changelog_all.sh

changelog_all.sh

#! /bin/bash

SCRIPT=$0

COLOR_NC='\033[0m' # No Color
COLOR_LGREEN='\033[1;32m'
COLOR_GRAY='\033[1;30m'
COLOR_RED='\033[0;31m'
COLOR_CYAN='\033[0;36m'

logv() {
  [[ ! -z "$VERBOSE" ]] && >&2 echo -e "${COLOR_GRAY}$D: $@${COLOR_NC}"
  return 0
}

execv() {
  logv "$@"
  "$@"
}

usage() {
  echo "$0 <from> <to>
  Scan an entire directory of git repos, generating a changelog for each one.
  " && \
  grep " .)\ #" $0; exit 0;
}

while getopts ":hvms" arg; do
  case $arg in
    v) # Verbose mode - extra output
      VERBOSE=true
      FLAGS="$FLAGS -v"
      ;;
    m) # Markdown - format output in markdown
      MARKDOWN=true
      FLAGS="$FLAGS -m"
      ;;
    h | *) # Display help.
      usage
      exit 0
      ;;
  esac
done

shift $(($OPTIND - 1))

set -e

mains=("master" "main")

changelog_d() {
  git fetch origin 2>/dev/null
  [ $? -ne 0 ] && logv "Cannot fetch origin" && return -1;
  main=""
  for m in "${mains[@]}"; do
    if git rev-parse --quiet --verify "origin/$m" > /dev/null; then
      main="$m"
    fi
  done
  [[ -z "$main" ]] && logv "no main branch found" && return -1;

  TO='origin/develop'
  FROM=$(git merge-base origin/develop "origin/$main" 2>/dev/null)
  if [[ -z "$FROM" ]]; then
    logv "develop does not exist"
    FROM=$(execv heroku releases -r production 2>/dev/null | grep Deploy | awk '{ print $3 }' | head -n1)
    TO="origin/$main"
  fi

  FROM=$(git rev-parse --short "$FROM" 2> /dev/null)
  [ $? -ne 0 ] && logv "cannot determine prod sha1" && return -1
  
  CHANGELOG=$(changelog $FLAGS $FROM $TO)
  [[ -z "$CHANGELOG" ]] && logv "no changelog" && return -1

  if [[ -z "$MARKDOWN" ]]; then
    echo -e "${COLOR_LGREEN}$D${COLOR_NC}\n${CHANGELOG}"
  else
    echo -e "# $D\n#${CHANGELOG}"
  fi
}

for D in *; do
    if [ -d "${D}/.git" ]; then
      pushd ${D} > /dev/null
        changelog_d $@ || true
      popd > /dev/null
    fi
done