tag_changlog_gen.sh

#!/bin/bash
#
# For Android Police
# From KhasMek
# I love you guys
#
#  To run chmod a+x, move to the topdir of and AOSP build tree and execute
#  ./tag_changelog_gen.sh "old tag label" "new tag label"
# example: ./tag_changelog_gen.sh android-4.1.2_r1 android-4.2_r1

cdate=`date +"%m_%d_%Y"`
rdir=`pwd`
old_tag="$1"
new_tag="$2"

# Find the directories to log
find $rdir -name .git | sed 's/\/.git//g' | sed 'N;$!P;$!D;$d' | while read line
do
    cd $line
    # Test to see if the repo needs to have a changelog written.
    log=$(git log --pretty="%an - %s" --no-merges "$old_tag".."$new_tag")
    project=$(git remote -v | head -n1 | awk '{print $2}' | sed 's~http[s]*://android.googlesource.com~~g')
    if [ -z "$log" ]; then
        echo "Nothing updated on $project, skipping"
    else
        # Write the changelog
        echo "Project name: $project" >> "$rdir"/Changelog_"$old_tag"_"$new_tag".txt
        echo "$log" | while read line
        do
             echo "  •$line" >> "$rdir"/Changelog_"$old_tag"_"$new_tag".txt
        done
        echo "" >> "$rdir"/Changelog_"$old_tag"_"$new_tag".txt
    fi
done

exit 0