| /* |
| * HTMLtree.c : implementation of access function for an HTML tree. |
| * |
| * See Copyright for the status of this software. |
| * |
| * daniel@veillard.com |
| */ |
| |
| |
| #define IN_LIBXML |
| #include "libxml.h" |
| #ifdef LIBXML_HTML_ENABLED |
| |
| #ifdef HAVE_STRING_H |
| #include <string.h> /* for memset() only ! */ |
| #endif |
| |
| #ifdef HAVE_CTYPE_H |
| #include <ctype.h> |
| #endif |
| #ifdef HAVE_STDLIB_H |
| #include <stdlib.h> |
| #endif |
| |
| #include <libxml/xmlmemory.h> |
| #include <libxml/HTMLparser.h> |
| #include <libxml/HTMLtree.h> |
| #include <libxml/entities.h> |
| #include <libxml/valid.h> |
| #include <libxml/xmlerror.h> |
| #include <libxml/parserInternals.h> |
| #include <libxml/globals.h> |
| #include <libxml/uri.h> |
| |
| #include "buf.h" |
| |
| /************************************************************************ |
| * * |
| * Getting/Setting encoding meta tags * |
| * * |
| ************************************************************************/ |
| |
| /** |
| * htmlGetMetaEncoding: |
| * @doc: the document |
| * |
| * Encoding definition lookup in the Meta tags |
| * |
| * Returns the current encoding as flagged in the HTML source |
| */ |
| const xmlChar * |
| htmlGetMetaEncoding(htmlDocPtr doc) { |
| htmlNodePtr cur; |
| const xmlChar *content; |
| const xmlChar *encoding; |
| |
| if (doc == NULL) |
| return(NULL); |
| cur = doc->children; |
| |
| /* |
| * Search the html |
| */ |
| while (cur != NULL) { |
| if ((cur->type == XML_ELEMENT_NODE) && (cur->name != NULL)) { |
| if (xmlStrEqual(cur->name, BAD_CAST"html")) |
| break; |
| if (xmlStrEqual(cur->name, BAD_CAST"head")) |
| goto found_head; |
| if (xmlStrEqual(cur->name, BAD_CAST"meta")) |
| goto found_meta; |
| } |
| cur = cur->next; |
| } |
| if (cur == NULL) |
| return(NULL); |
| cur = cur->children; |
| |
| /* |
| * Search the head |
| */ |
| while (cur != NULL) { |
| if ((cur->type == XML_ELEMENT_NODE) && (cur->name != NULL)) { |
| if (xmlStrEqual(cur->name, BAD_CAST"head")) |
| break; |
| if (xmlStrEqual(cur->name, BAD_CAST"meta")) |
| goto found_meta; |
| } |
| cur = cur->next; |
| } |
| if (cur == NULL) |
| return(NULL); |
| found_head: |
| cur = cur->children; |
| |
| /* |
| * Search the meta elements |
| */ |
| found_meta: |
| while (cur != NULL) { |
| if ((cur->type == XML_ELEMENT_NODE) && (cur->name != NULL)) { |
| if (xmlStrEqual(cur->name, BAD_CAST"meta")) { |
| xmlAttrPtr attr = cur->properties; |
| int http; |
| const xmlChar *value; |
| |
| content = NULL; |
| http = 0; |
| while (attr != NULL) { |
| if ((attr->children != NULL) && |
| (attr->children->type == XML_TEXT_NODE) && |
| (attr->children->next == NULL)) { |
| value = attr->children->content; |
| if ((!xmlStrcasecmp(attr->name, BAD_CAST"http-equiv")) |
| && (!xmlStrcasecmp(value, BAD_CAST"Content-Type"))) |
| http = 1; |
| else if ((value != NULL) |
| && (!xmlStrcasecmp(attr->name, BAD_CAST"content"))) |
| content = value; |
| if ((http != 0) && (content != NULL)) |
| goto found_content; |
| } |
| attr = attr->next; |
| } |
| } |
| } |
| cur = cur->next; |
| } |
| return(NULL); |
| |
| found_content: |
| encoding = xmlStrstr(content, BAD_CAST"charset="); |
| if (encoding == NULL) |
| encoding = xmlStrstr(content, BAD_CAST"Charset="); |
| if (encoding == NULL) |
| encoding = xmlStrstr(content, BAD_CAST"CHARSET="); |
| if (encoding != NULL) { |
| encoding += 8; |
| } else { |
| encoding = xmlStrstr(content, BAD_CAST"charset ="); |
| if (encoding == NULL) |
| encoding = xmlStrstr(content, BAD_CAST"Charset ="); |
| if (encoding == NULL) |
| encoding = xmlStrstr(content, BAD_CAST"CHARSET ="); |
| if (encoding != NULL) |
| encoding += 9; |
| } |
| if (encoding != NULL) { |
| while ((*encoding == ' ') || (*encoding == '\t')) encoding++; |
| } |
| return(encoding); |
| } |
| |
| /** |
| * htmlSetMetaEncoding: |
| * @doc: the document |
| * @encoding: the encoding string |
| * |
| * Sets the current encoding in the Meta tags |
| * NOTE: this will not change the document content encoding, just |
| * the META flag associated. |
| * |
| * Returns 0 in case of success and -1 in case of error |
| */ |
| int |
| htmlSetMetaEncoding(htmlDocPtr doc, const xmlChar *encoding) { |
| htmlNodePtr cur, meta = NULL, head = NULL; |
| const xmlChar *content = NULL; |
| char newcontent[100]; |
| |
| newcontent[0] = 0; |
| |
| if (doc == NULL) |
| return(-1); |
| |
| /* html isn't a real encoding it's just libxml2 way to get entities */ |
| if (!xmlStrcasecmp(encoding, BAD_CAST "html")) |
| return(-1); |
| |
| if (encoding != NULL) { |
| XML_SNPRINTF(newcontent, sizeof(newcontent), "text/html; charset=%s", |
| (char *)encoding); |
| newcontent[sizeof(newcontent) - 1] = 0; |
| } |
| |
| cur = doc->children; |
| |
| /* |
| * Search the html |
| */ |
| while (cur != NULL) { |
| if ((cur->type == XML_ELEMENT_NODE) && (cur->name != NULL)) { |
| if (xmlStrcasecmp(cur->name, BAD_CAST"html") == 0) |
| break; |
| if (xmlStrcasecmp(cur->name, BAD_CAST"head") == 0) |
| goto found_head; |
| if (xmlStrcasecmp(cur->name, BAD_CAST"meta") == 0) |
| goto found_meta; |
| } |
| cur = cur->next; |
| } |
| if (cur == NULL) |
| return(-1); |
| cur = cur->children; |
| |
| /* |
| * Search the head |
| */ |
| while (cur != NULL) { |
| if ((cur->type == XML_ELEMENT_NODE) && (cur->name != NULL)) { |
| if (xmlStrcasecmp(cur->name, BAD_CAST"head") == 0) |
| break; |
| if (xmlStrcasecmp(cur->name, BAD_CAST"meta") == 0) { |
| head = cur->parent; |
| goto found_meta; |
| } |
| } |
| cur = cur->next; |
| } |
| if (cur == NULL) |
| return(-1); |
| found_head: |
| head = cur; |
| if (cur->children == NULL) |
| goto create; |
| cur = cur->children; |
| |
| found_meta: |
| /* |
| * Search and update all the remaining the meta elements carrying |
| * encoding informations |
| */ |
| while (cur != NULL) { |
| if ((cur->type == XML_ELEMENT_NODE) && (cur->name != NULL)) { |
| if (xmlStrcasecmp(cur->name, BAD_CAST"meta") == 0) { |
| xmlAttrPtr attr = cur->properties; |
| int http; |
| const xmlChar *value; |
| |
| content = NULL; |
| http = 0; |
| while (attr != NULL) { |
| if ((attr->children != NULL) && |
| (attr->children->type == XML_TEXT_NODE) && |
| (attr->children->next == NULL)) { |
| value = attr->children->content; |
| if ((!xmlStrcasecmp(attr->name, BAD_CAST"http-equiv")) |
| && (!xmlStrcasecmp(value, BAD_CAST"Content-Type"))) |
| http = 1; |
| else |
| { |
| if ((value != NULL) && |
| (!xmlStrcasecmp(attr->name, BAD_CAST"content"))) |
| content = value; |
| } |
| if ((http != 0) && (content != NULL)) |
| break; |
| } |
| attr = attr->next; |
| } |
| if ((http != 0) && (content != NULL)) { |
| meta = cur; |
| break; |
| } |
| |
| } |
| } |
| cur = cur->next; |
| } |
| create: |
| if (meta == NULL) { |
| if ((encoding != NULL) && (head != NULL)) { |
| /* |
| * Create a new Meta element with the right attributes |
| */ |
| |
| meta = xmlNewDocNode(doc, NULL, BAD_CAST"meta", NULL); |
| if (head->children == NULL) |
| xmlAddChild(head, meta); |
| else |
| xmlAddPrevSibling(head->children, meta); |
| xmlNewProp(meta, BAD_CAST"http-equiv", BAD_CAST"Content-Type"); |
| xmlNewProp(meta, BAD_CAST"content", BAD_CAST newcontent); |
| } |
| } else { |
| /* remove the meta tag if NULL is passed */ |
| if (encoding == NULL) { |
| xmlUnlinkNode(meta); |
| xmlFreeNode(meta); |
| } |
| /* change the document only if there is a real encoding change */ |
| else if (xmlStrcasestr(content, encoding) == NULL) { |
| xmlSetProp(meta, BAD_CAST"content", BAD_CAST newcontent); |
| } |
| } |
| |
| |
| return(0); |
| } |
| |
| /** |
| * booleanHTMLAttrs: |
| * |
| * These are the HTML attributes which will be output |
| * in minimized form, i.e. <option selected="selected"> will be |
| * output as <option selected>, as per XSLT 1.0 16.2 "HTML Output Method" |
| * |
| */ |
| static const char* htmlBooleanAttrs[] = { |
| "checked", "compact", "declare", "defer", "disabled", "ismap", |
| "multiple", "nohref", "noresize", "noshade", "nowrap", "readonly", |
| "selected", NULL |
| }; |
| |
| |
| /** |
| * htmlIsBooleanAttr: |
| * @name: the name of the attribute to check |
| * |
| * Determine if a given attribute is a boolean attribute. |
| * |
| * returns: false if the attribute is not boolean, true otherwise. |
| */ |
| int |
| htmlIsBooleanAttr(const xmlChar *name) |
| { |
| int i = 0; |
| |
| while (htmlBooleanAttrs[i] != NULL) { |
| if (xmlStrcasecmp((const xmlChar *)htmlBooleanAttrs[i], name) == 0) |
| return 1; |
| i++; |
| } |
| return 0; |
| } |
| |
| #ifdef LIBXML_OUTPUT_ENABLED |
| /* |
| * private routine exported from xmlIO.c |
| */ |
| xmlOutputBufferPtr |
| xmlAllocOutputBufferInternal(xmlCharEncodingHandlerPtr encoder); |
| /************************************************************************ |
| * * |
| * Output error handlers * |
| * * |
| ************************************************************************/ |
| /** |
| * htmlSaveErrMemory: |
| * @extra: extra informations |
| * |
| * Handle an out of memory condition |
| */ |
| static void |
| htmlSaveErrMemory(const char *extra) |
| { |
| __xmlSimpleError(XML_FROM_OUTPUT, XML_ERR_NO_MEMORY, NULL, NULL, extra); |
| } |
| |
| /** |
| * htmlSaveErr: |
| * @code: the error number |
| * @node: the location of the error. |
| * @extra: extra informations |
| * |
| * Handle an out of memory condition |
| */ |
| static void |
| htmlSaveErr(int code, xmlNodePtr node, const char *extra) |
| { |
| const char *msg = NULL; |
| |
| switch(code) { |
| case XML_SAVE_NOT_UTF8: |
| msg = "string is not in UTF-8\n"; |
| break; |
| case XML_SAVE_CHAR_INVALID: |
| msg = "invalid character value\n"; |
| break; |
| case XML_SAVE_UNKNOWN_ENCODING: |
| msg = "unknown encoding %s\n"; |
| break; |
| case XML_SAVE_NO_DOCTYPE: |
| msg = "HTML has no DOCTYPE\n"; |
| break; |
| default: |
| msg = "unexpected error number\n"; |
| } |
| __xmlSimpleError(XML_FROM_OUTPUT, code, node, msg, extra); |
| } |
| |
| /************************************************************************ |
| * * |
| * Dumping HTML tree content to a simple buffer * |
| * * |
| ************************************************************************/ |
| |
| /** |
| * htmlBufNodeDumpFormat: |
| * @buf: the xmlBufPtr output |
| * @doc: the document |
| * @cur: the current node |
| * @format: should formatting spaces been added |
| * |
| * Dump an HTML node, recursive behaviour,children are printed too. |
| * |
| * Returns the number of byte written or -1 in case of error |
| */ |
| static size_t |
| htmlBufNodeDumpFormat(xmlBufPtr buf, xmlDocPtr doc, xmlNodePtr cur, |
| int format) { |
| size_t use; |
| int ret; |
| xmlOutputBufferPtr outbuf; |
| |
| if (cur == NULL) { |
| return (-1); |
| } |
| if (buf == NULL) { |
| return (-1); |
| } |
| outbuf = (xmlOutputBufferPtr) xmlMalloc(sizeof(xmlOutputBuffer)); |
| if (outbuf == NULL) { |
| htmlSaveErrMemory("allocating HTML output buffer"); |
| return (-1); |
| } |
| XML_MEMSET(outbuf, 0, (size_t) sizeof(xmlOutputBuffer)); |
| outbuf->buffer = buf; |
| outbuf->encoder = NULL; |
| outbuf->writecallback = NULL; |
| outbuf->closecallback = NULL; |
| outbuf->context = NULL; |
| outbuf->written = 0; |
| |
| use = xmlBufUse(buf); |
| htmlNodeDumpFormatOutput(outbuf, doc, cur, NULL, format); |
| xmlFree(outbuf); |
| ret = xmlBufUse(buf) - use; |
| return (ret); |
| } |
| |
| /** |
| * htmlNodeDump: |
| * @buf: the HTML buffer output |
| * @doc: the document |
| * @cur: the current node |
| * |
| * Dump an HTML node, recursive behaviour,children are printed too, |
| * and formatting returns are added. |
| * |
| * Returns the number of byte written or -1 in case of error |
| */ |
| int |
| htmlNodeDump(xmlBufferPtr buf, xmlDocPtr doc, xmlNodePtr cur) { |
| xmlBufPtr buffer; |
| size_t ret; |
| |
| if ((buf == NULL) || (cur == NULL)) |
| return(-1); |
| |
| xmlInitParser(); |
| buffer = xmlBufFromBuffer(buf); |
| if (buffer == NULL) |
| return(-1); |
| |
| ret = htmlBufNodeDumpFormat(buffer, doc, cur, 1); |
| |
| xmlBufBackToBuffer(buffer); |
| |
| if (ret > INT_MAX) |
| return(-1); |
| return((int) ret); |
| } |
| |
| /** |
| * htmlNodeDumpFileFormat: |
| * @out: the FILE pointer |
| * @doc: the document |
| * @cur: the current node |
| * @encoding: the document encoding |
| * @format: should formatting spaces been added |
| * |
| * Dump an HTML node, recursive behaviour,children are printed too. |
| * |
| * TODO: if encoding == NULL try to save in the doc encoding |
| * |
| * returns: the number of byte written or -1 in case of failure. |
| */ |
| int |
| htmlNodeDumpFileFormat(FILE *out, xmlDocPtr doc, |
| xmlNodePtr cur, const char *encoding, int format) { |
| xmlOutputBufferPtr buf; |
| xmlCharEncodingHandlerPtr handler = NULL; |
| int ret; |
| |
| xmlInitParser(); |
| |
| if (encoding != NULL) { |
| xmlCharEncoding enc; |
| |
| enc = xmlParseCharEncoding(encoding); |
| if (enc != XML_CHAR_ENCODING_UTF8) { |
| handler = xmlFindCharEncodingHandler(encoding); |
| if (handler == NULL) |
| htmlSaveErr(XML_SAVE_UNKNOWN_ENCODING, NULL, encoding); |
| } |
| } |
| |
| /* |
| * Fallback to HTML or ASCII when the encoding is unspecified |
| */ |
| if (handler == NULL) |
| handler = xmlFindCharEncodingHandler("HTML"); |
| if (handler == NULL) |
| handler = xmlFindCharEncodingHandler("ascii"); |
| |
| /* |
| * save the content to a temp buffer. |
| */ |
| buf = xmlOutputBufferCreateFile(out, handler); |
| if (buf == NULL) return(0); |
| |
| htmlNodeDumpFormatOutput(buf, doc, cur, encoding, format); |
| |
| ret = xmlOutputBufferClose(buf); |
| return(ret); |
| } |
| |
| /** |
| * htmlNodeDumpFile: |
| * @out: the FILE pointer |
| * @doc: the document |
| * @cur: the current node |
| * |
| * Dump an HTML node, recursive behaviour,children are printed too, |
| * and formatting returns are added. |
| */ |
| void |
| htmlNodeDumpFile(FILE *out, xmlDocPtr doc, xmlNodePtr cur) { |
| htmlNodeDumpFileFormat(out, doc, cur, NULL, 1); |
| } |
| |
| /** |
| * htmlDocDumpMemoryFormat: |
| * @cur: the document |
| * @mem: OUT: the memory pointer |
| * @size: OUT: the memory length |
| * @format: should formatting spaces been added |
| * |
| * Dump an HTML document in memory and return the xmlChar * and it's size. |
| * It's up to the caller to free the memory. |
| */ |
| void |
| htmlDocDumpMemoryFormat(xmlDocPtr cur, xmlChar**mem, int *size, int format) { |
| xmlOutputBufferPtr buf; |
| xmlCharEncodingHandlerPtr handler = NULL; |
| const char *encoding; |
| |
| xmlInitParser(); |
| |
| if ((mem == NULL) || (size == NULL)) |
| return; |
| if (cur == NULL) { |
| *mem = NULL; |
| *size = 0; |
| return; |
| } |
| |
| encoding = (const char *) htmlGetMetaEncoding(cur); |
| |
| if (encoding != NULL) { |
| xmlCharEncoding enc; |
| |
| enc = xmlParseCharEncoding(encoding); |
| if (enc != cur->charset) { |
| if (cur->charset != XML_CHAR_ENCODING_UTF8) { |
| /* |
| * Not supported yet |
| */ |
| *mem = NULL; |
| *size = 0; |
| return; |
| } |
| |
| handler = xmlFindCharEncodingHandler(encoding); |
| if (handler == NULL) |
| htmlSaveErr(XML_SAVE_UNKNOWN_ENCODING, NULL, encoding); |
| |
| } else { |
| handler = xmlFindCharEncodingHandler(encoding); |
| } |
| } |
| |
| /* |
| * Fallback to HTML or ASCII when the encoding is unspecified |
| */ |
| if (handler == NULL) |
| handler = xmlFindCharEncodingHandler("HTML"); |
| if (handler == NULL) |
| handler = xmlFindCharEncodingHandler("ascii"); |
| |
| buf = xmlAllocOutputBufferInternal(handler); |
| if (buf == NULL) { |
| *mem = NULL; |
| *size = 0; |
| return; |
| } |
| |
| htmlDocContentDumpFormatOutput(buf, cur, NULL, format); |
| |
| xmlOutputBufferFlush(buf); |
| if (buf->conv != NULL) { |
| *size = xmlBufUse(buf->conv); |
| *mem = xmlStrndup(xmlBufContent(buf->conv), *size); |
| } else { |
| *size = xmlBufUse(buf->buffer); |
| *mem = xmlStrndup(xmlBufContent(buf->buffer), *size); |
| } |
| (void)xmlOutputBufferClose(buf); |
| } |
| |
| /** |
| * htmlDocDumpMemory: |
| * @cur: the document |
| * @mem: OUT: the memory pointer |
| * @size: OUT: the memory length |
| * |
| * Dump an HTML document in memory and return the xmlChar * and it's size. |
| * It's up to the caller to free the memory. |
| */ |
| void |
| htmlDocDumpMemory(xmlDocPtr cur, xmlChar**mem, int *size) { |
| htmlDocDumpMemoryFormat(cur, mem, size, 1); |
| } |
| |
| |
| /************************************************************************ |
| * * |
| * Dumping HTML tree content to an I/O output buffer * |
| * * |
| ************************************************************************/ |
| |
| void xmlNsListDumpOutput(xmlOutputBufferPtr buf, xmlNsPtr cur); |
| |
| /** |
| * htmlDtdDumpOutput: |
| * @buf: the HTML buffer output |
| * @doc: the document |
| * @encoding: the encoding string |
| * |
| * TODO: check whether encoding is needed |
| * |
| * Dump the HTML document DTD, if any. |
| */ |
| static void |
| htmlDtdDumpOutput(xmlOutputBufferPtr buf, xmlDocPtr doc, |
| const char *encoding ATTRIBUTE_UNUSED) { |
| xmlDtdPtr cur = doc->intSubset; |
| |
| if (cur == NULL) { |
| htmlSaveErr(XML_SAVE_NO_DOCTYPE, (xmlNodePtr) doc, NULL); |
| return; |
| } |
| xmlOutputBufferWriteString(buf, "<!DOCTYPE "); |
| xmlOutputBufferWriteString(buf, (const char *)cur->name); |
| if (cur->ExternalID != NULL) { |
| xmlOutputBufferWriteString(buf, " PUBLIC "); |
| xmlBufWriteQuotedString(buf->buffer, cur->ExternalID); |
| if (cur->SystemID != NULL) { |
| xmlOutputBufferWriteString(buf, " "); |
| xmlBufWriteQuotedString(buf->buffer, cur->SystemID); |
| } |
| } else if (cur->SystemID != NULL) { |
| xmlOutputBufferWriteString(buf, " SYSTEM "); |
| xmlBufWriteQuotedString(buf->buffer, cur->SystemID); |
| } |
| xmlOutputBufferWriteString(buf, ">\n"); |
| } |
| |
| /** |
| * htmlAttrDumpOutput: |
| * @buf: the HTML buffer output |
| * @doc: the document |
| * @cur: the attribute pointer |
| * @encoding: the encoding string |
| * |
| * Dump an HTML attribute |
| */ |
| static void |
| htmlAttrDumpOutput(xmlOutputBufferPtr buf, xmlDocPtr doc, xmlAttrPtr cur, |
| const char *encoding ATTRIBUTE_UNUSED) { |
| xmlChar *value; |
| |
| /* |
| * The html output method should not escape a & character |
| * occurring in an attribute value immediately followed by |
| * a { character (see Section B.7.1 of the HTML 4.0 Recommendation). |
| * This is implemented in xmlEncodeEntitiesReentrant |
| */ |
| |
| if (cur == NULL) { |
| return; |
| } |
| xmlOutputBufferWriteString(buf, " "); |
| if ((cur->ns != NULL) && (cur->ns->prefix != NULL)) { |
| xmlOutputBufferWriteString(buf, (const char *)cur->ns->prefix); |
| xmlOutputBufferWriteString(buf, ":"); |
| } |
| xmlOutputBufferWriteString(buf, (const char *)cur->name); |
| if ((cur->children != NULL) && (!htmlIsBooleanAttr(cur->name))) { |
| value = xmlNodeListGetString(doc, cur->children, 0); |
| if (value) { |
| xmlOutputBufferWriteString(buf, "="); |
| if ((cur->ns == NULL) && (cur->parent != NULL) && |
| (cur->parent->ns == NULL) && |
| ((!xmlStrcasecmp(cur->name, BAD_CAST "href")) || |
| (!xmlStrcasecmp(cur->name, BAD_CAST "action")) || |
| (!xmlStrcasecmp(cur->name, BAD_CAST "src")) || |
| ((!xmlStrcasecmp(cur->name, BAD_CAST "name")) && |
| (!xmlStrcasecmp(cur->parent->name, BAD_CAST "a"))))) { |
| xmlChar *tmp = value; |
| /* xmlURIEscapeStr() escapes '"' so it can be safely used. */ |
| xmlBufCCat(buf->buffer, "\""); |
| |
| while (IS_BLANK_CH(*tmp)) tmp++; |
| |
| /* URI Escape everything, except server side includes. */ |
| for ( ; ; ) { |
| xmlChar *escaped; |
| xmlChar endChar; |
| xmlChar *end = NULL; |
| xmlChar *start = (xmlChar *)xmlStrstr(tmp, BAD_CAST "<!--"); |
| if (start != NULL) { |
| end = (xmlChar *)xmlStrstr(tmp, BAD_CAST "-->"); |
| if (end != NULL) { |
| *start = '\0'; |
| } |
| } |
| |
| /* Escape the whole string, or until start (set to '\0'). */ |
| escaped = xmlURIEscapeStr(tmp, BAD_CAST"@/:=?;#%&,+"); |
| if (escaped != NULL) { |
| xmlBufCat(buf->buffer, escaped); |
| xmlFree(escaped); |
| } else { |
| xmlBufCat(buf->buffer, tmp); |
| } |
| |
| if (end == NULL) { /* Everything has been written. */ |
| break; |
| } |
| |
| /* Do not escape anything within server side includes. */ |
| *start = '<'; /* Restore the first character of "<!--". */ |
| end += 3; /* XML_STRLEN("-->") */ |
| endChar = *end; |
| *end = '\0'; |
| xmlBufCat(buf->buffer, start); |
| *end = endChar; |
| tmp = end; |
| } |
| |
| xmlBufCCat(buf->buffer, "\""); |
| } else { |
| xmlBufWriteQuotedString(buf->buffer, value); |
| } |
| xmlFree(value); |
| } else { |
| xmlOutputBufferWriteString(buf, "=\"\""); |
| } |
| } |
| } |
| |
| /** |
| * htmlAttrListDumpOutput: |
| * @buf: the HTML buffer output |
| * @doc: the document |
| * @cur: the first attribute pointer |
| * @encoding: the encoding string |
| * |
| * Dump a list of HTML attributes |
| */ |
| static void |
| htmlAttrListDumpOutput(xmlOutputBufferPtr buf, xmlDocPtr doc, xmlAttrPtr cur, const char *encoding) { |
| if (cur == NULL) { |
| return; |
| } |
| while (cur != NULL) { |
| htmlAttrDumpOutput(buf, doc, cur, encoding); |
| cur = cur->next; |
| } |
| } |
| |
| |
| |
| /** |
| * htmlNodeListDumpOutput: |
| * @buf: the HTML buffer output |
| * @doc: the document |
| * @cur: the first node |
| * @encoding: the encoding string |
| * @format: should formatting spaces been added |
| * |
| * Dump an HTML node list, recursive behaviour,children are printed too. |
| */ |
| static void |
| htmlNodeListDumpOutput(xmlOutputBufferPtr buf, xmlDocPtr doc, |
| xmlNodePtr cur, const char *encoding, int format) { |
| if (cur == NULL) { |
| return; |
| } |
| while (cur != NULL) { |
| htmlNodeDumpFormatOutput(buf, doc, cur, encoding, format); |
| cur = cur->next; |
| } |
| } |
| |
| /** |
| * htmlNodeDumpFormatOutput: |
| * @buf: the HTML buffer output |
| * @doc: the document |
| * @cur: the current node |
| * @encoding: the encoding string |
| * @format: should formatting spaces been added |
| * |
| * Dump an HTML node, recursive behaviour,children are printed too. |
| */ |
| void |
| htmlNodeDumpFormatOutput(xmlOutputBufferPtr buf, xmlDocPtr doc, |
| xmlNodePtr cur, const char *encoding, int format) { |
| const htmlElemDesc * info; |
| |
| xmlInitParser(); |
| |
| if ((cur == NULL) || (buf == NULL)) { |
| return; |
| } |
| /* |
| * Special cases. |
| */ |
| if (cur->type == XML_DTD_NODE) |
| return; |
| if ((cur->type == XML_HTML_DOCUMENT_NODE) || |
| (cur->type == XML_DOCUMENT_NODE)){ |
| htmlDocContentDumpOutput(buf, (xmlDocPtr) cur, encoding); |
| return; |
| } |
| if (cur->type == XML_ATTRIBUTE_NODE) { |
| htmlAttrDumpOutput(buf, doc, (xmlAttrPtr) cur, encoding); |
| return; |
| } |
| if (cur->type == HTML_TEXT_NODE) { |
| if (cur->content != NULL) { |
| if (((cur->name == (const xmlChar *)xmlStringText) || |
| (cur->name != (const xmlChar *)xmlStringTextNoenc)) && |
| ((cur->parent == NULL) || |
| ((xmlStrcasecmp(cur->parent->name, BAD_CAST "script")) && |
| (xmlStrcasecmp(cur->parent->name, BAD_CAST "style"))))) { |
| xmlChar *buffer; |
| |
| buffer = xmlEncodeEntitiesReentrant(doc, cur->content); |
| if (buffer != NULL) { |
| xmlOutputBufferWriteString(buf, (const char *)buffer); |
| xmlFree(buffer); |
| } |
| } else { |
| xmlOutputBufferWriteString(buf, (const char *)cur->content); |
| } |
| } |
| return; |
| } |
| if (cur->type == HTML_COMMENT_NODE) { |
| if (cur->content != NULL) { |
| xmlOutputBufferWriteString(buf, "<!--"); |
| xmlOutputBufferWriteString(buf, (const char *)cur->content); |
| xmlOutputBufferWriteString(buf, "-->"); |
| } |
| return; |
| } |
| if (cur->type == HTML_PI_NODE) { |
| if (cur->name == NULL) |
| return; |
| xmlOutputBufferWriteString(buf, "<?"); |
| xmlOutputBufferWriteString(buf, (const char *)cur->name); |
| if (cur->content != NULL) { |
| xmlOutputBufferWriteString(buf, " "); |
| xmlOutputBufferWriteString(buf, (const char *)cur->content); |
| } |
| xmlOutputBufferWriteString(buf, ">"); |
| return; |
| } |
| if (cur->type == HTML_ENTITY_REF_NODE) { |
| xmlOutputBufferWriteString(buf, "&"); |
| xmlOutputBufferWriteString(buf, (const char *)cur->name); |
| xmlOutputBufferWriteString(buf, ";"); |
| return; |
| } |
| if (cur->type == HTML_PRESERVE_NODE) { |
| if (cur->content != NULL) { |
| xmlOutputBufferWriteString(buf, (const char *)cur->content); |
| } |
| return; |
| } |
| |
| /* |
| * Get specific HTML info for that node. |
| */ |
| if (cur->ns == NULL) |
| info = htmlTagLookup(cur->name); |
| else |
| info = NULL; |
| |
| xmlOutputBufferWriteString(buf, "<"); |
| if ((cur->ns != NULL) && (cur->ns->prefix != NULL)) { |
| xmlOutputBufferWriteString(buf, (const char *)cur->ns->prefix); |
| xmlOutputBufferWriteString(buf, ":"); |
| } |
| xmlOutputBufferWriteString(buf, (const char *)cur->name); |
| if (cur->nsDef) |
| xmlNsListDumpOutput(buf, cur->nsDef); |
| if (cur->properties != NULL) |
| htmlAttrListDumpOutput(buf, doc, cur->properties, encoding); |
| |
| if ((info != NULL) && (info->empty)) { |
| xmlOutputBufferWriteString(buf, ">"); |
| if ((format) && (!info->isinline) && (cur->next != NULL)) { |
| if ((cur->next->type != HTML_TEXT_NODE) && |
| (cur->next->type != HTML_ENTITY_REF_NODE) && |
| (cur->parent != NULL) && |
| (cur->parent->name != NULL) && |
| (cur->parent->name[0] != 'p')) /* p, pre, param */ |
| xmlOutputBufferWriteString(buf, "\n"); |
| } |
| return; |
| } |
| if (((cur->type == XML_ELEMENT_NODE) || (cur->content == NULL)) && |
| (cur->children == NULL)) { |
| if ((info != NULL) && (info->saveEndTag != 0) && |
| (xmlStrcmp(BAD_CAST info->name, BAD_CAST "html")) && |
| (xmlStrcmp(BAD_CAST info->name, BAD_CAST "body"))) { |
| xmlOutputBufferWriteString(buf, ">"); |
| } else { |
| xmlOutputBufferWriteString(buf, "></"); |
| if ((cur->ns != NULL) && (cur->ns->prefix != NULL)) { |
| xmlOutputBufferWriteString(buf, (const char *)cur->ns->prefix); |
| xmlOutputBufferWriteString(buf, ":"); |
| } |
| xmlOutputBufferWriteString(buf, (const char *)cur->name); |
| xmlOutputBufferWriteString(buf, ">"); |
| } |
| if ((format) && (cur->next != NULL) && |
| (info != NULL) && (!info->isinline)) { |
| if ((cur->next->type != HTML_TEXT_NODE) && |
| (cur->next->type != HTML_ENTITY_REF_NODE) && |
| (cur->parent != NULL) && |
| (cur->parent->name != NULL) && |
| (cur->parent->name[0] != 'p')) /* p, pre, param */ |
| xmlOutputBufferWriteString(buf, "\n"); |
| } |
| return; |
| } |
| xmlOutputBufferWriteString(buf, ">"); |
| if ((cur->type != XML_ELEMENT_NODE) && |
| (cur->content != NULL)) { |
| /* |
| * Uses the OutputBuffer property to automatically convert |
| * invalids to charrefs |
| */ |
| |
| xmlOutputBufferWriteString(buf, (const char *) cur->content); |
| } |
| if (cur->children != NULL) { |
| if ((format) && (info != NULL) && (!info->isinline) && |
| (cur->children->type != HTML_TEXT_NODE) && |
| (cur->children->type != HTML_ENTITY_REF_NODE) && |
| (cur->children != cur->last) && |
| (cur->name != NULL) && |
| (cur->name[0] != 'p')) /* p, pre, param */ |
| xmlOutputBufferWriteString(buf, "\n"); |
| htmlNodeListDumpOutput(buf, doc, cur->children, encoding, format); |
| if ((format) && (info != NULL) && (!info->isinline) && |
| (cur->last->type != HTML_TEXT_NODE) && |
| (cur->last->type != HTML_ENTITY_REF_NODE) && |
| (cur->children != cur->last) && |
| (cur->name != NULL) && |
| (cur->name[0] != 'p')) /* p, pre, param */ |
| xmlOutputBufferWriteString(buf, "\n"); |
| } |
| xmlOutputBufferWriteString(buf, "</"); |
| if ((cur->ns != NULL) && (cur->ns->prefix != NULL)) { |
| xmlOutputBufferWriteString(buf, (const char *)cur->ns->prefix); |
| xmlOutputBufferWriteString(buf, ":"); |
| } |
| xmlOutputBufferWriteString(buf, (const char *)cur->name); |
| xmlOutputBufferWriteString(buf, ">"); |
| if ((format) && (info != NULL) && (!info->isinline) && |
| (cur->next != NULL)) { |
| if ((cur->next->type != HTML_TEXT_NODE) && |
| (cur->next->type != HTML_ENTITY_REF_NODE) && |
| (cur->parent != NULL) && |
| (cur->parent->name != NULL) && |
| (cur->parent->name[0] != 'p')) /* p, pre, param */ |
| xmlOutputBufferWriteString(buf, "\n"); |
| } |
| } |
| |
| /** |
| * htmlNodeDumpOutput: |
| * @buf: the HTML buffer output |
| * @doc: the document |
| * @cur: the current node |
| * @encoding: the encoding string |
| * |
| * Dump an HTML node, recursive behaviour,children are printed too, |
| * and formatting returns/spaces are added. |
| */ |
| void |
| htmlNodeDumpOutput(xmlOutputBufferPtr buf, xmlDocPtr doc, |
| xmlNodePtr cur, const char *encoding) { |
| htmlNodeDumpFormatOutput(buf, doc, cur, encoding, 1); |
| } |
| |
| /** |
| * htmlDocContentDumpFormatOutput: |
| * @buf: the HTML buffer output |
| * @cur: the document |
| * @encoding: the encoding string |
| * @format: should formatting spaces been added |
| * |
| * Dump an HTML document. |
| */ |
| void |
| htmlDocContentDumpFormatOutput(xmlOutputBufferPtr buf, xmlDocPtr cur, |
| const char *encoding, int format) { |
| int type; |
| |
| xmlInitParser(); |
| |
| if ((buf == NULL) || (cur == NULL)) |
| return; |
| |
| /* |
| * force to output the stuff as HTML, especially for entities |
| */ |
| type = cur->type; |
| cur->type = XML_HTML_DOCUMENT_NODE; |
| if (cur->intSubset != NULL) { |
| htmlDtdDumpOutput(buf, cur, NULL); |
| } |
| if (cur->children != NULL) { |
| htmlNodeListDumpOutput(buf, cur, cur->children, encoding, format); |
| } |
| xmlOutputBufferWriteString(buf, "\n"); |
| cur->type = (xmlElementType) type; |
| } |
| |
| /** |
| * htmlDocContentDumpOutput: |
| * @buf: the HTML buffer output |
| * @cur: the document |
| * @encoding: the encoding string |
| * |
| * Dump an HTML document. Formating return/spaces are added. |
| */ |
| void |
| htmlDocContentDumpOutput(xmlOutputBufferPtr buf, xmlDocPtr cur, |
| const char *encoding) { |
| htmlDocContentDumpFormatOutput(buf, cur, encoding, 1); |
| } |
| |
| /************************************************************************ |
| * * |
| * Saving functions front-ends * |
| * * |
| ************************************************************************/ |
| |
| /** |
| * htmlDocDump: |
| * @f: the FILE* |
| * @cur: the document |
| * |
| * Dump an HTML document to an open FILE. |
| * |
| * returns: the number of byte written or -1 in case of failure. |
| */ |
| int |
| htmlDocDump(FILE *f, xmlDocPtr cur) { |
| xmlOutputBufferPtr buf; |
| xmlCharEncodingHandlerPtr handler = NULL; |
| const char *encoding; |
| int ret; |
| |
| xmlInitParser(); |
| |
| if ((cur == NULL) || (f == NULL)) { |
| return(-1); |
| } |
| |
| encoding = (const char *) htmlGetMetaEncoding(cur); |
| |
| if (encoding != NULL) { |
| xmlCharEncoding enc; |
| |
| enc = xmlParseCharEncoding(encoding); |
| if (enc != cur->charset) { |
| if (cur->charset != XML_CHAR_ENCODING_UTF8) { |
| /* |
| * Not supported yet |
| */ |
| return(-1); |
| } |
| |
| handler = xmlFindCharEncodingHandler(encoding); |
| if (handler == NULL) |
| htmlSaveErr(XML_SAVE_UNKNOWN_ENCODING, NULL, encoding); |
| } else { |
| handler = xmlFindCharEncodingHandler(encoding); |
| } |
| } |
| |
| /* |
| * Fallback to HTML or ASCII when the encoding is unspecified |
| */ |
| if (handler == NULL) |
| handler = xmlFindCharEncodingHandler("HTML"); |
| if (handler == NULL) |
| handler = xmlFindCharEncodingHandler("ascii"); |
| |
| buf = xmlOutputBufferCreateFile(f, handler); |
| if (buf == NULL) return(-1); |
| htmlDocContentDumpOutput(buf, cur, NULL); |
| |
| ret = xmlOutputBufferClose(buf); |
| return(ret); |
| } |
| |
| /** |
| * htmlSaveFile: |
| * @filename: the filename (or URL) |
| * @cur: the document |
| * |
| * Dump an HTML document to a file. If @filename is "-" the stdout file is |
| * used. |
| * returns: the number of byte written or -1 in case of failure. |
| */ |
| int |
| htmlSaveFile(const char *filename, xmlDocPtr cur) { |
| xmlOutputBufferPtr buf; |
| xmlCharEncodingHandlerPtr handler = NULL; |
| const char *encoding; |
| int ret; |
| |
| if ((cur == NULL) || (filename == NULL)) |
| return(-1); |
| |
| xmlInitParser(); |
| |
| encoding = (const char *) htmlGetMetaEncoding(cur); |
| |
| if (encoding != NULL) { |
| xmlCharEncoding enc; |
| |
| enc = xmlParseCharEncoding(encoding); |
| if (enc != cur->charset) { |
| if (cur->charset != XML_CHAR_ENCODING_UTF8) { |
| /* |
| * Not supported yet |
| */ |
| return(-1); |
| } |
| |
| handler = xmlFindCharEncodingHandler(encoding); |
| if (handler == NULL) |
| htmlSaveErr(XML_SAVE_UNKNOWN_ENCODING, NULL, encoding); |
| } |
| } |
| |
| /* |
| * Fallback to HTML or ASCII when the encoding is unspecified |
| */ |
| if (handler == NULL) |
| handler = xmlFindCharEncodingHandler("HTML"); |
| if (handler == NULL) |
| handler = xmlFindCharEncodingHandler("ascii"); |
| |
| /* |
| * save the content to a temp buffer. |
| */ |
| buf = xmlOutputBufferCreateFilename(filename, handler, cur->compression); |
| if (buf == NULL) return(0); |
| |
| htmlDocContentDumpOutput(buf, cur, NULL); |
| |
| ret = xmlOutputBufferClose(buf); |
| return(ret); |
| } |
| |
| /** |
| * htmlSaveFileFormat: |
| * @filename: the filename |
| * @cur: the document |
| * @format: should formatting spaces been added |
| * @encoding: the document encoding |
| * |
| * Dump an HTML document to a file using a given encoding. |
| * |
| * returns: the number of byte written or -1 in case of failure. |
| */ |
| int |
| htmlSaveFileFormat(const char *filename, xmlDocPtr cur, |
| const char *encoding, int format) { |
| xmlOutputBufferPtr buf; |
| xmlCharEncodingHandlerPtr handler = NULL; |
| int ret; |
| |
| if ((cur == NULL) || (filename == NULL)) |
| return(-1); |
| |
| xmlInitParser(); |
| |
| if (encoding != NULL) { |
| xmlCharEncoding enc; |
| |
| enc = xmlParseCharEncoding(encoding); |
| if (enc != cur->charset) { |
| if (cur->charset != XML_CHAR_ENCODING_UTF8) { |
| /* |
| * Not supported yet |
| */ |
| return(-1); |
| } |
| |
| handler = xmlFindCharEncodingHandler(encoding); |
| if (handler == NULL) |
| htmlSaveErr(XML_SAVE_UNKNOWN_ENCODING, NULL, encoding); |
| } |
| htmlSetMetaEncoding(cur, (const xmlChar *) encoding); |
| } else { |
| htmlSetMetaEncoding(cur, (const xmlChar *) "UTF-8"); |
| } |
| |
| /* |
| * Fallback to HTML or ASCII when the encoding is unspecified |
| */ |
| if (handler == NULL) |
| handler = xmlFindCharEncodingHandler("HTML"); |
| if (handler == NULL) |
| handler = xmlFindCharEncodingHandler("ascii"); |
| |
| /* |
| * save the content to a temp buffer. |
| */ |
| buf = xmlOutputBufferCreateFilename(filename, handler, 0); |
| if (buf == NULL) return(0); |
| |
| htmlDocContentDumpFormatOutput(buf, cur, encoding, format); |
| |
| ret = xmlOutputBufferClose(buf); |
| return(ret); |
| } |
| |
| /** |
| * htmlSaveFileEnc: |
| * @filename: the filename |
| * @cur: the document |
| * @encoding: the document encoding |
| * |
| * Dump an HTML document to a file using a given encoding |
| * and formatting returns/spaces are added. |
| * |
| * returns: the number of byte written or -1 in case of failure. |
| */ |
| int |
| htmlSaveFileEnc(const char *filename, xmlDocPtr cur, const char *encoding) { |
| return(htmlSaveFileFormat(filename, cur, encoding, 1)); |
| } |
| |
| #endif /* LIBXML_OUTPUT_ENABLED */ |
| |
| #define bottom_HTMLtree |
| #include "elfgcchack.h" |
| #endif /* LIBXML_HTML_ENABLED */ |