temporary fix for "file name too long errors" REAndroid/APKEditor#15

src/main/java/com/reandroid/apk/ApkJsonDecoder.java

@@ -77,9 +77,17 @@ public class ApkJsonDecoder {
         jsonObject.write(file);
         addDecoded(path);
     }
+    // TODO: temporary fix
     private void writeRootFiles(File dir) throws IOException {
         for(InputSource inputSource:apkModule.getApkArchive().listInputSources()){
+            try{
                 writeRootFile(dir, inputSource);
+            }catch (IOException ex){
+                APKLogger logger = apkModule.getApkLogger();
+                if(logger!=null){
+                    logger.logMessage("ERROR: "+ex.getMessage());
+                }
+            }
         }
     }
     private void writeRootFile(File dir, InputSource inputSource) throws IOException {

src/main/java/com/reandroid/apk/ApkModuleXmlDecoder.java

@@ -279,7 +279,11 @@ import java.util.*;
         return element;
     }
     private String getPackageDirName(PackageBlock packageBlock){
-        return packageBlock.getIndex()+"-"+packageBlock.getName();
+        String name = ApkUtil.sanitizeForFileName(packageBlock.getName());
+        if(name==null){
+            name="package";
+        }
+        return packageBlock.getIndex()+"-"+name;
     }
     private void extractRootFiles(File outDir) throws IOException {
         logMessage("Extracting root files");
@@ -300,9 +304,14 @@ import java.util.*;
         if(!dir.exists()){
             dir.mkdirs();
         }
+        // TODO:Temporary fix
+        try{
             FileOutputStream outputStream=new FileOutputStream(file);
             inputSource.write(outputStream);
             outputStream.close();
+        }catch (IOException ex){
+            logMessage("ERROR: "+ex.getMessage());
+        }
     }
     private boolean containsDecodedPath(String path){
         return mDecodedPaths.contains(path);

src/main/java/com/reandroid/apk/ApkUtil.java

@@ -21,6 +21,53 @@ import java.io.File;
 import java.util.*;
 
 public class ApkUtil {
+    public static String sanitizeForFileName(String name){
+        if(name==null){
+            return null;
+        }
+        StringBuilder builder = new StringBuilder();
+        char[] chars = name.toCharArray();
+        boolean skipNext = true;
+        int length = 0;
+        int lengthMax = MAX_FILE_NAME_LENGTH;
+        for(int i=0;i<chars.length;i++){
+            if(length>=lengthMax){
+                break;
+            }
+            char ch = chars[i];
+            if(isGoodFileNameSymbol(ch)){
+                if(!skipNext){
+                    builder.append(ch);
+                    length++;
+                }
+                skipNext=true;
+                continue;
+            }
+            if(!isGoodFileNameChar(ch)){
+                skipNext = true;
+                continue;
+            }
+            builder.append(ch);
+            length++;
+            skipNext=false;
+        }
+        if(length==0){
+            return null;
+        }
+        return builder.toString();
+    }
+    private static boolean isGoodFileNameSymbol(char ch){
+        return ch == '.'
+                || ch == '+'
+                || ch == '-'
+                || ch == '_'
+                || ch == '#';
+    }
+    private static boolean isGoodFileNameChar(char ch){
+        return (ch >= '0' && ch <= '9')
+                || (ch >= 'A' && ch <= 'Z')
+                || (ch >= 'a' && ch <= 'z');
+    }
     public static int parseHex(String hex){
         long l=Long.decode(hex);
         return (int) l;
@@ -144,4 +191,6 @@ public class ApkUtil {
 
     public static final String TAG_STRING_ARRAY = "string-array";
     public static final String TAG_INTEGER_ARRAY = "integer-array";
+
+    private static final int MAX_FILE_NAME_LENGTH = 50;
 }