org.codehaus.plexus.util.xml.pull.MXSerializer Maven / Gradle / Ivy
/* -*- c-basic-offset: 4; indent-tabs-mode: nil; -*- //------100-columns-wide------>|*/
// for license please see accompanying LICENSE.txt file (available also at http://www.xmlpull.org/)
package org.codehaus.plexus.util.xml.pull;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
/**
* Implementation of XmlSerializer interface from XmlPull V1 API.
* This implementation is optimized for performance and low memory footprint.
*
* Implemented features:
* - FEATURE_NAMES_INTERNED - when enabled all returned names
* (namespaces, prefixes) will be interned and it is required that
* all names passed as arguments MUST be interned
*
- FEATURE_SERIALIZER_ATTVALUE_USE_APOSTROPHE
*
* Implemented properties:
* - PROPERTY_SERIALIZER_INDENTATION
*
- PROPERTY_SERIALIZER_LINE_SEPARATOR
*
*
*/
public class MXSerializer implements XmlSerializer {
protected final static String XML_URI = "http://www.w3.org/XML/1998/namespace";
protected final static String XMLNS_URI = "http://www.w3.org/2000/xmlns/";
private static final boolean TRACE_SIZING = false;
protected final String FEATURE_SERIALIZER_ATTVALUE_USE_APOSTROPHE =
"http://xmlpull.org/v1/doc/features.html#serializer-attvalue-use-apostrophe";
protected final String FEATURE_NAMES_INTERNED =
"http://xmlpull.org/v1/doc/features.html#names-interned";
protected final String PROPERTY_SERIALIZER_INDENTATION =
"http://xmlpull.org/v1/doc/properties.html#serializer-indentation";
protected final String PROPERTY_SERIALIZER_LINE_SEPARATOR =
"http://xmlpull.org/v1/doc/properties.html#serializer-line-separator";
protected final static String PROPERTY_LOCATION =
"http://xmlpull.org/v1/doc/properties.html#location";
// properties/features
protected boolean namesInterned;
protected boolean attributeUseApostrophe;
protected String indentationString = null; //" ";
protected String lineSeparator = "\n";
protected String location;
protected Writer out;
protected int autoDeclaredPrefixes;
protected int depth = 0;
// element stack
protected String elNamespace[] = new String[ 2 ];
protected String elName[] = new String[ elNamespace.length ];
protected int elNamespaceCount[] = new int[ elNamespace.length ];
//namespace stack
protected int namespaceEnd = 0;
protected String namespacePrefix[] = new String[ 8 ];
protected String namespaceUri[] = new String[ namespacePrefix.length ];
protected boolean finished;
protected boolean pastRoot;
protected boolean setPrefixCalled;
protected boolean startTagIncomplete;
protected boolean doIndent;
protected boolean seenTag;
protected boolean seenBracket;
protected boolean seenBracketBracket;
// buffer output if needed to write escaped String see text(String)
private static final int BUF_LEN = Runtime.getRuntime().freeMemory() > 1000000L ? 8*1024 : 256;
protected char buf[] = new char[ BUF_LEN ];
protected static final String precomputedPrefixes[];
static {
precomputedPrefixes = new String[32]; //arbitrary number ...
for (int i = 0; i < precomputedPrefixes.length; i++)
{
precomputedPrefixes[i] = ("n"+i).intern();
}
}
private boolean checkNamesInterned = false;
private void checkInterning(String name) {
if(namesInterned && name != name.intern()) {
throw new IllegalArgumentException(
"all names passed as arguments must be interned"
+"when NAMES INTERNED feature is enabled");
}
}
protected void reset() {
location = null;
out = null;
autoDeclaredPrefixes = 0;
depth = 0;
// nullify references on all levels to allow it to be GCed
for (int i = 0; i < elNamespaceCount.length; i++)
{
elName[ i ] = null;
elNamespace[ i ] = null;
elNamespaceCount[ i ] = 2;
}
namespaceEnd = 0;
//NOTE: no need to intern() as all literal strings and string-valued constant expressions
//are interned. String literals are defined in 3.10.5 of the Java Language Specification
// just checking ...
//assert "xmlns" == "xmlns".intern();
//assert XMLNS_URI == XMLNS_URI.intern();
//TODO: how to prevent from reporting this namespace?
// this is special namespace declared for consistency with XML infoset
namespacePrefix[ namespaceEnd ] = "xmlns";
namespaceUri[ namespaceEnd ] = XMLNS_URI;
++namespaceEnd;
namespacePrefix[ namespaceEnd ] = "xml";
namespaceUri[ namespaceEnd ] = XML_URI;
++namespaceEnd;
finished = false;
pastRoot = false;
setPrefixCalled = false;
startTagIncomplete = false;
//doIntent is not changed
seenTag = false;
seenBracket = false;
seenBracketBracket = false;
}
protected void ensureElementsCapacity() {
final int elStackSize = elName.length;
//assert (depth + 1) >= elName.length;
// we add at least one extra slot ...
final int newSize = (depth >= 7 ? 2 * depth : 8) + 2; // = lucky 7 + 1 //25
if(TRACE_SIZING) {
System.err.println(
getClass().getName()+" elStackSize "+elStackSize+" ==> "+newSize);
}
final boolean needsCopying = elStackSize > 0;
String[] arr = null;
// reuse arr local variable slot
arr = new String[newSize];
if(needsCopying) System.arraycopy(elName, 0, arr, 0, elStackSize);
elName = arr;
arr = new String[newSize];
if(needsCopying) System.arraycopy(elNamespace, 0, arr, 0, elStackSize);
elNamespace = arr;
final int[] iarr = new int[newSize];
if(needsCopying) {
System.arraycopy(elNamespaceCount, 0, iarr, 0, elStackSize);
} else {
// special initialization
iarr[0] = 0;
}
elNamespaceCount = iarr;
}
protected void ensureNamespacesCapacity() { //int size) {
//int namespaceSize = namespacePrefix != null ? namespacePrefix.length : 0;
//assert (namespaceEnd >= namespacePrefix.length);
//if(size >= namespaceSize) {
//int newSize = size > 7 ? 2 * size : 8; // = lucky 7 + 1 //25
final int newSize = namespaceEnd > 7 ? 2 * namespaceEnd : 8;
if(TRACE_SIZING) {
System.err.println(
getClass().getName()+" namespaceSize "+namespacePrefix.length+" ==> "+newSize);
}
final String[] newNamespacePrefix = new String[newSize];
final String[] newNamespaceUri = new String[newSize];
if(namespacePrefix != null) {
System.arraycopy(
namespacePrefix, 0, newNamespacePrefix, 0, namespaceEnd);
System.arraycopy(
namespaceUri, 0, newNamespaceUri, 0, namespaceEnd);
}
namespacePrefix = newNamespacePrefix;
namespaceUri = newNamespaceUri;
// TODO use hashes for quick namespace->prefix lookups
// if( ! allStringsInterned ) {
// int[] newNamespacePrefixHash = new int[newSize];
// if(namespacePrefixHash != null) {
// System.arraycopy(
// namespacePrefixHash, 0, newNamespacePrefixHash, 0, namespaceEnd);
// }
// namespacePrefixHash = newNamespacePrefixHash;
// }
//prefixesSize = newSize;
// ////assert nsPrefixes.length > size && nsPrefixes.length == newSize
//}
}
public void setFeature(String name,
boolean state) throws IllegalArgumentException, IllegalStateException
{
if(name == null) {
throw new IllegalArgumentException("feature name can not be null");
}
if(FEATURE_NAMES_INTERNED.equals(name)) {
namesInterned = state;
} else if(FEATURE_SERIALIZER_ATTVALUE_USE_APOSTROPHE.equals(name)) {
attributeUseApostrophe = state;
} else {
throw new IllegalStateException("unsupported feature "+name);
}
}
public boolean getFeature(String name) throws IllegalArgumentException
{
if(name == null) {
throw new IllegalArgumentException("feature name can not be null");
}
if(FEATURE_NAMES_INTERNED.equals(name)) {
return namesInterned;
} else if(FEATURE_SERIALIZER_ATTVALUE_USE_APOSTROPHE.equals(name)) {
return attributeUseApostrophe;
} else {
return false;
}
}
// precomputed variables to simplify writing indentation
protected int offsetNewLine;
protected int indentationJump;
protected char[] indentationBuf;
protected int maxIndentLevel;
protected boolean writeLineSepartor; //should end-of-line be written
protected boolean writeIndentation; // is indentation used?
/**
* For maximum efficiency when writing indents the required output is pre-computed
* This is internal function that recomputes buffer after user requested chnages.
*/
protected void rebuildIndentationBuf() {
if(doIndent == false) return;
final int maxIndent = 65; //hardcoded maximum indentation size in characters
int bufSize = 0;
offsetNewLine = 0;
if(writeLineSepartor) {
offsetNewLine = lineSeparator.length();
bufSize += offsetNewLine;
}
maxIndentLevel = 0;
if(writeIndentation) {
indentationJump = indentationString.length();
maxIndentLevel = maxIndent / indentationJump;
bufSize += maxIndentLevel * indentationJump;
}
if(indentationBuf == null || indentationBuf.length < bufSize) {
indentationBuf = new char[bufSize + 8];
}
int bufPos = 0;
if(writeLineSepartor) {
for (int i = 0; i < lineSeparator.length(); i++)
{
indentationBuf[ bufPos++ ] = lineSeparator.charAt(i);
}
}
if(writeIndentation) {
for (int i = 0; i < maxIndentLevel; i++)
{
for (int j = 0; j < indentationString.length(); j++)
{
indentationBuf[ bufPos++ ] = indentationString.charAt(j);
}
}
}
}
// if(doIndent) writeIndent();
protected void writeIndent() throws IOException {
final int start = writeLineSepartor ? 0 : offsetNewLine;
final int level = (depth > maxIndentLevel) ? maxIndentLevel : depth;
out.write( indentationBuf, start, (level * indentationJump) + offsetNewLine);
}
public void setProperty(String name,
Object value) throws IllegalArgumentException, IllegalStateException
{
if(name == null) {
throw new IllegalArgumentException("property name can not be null");
}
if(PROPERTY_SERIALIZER_INDENTATION.equals(name)) {
indentationString = (String)value;
} else if(PROPERTY_SERIALIZER_LINE_SEPARATOR.equals(name)) {
lineSeparator = (String)value;
} else if(PROPERTY_LOCATION.equals(name)) {
location = (String) value;
} else {
throw new IllegalStateException("unsupported property "+name);
}
writeLineSepartor = lineSeparator != null && lineSeparator.length() > 0;
writeIndentation = indentationString != null && indentationString.length() > 0;
// optimize - do not write when nothing to write ...
doIndent = indentationString != null && (writeLineSepartor || writeIndentation);
//NOTE: when indentationString == null there is no indentation
// (even though writeLineSeparator may be true ...)
rebuildIndentationBuf();
seenTag = false; // for consistency
}
public Object getProperty(String name) throws IllegalArgumentException
{
if(name == null) {
throw new IllegalArgumentException("property name can not be null");
}
if(PROPERTY_SERIALIZER_INDENTATION.equals(name)) {
return indentationString;
} else if(PROPERTY_SERIALIZER_LINE_SEPARATOR.equals(name)) {
return lineSeparator;
} else if(PROPERTY_LOCATION.equals(name)) {
return location;
} else {
return null;
}
}
private String getLocation() {
return location != null ? " @"+location : "";
}
// this is special method that can be accessed directly to retrieve Writer serializer is using
public Writer getWriter()
{
return out;
}
public void setOutput(Writer writer)
{
reset();
out = writer;
}
public void setOutput(OutputStream os, String encoding) throws IOException
{
if(os == null) throw new IllegalArgumentException("output stream can not be null");
reset();
if(encoding != null) {
out = new OutputStreamWriter(os, encoding);
} else {
out = new OutputStreamWriter(os);
}
}
public void startDocument (String encoding, Boolean standalone) throws IOException
{
char apos = attributeUseApostrophe ? '\'' : '"';
if(attributeUseApostrophe) {
out.write("");
if(writeLineSepartor) {
out.write(lineSeparator);
}
}
public void endDocument() throws IOException
{
// close all unclosed tag;
while(depth > 0) {
endTag(elNamespace[ depth ], elName[ depth ]);
}
if(writeLineSepartor) {
out.write(lineSeparator);
}
//assert depth == 0;
//assert startTagIncomplete == false;
finished = pastRoot = startTagIncomplete = true;
out.flush();
}
public void setPrefix(String prefix, String namespace) throws IOException
{
if(startTagIncomplete) closeStartTag();
//assert prefix != null;
//assert namespace != null;
if (prefix == null) {
prefix = "";
}
if(!namesInterned) {
prefix = prefix.intern(); //will throw NPE if prefix==null
} else if(checkNamesInterned) {
checkInterning(prefix);
} else if(prefix == null) {
throw new IllegalArgumentException("prefix must be not null"+getLocation());
}
//check that prefix is not duplicated ...
for (int i = elNamespaceCount[ depth ]; i < namespaceEnd; i++)
{
if(prefix == namespacePrefix[ i ]) {
throw new IllegalStateException("duplicated prefix "+printable(prefix)+getLocation());
}
}
if(!namesInterned) {
namespace = namespace.intern();
} else if(checkNamesInterned) {
checkInterning(namespace);
} else if(namespace == null) {
throw new IllegalArgumentException("namespace must be not null"+getLocation());
}
if(namespaceEnd >= namespacePrefix.length) {
ensureNamespacesCapacity();
}
namespacePrefix[ namespaceEnd ] = prefix;
namespaceUri[ namespaceEnd ] = namespace;
++namespaceEnd;
setPrefixCalled = true;
}
protected String lookupOrDeclarePrefix( String namespace ) {
return getPrefix(namespace, true);
}
public String getPrefix(String namespace, boolean generatePrefix)
{
//assert namespace != null;
if(!namesInterned) {
// when String is interned we can do much faster namespace stack lookups ...
namespace = namespace.intern();
} else if(checkNamesInterned) {
checkInterning(namespace);
//assert namespace != namespace.intern();
}
if(namespace == null) {
throw new IllegalArgumentException("namespace must be not null"+getLocation());
} else if(namespace.length() == 0) {
throw new IllegalArgumentException("default namespace cannot have prefix"+getLocation());
}
// first check if namespace is already in scope
for (int i = namespaceEnd - 1; i >= 0 ; --i)
{
if(namespace == namespaceUri[ i ]) {
final String prefix = namespacePrefix[ i ];
// now check that prefix is still in scope
for (int p = namespaceEnd - 1; p > i ; --p)
{
if(prefix == namespacePrefix[ p ])
continue; // too bad - prefix is redeclared with different namespace
}
return prefix;
}
}
// so not found it ...
if(!generatePrefix) {
return null;
}
return generatePrefix(namespace);
}
private String generatePrefix(String namespace) {
//assert namespace == namespace.intern();
while(true) {
++autoDeclaredPrefixes;
//fast lookup uses table that was pre-initialized in static{} ....
final String prefix = autoDeclaredPrefixes < precomputedPrefixes.length
? precomputedPrefixes[autoDeclaredPrefixes] : ("n"+autoDeclaredPrefixes).intern();
// make sure this prefix is not declared in any scope (avoid hiding in-scope prefixes)!
for (int i = namespaceEnd - 1; i >= 0 ; --i)
{
if(prefix == namespacePrefix[ i ]) {
continue; // prefix is already declared - generate new and try again
}
}
// declare prefix
if(namespaceEnd >= namespacePrefix.length) {
ensureNamespacesCapacity();
}
namespacePrefix[ namespaceEnd ] = prefix;
namespaceUri[ namespaceEnd ] = namespace;
++namespaceEnd;
return prefix;
}
}
public int getDepth()
{
return depth;
}
public String getNamespace ()
{
return elNamespace[depth];
}
public String getName()
{
return elName[depth];
}
public XmlSerializer startTag (String namespace, String name) throws IOException
{
if(startTagIncomplete) {
closeStartTag();
}
seenBracket = seenBracketBracket = false;
if(doIndent && depth > 0 && seenTag) {
writeIndent();
}
seenTag = true;
setPrefixCalled = false;
startTagIncomplete = true;
++depth;
if( (depth + 1) >= elName.length) {
ensureElementsCapacity();
}
////assert namespace != null;
if(checkNamesInterned && namesInterned) checkInterning(namespace);
elNamespace[ depth ] = (namesInterned || namespace == null) ? namespace : namespace.intern();
//assert name != null;
//elName[ depth ] = name;
if(checkNamesInterned && namesInterned) checkInterning(name);
elName[ depth ] = (namesInterned || name == null) ? name : name.intern();
if(out == null) {
throw new IllegalStateException("setOutput() must called set before serialization can start");
}
out.write('<');
if(namespace != null) {
if(namespace.length() > 0) {
//ALEK: in future make it as feature on serializer
String prefix = null;
if(depth > 0 && (namespaceEnd - elNamespaceCount[depth-1]) == 1) {
// if only one prefix was declared un-declare it if prefix is already declared on parent el with the same URI
String uri = namespaceUri[namespaceEnd-1];
if(uri == namespace || uri.equals(namespace)) {
String elPfx = namespacePrefix[namespaceEnd-1];
// 2 == to skip predefined namespaces (xml and xmlns ...)
for(int pos = elNamespaceCount[depth-1] - 1; pos >= 2; --pos ) {
String pf = namespacePrefix[pos];
if(pf == elPfx || pf.equals(elPfx)) {
String n = namespaceUri[pos];
if(n == uri || n.equals(uri)) {
--namespaceEnd; //un-declare namespace
prefix = elPfx;
}
break;
}
}
}
}
if(prefix == null) {
prefix = lookupOrDeclarePrefix( namespace );
}
//assert prefix != null;
// make sure that default ("") namespace to not print ":"
if(prefix.length() > 0) {
out.write(prefix);
out.write(':');
}
} else {
// make sure that default namespace can be declared
for (int i = namespaceEnd - 1; i >= 0 ; --i)
{
if(namespacePrefix[ i ] == "") {
final String uri = namespaceUri[ i ];
if(uri == null) {
// declare default namespace
setPrefix("", "");
} else if(uri.length() > 0) {
throw new IllegalStateException(
"start tag can not be written in empty default namespace "+
"as default namespace is currently bound to '"+uri+"'"+getLocation());
}
break;
}
}
}
}
out.write(name);
return this;
}
public XmlSerializer attribute (String namespace, String name,
String value) throws IOException
{
if(!startTagIncomplete) {
throw new IllegalArgumentException("startTag() must be called before attribute()"+getLocation());
}
//assert setPrefixCalled == false;
out.write(' ');
////assert namespace != null;
if(namespace != null && namespace.length() > 0) {
//namespace = namespace.intern();
if(!namesInterned) {
namespace = namespace.intern();
} else if(checkNamesInterned) {
checkInterning(namespace);
}
String prefix = lookupOrDeclarePrefix( namespace );
//assert( prefix != null);
if(prefix.length() == 0) {
// needs to declare prefix to hold default namespace
//NOTE: attributes such as a='b' are in NO namespace
prefix = generatePrefix(namespace);
}
out.write(prefix);
out.write(':');
// if(prefix.length() > 0) {
// out.write(prefix);
// out.write(':');
// }
}
//assert name != null;
out.write(name);
out.write('=');
//assert value != null;
out.write( attributeUseApostrophe ? '\'' : '"');
writeAttributeValue(value, out);
out.write( attributeUseApostrophe ? '\'' : '"');
return this;
}
protected void closeStartTag() throws IOException {
if(finished) {
throw new IllegalArgumentException("trying to write past already finished output"+getLocation());
}
if(seenBracket) {
seenBracket = seenBracketBracket = false;
}
if( startTagIncomplete || setPrefixCalled ) {
if(setPrefixCalled) {
throw new IllegalArgumentException(
"startTag() must be called immediately after setPrefix()"+getLocation());
}
if(!startTagIncomplete) {
throw new IllegalArgumentException("trying to close start tag that is not opened"+getLocation());
}
// write all namespace declarations!
writeNamespaceDeclarations();
out.write('>');
elNamespaceCount[ depth ] = namespaceEnd;
startTagIncomplete = false;
}
}
private void writeNamespaceDeclarations() throws IOException
{
//int start = elNamespaceCount[ depth - 1 ];
for (int i = elNamespaceCount[ depth - 1 ]; i < namespaceEnd; i++)
{
if(doIndent && namespaceUri[ i ].length() > 40) {
writeIndent();
out.write(" ");
}
if(namespacePrefix[ i ] != "") {
out.write(" xmlns:");
out.write(namespacePrefix[ i ]);
out.write('=');
} else {
out.write(" xmlns=");
}
out.write( attributeUseApostrophe ? '\'' : '"');
//NOTE: escaping of namespace value the same way as attributes!!!!
writeAttributeValue(namespaceUri[ i ], out);
out.write( attributeUseApostrophe ? '\'' : '"');
}
}
public XmlSerializer endTag(String namespace, String name) throws IOException
{
// check that level is valid
////assert namespace != null;
//if(namespace != null) {
// namespace = namespace.intern();
//}
seenBracket = seenBracketBracket = false;
if(namespace != null) {
if(!namesInterned) {
namespace = namespace.intern();
} else if(checkNamesInterned) {
checkInterning(namespace);
}
}
if(namespace != elNamespace[ depth ])
{
throw new IllegalArgumentException(
"expected namespace "+printable(elNamespace[ depth ])
+" and not "+printable(namespace)+getLocation());
}
if(name == null) {
throw new IllegalArgumentException("end tag name can not be null"+getLocation());
}
if(checkNamesInterned && namesInterned) {
checkInterning(name);
}
if((!namesInterned && !name.equals(elName[ depth ]))
|| (namesInterned && name != elName[ depth ]))
{
throw new IllegalArgumentException(
"expected element name "+printable(elName[ depth ])+" and not "+printable(name)+getLocation());
}
if(startTagIncomplete) {
writeNamespaceDeclarations();
out.write(" />"); //space is added to make it easier to work in XHTML!!!
--depth;
} else {
--depth;
//assert startTagIncomplete == false;
if(doIndent && seenTag) { writeIndent(); }
out.write(" 0) {
//TODO prefix should be alredy known from matching start tag ...
final String prefix = lookupOrDeclarePrefix( namespace );
//assert( prefix != null);
if(prefix.length() > 0) {
out.write(prefix);
out.write(':');
}
}
out.write(name);
out.write('>');
}
namespaceEnd = elNamespaceCount[ depth ];
startTagIncomplete = false;
seenTag = true;
return this;
}
public XmlSerializer text (String text) throws IOException
{
//assert text != null;
if(startTagIncomplete || setPrefixCalled) closeStartTag();
if(doIndent && seenTag) seenTag = false;
writeElementContent(text, out);
return this;
}
public XmlSerializer text (char [] buf, int start, int len) throws IOException
{
if(startTagIncomplete || setPrefixCalled) closeStartTag();
if(doIndent && seenTag) seenTag = false;
writeElementContent(buf, start, len, out);
return this;
}
public void cdsect (String text) throws IOException
{
if(startTagIncomplete || setPrefixCalled || seenBracket) closeStartTag();
if(doIndent && seenTag) seenTag = false;
out.write("");
}
public void entityRef (String text) throws IOException
{
if(startTagIncomplete || setPrefixCalled || seenBracket) closeStartTag();
if(doIndent && seenTag) seenTag = false;
out.write('&');
out.write(text); //escape?
out.write(';');
}
public void processingInstruction (String text) throws IOException
{
if(startTagIncomplete || setPrefixCalled || seenBracket) closeStartTag();
if(doIndent && seenTag) seenTag = false;
out.write("");
}
public void comment (String text) throws IOException
{
if(startTagIncomplete || setPrefixCalled || seenBracket) closeStartTag();
if(doIndent && seenTag) seenTag = false;
out.write("");
}
public void docdecl (String text) throws IOException
{
if(startTagIncomplete || setPrefixCalled || seenBracket) closeStartTag();
if(doIndent && seenTag) seenTag = false;
out.write("");
}
public void ignorableWhitespace (String text) throws IOException
{
if(startTagIncomplete || setPrefixCalled || seenBracket) closeStartTag();
if(doIndent && seenTag) seenTag = false;
if(text.length() == 0) {
throw new IllegalArgumentException(
"empty string is not allowed for ignorable whitespace"+getLocation());
}
out.write(text); //no escape?
}
public void flush () throws IOException
{
if(!finished && startTagIncomplete) closeStartTag();
out.flush();
}
// --- utility methods
protected void writeAttributeValue(String value, Writer out) throws IOException
{
//.[apostrophe and <, & escaped],
final char quot = attributeUseApostrophe ? '\'' : '"';
final String quotEntity = attributeUseApostrophe ? "'" : """;
int pos = 0;
for (int i = 0; i < value.length(); i++)
{
char ch = value.charAt(i);
if(ch == '&') {
if(i > pos) out.write(value.substring(pos, i));
out.write("&");
pos = i + 1;
} if(ch == '<') {
if(i > pos) out.write(value.substring(pos, i));
out.write("<");
pos = i + 1;
}else if(ch == quot) {
if(i > pos) out.write(value.substring(pos, i));
out.write(quotEntity);
pos = i + 1;
} else if(ch < 32) {
//in XML 1.0 only legal character are #x9 | #xA | #xD
// and they must be escaped otherwise in attribute value they are normalized to spaces
if(ch == 13 || ch == 10 || ch == 9) {
if(i > pos) out.write(value.substring(pos, i));
out.write("&#");
out.write(Integer.toString(ch));
out.write(';');
pos = i + 1;
} else {
throw new IllegalStateException(
"character "+Integer.toString(ch)+" is not allowed in output"+getLocation());
// in XML 1.1 legal are [#x1-#xD7FF]
// if(ch > 0) {
// if(i > pos) out.write(text.substring(pos, i));
// out.write("&#");
// out.write(Integer.toString(ch));
// out.write(';');
// pos = i + 1;
// } else {
// throw new IllegalStateException(
// "character zero is not allowed in XML 1.1 output"+getLocation());
// }
}
}
}
if(pos > 0) {
out.write(value.substring(pos));
} else {
out.write(value); // this is shortcut to the most common case
}
}
protected void writeElementContent(String text, Writer out) throws IOException
{
// escape '<', '&', ']]>', <32 if necessary
int pos = 0;
for (int i = 0; i < text.length(); i++)
{
//TODO: check if doing char[] text.getChars() would be faster than getCharAt(i) ...
char ch = text.charAt(i);
if(ch == ']') {
if(seenBracket) {
seenBracketBracket = true;
} else {
seenBracket = true;
}
} else {
if(ch == '&') {
if(i > pos) out.write(text.substring(pos, i));
out.write("&");
pos = i + 1;
} else if(ch == '<') {
if(i > pos) out.write(text.substring(pos, i));
out.write("<");
pos = i + 1;
} else if(seenBracketBracket && ch == '>') {
if(i > pos) out.write(text.substring(pos, i));
out.write(">");
pos = i + 1;
} else if(ch < 32) {
//in XML 1.0 only legal character are #x9 | #xA | #xD
if( ch == 9 || ch == 10 || ch == 13) {
// pass through
// } else if(ch == 13) { //escape
// if(i > pos) out.write(text.substring(pos, i));
// out.write("&#");
// out.write(Integer.toString(ch));
// out.write(';');
// pos = i + 1;
} else {
throw new IllegalStateException(
"character "+Integer.toString(ch)+" is not allowed in output"+getLocation());
// in XML 1.1 legal are [#x1-#xD7FF]
// if(ch > 0) {
// if(i > pos) out.write(text.substring(pos, i));
// out.write("&#");
// out.write(Integer.toString(ch));
// out.write(';');
// pos = i + 1;
// } else {
// throw new IllegalStateException(
// "character zero is not allowed in XML 1.1 output"+getLocation());
// }
}
}
if(seenBracket) {
seenBracketBracket = seenBracket = false;
}
}
}
if(pos > 0) {
out.write(text.substring(pos));
} else {
out.write(text); // this is shortcut to the most common case
}
}
protected void writeElementContent(char[] buf, int off, int len, Writer out) throws IOException
{
// escape '<', '&', ']]>'
final int end = off + len;
int pos = off;
for (int i = off; i < end; i++)
{
final char ch = buf[i];
if(ch == ']') {
if(seenBracket) {
seenBracketBracket = true;
} else {
seenBracket = true;
}
} else {
if(ch == '&') {
if(i > pos) {
out.write(buf, pos, i - pos);
}
out.write("&");
pos = i + 1;
} else if(ch == '<') {
if(i > pos) {
out.write(buf, pos, i - pos);
}
out.write("<");
pos = i + 1;
} else if(seenBracketBracket && ch == '>') {
if(i > pos) {
out.write(buf, pos, i - pos);
}
out.write(">");
pos = i + 1;
} else if(ch < 32) {
//in XML 1.0 only legal character are #x9 | #xA | #xD
if( ch == 9 || ch == 10 || ch == 13) {
// pass through
// } else if(ch == 13 ) { //if(ch == '\r') {
// if(i > pos) {
// out.write(buf, pos, i - pos);
// }
// out.write("&#");
// out.write(Integer.toString(ch));
// out.write(';');
// pos = i + 1;
} else {
throw new IllegalStateException(
"character "+Integer.toString(ch)+" is not allowed in output"+getLocation());
// in XML 1.1 legal are [#x1-#xD7FF]
// if(ch > 0) {
// if(i > pos) out.write(text.substring(pos, i));
// out.write("&#");
// out.write(Integer.toString(ch));
// out.write(';');
// pos = i + 1;
// } else {
// throw new IllegalStateException(
// "character zero is not allowed in XML 1.1 output"+getLocation());
// }
}
}
if(seenBracket) {
seenBracketBracket = seenBracket = false;
}
// assert seenBracketBracket == seenBracket == false;
}
}
if(end > pos) {
out.write(buf, pos, end - pos);
}
}
/** simple utility method -- good for debugging */
protected static final String printable(String s) {
if(s == null) return "null";
StringBuilder retval = new StringBuilder(s.length() + 16);
retval.append("'");
char ch;
for (int i = 0; i < s.length(); i++) {
addPrintable(retval, s.charAt(i));
}
retval.append("'");
return retval.toString();
}
protected static final String printable(char ch) {
StringBuilder retval = new StringBuilder();
addPrintable(retval, ch);
return retval.toString();
}
private static void addPrintable(StringBuilder retval, char ch)
{
switch (ch)
{
case '\b':
retval.append("\\b");
break;
case '\t':
retval.append("\\t");
break;
case '\n':
retval.append("\\n");
break;
case '\f':
retval.append("\\f");
break;
case '\r':
retval.append("\\r");
break;
case '\"':
retval.append("\\\"");
break;
case '\'':
retval.append("\\\'");
break;
case '\\':
retval.append("\\\\");
break;
default:
if (ch < 0x20 || ch > 0x7e) {
final String ss = "0000" + Integer.toString(ch, 16);
retval.append( "\\u" ).append( ss, ss.length() - 4, ss.length());
} else {
retval.append(ch);
}
}
}
}
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