From a0351b093f43f9c2be5b45d6e08542adb4de419a Mon Sep 17 00:00:00 2001 From: Sterling Hughes Date: Tue, 6 May 2003 19:38:49 +0000 Subject: Bundle libxml and add compatibility layer --- bundle/libxml/HTMLparser.c | 5013 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 5013 insertions(+) create mode 100644 bundle/libxml/HTMLparser.c (limited to 'bundle/libxml/HTMLparser.c') diff --git a/bundle/libxml/HTMLparser.c b/bundle/libxml/HTMLparser.c new file mode 100644 index 0000000000..7db3e9e3a8 --- /dev/null +++ b/bundle/libxml/HTMLparser.c @@ -0,0 +1,5013 @@ +/* + * HTMLparser.c : an HTML 4.0 non-verifying parser + * + * See Copyright for the status of this software. + * + * daniel@veillard.com + */ + +#define IN_LIBXML +#include "libxml.h" +#ifdef LIBXML_HTML_ENABLED + +#include +#ifdef HAVE_CTYPE_H +#include +#endif +#ifdef HAVE_STDLIB_H +#include +#endif +#ifdef HAVE_SYS_STAT_H +#include +#endif +#ifdef HAVE_FCNTL_H +#include +#endif +#ifdef HAVE_UNISTD_H +#include +#endif +#ifdef HAVE_ZLIB_H +#include +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#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); + +/************************************************************************ + * * + * 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, xmlChar * value) +{ + if (ctxt->nameNr >= ctxt->nameMax) { + ctxt->nameMax *= 2; + ctxt->nameTab = + (xmlChar * *)xmlRealloc(ctxt->nameTab, + ctxt->nameMax * + sizeof(ctxt->nameTab[0])); + if (ctxt->nameTab == NULL) { + xmlGenericError(xmlGenericErrorContext, "realloc failed !\n"); + 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 xmlChar * +htmlnamePop(htmlParserCtxtPtr ctxt) +{ + 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 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. + * 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) + +#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),ctxt->nbChars++ + +#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)) { + ctxt->errNo = XML_ERR_INVALID_ENCODING; + if ((ctxt->sax != NULL) && + (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, + "Char 0x%X out of allowed range\n", val); + ctxt->wellFormed = 0; + if (ctxt->recovery == 0) ctxt->disableSAX = 1; + } + 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 !) + */ + ctxt->errNo = XML_ERR_INVALID_ENCODING; + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) { + ctxt->sax->error(ctxt->userData, + "Input is not proper UTF-8, indicate encoding !\n"); + 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 + */ +static const htmlElemDesc +html40ElementTable[] = { +{ "a", 0, 0, 0, 0, 0, 0, 1, "anchor " }, +{ "abbr", 0, 0, 0, 0, 0, 0, 1, "abbreviated form" }, +{ "acronym", 0, 0, 0, 0, 0, 0, 1, "" }, +{ "address", 0, 0, 0, 0, 0, 0, 0, "information on author " }, +{ "applet", 0, 0, 0, 0, 1, 1, 2, "java applet " }, +{ "area", 0, 2, 2, 1, 0, 0, 0, "client-side image map area " }, +{ "b", 0, 3, 0, 0, 0, 0, 1, "bold text style" }, +{ "base", 0, 2, 2, 1, 0, 0, 0, "document base uri " }, +{ "basefont", 0, 2, 2, 1, 1, 1, 1, "base font size " }, +{ "bdo", 0, 0, 0, 0, 0, 0, 1, "i18n bidi over-ride " }, +{ "big", 0, 3, 0, 0, 0, 0, 1, "large text style" }, +{ "blockquote", 0, 0, 0, 0, 0, 0, 0, "long quotation " }, +{ "body", 1, 1, 0, 0, 0, 0, 0, "document body " }, +{ "br", 0, 2, 2, 1, 0, 0, 1, "forced line break " }, +{ "button", 0, 0, 0, 0, 0, 0, 2, "push button " }, +{ "caption", 0, 0, 0, 0, 0, 0, 0, "table caption " }, +{ "center", 0, 3, 0, 0, 1, 1, 0, "shorthand for div align=center " }, +{ "cite", 0, 0, 0, 0, 0, 0, 1, "citation" }, +{ "code", 0, 0, 0, 0, 0, 0, 1, "computer code fragment" }, +{ "col", 0, 2, 2, 1, 0, 0, 0, "table column " }, +{ "colgroup", 0, 1, 0, 0, 0, 0, 0, "table column group " }, +{ "dd", 0, 1, 0, 0, 0, 0, 0, "definition description " }, +{ "del", 0, 0, 0, 0, 0, 0, 2, "deleted text " }, +{ "dfn", 0, 0, 0, 0, 0, 0, 1, "instance definition" }, +{ "dir", 0, 0, 0, 0, 1, 1, 0, "directory list" }, +{ "div", 0, 0, 0, 0, 0, 0, 0, "generic language/style container"}, +{ "dl", 0, 0, 0, 0, 0, 0, 0, "definition list " }, +{ "dt", 0, 1, 0, 0, 0, 0, 0, "definition term " }, +{ "em", 0, 3, 0, 0, 0, 0, 1, "emphasis" }, +{ "fieldset", 0, 0, 0, 0, 0, 0, 0, "form control group " }, +{ "font", 0, 3, 0, 0, 1, 1, 1, "local change to font " }, +{ "form", 0, 0, 0, 0, 0, 0, 0, "interactive form " }, +{ "frame", 0, 2, 2, 1, 0, 2, 0, "subwindow " }, +{ "frameset", 0, 0, 0, 0, 0, 2, 0, "window subdivision" }, +{ "h1", 0, 0, 0, 0, 0, 0, 0, "heading " }, +{ "h2", 0, 0, 0, 0, 0, 0, 0, "heading " }, +{ "h3", 0, 0, 0, 0, 0, 0, 0, "heading " }, +{ "h4", 0, 0, 0, 0, 0, 0, 0, "heading " }, +{ "h5", 0, 0, 0, 0, 0, 0, 0, "heading " }, +{ "h6", 0, 0, 0, 0, 0, 0, 0, "heading " }, +{ "head", 1, 1, 0, 0, 0, 0, 0, "document head " }, +{ "hr", 0, 2, 2, 1, 0, 0, 0, "horizontal rule " }, +{ "html", 1, 1, 0, 0, 0, 0, 0, "document root element " }, +{ "i", 0, 3, 0, 0, 0, 0, 1, "italic text style" }, +{ "iframe", 0, 0, 0, 0, 0, 1, 2, "inline subwindow " }, +{ "img", 0, 2, 2, 1, 0, 0, 1, "embedded image " }, +{ "input", 0, 2, 2, 1, 0, 0, 1, "form control " }, +{ "ins", 0, 0, 0, 0, 0, 0, 2, "inserted text" }, +{ "isindex", 0, 2, 2, 1, 1, 1, 0, "single line prompt " }, +{ "kbd", 0, 0, 0, 0, 0, 0, 1, "text to be entered by the user" }, +{ "label", 0, 0, 0, 0, 0, 0, 1, "form field label text " }, +{ "legend", 0, 0, 0, 0, 0, 0, 0, "fieldset legend " }, +{ "li", 0, 1, 1, 0, 0, 0, 0, "list item " }, +{ "link", 0, 2, 2, 1, 0, 0, 0, "a media-independent link " }, +{ "map", 0, 0, 0, 0, 0, 0, 2, "client-side image map " }, +{ "menu", 0, 0, 0, 0, 1, 1, 0, "menu list " }, +{ "meta", 0, 2, 2, 1, 0, 0, 0, "generic metainformation " }, +{ "noframes", 0, 0, 0, 0, 0, 2, 0, "alternate content container for non frame-based rendering " }, +{ "noscript", 0, 0, 0, 0, 0, 0, 0, "alternate content container for non script-based rendering " }, +{ "object", 0, 0, 0, 0, 0, 0, 2, "generic embedded object " }, +{ "ol", 0, 0, 0, 0, 0, 0, 0, "ordered list " }, +{ "optgroup", 0, 0, 0, 0, 0, 0, 0, "option group " }, +{ "option", 0, 1, 0, 0, 0, 0, 0, "selectable choice " }, +{ "p", 0, 1, 0, 0, 0, 0, 0, "paragraph " }, +{ "param", 0, 2, 2, 1, 0, 0, 0, "named property value " }, +{ "pre", 0, 0, 0, 0, 0, 0, 0, "preformatted text " }, +{ "q", 0, 0, 0, 0, 0, 0, 1, "short inline quotation " }, +{ "s", 0, 3, 0, 0, 1, 1, 1, "strike-through text style" }, +{ "samp", 0, 0, 0, 0, 0, 0, 1, "sample program output, scripts, etc." }, +{ "script", 0, 0, 0, 0, 0, 0, 2, "script statements " }, +{ "select", 0, 0, 0, 0, 0, 0, 1, "option selector " }, +{ "small", 0, 3, 0, 0, 0, 0, 1, "small text style" }, +{ "span", 0, 0, 0, 0, 0, 0, 1, "generic language/style container " }, +{ "strike", 0, 3, 0, 0, 1, 1, 1, "strike-through text" }, +{ "strong", 0, 3, 0, 0, 0, 0, 1, "strong emphasis" }, +{ "style", 0, 0, 0, 0, 0, 0, 0, "style info " }, +{ "sub", 0, 3, 0, 0, 0, 0, 1, "subscript" }, +{ "sup", 0, 3, 0, 0, 0, 0, 1, "superscript " }, +{ "table", 0, 0, 0, 0, 0, 0, 0, " " }, +{ "tbody", 1, 0, 0, 0, 0, 0, 0, "table body " }, +{ "td", 0, 0, 0, 0, 0, 0, 0, "table data cell" }, +{ "textarea", 0, 0, 0, 0, 0, 0, 1, "multi-line text field " }, +{ "tfoot", 0, 1, 0, 0, 0, 0, 0, "table footer " }, +{ "th", 0, 1, 0, 0, 0, 0, 0, "table header cell" }, +{ "thead", 0, 1, 0, 0, 0, 0, 0, "table header " }, +{ "title", 0, 0, 0, 0, 0, 0, 0, "document title " }, +{ "tr", 0, 0, 0, 0, 0, 0, 0, "table row " }, +{ "tt", 0, 3, 0, 0, 0, 0, 1, "teletype or monospaced text style" }, +{ "u", 0, 3, 0, 0, 1, 1, 1, "underlined text style" }, +{ "ul", 0, 0, 0, 0, 0, 0, 0, "unordered list " }, +{ "var", 0, 0, 0, 0, 0, 0, 1, "instance of a variable or program argument" }, +}; + +/* + * 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. + * This is not reentrant. Call xmlInitParser() once before processing in + * case of use in multithreaded programs. + */ +void +htmlInitAutoClose(void) { + int indx, i = 0; + + if (htmlStartCloseIndexinitialized) return; + + for (indx = 0;indx < 100;indx ++) htmlStartCloseIndex[indx] = NULL; + indx = 0; + while ((htmlStartClose[i] != NULL) && (indx < 100 - 1)) { + htmlStartCloseIndex[indx++] = &htmlStartClose[i]; + while (htmlStartClose[i] != NULL) i++; + i++; + } + htmlStartCloseIndexinitialized = 1; +} + +/** + * htmlTagLookup: + * @tag: The tag name in lowercase + * + * Lookup the HTML tag in the ElementTable + * + * Returns the related htmlElemDescPtr or NULL if not found. + */ +const htmlElemDesc * +htmlTagLookup(const xmlChar *tag) { + unsigned int i; + + for (i = 0; i < (sizeof(html40ElementTable) / + sizeof(html40ElementTable[0]));i++) { + if (!xmlStrcasecmp(tag, BAD_CAST html40ElementTable[i].name)) + return((const htmlElemDescPtr) (const htmlElemDescPtr) (const htmlElemDescPtr) (const htmlElemDescPtr) (const htmlElemDescPtr) (const htmlElemDescPtr) (const htmlElemDescPtr) (const htmlElemDescPtr) (const htmlElemDescPtr) &html40ElementTable[i]); + } + return(NULL); +} + +/** + * htmlGetEndPriority: + * @name: The name of the element to look up the priority for. + * + * Return value: The "endtag" priority. + **/ +static int +htmlGetEndPriority (const xmlChar *name) { + int i = 0; + + while ((htmlEndPriority[i].name != NULL) && + (!xmlStrEqual((const xmlChar *)htmlEndPriority[i].name, name))) + i++; + + return(htmlEndPriority[i].priority); +} + +/** + * htmlCheckAutoClose: + * @newtag: The new tag name + * @oldtag: The old tag name + * + * Checks whether the new tag is one of the registered valid tags for + * closing old. + * Initialize the htmlStartCloseIndex for fast lookup of closing tags names. + * + * Returns 0 if no, 1 if yes. + */ +static int +htmlCheckAutoClose(const xmlChar *newtag, const xmlChar *oldtag) { + int i, indx; + const char **closed = NULL; + + if (htmlStartCloseIndexinitialized == 0) htmlInitAutoClose(); + + /* inefficient, but not a big deal */ + for (indx = 0; indx < 100;indx++) { + closed = htmlStartCloseIndex[indx]; + if (closed == NULL) return(0); + if (xmlStrEqual(BAD_CAST *closed, newtag)) break; + } + + i = closed - htmlStartClose; + i++; + while (htmlStartClose[i] != NULL) { + if (xmlStrEqual(BAD_CAST htmlStartClose[i], oldtag)) { + return(1); + } + i++; + } + return(0); +} + +/** + * htmlAutoCloseOnClose: + * @ctxt: an HTML parser context + * @newtag: The new tag name + * @force: force the tag closure + * + * The HTML DTD allows an ending tag to implicitly close other tags. + */ +static void +htmlAutoCloseOnClose(htmlParserCtxtPtr ctxt, const xmlChar *newtag) { + const htmlElemDesc * info; + xmlChar *oldname; + int i, priority; + +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"Close of %s stack: %d elements\n", newtag, ctxt->nameNr); + for (i = 0;i < ctxt->nameNr;i++) + xmlGenericError(xmlGenericErrorContext,"%d : %s\n", i, ctxt->nameTab[i]); +#endif + + priority = htmlGetEndPriority (newtag); + + for (i = (ctxt->nameNr - 1);i >= 0;i--) { + + if (xmlStrEqual(newtag, ctxt->nameTab[i])) break; + /* + * A missplaced endtag can only close elements with lower + * or equal priority, so if we find an element with higher + * priority before we find an element with + * matching name, we just ignore this endtag + */ + if (htmlGetEndPriority (ctxt->nameTab[i]) > priority) return; + } + if (i < 0) return; + + while (!xmlStrEqual(newtag, ctxt->name)) { + info = htmlTagLookup(ctxt->name); + if ((info == NULL) || (info->endTag == 1)) { +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"htmlAutoCloseOnClose: %s closes %s\n", newtag, ctxt->name); +#endif + } else if (info->endTag == 3) { +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"End of tag %s: expecting %s\n", newtag, ctxt->name); + +#endif + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, + "Opening and ending tag mismatch: %s and %s\n", + newtag, ctxt->name); + ctxt->wellFormed = 0; + } + if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) + ctxt->sax->endElement(ctxt->userData, ctxt->name); + oldname = htmlnamePop(ctxt); + if (oldname != NULL) { +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"htmlAutoCloseOnClose: popped %s\n", oldname); +#endif + xmlFree(oldname); + } + } +} + +/** + * htmlAutoCloseOnEnd: + * @ctxt: an HTML parser context + * + * Close all remaining tags at the end of the stream + */ +static void +htmlAutoCloseOnEnd(htmlParserCtxtPtr ctxt) { + xmlChar *oldname; + int i; + + if (ctxt->nameNr == 0) + return; +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"Close of stack: %d elements\n", ctxt->nameNr); +#endif + + for (i = (ctxt->nameNr - 1);i >= 0;i--) { +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"%d : %s\n", i, ctxt->nameTab[i]); +#endif + if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) + ctxt->sax->endElement(ctxt->userData, ctxt->name); + oldname = htmlnamePop(ctxt); + if (oldname != NULL) { +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"htmlAutoCloseOnEnd: popped %s\n", oldname); +#endif + xmlFree(oldname); + } + } +} + +/** + * htmlAutoClose: + * @ctxt: an HTML parser context + * @newtag: The new tag name or NULL + * + * The HTML DTD allows a tag to implicitly close other tags. + * The list is kept in htmlStartClose array. This function is + * called when a new tag has been detected and generates the + * appropriates closes if possible/needed. + * If newtag is NULL this mean we are at the end of the resource + * and we should check + */ +static void +htmlAutoClose(htmlParserCtxtPtr ctxt, const xmlChar *newtag) { + xmlChar *oldname; + while ((newtag != NULL) && (ctxt->name != NULL) && + (htmlCheckAutoClose(newtag, ctxt->name))) { +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"htmlAutoClose: %s closes %s\n", newtag, ctxt->name); +#endif + if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) + ctxt->sax->endElement(ctxt->userData, ctxt->name); + oldname = htmlnamePop(ctxt); + if (oldname != NULL) { +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"htmlAutoClose: popped %s\n", oldname); +#endif + xmlFree(oldname); + } + } + if (newtag == NULL) { + htmlAutoCloseOnEnd(ctxt); + return; + } + while ((newtag == NULL) && (ctxt->name != NULL) && + ((xmlStrEqual(ctxt->name, BAD_CAST"head")) || + (xmlStrEqual(ctxt->name, BAD_CAST"body")) || + (xmlStrEqual(ctxt->name, BAD_CAST"html")))) { +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"htmlAutoClose: EOF closes %s\n", ctxt->name); +#endif + if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) + ctxt->sax->endElement(ctxt->userData, ctxt->name); + oldname = htmlnamePop(ctxt); + if (oldname != NULL) { +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"htmlAutoClose: popped %s\n", oldname); +#endif + xmlFree(oldname); + } + } + +} + +/** + * htmlAutoCloseTag: + * @doc: the HTML document + * @name: The tag name + * @elem: the HTML element + * + * The HTML DTD allows a tag to implicitly close other tags. + * The list is kept in htmlStartClose array. This function checks + * if the element or one of it's children would autoclose the + * given tag. + * + * Returns 1 if autoclose, 0 otherwise + */ +int +htmlAutoCloseTag(htmlDocPtr doc, const xmlChar *name, htmlNodePtr elem) { + htmlNodePtr child; + + if (elem == NULL) return(1); + if (xmlStrEqual(name, elem->name)) return(0); + if (htmlCheckAutoClose(elem->name, name)) return(1); + child = elem->children; + while (child != NULL) { + if (htmlAutoCloseTag(doc, name, child)) return(1); + child = child->next; + } + return(0); +} + +/** + * htmlIsAutoClosed: + * @doc: the HTML document + * @elem: the HTML element + * + * The HTML DTD allows a tag to implicitly close other tags. + * The list is kept in htmlStartClose array. This function checks + * if a tag is autoclosed by one of it's child + * + * Returns 1 if autoclosed, 0 otherwise + */ +int +htmlIsAutoClosed(htmlDocPtr doc, htmlNodePtr elem) { + htmlNodePtr child; + + if (elem == NULL) return(1); + child = elem->children; + while (child != NULL) { + if (htmlAutoCloseTag(doc, elem->name, child)) return(1); + child = child->next; + } + return(0); +} + +/** + * htmlCheckImplied: + * @ctxt: an HTML parser context + * @newtag: The new tag name + * + * The HTML DTD allows a tag to exists only implicitly + * called when a new tag has been detected and generates the + * appropriates implicit tags if missing + */ +static void +htmlCheckImplied(htmlParserCtxtPtr ctxt, const xmlChar *newtag) { + if (!htmlOmittedDefaultValue) + return; + if (xmlStrEqual(newtag, BAD_CAST"html")) + return; + if (ctxt->nameNr <= 0) { +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"Implied element html: pushed html\n"); +#endif + htmlnamePush(ctxt, xmlStrdup(BAD_CAST"html")); + if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL)) + ctxt->sax->startElement(ctxt->userData, BAD_CAST"html", NULL); + } + if ((xmlStrEqual(newtag, BAD_CAST"body")) || (xmlStrEqual(newtag, BAD_CAST"head"))) + return; + if ((ctxt->nameNr <= 1) && + ((xmlStrEqual(newtag, BAD_CAST"script")) || + (xmlStrEqual(newtag, BAD_CAST"style")) || + (xmlStrEqual(newtag, BAD_CAST"meta")) || + (xmlStrEqual(newtag, BAD_CAST"link")) || + (xmlStrEqual(newtag, BAD_CAST"title")) || + (xmlStrEqual(newtag, BAD_CAST"base")))) { + /* + * dropped OBJECT ... i you put it first BODY will be + * assumed ! + */ +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"Implied element head: pushed head\n"); +#endif + htmlnamePush(ctxt, xmlStrdup(BAD_CAST"head")); + if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL)) + ctxt->sax->startElement(ctxt->userData, BAD_CAST"head", NULL); + } else if ((!xmlStrEqual(newtag, BAD_CAST"noframes")) && + (!xmlStrEqual(newtag, BAD_CAST"frame")) && + (!xmlStrEqual(newtag, BAD_CAST"frameset"))) { + int i; + for (i = 0;i < ctxt->nameNr;i++) { + if (xmlStrEqual(ctxt->nameTab[i], BAD_CAST"body")) { + return; + } + if (xmlStrEqual(ctxt->nameTab[i], BAD_CAST"head")) { + return; + } + } + +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"Implied element body: pushed body\n"); +#endif + htmlnamePush(ctxt, xmlStrdup(BAD_CAST"body")); + if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL)) + ctxt->sax->startElement(ctxt->userData, BAD_CAST"body", NULL); + } +} + +/** + * htmlCheckParagraph + * @ctxt: an HTML parser context + * + * Check whether a p element need to be implied before inserting + * characters in the current element. + * + * Returns 1 if a paragraph has been inserted, 0 if not and -1 + * in case of error. + */ + +static int +htmlCheckParagraph(htmlParserCtxtPtr ctxt) { + const xmlChar *tag; + int i; + + if (ctxt == NULL) + return(-1); + tag = ctxt->name; + if (tag == NULL) { + htmlAutoClose(ctxt, BAD_CAST"p"); + htmlCheckImplied(ctxt, BAD_CAST"p"); + htmlnamePush(ctxt, xmlStrdup(BAD_CAST"p")); + if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL)) + ctxt->sax->startElement(ctxt->userData, BAD_CAST"p", NULL); + return(1); + } + if (!htmlOmittedDefaultValue) + return(0); + for (i = 0; htmlNoContentElements[i] != NULL; i++) { + if (xmlStrEqual(tag, BAD_CAST htmlNoContentElements[i])) { +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"Implied element paragraph\n"); +#endif + htmlAutoClose(ctxt, BAD_CAST"p"); + htmlCheckImplied(ctxt, BAD_CAST"p"); + htmlnamePush(ctxt, xmlStrdup(BAD_CAST"p")); + if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL)) + ctxt->sax->startElement(ctxt->userData, BAD_CAST"p", NULL); + return(1); + } + } + return(0); +} + +/** + * htmlIsScriptAttribute: + * @name: an attribute name + * + * Check if an attribute is of content type Script + * + * Returns 1 is the attribute is a script 0 otherwise + */ +int +htmlIsScriptAttribute(const xmlChar *name) { + unsigned int i; + + if (name == NULL) + return(0); + /* + * all script attributes start with 'on' + */ + if ((name[0] != 'o') || (name[1] != 'n')) + return(0); + for (i = 0; + i < sizeof(htmlScriptAttributes)/sizeof(htmlScriptAttributes[0]); + i++) { + if (xmlStrEqual(name, (const xmlChar *) htmlScriptAttributes[i])) + return(1); + } + return(0); +} + +/************************************************************************ + * * + * The list of HTML predefined entities * + * * + ************************************************************************/ + + +static const htmlEntityDesc html40EntitiesTable[] = { +/* + * the 4 absolute ones, plus apostrophe. + */ +{ 34, "quot", "quotation mark = APL quote, U+0022 ISOnum" }, +{ 38, "amp", "ampersand, U+0026 ISOnum" }, +{ 39, "apos", "single quote" }, +{ 60, "lt", "less-than sign, U+003C ISOnum" }, +{ 62, "gt", "greater-than sign, U+003E ISOnum" }, + +/* + * A bunch still in the 128-255 range + * Replacing them depend really on the charset used. + */ +{ 160, "nbsp", "no-break space = non-breaking space, U+00A0 ISOnum" }, +{ 161, "iexcl","inverted exclamation mark, U+00A1 ISOnum" }, +{ 162, "cent", "cent sign, U+00A2 ISOnum" }, +{ 163, "pound","pound sign, U+00A3 ISOnum" }, +{ 164, "curren","currency sign, U+00A4 ISOnum" }, +{ 165, "yen", "yen sign = yuan sign, U+00A5 ISOnum" }, +{ 166, "brvbar","broken bar = broken vertical bar, U+00A6 ISOnum" }, +{ 167, "sect", "section sign, U+00A7 ISOnum" }, +{ 168, "uml", "diaeresis = spacing diaeresis, U+00A8 ISOdia" }, +{ 169, "copy", "copyright sign, U+00A9 ISOnum" }, +{ 170, "ordf", "feminine ordinal indicator, U+00AA ISOnum" }, +{ 171, "laquo","left-pointing double angle quotation mark = left pointing guillemet, U+00AB ISOnum" }, +{ 172, "not", "not sign, U+00AC ISOnum" }, +{ 173, "shy", "soft hyphen = discretionary hyphen, U+00AD ISOnum" }, +{ 174, "reg", "registered sign = registered trade mark sign, U+00AE ISOnum" }, +{ 175, "macr", "macron = spacing macron = overline = APL overbar, U+00AF ISOdia" }, +{ 176, "deg", "degree sign, U+00B0 ISOnum" }, +{ 177, "plusmn","plus-minus sign = plus-or-minus sign, U+00B1 ISOnum" }, +{ 178, "sup2", "superscript two = superscript digit two = squared, U+00B2 ISOnum" }, +{ 179, "sup3", "superscript three = superscript digit three = cubed, U+00B3 ISOnum" }, +{ 180, "acute","acute accent = spacing acute, U+00B4 ISOdia" }, +{ 181, "micro","micro sign, U+00B5 ISOnum" }, +{ 182, "para", "pilcrow sign = paragraph sign, U+00B6 ISOnum" }, +{ 183, "middot","middle dot = Georgian comma Greek middle dot, U+00B7 ISOnum" }, +{ 184, "cedil","cedilla = spacing cedilla, U+00B8 ISOdia" }, +{ 185, "sup1", "superscript one = superscript digit one, U+00B9 ISOnum" }, +{ 186, "ordm", "masculine ordinal indicator, U+00BA ISOnum" }, +{ 187, "raquo","right-pointing double angle quotation mark right pointing guillemet, U+00BB ISOnum" }, +{ 188, "frac14","vulgar fraction one quarter = fraction one quarter, U+00BC ISOnum" }, +{ 189, "frac12","vulgar fraction one half = fraction one half, U+00BD ISOnum" }, +{ 190, "frac34","vulgar fraction three quarters = fraction three quarters, U+00BE ISOnum" }, +{ 191, "iquest","inverted question mark = turned question mark, U+00BF ISOnum" }, +{ 192, "Agrave","latin capital letter A with grave = latin capital letter A grave, U+00C0 ISOlat1" }, +{ 193, "Aacute","latin capital letter A with acute, U+00C1 ISOlat1" }, +{ 194, "Acirc","latin capital letter A with circumflex, U+00C2 ISOlat1" }, +{ 195, "Atilde","latin capital letter A with tilde, U+00C3 ISOlat1" }, +{ 196, "Auml", "latin capital letter A with diaeresis, U+00C4 ISOlat1" }, +{ 197, "Aring","latin capital letter A with ring above = latin capital letter A ring, U+00C5 ISOlat1" }, +{ 198, "AElig","latin capital letter AE = latin capital ligature AE, U+00C6 ISOlat1" }, +{ 199, "Ccedil","latin capital letter C with cedilla, U+00C7 ISOlat1" }, +{ 200, "Egrave","latin capital letter E with grave, U+00C8 ISOlat1" }, +{ 201, "Eacute","latin capital letter E with acute, U+00C9 ISOlat1" }, +{ 202, "Ecirc","latin capital letter E with circumflex, U+00CA ISOlat1" }, +{ 203, "Euml", "latin capital letter E with diaeresis, U+00CB ISOlat1" }, +{ 204, "Igrave","latin capital letter I with grave, U+00CC ISOlat1" }, +{ 205, "Iacute","latin capital letter I with acute, U+00CD ISOlat1" }, +{ 206, "Icirc","latin capital letter I with circumflex, U+00CE ISOlat1" }, +{ 207, "Iuml", "latin capital letter I with diaeresis, U+00CF ISOlat1" }, +{ 208, "ETH", "latin capital letter ETH, U+00D0 ISOlat1" }, +{ 209, "Ntilde","latin capital letter N with tilde, U+00D1 ISOlat1" }, +{ 210, "Ograve","latin capital letter O with grave, U+00D2 ISOlat1" }, +{ 211, "Oacute","latin capital letter O with acute, U+00D3 ISOlat1" }, +{ 212, "Ocirc","latin capital letter O with circumflex, U+00D4 ISOlat1" }, +{ 213, "Otilde","latin capital letter O with tilde, U+00D5 ISOlat1" }, +{ 214, "Ouml", "latin capital letter O with diaeresis, U+00D6 ISOlat1" }, +{ 215, "times","multiplication sign, U+00D7 ISOnum" }, +{ 216, "Oslash","latin capital letter O with stroke latin capital letter O slash, U+00D8 ISOlat1" }, +{ 217, "Ugrave","latin capital letter U with grave, U+00D9 ISOlat1" }, +{ 218, "Uacute","latin capital letter U with acute, U+00DA ISOlat1" }, +{ 219, "Ucirc","latin capital letter U with circumflex, U+00DB ISOlat1" }, +{ 220, "Uuml", "latin capital letter U with diaeresis, U+00DC ISOlat1" }, +{ 221, "Yacute","latin capital letter Y with acute, U+00DD ISOlat1" }, +{ 222, "THORN","latin capital letter THORN, U+00DE ISOlat1" }, +{ 223, "szlig","latin small letter sharp s = ess-zed, U+00DF ISOlat1" }, +{ 224, "agrave","latin small letter a with grave = latin small letter a grave, U+00E0 ISOlat1" }, +{ 225, "aacute","latin small letter a with acute, U+00E1 ISOlat1" }, +{ 226, "acirc","latin small letter a with circumflex, U+00E2 ISOlat1" }, +{ 227, "atilde","latin small letter a with tilde, U+00E3 ISOlat1" }, +{ 228, "auml", "latin small letter a with diaeresis, U+00E4 ISOlat1" }, +{ 229, "aring","latin small letter a with ring above = latin small letter a ring, U+00E5 ISOlat1" }, +{ 230, "aelig","latin small letter ae = latin small ligature ae, U+00E6 ISOlat1" }, +{ 231, "ccedil","latin small letter c with cedilla, U+00E7 ISOlat1" }, +{ 232, "egrave","latin small letter e with grave, U+00E8 ISOlat1" }, +{ 233, "eacute","latin small letter e with acute, U+00E9 ISOlat1" }, +{ 234, "ecirc","latin small letter e with circumflex, U+00EA ISOlat1" }, +{ 235, "euml", "latin small letter e with diaeresis, U+00EB ISOlat1" }, +{ 236, "igrave","latin small letter i with grave, U+00EC ISOlat1" }, +{ 237, "iacute","latin small letter i with acute, U+00ED ISOlat1" }, +{ 238, "icirc","latin small letter i with circumflex, U+00EE ISOlat1" }, +{ 239, "iuml", "latin small letter i with diaeresis, U+00EF ISOlat1" }, +{ 240, "eth", "latin small letter eth, U+00F0 ISOlat1" }, +{ 241, "ntilde","latin small letter n with tilde, U+00F1 ISOlat1" }, +{ 242, "ograve","latin small letter o with grave, U+00F2 ISOlat1" }, +{ 243, "oacute","latin small letter o with acute, U+00F3 ISOlat1" }, +{ 244, "ocirc","latin small letter o with circumflex, U+00F4 ISOlat1" }, +{ 245, "otilde","latin small letter o with tilde, U+00F5 ISOlat1" }, +{ 246, "ouml", "latin small letter o with diaeresis, U+00F6 ISOlat1" }, +{ 247, "divide","division sign, U+00F7 ISOnum" }, +{ 248, "oslash","latin small letter o with stroke, = latin small letter o slash, U+00F8 ISOlat1" }, +{ 249, "ugrave","latin small letter u with grave, U+00F9 ISOlat1" }, +{ 250, "uacute","latin small letter u with acute, U+00FA ISOlat1" }, +{ 251, "ucirc","latin small letter u with circumflex, U+00FB ISOlat1" }, +{ 252, "uuml", "latin small letter u with diaeresis, U+00FC ISOlat1" }, +{ 253, "yacute","latin small letter y with acute, U+00FD ISOlat1" }, +{ 254, "thorn","latin small letter thorn with, U+00FE ISOlat1" }, +{ 255, "yuml", "latin small letter y with diaeresis, U+00FF ISOlat1" }, + +{ 338, "OElig","latin capital ligature OE, U+0152 ISOlat2" }, +{ 339, "oelig","latin small ligature oe, U+0153 ISOlat2" }, +{ 352, "Scaron","latin capital letter S with caron, U+0160 ISOlat2" }, +{ 353, "scaron","latin small letter s with caron, U+0161 ISOlat2" }, +{ 376, "Yuml", "latin capital letter Y with diaeresis, U+0178 ISOlat2" }, + +/* + * Anything below should really be kept as entities references + */ +{ 402, "fnof", "latin small f with hook = function = florin, U+0192 ISOtech" }, + +{ 710, "circ", "modifier letter circumflex accent, U+02C6 ISOpub" }, +{ 732, "tilde","small tilde, U+02DC ISOdia" }, + +{ 913, "Alpha","greek capital letter alpha, U+0391" }, +{ 914, "Beta", "greek capital letter beta, U+0392" }, +{ 915, "Gamma","greek capital letter gamma, U+0393 ISOgrk3" }, +{ 916, "Delta","greek capital letter delta, U+0394 ISOgrk3" }, +{ 917, "Epsilon","greek capital letter epsilon, U+0395" }, +{ 918, "Zeta", "greek capital letter zeta, U+0396" }, +{ 919, "Eta", "greek capital letter eta, U+0397" }, +{ 920, "Theta","greek capital letter theta, U+0398 ISOgrk3" }, +{ 921, "Iota", "greek capital letter iota, U+0399" }, +{ 922, "Kappa","greek capital letter kappa, U+039A" }, +{ 923, "Lambda", "greek capital letter lambda, U+039B ISOgrk3" }, +{ 924, "Mu", "greek capital letter mu, U+039C" }, +{ 925, "Nu", "greek capital letter nu, U+039D" }, +{ 926, "Xi", "greek capital letter xi, U+039E ISOgrk3" }, +{ 927, "Omicron","greek capital letter omicron, U+039F" }, +{ 928, "Pi", "greek capital letter pi, U+03A0 ISOgrk3" }, +{ 929, "Rho", "greek capital letter rho, U+03A1" }, +{ 931, "Sigma","greek capital letter sigma, U+03A3 ISOgrk3" }, +{ 932, "Tau", "greek capital letter tau, U+03A4" }, +{ 933, "Upsilon","greek capital letter upsilon, U+03A5 ISOgrk3" }, +{ 934, "Phi", "greek capital letter phi, U+03A6 ISOgrk3" }, +{ 935, "Chi", "greek capital letter chi, U+03A7" }, +{ 936, "Psi", "greek capital letter psi, U+03A8 ISOgrk3" }, +{ 937, "Omega","greek capital letter omega, U+03A9 ISOgrk3" }, + +{ 945, "alpha","greek small letter alpha, U+03B1 ISOgrk3" }, +{ 946, "beta", "greek small letter beta, U+03B2 ISOgrk3" }, +{ 947, "gamma","greek small letter gamma, U+03B3 ISOgrk3" }, +{ 948, "delta","greek small letter delta, U+03B4 ISOgrk3" }, +{ 949, "epsilon","greek small letter epsilon, U+03B5 ISOgrk3" }, +{ 950, "zeta", "greek small letter zeta, U+03B6 ISOgrk3" }, +{ 951, "eta", "greek small letter eta, U+03B7 ISOgrk3" }, +{ 952, "theta","greek small letter theta, U+03B8 ISOgrk3" }, +{ 953, "iota", "greek small letter iota, U+03B9 ISOgrk3" }, +{ 954, "kappa","greek small letter kappa, U+03BA ISOgrk3" }, +{ 955, "lambda","greek small letter lambda, U+03BB ISOgrk3" }, +{ 956, "mu", "greek small letter mu, U+03BC ISOgrk3" }, +{ 957, "nu", "greek small letter nu, U+03BD ISOgrk3" }, +{ 958, "xi", "greek small letter xi, U+03BE ISOgrk3" }, +{ 959, "omicron","greek small letter omicron, U+03BF NEW" }, +{ 960, "pi", "greek small letter pi, U+03C0 ISOgrk3" }, +{ 961, "rho", "greek small letter rho, U+03C1 ISOgrk3" }, +{ 962, "sigmaf","greek small letter final sigma, U+03C2 ISOgrk3" }, +{ 963, "sigma","greek small letter sigma, U+03C3 ISOgrk3" }, +{ 964, "tau", "greek small letter tau, U+03C4 ISOgrk3" }, +{ 965, "upsilon","greek small letter upsilon, U+03C5 ISOgrk3" }, +{ 966, "phi", "greek small letter phi, U+03C6 ISOgrk3" }, +{ 967, "chi", "greek small letter chi, U+03C7 ISOgrk3" }, +{ 968, "psi", "greek small letter psi, U+03C8 ISOgrk3" }, +{ 969, "omega","greek small letter omega, U+03C9 ISOgrk3" }, +{ 977, "thetasym","greek small letter theta symbol, U+03D1 NEW" }, +{ 978, "upsih","greek upsilon with hook symbol, U+03D2 NEW" }, +{ 982, "piv", "greek pi symbol, U+03D6 ISOgrk3" }, + +{ 8194, "ensp", "en space, U+2002 ISOpub" }, +{ 8195, "emsp", "em space, U+2003 ISOpub" }, +{ 8201, "thinsp","thin space, U+2009 ISOpub" }, +{ 8204, "zwnj", "zero width non-joiner, U+200C NEW RFC 2070" }, +{ 8205, "zwj", "zero width joiner, U+200D NEW RFC 2070" }, +{ 8206, "lrm", "left-to-right mark, U+200E NEW RFC 2070" }, +{ 8207, "rlm", "right-to-left mark, U+200F NEW RFC 2070" }, +{ 8211, "ndash","en dash, U+2013 ISOpub" }, +{ 8212, "mdash","em dash, U+2014 ISOpub" }, +{ 8216, "lsquo","left single quotation mark, U+2018 ISOnum" }, +{ 8217, "rsquo","right single quotation mark, U+2019 ISOnum" }, +{ 8218, "sbquo","single low-9 quotation mark, U+201A NEW" }, +{ 8220, "ldquo","left double quotation mark, U+201C ISOnum" }, +{ 8221, "rdquo","right double quotation mark, U+201D ISOnum" }, +{ 8222, "bdquo","double low-9 quotation mark, U+201E NEW" }, +{ 8224, "dagger","dagger, U+2020 ISOpub" }, +{ 8225, "Dagger","double dagger, U+2021 ISOpub" }, + +{ 8226, "bull", "bullet = black small circle, U+2022 ISOpub" }, +{ 8230, "hellip","horizontal ellipsis = three dot leader, U+2026 ISOpub" }, + +{ 8240, "permil","per mille sign, U+2030 ISOtech" }, + +{ 8242, "prime","prime = minutes = feet, U+2032 ISOtech" }, +{ 8243, "Prime","double prime = seconds = inches, U+2033 ISOtech" }, + +{ 8249, "lsaquo","single left-pointing angle quotation mark, U+2039 ISO proposed" }, +{ 8250, "rsaquo","single right-pointing angle quotation mark, U+203A ISO proposed" }, + +{ 8254, "oline","overline = spacing overscore, U+203E NEW" }, +{ 8260, "frasl","fraction slash, U+2044 NEW" }, + +{ 8364, "euro", "euro sign, U+20AC NEW" }, + +{ 8465, "image","blackletter capital I = imaginary part, U+2111 ISOamso" }, +{ 8472, "weierp","script capital P = power set = Weierstrass p, U+2118 ISOamso" }, +{ 8476, "real", "blackletter capital R = real part symbol, U+211C ISOamso" }, +{ 8482, "trade","trade mark sign, U+2122 ISOnum" }, +{ 8501, "alefsym","alef symbol = first transfinite cardinal, U+2135 NEW" }, +{ 8592, "larr", "leftwards arrow, U+2190 ISOnum" }, +{ 8593, "uarr", "upwards arrow, U+2191 ISOnum" }, +{ 8594, "rarr", "rightwards arrow, U+2192 ISOnum" }, +{ 8595, "darr", "downwards arrow, U+2193 ISOnum" }, +{ 8596, "harr", "left right arrow, U+2194 ISOamsa" }, +{ 8629, "crarr","downwards arrow with corner leftwards = carriage return, U+21B5 NEW" }, +{ 8656, "lArr", "leftwards double arrow, U+21D0 ISOtech" }, +{ 8657, "uArr", "upwards double arrow, U+21D1 ISOamsa" }, +{ 8658, "rArr", "rightwards double arrow, U+21D2 ISOtech" }, +{ 8659, "dArr", "downwards double arrow, U+21D3 ISOamsa" }, +{ 8660, "hArr", "left right double arrow, U+21D4 ISOamsa" }, + +{ 8704, "forall","for all, U+2200 ISOtech" }, +{ 8706, "part", "partial differential, U+2202 ISOtech" }, +{ 8707, "exist","there exists, U+2203 ISOtech" }, +{ 8709, "empty","empty set = null set = diameter, U+2205 ISOamso" }, +{ 8711, "nabla","nabla = backward difference, U+2207 ISOtech" }, +{ 8712, "isin", "element of, U+2208 ISOtech" }, +{ 8713, "notin","not an element of, U+2209 ISOtech" }, +{ 8715, "ni", "contains as member, U+220B ISOtech" }, +{ 8719, "prod", "n-ary product = product sign, U+220F ISOamsb" }, +{ 8721, "sum", "n-ary summation, U+2211 ISOamsb" }, +{ 8722, "minus","minus sign, U+2212 ISOtech" }, +{ 8727, "lowast","asterisk operator, U+2217 ISOtech" }, +{ 8730, "radic","square root = radical sign, U+221A ISOtech" }, +{ 8733, "prop", "proportional to, U+221D ISOtech" }, +{ 8734, "infin","infinity, U+221E ISOtech" }, +{ 8736, "ang", "angle, U+2220 ISOamso" }, +{ 8743, "and", "logical and = wedge, U+2227 ISOtech" }, +{ 8744, "or", "logical or = vee, U+2228 ISOtech" }, +{ 8745, "cap", "intersection = cap, U+2229 ISOtech" }, +{ 8746, "cup", "union = cup, U+222A ISOtech" }, +{ 8747, "int", "integral, U+222B ISOtech" }, +{ 8756, "there4","therefore, U+2234 ISOtech" }, +{ 8764, "sim", "tilde operator = varies with = similar to, U+223C ISOtech" }, +{ 8773, "cong", "approximately equal to, U+2245 ISOtech" }, +{ 8776, "asymp","almost equal to = asymptotic to, U+2248 ISOamsr" }, +{ 8800, "ne", "not equal to, U+2260 ISOtech" }, +{ 8801, "equiv","identical to, U+2261 ISOtech" }, +{ 8804, "le", "less-than or equal to, U+2264 ISOtech" }, +{ 8805, "ge", "greater-than or equal to, U+2265 ISOtech" }, +{ 8834, "sub", "subset of, U+2282 ISOtech" }, +{ 8835, "sup", "superset of, U+2283 ISOtech" }, +{ 8836, "nsub", "not a subset of, U+2284 ISOamsn" }, +{ 8838, "sube", "subset of or equal to, U+2286 ISOtech" }, +{ 8839, "supe", "superset of or equal to, U+2287 ISOtech" }, +{ 8853, "oplus","circled plus = direct sum, U+2295 ISOamsb" }, +{ 8855, "otimes","circled times = vector product, U+2297 ISOamsb" }, +{ 8869, "perp", "up tack = orthogonal to = perpendicular, U+22A5 ISOtech" }, +{ 8901, "sdot", "dot operator, U+22C5 ISOamsb" }, +{ 8968, "lceil","left ceiling = apl upstile, U+2308 ISOamsc" }, +{ 8969, "rceil","right ceiling, U+2309 ISOamsc" }, +{ 8970, "lfloor","left floor = apl downstile, U+230A ISOamsc" }, +{ 8971, "rfloor","right floor, U+230B ISOamsc" }, +{ 9001, "lang", "left-pointing angle bracket = bra, U+2329 ISOtech" }, +{ 9002, "rang", "right-pointing angle bracket = ket, U+232A ISOtech" }, +{ 9674, "loz", "lozenge, U+25CA ISOpub" }, + +{ 9824, "spades","black spade suit, U+2660 ISOpub" }, +{ 9827, "clubs","black club suit = shamrock, U+2663 ISOpub" }, +{ 9829, "hearts","black heart suit = valentine, U+2665 ISOpub" }, +{ 9830, "diams","black diamond suit, U+2666 ISOpub" }, + +}; + +/************************************************************************ + * * + * Commodity functions to handle entities * + * * + ************************************************************************/ + +/* + * Macro used to grow the current buffer. + */ +#define growBuffer(buffer) { \ + buffer##_size *= 2; \ + buffer = (xmlChar *) xmlRealloc(buffer, buffer##_size * sizeof(xmlChar)); \ + if (buffer == NULL) { \ + xmlGenericError(xmlGenericErrorContext, "realloc failed\n"); \ + return(NULL); \ + } \ +} + +/** + * htmlEntityLookup: + * @name: the entity name + * + * Lookup the given entity in EntitiesTable + * + * TODO: the linear scan is really ugly, an hash table is really needed. + * + * Returns the associated htmlEntityDescPtr if found, NULL otherwise. + */ +const htmlEntityDesc * +htmlEntityLookup(const xmlChar *name) { + unsigned int i; + + for (i = 0;i < (sizeof(html40EntitiesTable)/ + sizeof(html40EntitiesTable[0]));i++) { + if (xmlStrEqual(name, BAD_CAST html40EntitiesTable[i].name)) { +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"Found entity %s\n", name); +#endif + return((const htmlEntityDescPtr) &html40EntitiesTable[i]); + } + } + return(NULL); +} + +/** + * htmlEntityValueLookup: + * @value: the entity's unicode value + * + * Lookup the given entity in EntitiesTable + * + * TODO: the linear scan is really ugly, an hash table is really needed. + * + * Returns the associated htmlEntityDescPtr if found, NULL otherwise. + */ +const htmlEntityDesc * +htmlEntityValueLookup(unsigned int value) { + unsigned int i; +#ifdef DEBUG + unsigned int lv = 0; +#endif + + for (i = 0;i < (sizeof(html40EntitiesTable)/ + sizeof(html40EntitiesTable[0]));i++) { + if (html40EntitiesTable[i].value >= value) { + if (html40EntitiesTable[i].value > value) + break; +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"Found entity %s\n", html40EntitiesTable[i].name); +#endif + return((const htmlEntityDescPtr) &html40EntitiesTable[i]); + } +#ifdef DEBUG + if (lv > html40EntitiesTable[i].value) { + xmlGenericError(xmlGenericErrorContext, + "html40EntitiesTable[] is not sorted (%d > %d)!\n", + lv, html40EntitiesTable[i].value); + } + lv = html40EntitiesTable[i].value; +#endif + } + return(NULL); +} + +/** + * UTF8ToHtml: + * @out: a pointer to an array of bytes to store the result + * @outlen: the length of @out + * @in: a pointer to an array of UTF-8 chars + * @inlen: the length of @in + * + * Take a block of UTF-8 chars in and try to convert it to an ASCII + * plus HTML entities block of chars out. + * + * Returns 0 if success, -2 if the transcoding fails, or -1 otherwise + * The value of @inlen after return is the number of octets consumed + * as the return value is positive, else unpredictable. + * The value of @outlen after return is the number of octets consumed. + */ +int +UTF8ToHtml(unsigned char* out, int *outlen, + const unsigned char* in, int *inlen) { + const unsigned char* processed = in; + const unsigned char* outend; + const unsigned char* outstart = out; + const unsigned char* instart = in; + const unsigned char* inend; + unsigned int c, d; + int trailing; + + if (in == NULL) { + /* + * initialization nothing to do + */ + *outlen = 0; + *inlen = 0; + return(0); + } + inend = in + (*inlen); + outend = out + (*outlen); + while (in < inend) { + d = *in++; + if (d < 0x80) { c= d; trailing= 0; } + else if (d < 0xC0) { + /* trailing byte in leading position */ + *outlen = out - outstart; + *inlen = processed - instart; + return(-2); + } else if (d < 0xE0) { c= d & 0x1F; trailing= 1; } + else if (d < 0xF0) { c= d & 0x0F; trailing= 2; } + else if (d < 0xF8) { c= d & 0x07; trailing= 3; } + else { + /* no chance for this in Ascii */ + *outlen = out - outstart; + *inlen = processed - instart; + return(-2); + } + + if (inend - in < trailing) { + break; + } + + for ( ; trailing; trailing--) { + if ((in >= inend) || (((d= *in++) & 0xC0) != 0x80)) + break; + c <<= 6; + c |= d & 0x3F; + } + + /* assertion: c is a single UTF-4 value */ + if (c < 0x80) { + if (out + 1 >= outend) + break; + *out++ = c; + } else { + int len; + const htmlEntityDesc * ent; + + /* + * Try to lookup a predefined HTML entity for it + */ + + ent = htmlEntityValueLookup(c); + if (ent == NULL) { + /* no chance for this in Ascii */ + *outlen = out - outstart; + *inlen = processed - instart; + return(-2); + } + len = strlen(ent->name); + if (out + 2 + len >= outend) + break; + *out++ = '&'; + memcpy(out, ent->name, len); + out += len; + *out++ = ';'; + } + processed = in; + } + *outlen = out - outstart; + *inlen = processed - instart; + return(0); +} + +/** + * htmlEncodeEntities: + * @out: a pointer to an array of bytes to store the result + * @outlen: the length of @out + * @in: a pointer to an array of UTF-8 chars + * @inlen: the length of @in + * @quoteChar: the quote character to escape (' or ") or zero. + * + * Take a block of UTF-8 chars in and try to convert it to an ASCII + * plus HTML entities block of chars out. + * + * Returns 0 if success, -2 if the transcoding fails, or -1 otherwise + * The value of @inlen after return is the number of octets consumed + * as the return value is positive, else unpredictable. + * The value of @outlen after return is the number of octets consumed. + */ +int +htmlEncodeEntities(unsigned char* out, int *outlen, + const unsigned char* in, int *inlen, int quoteChar) { + const unsigned char* processed = in; + const unsigned char* outend = out + (*outlen); + const unsigned char* outstart = out; + const unsigned char* instart = in; + const unsigned char* inend = in + (*inlen); + unsigned int c, d; + int trailing; + + while (in < inend) { + d = *in++; + if (d < 0x80) { c= d; trailing= 0; } + else if (d < 0xC0) { + /* trailing byte in leading position */ + *outlen = out - outstart; + *inlen = processed - instart; + return(-2); + } else if (d < 0xE0) { c= d & 0x1F; trailing= 1; } + else if (d < 0xF0) { c= d & 0x0F; trailing= 2; } + else if (d < 0xF8) { c= d & 0x07; trailing= 3; } + else { + /* no chance for this in Ascii */ + *outlen = out - outstart; + *inlen = processed - instart; + return(-2); + } + + if (inend - in < trailing) + break; + + while (trailing--) { + if (((d= *in++) & 0xC0) != 0x80) { + *outlen = out - outstart; + *inlen = processed - instart; + return(-2); + } + c <<= 6; + c |= d & 0x3F; + } + + /* assertion: c is a single UTF-4 value */ + if ((c < 0x80) && (c != (unsigned int) quoteChar) && + (c != '&') && (c != '<') && (c != '>')) { + if (out >= outend) + break; + *out++ = c; + } else { + const htmlEntityDesc * ent; + const char *cp; + char nbuf[16]; + int len; + + /* + * Try to lookup a predefined HTML entity for it + */ + ent = htmlEntityValueLookup(c); + if (ent == NULL) { + snprintf(nbuf, sizeof(nbuf), "#%u", c); + cp = nbuf; + } + else + cp = ent->name; + len = strlen(cp); + if (out + 2 + len > outend) + break; + *out++ = '&'; + memcpy(out, cp, len); + out += len; + *out++ = ';'; + } + processed = in; + } + *outlen = out - outstart; + *inlen = processed - instart; + return(0); +} + +/** + * htmlDecodeEntities: + * @ctxt: the parser context + * @len: the len to decode (in bytes !), -1 for no size limit + * @end: an end marker xmlChar, 0 if none + * @end2: an end marker xmlChar, 0 if none + * @end3: an end marker xmlChar, 0 if none + * + * Substitute the HTML entities by their value + * + * DEPRECATED !!!! + * + * Returns A newly allocated string with the substitution done. The caller + * must deallocate it ! + */ +xmlChar * +htmlDecodeEntities(htmlParserCtxtPtr ctxt ATTRIBUTE_UNUSED, int len ATTRIBUTE_UNUSED, + xmlChar end ATTRIBUTE_UNUSED, xmlChar end2 ATTRIBUTE_UNUSED, xmlChar end3 ATTRIBUTE_UNUSED) { + static int deprecated = 0; + if (!deprecated) { + xmlGenericError(xmlGenericErrorContext, + "htmlDecodeEntities() deprecated function reached\n"); + deprecated = 1; + } + return(NULL); +} + +/************************************************************************ + * * + * Commodity functions to handle streams * + * * + ************************************************************************/ + +/** + * htmlNewInputStream: + * @ctxt: an HTML parser context + * + * Create a new input stream structure + * Returns the new input stream or NULL + */ +static htmlParserInputPtr +htmlNewInputStream(htmlParserCtxtPtr ctxt) { + htmlParserInputPtr input; + + input = (xmlParserInputPtr) xmlMalloc(sizeof(htmlParserInput)); + if (input == NULL) { + ctxt->errNo = XML_ERR_NO_MEMORY; + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, + "malloc: couldn't allocate a new input stream\n"); + return(NULL); + } + memset(input, 0, sizeof(htmlParserInput)); + input->filename = NULL; + input->directory = NULL; + input->base = NULL; + input->cur = NULL; + input->buf = NULL; + input->line = 1; + input->col = 1; + input->buf = NULL; + input->free = NULL; + input->version = NULL; + input->consumed = 0; + input->length = 0; + return(input); +} + + +/************************************************************************ + * * + * Commodity functions, cleanup needed ? * + * * + ************************************************************************/ +/* + * all tags allowing pc data from the html 4.01 loose dtd + * NOTE: it might be more apropriate to integrate this information + * into the html40ElementTable array but I don't want to risk any + * binary incomptibility + */ +static const char *allowPCData[] = { + "a", "abbr", "acronym", "address", "applet", "b", "bdo", "big", + "blockquote", "body", "button", "caption", "center", "cite", "code", + "dd", "del", "dfn", "div", "dt", "em", "font", "form", "h1", "h2", + "h3", "h4", "h5", "h6", "i", "iframe", "ins", "kbd", "label", "legend", + "li", "noframes", "noscript", "object", "p", "pre", "q", "s", "samp", + "small", "span", "strike", "strong", "td", "th", "tt", "u", "var" +}; + +/** + * areBlanks: + * @ctxt: an HTML parser context + * @str: a xmlChar * + * @len: the size of @str + * + * Is this a sequence of blank chars that one can ignore ? + * + * Returns 1 if ignorable 0 otherwise. + */ + +static int areBlanks(htmlParserCtxtPtr ctxt, const xmlChar *str, int len) { + unsigned int i; + int j; + xmlNodePtr lastChild; + + for (j = 0;j < len;j++) + if (!(IS_BLANK(str[j]))) return(0); + + if (CUR == 0) return(1); + if (CUR != '<') return(0); + if (ctxt->name == NULL) + return(1); + if (xmlStrEqual(ctxt->name, BAD_CAST"html")) + return(1); + if (xmlStrEqual(ctxt->name, BAD_CAST"head")) + return(1); + if (xmlStrEqual(ctxt->name, BAD_CAST"body")) + return(1); + if (ctxt->node == NULL) return(0); + lastChild = xmlGetLastChild(ctxt->node); + if (lastChild == NULL) { + if ((ctxt->node->type != XML_ELEMENT_NODE) && + (ctxt->node->content != NULL)) return(0); + /* keep ws in constructs like ... ... + for all tags "b" allowing PCDATA */ + for ( i = 0; i < sizeof(allowPCData)/sizeof(allowPCData[0]); i++ ) { + if ( xmlStrEqual(ctxt->name, BAD_CAST allowPCData[i]) ) { + return(0); + } + } + } else if (xmlNodeIsText(lastChild)) { + return(0); + } else { + /* keep ws in constructs like

xy z

+ for all tags "p" allowing PCDATA */ + for ( i = 0; i < sizeof(allowPCData)/sizeof(allowPCData[0]); i++ ) { + if ( xmlStrEqual(lastChild->name, BAD_CAST allowPCData[i]) ) { + return(0); + } + } + } + return(1); +} + +/** + * htmlNewDocNoDtD: + * @URI: URI for the dtd, or NULL + * @ExternalID: the external ID of the DTD, or NULL + * + * Creates a new HTML document without a DTD node if @URI and @ExternalID + * are NULL + * + * Returns a new document, do not initialize the DTD if not provided + */ +htmlDocPtr +htmlNewDocNoDtD(const xmlChar *URI, const xmlChar *ExternalID) { + xmlDocPtr cur; + + /* + * Allocate a new document and fill the fields. + */ + cur = (xmlDocPtr) xmlMalloc(sizeof(xmlDoc)); + if (cur == NULL) { + xmlGenericError(xmlGenericErrorContext, + "htmlNewDocNoDtD : malloc failed\n"); + return(NULL); + } + memset(cur, 0, sizeof(xmlDoc)); + + cur->type = XML_HTML_DOCUMENT_NODE; + cur->version = NULL; + cur->intSubset = NULL; + cur->doc = cur; + cur->name = NULL; + cur->children = NULL; + cur->extSubset = NULL; + cur->oldNs = NULL; + cur->encoding = NULL; + cur->standalone = 1; + cur->compression = 0; + cur->ids = NULL; + cur->refs = NULL; + cur->_private = NULL; + if ((ExternalID != NULL) || + (URI != NULL)) + xmlCreateIntSubset(cur, BAD_CAST "HTML", ExternalID, URI); + return(cur); +} + +/** + * htmlNewDoc: + * @URI: URI for the dtd, or NULL + * @ExternalID: the external ID of the DTD, or NULL + * + * Creates a new HTML document + * + * Returns a new document + */ +htmlDocPtr +htmlNewDoc(const xmlChar *URI, const xmlChar *ExternalID) { + if ((URI == NULL) && (ExternalID == NULL)) + return(htmlNewDocNoDtD( + BAD_CAST "http://www.w3.org/TR/REC-html40/loose.dtd", + BAD_CAST "-//W3C//DTD HTML 4.0 Transitional//EN")); + + return(htmlNewDocNoDtD(URI, ExternalID)); +} + + +/************************************************************************ + * * + * The parser itself * + * Relates to http://www.w3.org/TR/html40 * + * * + ************************************************************************/ + +/************************************************************************ + * * + * The parser itself * + * * + ************************************************************************/ + +/** + * htmlParseHTMLName: + * @ctxt: an HTML parser context + * + * parse an HTML tag or attribute name, note that we convert it to lowercase + * since HTML names are not case-sensitive. + * + * Returns the Tag Name parsed or NULL + */ + +static xmlChar * +htmlParseHTMLName(htmlParserCtxtPtr ctxt) { + xmlChar *ret = NULL; + int i = 0; + xmlChar loc[HTML_PARSER_BUFFER_SIZE]; + + if (!IS_LETTER(CUR) && (CUR != '_') && + (CUR != ':')) return(NULL); + + while ((i < HTML_PARSER_BUFFER_SIZE) && + ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) || + (CUR == ':') || (CUR == '-') || (CUR == '_'))) { + if ((CUR >= 'A') && (CUR <= 'Z')) loc[i] = CUR + 0x20; + else loc[i] = CUR; + i++; + + NEXT; + } + + ret = xmlStrndup(loc, i); + + return(ret); +} + +/** + * htmlParseName: + * @ctxt: an HTML parser context + * + * parse an HTML name, this routine is case sensitive. + * + * Returns the Name parsed or NULL + */ + +static xmlChar * +htmlParseName(htmlParserCtxtPtr ctxt) { + xmlChar buf[HTML_MAX_NAMELEN]; + int len = 0; + + GROW; + if (!IS_LETTER(CUR) && (CUR != '_')) { + return(NULL); + } + + while ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) || + (CUR == '.') || (CUR == '-') || + (CUR == '_') || (CUR == ':') || + (IS_COMBINING(CUR)) || + (IS_EXTENDER(CUR))) { + buf[len++] = CUR; + NEXT; + if (len >= HTML_MAX_NAMELEN) { + xmlGenericError(xmlGenericErrorContext, + "htmlParseName: reached HTML_MAX_NAMELEN limit\n"); + while ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) || + (CUR == '.') || (CUR == '-') || + (CUR == '_') || (CUR == ':') || + (IS_COMBINING(CUR)) || + (IS_EXTENDER(CUR))) + NEXT; + break; + } + } + return(xmlStrndup(buf, len)); +} + +/** + * htmlParseHTMLAttribute: + * @ctxt: an HTML parser context + * @stop: a char stop value + * + * parse an HTML attribute value till the stop (quote), if + * stop is 0 then it stops at the first space + * + * Returns the attribute parsed or NULL + */ + +static xmlChar * +htmlParseHTMLAttribute(htmlParserCtxtPtr ctxt, const xmlChar stop) { + xmlChar *buffer = NULL; + int buffer_size = 0; + xmlChar *out = NULL; + xmlChar *name = NULL; + + xmlChar *cur = NULL; + const htmlEntityDesc * ent; + + /* + * allocate a translation buffer. + */ + buffer_size = HTML_PARSER_BUFFER_SIZE; + buffer = (xmlChar *) xmlMalloc(buffer_size * sizeof(xmlChar)); + if (buffer == NULL) { + xmlGenericError(xmlGenericErrorContext, + "htmlParseHTMLAttribute: malloc failed\n"); + return(NULL); + } + out = buffer; + + /* + * Ok loop until we reach one of the ending chars + */ + while ((CUR != 0) && (CUR != stop)) { + if ((stop == 0) && (CUR == '>')) break; + if ((stop == 0) && (IS_BLANK(CUR))) break; + if (CUR == '&') { + if (NXT(1) == '#') { + unsigned int c; + int bits; + + c = htmlParseCharRef(ctxt); + if (c < 0x80) + { *out++ = c; bits= -6; } + else if (c < 0x800) + { *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; } + else if (c < 0x10000) + { *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; } + else + { *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; } + + for ( ; bits >= 0; bits-= 6) { + *out++ = ((c >> bits) & 0x3F) | 0x80; + } + + if (out - buffer > buffer_size - 100) { + int indx = out - buffer; + + growBuffer(buffer); + out = &buffer[indx]; + } + } else { + ent = htmlParseEntityRef(ctxt, &name); + if (name == NULL) { + *out++ = '&'; + if (out - buffer > buffer_size - 100) { + int indx = out - buffer; + + growBuffer(buffer); + out = &buffer[indx]; + } + } else if (ent == NULL) { + *out++ = '&'; + cur = name; + while (*cur != 0) { + if (out - buffer > buffer_size - 100) { + int indx = out - buffer; + + growBuffer(buffer); + out = &buffer[indx]; + } + *out++ = *cur++; + } + xmlFree(name); + } else { + unsigned int c; + int bits; + + if (out - buffer > buffer_size - 100) { + int indx = out - buffer; + + growBuffer(buffer); + out = &buffer[indx]; + } + c = (xmlChar)ent->value; + if (c < 0x80) + { *out++ = c; bits= -6; } + else if (c < 0x800) + { *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; } + else if (c < 0x10000) + { *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; } + else + { *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; } + + for ( ; bits >= 0; bits-= 6) { + *out++ = ((c >> bits) & 0x3F) | 0x80; + } + xmlFree(name); + } + } + } else { + unsigned int c; + int bits, l; + + if (out - buffer > buffer_size - 100) { + int indx = out - buffer; + + growBuffer(buffer); + out = &buffer[indx]; + } + c = CUR_CHAR(l); + if (c < 0x80) + { *out++ = c; bits= -6; } + else if (c < 0x800) + { *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; } + else if (c < 0x10000) + { *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; } + else + { *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; } + + for ( ; bits >= 0; bits-= 6) { + *out++ = ((c >> bits) & 0x3F) | 0x80; + } + NEXT; + } + } + *out++ = 0; + return(buffer); +} + +/** + * htmlParseEntityRef: + * @ctxt: an HTML parser context + * @str: location to store the entity name + * + * parse an HTML ENTITY references + * + * [68] EntityRef ::= '&' Name ';' + * + * Returns the associated htmlEntityDescPtr if found, or NULL otherwise, + * if non-NULL *str will have to be freed by the caller. + */ +const htmlEntityDesc * +htmlParseEntityRef(htmlParserCtxtPtr ctxt, xmlChar **str) { + xmlChar *name; + const htmlEntityDesc * ent = NULL; + *str = NULL; + + if (CUR == '&') { + NEXT; + name = htmlParseName(ctxt); + if (name == NULL) { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, "htmlParseEntityRef: no name\n"); + ctxt->wellFormed = 0; + } else { + GROW; + if (CUR == ';') { + *str = name; + + /* + * Lookup the entity in the table. + */ + ent = htmlEntityLookup(name); + if (ent != NULL) /* OK that's ugly !!! */ + NEXT; + } else { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, + "htmlParseEntityRef: expecting ';'\n"); + *str = name; + } + } + } + return(ent); +} + +/** + * htmlParseAttValue: + * @ctxt: an HTML parser context + * + * parse a value for an attribute + * Note: the parser won't do substitution of entities here, this + * will be handled later in xmlStringGetNodeList, unless it was + * asked for ctxt->replaceEntities != 0 + * + * Returns the AttValue parsed or NULL. + */ + +static xmlChar * +htmlParseAttValue(htmlParserCtxtPtr ctxt) { + xmlChar *ret = NULL; + + if (CUR == '"') { + NEXT; + ret = htmlParseHTMLAttribute(ctxt, '"'); + if (CUR != '"') { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, "AttValue: ' expected\n"); + ctxt->wellFormed = 0; + } else + NEXT; + } else if (CUR == '\'') { + NEXT; + ret = htmlParseHTMLAttribute(ctxt, '\''); + if (CUR != '\'') { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, "AttValue: ' expected\n"); + ctxt->wellFormed = 0; + } else + NEXT; + } else { + /* + * That's an HTMLism, the attribute value may not be quoted + */ + ret = htmlParseHTMLAttribute(ctxt, 0); + if (ret == NULL) { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, "AttValue: no value found\n"); + ctxt->wellFormed = 0; + } + } + return(ret); +} + +/** + * htmlParseSystemLiteral: + * @ctxt: an HTML parser context + * + * parse an HTML Literal + * + * [11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'") + * + * Returns the SystemLiteral parsed or NULL + */ + +static xmlChar * +htmlParseSystemLiteral(htmlParserCtxtPtr ctxt) { + const xmlChar *q; + xmlChar *ret = NULL; + + if (CUR == '"') { + NEXT; + q = CUR_PTR; + while ((IS_CHAR(CUR)) && (CUR != '"')) + NEXT; + if (!IS_CHAR(CUR)) { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, "Unfinished SystemLiteral\n"); + ctxt->wellFormed = 0; + } else { + ret = xmlStrndup(q, CUR_PTR - q); + NEXT; + } + } else if (CUR == '\'') { + NEXT; + q = CUR_PTR; + while ((IS_CHAR(CUR)) && (CUR != '\'')) + NEXT; + if (!IS_CHAR(CUR)) { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, "Unfinished SystemLiteral\n"); + ctxt->wellFormed = 0; + } else { + ret = xmlStrndup(q, CUR_PTR - q); + NEXT; + } + } else { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, + "SystemLiteral \" or ' expected\n"); + ctxt->wellFormed = 0; + } + + return(ret); +} + +/** + * htmlParsePubidLiteral: + * @ctxt: an HTML parser context + * + * parse an HTML public literal + * + * [12] PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'" + * + * Returns the PubidLiteral parsed or NULL. + */ + +static xmlChar * +htmlParsePubidLiteral(htmlParserCtxtPtr ctxt) { + const xmlChar *q; + xmlChar *ret = NULL; + /* + * Name ::= (Letter | '_') (NameChar)* + */ + if (CUR == '"') { + NEXT; + q = CUR_PTR; + while (IS_PUBIDCHAR(CUR)) NEXT; + if (CUR != '"') { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, "Unfinished PubidLiteral\n"); + ctxt->wellFormed = 0; + } else { + ret = xmlStrndup(q, CUR_PTR - q); + NEXT; + } + } else if (CUR == '\'') { + NEXT; + q = CUR_PTR; + while ((IS_LETTER(CUR)) && (CUR != '\'')) + NEXT; + if (!IS_LETTER(CUR)) { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, "Unfinished PubidLiteral\n"); + ctxt->wellFormed = 0; + } else { + ret = xmlStrndup(q, CUR_PTR - q); + NEXT; + } + } else { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, "SystemLiteral \" or ' expected\n"); + ctxt->wellFormed = 0; + } + + return(ret); +} + +/** + * htmlParseScript: + * @ctxt: an HTML parser context + * + * parse the content of an HTML SCRIPT or STYLE element + * http://www.w3.org/TR/html4/sgml/dtd.html#Script + * http://www.w3.org/TR/html4/sgml/dtd.html#StyleSheet + * http://www.w3.org/TR/html4/types.html#type-script + * http://www.w3.org/TR/html4/types.html#h-6.15 + * http://www.w3.org/TR/html4/appendix/notes.html#h-B.3.2.1 + * + * Script data ( %Script; in the DTD) can be the content of the SCRIPT + * element and the value of intrinsic event attributes. User agents must + * not evaluate script data as HTML markup but instead must pass it on as + * data to a script engine. + * NOTES: + * - The content is passed like CDATA + * - the attributes for style and scripting "onXXX" are also described + * as CDATA but SGML allows entities references in attributes so their + * processing is identical as other attributes + */ +static void +htmlParseScript(htmlParserCtxtPtr ctxt) { + xmlChar buf[HTML_PARSER_BIG_BUFFER_SIZE + 1]; + int nbchar = 0; + xmlChar cur; + + SHRINK; + cur = CUR; + while (IS_CHAR(cur)) { + if ((cur == '<') && (NXT(1) == '!') && (NXT(2) == '-') && + (NXT(3) == '-')) { + if ((nbchar != 0) && (ctxt->sax != NULL) && (!ctxt->disableSAX)) { + if (ctxt->sax->cdataBlock!= NULL) { + /* + * Insert as CDATA, which is the same as HTML_PRESERVE_NODE + */ + ctxt->sax->cdataBlock(ctxt->userData, buf, nbchar); + } + } + nbchar = 0; + htmlParseComment(ctxt); + cur = CUR; + continue; + } else if ((cur == '<') && (NXT(1) == '/')) { + /* + * One should break here, the specification is clear: + * Authors should therefore escape "= 'A') && (NXT(2) <= 'Z')) || + ((NXT(2) >= 'a') && (NXT(2) <= 'z'))) + break; /* while */ + } + buf[nbchar++] = cur; + if (nbchar >= HTML_PARSER_BIG_BUFFER_SIZE) { + if (ctxt->sax->cdataBlock!= NULL) { + /* + * Insert as CDATA, which is the same as HTML_PRESERVE_NODE + */ + ctxt->sax->cdataBlock(ctxt->userData, buf, nbchar); + } + nbchar = 0; + } + NEXT; + cur = CUR; + } + if (!(IS_CHAR(cur))) { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, + "Invalid char in CDATA 0x%X\n", cur); + ctxt->wellFormed = 0; + NEXT; + } + + if ((nbchar != 0) && (ctxt->sax != NULL) && (!ctxt->disableSAX)) { + if (ctxt->sax->cdataBlock!= NULL) { + /* + * Insert as CDATA, which is the same as HTML_PRESERVE_NODE + */ + ctxt->sax->cdataBlock(ctxt->userData, buf, nbchar); + } + } +} + + +/** + * htmlParseCharData: + * @ctxt: an HTML parser context + * + * parse a CharData section. + * if we are within a CDATA section ']]>' marks an end of section. + * + * [14] CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*) + */ + +static void +htmlParseCharData(htmlParserCtxtPtr ctxt) { + xmlChar buf[HTML_PARSER_BIG_BUFFER_SIZE + 5]; + int nbchar = 0; + int cur, l; + + SHRINK; + cur = CUR_CHAR(l); + while (((cur != '<') || (ctxt->token == '<')) && + ((cur != '&') || (ctxt->token == '&')) && + (IS_CHAR(cur))) { + COPY_BUF(l,buf,nbchar,cur); + if (nbchar >= HTML_PARSER_BIG_BUFFER_SIZE) { + /* + * Ok the segment is to be consumed as chars. + */ + if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) { + if (areBlanks(ctxt, buf, nbchar)) { + if (ctxt->sax->ignorableWhitespace != NULL) + ctxt->sax->ignorableWhitespace(ctxt->userData, + buf, nbchar); + } else { + htmlCheckParagraph(ctxt); + if (ctxt->sax->characters != NULL) + ctxt->sax->characters(ctxt->userData, buf, nbchar); + } + } + nbchar = 0; + } + NEXTL(l); + cur = CUR_CHAR(l); + } + if (nbchar != 0) { + /* + * Ok the segment is to be consumed as chars. + */ + if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) { + if (areBlanks(ctxt, buf, nbchar)) { + if (ctxt->sax->ignorableWhitespace != NULL) + ctxt->sax->ignorableWhitespace(ctxt->userData, buf, nbchar); + } else { + htmlCheckParagraph(ctxt); + if (ctxt->sax->characters != NULL) + ctxt->sax->characters(ctxt->userData, buf, nbchar); + } + } + } else { + /* + * Loop detection + */ + if (cur == 0) + ctxt->instate = XML_PARSER_EOF; + } +} + +/** + * htmlParseExternalID: + * @ctxt: an HTML parser context + * @publicID: a xmlChar** receiving PubidLiteral + * + * Parse an External ID or a Public ID + * + * [75] ExternalID ::= 'SYSTEM' S SystemLiteral + * | 'PUBLIC' S PubidLiteral S SystemLiteral + * + * [83] PublicID ::= 'PUBLIC' S PubidLiteral + * + * Returns the function returns SystemLiteral and in the second + * case publicID receives PubidLiteral, is strict is off + * it is possible to return NULL and have publicID set. + */ + +static xmlChar * +htmlParseExternalID(htmlParserCtxtPtr ctxt, xmlChar **publicID) { + xmlChar *URI = NULL; + + if ((UPPER == 'S') && (UPP(1) == 'Y') && + (UPP(2) == 'S') && (UPP(3) == 'T') && + (UPP(4) == 'E') && (UPP(5) == 'M')) { + SKIP(6); + if (!IS_BLANK(CUR)) { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, + "Space required after 'SYSTEM'\n"); + ctxt->wellFormed = 0; + } + SKIP_BLANKS; + URI = htmlParseSystemLiteral(ctxt); + if (URI == NULL) { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, + "htmlParseExternalID: SYSTEM, no URI\n"); + ctxt->wellFormed = 0; + } + } else if ((UPPER == 'P') && (UPP(1) == 'U') && + (UPP(2) == 'B') && (UPP(3) == 'L') && + (UPP(4) == 'I') && (UPP(5) == 'C')) { + SKIP(6); + if (!IS_BLANK(CUR)) { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, + "Space required after 'PUBLIC'\n"); + ctxt->wellFormed = 0; + } + SKIP_BLANKS; + *publicID = htmlParsePubidLiteral(ctxt); + if (*publicID == NULL) { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, + "htmlParseExternalID: PUBLIC, no Public Identifier\n"); + ctxt->wellFormed = 0; + } + SKIP_BLANKS; + if ((CUR == '"') || (CUR == '\'')) { + URI = htmlParseSystemLiteral(ctxt); + } + } + return(URI); +} + +/** + * htmlParseComment: + * @ctxt: an HTML parser context + * + * Parse an XML (SGML) comment + * + * [15] Comment ::= '' + */ +static void +htmlParseComment(htmlParserCtxtPtr ctxt) { + xmlChar *buf = NULL; + int len; + int size = HTML_PARSER_BUFFER_SIZE; + int q, ql; + int r, rl; + int cur, l; + xmlParserInputState state; + + /* + * Check that there is a comment right here. + */ + if ((RAW != '<') || (NXT(1) != '!') || + (NXT(2) != '-') || (NXT(3) != '-')) return; + + state = ctxt->instate; + ctxt->instate = XML_PARSER_COMMENT; + SHRINK; + SKIP(4); + buf = (xmlChar *) xmlMalloc(size * sizeof(xmlChar)); + if (buf == NULL) { + xmlGenericError(xmlGenericErrorContext, + "malloc of %d byte failed\n", size); + ctxt->instate = state; + return; + } + q = CUR_CHAR(ql); + NEXTL(ql); + r = CUR_CHAR(rl); + NEXTL(rl); + cur = CUR_CHAR(l); + len = 0; + while (IS_CHAR(cur) && + ((cur != '>') || + (r != '-') || (q != '-'))) { + if (len + 5 >= size) { + size *= 2; + buf = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar)); + if (buf == NULL) { + xmlGenericError(xmlGenericErrorContext, + "realloc of %d byte failed\n", size); + ctxt->instate = state; + return; + } + } + COPY_BUF(ql,buf,len,q); + q = r; + ql = rl; + r = cur; + rl = l; + NEXTL(l); + cur = CUR_CHAR(l); + if (cur == 0) { + SHRINK; + GROW; + cur = CUR_CHAR(l); + } + } + buf[len] = 0; + if (!IS_CHAR(cur)) { + ctxt->errNo = XML_ERR_COMMENT_NOT_FINISHED; + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, + "Comment not terminated \n */ + } + if (incomment) { + if (base + 3 < len) + return(-1); + if ((buf[base] == '-') && (buf[base + 1] == '-') && + (buf[base + 2] == '>')) { + incomment = 0; + base += 2; + } + continue; + } + if (buf[base] == first) { + if (third != 0) { + if ((buf[base + 1] != next) || + (buf[base + 2] != third)) continue; + } else if (next != 0) { + if (buf[base + 1] != next) continue; + } + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + if (next == 0) + xmlGenericError(xmlGenericErrorContext, + "HPP: lookup '%c' found at %d\n", + first, base); + else if (third == 0) + xmlGenericError(xmlGenericErrorContext, + "HPP: lookup '%c%c' found at %d\n", + first, next, base); + else + xmlGenericError(xmlGenericErrorContext, + "HPP: lookup '%c%c%c' found at %d\n", + first, next, third, base); +#endif + return(base - (in->cur - in->base)); + } + } + ctxt->checkIndex = base; +#ifdef DEBUG_PUSH + if (next == 0) + xmlGenericError(xmlGenericErrorContext, + "HPP: lookup '%c' failed\n", first); + else if (third == 0) + xmlGenericError(xmlGenericErrorContext, + "HPP: lookup '%c%c' failed\n", first, next); + else + xmlGenericError(xmlGenericErrorContext, + "HPP: lookup '%c%c%c' failed\n", first, next, third); +#endif + return(-1); +} + +/** + * htmlParseTryOrFinish: + * @ctxt: an HTML parser context + * @terminate: last chunk indicator + * + * Try to progress on parsing + * + * Returns zero if no parsing was possible + */ +static int +htmlParseTryOrFinish(htmlParserCtxtPtr ctxt, int terminate) { + int ret = 0; + htmlParserInputPtr in; + int avail = 0; + xmlChar cur, next; + +#ifdef DEBUG_PUSH + switch (ctxt->instate) { + case XML_PARSER_EOF: + xmlGenericError(xmlGenericErrorContext, + "HPP: try EOF\n"); break; + case XML_PARSER_START: + xmlGenericError(xmlGenericErrorContext, + "HPP: try START\n"); break; + case XML_PARSER_MISC: + xmlGenericError(xmlGenericErrorContext, + "HPP: try MISC\n");break; + case XML_PARSER_COMMENT: + xmlGenericError(xmlGenericErrorContext, + "HPP: try COMMENT\n");break; + case XML_PARSER_PROLOG: + xmlGenericError(xmlGenericErrorContext, + "HPP: try PROLOG\n");break; + case XML_PARSER_START_TAG: + xmlGenericError(xmlGenericErrorContext, + "HPP: try START_TAG\n");break; + case XML_PARSER_CONTENT: + xmlGenericError(xmlGenericErrorContext, + "HPP: try CONTENT\n");break; + case XML_PARSER_CDATA_SECTION: + xmlGenericError(xmlGenericErrorContext, + "HPP: try CDATA_SECTION\n");break; + case XML_PARSER_END_TAG: + xmlGenericError(xmlGenericErrorContext, + "HPP: try END_TAG\n");break; + case XML_PARSER_ENTITY_DECL: + xmlGenericError(xmlGenericErrorContext, + "HPP: try ENTITY_DECL\n");break; + case XML_PARSER_ENTITY_VALUE: + xmlGenericError(xmlGenericErrorContext, + "HPP: try ENTITY_VALUE\n");break; + case XML_PARSER_ATTRIBUTE_VALUE: + xmlGenericError(xmlGenericErrorContext, + "HPP: try ATTRIBUTE_VALUE\n");break; + case XML_PARSER_DTD: + xmlGenericError(xmlGenericErrorContext, + "HPP: try DTD\n");break; + case XML_PARSER_EPILOG: + xmlGenericError(xmlGenericErrorContext, + "HPP: try EPILOG\n");break; + case XML_PARSER_PI: + xmlGenericError(xmlGenericErrorContext, + "HPP: try PI\n");break; + case XML_PARSER_SYSTEM_LITERAL: + xmlGenericError(xmlGenericErrorContext, + "HPP: try SYSTEM_LITERAL\n");break; + } +#endif + + while (1) { + + in = ctxt->input; + if (in == NULL) break; + if (in->buf == NULL) + avail = in->length - (in->cur - in->base); + else + avail = in->buf->buffer->use - (in->cur - in->base); + if ((avail == 0) && (terminate)) { + htmlAutoCloseOnEnd(ctxt); + if ((ctxt->nameNr == 0) && (ctxt->instate != XML_PARSER_EOF)) { + /* + * SAX: end of the document processing. + */ + ctxt->instate = XML_PARSER_EOF; + if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) + ctxt->sax->endDocument(ctxt->userData); + } + } + if (avail < 1) + goto done; + switch (ctxt->instate) { + case XML_PARSER_EOF: + /* + * Document parsing is done ! + */ + goto done; + case XML_PARSER_START: + /* + * Very first chars read from the document flow. + */ + cur = in->cur[0]; + if (IS_BLANK(cur)) { + SKIP_BLANKS; + if (in->buf == NULL) + avail = in->length - (in->cur - in->base); + else + avail = in->buf->buffer->use - (in->cur - in->base); + } + if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) + ctxt->sax->setDocumentLocator(ctxt->userData, + &xmlDefaultSAXLocator); + if ((ctxt->sax) && (ctxt->sax->startDocument) && + (!ctxt->disableSAX)) + ctxt->sax->startDocument(ctxt->userData); + + cur = in->cur[0]; + next = in->cur[1]; + if ((cur == '<') && (next == '!') && + (UPP(2) == 'D') && (UPP(3) == 'O') && + (UPP(4) == 'C') && (UPP(5) == 'T') && + (UPP(6) == 'Y') && (UPP(7) == 'P') && + (UPP(8) == 'E')) { + if ((!terminate) && + (htmlParseLookupSequence(ctxt, '>', 0, 0) < 0)) + goto done; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: Parsing internal subset\n"); +#endif + htmlParseDocTypeDecl(ctxt); + ctxt->instate = XML_PARSER_PROLOG; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering PROLOG\n"); +#endif + } else { + ctxt->instate = XML_PARSER_MISC; + } +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering MISC\n"); +#endif + break; + case XML_PARSER_MISC: + SKIP_BLANKS; + if (in->buf == NULL) + avail = in->length - (in->cur - in->base); + else + avail = in->buf->buffer->use - (in->cur - in->base); + if (avail < 2) + goto done; + cur = in->cur[0]; + next = in->cur[1]; + if ((cur == '<') && (next == '!') && + (in->cur[2] == '-') && (in->cur[3] == '-')) { + if ((!terminate) && + (htmlParseLookupSequence(ctxt, '-', '-', '>') < 0)) + goto done; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: Parsing Comment\n"); +#endif + htmlParseComment(ctxt); + ctxt->instate = XML_PARSER_MISC; + } else if ((cur == '<') && (next == '!') && + (UPP(2) == 'D') && (UPP(3) == 'O') && + (UPP(4) == 'C') && (UPP(5) == 'T') && + (UPP(6) == 'Y') && (UPP(7) == 'P') && + (UPP(8) == 'E')) { + if ((!terminate) && + (htmlParseLookupSequence(ctxt, '>', 0, 0) < 0)) + goto done; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: Parsing internal subset\n"); +#endif + htmlParseDocTypeDecl(ctxt); + ctxt->instate = XML_PARSER_PROLOG; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering PROLOG\n"); +#endif + } else if ((cur == '<') && (next == '!') && + (avail < 9)) { + goto done; + } else { + ctxt->instate = XML_PARSER_START_TAG; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering START_TAG\n"); +#endif + } + break; + case XML_PARSER_PROLOG: + SKIP_BLANKS; + if (in->buf == NULL) + avail = in->length - (in->cur - in->base); + else + avail = in->buf->buffer->use - (in->cur - in->base); + if (avail < 2) + goto done; + cur = in->cur[0]; + next = in->cur[1]; + if ((cur == '<') && (next == '!') && + (in->cur[2] == '-') && (in->cur[3] == '-')) { + if ((!terminate) && + (htmlParseLookupSequence(ctxt, '-', '-', '>') < 0)) + goto done; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: Parsing Comment\n"); +#endif + htmlParseComment(ctxt); + ctxt->instate = XML_PARSER_PROLOG; + } else if ((cur == '<') && (next == '!') && + (avail < 4)) { + goto done; + } else { + ctxt->instate = XML_PARSER_START_TAG; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering START_TAG\n"); +#endif + } + break; + case XML_PARSER_EPILOG: + if (in->buf == NULL) + avail = in->length - (in->cur - in->base); + else + avail = in->buf->buffer->use - (in->cur - in->base); + if (avail < 1) + goto done; + cur = in->cur[0]; + if (IS_BLANK(cur)) { + htmlParseCharData(ctxt); + goto done; + } + if (avail < 2) + goto done; + next = in->cur[1]; + if ((cur == '<') && (next == '!') && + (in->cur[2] == '-') && (in->cur[3] == '-')) { + if ((!terminate) && + (htmlParseLookupSequence(ctxt, '-', '-', '>') < 0)) + goto done; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: Parsing Comment\n"); +#endif + htmlParseComment(ctxt); + ctxt->instate = XML_PARSER_EPILOG; + } else if ((cur == '<') && (next == '!') && + (avail < 4)) { + goto done; + } else { + ctxt->errNo = XML_ERR_DOCUMENT_END; + ctxt->wellFormed = 0; + ctxt->instate = XML_PARSER_EOF; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering EOF\n"); +#endif + if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) + ctxt->sax->endDocument(ctxt->userData); + goto done; + } + break; + case XML_PARSER_START_TAG: { + xmlChar *name, *oldname; + int depth = ctxt->nameNr; + const htmlElemDesc * info; + + if (avail < 2) + goto done; + cur = in->cur[0]; + if (cur != '<') { + ctxt->instate = XML_PARSER_CONTENT; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering CONTENT\n"); +#endif + break; + } + if (in->cur[1] == '/') { + ctxt->instate = XML_PARSER_END_TAG; + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering END_TAG\n"); +#endif + break; + } + if ((!terminate) && + (htmlParseLookupSequence(ctxt, '>', 0, 0) < 0)) + goto done; + + oldname = xmlStrdup(ctxt->name); + htmlParseStartTag(ctxt); + name = ctxt->name; +#ifdef DEBUG + if (oldname == NULL) + xmlGenericError(xmlGenericErrorContext, + "Start of element %s\n", name); + else if (name == NULL) + xmlGenericError(xmlGenericErrorContext, + "Start of element failed, was %s\n", + oldname); + else + xmlGenericError(xmlGenericErrorContext, + "Start of element %s, was %s\n", + name, oldname); +#endif + if (((depth == ctxt->nameNr) && + (xmlStrEqual(oldname, ctxt->name))) || + (name == NULL)) { + if (CUR == '>') + NEXT; + if (oldname != NULL) + xmlFree(oldname); + break; + } + if (oldname != NULL) + xmlFree(oldname); + + /* + * Lookup the info for that element. + */ + info = htmlTagLookup(name); + if (info == NULL) { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, "Tag %s invalid\n", + name); + ctxt->wellFormed = 0; + } else if (info->depr) { + /*************************** + if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL)) + ctxt->sax->warning(ctxt->userData, + "Tag %s is deprecated\n", + name); + ***************************/ + } + + /* + * Check for an Empty Element labeled the XML/SGML way + */ + if ((CUR == '/') && (NXT(1) == '>')) { + SKIP(2); + if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) + ctxt->sax->endElement(ctxt->userData, name); + oldname = htmlnamePop(ctxt); +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"End of tag the XML way: popping out %s\n", + oldname); +#endif + if (oldname != NULL) + xmlFree(oldname); + ctxt->instate = XML_PARSER_CONTENT; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering CONTENT\n"); +#endif + break; + } + + if (CUR == '>') { + NEXT; + } else { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, + "Couldn't find end of Start Tag %s\n", + name); + ctxt->wellFormed = 0; + + /* + * end of parsing of this node. + */ + if (xmlStrEqual(name, ctxt->name)) { + nodePop(ctxt); + oldname = htmlnamePop(ctxt); +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext, + "End of start tag problem: popping out %s\n", oldname); +#endif + if (oldname != NULL) + xmlFree(oldname); + } + + ctxt->instate = XML_PARSER_CONTENT; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering CONTENT\n"); +#endif + break; + } + + /* + * Check for an Empty Element from DTD definition + */ + if ((info != NULL) && (info->empty)) { + if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) + ctxt->sax->endElement(ctxt->userData, name); + oldname = htmlnamePop(ctxt); +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext,"End of empty tag %s : popping out %s\n", name, oldname); +#endif + if (oldname != NULL) + xmlFree(oldname); + } + ctxt->instate = XML_PARSER_CONTENT; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering CONTENT\n"); +#endif + break; + } + case XML_PARSER_CONTENT: { + long cons; + /* + * Handle preparsed entities and charRef + */ + if (ctxt->token != 0) { + xmlChar chr[2] = { 0 , 0 } ; + + chr[0] = (xmlChar) ctxt->token; + htmlCheckParagraph(ctxt); + if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL)) + ctxt->sax->characters(ctxt->userData, chr, 1); + ctxt->token = 0; + ctxt->checkIndex = 0; + } + if ((avail == 1) && (terminate)) { + cur = in->cur[0]; + if ((cur != '<') && (cur != '&')) { + if (ctxt->sax != NULL) { + if (IS_BLANK(cur)) { + if (ctxt->sax->ignorableWhitespace != NULL) + ctxt->sax->ignorableWhitespace( + ctxt->userData, &cur, 1); + } else { + htmlCheckParagraph(ctxt); + if (ctxt->sax->characters != NULL) + ctxt->sax->characters( + ctxt->userData, &cur, 1); + } + } + ctxt->token = 0; + ctxt->checkIndex = 0; + in->cur++; + break; + } + } + if (avail < 2) + goto done; + cur = in->cur[0]; + next = in->cur[1]; + cons = ctxt->nbChars; + if ((xmlStrEqual(ctxt->name, BAD_CAST"script")) || + (xmlStrEqual(ctxt->name, BAD_CAST"style"))) { + /* + * Handle SCRIPT/STYLE separately + */ + if ((!terminate) && + (htmlParseLookupSequence(ctxt, '<', '/', 0) < 0)) + goto done; + htmlParseScript(ctxt); + if ((cur == '<') && (next == '/')) { + ctxt->instate = XML_PARSER_END_TAG; + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering END_TAG\n"); +#endif + break; + } + } else { + /* + * Sometimes DOCTYPE arrives in the middle of the document + */ + if ((cur == '<') && (next == '!') && + (UPP(2) == 'D') && (UPP(3) == 'O') && + (UPP(4) == 'C') && (UPP(5) == 'T') && + (UPP(6) == 'Y') && (UPP(7) == 'P') && + (UPP(8) == 'E')) { + if ((!terminate) && + (htmlParseLookupSequence(ctxt, '>', 0, 0) < 0)) + goto done; + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, + "Misplaced DOCTYPE declaration\n"); + ctxt->wellFormed = 0; + htmlParseDocTypeDecl(ctxt); + } else if ((cur == '<') && (next == '!') && + (in->cur[2] == '-') && (in->cur[3] == '-')) { + if ((!terminate) && + (htmlParseLookupSequence(ctxt, '-', '-', '>') < 0)) + goto done; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: Parsing Comment\n"); +#endif + htmlParseComment(ctxt); + ctxt->instate = XML_PARSER_CONTENT; + } else if ((cur == '<') && (next == '!') && (avail < 4)) { + goto done; + } else if ((cur == '<') && (next == '/')) { + ctxt->instate = XML_PARSER_END_TAG; + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering END_TAG\n"); +#endif + break; + } else if (cur == '<') { + ctxt->instate = XML_PARSER_START_TAG; + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering START_TAG\n"); +#endif + break; + } else if (cur == '&') { + if ((!terminate) && + (htmlParseLookupSequence(ctxt, ';', 0, 0) < 0)) + goto done; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: Parsing Reference\n"); +#endif + /* TODO: check generation of subtrees if noent !!! */ + htmlParseReference(ctxt); + } else { + /* TODO Avoid the extra copy, handle directly !!!!!! */ + /* + * Goal of the following test is: + * - minimize calls to the SAX 'character' callback + * when they are mergeable + */ + if ((ctxt->inputNr == 1) && + (avail < HTML_PARSER_BIG_BUFFER_SIZE)) { + if ((!terminate) && + (htmlParseLookupSequence(ctxt, '<', 0, 0) < 0)) + goto done; + } + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: Parsing char data\n"); +#endif + htmlParseCharData(ctxt); + } + } + if (cons == ctxt->nbChars) { + if (ctxt->node != NULL) { + if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) + ctxt->sax->error(ctxt->userData, + "detected an error in element content\n"); + ctxt->wellFormed = 0; + } + NEXT; + break; + } + + break; + } + case XML_PARSER_END_TAG: + if (avail < 2) + goto done; + if ((!terminate) && + (htmlParseLookupSequence(ctxt, '>', 0, 0) < 0)) + goto done; + htmlParseEndTag(ctxt); + if (ctxt->nameNr == 0) { + ctxt->instate = XML_PARSER_EPILOG; + } else { + ctxt->instate = XML_PARSER_CONTENT; + } + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering CONTENT\n"); +#endif + break; + case XML_PARSER_CDATA_SECTION: + xmlGenericError(xmlGenericErrorContext, + "HPP: internal error, state == CDATA\n"); + ctxt->instate = XML_PARSER_CONTENT; + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering CONTENT\n"); +#endif + break; + case XML_PARSER_DTD: + xmlGenericError(xmlGenericErrorContext, + "HPP: internal error, state == DTD\n"); + ctxt->instate = XML_PARSER_CONTENT; + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering CONTENT\n"); +#endif + break; + case XML_PARSER_COMMENT: + xmlGenericError(xmlGenericErrorContext, + "HPP: internal error, state == COMMENT\n"); + ctxt->instate = XML_PARSER_CONTENT; + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering CONTENT\n"); +#endif + break; + case XML_PARSER_PI: + xmlGenericError(xmlGenericErrorContext, + "HPP: internal error, state == PI\n"); + ctxt->instate = XML_PARSER_CONTENT; + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering CONTENT\n"); +#endif + break; + case XML_PARSER_ENTITY_DECL: + xmlGenericError(xmlGenericErrorContext, + "HPP: internal error, state == ENTITY_DECL\n"); + ctxt->instate = XML_PARSER_CONTENT; + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering CONTENT\n"); +#endif + break; + case XML_PARSER_ENTITY_VALUE: + xmlGenericError(xmlGenericErrorContext, + "HPP: internal error, state == ENTITY_VALUE\n"); + ctxt->instate = XML_PARSER_CONTENT; + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering DTD\n"); +#endif + break; + case XML_PARSER_ATTRIBUTE_VALUE: + xmlGenericError(xmlGenericErrorContext, + "HPP: internal error, state == ATTRIBUTE_VALUE\n"); + ctxt->instate = XML_PARSER_START_TAG; + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering START_TAG\n"); +#endif + break; + case XML_PARSER_SYSTEM_LITERAL: + xmlGenericError(xmlGenericErrorContext, + "HPP: internal error, state == XML_PARSER_SYSTEM_LITERAL\n"); + ctxt->instate = XML_PARSER_CONTENT; + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering CONTENT\n"); +#endif + break; + case XML_PARSER_IGNORE: + xmlGenericError(xmlGenericErrorContext, + "HPP: internal error, state == XML_PARSER_IGNORE\n"); + ctxt->instate = XML_PARSER_CONTENT; + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering CONTENT\n"); +#endif + break; + case XML_PARSER_PUBLIC_LITERAL: + xmlGenericError(xmlGenericErrorContext, + "HPP: internal error, state == XML_PARSER_LITERAL\n"); + ctxt->instate = XML_PARSER_CONTENT; + ctxt->checkIndex = 0; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, + "HPP: entering CONTENT\n"); +#endif + break; + + } + } +done: + if ((avail == 0) && (terminate)) { + htmlAutoCloseOnEnd(ctxt); + if ((ctxt->nameNr == 0) && (ctxt->instate != XML_PARSER_EOF)) { + /* + * SAX: end of the document processing. + */ + ctxt->instate = XML_PARSER_EOF; + if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) + ctxt->sax->endDocument(ctxt->userData); + } + } + if ((ctxt->myDoc != NULL) && + ((terminate) || (ctxt->instate == XML_PARSER_EOF) || + (ctxt->instate == XML_PARSER_EPILOG))) { + xmlDtdPtr dtd; + dtd = xmlGetIntSubset(ctxt->myDoc); + if (dtd == NULL) + ctxt->myDoc->intSubset = + xmlCreateIntSubset(ctxt->myDoc, BAD_CAST "HTML", + BAD_CAST "-//W3C//DTD HTML 4.0 Transitional//EN", + BAD_CAST "http://www.w3.org/TR/REC-html40/loose.dtd"); + } +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, "HPP: done %d\n", ret); +#endif + return(ret); +} + +/** + * htmlParseChunk: + * @ctxt: an XML parser context + * @chunk: an char array + * @size: the size in byte of the chunk + * @terminate: last chunk indicator + * + * Parse a Chunk of memory + * + * Returns zero if no error, the xmlParserErrors otherwise. + */ +int +htmlParseChunk(htmlParserCtxtPtr ctxt, const char *chunk, int size, + int terminate) { + if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) && + (ctxt->input->buf != NULL) && (ctxt->instate != XML_PARSER_EOF)) { + int base = ctxt->input->base - ctxt->input->buf->buffer->content; + int cur = ctxt->input->cur - ctxt->input->base; + + xmlParserInputBufferPush(ctxt->input->buf, size, chunk); + ctxt->input->base = ctxt->input->buf->buffer->content + base; + ctxt->input->cur = ctxt->input->base + cur; +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, "HPP: pushed %d\n", size); +#endif + + if ((terminate) || (ctxt->input->buf->buffer->use > 80)) + htmlParseTryOrFinish(ctxt, terminate); + } else if (ctxt->instate != XML_PARSER_EOF) { + xmlParserInputBufferPush(ctxt->input->buf, 0, ""); + htmlParseTryOrFinish(ctxt, terminate); + } + if (terminate) { + if ((ctxt->instate != XML_PARSER_EOF) && + (ctxt->instate != XML_PARSER_EPILOG) && + (ctxt->instate != XML_PARSER_MISC)) { + ctxt->errNo = XML_ERR_DOCUMENT_END; + ctxt->wellFormed = 0; + } + if (ctxt->instate != XML_PARSER_EOF) { + if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) + ctxt->sax->endDocument(ctxt->userData); + } + ctxt->instate = XML_PARSER_EOF; + } + return((xmlParserErrors) ctxt->errNo); +} + +/************************************************************************ + * * + * User entry points * + * * + ************************************************************************/ + +/** + * htmlCreatePushParserCtxt: + * @sax: a SAX handler + * @user_data: The user data returned on SAX callbacks + * @chunk: a pointer to an array of chars + * @size: number of chars in the array + * @filename: an optional file name or URI + * @enc: an optional encoding + * + * Create a parser context for using the HTML parser in push mode + * To allow content encoding detection, @size should be >= 4 + * The value of @filename is used for fetching external entities + * and error/warning reports. + * + * Returns the new parser context or NULL + */ +htmlParserCtxtPtr +htmlCreatePushParserCtxt(htmlSAXHandlerPtr sax, void *user_data, + const char *chunk, int size, const char *filename, + xmlCharEncoding enc) { + htmlParserCtxtPtr ctxt; + htmlParserInputPtr inputStream; + xmlParserInputBufferPtr buf; + + xmlInitParser(); + + buf = xmlAllocParserInputBuffer(enc); + if (buf == NULL) return(NULL); + + ctxt = (htmlParserCtxtPtr) xmlMalloc(sizeof(htmlParserCtxt)); + if (ctxt == NULL) { + xmlFree(buf); + return(NULL); + } + memset(ctxt, 0, sizeof(htmlParserCtxt)); + htmlInitParserCtxt(ctxt); + if (sax != NULL) { + if (ctxt->sax != &htmlDefaultSAXHandler) + xmlFree(ctxt->sax); + ctxt->sax = (htmlSAXHandlerPtr) xmlMalloc(sizeof(htmlSAXHandler)); + if (ctxt->sax == NULL) { + xmlFree(buf); + xmlFree(ctxt); + return(NULL); + } + memcpy(ctxt->sax, sax, sizeof(htmlSAXHandler)); + if (user_data != NULL) + ctxt->userData = user_data; + } + if (filename == NULL) { + ctxt->directory = NULL; + } else { + ctxt->directory = xmlParserGetDirectory(filename); + } + + inputStream = htmlNewInputStream(ctxt); + if (inputStream == NULL) { + xmlFreeParserCtxt(ctxt); + return(NULL); + } + + if (filename == NULL) + inputStream->filename = NULL; + else + inputStream->filename = xmlMemStrdup(filename); + inputStream->buf = buf; + inputStream->base = inputStream->buf->buffer->content; + inputStream->cur = inputStream->buf->buffer->content; + + inputPush(ctxt, inputStream); + + if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) && + (ctxt->input->buf != NULL)) { + xmlParserInputBufferPush(ctxt->input->buf, size, chunk); +#ifdef DEBUG_PUSH + xmlGenericError(xmlGenericErrorContext, "HPP: pushed %d\n", size); +#endif + } + + return(ctxt); +} + +/** + * htmlSAXParseDoc: + * @cur: a pointer to an array of xmlChar + * @encoding: a free form C string describing the HTML document encoding, or NULL + * @sax: the SAX handler block + * @userData: if using SAX, this pointer will be provided on callbacks. + * + * Parse an HTML in-memory document. If sax is not NULL, use the SAX callbacks + * to handle parse events. If sax is NULL, fallback to the default DOM + * behavior and return a tree. + * + * Returns the resulting document tree unless SAX is NULL or the document is + * not well formed. + */ + +htmlDocPtr +htmlSAXParseDoc(xmlChar *cur, const char *encoding, htmlSAXHandlerPtr sax, void *userData) { + htmlDocPtr ret; + htmlParserCtxtPtr ctxt; + + xmlInitParser(); + + if (cur == NULL) return(NULL); + + + ctxt = htmlCreateDocParserCtxt(cur, encoding); + if (ctxt == NULL) return(NULL); + if (sax != NULL) { + ctxt->sax = sax; + ctxt->userData = userData; + } + + htmlParseDocument(ctxt); + ret = ctxt->myDoc; + if (sax != NULL) { + ctxt->sax = NULL; + ctxt->userData = NULL; + } + htmlFreeParserCtxt(ctxt); + + return(ret); +} + +/** + * htmlParseDoc: + * @cur: a pointer to an array of xmlChar + * @encoding: a free form C string describing the HTML document encoding, or NULL + * + * parse an HTML in-memory document and build a tree. + * + * Returns the resulting document tree + */ + +htmlDocPtr +htmlParseDoc(xmlChar *cur, const char *encoding) { + return(htmlSAXParseDoc(cur, encoding, NULL, NULL)); +} + + +/** + * htmlCreateFileParserCtxt: + * @filename: the filename + * @encoding: a free form C string describing the HTML document encoding, or NULL + * + * Create a parser context for a file content. + * Automatic support for ZLIB/Compress compressed document is provided + * by default if found at compile-time. + * + * Returns the new parser context or NULL + */ +htmlParserCtxtPtr +htmlCreateFileParserCtxt(const char *filename, const char *encoding) +{ + htmlParserCtxtPtr ctxt; + htmlParserInputPtr inputStream; + xmlParserInputBufferPtr buf; + /* htmlCharEncoding enc; */ + xmlChar *content, *content_line = (xmlChar *) "charset="; + + buf = xmlParserInputBufferCreateFilename(filename, XML_CHAR_ENCODING_NONE); + if (buf == NULL) return(NULL); + + ctxt = (htmlParserCtxtPtr) xmlMalloc(sizeof(htmlParserCtxt)); + if (ctxt == NULL) { + xmlGenericError(xmlGenericErrorContext, "malloc failed\n"); + return(NULL); + } + memset(ctxt, 0, sizeof(htmlParserCtxt)); + htmlInitParserCtxt(ctxt); + inputStream = (htmlParserInputPtr) xmlMalloc(sizeof(htmlParserInput)); + if (inputStream == NULL) { + xmlGenericError(xmlGenericErrorContext, "malloc failed\n"); + xmlFree(ctxt); + return(NULL); + } + memset(inputStream, 0, sizeof(htmlParserInput)); + + inputStream->filename = (char *) + xmlNormalizeWindowsPath((xmlChar *)filename); + inputStream->line = 1; + inputStream->col = 1; + inputStream->buf = buf; + inputStream->directory = NULL; + + inputStream->base = inputStream->buf->buffer->content; + inputStream->cur = inputStream->buf->buffer->content; + inputStream->free = NULL; + + inputPush(ctxt, inputStream); + + /* set encoding */ + if (encoding) { + content = xmlMalloc (xmlStrlen(content_line) + strlen(encoding) + 1); + if (content) { + strcpy ((char *)content, (char *)content_line); + strcat ((char *)content, (char *)encoding); + htmlCheckEncoding (ctxt, content); + xmlFree (content); + } + } + + return(ctxt); +} + +/** + * htmlSAXParseFile: + * @filename: the filename + * @encoding: a free form C string describing the HTML document encoding, or NULL + * @sax: the SAX handler block + * @userData: if using SAX, this pointer will be provided on callbacks. + * + * parse an HTML file and build a tree. Automatic support for ZLIB/Compress + * compressed document is provided by default if found at compile-time. + * It use the given SAX function block to handle the parsing callback. + * If sax is NULL, fallback to the default DOM tree building routines. + * + * Returns the resulting document tree unless SAX is NULL or the document is + * not well formed. + */ + +htmlDocPtr +htmlSAXParseFile(const char *filename, const char *encoding, htmlSAXHandlerPtr sax, + void *userData) { + htmlDocPtr ret; + htmlParserCtxtPtr ctxt; + htmlSAXHandlerPtr oldsax = NULL; + + xmlInitParser(); + + ctxt = htmlCreateFileParserCtxt(filename, encoding); + if (ctxt == NULL) return(NULL); + if (sax != NULL) { + oldsax = ctxt->sax; + ctxt->sax = sax; + ctxt->userData = userData; + } + + htmlParseDocument(ctxt); + + ret = ctxt->myDoc; + if (sax != NULL) { + ctxt->sax = oldsax; + ctxt->userData = NULL; + } + htmlFreeParserCtxt(ctxt); + + return(ret); +} + +/** + * htmlParseFile: + * @filename: the filename + * @encoding: a free form C string describing the HTML document encoding, or NULL + * + * parse an HTML file and build a tree. Automatic support for ZLIB/Compress + * compressed document is provided by default if found at compile-time. + * + * Returns the resulting document tree + */ + +htmlDocPtr +htmlParseFile(const char *filename, const char *encoding) { + return(htmlSAXParseFile(filename, encoding, NULL, NULL)); +} + +/** + * htmlHandleOmittedElem: + * @val: int 0 or 1 + * + * Set and return the previous value for handling HTML omitted tags. + * + * Returns the last value for 0 for no handling, 1 for auto insertion. + */ + +int +htmlHandleOmittedElem(int val) { + int old = htmlOmittedDefaultValue; + + htmlOmittedDefaultValue = val; + return(old); +} + +#endif /* LIBXML_HTML_ENABLED */ -- cgit v1.2.1