Now give error if code is too big for sketch; maximum size determined by upload.maximum_size preference.

app/Sizer.java

@@ -0,0 +1,95 @@
+/* -*- mode: jde; c-basic-offset: 2; indent-tabs-mode: nil -*- */
+
+/*
+  Sizer - computes the size of a .hex file
+  Part of the Arduino project - http://www.arduino.cc/
+
+  Copyright (c) 2006 David A. Mellis
+
+  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
+  
+  $Id$
+*/
+
+package processing.app;
+import java.io.*;
+import java.util.*;
+
+public class Sizer implements MessageConsumer {
+  private String buildPath, sketchName;
+  private String firstLine;
+  private long size;
+  private RunnerException exception;
+
+  public Sizer(String buildPath, String sketchName) {
+    this.buildPath = buildPath;
+    this.sketchName = sketchName;
+  }
+  
+  public long computeSize() throws RunnerException {
+    String userdir = System.getProperty("user.dir") + File.separator;
+    String commandSize[] = new String[] {
+      ((!Base.isMacOS()) ? "tools/avr/bin/avr-size" :
+        userdir + "tools/avr/bin/avr-size"),
+      " "
+    };
+    
+    commandSize[1] = buildPath + File.separator + sketchName + ".hex";
+
+    try {
+      exception = null;
+      size = -1;
+      firstLine = null;
+      Process process = Runtime.getRuntime().exec(commandSize);
+      new MessageSiphon(process.getInputStream(), this);
+      new MessageSiphon(process.getErrorStream(), this);
+      boolean running = true;
+      while(running) {
+        try {
+          process.waitFor();
+          running = false;
+        } catch (InterruptedException intExc) { }
+      }
+    } catch (Exception e) {
+      exception = new RunnerException(e);
+    }
+    
+    if (exception != null)
+      throw exception;
+      
+    if (size == -1)
+      throw new RunnerException(firstLine);
+      
+    return size;
+  }
+  
+  public void message(String s) {
+    if (firstLine == null)
+      firstLine = s;
+    else {
+      StringTokenizer st = new StringTokenizer(s, " ");
+      try {
+        st.nextToken();
+        st.nextToken();
+        st.nextToken();
+        size = (new Integer(st.nextToken().trim())).longValue();
+      } catch (NoSuchElementException e) {
+        exception = new RunnerException(e);
+      } catch (NumberFormatException e) {
+        exception = new RunnerException(e);
+      }
+    }
+  }
+}

app/Sketch.java

@@ -1547,6 +1547,24 @@ public class Sketch {
     //System.out.println("success = " + success + " ... " + primaryClassName);
     return success ? primaryClassName : null;
   }
+  
+  protected void size(String buildPath, String suggestedClassName)
+    throws RunnerException {
+    long size = 0;
+    Sizer sizer = new Sizer(buildPath, suggestedClassName);
+    try {
+      size = sizer.computeSize();
+      System.out.println("Binary sketch size: " + size + " bytes (of a " +
+        Preferences.get("upload.maximum_size") + " byte maximum)");      
+    } catch (RunnerException e) {
+      System.err.println("Couldn't determine program size: " + e.getMessage());
+    }
+
+    if (size > Preferences.getInteger("upload.maximum_size"))
+      throw new RunnerException(
+        "Sketch too big; try deleting code, removing floats, or see " +
+        "http://www.arduino.cc/en/Main/FAQ for more advice.");
+  }
 
   protected String upload(String buildPath, String suggestedClassName)
     throws RunnerException {
@@ -1628,6 +1646,7 @@ public class Sketch {
 
     // build the sketch
     String foundName = build(target, appletFolder.getPath(), name);
+    size(appletFolder.getPath(), name);
     foundName = upload(appletFolder.getPath(), name);
     // (already reported) error during export, exit this function
     if (foundName == null) return false;