Sub Module Log

sublog.sh

#!/bin/bash 


# This function will parse out the gitModules file to extrac the list of sub module names
function getSubs () {
    git config --file=.gitmodules -l | cut -d '.' -f2 | sort -u | xargs    
}


# Get a list of all the sub modules
SUBS=$(getSubs) #$(git config --file=.gitmodules -l | cut -d '.' -f2 | sort -u | xargs)


function getSubLog {
    # This takes two paramaters a submodule name and an output variable to store the log in
    # You call with getSubLog sub_module result_var
    # https://www.linuxjournal.com/content/return-values-bash-functions
    
    sub=$1
    local __resultvar=$2
    local ret=''

    local sub_branch=$(git config --file=.gitmodules --get submodule.$sub.branch)
    local sub_url=$(git config --file=.gitmodules --get submodule.$sub.url)
    local sub_path=$(git config --file=.gitmodules --get submodule.$sub.path)


    local remote_sha=$(git ls-remote -q $sub_url $sub_branch | xargs | cut -d" " -f1)
    local local_sha=$(git submodule status $sub_path | tr + " " | tr - " " | xargs | cut -d" " -f1)
  

    if [ "$remote_sha" != "$local_sha" ]; then 
      pwd=$(pwd)
      cd $sub_path
      echo "*[ $sub : $sub_branch ]*"
      git fetch -q -p --all
      git log --pretty="tformat:* %s (%ae) _%h_"  $remote_sha...$local_sha
      cd $pwd  
    fi;
    

}

# Add a blank link for kicks
echo ""
for sub in $SUBS; do
    getSubLog $sub
done