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yacy_search_server
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*) removing all string operations from the template engine

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- engine should fully operate on bytes now

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2567 6c8d7289-2bf4-0310-a012-ef5d649a1542
pull/1/head
theli 18 years ago
parent 7ef80c1026
commit ef751b9d33
1 changed files with 339 additions and 284 deletions
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177
source/de/anomic/http/httpTemplate.java
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@ -4,27 +4,27 @@
//first published on http://www.anomic.de
//Frankfurt, Germany, 2004
//last major change: 16.01.2005
//
//$LastChangedDate$
//$LastChangedRevision$
//$LastChangedBy$
//
//extended for multi- and alternatives-templates by Alexander Schier
//
//This program is free software; you can redistribute it and/or modify
//it under the terms of the GNU General Public License as published by
//the Free Software Foundation; either version 2 of the License, or
//(at your option) any later version.
//
//This program is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
//GNU General Public License for more details.
//
//You should have received a copy of the GNU General Public License
//along with this program; if not, write to the Free Software
//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
//Using this software in any meaning (reading, learning, copying, compiling,
//running) means that you agree that the Author(s) is (are) not responsible
//for cost, loss of data or any harm that may be caused directly or indirectly
@ -36,7 +36,7 @@
//(are) also not responsible for proper configuration and usage of the
//software, even if provoked by documentation provided together with
//the software.
//
//Any changes to this file according to the GPL as documented in the file
//gpl.txt aside this file in the shipment you received can be done to the
//lines that follows this copyright notice here, but changes must not be
@ -56,6 +56,7 @@ import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PushbackInputStream;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Hashtable;
@ -147,6 +148,8 @@ public final class httpTemplate {
private static final byte[] iOpen = {hash, ps};
private static final byte[] iClose = {ps, hash};
public static final byte[] slash = {(byte)'/'};
public static final Object[] meta_quotation = new Object[] {
new Object[] {pOpen, pClose},
new Object[] {mOpen, mClose},
@ -226,21 +229,21 @@ public final class httpTemplate {
return false;
}
public static String writeTemplate(InputStream in, OutputStream out, Hashtable pattern, byte[] dflt) throws IOException {
return writeTemplate(in, out, pattern, dflt, "");
public static byte[] writeTemplate(InputStream in, OutputStream out, Hashtable pattern, byte[] dflt) throws IOException {
return writeTemplate(in, out, pattern, dflt, new byte[0]);
}
/**
* Reads a input stream, and writes the data with replaced templates on a output stream
*/
public static String writeTemplate(InputStream in, OutputStream out, Hashtable pattern, byte[] dflt, String prefix) throws IOException {
public static byte[] writeTemplate(InputStream in, OutputStream out, Hashtable pattern, byte[] dflt, byte[] prefix) throws IOException {
PushbackInputStream pis = new PushbackInputStream(in, 100);
ByteArrayOutputStream keyStream;
String key;
String multi_key;
byte[] key;
byte[] multi_key;
byte[] replacement;
int bb;
StringBuffer structure=new StringBuffer();
serverByteBuffer structure=new serverByteBuffer();
while (transferUntil(pis, out, hasha)) {
bb = pis.read();
@ -253,7 +256,7 @@ public final class httpTemplate {
if( (bb & 0xFF) != 10){ //kill newline
pis.unread(bb);
}
multi_key = keyStream.toString(); //IMPORTANT: no prefix here
multi_key = keyStream.toByteArray(); //IMPORTANT: no prefix here
keyStream = new ByteArrayOutputStream(); //reset stream
/* DEBUG - print key + value
@ -265,17 +268,18 @@ public final class httpTemplate {
*/
//this needs multi_key without prefix
if( transferUntil(pis, keyStream, (new String(mOpen) + "/" + multi_key + new String(mClose)).getBytes()) ){
if( transferUntil(pis, keyStream, appendBytes(mOpen,slash,multi_key,mClose))){
bb = pis.read();
if((bb & 0xFF) != 10){ //kill newline
pis.unread(bb);
}
String text=keyStream.toString(); //text between #{key}# an #{/key}#
byte[] text=keyStream.toByteArray(); //text between #{key}# an #{/key}#
int num=0;
if(pattern.containsKey(prefix+multi_key) && pattern.get(prefix+multi_key) != null){
String patternKey = getPatternKey(prefix, multi_key);
if(pattern.containsKey(patternKey) && pattern.get(patternKey) != null){
try{
num=Integer.parseInt((String)pattern.get(prefix+multi_key)); // Key contains the iteration number as string
num=Integer.parseInt((String)pattern.get(patternKey)); // Key contains the iteration number as string
}catch(NumberFormatException e){
num=0;
}
@ -286,14 +290,18 @@ public final class httpTemplate {
}
//Enumeration enx = pattern.keys(); while (enx.hasMoreElements()) System.out.println("KEY=" + enx.nextElement()); // DEBUG
structure.append("<"+multi_key+" type=\"multi\" num=\""+num+"\">\n");
structure.append("<".getBytes("UTF-8"))
.append(multi_key)
.append(" type=\"multi\" num=\"".getBytes("UTF-8"))
.append(Integer.toString(num).getBytes("UTF-8"))
.append("\">\n".getBytes("UTF-8"));
for(int i=0;i < num;i++ ){
PushbackInputStream pis2 = new PushbackInputStream(new ByteArrayInputStream(text.getBytes()));
PushbackInputStream pis2 = new PushbackInputStream(new ByteArrayInputStream(text));
//System.out.println("recursing with text(prefix="+ multi_key + "_" + i + "_" +"):"); //DEBUG
//System.out.println(text);
structure.append(writeTemplate(pis2, out, pattern, dflt, prefix+multi_key + "_" + i + "_"));
structure.append(writeTemplate(pis2, out, pattern, dflt, newPrefix(prefix,multi_key,i)));
}//for
structure.append("</"+multi_key+">\n");
structure.append("</".getBytes("UTF-8")).append(multi_key).append(">\n".getBytes("UTF-8"));
}else{//transferUntil
serverLog.logSevere("TEMPLATE", "No Close Key found for #{"+multi_key+"}#"); //prefix here?
}
@ -304,7 +312,7 @@ public final class httpTemplate {
PushbackInputStream pis2;
transferUntil(pis, keyStream, aClose);
key = keyStream.toString(); //Caution: Key does not contain prefix
key = keyStream.toByteArray(); //Caution: Key does not contain prefix
/* DEBUG - print key + value
try{
@ -318,15 +326,16 @@ public final class httpTemplate {
boolean byName=false;
int whichPattern=0;
String patternName="";
if(pattern.containsKey(prefix + key) && pattern.get(prefix + key) != null){
String patternId=(String)pattern.get(prefix + key);
byte[] patternName = new byte[0];
String patternKey = getPatternKey(prefix, key);
if(pattern.containsKey(patternKey) && pattern.get(patternKey) != null){
String patternId=(String)pattern.get(patternKey);
try{
whichPattern=Integer.parseInt(patternId); //index
}catch(NumberFormatException e){
whichPattern=0;
byName=true;
patternName=patternId;
patternName=patternId.getBytes("UTF-8");
}
}else{
//System.out.println("Pattern \""+new String(prefix + key)+"\" is not set"); //DEBUG
@ -337,16 +346,16 @@ public final class httpTemplate {
keyStream = new ByteArrayOutputStream(); //reset stream
if(byName){
//TODO: better Error Handling
transferUntil(pis, keyStream, (new String("%%"+patternName)).getBytes());
transferUntil(pis, keyStream,appendBytes("%%".getBytes("UTF-8"),patternName,null,null));
if(pis.available()==0){
serverLog.logSevere("TEMPLATE", "No such Template: %%"+patternName);
return structure.toString();
return structure.getBytes();
}
keyStream=new ByteArrayOutputStream();
transferUntil(pis, keyStream, "::".getBytes());
pis2 = new PushbackInputStream(new ByteArrayInputStream(keyStream.toString().getBytes()));
structure.append(writeTemplate(pis2, out, pattern, dflt, prefix + key + "_"));
transferUntil(pis, keyStream, (new String("#(/"+key+")#")).getBytes());
pis2 = new PushbackInputStream(new ByteArrayInputStream(keyStream.toByteArray()));
structure.append(writeTemplate(pis2, out, pattern, dflt, newPrefix(prefix,key)));
transferUntil(pis, keyStream, appendBytes("#(/".getBytes("UTF-8"),key,")#".getBytes("UTF-8"),null));
if(pis.available()==0){
serverLog.logSevere("TEMPLATE", "No Close Key found for #("+key+")# (by Name)");
}
@ -359,19 +368,19 @@ public final class httpTemplate {
transferUntil(pis, keyStream, aClose);
//reached the end. output last string.
if(keyStream.toString().equals("/" + key)){
if (java.util.Arrays.equals(keyStream.toByteArray(),appendBytes(slash, key, null,null))) {
pis2 = new PushbackInputStream(new ByteArrayInputStream(text.getBytes()));
//this maybe the wrong, but its the last
structure.append("<"+key+" type=\"alternative\" which=\""+whichPattern+"\" found=\"0\">\n");
structure.append(writeTemplate(pis2, out, pattern, dflt, prefix + key + "_"));
structure.append("</"+key+">\n");
structure.append("<".getBytes("UTF-8")).append(key).append(" type=\"alternative\" which=\"".getBytes("UTF-8")).append(Integer.toString(whichPattern).getBytes("UTF-8")).append("\" found=\"0\">\n".getBytes("UTF-8"));
structure.append(writeTemplate(pis2, out, pattern, dflt, newPrefix(prefix,key)));
structure.append("</".getBytes("UTF-8")).append(key).append(">\n".getBytes("UTF-8"));
found=true;
}else if(others >0 && keyStream.toString().startsWith("/")){ //close nested
others--;
text.append("#("+keyStream.toString()+")#");
text.append("#(".getBytes("UTF-8")).append(keyStream.toByteArray()).append(")#".getBytes("UTF-8"));
}else{ //nested
others++;
text.append("#("+keyStream.toString()+")#");
text.append("#(".getBytes("UTF-8")).append(keyStream.toByteArray()).append(")#".getBytes("UTF-8"));
}
keyStream = new ByteArrayOutputStream(); //reset stream
continue;
@ -385,11 +394,11 @@ public final class httpTemplate {
if( (bb & 0xFF) == ':'){
if(currentPattern == whichPattern){ //found the pattern
pis2 = new PushbackInputStream(new ByteArrayInputStream(text.getBytes()));
structure.append("<"+key+" type=\"alternative\" which=\""+whichPattern+"\" found=\"0\">\n");
structure.append(writeTemplate(pis2, out, pattern, dflt, prefix + key + "_"));
structure.append("</"+key+">\n");
structure.append("<".getBytes("UTF-8")).append(key).append(" type=\"alternative\" which=\"".getBytes("UTF-8")).append(Integer.toString(whichPattern).getBytes("UTF-8")).append("\" found=\"0\">\n".getBytes("UTF-8"));
structure.append(writeTemplate(pis2, out, pattern, dflt, newPrefix(prefix,key)));
structure.append("</".getBytes("UTF-8")).append(key).append(">\n".getBytes("UTF-8"));
transferUntil(pis, keyStream, (new String("#(/"+key+")#")).getBytes());//to #(/key)#.
transferUntil(pis, keyStream, appendBytes("#(/".getBytes("UTF-8"),key,")#".getBytes("UTF-8"),null));//to #(/key)#.
found=true;
}
@ -397,7 +406,7 @@ public final class httpTemplate {
text.clear();
continue;
}else{
text.append(":");
text.append(":".getBytes("UTF-8"));
}
}
if(!found){
@ -412,11 +421,12 @@ public final class httpTemplate {
}else if( (bb & 0xFF) == lbr ){ //normal
if (transferUntil(pis, keyStream, pClose)) {
// pattern detected, write replacement
key = keyStream.toString();
replacement = replacePattern(prefix+key, pattern, dflt); //replace
structure.append("<"+key+" type=\"normal\">\n");
structure.append(new String(replacement));
structure.append("</"+key+">\n");
key = keyStream.toByteArray();
String patternKey = getPatternKey(prefix, key);
replacement = replacePattern(patternKey, pattern, dflt); //replace
structure.append("<".getBytes("UTF-8")).append(key).append(" type=\"normal\">\n".getBytes("UTF-8"));
structure.append(replacement);
structure.append("</".getBytes("UTF-8")).append(key).append(">\n".getBytes("UTF-8"));
/* DEBUG
try{
@ -430,25 +440,29 @@ public final class httpTemplate {
} else {
// inconsistency, simply finalize this
serverFileUtils.copy(pis, out);
return structure.toString();
return structure.getBytes();
}
}else if( (bb & 0xFF) == ps){ //include
String include = "";
String line = "";
serverByteBuffer include = new serverByteBuffer();
keyStream = new ByteArrayOutputStream(); //reset stream
if(transferUntil(pis, keyStream, iClose)){
String filename = keyStream.toString();
if(filename.startsWith( Character.toString((char)lbr) ) && filename.endsWith( Character.toString((char)rbr) )){ //simple pattern for filename
filename= new String(replacePattern( prefix + filename.substring(1, filename.length()-1), pattern, dflt));
}
if (!filename.equals("") && !java.util.Arrays.equals(filename.getBytes(), dflt)) {
byte[] filename = keyStream.toByteArray();
//if(filename.startsWith( Character.toString((char)lbr) ) && filename.endsWith( Character.toString((char)rbr) )){ //simple pattern for filename
if((filename[0] == lbr) && (filename[filename.length-1] == rbr)){ //simple pattern for filename
byte[] newFilename = new byte[filename.length-2];
System.arraycopy(filename, 1, newFilename, 0, newFilename.length);
String patternkey = getPatternKey(prefix, newFilename);
filename= replacePattern(patternkey, pattern, dflt);
}
if (filename.length > 0 && !java.util.Arrays.equals(filename, dflt)) {
BufferedReader br = null;
try{
//br = new BufferedReader(new InputStreamReader(new FileInputStream( filename ))); //Simple Include
br = new BufferedReader( new InputStreamReader(new FileInputStream( httpdFileHandler.getLocalizedFile(filename) )) ); //YaCy (with Locales)
br = new BufferedReader( new InputStreamReader(new FileInputStream( httpdFileHandler.getLocalizedFile(new String(filename,"UTF-8"))),"UTF-8") ); //YaCy (with Locales)
//Read the Include
String line = "";
while( (line = br.readLine()) != null ){
include+=line+de.anomic.server.serverCore.crlfString;
include.append(line.getBytes("UTF-8")).append(de.anomic.server.serverCore.crlfString.getBytes("UTF-8"));
}
}catch(IOException e){
//file not found?
@ -457,9 +471,9 @@ public final class httpTemplate {
if (br!=null) try{br.close(); br=null;}catch(Exception e){}
}
PushbackInputStream pis2 = new PushbackInputStream(new ByteArrayInputStream(include.getBytes()));
structure.append("<fileinclude file=\""+filename+">\n");
structure.append("<fileinclude file=\"".getBytes("UTF-8")).append(filename).append(">\n".getBytes("UTF-8"));
structure.append(writeTemplate(pis2, out, pattern, dflt, prefix));
structure.append("</fileinclude>\n");
structure.append("</fileinclude>\n".getBytes("UTF-8"));
}
}
}else{ //no match, but a single hash (output # + bb)
@ -470,7 +484,7 @@ public final class httpTemplate {
}
}
//System.out.println(structure.toString()); //DEBUG
return structure.toString();
return structure.getBytes();
}
public static byte[] replacePattern(String key, Hashtable pattern, byte dflt[]) {
@ -531,4 +545,45 @@ public final class httpTemplate {
return result;
}
public static byte[] newPrefix(byte[] oldPrefix, byte[] key) {
serverByteBuffer newPrefix = new serverByteBuffer();
newPrefix.append(oldPrefix)
.append(key)
.append("_".getBytes());
return newPrefix.getBytes();
}
public static byte[] newPrefix(byte[] oldPrefix, byte[] multi_key, int i) {
serverByteBuffer newPrefix = new serverByteBuffer();
try {
newPrefix.append(oldPrefix)
.append(multi_key)
.append("_".getBytes())
.append(Integer.toString(i).getBytes("UTF-8"))
.append("_".getBytes());
} catch (UnsupportedEncodingException e) {}
return newPrefix.getBytes();
}
public static String getPatternKey(byte[] prefix, byte[] key) {
serverByteBuffer patternKey = new serverByteBuffer();
patternKey.append(prefix)
.append(key);
try {
return new String(patternKey.getBytes(),"UTF-8");
} catch (UnsupportedEncodingException e) {
return null;
}
}
public static byte[] appendBytes(byte[] b1, byte[] b2, byte[] b3, byte[] b4) {
serverByteBuffer byteArray = new serverByteBuffer();
byteArray.append(b1)
.append(b2);
if (b3 != null) byteArray.append(b3);
if (b4 != null) byteArray.append(b4);
return byteArray.getBytes();
}
}

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