feat: add notice for old java and command for installation (#82)

* docs: java 8

* feat: add info and check of java version

* chore: command to finish install on linux

* wip: update script

* chore: message

* docs: license

* fix: java version

LICENSE.md

@@ -0,0 +1,7 @@
+Copyright 2017 Sourcerer, Inc. https://sourcerer.io
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

@@ -17,7 +17,7 @@ Prerequirements
 
 * Sourcerer alpha/beta access
 * Linux or macOS
-* Java Platform ([JRE](http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html) for Linux or [JDK](http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html) for macOS)
+* Java 8+ Platform ([JRE](http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html) for Linux or [JDK](http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html) for macOS)
 * Git repositories with master branch with at least one commit
 
 Install/uninstall

src/install/install

@@ -1,8 +1,8 @@
 # Copyright 2017 Sourcerer, Inc. All Rights Reserved.
-#
+# License: MIT, https://github.com/sourcerer-io/sourcerer-app/blob/master/LICENSE.md
+# Source code: https://github.com/sourcerer-io
 
 echo "Installing sourcerer app.."
-
 SERVER=$SERVER_EXT
 DOWNLOAD_URL=$SERVER/app/download
 SCRIPT_DIR=$HOME/.sourcerer
@@ -21,6 +21,9 @@ mkdir -p $JAR_DIR
 curl -s $DOWNLOAD_URL > $JAR_DIR/sourcerer.jar
 
 cat <<EOF > $SCRIPT_DIR/sourcerer
+# Copyright 2017 Sourcerer, Inc. All Rights Reserved.
+# License: MIT, https://github.com/sourcerer-io/sourcerer-app/blob/master/LICENSE.md
+# Source code: https://github.com/sourcerer-io
 
 if [ "\$1" = "--uninstall" ] ; then
   read -p "The script will uninstall sourcerer app. Proceed? [Y/n] " yesno < /dev/tty
@@ -37,20 +40,31 @@ if [ "\$1" = "--uninstall" ] ; then
   exit
 fi
 
-if ! which java > /dev/null ; then
+VERSION=0
+if which java > /dev/null ; then
+	VERSION_STR=\$(java -version 2>&1 | awk -F '"' '/version/ {print \$2}')
+	if [[ "\$VERSION_STR" > "9." ]]; then  # Format: 9.0.1
+	    VERSION=9
+	elif [[ "\$VERSION_STR" > "1.8." ]]; then  # Format: 1.8.1
+	    VERSION=8
+	else
+	    echo "Installed version of Java is not supported."
+	fi
+fi
+
+if [ \$VERSION = 0 ] ; then
   if [ `uname` = "Darwin" ] ; then
-    echo "Sourcerer requires JDK installed on the system. You can download it from here:"
+    echo "Sourcerer requires JDK 8+ installed on the system. You can download it from:"
     echo "http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html"
   else
-    echo "Sourcerer requires JRE installed on the system. You can download it from here:"
+    echo "Sourcerer requires JRE 8+ installed on the system. You can download it from:"
     echo "http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html"
   fi
   exit 1
 fi
 
 # Java 9 requires additional parameters.
-version=$(java -version 2>&1 | awk -F '"' '/version/ {print $2}')
-if [[ "$version" > "9." ]]; then  # Version example for Java 9: 9.0.1
+if [ \$VERSION = 9 ] ; then
   java --add-modules java.activation --add-opens java.base/java.nio=ALL-UNNAMED -jar $JAR_DIR/sourcerer.jar "\$@"
 else
   java -jar $JAR_DIR/sourcerer.jar "\$@"
@@ -59,13 +73,14 @@ EOF
 
 chmod +x $SCRIPT_DIR/sourcerer
 
-
 {
   rm -f /usr/local/bin/sourcerer 2> /dev/null &&
   ln -s $SCRIPT_DIR/sourcerer /usr/local/bin/sourcerer 2> /dev/null &&
-  echo "Done!" &&
-  echo "Run sourcerer to start hashing your repos!"
+  echo 'Done!' &&
+  echo 'Run sourcerer to start hashing your repos!'
 } || {
-  echo 'We installed app to $HOME/.sourcerer/sourcerer.'
-  echo 'You can add it to $PATH or ln it to /usr/local/bin'
+  echo 'We installed app to ~/.sourcerer/sourcerer.'
+  echo 'You can add it to $PATH or run specified command to finish installation:'
+  echo "sudo ln -s $SCRIPT_DIR/sourcerer /usr/local/bin/sourcerer"
+  echo 'Then run sourcerer to start hashing your repos!'
 }