adding createRelease script

Author: yazgazan

createRelease.sh

@@ -0,0 +1,77 @@
+#!/usr/bin/env sh
+set -o pipefail -o nounset -o errexit -o errtrace
+
+# Find our .git directory
+ROOT_DIR="$(pwd)"
+while [ ! -d "${ROOT_DIR}/.git" ]; do
+
+    ROOT_DIR="$(dirname ${ROOT_DIR})"
+    if [ "x${ROOT_DIR}" == "x/" ]; then
+        echo "Cannot find .git directory, I use that as reference for the commands."
+        exit 1
+    fi
+done
+
+# Determine our projectname
+NAME="$(basename $(pwd))"
+
+# Checking if we have any tags to start with, the cid is Git's magical initial repo hash
+TAGS=$(git rev-list --tags --count 4b825dc642cb6eb9a060e54bf8d69288fbee4904)
+if [ ${TAGS} -eq 0 ];
+then
+	echo "No tags detected for ${ROOT_DIR}, please create a tag first!"
+	exit 1;
+fi
+
+# Figuring out what tag's we're on
+LATEST_TAG=$(git describe --tags $(git rev-list --tags --max-count=1 4b825dc642cb6eb9a060e54bf8d69288fbee4904))
+PREV_TAG=$(git tag --sort version:refname | tail -2 | head -1 || true)
+
+if [ "x${LATEST_TAG}" == "x" -a "x${PREV_TAG}" == "x" ];
+then
+    echo "No tag has been found?"
+    exit 1
+fi
+echo "Previous tag is: ${PREV_TAG}"
+echo "Building a release for tag: ${LATEST_TAG}"
+
+# Falling back to the first commit, if we only have one tag
+if [ "x${PREV_TAG}" == "x${LATEST_TAG}" ];
+then
+    PREV_TAG=$(git rev-list --max-parents=0 HEAD)
+fi
+
+echo 'Installing dependencies ...'
+# Dependencies
+go get -u github.com/c4milo/github-release
+go get -u github.com/mitchellh/gox
+
+# Cleanup
+rm -rf build dist && mkdir -p build dist
+
+# Build
+GOARM=6 gox -ldflags "-s -w -X main.Version=${LATEST_TAG}" \
+    -rebuild \
+    -output "build/{{.Dir}}-${LATEST_TAG}-{{.OS}}-{{.Arch}}/${NAME}" \
+	.
+
+# Archive
+HERE=$(pwd)
+BUILDDIR=${HERE}/build
+for DIR in $(ls build/);
+do
+    OUTDIR="${HERE}/dist"
+    OUTFILENAME="${DIR}.tar.gz"
+    OUTFILE="${OUTDIR}/${OUTFILENAME}"
+    cd ${BUILDDIR}/${DIR} && \
+        tar -czf ${OUTFILE} * && \
+    cd ${OUTDIR} && \
+        shasum -a 512 ${OUTFILENAME} > ${OUTFILE}.sha512
+done
+cd ${HERE}
+
+# Building the changelog
+DIFF_REF="${PREV_TAG}..${LATEST_TAG}"
+CHANGELOG="$(printf '# %s\n%s' 'Changelog' "$(git log ${DIFF_REF} --oneline --no-merges --reverse)")"
+echo "Building the changelog based on these two ref's: '${DIFF_REF}'"
+github-release yazgazan/${NAME} ${LATEST_TAG} "$(git rev-parse --abbrev-ref HEAD)" "${CHANGELOG}" 'dist/*';