X-Git-Url: https://git.madduck.net/code/vcsh.git/blobdiff_plain/8b65faf2441f8d2439629bf8a1fa57e3edc8fe0a..9fe9f7d5a182830bf4c71e2c1143cbba9ff12488:/vcsh

diff --git a/vcsh b/vcsh
index dd05f0e..d0e7b37 100755
--- a/vcsh
+++ b/vcsh
@@ -33,16 +33,15 @@ verbose() {
 help() {
 	echo "usage: $SELF <args>
 
+   clone <remote> \\
+         [<repo>]    Clone from an existing repository
    help              Display this help
-
+   delete            Delete an existing repository
+   init <repo>       Initialize a new repository
    list              List all repos
-
    run <repo> \\
        <command>     Use this repository
 
-   init <repo>       Initialize a new repository
-   clone <remote> \\
-         [<repo>]    Clone from an existing repository
    seed-gitignore \\
    <repo>            Seed .gitignore.d/<repo> from git ls-files" >&2
 }
@@ -54,7 +53,7 @@ use() {
 
 	if [ ! -d "$GIT_DIR" ]; then
 		echo E: no repository found for "$REPO_NAME" >&2
-		return 2
+		return 1
 	fi
 
 	export GIT_DIR
@@ -103,7 +102,7 @@ elif [ "$1" = 'list' ]; then
 
 elif [ "$1" = 'run' ]; then
 	verbose "run begin"
-	use "$2"
+	use "$2" || return 1
 	shift 2
 	"$@"
 	leave
@@ -124,7 +123,7 @@ elif [ "$1" = 'run' ]; then
 #		zle -N vcsh_exit
 #		bindkey '^d' 'vcsh_exit'
 #	fi
-#	use $2
+#	use "$2" || return 1
 #	[ -n "$ZSH_VERSION" ] && [ "$USER" = richih ] && buildPS1
 #	verbose "use end"
 #	exit 0
@@ -153,7 +152,7 @@ elif [ "$1" = 'clone' ]; then
 		echo "  Once this situation has been resolved, run 'vcsh run <foo> git pull' to finish cloning.\n" &&
 		exit 3
 	git merge origin/master
-#	vcsh use $REPO_NAME
+#	use $REPO_NAME || return 1
 	verbose "clone end"
 
 elif [ "$1" = 'init' ]; then
@@ -162,7 +161,7 @@ elif [ "$1" = 'init' ]; then
 	export REPO_NAME="$2"
 	export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
 	init
-#	vcsh use "$REPO_NAME"
+#	use "$REPO_NAME" || return 1
 	verbose "init end"
 
 #elif [ "$1" = 'exit' ]; then
@@ -179,13 +178,12 @@ elif [ "$1" = 'init' ]; then
 elif [ "$1" = 'seed-gitignore' ]; then
 	verbose "seed-gitignore begin"
 	[ -z $2 ] && help && echo && echo "$SELF $1: error: please specify repository to work on" && return 0
-	use "$2"
+	use $2 || return 1
 	# Switching directory as this has to be executed from $HOME to be of any use.
 	# Going back into old directory at the end in case `vcsh use` is reactivated.
 	old_dir="$PWD"
 	cd "$HOME"
 	git config core.excludesfile ".gitignore.d/$REPO_NAME"
-	files=$(git ls-files)
 	gitignores=$(for file in $(git ls-files); do
 		while true; do
 			echo $file; new="${file%/*}"
@@ -193,14 +191,49 @@ elif [ "$1" = 'seed-gitignore' ]; then
 			file="$new"
 		done;
 	done | sort -u | sed 's/^/!/')
-	[ -e "$HOME/.gitignore.d/$2" ] &&
-	echo "$SELF: info: $HOME/.gitignore.d/$2 exists, moving it to $HOME/.gitignore.d/$2.bak" &&
-	mv -f "$HOME/.gitignore.d/$2" "$HOME/.gitignore.d/$2.bak"
-	echo '*' > "$HOME/.gitignore.d/$2"
+	tempfile=$(mktemp) ||
+		(echo "$SELF: fatal: could not create tempfile" && exit 1) 
+	echo '*' > "$tempfile"
 	for gitignore in $gitignores; do
-		echo "$gitignore" >> "$HOME/.gitignore.d/$2"
+		echo "$gitignore" >> "$tempfile"
 	done
+	diff -N "$tempfile" "$HOME/.gitignore.d/$2" > /dev/null &&
+		rm -f "$tempfile" &&
+		return
+	if [ -e "$HOME/.gitignore.d/$2" ]; then
+		echo "$SELF: info: $HOME/.gitignore.d/$2 differs from new data, moving it to $HOME/.gitignore.d/$2.bak"
+		mv -f "$HOME/.gitignore.d/$2" "$HOME/.gitignore.d/$2.bak" ||
+			(echo "$SELF: fatal: could not move $HOME/.gitignore.d/$2 to $HOME/.gitignore.d/$2.bak" && exit 1)
+	fi
+	mv -f "$tempfile" "$HOME/.gitignore.d/$2" ||
+		(echo "$SELF: fatal: could not move $tempfile to $HOME/.gitignore.d/$2" && exit 1)
 	cd "$old_dir"
+	verbose "seed-gitignore end"
+
+elif [ "$1" = 'delete' ]; then
+	verbose "delete begin"
+	REPO_NAME=$2
+	[ -z $REPO_NAME ] && help && echo && echo "$SELF $1: error: please specify repository to work on" && return 0
+	old_dir="$PWD"
+	cd "$HOME"
+	use $REPO_NAME || return 1
+	echo "$SELF: info: This operation WILL DETROY DATA!"
+	files=$(git ls-files)
+	echo "These files would be deleted:
+
+$files
+
+AGAIN, THIS WILL DELETE YOUR DATA!
+To continue, type \"Yes, do as I say\""
+	read answer
+	[ "x$answer" = "xYes, do as I say" ] || exit
+	for file in $files; do
+		rm -f $file || echo "$SELF: info: could not delete '$file', continuing with deletion"
+	done
+	rm -rf "$VCSH_BASE/$REPO_NAME.git" || echo "$SELF: info: could not delete '$VCSH_BASE/$REPO_NAME.git'"
+	cd "$old_dir"
+	verbose "delete end"
+
 
 else
 	verbose "defaulting to calling help()"