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/* Generated By:JavaCC: Do not edit this line. XPointerFrameworkParser.java */
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.cocoon.sax.xpointer;
import java.io.StringReader;
import java.util.Map;
import java.util.HashMap;
/**
* Parser for the XPointer Framework Syntax, see the specification at:
* http://www.w3.org/TR/2003/REC-xptr-framework-20030325/
*
* Some of the token definitions (for recognizing NCName's) were copied from
* the JXPath parser from Apache Commons (to save some typing), written by
* Ingo Macherius, Gerald Huck <{macherius, huck}@gmd.de> and Dmitri Plotnikov.
*
* $Id$
*/
public class XPointerFrameworkParser implements XPointerFrameworkParserConstants {
private static final String XPOINTER = "xpointer";
private static final String XMLNS = "xmlns";
private XPointer xpointer = new XPointer();
private Map namespaces = new HashMap();
public static XPointer parse(final String xpointer) throws ParseException {
XPointerFrameworkParser xfp = new XPointerFrameworkParser(new StringReader(xpointer));
xfp.pointer();
return xfp.getXPointer();
}
public XPointer getXPointer() {
return this.xpointer;
}
private String unescape(final String data) throws ParseException {
StringBuilder result = new StringBuilder(data.length());
boolean inCircumflex = false;
for (int i = 0; i < data.length(); i++) {
char c = data.charAt(i);
if (inCircumflex) {
switch (c) {
case '^':
case '(':
case ')':
result.append(c);
inCircumflex = false;
break;
default:
throw new ParseException("Incorrect use of circumflex character at position "
+ i
+ " in the string "
+ data);
}
} else if (c == '^') {
inCircumflex = true;
} else {
result.append(c);
}
}
return result.toString();
}
final public void pointer() throws ParseException {
if (jj_2_1(2)) {
schemeBased();
} else {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case NCName:
shortHand();
break;
default:
jj_la1[0] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
}
}
final public void shortHand() throws ParseException {
Token x;
x = jj_consume_token(NCName);
xpointer.addPart(new ShorthandPart(x.image));
}
final public void schemeBased() throws ParseException {
pointerPart();
label_1:
while (true) {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case NCName:
case WS:
case QName:
;
break;
default:
jj_la1[1] = jj_gen;
break label_1;
}
label_2:
while (true) {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case WS:
;
break;
default:
jj_la1[2] = jj_gen;
break label_2;
}
jj_consume_token(WS);
}
pointerPart();
}
}
final public void pointerPart() throws ParseException {
Token x;
String schemeName;
String schemeData;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case NCName:
x = jj_consume_token(NCName);
break;
case QName:
x = jj_consume_token(QName);
break;
default:
jj_la1[3] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
jj_consume_token(LBRACE);
// when going inside the scheme data, swith to a different lexical state
token_source.SwitchTo(IN_SCHEME);
// store the scheme name
schemeName = x.image;
schemeData = schemeData();
jj_consume_token(RBRACE);
// when going outside the scheme data, swith back to the default lexical state
token_source.SwitchTo(DEFAULT);
// parse schemeName in prefix and localName
String schemeNamespace = null, schemeLocalName = null;
int colonPos = schemeName.indexOf(':');
if (colonPos != -1) {
String schemePrefix = schemeName.substring(0, colonPos);
schemeNamespace = (String) namespaces.get(schemePrefix);
schemeLocalName = schemeName.substring(colonPos + 1);
} else {
schemeLocalName = schemeName;
}
// add the pointer part
if (schemeNamespace == null && XMLNS.equals(schemeLocalName)) {
int eqPos = schemeData.indexOf("=");
if (eqPos == -1) {
{if (true) throw new ParseException("xmlns scheme data should contain an equals sign");}
}
// Note: the trimming below is not entirely correct, since space is only allowed left
// and right of the equal sign, but not at the beginning and end of the schemeData
String prefix = schemeData.substring(0, eqPos).trim();
String namespace = schemeData.substring(eqPos + 1, schemeData.length()).trim();
xpointer.addPart(new XmlnsPart(prefix, namespace));
namespaces.put(prefix, namespace);
} else if (schemeNamespace == null && XPOINTER.equals(schemeLocalName)) {
xpointer.addPart(new XPointerPart(schemeData));
} else {
xpointer.addPart(new UnsupportedPart(schemeName));
}
}
final public String schemeData() throws ParseException {
String temp;
StringBuilder schemeData = new StringBuilder();
label_3:
while (true) {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case LBRACE:
case CIRC_LBRACE:
case CIRC_RBRACE:
case DOUBLE_CIRC:
case NormalChar:
;
break;
default:
jj_la1[4] = jj_gen;
break label_3;
}
temp = escapedData();
schemeData.append(temp);
}
{if (true) return unescape(schemeData.toString());}
throw new Error("Missing return statement in function");
}
final public String escapedData() throws ParseException {
Token x;
String temp;
StringBuilder data = new StringBuilder();
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case NormalChar:
x = jj_consume_token(NormalChar);
data.append(x.image);
break;
case CIRC_LBRACE:
x = jj_consume_token(CIRC_LBRACE);
data.append(x.image);
break;
case CIRC_RBRACE:
x = jj_consume_token(CIRC_RBRACE);
data.append(x.image);
break;
case DOUBLE_CIRC:
x = jj_consume_token(DOUBLE_CIRC);
data.append(x.image);
break;
case LBRACE:
x = jj_consume_token(LBRACE);
data.append(x.image);
temp = schemeData();
data.append(temp);
x = jj_consume_token(RBRACE);
data.append(x.image);
break;
default:
jj_la1[5] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
{if (true) return data.toString();}
throw new Error("Missing return statement in function");
}
private boolean jj_2_1(int xla) {
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return !jj_3_1(); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(0, xla); }
}
private boolean jj_3_1() {
if (jj_3R_4()) return true;
return false;
}
private boolean jj_3R_4() {
if (jj_3R_5()) return true;
return false;
}
private boolean jj_3R_5() {
Token xsp;
xsp = jj_scanpos;
if (jj_scan_token(7)) {
jj_scanpos = xsp;
if (jj_scan_token(9)) return true;
}
if (jj_scan_token(LBRACE)) return true;
return false;
}
/** Generated Token Manager. */
public XPointerFrameworkParserTokenManager token_source;
SimpleCharStream jj_input_stream;
/** Current token. */
public Token token;
/** Next token. */
public Token jj_nt;
private int jj_ntk;
private Token jj_scanpos, jj_lastpos;
private int jj_la;
private int jj_gen;
final private int[] jj_la1 = new int[6];
static private int[] jj_la1_0;
static {
jj_la1_init_0();
}
private static void jj_la1_init_0() {
jj_la1_0 = new int[] {0x80,0x380,0x100,0x280,0xf400,0xf400,};
}
final private JJCalls[] jj_2_rtns = new JJCalls[1];
private boolean jj_rescan = false;
private int jj_gc = 0;
/** Constructor with InputStream. */
public XPointerFrameworkParser(java.io.InputStream stream) {
this(stream, null);
}
/** Constructor with InputStream and supplied encoding */
public XPointerFrameworkParser(java.io.InputStream stream, String encoding) {
try { jj_input_stream = new SimpleCharStream(stream, encoding, 1, 1); } catch(java.io.UnsupportedEncodingException e) { throw new RuntimeException(e); }
token_source = new XPointerFrameworkParserTokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 6; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
/** Reinitialise. */
public void ReInit(java.io.InputStream stream) {
ReInit(stream, null);
}
/** Reinitialise. */
public void ReInit(java.io.InputStream stream, String encoding) {
try { jj_input_stream.ReInit(stream, encoding, 1, 1); } catch(java.io.UnsupportedEncodingException e) { throw new RuntimeException(e); }
token_source.ReInit(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 6; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
/** Constructor. */
public XPointerFrameworkParser(java.io.Reader stream) {
jj_input_stream = new SimpleCharStream(stream, 1, 1);
token_source = new XPointerFrameworkParserTokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 6; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
/** Reinitialise. */
public void ReInit(java.io.Reader stream) {
jj_input_stream.ReInit(stream, 1, 1);
token_source.ReInit(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 6; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
/** Constructor with generated Token Manager. */
public XPointerFrameworkParser(XPointerFrameworkParserTokenManager tm) {
token_source = tm;
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 6; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
/** Reinitialise. */
public void ReInit(XPointerFrameworkParserTokenManager tm) {
token_source = tm;
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 6; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
private Token jj_consume_token(int kind) throws ParseException {
Token oldToken;
if ((oldToken = token).next != null) token = token.next;
else token = token.next = token_source.getNextToken();
jj_ntk = -1;
if (token.kind == kind) {
jj_gen++;
if (++jj_gc > 100) {
jj_gc = 0;
for (int i = 0; i < jj_2_rtns.length; i++) {
JJCalls c = jj_2_rtns[i];
while (c != null) {
if (c.gen < jj_gen) c.first = null;
c = c.next;
}
}
}
return token;
}
token = oldToken;
jj_kind = kind;
throw generateParseException();
}
static private final class LookaheadSuccess extends java.lang.Error { }
final private LookaheadSuccess jj_ls = new LookaheadSuccess();
private boolean jj_scan_token(int kind) {
if (jj_scanpos == jj_lastpos) {
jj_la--;
if (jj_scanpos.next == null) {
jj_lastpos = jj_scanpos = jj_scanpos.next = token_source.getNextToken();
} else {
jj_lastpos = jj_scanpos = jj_scanpos.next;
}
} else {
jj_scanpos = jj_scanpos.next;
}
if (jj_rescan) {
int i = 0; Token tok = token;
while (tok != null && tok != jj_scanpos) { i++; tok = tok.next; }
if (tok != null) jj_add_error_token(kind, i);
}
if (jj_scanpos.kind != kind) return true;
if (jj_la == 0 && jj_scanpos == jj_lastpos) throw jj_ls;
return false;
}
/** Get the next Token. */
final public Token getNextToken() {
if (token.next != null) token = token.next;
else token = token.next = token_source.getNextToken();
jj_ntk = -1;
jj_gen++;
return token;
}
/** Get the specific Token. */
final public Token getToken(int index) {
Token t = token;
for (int i = 0; i < index; i++) {
if (t.next != null) t = t.next;
else t = t.next = token_source.getNextToken();
}
return t;
}
private int jj_ntk() {
if ((jj_nt=token.next) == null)
return (jj_ntk = (token.next=token_source.getNextToken()).kind);
else
return (jj_ntk = jj_nt.kind);
}
private java.util.List jj_expentries = new java.util.ArrayList();
private int[] jj_expentry;
private int jj_kind = -1;
private int[] jj_lasttokens = new int[100];
private int jj_endpos;
private void jj_add_error_token(int kind, int pos) {
if (pos >= 100) return;
if (pos == jj_endpos + 1) {
jj_lasttokens[jj_endpos++] = kind;
} else if (jj_endpos != 0) {
jj_expentry = new int[jj_endpos];
for (int i = 0; i < jj_endpos; i++) {
jj_expentry[i] = jj_lasttokens[i];
}
jj_entries_loop: for (java.util.Iterator it = jj_expentries.iterator(); it.hasNext();) {
int[] oldentry = (int[])(it.next());
if (oldentry.length == jj_expentry.length) {
for (int i = 0; i < jj_expentry.length; i++) {
if (oldentry[i] != jj_expentry[i]) {
continue jj_entries_loop;
}
}
jj_expentries.add(jj_expentry);
break jj_entries_loop;
}
}
if (pos != 0) jj_lasttokens[(jj_endpos = pos) - 1] = kind;
}
}
/** Generate ParseException. */
public ParseException generateParseException() {
jj_expentries.clear();
boolean[] la1tokens = new boolean[16];
if (jj_kind >= 0) {
la1tokens[jj_kind] = true;
jj_kind = -1;
}
for (int i = 0; i < 6; i++) {
if (jj_la1[i] == jj_gen) {
for (int j = 0; j < 32; j++) {
if ((jj_la1_0[i] & (1< jj_gen) {
jj_la = p.arg; jj_lastpos = jj_scanpos = p.first;
switch (i) {
case 0: jj_3_1(); break;
}
}
p = p.next;
} while (p != null);
} catch(LookaheadSuccess ls) { }
}
jj_rescan = false;
}
private void jj_save(int index, int xla) {
JJCalls p = jj_2_rtns[index];
while (p.gen > jj_gen) {
if (p.next == null) { p = p.next = new JJCalls(); break; }
p = p.next;
}
p.gen = jj_gen + xla - jj_la; p.first = token; p.arg = xla;
}
static final class JJCalls {
int gen;
Token first;
int arg;
JJCalls next;
}
}
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