Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $
You can buy this project and download/modify it how often you want.
aQute.lib.tag.Tag Maven / Gradle / Ivy
package aQute.lib.tag;
import java.io.*;
import java.text.*;
import java.util.*;
/**
* The Tag class represents a minimal XML tree. It consist of a named element
* with a hashtable of named attributes. Methods are provided to walk the tree
* and get its constituents. The content of a Tag is a list that contains String
* objects or other Tag objects.
*/
public class Tag {
Tag parent; // Parent
String name; // Name
final Map attributes = new LinkedHashMap();
final List content = new ArrayList(); // Content
final static SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss.SSS");
boolean cdata;
/**
* Construct a new Tag with a name.
*/
public Tag(String name, Object... contents) {
this.name = name;
for (Object c : contents)
content.add(c);
}
public Tag(Tag parent, String name, Object... contents) {
this(name, contents);
parent.addContent(this);
}
/**
* Construct a new Tag with a name.
*/
public Tag(String name, Map attributes, Object... contents) {
this(name, contents);
this.attributes.putAll(attributes);
}
public Tag(String name, Map attributes) {
this(name, attributes, new Object[0]);
}
/**
* Construct a new Tag with a name and a set of attributes. The attributes
* are given as ( name, value ) ...
*/
public Tag(String name, String[] attributes, Object... contents) {
this(name, contents);
for (int i = 0; i < attributes.length; i += 2)
addAttribute(attributes[i], attributes[i + 1]);
}
public Tag(String name, String[] attributes) {
this(name, attributes, new Object[0]);
}
/**
* Add a new attribute.
*/
public Tag addAttribute(String key, String value) {
if (value != null)
attributes.put(key, value);
return this;
}
/**
* Add a new attribute.
*/
public Tag addAttribute(String key, Object value) {
if (value == null)
return this;
attributes.put(key, value.toString());
return this;
}
/**
* Add a new attribute.
*/
public Tag addAttribute(String key, int value) {
attributes.put(key, Integer.toString(value));
return this;
}
/**
* Add a new date attribute. The date is formatted as the SimpleDateFormat
* describes at the top of this class.
*/
public Tag addAttribute(String key, Date value) {
if (value != null) {
synchronized (format) {
attributes.put(key, format.format(value));
}
}
return this;
}
/**
* Add a new content string.
*/
public Tag addContent(String string) {
if (string != null)
content.add(string);
return this;
}
/**
* Add a new content tag.
*/
public Tag addContent(Tag tag) {
content.add(tag);
tag.parent = this;
return this;
}
/**
* Return the name of the tag.
*/
public String getName() {
return name;
}
/**
* Return the attribute value.
*/
public String getAttribute(String key) {
return attributes.get(key);
}
/**
* Return the attribute value or a default if not defined.
*/
public String getAttribute(String key, String deflt) {
String answer = getAttribute(key);
return answer == null ? deflt : answer;
}
/**
* Answer the attributes as a Dictionary object.
*/
public Map getAttributes() {
return attributes;
}
/**
* Return the contents.
*/
public List getContents() {
return content;
}
/**
* Return a string representation of this Tag and all its children
* recursively.
*/
@Override
public String toString() {
StringWriter sw = new StringWriter();
print(0, new PrintWriter(sw));
return sw.toString();
}
/**
* Return only the tags of the first level of descendants that match the
* name.
*/
public List getContents(String tag) {
List out = new ArrayList();
for (Object o : out) {
if (o instanceof Tag && ((Tag) o).getName().equals(tag))
out.add(o);
}
return out;
}
/**
* Return the whole contents as a String (no tag info and attributes).
*/
public String getContentsAsString() {
StringBuilder sb = new StringBuilder();
getContentsAsString(sb);
return sb.toString();
}
/**
* convenient method to get the contents in a StringBuilder.
*/
public void getContentsAsString(StringBuilder sb) {
for (Object o : content) {
if (o instanceof Tag)
((Tag) o).getContentsAsString(sb);
else
sb.append(o.toString());
}
}
/**
* Print the tag formatted to a PrintWriter.
*/
public Tag print(int indent, PrintWriter pw) {
if (indent >= 0) {
pw.println();
spaces(pw, indent);
}
pw.print('<');
pw.print(name);
for (String key : attributes.keySet()) {
String value = escape(attributes.get(key));
pw.print(' ');
pw.print(key);
pw.print("=\"");
pw.print(value);
pw.print("\"");
}
if (content.size() == 0)
pw.print('/');
else {
pw.print('>');
for (Object c : content) {
if (c instanceof String) {
if (cdata) {
pw.print("", "] ]>");
pw.print(s);
pw.print("]]>");
} else
formatted(pw, indent + 2, 60, escape((String) c));
} else if (c instanceof Tag) {
Tag tag = (Tag) c;
tag.print(indent + 2, pw);
}
}
if (indent >= 0) {
pw.println();
spaces(pw, indent);
}
pw.print("');
return this;
}
/**
* Convenience method to print a string nicely and does character conversion
* to entities.
*/
void formatted(PrintWriter pw, int left, int width, String s) {
int pos = width + 1;
s = s.trim();
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
if (i == 0 || (Character.isWhitespace(c) && pos > width - 3)) {
if (left >= 0 && width > 0) {
pw.println();
spaces(pw, left);
}
pos = 0;
}
switch (c) {
case '<' :
pw.print("<");
pos += 4;
break;
case '>' :
pw.print(">");
pos += 4;
break;
case '&' :
pw.print("&");
pos += 5;
break;
default :
pw.print(c);
pos++;
break;
}
}
}
/**
* Escape a string, do entity conversion.
*/
public static String escape(String s) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
switch (c) {
case '<' :
sb.append("<");
break;
case '>' :
sb.append(">");
break;
case '\"' :
sb.append(""");
break;
case '&' :
sb.append("&");
break;
default :
sb.append(c);
break;
}
}
return sb.toString();
}
/**
* Make spaces.
*/
void spaces(PrintWriter pw, int n) {
while (n-- > 0)
pw.print(' ');
}
/**
* root/preferences/native/os
*/
public Collection select(String path) {
return select(path, (Tag) null);
}
public Collection select(String path, Tag mapping) {
List v = new ArrayList();
select(path, v, mapping);
return v;
}
void select(String path, List results, Tag mapping) {
if (path.startsWith("//")) {
int i = path.indexOf('/', 2);
String name = path.substring(2, i < 0 ? path.length() : i);
for (Object o : content) {
if (o instanceof Tag) {
Tag child = (Tag) o;
if (match(name, child, mapping))
results.add(child);
child.select(path, results, mapping);
}
}
return;
}
if (path.length() == 0) {
results.add(this);
return;
}
int i = path.indexOf("/");
String elementName = path;
String remainder = "";
if (i > 0) {
elementName = path.substring(0, i);
remainder = path.substring(i + 1);
}
for (Object o : content) {
if (o instanceof Tag) {
Tag child = (Tag) o;
if (child.getName().equals(elementName) || elementName.equals("*"))
child.select(remainder, results, mapping);
}
}
}
public boolean match(String search, Tag child, Tag mapping) {
String target = child.getName();
String sn = null;
String tn = null;
if (search.equals("*"))
return true;
int s = search.indexOf(':');
if (s > 0) {
sn = search.substring(0, s);
search = search.substring(s + 1);
}
int t = target.indexOf(':');
if (t > 0) {
tn = target.substring(0, t);
target = target.substring(t + 1);
}
if (!search.equals(target)) // different tag names
return false;
if (mapping == null) {
return tn == sn || (sn != null && sn.equals(tn));
}
String suri = sn == null ? mapping.getAttribute("xmlns") : mapping.getAttribute("xmlns:" + sn);
String turi = tn == null ? child.findRecursiveAttribute("xmlns") : child.findRecursiveAttribute("xmlns:" + tn);
return ((turi == null) && (suri == null)) || ((turi != null) && turi.equals(suri));
}
public String getString(String path) {
String attribute = null;
int index = path.indexOf("@");
if (index >= 0) {
// attribute
attribute = path.substring(index + 1);
if (index > 0) {
// prefix path
path = path.substring(index - 1); // skip -1
} else
path = "";
}
Collection tags = select(path);
StringBuilder sb = new StringBuilder();
for (Tag tag : tags) {
if (attribute == null)
tag.getContentsAsString(sb);
else
sb.append(tag.getAttribute(attribute));
}
return sb.toString();
}
public String getStringContent() {
StringBuilder sb = new StringBuilder();
for (Object c : content) {
if (!(c instanceof Tag))
sb.append(c);
}
return sb.toString();
}
public String getNameSpace() {
return getNameSpace(name);
}
public String getNameSpace(String name) {
int index = name.indexOf(':');
if (index > 0) {
String ns = name.substring(0, index);
return findRecursiveAttribute("xmlns:" + ns);
}
return findRecursiveAttribute("xmlns");
}
public String findRecursiveAttribute(String name) {
String value = getAttribute(name);
if (value != null)
return value;
if (parent != null)
return parent.findRecursiveAttribute(name);
return null;
}
public String getLocalName() {
int index = name.indexOf(':');
if (index <= 0)
return name;
return name.substring(index + 1);
}
public void rename(String string) {
name = string;
}
public void setCDATA() {
cdata = true;
}
public String compact() {
StringWriter sw = new StringWriter();
print(Integer.MIN_VALUE, new PrintWriter(sw));
return sw.toString();
}
}
