Add bump_version.sh and tag.sh to support bumping versions and taggin…

…g through scripts. Update setup.py to include the semver package which is used by the bump_version.sh script.

bump_version.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+
+# bump_version.sh (show|major|minor|patch|prerelease|build)
+
+set -o nounset
+set -o errexit
+set -o pipefail
+
+VERSION_FILE=src/example/_version.py
+
+HELP_INFORMATION="bump_version.sh (show|major|minor|patch|prerelease|build|finalize)"
+
+old_version=$(sed -n "s/^__version__ = \"\(.*\)\"$/\1/p" $VERSION_FILE)
+
+if [ $# -ne 1 ]
+then
+   echo "$HELP_INFORMATION"
+else
+    case $1 in
+        major|minor|patch|prerelease|build)
+            new_version=$(python -c "import semver; print(semver.bump_$1('$old_version'))")
+            echo Changing version from "$old_version" to "$new_version"
+            tmp_file=/tmp/version.$$
+            sed "s/$old_version/$new_version/" $VERSION_FILE > $tmp_file
+            mv $tmp_file $VERSION_FILE
+            git add $VERSION_FILE
+            git commit -m"Bump version from $old_version to $new_version"
+            git push
+            ;;
+        finalize)
+            new_version=$(python -c "import semver; print(semver.finalize_version('$old_version'))")
+            echo Changing version from "$old_version" to "$new_version"
+            tmp_file=/tmp/version.$$
+            sed "s/$old_version/$new_version/" $VERSION_FILE > $tmp_file
+            mv $tmp_file $VERSION_FILE
+            git add $VERSION_FILE
+            git commit -m"Bump version from $old_version to $new_version"
+            git push
+            ;;
+        show)
+            echo "$old_version"
+            ;;
+        *)
+            echo "$HELP_INFORMATION"
+            ;;
+    esac
+fi

setup.py

@@ -69,7 +69,7 @@ def package_vars(version_file):
     package_data={"example": ["data/*.txt"]},
     py_modules=[splitext(basename(path))[0] for path in glob("src/*.py")],
     include_package_data=True,
-    install_requires=["docopt", "setuptools"],
+    install_requires=["docopt", "semver", "setuptools"],
     extras_require={
         "test": [
             "pre-commit",

tag.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+set -o nounset
+set -o errexit
+set -o pipefail
+
+version=$(./bump_version.sh show)
+
+git tag "v$version" && git push --tags