1201 lines
33 KiB
C
1201 lines
33 KiB
C
/*
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* HTMLtree.c : implementation of access function for an HTML tree.
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*
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* See Copyright for the status of this software.
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*
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* daniel@veillard.com
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*/
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#define IN_LIBXML
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#include "libxml.h"
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#ifdef LIBXML_HTML_ENABLED
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#include <string.h> /* for memset() only ! */
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#ifdef HAVE_CTYPE_H
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#include <ctype.h>
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#include <libxml/xmlmemory.h>
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#include <libxml/HTMLparser.h>
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#include <libxml/HTMLtree.h>
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#include <libxml/entities.h>
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#include <libxml/valid.h>
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#include <libxml/xmlerror.h>
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#include <libxml/parserInternals.h>
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#include <libxml/globals.h>
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#include <libxml/uri.h>
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#include "buf.h"
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/************************************************************************
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* *
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* Getting/Setting encoding meta tags *
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* *
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************************************************************************/
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/**
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* htmlGetMetaEncoding:
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* @doc: the document
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*
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* Encoding definition lookup in the Meta tags
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*
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* Returns the current encoding as flagged in the HTML source
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*/
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const xmlChar *
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htmlGetMetaEncoding(htmlDocPtr doc) {
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htmlNodePtr cur;
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const xmlChar *content;
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const xmlChar *encoding;
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if (doc == NULL)
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return(NULL);
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cur = doc->children;
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/*
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* Search the html
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*/
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while (cur != NULL) {
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if ((cur->type == XML_ELEMENT_NODE) && (cur->name != NULL)) {
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if (xmlStrEqual(cur->name, BAD_CAST"html"))
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break;
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if (xmlStrEqual(cur->name, BAD_CAST"head"))
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goto found_head;
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if (xmlStrEqual(cur->name, BAD_CAST"meta"))
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goto found_meta;
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}
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cur = cur->next;
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}
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if (cur == NULL)
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return(NULL);
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cur = cur->children;
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/*
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* Search the head
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*/
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while (cur != NULL) {
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if ((cur->type == XML_ELEMENT_NODE) && (cur->name != NULL)) {
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if (xmlStrEqual(cur->name, BAD_CAST"head"))
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break;
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if (xmlStrEqual(cur->name, BAD_CAST"meta"))
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goto found_meta;
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}
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cur = cur->next;
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}
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if (cur == NULL)
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return(NULL);
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found_head:
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cur = cur->children;
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/*
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* Search the meta elements
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*/
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found_meta:
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while (cur != NULL) {
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if ((cur->type == XML_ELEMENT_NODE) && (cur->name != NULL)) {
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if (xmlStrEqual(cur->name, BAD_CAST"meta")) {
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xmlAttrPtr attr = cur->properties;
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int http;
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const xmlChar *value;
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content = NULL;
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http = 0;
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while (attr != NULL) {
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if ((attr->children != NULL) &&
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(attr->children->type == XML_TEXT_NODE) &&
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(attr->children->next == NULL)) {
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value = attr->children->content;
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if ((!xmlStrcasecmp(attr->name, BAD_CAST"http-equiv"))
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&& (!xmlStrcasecmp(value, BAD_CAST"Content-Type")))
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http = 1;
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else if ((value != NULL)
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&& (!xmlStrcasecmp(attr->name, BAD_CAST"content")))
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content = value;
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if ((http != 0) && (content != NULL))
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goto found_content;
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}
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attr = attr->next;
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}
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}
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}
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cur = cur->next;
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}
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return(NULL);
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found_content:
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encoding = xmlStrstr(content, BAD_CAST"charset=");
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if (encoding == NULL)
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encoding = xmlStrstr(content, BAD_CAST"Charset=");
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if (encoding == NULL)
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encoding = xmlStrstr(content, BAD_CAST"CHARSET=");
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if (encoding != NULL) {
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encoding += 8;
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} else {
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encoding = xmlStrstr(content, BAD_CAST"charset =");
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if (encoding == NULL)
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encoding = xmlStrstr(content, BAD_CAST"Charset =");
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if (encoding == NULL)
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encoding = xmlStrstr(content, BAD_CAST"CHARSET =");
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if (encoding != NULL)
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encoding += 9;
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}
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if (encoding != NULL) {
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while ((*encoding == ' ') || (*encoding == '\t')) encoding++;
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}
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return(encoding);
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}
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/**
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* htmlSetMetaEncoding:
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* @doc: the document
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* @encoding: the encoding string
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*
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* Sets the current encoding in the Meta tags
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* NOTE: this will not change the document content encoding, just
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* the META flag associated.
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*
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* Returns 0 in case of success and -1 in case of error
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*/
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int
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htmlSetMetaEncoding(htmlDocPtr doc, const xmlChar *encoding) {
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htmlNodePtr cur, meta = NULL, head = NULL;
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const xmlChar *content = NULL;
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char newcontent[100];
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newcontent[0] = 0;
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if (doc == NULL)
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return(-1);
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/* html isn't a real encoding it's just libxml2 way to get entities */
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if (!xmlStrcasecmp(encoding, BAD_CAST "html"))
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return(-1);
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if (encoding != NULL) {
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snprintf(newcontent, sizeof(newcontent), "text/html; charset=%s",
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(char *)encoding);
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newcontent[sizeof(newcontent) - 1] = 0;
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}
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cur = doc->children;
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/*
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* Search the html
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*/
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while (cur != NULL) {
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if ((cur->type == XML_ELEMENT_NODE) && (cur->name != NULL)) {
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if (xmlStrcasecmp(cur->name, BAD_CAST"html") == 0)
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break;
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if (xmlStrcasecmp(cur->name, BAD_CAST"head") == 0)
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goto found_head;
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if (xmlStrcasecmp(cur->name, BAD_CAST"meta") == 0)
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goto found_meta;
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}
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cur = cur->next;
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}
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if (cur == NULL)
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return(-1);
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cur = cur->children;
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/*
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* Search the head
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*/
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while (cur != NULL) {
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if ((cur->type == XML_ELEMENT_NODE) && (cur->name != NULL)) {
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if (xmlStrcasecmp(cur->name, BAD_CAST"head") == 0)
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break;
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if (xmlStrcasecmp(cur->name, BAD_CAST"meta") == 0) {
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head = cur->parent;
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goto found_meta;
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}
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}
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cur = cur->next;
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}
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if (cur == NULL)
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return(-1);
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found_head:
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head = cur;
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if (cur->children == NULL)
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goto create;
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cur = cur->children;
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found_meta:
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/*
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* Search and update all the remaining the meta elements carrying
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* encoding information
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*/
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while (cur != NULL) {
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if ((cur->type == XML_ELEMENT_NODE) && (cur->name != NULL)) {
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if (xmlStrcasecmp(cur->name, BAD_CAST"meta") == 0) {
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xmlAttrPtr attr = cur->properties;
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int http;
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const xmlChar *value;
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content = NULL;
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http = 0;
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while (attr != NULL) {
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if ((attr->children != NULL) &&
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(attr->children->type == XML_TEXT_NODE) &&
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(attr->children->next == NULL)) {
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value = attr->children->content;
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if ((!xmlStrcasecmp(attr->name, BAD_CAST"http-equiv"))
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&& (!xmlStrcasecmp(value, BAD_CAST"Content-Type")))
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http = 1;
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else
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{
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if ((value != NULL) &&
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(!xmlStrcasecmp(attr->name, BAD_CAST"content")))
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content = value;
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}
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if ((http != 0) && (content != NULL))
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break;
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}
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attr = attr->next;
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}
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if ((http != 0) && (content != NULL)) {
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meta = cur;
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break;
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}
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}
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}
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cur = cur->next;
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}
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create:
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if (meta == NULL) {
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if ((encoding != NULL) && (head != NULL)) {
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/*
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* Create a new Meta element with the right attributes
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*/
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meta = xmlNewDocNode(doc, NULL, BAD_CAST"meta", NULL);
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if (head->children == NULL)
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xmlAddChild(head, meta);
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else
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xmlAddPrevSibling(head->children, meta);
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xmlNewProp(meta, BAD_CAST"http-equiv", BAD_CAST"Content-Type");
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xmlNewProp(meta, BAD_CAST"content", BAD_CAST newcontent);
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}
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} else {
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/* remove the meta tag if NULL is passed */
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if (encoding == NULL) {
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xmlUnlinkNode(meta);
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xmlFreeNode(meta);
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}
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/* change the document only if there is a real encoding change */
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else if (xmlStrcasestr(content, encoding) == NULL) {
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xmlSetProp(meta, BAD_CAST"content", BAD_CAST newcontent);
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}
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}
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return(0);
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}
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/**
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* booleanHTMLAttrs:
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*
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* These are the HTML attributes which will be output
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* in minimized form, i.e. <option selected="selected"> will be
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* output as <option selected>, as per XSLT 1.0 16.2 "HTML Output Method"
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*
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*/
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static const char* htmlBooleanAttrs[] = {
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"checked", "compact", "declare", "defer", "disabled", "ismap",
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"multiple", "nohref", "noresize", "noshade", "nowrap", "readonly",
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"selected", NULL
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};
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/**
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* htmlIsBooleanAttr:
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* @name: the name of the attribute to check
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*
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* Determine if a given attribute is a boolean attribute.
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*
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* returns: false if the attribute is not boolean, true otherwise.
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*/
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int
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htmlIsBooleanAttr(const xmlChar *name)
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{
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int i = 0;
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while (htmlBooleanAttrs[i] != NULL) {
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if (xmlStrcasecmp((const xmlChar *)htmlBooleanAttrs[i], name) == 0)
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return 1;
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i++;
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}
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return 0;
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}
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#ifdef LIBXML_OUTPUT_ENABLED
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/*
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* private routine exported from xmlIO.c
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*/
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xmlOutputBufferPtr
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xmlAllocOutputBufferInternal(xmlCharEncodingHandlerPtr encoder);
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/************************************************************************
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* *
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* Output error handlers *
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* *
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************************************************************************/
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/**
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* htmlSaveErrMemory:
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* @extra: extra information
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*
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* Handle an out of memory condition
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*/
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static void
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htmlSaveErrMemory(const char *extra)
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{
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__xmlSimpleError(XML_FROM_OUTPUT, XML_ERR_NO_MEMORY, NULL, NULL, extra);
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}
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/**
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* htmlSaveErr:
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* @code: the error number
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* @node: the location of the error.
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* @extra: extra information
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*
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* Handle an out of memory condition
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*/
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static void
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htmlSaveErr(int code, xmlNodePtr node, const char *extra)
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{
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const char *msg = NULL;
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switch(code) {
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case XML_SAVE_NOT_UTF8:
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msg = "string is not in UTF-8\n";
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break;
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case XML_SAVE_CHAR_INVALID:
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msg = "invalid character value\n";
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break;
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case XML_SAVE_UNKNOWN_ENCODING:
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msg = "unknown encoding %s\n";
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break;
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case XML_SAVE_NO_DOCTYPE:
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msg = "HTML has no DOCTYPE\n";
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break;
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default:
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msg = "unexpected error number\n";
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}
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__xmlSimpleError(XML_FROM_OUTPUT, code, node, msg, extra);
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}
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/************************************************************************
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* *
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* Dumping HTML tree content to a simple buffer *
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* *
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************************************************************************/
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/**
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* htmlBufNodeDumpFormat:
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* @buf: the xmlBufPtr output
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* @doc: the document
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* @cur: the current node
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* @format: should formatting spaces been added
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*
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* Dump an HTML node, recursive behaviour,children are printed too.
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*
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* Returns the number of byte written or -1 in case of error
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*/
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static size_t
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htmlBufNodeDumpFormat(xmlBufPtr buf, xmlDocPtr doc, xmlNodePtr cur,
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int format) {
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size_t use;
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int ret;
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xmlOutputBufferPtr outbuf;
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if (cur == NULL) {
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return (-1);
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}
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if (buf == NULL) {
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return (-1);
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}
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outbuf = (xmlOutputBufferPtr) xmlMalloc(sizeof(xmlOutputBuffer));
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if (outbuf == NULL) {
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htmlSaveErrMemory("allocating HTML output buffer");
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return (-1);
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}
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memset(outbuf, 0, (size_t) sizeof(xmlOutputBuffer));
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outbuf->buffer = buf;
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outbuf->encoder = NULL;
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outbuf->writecallback = NULL;
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outbuf->closecallback = NULL;
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outbuf->context = NULL;
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outbuf->written = 0;
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use = xmlBufUse(buf);
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htmlNodeDumpFormatOutput(outbuf, doc, cur, NULL, format);
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xmlFree(outbuf);
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ret = xmlBufUse(buf) - use;
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return (ret);
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}
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/**
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* htmlNodeDump:
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* @buf: the HTML buffer output
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* @doc: the document
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* @cur: the current node
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*
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* Dump an HTML node, recursive behaviour,children are printed too,
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* and formatting returns are added.
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*
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* Returns the number of byte written or -1 in case of error
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*/
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int
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htmlNodeDump(xmlBufferPtr buf, xmlDocPtr doc, xmlNodePtr cur) {
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xmlBufPtr buffer;
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size_t ret;
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if ((buf == NULL) || (cur == NULL))
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return(-1);
|
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|
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xmlInitParser();
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buffer = xmlBufFromBuffer(buf);
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if (buffer == NULL)
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return(-1);
|
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|
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ret = htmlBufNodeDumpFormat(buffer, doc, cur, 1);
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|
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xmlBufBackToBuffer(buffer);
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|
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if (ret > INT_MAX)
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return(-1);
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return((int) ret);
|
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}
|
|
|
|
/**
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|
* htmlNodeDumpFileFormat:
|
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* @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
|
|
*
|
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* returns: the number of byte written or -1 in case of failure.
|
|
*/
|
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int
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htmlNodeDumpFileFormat(FILE *out, xmlDocPtr doc,
|
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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);
|
|
}
|
|
} else {
|
|
/*
|
|
* 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, NULL, 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 != XML_CHAR_ENCODING_UTF8) {
|
|
handler = xmlFindCharEncodingHandler(encoding);
|
|
if (handler == NULL)
|
|
htmlSaveErr(XML_SAVE_UNKNOWN_ENCODING, NULL, encoding);
|
|
|
|
}
|
|
} else {
|
|
/*
|
|
* 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 &&
|
|
xmlStrcmp(cur->SystemID, BAD_CAST "about:legacy-compat")) {
|
|
xmlOutputBufferWriteString(buf, " SYSTEM ");
|
|
xmlBufWriteQuotedString(buf->buffer, cur->SystemID);
|
|
}
|
|
xmlOutputBufferWriteString(buf, ">\n");
|
|
}
|
|
|
|
/**
|
|
* htmlAttrDumpOutput:
|
|
* @buf: the HTML buffer output
|
|
* @doc: the document
|
|
* @cur: the attribute pointer
|
|
*
|
|
* Dump an HTML attribute
|
|
*/
|
|
static void
|
|
htmlAttrDumpOutput(xmlOutputBufferPtr buf, xmlDocPtr doc, xmlAttrPtr cur) {
|
|
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 *escaped;
|
|
xmlChar *tmp = value;
|
|
|
|
while (IS_BLANK_CH(*tmp)) tmp++;
|
|
|
|
/*
|
|
* the < and > have already been escaped at the entity level
|
|
* And doing so here breaks server side includes
|
|
*/
|
|
escaped = xmlURIEscapeStr(tmp, BAD_CAST"@/:=?;#%&,+<>");
|
|
if (escaped != NULL) {
|
|
xmlBufWriteQuotedString(buf->buffer, escaped);
|
|
xmlFree(escaped);
|
|
} else {
|
|
xmlBufWriteQuotedString(buf->buffer, value);
|
|
}
|
|
} else {
|
|
xmlBufWriteQuotedString(buf->buffer, value);
|
|
}
|
|
xmlFree(value);
|
|
} else {
|
|
xmlOutputBufferWriteString(buf, "=\"\"");
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* htmlNodeDumpFormatOutput:
|
|
* @buf: the HTML buffer output
|
|
* @doc: the document
|
|
* @cur: the current node
|
|
* @encoding: the encoding string (unused)
|
|
* @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 ATTRIBUTE_UNUSED,
|
|
int format) {
|
|
xmlNodePtr root, parent;
|
|
xmlAttrPtr attr;
|
|
const htmlElemDesc * info;
|
|
|
|
xmlInitParser();
|
|
|
|
if ((cur == NULL) || (buf == NULL)) {
|
|
return;
|
|
}
|
|
|
|
root = cur;
|
|
parent = cur->parent;
|
|
while (1) {
|
|
switch (cur->type) {
|
|
case XML_HTML_DOCUMENT_NODE:
|
|
case XML_DOCUMENT_NODE:
|
|
if (((xmlDocPtr) cur)->intSubset != NULL) {
|
|
htmlDtdDumpOutput(buf, (xmlDocPtr) cur, NULL);
|
|
}
|
|
if (cur->children != NULL) {
|
|
/* Always validate cur->parent when descending. */
|
|
if (cur->parent == parent) {
|
|
parent = cur;
|
|
cur = cur->children;
|
|
continue;
|
|
}
|
|
} else {
|
|
xmlOutputBufferWriteString(buf, "\n");
|
|
}
|
|
break;
|
|
|
|
case XML_ELEMENT_NODE:
|
|
/*
|
|
* Some users like lxml are known to pass nodes with a corrupted
|
|
* tree structure. Fall back to a recursive call to handle this
|
|
* case.
|
|
*/
|
|
if ((cur->parent != parent) && (cur->children != NULL)) {
|
|
htmlNodeDumpFormatOutput(buf, doc, cur, encoding, format);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* 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);
|
|
attr = cur->properties;
|
|
while (attr != NULL) {
|
|
htmlAttrDumpOutput(buf, doc, attr);
|
|
attr = attr->next;
|
|
}
|
|
|
|
if ((info != NULL) && (info->empty)) {
|
|
xmlOutputBufferWriteString(buf, ">");
|
|
} else if (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, ">");
|
|
}
|
|
} else {
|
|
xmlOutputBufferWriteString(buf, ">");
|
|
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");
|
|
parent = cur;
|
|
cur = cur->children;
|
|
continue;
|
|
}
|
|
|
|
if ((format) && (cur->next != NULL) &&
|
|
(info != NULL) && (!info->isinline)) {
|
|
if ((cur->next->type != HTML_TEXT_NODE) &&
|
|
(cur->next->type != HTML_ENTITY_REF_NODE) &&
|
|
(parent != NULL) &&
|
|
(parent->name != NULL) &&
|
|
(parent->name[0] != 'p')) /* p, pre, param */
|
|
xmlOutputBufferWriteString(buf, "\n");
|
|
}
|
|
|
|
break;
|
|
|
|
case XML_ATTRIBUTE_NODE:
|
|
htmlAttrDumpOutput(buf, doc, (xmlAttrPtr) cur);
|
|
break;
|
|
|
|
case HTML_TEXT_NODE:
|
|
if (cur->content == NULL)
|
|
break;
|
|
if (((cur->name == (const xmlChar *)xmlStringText) ||
|
|
(cur->name != (const xmlChar *)xmlStringTextNoenc)) &&
|
|
((parent == NULL) ||
|
|
((xmlStrcasecmp(parent->name, BAD_CAST "script")) &&
|
|
(xmlStrcasecmp(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);
|
|
}
|
|
break;
|
|
|
|
case HTML_COMMENT_NODE:
|
|
if (cur->content != NULL) {
|
|
xmlOutputBufferWriteString(buf, "<!--");
|
|
xmlOutputBufferWriteString(buf, (const char *)cur->content);
|
|
xmlOutputBufferWriteString(buf, "-->");
|
|
}
|
|
break;
|
|
|
|
case HTML_PI_NODE:
|
|
if (cur->name != NULL) {
|
|
xmlOutputBufferWriteString(buf, "<?");
|
|
xmlOutputBufferWriteString(buf, (const char *)cur->name);
|
|
if (cur->content != NULL) {
|
|
xmlOutputBufferWriteString(buf, " ");
|
|
xmlOutputBufferWriteString(buf,
|
|
(const char *)cur->content);
|
|
}
|
|
xmlOutputBufferWriteString(buf, ">");
|
|
}
|
|
break;
|
|
|
|
case HTML_ENTITY_REF_NODE:
|
|
xmlOutputBufferWriteString(buf, "&");
|
|
xmlOutputBufferWriteString(buf, (const char *)cur->name);
|
|
xmlOutputBufferWriteString(buf, ";");
|
|
break;
|
|
|
|
case HTML_PRESERVE_NODE:
|
|
if (cur->content != NULL) {
|
|
xmlOutputBufferWriteString(buf, (const char *)cur->content);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
while (1) {
|
|
if (cur == root)
|
|
return;
|
|
if (cur->next != NULL) {
|
|
cur = cur->next;
|
|
break;
|
|
}
|
|
|
|
cur = parent;
|
|
/* cur->parent was validated when descending. */
|
|
parent = cur->parent;
|
|
|
|
if ((cur->type == XML_HTML_DOCUMENT_NODE) ||
|
|
(cur->type == XML_DOCUMENT_NODE)) {
|
|
xmlOutputBufferWriteString(buf, "\n");
|
|
} else {
|
|
if ((format) && (cur->ns == NULL))
|
|
info = htmlTagLookup(cur->name);
|
|
else
|
|
info = NULL;
|
|
|
|
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) &&
|
|
(parent != NULL) &&
|
|
(parent->name != NULL) &&
|
|
(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 (unused)
|
|
*
|
|
* 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 ATTRIBUTE_UNUSED) {
|
|
htmlNodeDumpFormatOutput(buf, doc, cur, NULL, 1);
|
|
}
|
|
|
|
/**
|
|
* htmlDocContentDumpFormatOutput:
|
|
* @buf: the HTML buffer output
|
|
* @cur: the document
|
|
* @encoding: the encoding string (unused)
|
|
* @format: should formatting spaces been added
|
|
*
|
|
* Dump an HTML document.
|
|
*/
|
|
void
|
|
htmlDocContentDumpFormatOutput(xmlOutputBufferPtr buf, xmlDocPtr cur,
|
|
const char *encoding ATTRIBUTE_UNUSED,
|
|
int format) {
|
|
htmlNodeDumpFormatOutput(buf, cur, (xmlNodePtr) cur, NULL, format);
|
|
}
|
|
|
|
/**
|
|
* htmlDocContentDumpOutput:
|
|
* @buf: the HTML buffer output
|
|
* @cur: the document
|
|
* @encoding: the encoding string (unused)
|
|
*
|
|
* Dump an HTML document. Formatting return/spaces are added.
|
|
*/
|
|
void
|
|
htmlDocContentDumpOutput(xmlOutputBufferPtr buf, xmlDocPtr cur,
|
|
const char *encoding ATTRIBUTE_UNUSED) {
|
|
htmlNodeDumpFormatOutput(buf, cur, (xmlNodePtr) cur, NULL, 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 != XML_CHAR_ENCODING_UTF8) {
|
|
handler = xmlFindCharEncodingHandler(encoding);
|
|
if (handler == NULL)
|
|
htmlSaveErr(XML_SAVE_UNKNOWN_ENCODING, NULL, encoding);
|
|
}
|
|
} else {
|
|
/*
|
|
* 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 != XML_CHAR_ENCODING_UTF8) {
|
|
handler = xmlFindCharEncodingHandler(encoding);
|
|
if (handler == NULL)
|
|
htmlSaveErr(XML_SAVE_UNKNOWN_ENCODING, NULL, encoding);
|
|
}
|
|
} else {
|
|
/*
|
|
* 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 != XML_CHAR_ENCODING_UTF8) {
|
|
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 */
|