/*
* 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.components.xpointer.parser;
import java.util.HashMap;
import org.apache.cocoon.components.xpointer.ElementPathPart;
import org.apache.cocoon.components.xpointer.ShorthandPart;
import org.apache.cocoon.components.xpointer.UnsupportedPart;
import org.apache.cocoon.components.xpointer.XPointer;
import org.apache.cocoon.components.xpointer.XPointerPart;
import org.apache.cocoon.components.xpointer.XmlnsPart;
public class XPointerFrameworkParser
implements XPointerFrameworkParserConstants {
private XPointer xpointer = new XPointer();
private HashMap namespaces = new HashMap();
public static void main(String[] args) throws Exception {
System.out.println("will parse this: " + args[0]);
XPointerFrameworkParser xfp =
new XPointerFrameworkParser(new java.io.StringReader(args[0]));
xfp.pointer();
}
public static XPointer parse(String xpointer) throws ParseException {
XPointerFrameworkParser xfp =
new XPointerFrameworkParser(new java.io.StringReader(xpointer));
try {
xfp.pointer();
} catch (TokenMgrError e) {
// Rethrow TokenMgrErrors as ParseExceptions, because errors aren't caught by Cocoon,
// and mistyping in a xpointer isn't such a grave error
throw new ParseException(e.getMessage());
}
return xfp.getXPointer();
}
public XPointer getXPointer() {
return xpointer;
}
private String unescape(String data) throws ParseException {
StringBuffer result = new StringBuffer(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 && schemeLocalName.equals("xmlns")) {
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 && schemeLocalName.equals("xpointer")) {
xpointer.addPart(new XPointerPart(schemeData));
} else if (
"http://apache.org/cocoon/xpointer".equals(schemeNamespace)
&& schemeLocalName.equals("elementpath")) {
xpointer.addPart(new ElementPathPart(schemeData));
} else {
xpointer.addPart(new UnsupportedPart(schemeName));
}
}
final public String schemeData() throws ParseException {
String temp;
StringBuffer schemeData = new StringBuffer();
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;
StringBuffer data = new StringBuffer();
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");
}
final private boolean jj_2_1(int xla) {
jj_la = xla;
jj_lastpos = jj_scanpos = token;
boolean retval = !jj_3_1();
jj_save(0, xla);
return retval;
}
final private boolean jj_3R_6() {
if (jj_scan_token(NCName))
return true;
if (jj_la == 0 && jj_scanpos == jj_lastpos)
return false;
return false;
}
final private boolean jj_3R_4() {
if (jj_3R_5())
return true;
if (jj_la == 0 && jj_scanpos == jj_lastpos)
return false;
return false;
}
final private boolean jj_3R_5() {
Token xsp;
xsp = jj_scanpos;
if (jj_3R_6()) {
jj_scanpos = xsp;
if (jj_3R_7())
return true;
if (jj_la == 0 && jj_scanpos == jj_lastpos)
return false;
} else if (jj_la == 0 && jj_scanpos == jj_lastpos)
return false;
if (jj_scan_token(LBRACE))
return true;
if (jj_la == 0 && jj_scanpos == jj_lastpos)
return false;
return false;
}
final private boolean jj_3R_7() {
if (jj_scan_token(QName))
return true;
if (jj_la == 0 && jj_scanpos == jj_lastpos)
return false;
return false;
}
final private boolean jj_3_1() {
if (jj_3R_4())
return true;
if (jj_la == 0 && jj_scanpos == jj_lastpos)
return false;
return false;
}
public XPointerFrameworkParserTokenManager token_source;
SimpleCharStream jj_input_stream;
public Token token, jj_nt;
private int jj_ntk;
private Token jj_scanpos, jj_lastpos;
private int jj_la;
public boolean lookingAhead = false;
private int jj_gen;
final private int[] jj_la1 = new int[6];
static private int[] jj_la1_0;
static {
jj_la1_0();
}
private static void jj_la1_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;
public XPointerFrameworkParser(java.io.InputStream 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();
}
public void ReInit(java.io.InputStream 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();
}
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();
}
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();
}
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();
}
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();
}
final 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();
}
final 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);
}
return (jj_scanpos.kind != kind);
}
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;
}
final public Token getToken(int index) {
Token t = lookingAhead ? jj_scanpos : token;
for (int i = 0; i < index; i++) {
if (t.next != null)
t = t.next;
else
t = t.next = token_source.getNextToken();
}
return t;
}
final 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.Vector jj_expentries = new java.util.Vector();
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];
}
boolean exists = false;
for (java.util.Enumeration enumeration = jj_expentries.elements();
enumeration.hasMoreElements();
) {
int[] oldentry = (int[]) (enumeration.nextElement());
if (oldentry.length == jj_expentry.length) {
exists = true;
for (int i = 0; i < jj_expentry.length; i++) {
if (oldentry[i] != jj_expentry[i]) {
exists = false;
break;
}
}
if (exists)
break;
}
}
if (!exists)
jj_expentries.addElement(jj_expentry);
if (pos != 0)
jj_lasttokens[(jj_endpos = pos) - 1] = kind;
}
}
public ParseException generateParseException() {
jj_expentries.removeAllElements();
boolean[] la1tokens = new boolean[16];
for (int i = 0; i < 16; i++) {
la1tokens[i] = false;
}
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 << j)) != 0) {
la1tokens[j] = true;
}
}
}
}
for (int i = 0; i < 16; i++) {
if (la1tokens[i]) {
jj_expentry = new int[1];
jj_expentry[0] = i;
jj_expentries.addElement(jj_expentry);
}
}
jj_endpos = 0;
jj_rescan_token();
jj_add_error_token(0, 0);
int[][] exptokseq = new int[jj_expentries.size()][];
for (int i = 0; i < jj_expentries.size(); i++) {
exptokseq[i] = (int[]) jj_expentries.elementAt(i);
}
return new ParseException(token, exptokseq, tokenImage);
}
final public void enable_tracing() {
}
final public void disable_tracing() {
}
final private void jj_rescan_token() {
jj_rescan = true;
for (int i = 0; i < 1; i++) {
JJCalls p = jj_2_rtns[i];
do {
if (p.gen > 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);
}
jj_rescan = false;
}
final 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;
}
}