refactor(scripts/post-install): consolidate gitrepos.sh and harden the script

gitrepos.sh did the same `~/.dotfiles` / `~/.emacs.d` remote swap that
post-install.sh already had, plus a `git pull --set-upstream origin main`
follow-on that post-install was missing. I folded the pull into the
post-install remote-rewrite block and dropped gitrepos.sh.

While in the file, I also:

- Quoted every variable (`"$logfile"`, `"$HOME"` paths, `"$(whoami)"`).
- Sent the remote-rewrite block to the log file like the other blocks
  do (was leaking to stdout).
- Made the remote-rewrite idempotent. A re-run used to break the
  `cd && remote remove && remote add` chain because remove fails when
  origin is already the desired URL. The loop now uses
  `git -C "$dir" remote set-url` when origin exists and `remote add`
  when it does not.
- Pre-created `~/sync`, `~/pictures`, `~/code`, `~/projects` so the
  clones don't fail on missing parent dirs.
- Wrapped each `git clone` in a `clone_if_missing` helper so a re-run
  skips destinations that already exist instead of erroring out.

README.md picks up the gitrepos.sh removal in the forking note.

1 files changed, 72 insertions, 45 deletions

diff --git a/scripts/post-install.sh b/scripts/post-install.sh
index c3d1022..f184d9d 100755
--- a/scripts/post-install.sh
+++ b/scripts/post-install.sh
@@ -1,59 +1,86 @@
 #!/bin/sh
 
 logfile="$HOME/post-install.log"
-touch $logfile
+touch "$logfile"
 
 echo "fixing perms on gpg directory"
 {
-	chown -R $(whoami) ~/.gnupg/
-	find ~/.gnupg -type f -exec chmod 600 {} \;
-	find ~/.gnupg -type d -exec chmod 700 {} \;
-} >> $logfile 2>&1
+	chown -R "$(whoami)" "$HOME/.gnupg/"
+	find "$HOME/.gnupg" -type f -exec chmod 600 {} \;
+	find "$HOME/.gnupg" -type d -exec chmod 700 {} \;
+} >> "$logfile" 2>&1
 
 echo "fixing remote repositories"
 {
-	cd ~/.dotfiles && \
-		git remote remove origin && \
-		git remote add origin git@cjennings.net:dotfiles.git
-
-	cd ~/.emacs.d && \
-		git remote remove origin && \
-		git remote add origin git@cjennings.net:dotemacs.git
-}
+	for entry in \
+		"$HOME/.dotfiles:git@cjennings.net:dotfiles.git" \
+		"$HOME/.emacs.d:git@cjennings.net:dotemacs.git"
+	do
+		dir="${entry%%:*}"
+		url="${entry#*:}"
+		if [ ! -d "$dir/.git" ]; then
+			echo "skip: $dir is not a git checkout"
+			continue
+		fi
+		if git -C "$dir" remote | grep -qx origin; then
+			git -C "$dir" remote set-url origin "$url"
+		else
+			git -C "$dir" remote add origin "$url"
+		fi
+		git -C "$dir" pull --set-upstream origin main || true
+	done
+} >> "$logfile" 2>&1
 
 echo "cloning git repos"
 {
-    git clone cjennings@cjennings.net:git/org.git ~/sync/org
-	git clone --depth 1 cjennings@cjennings.net:git/wallpaper.git ~/pictures/wallpaper
-    git clone git@cjennings.net:dwm.git ~/code/dwm
-	git clone git@cjennings.net:dmenu.git ~/code/dmenu
-	git clone git@cjennings.net:st.git ~/code/st
-	git clone git@cjennings.net:slock.git ~/code/slock
-	git clone git@cjennings.net:pinentry-dmenu.git ~/code/pinentry-dmenu
-
-    git clone git@github.com:cjennings/pocketbook.git ~/code/pocketbook
-    git clone cjennings@cjennings.net:git/bsdsetup.git ~/code/bsdsetup
-    git clone git@cjennings.net:git/archsetup.git ~/code/archsetup
-    git clone git@cjennings.net:dotemacs.git ~/code/dotemacs
-    
-    git clone cjennings@cjennings.net:git/wttrin.git ~/code/wttrin.git
-    git clone cjennings@cjennings.net:git/rsyncshot.git ~/code/rsyncshot.git
-
-    git clone cjennings@cjennings.net:git/exercism.git ~/code/exercism
-	git clone cjennings@cjennings.net:git/elisp.git ~/code/elisp
-	git clone cjennings@cjennings.net:git/clisp.git ~/code/clisp
-    git clone cjennings@cjennings.net:git/lcthw.git ~/code/lcthw
-	git clone cjennings@cjennings.net:git/100dayspython.git ~/code/100dayspython
-
-    git clone cjennings@cjennings.net:git/documents.git ~/projects/documents
-    git clone cjennings@cjennings.net:git/kit.git ~/projects/kit
-    git clone cjennings@cjennings.net:git/clipper.git ~/projects/clipper
-    git clone cjennings@cjennings.net:git/finances.git ~/projects/finances
-	git clone cjennings@cjennings.net:git/nasbuild.git ~/projects/nasbuild
-	git clone cjennings@cjennings.net:git/nextjob.git ~/projects/nextjob
-	git clone cjennings@cjennings.net:git/elibrary.git ~/projects/elibrary
-    git clone cjennings@cjennings.net:git/danneel-hoa.git ~/projects/danneel-hoa
-    git clone cjennings@cjennings.net:git/danneel-remodel.git ~/projects/danneel-remodel
-} >> $logfile 2>&1
+	mkdir -p "$HOME/sync" "$HOME/pictures" "$HOME/code" "$HOME/projects"
+
+	clone_if_missing() {
+		_remote="$1"
+		_dest="$2"
+		_depth="${3:-}"
+		if [ -e "$_dest" ]; then
+			echo "skip: $_dest already exists"
+			return 0
+		fi
+		if [ -n "$_depth" ]; then
+			git clone --depth "$_depth" "$_remote" "$_dest"
+		else
+			git clone "$_remote" "$_dest"
+		fi
+	}
+
+	clone_if_missing cjennings@cjennings.net:git/org.git       "$HOME/sync/org"
+	clone_if_missing cjennings@cjennings.net:git/wallpaper.git "$HOME/pictures/wallpaper" 1
+	clone_if_missing git@cjennings.net:dwm.git                 "$HOME/code/dwm"
+	clone_if_missing git@cjennings.net:dmenu.git               "$HOME/code/dmenu"
+	clone_if_missing git@cjennings.net:st.git                  "$HOME/code/st"
+	clone_if_missing git@cjennings.net:slock.git               "$HOME/code/slock"
+	clone_if_missing git@cjennings.net:pinentry-dmenu.git      "$HOME/code/pinentry-dmenu"
+
+	clone_if_missing git@github.com:cjennings/pocketbook.git   "$HOME/code/pocketbook"
+	clone_if_missing cjennings@cjennings.net:git/bsdsetup.git  "$HOME/code/bsdsetup"
+	clone_if_missing git@cjennings.net:git/archsetup.git       "$HOME/code/archsetup"
+	clone_if_missing git@cjennings.net:dotemacs.git            "$HOME/code/dotemacs"
+
+	clone_if_missing cjennings@cjennings.net:git/wttrin.git    "$HOME/code/wttrin.git"
+	clone_if_missing cjennings@cjennings.net:git/rsyncshot.git "$HOME/code/rsyncshot.git"
+
+	clone_if_missing cjennings@cjennings.net:git/exercism.git      "$HOME/code/exercism"
+	clone_if_missing cjennings@cjennings.net:git/elisp.git         "$HOME/code/elisp"
+	clone_if_missing cjennings@cjennings.net:git/clisp.git         "$HOME/code/clisp"
+	clone_if_missing cjennings@cjennings.net:git/lcthw.git         "$HOME/code/lcthw"
+	clone_if_missing cjennings@cjennings.net:git/100dayspython.git "$HOME/code/100dayspython"
+
+	clone_if_missing cjennings@cjennings.net:git/documents.git       "$HOME/projects/documents"
+	clone_if_missing cjennings@cjennings.net:git/kit.git             "$HOME/projects/kit"
+	clone_if_missing cjennings@cjennings.net:git/clipper.git         "$HOME/projects/clipper"
+	clone_if_missing cjennings@cjennings.net:git/finances.git        "$HOME/projects/finances"
+	clone_if_missing cjennings@cjennings.net:git/nasbuild.git        "$HOME/projects/nasbuild"
+	clone_if_missing cjennings@cjennings.net:git/nextjob.git         "$HOME/projects/nextjob"
+	clone_if_missing cjennings@cjennings.net:git/elibrary.git        "$HOME/projects/elibrary"
+	clone_if_missing cjennings@cjennings.net:git/danneel-hoa.git     "$HOME/projects/danneel-hoa"
+	clone_if_missing cjennings@cjennings.net:git/danneel-remodel.git "$HOME/projects/danneel-remodel"
+} >> "$logfile" 2>&1
 
 printf "\n\nDone.\n\n"