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3c01b1d81b
testThreads.c: far more testing, cleaning up bugs - *.c : make sure globals.h is always included. Daniel
1364 lines
35 KiB
C
1364 lines
35 KiB
C
/*
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* HTMLtree.c : implemetation 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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#include "libxml.h"
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#ifdef LIBXML_HTML_ENABLED
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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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/************************************************************************
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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->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->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->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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#ifndef XML_USE_BUFFER_CONTENT
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value = attr->children->content;
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#else
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value = xmlBufferContent(attr->children->content);
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#endif
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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;
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const xmlChar *content;
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char newcontent[100];
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if (doc == NULL)
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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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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->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->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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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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found_head:
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if (cur->children == NULL) {
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if (encoding == NULL)
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return(0);
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meta = xmlNewDocNode(doc, NULL, BAD_CAST"meta", NULL);
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xmlAddChild(cur, meta);
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xmlNewProp(meta, BAD_CAST"content", BAD_CAST newcontent);
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xmlNewProp(meta, BAD_CAST"http-equiv", BAD_CAST"Content-Type");
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return(0);
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}
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cur = cur->children;
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found_meta:
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if (encoding != NULL) {
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/*
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* Create a new Meta element with the right aatributes
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*/
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meta = xmlNewDocNode(doc, NULL, BAD_CAST"meta", NULL);
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xmlAddPrevSibling(cur, meta);
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xmlNewProp(meta, BAD_CAST"content", BAD_CAST newcontent);
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xmlNewProp(meta, BAD_CAST"http-equiv", BAD_CAST"Content-Type");
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}
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/*
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* Search and destroy all the remaining the meta elements carrying
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* encoding informations
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*/
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while (cur != NULL) {
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if (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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int same_charset;
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content = NULL;
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http = 0;
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same_charset = 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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#ifndef XML_USE_BUFFER_CONTENT
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value = attr->children->content;
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#else
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value = xmlBufferContent(attr->children->content);
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#endif
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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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else
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if ((!xmlStrcasecmp(attr->name, BAD_CAST"charset"))
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&& (!xmlStrcasecmp(value, encoding)))
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same_charset = 1;
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}
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if ((http != 0) && (content != NULL) && (same_charset != 0))
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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) && (same_charset != 0)) {
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meta = cur;
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cur = cur->next;
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xmlUnlinkNode(meta);
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xmlFreeNode(meta);
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continue;
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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(0);
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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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void htmlNodeDumpFormatOutput(xmlOutputBufferPtr buf, xmlDocPtr doc,
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xmlNodePtr cur, const char *encoding, int format);
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static void
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htmlDocContentDump(xmlBufferPtr buf, xmlDocPtr cur, int format);
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/**
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* htmlDtdDump:
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* @buf: the HTML buffer output
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* @doc: the document
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*
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* Dump the HTML document DTD, if any.
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*/
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static void
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htmlDtdDump(xmlBufferPtr buf, xmlDocPtr doc) {
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xmlDtdPtr cur = doc->intSubset;
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if (cur == NULL) {
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xmlGenericError(xmlGenericErrorContext,
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"htmlDtdDump : no internal subset\n");
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return;
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}
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xmlBufferWriteChar(buf, "<!DOCTYPE ");
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xmlBufferWriteCHAR(buf, cur->name);
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if (cur->ExternalID != NULL) {
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xmlBufferWriteChar(buf, " PUBLIC ");
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xmlBufferWriteQuotedString(buf, cur->ExternalID);
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if (cur->SystemID != NULL) {
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xmlBufferWriteChar(buf, " ");
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xmlBufferWriteQuotedString(buf, cur->SystemID);
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}
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} else if (cur->SystemID != NULL) {
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xmlBufferWriteChar(buf, " SYSTEM ");
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xmlBufferWriteQuotedString(buf, cur->SystemID);
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}
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xmlBufferWriteChar(buf, ">\n");
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}
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/**
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* htmlAttrDump:
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* @buf: the HTML buffer output
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* @doc: the document
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* @cur: the attribute pointer
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*
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* Dump an HTML attribute
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*/
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static void
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htmlAttrDump(xmlBufferPtr buf, xmlDocPtr doc, xmlAttrPtr cur) {
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xmlChar *value;
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/*
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* TODO: The html output method should not escape a & character
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* occurring in an attribute value immediately followed by
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* a { character (see Section B.7.1 of the HTML 4.0 Recommendation).
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*/
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if (cur == NULL) {
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xmlGenericError(xmlGenericErrorContext,
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"htmlAttrDump : property == NULL\n");
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return;
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}
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xmlBufferWriteChar(buf, " ");
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xmlBufferWriteCHAR(buf, cur->name);
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if (cur->children != NULL) {
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value = xmlNodeListGetString(doc, cur->children, 0);
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if (value) {
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xmlBufferWriteChar(buf, "=");
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xmlBufferWriteQuotedString(buf, value);
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xmlFree(value);
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} else {
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xmlBufferWriteChar(buf, "=\"\"");
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}
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}
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}
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/**
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* htmlAttrListDump:
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* @buf: the HTML buffer output
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* @doc: the document
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* @cur: the first attribute pointer
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*
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* Dump a list of HTML attributes
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*/
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static void
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htmlAttrListDump(xmlBufferPtr buf, xmlDocPtr doc, xmlAttrPtr cur, int format) {
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int i = 0;
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if (cur == NULL) {
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xmlGenericError(xmlGenericErrorContext,
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"htmlAttrListDump : property == NULL\n");
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return;
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}
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while (cur != NULL) {
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i++;
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if ((format) && (i >= 5)) {
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i = 0;
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xmlBufferWriteChar(buf, "\n");
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}
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htmlAttrDump(buf, doc, cur);
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cur = cur->next;
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}
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}
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static void
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htmlNodeDumpFormat(xmlBufferPtr buf, xmlDocPtr doc, xmlNodePtr cur, int format);
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/**
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* htmlNodeListDump:
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* @buf: the HTML buffer output
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* @doc: the document
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* @cur: the first node
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*
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* Dump an HTML node list, recursive behaviour,children are printed too.
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*/
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static void
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htmlNodeListDump(xmlBufferPtr buf, xmlDocPtr doc, xmlNodePtr cur, int format) {
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if (cur == NULL) {
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xmlGenericError(xmlGenericErrorContext,
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"htmlNodeListDump : node == NULL\n");
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return;
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}
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while (cur != NULL) {
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htmlNodeDumpFormat(buf, doc, cur, format);
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cur = cur->next;
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}
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}
|
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/**
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* htmlNodeDumpFormat:
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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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* @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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void
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htmlNodeDumpFormat(xmlBufferPtr buf, xmlDocPtr doc, xmlNodePtr cur,
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int format) {
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const htmlElemDesc * info;
|
|
|
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if (cur == NULL) {
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xmlGenericError(xmlGenericErrorContext,
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"htmlNodeDump : node == NULL\n");
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return;
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}
|
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/*
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* Special cases.
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*/
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if (cur->type == XML_DTD_NODE)
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return;
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if (cur->type == XML_HTML_DOCUMENT_NODE) {
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htmlDocContentDump(buf, (xmlDocPtr) cur, format);
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return;
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}
|
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if (cur->type == HTML_TEXT_NODE) {
|
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if (cur->content != NULL) {
|
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if (((cur->name == (const xmlChar *)xmlStringText) ||
|
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(cur->name != (const xmlChar *)xmlStringTextNoenc)) &&
|
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((cur->parent == NULL) ||
|
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(!xmlStrEqual(cur->parent->name, BAD_CAST "script")))) {
|
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xmlChar *buffer;
|
|
|
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#ifndef XML_USE_BUFFER_CONTENT
|
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buffer = xmlEncodeEntitiesReentrant(doc, cur->content);
|
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#else
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buffer = xmlEncodeEntitiesReentrant(doc,
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xmlBufferContent(cur->content));
|
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#endif
|
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if (buffer != NULL) {
|
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xmlBufferWriteCHAR(buf, buffer);
|
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xmlFree(buffer);
|
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}
|
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} else {
|
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xmlBufferWriteCHAR(buf, cur->content);
|
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}
|
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}
|
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return;
|
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}
|
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if (cur->type == HTML_COMMENT_NODE) {
|
|
if (cur->content != NULL) {
|
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xmlBufferWriteChar(buf, "<!--");
|
|
#ifndef XML_USE_BUFFER_CONTENT
|
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xmlBufferWriteCHAR(buf, cur->content);
|
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#else
|
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xmlBufferWriteCHAR(buf, xmlBufferContent(cur->content));
|
|
#endif
|
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xmlBufferWriteChar(buf, "-->");
|
|
}
|
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return;
|
|
}
|
|
if (cur->type == HTML_PI_NODE) {
|
|
if (cur->name == NULL)
|
|
return;
|
|
xmlBufferWriteChar(buf, "<?");
|
|
xmlBufferWriteCHAR(buf, cur->name);
|
|
if (cur->content != NULL) {
|
|
xmlBufferWriteChar(buf, " ");
|
|
#ifndef XML_USE_BUFFER_CONTENT
|
|
xmlBufferWriteCHAR(buf, cur->content);
|
|
#else
|
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xmlBufferWriteCHAR(buf, xmlBufferContent(cur->content));
|
|
#endif
|
|
}
|
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xmlBufferWriteChar(buf, ">");
|
|
return;
|
|
}
|
|
if (cur->type == HTML_ENTITY_REF_NODE) {
|
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xmlBufferWriteChar(buf, "&");
|
|
xmlBufferWriteCHAR(buf, cur->name);
|
|
xmlBufferWriteChar(buf, ";");
|
|
return;
|
|
}
|
|
if (cur->type == HTML_PRESERVE_NODE) {
|
|
if (cur->content != NULL) {
|
|
#ifndef XML_USE_BUFFER_CONTENT
|
|
xmlBufferWriteCHAR(buf, cur->content);
|
|
#else
|
|
xmlBufferWriteCHAR(buf, xmlBufferContent(cur->content));
|
|
#endif
|
|
}
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Get specific HTML info for taht node.
|
|
*/
|
|
info = htmlTagLookup(cur->name);
|
|
|
|
xmlBufferWriteChar(buf, "<");
|
|
xmlBufferWriteCHAR(buf, cur->name);
|
|
if (cur->properties != NULL)
|
|
htmlAttrListDump(buf, doc, cur->properties, format);
|
|
|
|
if ((info != NULL) && (info->empty)) {
|
|
xmlBufferWriteChar(buf, ">");
|
|
if ((format) && (info != NULL) && (!info->isinline) &&
|
|
(cur->next != NULL)) {
|
|
if ((cur->next->type != HTML_TEXT_NODE) &&
|
|
(cur->next->type != HTML_ENTITY_REF_NODE))
|
|
xmlBufferWriteChar(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"))) {
|
|
xmlBufferWriteChar(buf, ">");
|
|
} else {
|
|
xmlBufferWriteChar(buf, "></");
|
|
xmlBufferWriteCHAR(buf, cur->name);
|
|
xmlBufferWriteChar(buf, ">");
|
|
}
|
|
if ((format) && (info != NULL) && (!info->isinline) &&
|
|
(cur->next != NULL)) {
|
|
if ((cur->next->type != HTML_TEXT_NODE) &&
|
|
(cur->next->type != HTML_ENTITY_REF_NODE))
|
|
xmlBufferWriteChar(buf, "\n");
|
|
}
|
|
return;
|
|
}
|
|
xmlBufferWriteChar(buf, ">");
|
|
if ((cur->type != XML_ELEMENT_NODE) && (cur->content != NULL)) {
|
|
xmlChar *buffer;
|
|
|
|
#ifndef XML_USE_BUFFER_CONTENT
|
|
buffer = xmlEncodeEntitiesReentrant(doc, cur->content);
|
|
#else
|
|
buffer = xmlEncodeEntitiesReentrant(doc,
|
|
xmlBufferContent(cur->content));
|
|
#endif
|
|
if (buffer != NULL) {
|
|
xmlBufferWriteCHAR(buf, buffer);
|
|
xmlFree(buffer);
|
|
}
|
|
}
|
|
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))
|
|
xmlBufferWriteChar(buf, "\n");
|
|
htmlNodeListDump(buf, doc, cur->children, format);
|
|
if ((format) && (info != NULL) && (!info->isinline) &&
|
|
(cur->last->type != HTML_TEXT_NODE) &&
|
|
(cur->last->type != HTML_ENTITY_REF_NODE) &&
|
|
(cur->children != cur->last))
|
|
xmlBufferWriteChar(buf, "\n");
|
|
}
|
|
xmlBufferWriteChar(buf, "</");
|
|
xmlBufferWriteCHAR(buf, cur->name);
|
|
xmlBufferWriteChar(buf, ">");
|
|
if ((format) && (info != NULL) && (!info->isinline) &&
|
|
(cur->next != NULL)) {
|
|
if ((cur->next->type != HTML_TEXT_NODE) &&
|
|
(cur->next->type != HTML_ENTITY_REF_NODE))
|
|
xmlBufferWriteChar(buf, "\n");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
void
|
|
htmlNodeDump(xmlBufferPtr buf, xmlDocPtr doc, xmlNodePtr cur) {
|
|
htmlNodeDumpFormat(buf, doc, cur, 1);
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
|
|
if (encoding != NULL) {
|
|
xmlCharEncoding enc;
|
|
|
|
enc = xmlParseCharEncoding(encoding);
|
|
if (enc != XML_CHAR_ENCODING_UTF8) {
|
|
handler = xmlFindCharEncodingHandler(encoding);
|
|
if (handler == NULL)
|
|
return(-1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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);
|
|
}
|
|
|
|
/**
|
|
* htmlDocContentDump:
|
|
* @buf: the HTML buffer output
|
|
* @cur: the document
|
|
*
|
|
* Dump an HTML document.
|
|
*/
|
|
static void
|
|
htmlDocContentDump(xmlBufferPtr buf, xmlDocPtr cur, int format) {
|
|
int type;
|
|
|
|
/*
|
|
* force to output the stuff as HTML, especially for entities
|
|
*/
|
|
type = cur->type;
|
|
cur->type = XML_HTML_DOCUMENT_NODE;
|
|
if (cur->intSubset != NULL)
|
|
htmlDtdDump(buf, cur);
|
|
else {
|
|
/* Default to HTML-4.0 transitionnal @@@@ */
|
|
xmlBufferWriteChar(buf, "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" \"http://www.w3.org/TR/REC-html40/loose.dtd\">");
|
|
|
|
}
|
|
if (cur->children != NULL) {
|
|
htmlNodeListDump(buf, cur, cur->children, format);
|
|
}
|
|
xmlBufferWriteChar(buf, "\n");
|
|
cur->type = (xmlElementType) type;
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
xmlOutputBufferPtr buf;
|
|
xmlCharEncodingHandlerPtr handler = NULL;
|
|
const char *encoding;
|
|
|
|
if (cur == NULL) {
|
|
#ifdef DEBUG_TREE
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"htmlDocDumpMemory : document == NULL\n");
|
|
#endif
|
|
*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) {
|
|
*mem = NULL;
|
|
*size = 0;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Fallback to HTML or ASCII when the encoding is unspecified
|
|
*/
|
|
if (handler == NULL)
|
|
handler = xmlFindCharEncodingHandler("HTML");
|
|
if (handler == NULL)
|
|
handler = xmlFindCharEncodingHandler("ascii");
|
|
|
|
buf = xmlAllocOutputBuffer(handler);
|
|
if (buf == NULL) {
|
|
*mem = NULL;
|
|
*size = 0;
|
|
return;
|
|
}
|
|
|
|
htmlDocContentDumpOutput(buf, cur, NULL);
|
|
xmlOutputBufferFlush(buf);
|
|
if (buf->conv != NULL) {
|
|
*size = buf->conv->use;
|
|
*mem = xmlStrndup(buf->conv->content, *size);
|
|
} else {
|
|
*size = buf->buffer->use;
|
|
*mem = xmlStrndup(buf->buffer->content, *size);
|
|
}
|
|
(void)xmlOutputBufferClose(buf);
|
|
}
|
|
|
|
|
|
/************************************************************************
|
|
* *
|
|
* Dumping HTML tree content to an I/O output buffer *
|
|
* *
|
|
************************************************************************/
|
|
|
|
void
|
|
htmlDocContentDumpFormatOutput(xmlOutputBufferPtr buf, xmlDocPtr cur,
|
|
const char *encoding, int format);
|
|
/**
|
|
* 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) {
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"htmlDtdDump : no internal subset\n");
|
|
return;
|
|
}
|
|
xmlOutputBufferWriteString(buf, "<!DOCTYPE ");
|
|
xmlOutputBufferWriteString(buf, (const char *)cur->name);
|
|
if (cur->ExternalID != NULL) {
|
|
xmlOutputBufferWriteString(buf, " PUBLIC ");
|
|
xmlBufferWriteQuotedString(buf->buffer, cur->ExternalID);
|
|
if (cur->SystemID != NULL) {
|
|
xmlOutputBufferWriteString(buf, " ");
|
|
xmlBufferWriteQuotedString(buf->buffer, cur->SystemID);
|
|
}
|
|
} else if (cur->SystemID != NULL) {
|
|
xmlOutputBufferWriteString(buf, " SYSTEM ");
|
|
xmlBufferWriteQuotedString(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;
|
|
|
|
/*
|
|
* TODO: 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).
|
|
*/
|
|
|
|
if (cur == NULL) {
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"htmlAttrDump : property == NULL\n");
|
|
return;
|
|
}
|
|
xmlOutputBufferWriteString(buf, " ");
|
|
xmlOutputBufferWriteString(buf, (const char *)cur->name);
|
|
if (cur->children != NULL) {
|
|
value = xmlNodeListGetString(doc, cur->children, 0);
|
|
if (value) {
|
|
xmlOutputBufferWriteString(buf, "=");
|
|
xmlBufferWriteQuotedString(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) {
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"htmlAttrListDump : property == NULL\n");
|
|
return;
|
|
}
|
|
while (cur != NULL) {
|
|
htmlAttrDumpOutput(buf, doc, cur, encoding);
|
|
cur = cur->next;
|
|
}
|
|
}
|
|
|
|
|
|
void htmlNodeDumpOutput(xmlOutputBufferPtr buf, xmlDocPtr doc,
|
|
xmlNodePtr cur, const char *encoding);
|
|
|
|
/**
|
|
* 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) {
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"htmlNodeListDump : node == NULL\n");
|
|
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;
|
|
|
|
if (cur == NULL) {
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"htmlNodeDump : node == NULL\n");
|
|
return;
|
|
}
|
|
/*
|
|
* Special cases.
|
|
*/
|
|
if (cur->type == XML_DTD_NODE)
|
|
return;
|
|
if (cur->type == XML_HTML_DOCUMENT_NODE) {
|
|
htmlDocContentDumpOutput(buf, (xmlDocPtr) 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) ||
|
|
(!xmlStrEqual(cur->parent->name, BAD_CAST "script")))) {
|
|
xmlChar *buffer;
|
|
|
|
#ifndef XML_USE_BUFFER_CONTENT
|
|
buffer = xmlEncodeEntitiesReentrant(doc, cur->content);
|
|
#else
|
|
buffer = xmlEncodeEntitiesReentrant(doc,
|
|
xmlBufferContent(cur->content));
|
|
#endif
|
|
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, "<!--");
|
|
#ifndef XML_USE_BUFFER_CONTENT
|
|
xmlOutputBufferWriteString(buf, (const char *)cur->content);
|
|
#else
|
|
xmlOutputBufferWriteString(buf, (const char *)
|
|
xmlBufferContent(cur->content));
|
|
#endif
|
|
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, " ");
|
|
#ifndef XML_USE_BUFFER_CONTENT
|
|
xmlOutputBufferWriteString(buf, (const char *)cur->content);
|
|
#else
|
|
xmlOutputBufferWriteString(buf, (const char *)
|
|
xmlBufferContent(cur->content));
|
|
#endif
|
|
}
|
|
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) {
|
|
#ifndef XML_USE_BUFFER_CONTENT
|
|
xmlOutputBufferWriteString(buf, (const char *)cur->content);
|
|
#else
|
|
xmlOutputBufferWriteString(buf, (const char *)
|
|
xmlBufferContent(cur->content));
|
|
#endif
|
|
}
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Get specific HTML info for taht node.
|
|
*/
|
|
info = htmlTagLookup(cur->name);
|
|
|
|
xmlOutputBufferWriteString(buf, "<");
|
|
xmlOutputBufferWriteString(buf, (const char *)cur->name);
|
|
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) &&
|
|
(!xmlStrEqual(cur->parent->name, BAD_CAST "pre")))
|
|
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, "></");
|
|
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) &&
|
|
(!xmlStrEqual(cur->parent->name, BAD_CAST "pre")))
|
|
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
|
|
*/
|
|
|
|
#ifndef XML_USE_BUFFER_CONTENT
|
|
xmlOutputBufferWriteString(buf, (const char *) cur->content);
|
|
#else
|
|
xmlOutputBufferWriteString(buf,
|
|
(const char *) xmlBufferContent(cur->content));
|
|
#endif
|
|
}
|
|
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) &&
|
|
(!xmlStrEqual(cur->name, BAD_CAST "pre")))
|
|
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) &&
|
|
(!xmlStrEqual(cur->name, BAD_CAST "pre")))
|
|
xmlOutputBufferWriteString(buf, "\n");
|
|
}
|
|
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) &&
|
|
(!xmlStrEqual(cur->parent->name, BAD_CAST "pre")))
|
|
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
|
|
*
|
|
* Dump an HTML document.
|
|
*/
|
|
void
|
|
htmlDocContentDumpFormatOutput(xmlOutputBufferPtr buf, xmlDocPtr cur,
|
|
const char *encoding, int format) {
|
|
int type;
|
|
|
|
/*
|
|
* 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;
|
|
|
|
if (cur == NULL) {
|
|
#ifdef DEBUG_TREE
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"htmlDocDump : document == NULL\n");
|
|
#endif
|
|
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)
|
|
return(-1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
|
|
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)
|
|
return(-1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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 (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)
|
|
return(-1);
|
|
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_HTML_ENABLED */
|