Handle tabs like 4 spaces in web console, patch by Martin Grajcar

h2/src/docsrc/html/changelog.html

@@ -21,6 +21,7 @@ Change Log
     (PageStore only; the MVStore already used 4096).
 </li><li>Auto-scale MAX_MEMORY_ROWS and CACHE_SIZE settings by the amount of available RAM. Gives a better
     out of box experience for people with more powerful machines.
+</li><li>Handle tabs like 4 spaces in web console, patch by Martin Grajcar
 </li></ul>
 
 <h2>Version 1.4.180 Beta (2014-07-13)</h2>

h2/src/main/org/h2/server/web/PageParser.java

@@ -16,6 +16,8 @@ import org.h2.util.New;
  * This class is used by the H2 Console.
  */
 public class PageParser {
+    private static final int TAB_WIDTH = 4;
+
     private final String page;
     private int pos;
     private final Map<String, Object> settings;
@@ -245,12 +247,15 @@ public class PageParser {
         boolean convertSpace = true;
         for (int i = 0; i < s.length(); i++) {
             char c = s.charAt(i);
-            if (c == ' ') {
-                if (convertSpace && convertBreakAndSpace) {
-                    buff.append("&nbsp;");
-                } else {
-                    buff.append(' ');
-                    convertSpace = true;
+            if (c == ' ' || c == '\t') {
+                // convert tabs into spaces
+                for (int j = 0; j < (c == ' ' ? 1 : TAB_WIDTH); j++) {
+                    if (convertSpace && convertBreakAndSpace) {
+                        buff.append("&nbsp;");
+                    } else {
+                        buff.append(' ');
+                        convertSpace = true;
+                    }
                 }
                 continue;
             }