Venice now groks Cascading StyleSheets; the stylesheet is generated by a

special servlet and cached at runtime; various JSP pages and formatter classes
have been updated to respect the stylesheet settings

src/com/silverwrist/util/AnyCharMatcher.java

@@ -0,0 +1,86 @@
+/*
+ * The contents of this file are subject to the Mozilla Public License Version 1.1
+ * (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.mozilla.org/MPL/>.
+ * 
+ * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
+ * WARRANTY OF ANY KIND, either express or implied. See the License for the specific
+ * language governing rights and limitations under the License.
+ * 
+ * The Original Code is the Venice Web Communities System.
+ * 
+ * The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
+ * for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
+ * Copyright (C) 2001 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
+ * 
+ * Contributor(s): 
+ */
+package com.silverwrist.util;
+
+public final class AnyCharMatcher
+{
+  /*--------------------------------------------------------------------------------
+   * Attributes
+   *--------------------------------------------------------------------------------
+   */
+
+  private char[] charset;
+  private int[] locs;
+
+  /*--------------------------------------------------------------------------------
+   * Constructors
+   *--------------------------------------------------------------------------------
+   */
+
+  public AnyCharMatcher(char[] charset)
+  {
+    this.charset = charset;
+    this.locs = new int[charset.length];
+
+  } // end constructor
+
+  public AnyCharMatcher(String charset)
+  {
+    this.charset = charset.toCharArray();
+    this.locs = new int[charset.length()];
+
+  } // end constructor
+
+  /*--------------------------------------------------------------------------------
+   * External operations
+   *--------------------------------------------------------------------------------
+   */
+
+  public final int get(String str)
+  {
+    int numindexes = 0;
+    int i;
+    for (i=0; i<charset.length; i++)
+    { // locate the index of the first HTML character
+      int tmp = str.indexOf(charset[i]);
+      if (tmp>=0)
+	locs[numindexes++] = tmp;
+
+    } // end for
+
+    if (numindexes==0)
+      return -1;  // no characters found
+    else if (numindexes==1)
+      return locs[0];  // only one found
+
+    int rc = locs[0];
+    for (i=1; i<numindexes; i++)
+    { // this loop determines the lowest possible return value
+      if (rc==0)
+	return 0;  // can't get any lower!
+      if (locs[i]<rc)
+	rc = locs[i];  // this is now the lowest
+
+    } // end for
+
+    return rc;
+
+  } // end get
+
+} // end class AnyCharMatcher
+

src/com/silverwrist/util/IOUtil.java

@@ -0,0 +1,175 @@
+/*
+ * The contents of this file are subject to the Mozilla Public License Version 1.1
+ * (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.mozilla.org/MPL/>.
+ * 
+ * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
+ * WARRANTY OF ANY KIND, either express or implied. See the License for the specific
+ * language governing rights and limitations under the License.
+ * 
+ * The Original Code is the Venice Web Communities System.
+ * 
+ * The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
+ * for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
+ * Copyright (C) 2001 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
+ * 
+ * Contributor(s): 
+ */
+package com.silverwrist.util;
+
+import java.io.*;
+
+/* Some concepts in here borrowed from Apache Jakarta Avalon Excalibur 4.0 */
+
+public class IOUtil
+{
+  /*--------------------------------------------------------------------------------
+   * Static data members
+   *--------------------------------------------------------------------------------
+   */
+
+  public static int DEFAULT_BUFSIZE = 4096;
+
+  /*--------------------------------------------------------------------------------
+   * External static operations
+   *--------------------------------------------------------------------------------
+   */
+
+  public static void shutdown(InputStream stm)
+  {
+    try
+    { // close the stream
+      stm.close();
+
+    } // end try
+    catch (IOException e)
+    { // throw away the exception
+    } // end catch
+
+  } // end shutdown
+
+  public static void shutdown(OutputStream stm)
+  {
+    try
+    { // close the stream
+      stm.close();
+
+    } // end try
+    catch (IOException e)
+    { // throw away the exception
+    } // end catch
+
+  } // end shutdown
+
+  public static void shutdown(Reader rdr)
+  {
+    try
+    { // close the stream
+      rdr.close();
+
+    } // end try
+    catch (IOException e)
+    { // throw away the exception
+    } // end catch
+
+  } // end shutdown
+
+  public static void shutdown(Writer wr)
+  {
+    try
+    { // close the stream
+      wr.close();
+
+    } // end try
+    catch (IOException e)
+    { // throw away the exception
+    } // end catch
+
+  } // end shutdown
+
+  public static void copy(InputStream input, OutputStream output, int bufsize) throws IOException
+  {
+    byte[] buffer = new byte[bufsize];
+    int rd = input.read(buffer);
+    while (rd>=0)
+    { // simple read-write loop to shove data out the door
+      if (rd>0)
+	output.write(buffer,0,rd);
+      rd = input.read(buffer);
+
+    } // end while
+
+  } // end copy
+
+  public static void copy(InputStream input, OutputStream output) throws IOException
+  {
+    copy(input,output,DEFAULT_BUFSIZE);
+
+  } // end copy
+
+  public static void copy(Reader input, Writer output, int bufsize) throws IOException
+  {
+    char[] buffer = new char[bufsize];
+    int rd = input.read(buffer);
+    while (rd>=0)
+    { // simple read-write loop to shove data out the door
+      if (rd>0)
+	output.write(buffer,0,rd);
+      rd = input.read(buffer);
+
+    } // end while
+
+  } // end copy
+
+  public static void copy(Reader input, Writer output) throws IOException
+  {
+    copy(input,output,DEFAULT_BUFSIZE);
+
+  } // end copy
+
+  public static StringBuffer load(Reader input, int bufsize) throws IOException
+  {
+    StringWriter wr = new StringWriter();
+    try
+    { // copy from reader to StringWriter
+      copy(input,wr,bufsize);
+      return wr.getBuffer();
+
+    } // end try
+    finally
+    { // make sure and close the StringWriter before we go
+      shutdown(wr);
+
+    } // end finally
+
+  } // end load
+
+  public static StringBuffer load(Reader input) throws IOException
+  {
+    return load(input,DEFAULT_BUFSIZE);
+
+  } // end load
+
+  public static StringBuffer load(File file, int bufsize) throws IOException
+  {
+    FileReader rdr = new FileReader(file);
+    try
+    { // load from the string reader
+      return load(rdr,bufsize);
+
+    } // end try
+    finally
+    { // make sure and close the reader before we go
+      shutdown(rdr);
+
+    } // end finally
+
+  } // end load
+
+  public static StringBuffer load(File file) throws IOException
+  {
+    return load(file,DEFAULT_BUFSIZE);
+
+  } // end load
+
+} // end class IOUtil

src/com/silverwrist/util/StringUtil.java

@@ -7,7 +7,7 @@
  * WARRANTY OF ANY KIND, either express or implied. See the License for the specific
  * language governing rights and limitations under the License.
  * 
- * The Original Code is the Venice Web Community System.
+ * The Original Code is the Venice Web Communities System.
  * 
  * The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
  * for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
@@ -17,8 +17,24 @@
  */
 package com.silverwrist.util;
 
+import java.util.*;
+
 public class StringUtil
 {
+  /*--------------------------------------------------------------------------------
+   * Static data members
+   *--------------------------------------------------------------------------------
+   */
+
+  private static final String VAR_START = "${";
+  private static final String VAR_END = "}";
+  private static final char[] HTML_ENCODE_CHARS = { '"', '&', '<', '>' };
+
+  /*--------------------------------------------------------------------------------
+   * External static operations
+   *--------------------------------------------------------------------------------
+   */
+
   public static String encodeStringSQL(String str)
   {
     if (str==null)
@@ -46,10 +62,16 @@ public class StringUtil
   {
     if (str==null)
       return null;
+    AnyCharMatcher nhc = new AnyCharMatcher(HTML_ENCODE_CHARS);
+    int ndx = nhc.get(str);
+    if (ndx<0)
+      return str;   // trivial short-circuit case
     StringBuffer buf = new StringBuffer();
-    for (int i=0; i<str.length(); i++)
-    { // loop through the string encoding each character in turn
-      switch (str.charAt(i))
+    while (ndx>=0)
+    { // append the matched "head" and then the encoded character
+      if (ndx>0)
+	buf.append(str.substring(0,ndx));
+      switch (str.charAt(ndx++))
       {
 	case '"':
 	  buf.append("&quot;");
@@ -67,14 +89,16 @@ public class StringUtil
 	  buf.append("&gt;");
 	  break;
 
-	default:
-	  buf.append(str.charAt(i));
-	  break;
-
       } // end switch
 
-    } // end for
+      if (ndx==str.length())
+	return buf.toString();  // munched the entire string - all done!
+      str = str.substring(ndx);
+      ndx = nhc.get(str);
 
+    } // end while
+
+    buf.append(str);  // append the unmatched tail
     return buf.toString();
 
   } // end encodeHTML
@@ -101,22 +125,55 @@ public class StringUtil
       // break off the tail end
       ndx += find.length();
       if (ndx==work.length())
-	work = null;
-      else
-	work = work.substring(ndx);
-
-      // do the next find
-      if (work!=null)
-	ndx = work.indexOf(find);
-      else
-	ndx = -1;
+	return b.toString();   // entire string munched - we're done!
+      work = work.substring(ndx);
+      ndx = work.indexOf(find);
 
     } // end while
 
-    if (work!=null)
-      b.append(work);
+    // append the unmatched "tail" of the work string and then return result
+    b.append(work);
     return b.toString();
 
   } // end replaceAllInstances
 
+  public static String replaceAllVariables(String base, Map vars)
+  {
+    String work = base;
+    boolean did_replace, retest;
+
+    retest = true;
+    do
+    { // main loop for replacing all variables
+      did_replace = false;
+      Iterator it = vars.keySet().iterator();
+      while (it.hasNext())
+      { // variable start is there...
+	if (retest)
+	{ // only perform this test on the first iteration and after we know we've replaced a variable
+	  if (work.indexOf(VAR_START)<0)
+	    return work; // no more variables in text - all done!
+	  retest = false;
+
+	} // end if
+
+	// get variable name and see if it's present
+	String vname = it.next().toString();
+	if (work.indexOf(VAR_START + vname + VAR_END)>=0)
+	{ // OK, this variable is in place
+	  work = replaceAllInstances(work,VAR_START + vname + VAR_END,vars.get(vname).toString());
+	  did_replace = true;
+	  retest = true;
+
+	} // end if
+
+      } // end while
+
+    } while (did_replace);  // end do
+
+    return work;  // all done!
+
+  } // end replaceAllVariables
+
 } // end class StringUtil
+