update textrenderer (#5641)

try to prevent null

forge-gui-mobile/src/forge/assets/TextRenderer.java

@@ -100,7 +100,11 @@ public class TextRenderer {
                 lastSpaceIdx = text.length();
                 nextSpaceIdx = boundary.next();
             }
+            try {
                 ch = fullText.charAt(i);
+            } catch (StringIndexOutOfBoundsException e) {
+                ch = Character.MIN_VALUE;
+            }
             switch (ch) {
             case '\r':
                 continue; //skip '\r' character
@@ -231,6 +235,7 @@ public class TextRenderer {
                     }
                 }
                 if (inKeywordCount > 0) {
+                    try {
                         inKeywordCount--;
                         if (inKeywordCount == 0 && text.length() > 0) {
                             String keyword, value;
@@ -238,14 +243,12 @@ public class TextRenderer {
                             if (text.charAt(0) == '/') {
                                 keyword = text.substring(1);
                                 value = null;
-                        }
-                        else {
+                            } else {
                                 int idx = text.indexOf(" ");
                                 if (idx != -1) {
                                     keyword = text.substring(0, idx);
                                     value = text.substring(idx + 1);
-                            }
-                            else {
+                                } else {
                                     keyword = text.toString();
                                     value = null;
                                 }
@@ -278,6 +281,7 @@ public class TextRenderer {
                                 continue; //skip '>' character
                             }
                         }
+                    } catch (Exception e) {}
                 }
                 break;
             case '(':
@@ -415,10 +419,12 @@ public class TextRenderer {
                             }
                         }
                         if (lastPieceIdx >= 0) {
+                            try {
                                 Piece lastPiece = pieces.get(lastPieceIdx);
                                 lineWidths.add(lastPiece.x + lastPiece.w);
                                 x = 0;
-                            for (int j = lastPieceIdx + 1; j < pieces.size(); j++) {
+                                int size = pieces.size();
+                                for (int j = lastPieceIdx + 1; j < size; j++) {
                                     Piece piece = pieces.get(j);
                                     piece.x = x;
                                     piece.y += lineHeight;
@@ -436,6 +442,9 @@ public class TextRenderer {
                                     }
                                     needClip = true;
                                 }
+                            } catch (Exception e) {
+                                //e.printStackTrace();
+                            }
                         } else {
                             if (font.canShrink()) {
                                 //try next font size down if out of space
@@ -483,7 +492,10 @@ public class TextRenderer {
 
     private void setProps(String text, FSkinFont skinFont, float w, float h, boolean wrap0) {
         boolean needUpdate = false;
-        if (!fullText.equals(text)) {
+        if (fullText == null) {
+            fullText = text;
+            needUpdate = true;
+        } else if (!fullText.equals(text)) {
             fullText = text;
             needUpdate = true;
         }
@@ -538,11 +550,13 @@ public class TextRenderer {
         if (needClip) { //prevent text flowing outside region if couldn't shrink it to fit
             g.startClip(x, y, w, h);
         }
+        try {
             if (height > totalHeight && centerVertically) {
                 y += (height - totalHeight) / 2;
             }
             float[] alignmentOffsets = new float[lineWidths.size()];
-        for (int i = 0; i < lineWidths.size(); i++) {
+            int size = lineWidths.size();
+            for (int i = 0; i < size; i++) {
                 switch (horzAlignment) {
                     case Align.left:
                         alignmentOffsets[i] = 0;
@@ -568,6 +582,9 @@ public class TextRenderer {
                 }
                 piece.draw(g, color, x + alignmentOffsets[piece.lineNum], y);
             }
+        } catch (Exception e) {
+            //e.printStackTrace();
+        }
         if (needClip) {
             g.endClip();
         }