From 55dee6c2ef0b12f154d4d4cb2be1a2df882bcf3d Mon Sep 17 00:00:00 2001
From: Simon Ruderich <simon@ruderich.org>
Date: Sat, 21 Feb 2009 16:46:43 -0600
Subject: [PATCH] setup.sh can create repositories and setup remotes.

See the source for more information.
---
 setup.sh | 84 ++++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 76 insertions(+), 8 deletions(-)

diff --git a/setup.sh b/setup.sh
index 2f8472a..8bb651c 100755
--- a/setup.sh
+++ b/setup.sh
@@ -4,14 +4,82 @@
 # configuration directory.
 
 
-# Projects which use git.
-projects="browser lftp mail music os shell vcs vim"
+# Creates a new git repository in $1, adds a new remote named $2 and fetches
+# the master on $3. If the git repository already exists a new remote $2 for
+# $3 is added. If the remote already exists nothing happens.
+function git_remote_init_update() {
+    # Make sure the requested directory exists.
+    mkdir -p "$1"
+    # Go to the target directory.
+    pwd=`pwd`
+    cd "$1"
+
+    # Create the git repository if it doesn't exist yet.
+    new=no
+    if [ ! -d .git ]; then
+        echo "Creating new git repository in '$1'."
+        git init > /dev/null
+        new=yes
+    fi
+
+    # If the remote doesn't exist add it and fetch from remote.
+    git remote | grep "$2" > /dev/null
+    if [ "$?" -ne "0" ]; then
+        echo "Adding remote '$2' to '$1'."
+        git remote add -t master "$2" "$3/$1"
+        git fetch "$2" > /dev/null
+        # Pushing to the remote pushes only the master branch in remotes named
+        # the hostname of this machine. This makes it easy to see where
+        # changes came from.
+        echo "	push = +refs/heads/master:refs/remotes/`hostname`/master" \
+            >> .git/config
+    else
+        echo "Remote '$2' already exists in '$1'."
+    fi
+
+    # Merge with remote master if the repository was just created, otherwise
+    # the repository starts empty.
+    if [ $new = yes ]; then
+        git merge "$2/master"
+    fi
+
+    # Go back to the starting directory.
+    cd "$pwd"
+    unset pwd
+}
 
 # Run setup.sh in each project.
-for project in `find . -name .git -type d`; do
-    # Skip this directory to prevent an infinite loop.
-    [ "$project" = "./.git" ] && continue
+if [ "$#" -eq "0" ]; then
+    for project in `find . -name .git -type d`; do
+        # Skip this directory to prevent an infinite loop.
+        [ "$project" = "./.git" ] && continue
+
+        [ -d "$project" ] && (echo "running setup.sh in '$project'";
+                            cd "$project/.."; ./setup.sh > /dev/null)
+    done
+# Create git repository if necessary and/or additional remotes and fetch them.
+elif [ "$#" -ge "2" ]; then
+    # Get name of the remote and the remote location.
+    name="$1"
+    remote="$2"
+    # Remove $1 and $2 to get the possible subdirectories in $@.
+    shift
+    shift
+
+    # Create the git repository if necessary and add the remotes.
+    git_remote_init_update . "$name" "$remote"
+    for project in $@; do
+        git_remote_init_update "$project" "$name" "$remote"
+    done
+# Usage message.
+else
+    echo "Usage: ./setup.sh <remote-name> <git-repository> [subdirectories]*
+
+Example:
+./setup.sh nightwish ssh://user@nightwish/home/user/dotfiles shell vcs
 
-    [ -d "$project" ] && (echo "running setup.sh in '$project'";
-                          cd "$project/.."; ./setup.sh > /dev/null)
-done
+This will add the remote nightwish given by the ssh URL and fetch the master
+for dotfiles, dotfiles/shell and dotfiles/vcs if they don't exist already. If
+the remotes exist already nothing happens. This also sets up fetching/pushing
+settings so only the master is fetched and pushed."
+fi
-- 
2.45.2