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aQute.junit.Tag Maven / Gradle / Ivy
package aQute.junit;
import static java.nio.charset.StandardCharsets.UTF_8;
import java.io.BufferedReader;
import java.io.CharArrayWriter;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.function.ObjIntConsumer;
import java.util.regex.Pattern;
/**
* The Tag class represents a minimal XML tree. It consist of a named element
* with a map 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
// element
String name; // Name
// of
// the
// tag
Map attributes = new LinkedHashMap<>(); // Attributes
// name
// ->
// value
List content = new ArrayList<>(); // Content
// elements
boolean cdata;
private static final Pattern CDATA_SPLIT_PATTERN = Pattern.compile("(?<=]])(?=>)");
static final DateTimeFormatter DATE_TIME_FORMATTER = DateTimeFormatter.ofPattern("yyyyMMddHHmmss.SSS", Locale.ROOT)
.withZone(ZoneId.systemDefault());
/**
* Construct a new Tag with a name.
*/
public Tag(String name) {
this.name = name;
}
/**
* Construct a new Tag with a name.
*/
public Tag(String name, Map attributes) {
this.name = name;
this.attributes = attributes;
}
/**
* 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) {
this.name = name;
for (int i = 0; (i + 1) < attributes.length; i += 2)
addAttribute(attributes[i], attributes[i + 1]);
}
/**
* Construct a new Tag with a single string as content.
*/
public Tag(String name, String content) {
this.name = name;
addContent(content);
}
public Tag(Tag testsuite, String name) {
this(name);
testsuite.addContent(this);
}
/**
* Add a new attribute.
*/
public void addAttribute(String key, String value) {
attributes.put(key, value);
}
/**
* Add a new attribute.
*/
public void addAttribute(String key, Object value) {
if (value == null)
return;
attributes.put(key, value.toString());
}
/**
* Add a new attribute.
*/
public void addAttribute(String key, int value) {
attributes.put(key, Integer.toString(value));
}
/**
* Add a new date attribute. The date is formatted by DATE_TIME_FORMATTER
* described at the top of this class.
*/
public void addAttribute(String key, Date value) {
attributes.put(key, DATE_TIME_FORMATTER.format(value.toInstant()));
}
/**
* Add a new content string.
*/
public void addContent(String string) {
content.add(string);
}
/**
* Add a new content tag.
*/
public void addContent(Tag tag) {
content.add(tag);
tag.parent = 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() {
CharArrayWriter sw = new CharArrayWriter();
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 : content) {
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 void print(int indent, PrintWriter pw) {
pw.print("\n");
spaces(pw, indent);
pw.print('<');
pw.print(name);
for (String key : attributes.keySet()) {
String value = escape(attributes.get(key), Tag::appendCodePoint);
pw.print(' ');
pw.print(key);
pw.print("=\"");
pw.print(value);
pw.print('"');
}
if (content.isEmpty()) {
pw.print('/');
} else {
pw.print('>');
for (Object content : content) {
if (content instanceof String) {
String s = (String) content;
if (cdata) {
for (String chunk : CDATA_SPLIT_PATTERN.split(s)) {
pw.write("");
}
} else {
formatted(pw, indent + 2, 60, s);
}
} else if (content instanceof Tag) {
Tag tag = (Tag) content;
tag.print(indent + 2, pw);
} else if (content instanceof URL) {
copyURL(pw, (URL) content);
}
}
pw.print("\n");
spaces(pw, indent);
pw.print("');
}
private void copyURL(PrintWriter pw, URL url) {
try {
try (InputStream in = url.openStream();
BufferedReader rdr = new BufferedReader(new InputStreamReader(in, UTF_8))) {
String line = rdr.readLine();
if (line != null) {
while (line != null && line.trim()
.startsWith(" width - 3)) {
pw.print("\n");
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.
*/
static String escape(String s, ObjIntConsumer appendCodePoint) {
StringBuilder sb = new StringBuilder();
s.codePoints()
.forEachOrdered(codePoint -> {
if (validXMLChar(codePoint)) {
appendCodePoint.accept(sb, codePoint);
} else {
sb.append('&')
.append('#')
.append(codePoint)
.append(';');
}
});
return (sb.length() == s.length()) ? s : sb.toString();
}
private static boolean validXMLChar(int codePoint) {
return (codePoint == 0x09) || //
(codePoint == 0x0A) || //
(codePoint == 0x0D) || //
(codePoint >= 0x20 && codePoint <= 0xD7FF) || //
(codePoint >= 0xE000 && codePoint <= 0xFFFD) || //
(codePoint >= 0x10000 && codePoint <= 0x10FFFF);
}
private static void appendCodePoint(StringBuilder sb, int codePoint) {
switch (codePoint) {
case '"' :
sb.append(""");
break;
case '&' :
sb.append("&");
break;
case '<' :
sb.append("<");
break;
case '>' :
sb.append(">");
break;
default :
sb.appendCodePoint(codePoint);
break;
}
}
/**
* Make spaces.
*/
void spaces(PrintWriter pw, int n) {
while (n-- > 0)
pw.print(' ');
}
/**
* root/preferences/native/os
*/
public Tag[] select(String path) {
return select(path, null);
}
public Tag[] select(String path, Tag mapping) {
List v = new ArrayList<>();
select(path, v, mapping);
return v.toArray(new Tag[0]);
}
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 = "";
}
Tag 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 addContent(URL url) {
content.add(url);
}
public void setCDATA() {
cdata = true;
}
}
