#!/bin/bash

# gets all changed files since last git tag

# see https://gist.github.com/arnold-almeida/209795

unset GIT_DIR

cd .

# Get our info....

LATEST_TAG=$(git describe --tags --abbrev=0)

CURRENT_REVISION=$(git describe)

NUMBER_FILES_CHANGED=$(git diff --name-only HEAD $LATEST_TAG | wc -l)

#FILES_CHANGED=$(git diff --name-only HEAD $LATEST_TAG)

echo Current revision is at $CURRENT_REVISION for Tag: $LATEST_TAG

echo $NUMBER_FILES_CHANGED files have been changed

## Write this revision

echo "################################" > REVISION

echo "# $CURRENT_REVISION" >> REVISION

echo '# ' >> REVISION

echo "# $NUMBER_FILES_CHANGED files changed since last release $LATEST_TAG" >> REVISION

echo "################################" >> REVISION

echo ' ' >> REVISION

$(git diff --name-only HEAD $LATEST_TAG >> REVISION)

echo ' ' >> REVISION

## Append to revision history

cat REVISION >> REVISION.tmp

cat REVISION_HISTORY >> REVISION.tmp

mv REVISION.tmp REVISION_HISTORY

exit