For those times you need to edit a jar file which has only 1 XML file with the same name as the jar file (minus the extension), and you just don't want to extract the damn file to access 1 file. Use 'vijar' to simplify your life.

README.md

jarjar

Usage

jarjar <executable> <path-to-jar-file>

Example

Using VIM:

jarjar vim /tmp/path/to/jar/content.jar:src/config.xml

vijar

Usage

vijar <path-to-jar-file>

Example

Using Relative Paths:

vijar ./content.jar

Using Absolute Paths:

vijar /tmp/path/to/repository/artifacts.jar

jarjar.sh

# jarjar
# ------
# jarjar is a bash utility for working with individual files inside a jar file
# without having to deal with unzipping a file, and deleting the unzipped directory.
function jarjar {
    
    # determine the name of the xml file name
    executable=$1;
    jar_name=$2;
    if [ "$jar_name" -eq "" ]; then
      echo "Usage:";
      echo "    REQUIRED | $0 <executable> <path-to-jar-file>";
      echo "    OPTIONAL | $0 <executable> <path-to-jar-file>:<path-to-file-inside-jar>";
    else
      jar_name=$2;
      jar_name_length=${#jar_name};

      if [[ ${jar_name} != *":"* ]]; then
        substring_offset=0;
        substring_length=$(expr $jar_name_length - 4);
        internal_path="${jar_name:0:$substring_length}.xml";
      else
        internal_path_start=$(awk -v a="$jar_name" -v b=":" 'BEGIN{print index(a,b)}');
        internal_path_end=$(expr $jar_name_length - $internal_path_start);
        internal_path=${jar_name:$internal_path_start:$internal_path_end};
        jar_name=${jar_name:0:$(expr $internal_path_start - 1)}

        echo "internal_path_start: ${internal_path_start}"
        echo "internal_path_end: ${internal_path_end}"
        echo "internal_path: ${internal_path}"
      fi
      echo "INTERNAL PATH: ${internal_path}"

      # determine the temp path to extract this jar to
      temp_dir=$(mktemp -d);
      exc unzip "$jar_name" -d $temp_dir
      path_to_temp_xml="$temp_dir/$internal_path";

      # edit the file
      exc eval $executable $path_to_temp_xml;
      ls -lah $(dirname $path_to_temp_xml)
      ls -lah $path_to_temp_xml;

      # delete the temp dir
      rm -rf $temp_dir;
    fi
}

vijar.sh

# vijar
# -----
# vijar extracts a jar file that contains that contains a file inside with the
# same file name with a .xml file
function vijar {
    path_to_jar=$1;
    jarjar vim $path_to_jar
}