Move JsonUtil class to commons module

Add ability to deserealize Json from stream
Add zip functionality

PDWEB-61

Author: Egor Martsynkovsky

.gitattributes

@@ -20,6 +20,7 @@
 *.xht text eol=lf
 *.xhtml text eol=lf
 *.xml text eol=lf
+*.json text eol=lf
 port-hash text eol=lf
 
 # Declare files that will always have CRLF line endings on checkout.

commons/pom.xml

@@ -10,7 +10,18 @@
   <name>iText 7 - commons</name>
   <url>https://itextpdf.com/</url>
 
+  <properties>
+    <jackson.core.version>2.13.2</jackson.core.version>
+  </properties>
+
   <dependencies>
+    <dependency>
+      <groupId>com.fasterxml.jackson.core</groupId>
+      <artifactId>jackson-databind</artifactId>
+      <version>${jackson.core.version}</version>
+      <optional>true</optional>
+    </dependency>
+
     <dependency>
       <groupId>com.itextpdf</groupId>
       <artifactId>pdftest</artifactId>

commons/src/main/java/com/itextpdf/commons/exceptions/CommonsExceptionMessageConstant.java

@@ -36,15 +36,28 @@ public final class CommonsExceptionMessageConstant {
      */
     public static final String ELEMENT_ALREADY_HAS_IDENTIFIER = "Element already has sequence id: {0}, new id {1} " +
             "will be ignored";
+
+    public static final String FILE_SHOULD_EXIST = "File should exist.";
+    public static final String FILE_NAME_ALREADY_EXIST = "File name: {0}, already exists.";
+    public static final String FILE_NAME_CAN_NOT_BE_NULL = "File name can not be null.";
+    public static final String FILE_NAME_SHOULD_BE_UNIQUE = "File name should be unique.";
     public static final String INVALID_USAGE_CONFIGURATION_FORBIDDEN = "Invalid usage of placeholder \"{0}\": any "
             + "configuration is forbidden";
-    public static final String INVALID_USAGE_FORMAT_REQUIRED = "Invalid usage of placeholder \"{0}\": format is required";
-    public static final String NO_EVENTS_WERE_REGISTERED_FOR_THE_DOCUMENT = "No events were registered for the document!";
+    public static final String INVALID_USAGE_FORMAT_REQUIRED = "Invalid usage of placeholder \"{0}\": format is "
+            + "required";
+    public static final String JSON_OBJECT_CAN_NOT_BE_NULL = "Passed json object can not be null";
+    public static final String NO_EVENTS_WERE_REGISTERED_FOR_THE_DOCUMENT = "No events were registered for the "
+            + "document!";
     public static final String PATTERN_CONTAINS_OPEN_QUOTATION = "Pattern contains open quotation!";
     public static final String PATTERN_CONTAINS_UNEXPECTED_CHARACTER = "Pattern contains unexpected character {0}";
     public static final String PATTERN_CONTAINS_UNEXPECTED_COMPONENT = "Pattern contains unexpected component {0}";
     public static final String PRODUCT_NAME_CAN_NOT_BE_NULL = "Product name can not be null.";
+    public static final String STREAM_CAN_NOT_BE_NULL = "Passed stream can not be null";
     public static final String UNKNOWN_ITEXT_EXCEPTION = "Unknown ITextException.";
 
-    private CommonsExceptionMessageConstant(){}
+    public static final String ZIP_ENTRY_NOT_FOUND = "Zip entry not found for name: {0}";
+
+    private CommonsExceptionMessageConstant() {
+        // Empty constructor.
+    }
 }

commons/src/main/java/com/itextpdf/commons/logs/CommonsLogMessageConstant.java

@@ -57,6 +57,40 @@ public final class CommonsLogMessageConstant {
     public static final String INVALID_STATISTICS_NAME =
             "Statistics name {0} is invalid. Cannot find corresponding statistics aggregator.";
 
+    /**
+     * Message notifies that files archiving operation failed.
+     *
+     * <ul>
+     * <li>0th is a message of thrown exception;
+     * </ul>
+     */
+    public static final String LOCAL_FILE_COMPRESSION_FAILED = "Cannot archive files into zip. "
+            + "Exception message: {0}.";
+
+    /**
+     * Message notifies that some exception has been thrown during json deserialization from object.
+     * List of params:
+     *
+     * <ul>
+     * <li>0th is a class name of thrown exception;
+     * <li>1st is a message of thrown exception;
+     * </ul>
+     */
+    public static final String UNABLE_TO_DESERIALIZE_JSON =
+            "Unable to deserialize json. Exception {0} was thrown with the message: {1}.";
+
+    /**
+     * Message notifies that some exception has been thrown during json serialization to object.
+     * List of params:
+     *
+     * <ul>
+     * <li>0th is a class name of thrown exception;
+     * <li>1st is a message of thrown exception;
+     * </ul>
+     */
+    public static final String UNABLE_TO_SERIALIZE_OBJECT =
+            "Unable to serialize object. Exception {0} was thrown with the message: {1}.";
+
     /**
      * Message notifies that unknown placeholder was ignored during parsing of the producer line
      * format. List of params:
@@ -81,6 +115,6 @@ public final class CommonsLogMessageConstant {
                     + "Probably appropriate process fail";
 
     private CommonsLogMessageConstant() {
-        //Private constructor will prevent the instantiation of this class directly
+        // Private constructor will prevent the instantiation of this class directly.
     }
 }

commons/src/main/java/com/itextpdf/commons/utils/FileUtil.java

@@ -209,6 +209,10 @@ public static java.io.OutputStream wrapWithBufferedOutputStream(OutputStream out
         }
     }
 
+    public static File constructFileByDirectoryAndName(String directory, String fileName) {
+        return new File(directory, fileName);
+    }
+
     /**
      * Creates a temporary file at the provided path.
      *
@@ -235,6 +239,10 @@ public static InputStream getInputStreamForFile(String path) throws IOException
         return Files.newInputStream(Paths.get(path));
     }
 
+    public static OutputStream getFileOutputStream(String path) throws IOException {
+        return Files.newOutputStream(Paths.get(path));
+    }
+
     public static RandomAccessFile getRandomAccessFile(File tempFile) throws FileNotFoundException {
         return new RandomAccessFile(tempFile, "rw");
     }