/*
* call-seq:
* new
*
* Create a new document
*/
static VALUE new(int argc, VALUE *argv, VALUE klass)
{
VALUE uri, external_id, rest, rb_doc;
rb_scan_args(argc, argv, "0*", &rest);
uri = rb_ary_entry(rest, (long)0);
external_id = rb_ary_entry(rest, (long)1);
htmlDocPtr doc = htmlNewDoc(
RTEST(uri) ? (const xmlChar *)StringValuePtr(uri) : NULL,
RTEST(external_id) ? (const xmlChar *)StringValuePtr(external_id) : NULL
);
rb_doc = Nokogiri_wrap_xml_document(klass, doc);
rb_obj_call_init(rb_doc, argc, argv);
return rb_doc ;
}
/*
* call-seq:
* read_io(io, url, encoding, options)
*
* Read the HTML document from +io+ with given +url+, +encoding+,
* and +options+. See Nokogiri::HTML.parse
*/
static VALUE read_io( VALUE klass,
VALUE io,
/**
* Perform a save to a specified file in the form of a html page
*
* \param filename the file to save to
* \param page_title title of the page
*/
bool tree_urlfile_save(struct tree *tree, const char *filename,
const char *page_title)
{
int res;
xmlDoc *doc;
xmlNode *html, *head, *title, *body;
/* Unfortunately the Browse Hotlist format is invalid HTML,
* so this is a lie.
*/
doc = htmlNewDoc(
(const xmlChar *) "http://www.w3.org/TR/html4/strict.dtd",
(const xmlChar *) "-//W3C//DTD HTML 4.01//EN");
if (doc == NULL) {
warn_user("NoMemory", 0);
return false;
}
html = xmlNewNode(NULL, (const xmlChar *) "html");
if (html == NULL) {
warn_user("NoMemory", 0);
xmlFreeDoc(doc);
return false;
}
xmlDocSetRootElement(doc, html);
head = xmlNewChild(html, NULL, (const xmlChar *) "head", NULL);
if (head == NULL) {
warn_user("NoMemory", 0);
xmlFreeDoc(doc);
return false;
}
title = xmlNewTextChild(head, NULL, (const xmlChar *) "title",
(const xmlChar *) page_title);
if (title == NULL) {
warn_user("NoMemory", 0);
xmlFreeDoc(doc);
return false;
}
body = xmlNewChild(html, NULL, (const xmlChar *) "body", NULL);
if (body == NULL) {
warn_user("NoMemory", 0);
xmlFreeDoc(doc);
return false;
}
if (!tree_url_save_directory(tree_get_root(tree), body)) {
warn_user("NoMemory", 0);
xmlFreeDoc(doc);
return false;
}
doc->charset = XML_CHAR_ENCODING_UTF8;
res = htmlSaveFileEnc(filename, doc, "iso-8859-1");
if (res == -1) {
warn_user("HotlistSaveError", 0);
xmlFreeDoc(doc);
return false;
}
xmlFreeDoc(doc);
return true;
}
void test_html()
{
htmlDocPtr doc;
doc = htmlNewDoc( "", "" );
xmlNodePtr root_node = xmlNewNode(NULL,BAD_CAST"ap");
//设置根节点
xmlDocSetRootElement(doc,root_node);
// cur = xmlDocGetRootElement(doc); //获取文档根结点
//在根节点中直接创建节点
xmlNewTextChild(root_node, NULL, BAD_CAST "newNode1", BAD_CAST "newNode1 content");
xmlNewTextChild(root_node, NULL, BAD_CAST "newNode2", BAD_CAST "newNode2 content");
xmlNewTextChild(root_node, NULL, BAD_CAST "newNode3", BAD_CAST "newNode3 content");
/*
xmlChar *key;
key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1); //获取文本结点的文本，需用其子结点
xmlFree(key);
*/
//创建一个绑定在根节点的子节点
xmlNewChild(root_node, NULL, BAD_CAST "node1",BAD_CAST "content of node1");
/*
xmlNodeSetContent(curNode, (xmlChar *) "content changed");//设置结点的文本内容
//得到一个节点的内容：
//xmlChar *value = xmlNodeGetContent(node);
//返回值value应该使用xmlFree(value)释放内存
xmlUnlinkNode(curNode); //将当前结点从文档中断链（unlink），这样本文档就不会再包含这个子结点
xmlFreeNode(curNode); //手动删除断链结点的内存, 若没有xmlDelNode或者xmlRemoveNode，使用此函数
xmlChar *uri;
uri = xmlGetProp(cur, "uri"); //获取属性值
xmlFree(uri); //释放内存
xmlSetProp(curNode,BAD_(xmlChar *)"attribute", (xmlChar *) "no"); //设置当前结点的attribute属性的属性值为no
*/
//创建一个节点，设置其内容和属性，然后加入根结点
xmlNodePtr node = xmlNewNode(NULL,BAD_CAST"node2");
xmlNodePtr content = xmlNewText(BAD_CAST"NODE CONTENT");
xmlAddChild(root_node,node);
xmlAddChild(node,content);
xmlNewProp(node,BAD_CAST"attribute",BAD_CAST "yes");
//通过xmlNewProp()增加一个节点的属性
node=xmlNewChild(root_node, NULL, BAD_CAST "node3", BAD_CAST"node has attributes");
xmlNewProp(node, BAD_CAST "attribute", BAD_CAST "no");
//创建一个儿子和孙子节点
node = xmlNewNode(NULL, BAD_CAST "son");
xmlAddChild(root_node,node);
xmlNodePtr grandson = xmlNewNode(NULL, BAD_CAST "grandson");
xmlAddChild(node,grandson);
xmlAddChild(grandson, xmlNewText(BAD_CAST "This is a grandson node"));
//存储xml文档
int nRel = xmlSaveFile("CreatedXml.xml",doc);
if (nRel != -1)
{
printf("%s\n",d_ConvertCharset("GBK", "utf-8", "一个xml文档被创建\n"));
}
//保存文件
/*
* xmlSaveFormatFile (docname, doc, 1); 保存文件到磁盘，第一个参数是写入文件的名，第二个参数是一个xmlDoc结构指针，第三个参数设定为1，保证在输出上写入缩进。
*/
xmlSaveFormatFileEnc( "-", doc, "UTF-8", 1);
doc=htmlReadFile("ap", NULL, -1);
xmlSaveFormatFileEnc( "-", doc, "UTF-8", 1);
}
