Introduced attachments splitting

* Added possibility to limit Email size and splitting it to several parts.
* Fixed bug when several emails are processed at once.
* Version increased: 0.0.4 -> 0.1.0

README.md

@@ -468,8 +468,6 @@ TODO
 
 0. Add setting to delete emails into Trash folder instead of hard remove.
 0. Add additional filtering emails by sender.
-0. Fix bug when several emails are processed at once.
-0. Add possibility to limit Email size and splitting it to several parts.
 0. Setup ESW folder for data exchange, extend Config accordingly.
 0. Include daemonizing feature - to allow user start, stop and check status of
    service w/o additional complex scripts.

data/config-template.properties

@@ -157,3 +157,8 @@ email.recipients.to =
 # Optional extension for encrypted file.
 # Default value is ".enc"
 #email.attach.ext.enc =
+
+# Optional max size in megabytes of file attachment.
+# If file size is bigger, it will be split to several parts.
+# Default value is 5.
+#email.attach.max.size =

pom.xml

@@ -6,7 +6,7 @@
 
 	<groupId>org.exchange.git</groupId>
 	<artifactId>email-bridge</artifactId>
-	<version>0.0.4</version>
+	<version>0.1.0</version>
 	<packaging>jar</packaging>
 
 	<name>email-bridge</name>
@@ -23,6 +23,7 @@
 		<ews-java-api.version>2.0-SNAPSHOT</ews-java-api.version>
 		<argparse4j.version>0.5.0</argparse4j.version>
 		<commons-exec.version>1.3</commons-exec.version>
+		<zip4j.version>1.3.2</zip4j.version>
 		<slf4j.version>1.7.12</slf4j.version>
 		<junit.version>4.12</junit.version>
 	</properties>
@@ -107,6 +108,11 @@
 			<artifactId>commons-exec</artifactId>
 			<version>${commons-exec.version}</version>
 		</dependency>
+		<dependency>
+			<groupId>net.lingala.zip4j</groupId>
+			<artifactId>zip4j</artifactId>
+			<version>${zip4j.version}</version>
+		</dependency>
 
 		<dependency>
 			<groupId>org.slf4j</groupId>

src/main/java/org/mail/bridge/Config.java

@@ -80,6 +80,7 @@ public class Config {
 	private final boolean emailAttachGzip;
 	private final String emailAttachExtGzip;
 	private final String emailAttachExtEnc;
+	private final int emailAttachMaxSize;
 
 	public Config(String propertiesFileName) throws IOException {
 		Properties config = new Properties();
@@ -159,9 +160,11 @@ public Config(String propertiesFileName) throws IOException {
 		emailAttachGzip = !s.isEmpty() && Boolean.parseBoolean(s);
 
 		s = config.getProperty("email.attach.ext.gzip", "");
-		emailAttachExtGzip = s.isEmpty() ? ".gz" : s;
+		emailAttachExtGzip = checkExt(s.isEmpty() ? ".gz" : s);
 		s = config.getProperty("email.attach.ext.enc", "");
-		emailAttachExtEnc = s.isEmpty() ? ".enc" : s;
+		emailAttachExtEnc = checkExt(s.isEmpty() ? ".enc" : s);
+		s = config.getProperty("email.attach.max.size", "");
+		emailAttachMaxSize = s.isEmpty() ? 5 : Integer.parseInt(s);
 	}
 
 	public String getEwsEmail() {
@@ -284,6 +287,10 @@ public String getEmailAttachExtEnc() {
 		return emailAttachExtEnc;
 	}
 
+	public int getEmailAttachMaxSize() {
+		return emailAttachMaxSize;
+	}
+
 	public Map<String, String> asEnvironmentMap() {
 		Map<String, String> result = new HashMap<>();
 		result.put("EWS_EMAIL", ewsEmail);
@@ -316,9 +323,16 @@ public Map<String, String> asEnvironmentMap() {
 		result.put("EMAIL_ATTACH_GZIP", "" + emailAttachGzip);
 		result.put("EMAIL_ATTACH_EXT_GZIP", emailAttachExtGzip);
 		result.put("EMAIL_ATTACH_EXT_ENC", emailAttachExtEnc);
+		result.put("EMAIL_ATTACH_MAX_SIZE", "" + emailAttachMaxSize);
 		return result;
 	}
 
+	private String checkExt(String ext) throws IOException {
+		if (ext.matches("^\\.z\\d\\d$"))
+			throw new IOException(String.format("Extension '%s' is reserved for inner usage", ext));
+		return ext;
+	}
+
 	@Override
 	public String toString() {
 		return "Config {" +
@@ -352,6 +366,7 @@ public String toString() {
 				",\n\temailAttachGzip=" + emailAttachGzip +
 				",\n\temailAttachExtGzip='" + emailAttachExtGzip + '\'' +
 				",\n\temailAttachExtEnc='" + emailAttachExtEnc + '\'' +
+				",\n\temailAttachMaxSize=" + emailAttachMaxSize +
 				'}';
 	}
 }