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forgot to commit HTMLtree yesterday, Daniel.
This commit is contained in:
Daniel Veillard
353
HTMLtree.c
Normal file
353
HTMLtree.c
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@ -0,0 +1,353 @@
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/*
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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@w3.org
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*/
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#include "config.h"
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#include <stdio.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h> /* for memset() only ! */
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#include "tree.h"
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#include "entities.h"
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#include "valid.h"
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#define HTML_TEXT_NODE XML_TEXT_NODE
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#define HTML_ENTITY_REF_NODE XML_ENTITY_REF_NODE
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#define HTML_COMMENT_NODE XML_COMMENT_NODE
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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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fprintf(stderr, "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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xmlBufferWriteChar(buf, " ");
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xmlBufferWriteQuotedString(buf, cur->SystemID);
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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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if ((cur->entities == NULL) && (cur->elements == NULL) &&
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(cur->attributes == NULL) && (cur->notations == NULL)) {
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xmlBufferWriteChar(buf, ">\n");
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return;
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}
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xmlBufferWriteChar(buf, " [\n");
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if (cur->entities != NULL)
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xmlDumpEntitiesTable(buf, (xmlEntitiesTablePtr) cur->entities);
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if (cur->notations != NULL)
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xmlDumpNotationTable(buf, (xmlNotationTablePtr) cur->notations);
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if (cur->elements != NULL)
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xmlDumpElementTable(buf, (xmlElementTablePtr) cur->elements);
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if (cur->attributes != NULL)
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xmlDumpAttributeTable(buf, (xmlAttributeTablePtr) cur->attributes);
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xmlBufferWriteChar(buf, "]");
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/* TODO !!! a lot more things to dump ... */
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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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CHAR *value;
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if (cur == NULL) {
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fprintf(stderr, "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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value = xmlNodeListGetString(doc, cur->val, 0);
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if (value) {
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xmlBufferWriteChar(buf, "=");
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xmlBufferWriteQuotedString(buf, value);
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free(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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* 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) {
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if (cur == NULL) {
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fprintf(stderr, "htmlAttrListDump : property == NULL\n");
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return;
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}
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while (cur != NULL) {
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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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htmlNodeDump(xmlBufferPtr buf, xmlDocPtr doc, xmlNodePtr cur, int level);
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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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* @level: the imbrication level for indenting
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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 level) {
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int i;
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if (cur == NULL) {
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fprintf(stderr, "htmlNodeListDump : node == NULL\n");
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return;
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}
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while (cur != NULL) {
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if ((cur->type != HTML_TEXT_NODE) &&
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(cur->type != HTML_ENTITY_REF_NODE)) {
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xmlBufferWriteChar(buf, "\n");
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}
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htmlNodeDump(buf, doc, cur, level);
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cur = cur->next;
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}
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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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* @level: the imbrication level for indenting
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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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static void
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htmlNodeDump(xmlBufferPtr buf, xmlDocPtr doc, xmlNodePtr cur, int level) {
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int i;
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if (cur == NULL) {
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fprintf(stderr, "htmlNodeDump : node == NULL\n");
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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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CHAR *buffer;
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buffer = xmlEncodeEntitiesReentrant(doc, cur->content);
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if (buffer != NULL) {
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xmlBufferWriteCHAR(buf, buffer);
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free(buffer);
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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) {
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if (cur->content != NULL) {
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xmlBufferWriteChar(buf, "<!--");
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xmlBufferWriteCHAR(buf, cur->content);
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xmlBufferWriteChar(buf, "-->");
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}
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return;
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}
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if (cur->type == HTML_ENTITY_REF_NODE) {
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xmlBufferWriteChar(buf, "&");
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xmlBufferWriteCHAR(buf, cur->name);
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xmlBufferWriteChar(buf, ";");
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return;
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}
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xmlBufferWriteChar(buf, "<");
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if ((cur->ns != NULL) && (cur->ns->prefix != NULL)) {
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xmlBufferWriteCHAR(buf, cur->ns->prefix);
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xmlBufferWriteChar(buf, ":");
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}
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xmlBufferWriteCHAR(buf, cur->name);
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if (cur->nsDef)
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xmlNsListDump(buf, cur->nsDef);
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if (cur->properties != NULL)
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htmlAttrListDump(buf, doc, cur->properties);
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if ((cur->content == NULL) && (cur->childs == NULL)) {
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xmlBufferWriteChar(buf, "/>\n");
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return;
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}
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xmlBufferWriteChar(buf, ">");
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if (cur->content != NULL) {
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CHAR *buffer;
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buffer = xmlEncodeEntitiesReentrant(doc, cur->content);
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if (buffer != NULL) {
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xmlBufferWriteCHAR(buf, buffer);
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free(buffer);
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}
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}
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if (cur->childs != NULL) {
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htmlNodeListDump(buf, doc, cur->childs, level + 1);
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}
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xmlBufferWriteChar(buf, "</");
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if ((cur->ns != NULL) && (cur->ns->prefix != NULL)) {
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xmlBufferWriteCHAR(buf, cur->ns->prefix);
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xmlBufferWriteChar(buf, ":");
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}
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xmlBufferWriteCHAR(buf, cur->name);
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xmlBufferWriteChar(buf, ">\n");
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}
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/**
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* htmlDocContentDump:
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* @buf: the HTML buffer output
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* @cur: the document
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*
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* Dump an HTML document.
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*/
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static void
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htmlDocContentDump(xmlBufferPtr buf, xmlDocPtr cur) {
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xmlBufferWriteChar(buf, "<?xml version=");
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if (cur->version != NULL)
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xmlBufferWriteQuotedString(buf, cur->version);
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else
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xmlBufferWriteChar(buf, "\"1.0\"");
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if (cur->encoding != NULL) {
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xmlBufferWriteChar(buf, " encoding=");
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xmlBufferWriteQuotedString(buf, cur->encoding);
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}
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switch (cur->standalone) {
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case 0:
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xmlBufferWriteChar(buf, " standalone=\"no\"");
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break;
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case 1:
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xmlBufferWriteChar(buf, " standalone=\"yes\"");
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break;
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}
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xmlBufferWriteChar(buf, "?>\n");
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if (cur->intSubset != NULL)
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htmlDtdDump(buf, cur);
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if (cur->root != NULL) {
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htmlNodeDump(buf, cur, cur->root, 0);
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}
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}
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/**
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* htmlDocDumpMemory:
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* @cur: the document
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* @mem: OUT: the memory pointer
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* @size: OUT: the memory lenght
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*
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* Dump an HTML document in memory and return the CHAR * and it's size.
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* It's up to the caller to free the memory.
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*/
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void
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htmlDocDumpMemory(xmlDocPtr cur, CHAR**mem, int *size) {
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xmlBufferPtr buf;
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if (cur == NULL) {
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#ifdef DEBUG_TREE
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fprintf(stderr, "xmlDocDumpMemory : document == NULL\n");
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#endif
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*mem = NULL;
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*size = 0;
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return;
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}
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buf = xmlBufferCreate();
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if (buf == NULL) {
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*mem = NULL;
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*size = 0;
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return;
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}
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htmlDocContentDump(buf, cur);
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*mem = buf->content;
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*size = buf->use;
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memset(buf, -1, sizeof(xmlBuffer));
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free(buf);
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}
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/**
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* htmlDocDump:
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* @f: the FILE*
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* @cur: the document
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*
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* Dump an HTML document to an open FILE.
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*/
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void
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htmlDocDump(FILE *f, xmlDocPtr cur) {
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xmlBufferPtr buf;
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if (cur == NULL) {
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#ifdef DEBUG_TREE
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fprintf(stderr, "xmlDocDump : document == NULL\n");
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#endif
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return;
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}
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buf = xmlBufferCreate();
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if (buf == NULL) return;
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htmlDocContentDump(buf, cur);
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xmlBufferDump(f, buf);
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xmlBufferFree(buf);
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}
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/**
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* htmlSaveFile:
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* @filename: the filename
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* @cur: the document
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*
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* Dump an HTML document to a file.
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*
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* returns: the number of byte written or -1 in case of failure.
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*/
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int
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htmlSaveFile(const char *filename, xmlDocPtr cur) {
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xmlBufferPtr buf;
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FILE *output = NULL;
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int ret;
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/*
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* save the content to a temp buffer.
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*/
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buf = xmlBufferCreate();
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if (buf == NULL) return(0);
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htmlDocContentDump(buf, cur);
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output = fopen(filename, "w");
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if (output == NULL) return(-1);
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ret = xmlBufferDump(output, buf);
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fclose(output);
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xmlBufferFree(buf);
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return(ret * sizeof(CHAR));
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}
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