Add installation script

README.md

@@ -7,6 +7,17 @@ Allows easy handle git tasks.
 
 [![Rultor.com](http://www.rultor.com/b/extsoft/elegant-git)](http://www.rultor.com/p/extsoft/elegant-git)
 
+Installation
+============
+Manual
+------
+`curl https://raw.githubusercontent.com/extsoft/elegant-git/master/install.bash | $(which bash)`
+
+For development
+---------------
+1. clone the repository
+2. run `./install.bash dev`
+
 Usage
 =====
 ```bash

install.bash

@@ -0,0 +1,61 @@
+#!/usr/bin/env bash -e
+
+[ -z "$INSTALL_PATH" ] && INSTALL_PATH="$HOME/.git-elegant"
+[ -z "$REPO_HOME" ] && REPO_HOME="https://github.com/extsoft/elegant-git.git"
+
+man() {
+    echo "Usage: ./install.bash [remote|dev|uninstall]"
+    echo "  - remote - install from GitHub (default)"
+    echo "  - dev - install from local copy"
+    echo "  - uninstall - remove current installation"
+    echo ""
+    echo "Configuration:"
+    echo "  INSTALL_PATH=$INSTALL_PATH"
+    echo "  REPO_HOME=$REPO_HOME"
+}
+
+run() {
+    echo "$1"
+    eval "$1"
+}
+
+install() {
+    echo "Installing 'elegant git' to $INSTALL_PATH"
+    run "rm -rfv $INSTALL_PATH"
+    run "mkdir -p $INSTALL_PATH"
+    if [ $1 = 'remote' ]; then
+        run "git clone --depth 1 $REPO_HOME $INSTALL_PATH"
+        cd "$INSTALL_PATH"
+        rm -rf .git
+    elif [ $1 = 'dev' ]; then
+        cp -rv $(dirname "$0")/* $INSTALL_PATH
+    else
+        echo "Unexpected mode: $1"
+    fi
+
+    run "mkdir -p $INSTALL_PATH/bin"
+    run "mkdir -p $INSTALL_PATH/completion"
+    run "mv $INSTALL_PATH/src/main/git-elegant-completion $INSTALL_PATH/completion"
+    run "mv $INSTALL_PATH/src/main/git-elegant* $INSTALL_PATH/bin"
+
+    echo ""
+    echo "Add the following to your .bash_profile to allow:"
+    echo "# extend 'git' with 'elegant git' commands"
+    echo "export PATH=$INSTALL_PATH/bin:\$PATH"
+    echo "#'elegant git' completion"
+    echo "[ -f $INSTALL_PATH/completion/git-elegant-completion ] && . $INSTALL_PATH/completion/git-elegant-completion"
+    echo ""
+    echo "Then please restart the terminal and enjoy the 'pem'!"
+}
+
+uninstall() {
+    echo "Uninstalling pem from $INSTALL_PATH"
+    run "rm -rfv $INSTALL_PATH"
+}
+
+case "$1" in
+    uninstall)  uninstall                       ;;
+    help)       man                             ;;
+    dev)        uninstall && install dev        ;;
+    *)          uninstall && install remote     ;;
+esac