Add setup.py version plugin (#37)

* Updated documentation

* Ranamed plugin to ensure execution order

* Fixed sed regex

* Added comment about non-extended regex syntax

Author: fernandocollova

PLUGINS.md

@@ -76,6 +76,12 @@ The [`package.json`] file is used by [NPM], typically for [Node.js] applications
 }
 ```
 
+### Python `setup.py` - [`setuppy_update.sh`]
+
+This plugin makes sure you never forget to update your package version.
+
+When active, it will search for a setup.py file in the root of the project, and change the `version` argument passed to the setup class to the version being tagged. Then, it will commit it with a "Updated setup.py version" message.
+
 ## Contributing
 
 A plugin can be any executable file stored in `.git-semver/plugins/`.

plugins/10-setuppy_update.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+
+function run() {
+
+    local version_new="$1"
+    local git_root="$5"
+
+    local setuppy_path="${git_root}/setup.py"
+
+    if [ ! -e "${setuppy_path}" ]
+    then
+        echo "Could not find setup.py on the project root."
+        return 112
+    fi
+
+    tmpfile=$(mktemp)
+    # Extended regexs are purposely avoided for Mac OS and Free BSD compatbility.
+    sed "s/version[[:blank:]]*=[[:blank:]]*[\",'][0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*[\"'][[:blank:]]*,/version=\"${version_new}\",/" < "${git_root}/setup.py" > "${tmpfile}"
+    cat "${tmpfile}" > "${setuppy_path}"
+    rm -f "${tmpfile}"
+
+    git add "${setuppy_path}"
+    git commit "${setuppy_path}" -m "Updated setup.py version"
+    return 0
+
+}
+
+case "${1}" in
+    --about)
+        echo -n "Change the version argument of the project's setup.py to the new created version."
+        ;;
+    *)
+        run "$@"
+        ;;
+esac