxml/tree.h>
#include <libxml/parser.h>
#include <libxml/parserInternals.h>
#include <libxml/xmlerror.h>
#include <libxml/HTMLparser.h>
#include <libxml/HTMLtree.h>
#include <libxml/entities.h>
#include <libxml/encoding.h>
#include <libxml/valid.h>
#include <libxml/xmlIO.h>
#include <libxml/globals.h>
#include <libxml/uri.h>
#define HTML_MAX_NAMELEN 1000
#define HTML_PARSER_BIG_BUFFER_SIZE 1000
#define HTML_PARSER_BUFFER_SIZE 100
/* #define DEBUG */
/* #define DEBUG_PUSH */
static int htmlOmittedDefaultValue = 1;
xmlChar * htmlDecodeEntities(htmlParserCtxtPtr ctxt, int len,
xmlChar end, xmlChar end2, xmlChar end3);
static void htmlParseComment(htmlParserCtxtPtr ctxt);
/************************************************************************
* *
* Some factorized error routines *
* *
************************************************************************/
/**
* xmlErrMemory:
* @ctxt: an HTML parser context
* @extra: extra informations
*
* Handle a redefinition of attribute error
*/
static void
htmlErrMemory(xmlParserCtxtPtr ctxt, const char *extra)
{
if (ctxt != NULL) {
ctxt->errNo = XML_ERR_NO_MEMORY;
ctxt->instate = XML_PARSER_EOF;
ctxt->disableSAX = 1;
}
if (extra)
__xmlRaiseError(NULL, NULL, ctxt, NULL, XML_FROM_PARSER,
XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, extra,
NULL, NULL, 0, 0,
"Memory allocation failed : %s\n", extra);
else
__xmlRaiseError(NULL, NULL, ctxt, NULL, XML_FROM_PARSER,
XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, NULL,
NULL, NULL, 0, 0, "Memory allocation failed\n");
}
/**
* htmlParseErr:
* @ctxt: an HTML parser context
* @error: the error number
* @msg: the error message
* @str1: string infor
* @str2: string infor
*
* Handle a fatal parser error, i.e. violating Well-Formedness constraints
*/
static void
htmlParseErr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar *str1, const xmlChar *str2)
{
ctxt->errNo = error;
__xmlRaiseError(NULL, NULL, ctxt, NULL, XML_FROM_HTML, error,
XML_ERR_ERROR, NULL, 0,
(const char *) str1, (const char *) str2,
NULL, 0, 0,
msg, str1, str2);
ctxt->wellFormed = 0;
}
/**
* htmlParseErrInt:
* @ctxt: an HTML parser context
* @error: the error number
* @msg: the error message
* @val: integer info
*
* Handle a fatal parser error, i.e. violating Well-Formedness constraints
*/
static void
htmlParseErrInt(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, int val)
{
ctxt->errNo = error;
__xmlRaiseError(NULL, NULL, ctxt, NULL, XML_FROM_HTML, error,
XML_ERR_ERROR, NULL, 0, NULL, NULL,
NULL, val, 0, msg, val);
ctxt->wellFormed = 0;
}
/************************************************************************
* *
* Parser stacks related functions and macros *
* *
************************************************************************/
/**
* htmlnamePush:
* @ctxt: an HTML parser context
* @value: the element name
*
* Pushes a new element name on top of the name stack
*
* Returns 0 in case of error, the index in the stack otherwise
*/
static int
htmlnamePush(htmlParserCtxtPtr ctxt, const xmlChar * value)
{
if (ctxt->nameNr >= ctxt->nameMax) {
ctxt->nameMax *= 2;
ctxt->nameTab = (const xmlChar * *)
xmlRealloc((xmlChar * *)ctxt->nameTab,
ctxt->nameMax *
sizeof(ctxt->nameTab[0]));
if (ctxt->nameTab == NULL) {
htmlErrMemory(ctxt, NULL);
return (0);
}
}
ctxt->nameTab[ctxt->nameNr] = value;
ctxt->name = value;
return (ctxt->nameNr++);
}
/**
* htmlnamePop:
* @ctxt: an HTML parser context
*
* Pops the top element name from the name stack
*
* Returns the name just removed
*/
static const xmlChar *
htmlnamePop(htmlParserCtxtPtr ctxt)
{
const xmlChar *ret;
if (ctxt->nameNr <= 0)
return (0);
ctxt->nameNr--;
if (ctxt->nameNr < 0)
return (0);
if (ctxt->nameNr > 0)
ctxt->name = ctxt->nameTab[ctxt->nameNr - 1];
else
ctxt->name = NULL;
ret = ctxt->nameTab[ctxt->nameNr];
ctxt->nameTab[ctxt->nameNr] = 0;
return (ret);
}
/*
* Macros for accessing the content. Those should be used only by the parser,
* and not exported.
*
* Dirty macros, i.e. one need to make assumption on the context to use them
*
* CUR_PTR return the current pointer to the xmlChar to be parsed.
* CUR returns the current xmlChar value, i.e. a 8 bit value if compiled
* in ISO-Latin or UTF-8, and the current 16 bit value if compiled
* in UNICODE mode. This should be used internally by the parser
* only to compare to ASCII values otherwise it would break when
* running with UTF-8 encoding.
* NXT(n) returns the n'th next xmlChar. Same as CUR is should be used only
* to compare on ASCII based substring.
* UPP(n) returns the n'th next xmlChar converted to uppercase. Same as CUR
* it should be used only to compare on ASCII based substring.
* SKIP(n) Skip n xmlChar, and must also be used only to skip ASCII defined
* strings without newlines within the parser.
*
* Clean macros, not dependent of an ASCII context, expect UTF-8 encoding
*
* CURRENT Returns the current char value, with the full decoding of
* UTF-8 if we are using this mode. It returns an int.
* NEXT Skip to the next character, this does the proper decoding
* in UTF-8 mode. It also pop-up unfinished entities on the fly.
* NEXTL(l) Skip the current unicode character of l xmlChars long.
* COPY(to) copy one char to *to, increment CUR_PTR and to accordingly
*/
#define UPPER (toupper(*ctxt->input->cur))
#define SKIP(val) ctxt->nbChars += (val),ctxt->input->cur += (val),ctxt->input->col+=(val)
#define NXT(val) ctxt->input->cur[(val)]
#define UPP(val) (toupper(ctxt->input->cur[(val)]))
#define CUR_PTR ctxt->input->cur
#define SHRINK xmlParserInputShrink(ctxt->input)
#define GROW xmlParserInputGrow(ctxt->input, INPUT_CHUNK)
#define CURRENT ((int) (*ctxt->input->cur))
#define SKIP_BLANKS htmlSkipBlankChars(ctxt)
/* Inported from XML */
/* #define CUR (ctxt->token ? ctxt->token : (int) (*ctxt->input->cur)) */
#define CUR ((int) (*ctxt->input->cur))
#define NEXT xmlNextChar(ctxt)
#define RAW (ctxt->token ? -1 : (*ctxt->input->cur))
#define NXT(val) ctxt->input->cur[(val)]
#define CUR_PTR ctxt->input->cur
#define NEXTL(l) do { \
if (*(ctxt->input->cur) == '\n') { \
ctxt->input->line++; ctxt->input->col = 1; \
} else ctxt->input->col++; \
ctxt->token = 0; ctxt->input->cur += l; ctxt->nbChars++; \
} while (0)
/************
\
if (*ctxt->input->cur == '%') xmlParserHandlePEReference(ctxt); \
if (*ctxt->input->cur == '&') xmlParserHandleReference(ctxt);
************/
#define CUR_CHAR(l) htmlCurrentChar(ctxt, &l)
#define CUR_SCHAR(s, l) xmlStringCurrentChar(ctxt, s, &l)
#define COPY_BUF(l,b,i,v) \
if (l == 1) b[i++] = (xmlChar) v; \
else i += xmlCopyChar(l,&b[i],v)
/**
* htmlCurrentChar:
* @ctxt: the HTML parser context
* @len: pointer to the length of the char read
*
* The current char value, if using UTF-8 this may actually span multiple
* bytes in the input buffer. Implement the end of line normalization:
* 2.11 End-of-Line Handling
* If the encoding is unspecified, in the case we find an ISO-Latin-1
* char, then the encoding converter is plugged in automatically.
*
* Returns the current char value and its length
*/
static int
htmlCurrentChar(xmlParserCtxtPtr ctxt, int *len) {
if (ctxt->instate == XML_PARSER_EOF)
return(0);
if (ctxt->token != 0) {
*len = 0;
return(ctxt->token);
}
if (ctxt->charset == XML_CHAR_ENCODING_UTF8) {
/*
* We are supposed to handle UTF8, check it's valid
* From rfc2044: encoding of the Unicode values on UTF-8:
*
* UCS-4 range (hex.) UTF-8 octet sequence (binary)
* 0000 0000-0000 007F 0xxxxxxx
* 0000 0080-0000 07FF 110xxxxx 10xxxxxx
* 0000 0800-0000 FFFF 1110xxxx 10xxxxxx 10xxxxxx
*
* Check for the 0x110000 limit too
*/
const unsigned char *cur = ctxt->input->cur;
unsigned char c;
unsigned int val;
c = *cur;
if (c & 0x80) {
if (cur[1] == 0)
xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
if ((cur[1] & 0xc0) != 0x80)
goto encoding_error;
if ((c & 0xe0) == 0xe0) {
if (cur[2] == 0)
xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
if ((cur[2] & 0xc0) != 0x80)
goto encoding_error;
if ((c & 0xf0) == 0xf0) {
if (cur[3] == 0)
xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
if (((c & 0xf8) != 0xf0) ||
((cur[3] & 0xc0) != 0x80))
goto encoding_error;
/* 4-byte code */
*len = 4;
val = (cur[0] & 0x7) << 18;
val |= (cur[1] & 0x3f) << 12;
val |= (cur[2] & 0x3f) << 6;
val |= cur[3] & 0x3f;
} else {
/* 3-byte code */
*len = 3;
val = (cur[0] & 0xf) << 12;
val |= (cur[1] & 0x3f) << 6;
val |= cur[2] & 0x3f;
}
} else {
/* 2-byte code */
*len = 2;
val = (cur[0] & 0x1f) << 6;
val |= cur[1] & 0x3f;
}
if (!IS_CHAR(val)) {
htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
"Char 0x%X out of allowed range\n", val);
}
return(val);
} else {
/* 1-byte code */
*len = 1;
return((int) *ctxt->input->cur);
}
}
/*
* Assume it's a fixed length encoding (1) with
* a compatible encoding for the ASCII set, since
* XML constructs only use < 128 chars
*/
*len = 1;
if ((int) *ctxt->input->cur < 0x80)
return((int) *ctxt->input->cur);
/*
* Humm this is bad, do an automatic flow conversion
*/
xmlSwitchEncoding(ctxt, XML_CHAR_ENCODING_8859_1);
ctxt->charset = XML_CHAR_ENCODING_UTF8;
return(xmlCurrentChar(ctxt, len));
encoding_error:
/*
* If we detect an UTF8 error that probably mean that the
* input encoding didn't get properly advertized in the
* declaration header. Report the error and switch the encoding
* to ISO-Latin-1 (if you don't like this policy, just declare the
* encoding !)
*/
htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
"Input is not proper UTF-8, indicate encoding !\n",
NULL, NULL);
if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) {
ctxt->sax->error(ctxt->userData, "Bytes: 0x%02X 0x%02X 0x%02X 0x%02X\n",
ctxt->input->cur[0], ctxt->input->cur[1],
ctxt->input->cur[2], ctxt->input->cur[3]);
}
ctxt->charset = XML_CHAR_ENCODING_8859_1;
*len = 1;
return((int) *ctxt->input->cur);
}
/**
* htmlSkipBlankChars:
* @ctxt: the HTML parser context
*
* skip all blanks character found at that point in the input streams.
*
* Returns the number of space chars skipped
*/
static int
htmlSkipBlankChars(xmlParserCtxtPtr ctxt) {
int res = 0;
while (IS_BLANK(*(ctxt->input->cur))) {
if ((*ctxt->input->cur == 0) &&
(xmlParserInputGrow(ctxt->input, INPUT_CHUNK) <= 0)) {
xmlPopInput(ctxt);
} else {
if (*(ctxt->input->cur) == '\n') {
ctxt->input->line++; ctxt->input->col = 1;
} else ctxt->input->col++;
ctxt->input->cur++;
ctxt->nbChars++;
if (*ctxt->input->cur == 0)
xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
}
res++;
}
return(res);
}
/************************************************************************
* *
* The list of HTML elements and their properties *
* *
************************************************************************/
/*
* Start Tag: 1 means the start tag can be ommited
* End Tag: 1 means the end tag can be ommited
* 2 means it's forbidden (empty elements)
* 3 means the tag is stylistic and should be closed easily
* Depr: this element is deprecated
* DTD: 1 means that this element is valid only in the Loose DTD
* 2 means that this element is valid only in the Frameset DTD
*
* Name,Start Tag,End Tag,Save End,Empty,Deprecated,DTD,inline,Description
, subElements , impliedsubelt , Attributes, userdata
*/
/* Definitions and a couple of vars for HTML Elements */
#define FONTSTYLE "tt", "i", "b", "u", "s", "strike", "big", "small"
#define PHRASE "em", "strong", "dfn", "code", "samp", "kbd", "var", "cite", "abbr", "acronym"
#define SPECIAL "a", "img", "applet", "object", "font", "basefont", "br", "script", "map", "q", "sub", "sup", "span", "bdo", "iframe"
#define INLINE PCDATA FONTSTYLE PHRASE SPECIAL FORMCTRL
#define BLOCK HEADING LIST "pre", "p", "dl", "div", "center", "noscript", "noframes", "blockquote", "form", "isindex", "hr", "table", "fieldset", "address"
#define FORMCTRL "input", "select", "textarea", "label", "button"
#define PCDATA
#define HEADING "h1", "h2", "h3", "h4", "h5", "h6"
#define LIST "ul", "ol", "dir", "menu"
#define MODIFIER
#define FLOW BLOCK,INLINE
#define EMPTY NULL
static const char* html_flow[] = { FLOW, NULL } ;
static const char* html_inline[] = { INLINE, NULL } ;
/* placeholders: elts with content but no subelements */
static const char* html_pcdata[] = { NULL } ;
#define html_cdata html_pcdata
/* ... and for HTML Attributes */
#define COREATTRS "id", "class", "style", "title"
#define I18N "lang", "dir"
#define EVENTS "onclick", "ondblclick", "onmousedown", "onmouseup", "onmouseover", "onmouseout", "onkeypress", "onkeydown", "onkeyup"
#define ATTRS COREATTRS,I18N,EVENTS
#define CELLHALIGN "align", "char", "charoff"
#define CELLVALIGN "valign"
static const char* html_attrs[] = { ATTRS, NULL } ;
static const char* core_i18n_attrs[] = { COREATTRS, I18N, NULL } ;
static const char* core_attrs[] = { COREATTRS, NULL } ;
static const char* i18n_attrs[] = { I18N, NULL } ;
/* Other declarations that should go inline ... */
static const char* a_attrs[] = { ATTRS, "charset", "type", "name",
"href", "hreflang", "rel", "rev", "accesskey", "shape", "coords",
"tabindex", "onfocus", "onblur", NULL } ;
static const char* target_attr[] = { "target", NULL } ;
static const char* rows_cols_attr[] = { "rows", "cols", NULL } ;
static const char* alt_attr[] = { "alt", NULL } ;
static const char* src_alt_attrs[] = { "src", "alt", NULL } ;
static const char* href_attrs[] = { "href", NULL } ;
static const char* clear_attrs[] = { "clear", NULL } ;
static const char* inline_p[] = { INLINE, "p", NULL } ;
static const char* flow_param[] = { FLOW, "param", NULL } ;
static const char* applet_attrs[] = { COREATTRS , "codebase",
"archive", "alt", "name", "height", "width", "align",
"hspace", "vspace", NULL } ;
static const char* area_attrs[] = { "shape", "coords", "href", "nohref",
"tabindex", "accesskey", "onfocus", "onblur", NULL } ;
static const char* basefont_attrs[] =
{ "id", "size", "color", "face", NULL } ;
static const char* quote_attrs[] = { ATTRS, "cite", NULL } ;
static const char* body_contents[] = { FLOW, "ins", "del", NULL } ;
static const char* body_attrs[] = { ATTRS, "onload", "onunload", NULL } ;
static const char* body_depr[] = { "background", "bgcolor", "text",
"link", "vlink", "alink", NULL } ;
static const char* button_attrs[] = { ATTRS, "name", "value", "type",
"disabled", "tabindex", "accesskey", "onfocus", "onblur", NULL } ;
static const char* col_attrs[] = { ATTRS, "span", "width", CELLHALIGN, CELLVALIGN, NULL } ;
static const char* col_elt[] = { "col", NULL } ;
static const char* edit_attrs[] = { ATTRS, "datetime", "cite", NULL } ;
static const char* compact_attrs[] = { ATTRS, "compact", NULL } ;
static const char* dl_contents[] = { "dt", "dd", NULL } ;
static const char* compact_attr[] = { "compact", NULL } ;
static const char* label_attr[] = { "label", NULL } ;
static const char* fieldset_contents[] = { FLOW, "legend" } ;
static const char* font_attrs[] = { COREATTRS, I18N, "size", "color", "face" , NULL } ;
static const char* form_contents[] = { HEADING, LIST, INLINE, "pre", "p", "div", "center", "noscript", "noframes", "blockquote", "isindex", "hr", "table", "fieldset", "address", NULL } ;
static const char* form_attrs[] = { ATTRS, "method", "enctype", "accept", "name", "onsubmit", "onreset", "accept-charset", NULL } ;
static const char* frame_attrs[] = { COREATTRS, "longdesc", "name", "src", "frameborder", "marginwidth", "marginheight", "noresize", "scrolling" , NULL } ;
static const char* frameset_attrs[] = { COREATTRS, "rows", "cols", "onload", "onunload", NULL } ;
static const char* frameset_contents[] = { "frameset", "frame", "noframes", NULL } ;
static const char* head_attrs[] = { I18N, "profile", NULL } ;
static const char* head_contents[] = { "title", "isindex", "base", "script", "style", "meta", "link", "object", NULL } ;
static const char* hr_depr[] = { "align", "noshade", "size", "width", NULL } ;
static const char* version_attr[] = { "version", NULL } ;
static const char* html_content[] = { "head", "body", "frameset", NULL } ;
static const char* iframe_attrs[] = { COREATTRS, "longdesc", "name", "src", "frameborder", "marginwidth", "marginheight", "scrolling", "align", "height", "width", NULL } ;
static const char* img_attrs[] = { ATTRS, "longdesc", "name", "height", "width", "usemap", "ismap", NULL } ;
static const char* input_attrs[] = { ATTRS, "type", "name", "value", "checked", "disabled", "readonly", "size", "maxlength", "src", "alt", "usemap", "ismap", "tabindex", "accesskey", "onfocus", "onblur", "onselect", "onchange", "accept", NULL } ;
static const char* prompt_attrs[] = { COREATTRS, I18N, "prompt", NULL } ;
static const char* label_attrs[] = { ATTRS, "for", "accesskey", "onfocus", "onblur", NULL } ;
static const char* legend_attrs[] = { ATTRS, "accesskey", NULL } ;
static const char* align_attr[] = { "align", NULL } ;
static const char* link_attrs[] = { ATTRS, "charset", "href", "hreflang", "type", "rel", "rev", "media", NULL } ;
static const char* map_contents[] = { BLOCK, "area", NULL } ;
static const char* name_attr[] = { "name", NULL } ;
static const char* action_attr[] = { "action", NULL } ;
static const char* blockli_elt[] = { BLOCK, "li", NULL } ;
static const char* meta_attrs[] = { I18N, "http-equiv", "name", "scheme", NULL } ;
static const char* content_attr[] = { "content", NULL } ;
static const char* type_attr[] = { "type", NULL } ;
static const char* noframes_content[] = { "body", FLOW MODIFIER, NULL } ;
static const char* object_contents[] = { FLOW, "param", NULL } ;
static const char* object_attrs[] = { ATTRS, "declare", "classid", "codebase", "data", "type", "codetype", "archive", "standby", "height", "width", "usemap", "name", "tabindex", NULL } ;
static const char* object_depr[] = { "align", "border", "hspace", "vspace", NULL } ;
static const char* ol_attrs[] = { "type", "compact", "start", NULL} ;
static const char* option_elt[] = { "option", NULL } ;
static const char* optgroup_attrs[] = { ATTRS, "disabled", NULL } ;
static const char* option_attrs[] = { ATTRS, "disabled", "label", "selected", "value", NULL } ;
static const char* param_attrs[] = { "id", "value", "valuetype", "type", NULL } ;
static const char* width_attr[] = { "width", NULL } ;
static const char* pre_content[] = { PHRASE, "tt", "i", "b", "u", "s", "strike", "a", "br", "script", "map", "q", "span", "bdo", "iframe", NULL } ;
static const char* script_attrs[] = { "charset", "src", "defer", "event", "for", NULL } ;
static const char* language_attr[] = { "language", NULL } ;
static const char* select_content[] = { "optgroup", "option", NULL } ;
static const char* select_attrs[] = { ATTRS, "name", "size", "multiple", "disabled", "tabindex", "onfocus", "onblur", "onchange", NULL } ;
static const char* style_attrs[] = { I18N, "media", "title", NULL } ;
static const char* table_attrs[] = { ATTRS "summary", "width", "border", "frame", "rules", "cellspacing", "cellpadding", "datapagesize", NULL } ;
static const char* table_depr[] = { "align", "bgcolor", NULL } ;
static const char* table_contents[] = { "caption", "col", "colgroup", "thead", "tfoot", "tbody", "tr", NULL} ;
static const char* tr_elt[] = { "tr", NULL } ;
static const char* talign_attrs[] = { ATTRS, CELLHALIGN, CELLVALIGN, NULL} ;
static const char* th_td_depr[] = { "nowrap", "bgcolor", "width", "height", NULL } ;
static const char* th_td_attr[] = { ATTRS, "abbr", "axis", "headers", "scope", "rowspan", "colspan", CELLHALIGN, CELLVALIGN, NULL } ;
static const char* textarea_attrs[] = { ATTRS, "name", "disabled", "readonly", "tabindex", "accesskey", "onfocus", "onblur", "onselect", "onchange", NULL } ;
static const char* tr_contents[] = { "th", "td", NULL } ;
static const char* bgcolor_attr[] = { "bgcolor", NULL } ;
static const char* li_elt[] = { "li", NULL } ;
static const char* ul_depr[] = { "type", "compact", NULL} ;
static const char* dir_attr[] = { "dir", NULL} ;
#define DECL (const char**)
static const htmlElemDesc
html40ElementTable[] = {
{ "a", 0, 0, 0, 0, 0, 0, 1, "anchor ",
DECL html_inline , NULL , DECL a_attrs , DECL target_attr, NULL
},
{ "abbr", 0, 0, 0, 0, 0, 0, 1, "abbreviated form",
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
},
{ "acronym", 0, 0, 0, 0, 0, 0, 1, "",
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
},
{ "address", 0, 0, 0, 0, 0, 0, 0, "information on author ",
DECL inline_p , NULL , DECL html_attrs, NULL, NULL
},
{ "applet", 0, 0, 0, 0, 1, 1, 2, "java applet ",
DECL flow_param , NULL , NULL , DECL applet_attrs, NULL
},
{ "area", 0, 2, 2, 1, 0, 0, 0, "client-side image map area ",
EMPTY , NULL , DECL area_attrs , DECL target_attr, DECL alt_attr
},
{ "b", 0, 3, 0, 0, 0, 0, 1, "bold text style",
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
},
{ "base", 0, 2, 2, 1, 0, 0, 0, "document base uri ",
EMPTY , NULL , NULL , DECL target_attr, DECL href_attrs
},
{ "basefont", 0, 2, 2, 1, 1, 1, 1, "base font size " ,
EMPTY , NULL , NULL, DECL basefont_attrs, NULL
},
{ "bdo", 0, 0, 0, 0, 0, 0, 1, "i18n bidi over-ride ",
DECL html_inline , NULL , DECL core_i18n_attrs, NULL, DECL dir_attr
},
{ "big", 0, 3, 0, 0, 0, 0, 1, "large text style",
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
},
{ "blockquote", 0, 0, 0, 0, 0, 0, 0, "long quotation ",
DECL html_flow , NULL , DECL quote_attrs , NULL, NULL
},
{ "body", 1, 1, 0, 0, 0, 0, 0, "document body ",
DECL body_contents , "div" , DECL body_attrs, DECL body_depr, NULL
},
{ "br", 0, 2, 2, 1, 0, 0, 1, "forced line break ",
EMPTY , NULL , DECL core_attrs, DECL clear_attrs , NULL
},
{ "button", 0, 0, 0, 0, 0, 0, 2, "push button ",
DECL html_flow MODIFIER , NULL , DECL button_attrs, NULL, NULL
},
{ "caption", 0, 0, 0, 0, 0, 0, 0, "table caption ",
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
},
{ "center", 0, 3, 0, 0, 1, 1, 0, "shorthand for div align=center ",
DECL html_flow , NULL , NULL, DECL html_attrs, NULL
},
{ "cite", 0, 0, 0, 0, 0, 0, 1, "citation",
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
},
{ "code", 0, 0, 0, 0, 0, 0, 1, "computer code fragment",
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
},
{ "col", 0, 2, 2, 1, 0, 0, 0, "table column ",
EMPTY , NULL , DECL col_attrs , NULL, NULL
},
{ "colgroup", 0, 1, 0, 0, 0, 0, 0, "table column group ",
DECL col_elt , "col" , DECL col_attrs , NULL, NULL
},
{ "dd", 0, 1, 0, 0, 0, 0, 0, "definition description ",
DECL html_flow , NULL , DECL html_attrs, NULL, NULL
},
{ "del", 0, 0, 0, 0, 0, 0, 2, "deleted text ",
DECL html_flow , NULL , DECL edit_attrs , NULL, NULL
},
{ "dfn", 0, 0, 0, 0, 0, 0, 1, "instance definition",
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
},
{ "dir", 0, 0, 0, 0, 1, 1, 0, "directory list",
DECL blockli_elt, "li" , NULL, DECL compact_attrs, NULL
},
{ "div", 0, 0, 0, 0, 0, 0, 0, "generic language/style container",
DECL html_flow, NULL, DECL html_attrs, DECL align_attr, NULL
},
{ "dl", 0, 0, 0, 0, 0, 0, 0, "definition list ",
DECL dl_contents , "dd" , html_attrs, DECL compact_attr, NULL
},
{ "dt", 0, 1, 0, 0, 0, 0, 0, "definition term ",
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
},
{ "em", 0, 3, 0, 0, 0, 0, 1, "emphasis",
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
},
{ "fieldset", 0, 0, 0, 0, 0, 0, 0, "form control group ",
DECL fieldset_contents , NULL, DECL html_attrs, NULL, NULL
},
{ "font", 0, 3, 0, 0, 1, 1, 1, "local change to font ",
DECL html_inline, NULL, NULL, DECL font_attrs, NULL
},
{ "form", 0, 0, 0, 0, 0, 0, 0, "interactive form ",
DECL form_contents, "fieldset", DECL form_attrs , DECL target_attr, DECL action_attr
},
{ "frame", 0, 2, 2, 1, 0, 2, 0, "subwindow " ,
EMPTY, NULL, NULL, DECL frame_attrs, NULL
},
{ "frameset", 0, 0, 0, 0, 0, 2, 0, "window subdivision" ,
DECL frameset_contents, "noframes" , NULL , DECL frameset_attrs, NULL
},
{ "h1", 0, 0, 0, 0, 0, 0, 0, "heading ",
DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
},
{ "h2", 0, 0, 0, 0, 0, 0, 0, "heading ",
DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
},
{ "h3", 0, 0, 0, 0, 0, 0, 0, "heading ",
DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
},
{ "h4", 0, 0, 0, 0, 0, 0, 0, "heading ",
DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
},
{ "h5", 0, 0, 0, 0, 0, 0, 0, "heading ",
DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
},
{ "h6", 0, 0, 0, 0, 0, 0, 0, "heading ",
DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
},
{ "head", 1, 1, 0, 0, 0, 0, 0, "document head ",
DECL head_contents, NULL, DECL head_attrs, NULL, NULL
},
{ "hr", 0, 2, 2, 1, 0, 0, 0, "horizontal rule " ,
EMPTY, NULL, DECL html_attrs, DECL hr_depr, NULL
},
{ "html", 1, 1, 0, 0, 0, 0, 0, "document root element ",
DECL html_content , NULL , DECL i18n_attrs, DECL version_attr, NULL
},
{ "i", 0, 3, 0, 0, 0, 0, 1, "italic text style",
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
},
{ "iframe", 0, 0, 0, 0, 0, 1, 2, "inline subwindow ",
DECL html_flow, NULL, NULL, DECL iframe_attrs, NULL
},
{ "img", 0, 2, 2, 1, 0, 0, 1, "embedded image ",
EMPTY, NULL, DECL img_attrs, DECL align_attr, src_alt_attrs
},
{ "input", 0, 2, 2, 1, 0, 0, 1, "form control ",
EMPTY, NULL, DECL input_attrs , DECL align_attr, NULL
},
{ "ins", 0, 0, 0, 0, 0, 0, 2, "inserted text",
DECL html_flow, NULL, DECL edit_attrs, NULL, NULL
},
{ "isindex", 0, 2, 2, 1, 1, 1, 0, "single line prompt ",
EMPTY, NULL, NULL, DECL prompt_attrs, NULL
},
{ "kbd", 0, 0, 0, 0, 0, 0, 1, "text to be entered by the user",
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
},
{ "label", 0, 0, 0, 0, 0, 0, 1, "form field label text ",
DECL html_inline MODIFIER, NULL, DECL label_attrs , NULL, NULL
},
{ "legend", 0, 0, 0, 0, 0, 0, 0, "fieldset legend ",
DECL html_inline, NULL, DECL legend_attrs , DECL align_attr, NULL
},
{ "li", 0, 1, 1, 0, 0, 0, 0, "list item ",
DECL html_flow, NULL, DECL html_attrs, NULL, NULL
},
{ "link", 0, 2, 2, 1, 0, 0, 0, "a media-independent link ",
EMPTY, NULL, DECL link_attrs, DECL target_attr, NULL
},
{ "map", 0, 0, 0, 0, 0, 0, 2, "client-side image map ",
DECL map_contents , NULL, DECL html_attrs , NULL, name_attr
},
{ "menu", 0, 0, 0, 0, 1, 1, 0, "menu list ",
DECL blockli_elt , NULL, NULL, DECL compact_attrs, NULL
},
{ "meta", 0, 2, 2, 1, 0, 0, 0, "generic metainformation ",
EMPTY, NULL, DECL meta_attrs , NULL , DECL content_attr
},
{ "noframes", 0, 0, 0, 0, 0, 2, 0, "alternate content container for non frame-based rendering ",
DECL noframes_content, "body" , DECL html_attrs, NULL, NULL
},
{ "noscript", 0, 0, 0, 0, 0, 0, 0, "alternate content container for non script-based rendering ",
DECL html_flow, "div", DECL html_attrs, NULL, NULL
},
{ "object", 0, 0, 0, 0, 0, 0, 2, "generic embedded object ",
DECL object_contents , "div" , DECL object_attrs, DECL object_depr, NULL
},
{ "ol", 0, 0, 0, 0, 0, 0, 0, "ordered list ",
DECL li_elt , "li" , DECL html_attrs, DECL ol_attrs, NULL
},
{ "optgroup", 0, 0, 0, 0, 0, 0, 0, "option group ",
option_elt , "option", DECL optgroup_attrs, NULL, DECL label_attr
},
{ "option", 0, 1, 0, 0, 0, 0, 0, "selectable choice " ,
DECL html_pcdata, NULL, DECL option_attrs, NULL, NULL
},
{ "p", 0, 1, 0, 0, 0, 0, 0, "paragraph ",
DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
},
{ "param", 0, 2, 2, 1, 0, 0, 0, "named property value ",
EMPTY, NULL, DECL param_attrs, NULL, name_attr
},
{ "pre", 0, 0, 0, 0, 0, 0, 0, "preformatted text ",
DECL pre_content, NULL, DECL html_attrs, DECL width_attr, NULL
},
{ "q", 0, 0, 0, 0, 0, 0, 1, "short inline quotation ",
DECL html_inline, NULL, DECL quote_attrs, NULL, NULL
},
{ "s", 0, 3, 0, 0, 1, 1, 1, "strike-through text style",
DECL html_inline, NULL, NULL, DECL html_attrs, NULL
},
{ "samp", 0, 0, 0, 0, 0, 0, 1, "sample program output, scripts, etc.",
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
},
{ "script", 0, 0, 0, 0, 0, 0, 2, "script statements ",
DECL html_cdata, NULL, DECL script_attrs, DECL language_attr, DECL type_attr
},
{ "select", 0, 0, 0, 0, 0, 0, 1, "option selector ",
DECL select_content, NULL, DECL select_attrs, NULL, NULL
},
{ "small", 0, 3, 0, 0, 0, 0, 1, "small text style",
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
},
{ "span", 0, 0, 0, 0, 0, 0, 1, "generic language/style container ",
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
},
{ "strike", 0, 3, 0, 0, 1, 1, 1, "strike-through text",
DECL html_inline, NULL, NULL, DECL html_attrs, NULL
},
{ "strong", 0, 3, 0, 0, 0, 0, 1, "strong emphasis",
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
},
{ "style", 0, 0, 0, 0, 0, 0, 0, "style info ",
DECL html_cdata, NULL, DECL style_attrs, NULL, DECL type_attr
},
{ "sub", 0, 3, 0, 0, 0, 0, 1, "subscript",
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
},
{ "sup", 0, 3, 0, 0, 0, 0, 1, "superscript ",
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
},
{ "table", 0, 0, 0, 0, 0, 0, 0, "",
DECL table_contents , "tr" , DECL table_attrs , DECL table_depr, NULL
},
{ "tbody", 1, 0, 0, 0, 0, 0, 0, "table body ",
DECL tr_elt , "tr" , DECL talign_attrs, NULL, NULL
},
{ "td", 0, 0, 0, 0, 0, 0, 0, "table data cell",
DECL html_flow, NULL, DECL th_td_attr, DECL th_td_depr, NULL
},
{ "textarea", 0, 0, 0, 0, 0, 0, 1, "multi-line text field ",
DECL html_pcdata, NULL, DECL textarea_attrs, NULL, DECL rows_cols_attr
},
{ "tfoot", 0, 1, 0, 0, 0, 0, 0, "table footer ",
DECL tr_elt , "tr" , DECL talign_attrs, NULL, NULL
},
{ "th", 0, 1, 0, 0, 0, 0, 0, "table header cell",
DECL html_flow, NULL, DECL th_td_attr, DECL th_td_depr, NULL
},
{ "thead", 0, 1, 0, 0, 0, 0, 0, "table header ",
DECL tr_elt , "tr" , DECL talign_attrs, NULL, NULL
},
{ "title", 0, 0, 0, 0, 0, 0, 0, "document title ",
DECL html_pcdata, NULL, DECL i18n_attrs, NULL, NULL
},
{ "tr", 0, 0, 0, 0, 0, 0, 0, "table row ",
DECL tr_contents , "td" , DECL talign_attrs, DECL bgcolor_attr, NULL
},
{ "tt", 0, 3, 0, 0, 0, 0, 1, "teletype or monospaced text style",
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
},
{ "u", 0, 3, 0, 0, 1, 1, 1, "underlined text style",
DECL html_inline, NULL, NULL, DECL html_attrs, NULL
},
{ "ul", 0, 0, 0, 0, 0, 0, 0, "unordered list ",
DECL li_elt , "li" , DECL html_attrs, DECL ul_depr, NULL
},
{ "var", 0, 0, 0, 0, 0, 0, 1, "instance of a variable or program argument",
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
}
};
/*
* start tags that imply the end of current element
*/
static const char *htmlStartClose[] = {
"form", "form", "p", "hr", "h1", "h2", "h3", "h4", "h5", "h6",
"dl", "ul", "ol", "menu", "dir", "address", "pre",
"listing", "xmp", "head", NULL,
"head", "p", NULL,
"title", "p", NULL,
"body", "head", "style", "link", "title", "p", NULL,
"li", "p", "h1", "h2", "h3", "h4", "h5", "h6", "dl", "address",
"pre", "listing", "xmp", "head", "li", NULL,
"hr", "p", "head", NULL,
"h1", "p", "head", NULL,
"h2", "p", "head", NULL,
"h3", "p", "head", NULL,
"h4", "p", "head", NULL,
"h5", "p", "head", NULL,
"h6", "p", "head", NULL,
"dir", "p", "head", NULL,
"address", "p", "head", "ul", NULL,
"pre", "p", "head", "ul", NULL,
"listing", "p", "head", NULL,
"xmp", "p", "head", NULL,
"blockquote", "p", "head", NULL,
"dl", "p", "dt", "menu", "dir", "address", "pre", "listing",
"xmp", "head", NULL,
"dt", "p", "menu", "dir", "address", "pre", "listing", "xmp",
"head", "dd", NULL,
"dd", "p", "menu", "dir", "address", "pre", "listing", "xmp",
"head", "dt", NULL,
"ul", "p", "head", "ol", "menu", "dir", "address", "pre",
"listing", "xmp", NULL,
"ol", "p", "head", "ul", NULL,
"menu", "p", "head", "ul", NULL,
"p", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6", NULL,
"div", "p", "head", NULL,
"noscript", "p", "head", NULL,
"center", "font", "b", "i", "p", "head", NULL,
"a", "a", NULL,
"caption", "p", NULL,
"colgroup", "caption", "colgroup", "col", "p", NULL,
"col", "caption", "col", "p", NULL,
"table", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6", "pre",
"listing", "xmp", "a", NULL,
"th", "th", "td", "p", "span", "font", "a", "b", "i", "u", NULL,
"td", "th", "td", "p", "span", "font", "a", "b", "i", "u", NULL,
"tr", "th", "td", "tr", "caption", "col", "colgroup", "p", NULL,
"thead", "caption", "col", "colgroup", NULL,
"tfoot", "th", "td", "tr", "caption", "col", "colgroup", "thead",
"tbody", "p", NULL,
"tbody", "th", "td", "tr", "caption", "col", "colgroup", "thead",
"tfoot", "tbody", "p", NULL,
"optgroup", "option", NULL,
"option", "option", NULL,
"fieldset", "legend", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6",
"pre", "listing", "xmp", "a", NULL,
NULL
};
/*
* The list of HTML elements which are supposed not to have
* CDATA content and where a p element will be implied
*
* TODO: extend that list by reading the HTML SGML DTD on
* implied paragraph
*/
static const char *htmlNoContentElements[] = {
"html",
"head",
"body",
NULL
};
/*
* The list of HTML attributes which are of content %Script;
* NOTE: when adding ones, check htmlIsScriptAttribute() since
* it assumes the name starts with 'on'
*/
static const char *htmlScriptAttributes[] = {
"onclick",
"ondblclick",
"onmousedown",
"onmouseup",
"onmouseover",
"onmousemove",
"onmouseout",
"onkeypress",
"onkeydown",
"onkeyup",
"onload",
"onunload",
"onfocus",
"onblur",
"onsubmit",
"onrest",
"onchange",
"onselect"
};
/*
* This table is used by the htmlparser to know what to do with
* broken html pages. By assigning different priorities to different
* elements the parser can decide how to handle extra endtags.
* Endtags are only allowed to close elements with lower or equal
* priority.
*/
typedef struct {
const char *name;
int priority;
} elementPriority;
static const elementPriority htmlEndPriority[] = {
{"div", 150},
{"td", 160},
{"th", 160},
{"tr", 170},
{"thead", 180},
{"tbody", 180},
{"tfoot", 180},
{"table", 190},
{"head", 200},
{"body", 200},
{"html", 220},
{NULL, 100} /* Default priority */
};
static const char** htmlStartCloseIndex[100];
static int htmlStartCloseIndexinitialized = 0;
/************************************************************************
* *
* functions to handle HTML specific data *
* *
************************************************************************/
/**
* htmlInitAutoClose:
*
* Initialize the htmlStartCloseIndex for fast lookup of closing tags names.