X-Git-Url: https://git.madduck.net/code/vcsh.git/blobdiff_plain/50458be88285376612b5fc1ff45b1f96ee9a0930..a60f8741490b0cc7292553e030ead9f9d86271a9:/vcsh

diff --git a/vcsh b/vcsh
index 8fedc09..b5e703e 100755
--- a/vcsh
+++ b/vcsh
@@ -1,55 +1,78 @@
 #!/bin/sh
 
-#set -x
+[ -n "$VCSH_DEBUG" ]      && set -x
+[ -z "$XDG_CONFIG_HOME" ] && XDG_CONFIG_HOME="$HOME/.config"
+[ -z "$VCSH_BASE" ]       && VCSH_BASE="$XDG_CONFIG_HOME/vcsh/repo.d"
 
 SELF=$(basename $0)
-[ -z $XDG_CONFIG_HOME ] && XDG_CONFIG_HOME="$HOME/.config"
-VCSH_BASE="$XDG_CONFIG_HOME/vcsh/repo.d"
+if [ "$SELF" = 'bash' ] ||
+   [ "$SELF" = 'dash' ] ||
+   [ "$SELF" = 'sh' ] ||
+   [ "$SELF" = 'zsh' ]; then
+	SELF='vcsh'
+	VCSH_SOURCED=1
+fi
+
 
 help() {
 	echo "usage: $SELF <args>
 
-   help           Display this help
+   clone <remote> \\
+         [<repo>]       Clone from an existing repository
+   help                 Display this help text
+   delete               Delete an existing repository
+   enter                Enter repository; spawn new $SHELL
+   exit                 Exit repository; unset ENV
+   init <repo>          Initialize a new repository
+   list                 List all repositories
+   run <repo> \\
+       <command>        Use this repository
 
-   list           List all repos
+   seed-gitignore \\
+   <repo>               Seed .gitignore.d/<repo> from git ls-files
+   use <repo>           Use repository; set ENV
 
-   use <repo>     Use this repository
-   run <repo>
-       <command>  Use this repository
+   <repo> <git command> Special command that allows you to run git commands
+                        directly without having to type so much ;)" >&2
+}
 
-   init           Initialize a new repository
-   clone <remote>
-         [<repo>] Clone from an existing repository
+debug() {
+	[ -n "$VCSH_DEBUG" ] && echo "$SELF: debug: $@"
+}
 
-   exit           Exit vcsh mode" >&2
+verbose() {
+	if [ -n "$VCSH_DEBUG" ] || [ -n "$VCSH_VERBOSE" ]; then echo "$SELF: verbose: $@"; fi
 }
 
 use() {
-	REPO_NAME="$1"
-	GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
-
+	verbose "use() begin"
 	if [ ! -d "$GIT_DIR" ]; then
-		echo E: no repository found for "$REPO_NAME" >&2
-		return 2
+		echo E: no repository found for "$VCSH_REPO_NAME" >&2
+		return 1
 	fi
-
 	export GIT_DIR
 	export GIT_WORK_TREE="$(git config --get core.worktree)"
-	export VCSH_DIRECTORY="$REPO_NAME"
+	export VCSH_DIRECTORY="$VCSH_REPO_NAME"
+	verbose "use() end"
 }
 
 init() {
-	[[ -e $GIT_DIR ]] &&
-		echo "$(basename $0): fatal: $GIT_DIR exists" &&
+	verbose "init() begin"
+	[ -e "$GIT_DIR" ] &&
+		echo "$SELF: fatal: $GIT_DIR exists" &&
 		return 21
 	export GIT_WORK_TREE="$HOME"
-	mkdir -p $GIT_WORK_TREE
-	cd $GIT_WORK_TREE ||
-		(echo "$(basename $0): fatal: could not enter $GIT_WORK_TREE" &&
-		 exit 20) || exit 20
-	cd $GIT_WORK_TREE
+	mkdir -p "$GIT_WORK_TREE"
+	cd "$GIT_WORK_TREE" ||
+		(echo "$SELF: fatal: could not enter $GIT_WORK_TREE" &&
+		 return 1) || return $?
+	cd "$GIT_WORK_TREE"
 	git init
-	git config core.worktree $GIT_WORK_TREE
+	git config core.worktree     "$GIT_WORK_TREE"
+	git config core.excludesfile ".gitignore.d/$VCSH_REPO_NAME"
+	touch   "$HOME/.gitignore.d/$VCSH_REPO_NAME"
+	git add "$HOME/.gitignore.d/$VCSH_REPO_NAME"
+	verbose "init() end"
 }
 
 leave() {
@@ -58,77 +81,202 @@ leave() {
 	unset VCSH_DIRECTORY
 }
 
-if [ "$1" = 'help' ] || [ $# -eq 0 ]; then
-	help
-	[ "$1" = 'help' ]
-	return $?
 
-elif [ "$1" = 'list' ]; then
-	for i in $VCSH_BASE/*.git; do
-		echo $(basename $i .git)
-	done
-	return 0
-
-elif [ "$1" = 'run' ]; then
-	use $2
+if [ "$1" = 'clone' ]; then
+	GIT_REMOTE="$2"
+	export GIT_REMOTE
+	VCSH_REPO_NAME="$3"
+	[ -z "$VCSH_REPO_NAME" ] && VCSH_REPO_NAME=$(basename "$GIT_REMOTE" .git)
+	export VCSH_REPO_NAME
+	export GIT_DIR="$VCSH_BASE/$VCSH_REPO_NAME.git"
+elif [ "$1" = 'delete' ] ||
+     [ "$1" = 'enter' ] ||
+     [ "$1" = 'init' ] ||
+     [ "$1" = 'run' ] ||
+     [ "$1" = 'seed-gitignore' ] ||
+     [ "$1" = 'use' ]; then
+	[ -z $2 ] && echo "$SELF $1: error: please specify repository to work on" && return 1
+	export VCSH_COMMAND="$1"
+	export VCSH_REPO_NAME="$2"
+	export GIT_DIR="$VCSH_BASE/$VCSH_REPO_NAME.git"
 	shift 2
-	"$@"
-	leave
-	return 0
+	export VCSH_EXTERNAL_COMMAND="$*"
+	if [ "$VCSH_COMMAND" = 'run' ]; then
+		[ -z "$VCSH_EXTERNAL_COMMAND" ] && echo "$SELF $1 $2: error: please specify a command" && return 1
+	fi
+elif [ "$1" = 'exit' ] ||
+     [ "$1" = 'help' ] ||
+     [ "$1" = 'list' ]; then
+	export VCSH_COMMAND="$1"
+else
+	[ -z $1 ] && help && return 0
+	export VCSH_COMMAND='run'
+	export VCSH_REPO_NAME="$1"
+	export GIT_DIR="$VCSH_BASE/$VCSH_REPO_NAME.git"
+	[ -d $GIT_DIR ] || (help && return 1) || return 0
+	shift 1
+	export VCSH_EXTERNAL_COMMAND="git $*"
+fi
 
-elif [ "$1" = 'use' ]; then
-	if [[ -o NO_IGNORE_EOF ]]; then
-		export VCSH_NO_IGNORE_EOF=1
-		setopt IGNORE_EOF
-		vcsh_exit() {vcsh exit; zle reset-prompt}
-		zle -N vcsh_exit
-		bindkey '^d' 'vcsh_exit'
+
+for check_directory in "$VCSH_BASE" "$HOME/.gitignore.d"
+do
+	if [ ! -d "$check_directory" ]; then
+		if [ -e "$check_directory" ]; then
+			echo "$SELF: error: $check_directory exists but is not a directory" >&2
+			return 2
+		else
+			echo "$SELF: info: attempting to create $check_directory"
+			mkdir -p "$check_directory" || (echo "$SELF: error: could not create $check_directory" >&2; return 2) || return $?
+		fi
 	fi
-	use $2
-	buildPS1
-	return 0
+done
 
-elif [ "$1" = 'clone' ]; then
-	GIT_REMOTE="$2"
-	REPO_NAME="$3"
-	[[ -z $REPO_NAME ]] && REPO_NAME=$(basename $GIT_REMOTE .git)
-	export REPO_NAME
-	export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
-	init
 
-	git remote add origin $GIT_REMOTE
+if [ "$VCSH_COMMAND" = 'clone' ]; then
+	verbose "clone begin"
+	init
+	git remote add origin "$GIT_REMOTE"
 	git config branch.master.remote origin
 	git config branch.master.merge  refs/heads/master
 	git fetch
-	for i in $(git ls-tree -r origin/master | awk '{print $4}'); do
-	[[ -e $i ]] &&
-		echo "$(basename $0): error: $i exists." &&
-		CONFLICT=1;
+	for object in $(git ls-tree -r origin/master | awk '{print $4}'); do
+		[ -e "$object" ] &&
+			echo "$SELF: error: $object exists." &&
+			VCSH_CONFLICT=1;
 	done
-	[[ -n $CONFLICT ]] &&
-		echo "$(basename $0): fatal: will stop after fetching and not try to merge!\n" &&
-		exit 3
+	[ "$VCSH_CONFLICT" = '1' ] &&
+		echo "$SELF: fatal: will stop after fetching and not try to merge!\n" &&
+		echo "  Once this situation has been resolved, run 'vcsh run <foo> git pull' to finish cloning.\n" &&
+		return 3
 	git merge origin/master
-	vcsh use $REPO_NAME
+#	use || return $?
+	verbose "clone end"
 
-elif [ "$1" = 'init' ]; then
-	export REPO_NAME="$2"
-	export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
-	init
-	vcsh use $REPO_NAME
+#elif [ "$VCSH_COMMAND" = 'help' ] || [ "$#" -eq 0 ]; then
+elif [ "$VCSH_COMMAND" = 'help' ]; then
+	help
 
-elif [ "$1" = 'exit' ]; then
-	if [[ $VCSH_NO_IGNORE_EOF -gt 0 ]]; then
-		unset VCSH_NO_IGNORE_EOF
-		setopt NO_IGNORE_EOF
-	fi
+elif [ "$VCSH_COMMAND" = 'delete' ]; then
+	verbose "delete begin"
+	old_dir="$PWD"
+	cd "$HOME"
+	use || return $?
+	echo "$SELF: info: This operation WILL DETROY DATA!"
+	files=$(git ls-files)
+	echo "These files will be deleted:
+
+$files
+
+AGAIN, THIS WILL DELETE YOUR DATA!
+To continue, type \"Yes, do as I say\""
+	read answer
+	[ "x$answer" = "xYes, do as I say" ] || return 1
+	for file in $files; do
+		rm -f $file || echo "$SELF: info: could not delete '$file', continuing with deletion"
+	done
+	rm -rf "$GIT_DIR" || echo "$SELF: info: could not delete '$GIT_DIR'"
+	cd "$old_dir"
+	verbose "delete end"
+
+elif [ "$VCSH_COMMAND" = 'enter' ]; then
+	verbose "enter begin"
+	use || return $?
+	$SHELL
 	leave
-	buildPS1
+	verbose "enter end"
+
+elif [ "$VCSH_COMMAND" = 'exit' ]; then
+	verbose "exit begin"
+#	if [ -n "$ZSH_VERSION" ] && [ "$VCSH_NO_IGNORE_EOF" = '1' ]; then
+#		unset VCSH_NO_IGNORE_EOF
+#		setopt NO_IGNORE_EOF
+#	fi
+	[ -z "$VCSH_SOURCED" ] && echo "$SELF $VCSH_COMMAND: You need to source vcsh if you want to run in this mode" && return 10
+	leave
+#	[ -n "$ZSH_VERSION" ] && [ "$USER" = richih ] && buildPS1
+	verbose "exit end"
 	return 0
 
+elif [ "$VCSH_COMMAND" = 'init' ]; then
+	verbose "init begin"
+	init
+#	use || return $?
+	verbose "init end"
+
+elif [ "$VCSH_COMMAND" = 'list' ]; then
+	verbose "list begin"
+	for i in "$VCSH_BASE"/*.git; do
+		echo $(basename "$i" .git)
+	done
+	verbose "list end"
+
+elif [ "$VCSH_COMMAND" = 'run' ]; then
+	verbose "run begin"
+	use || return $?
+	$VCSH_EXTERNAL_COMMAND
+	leave
+	verbose "run end"
+
+elif [ "$VCSH_COMMAND" = 'seed-gitignore' ]; then
+	verbose "seed-gitignore begin"
+	use || return $?
+	# 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 "$HOME"
+	git config core.excludesfile ".gitignore.d/$VCSH_REPO_NAME"
+	gitignores=$(for file in $(git ls-files); do
+		while true; do
+			echo $file; new="${file%/*}"
+			[ "$file" = "$new" ] && break
+			file="$new"
+		done;
+	done | sort -u)
+	tempfile=$(mktemp) ||
+		(echo "$SELF: fatal: could not create tempfile" && return 1) || return $?
+	echo '*' > "$tempfile"
+	for gitignore in $gitignores; do
+		echo "$gitignore" | sed 's/^/!/' >> "$tempfile"
+		[ -d "$gitignore" ] && echo "$gitignore/*" | sed 's/^/!/'>> "$tempfile"
+	done
+	diff -N "$tempfile" "$HOME/.gitignore.d/$VCSH_REPO_NAME" > /dev/null &&
+		rm -f "$tempfile" &&
+		return
+	if [ -e "$HOME/.gitignore.d/$VCSH_REPO_NAME" ]; then
+		echo "$SELF: info: $HOME/.gitignore.d/$VCSH_REPO_NAME differs from new data, moving it to $HOME/.gitignore.d/$VCSH_REPO_NAME.bak"
+		mv -f "$HOME/.gitignore.d/$VCSH_REPO_NAME" "$HOME/.gitignore.d/$VCSH_REPO_NAME.bak" ||
+			(echo "$SELF: fatal: could not move $HOME/.gitignore.d/$VCSH_REPO_NAME to $HOME/.gitignore.d/$VCSH_REPO_NAME.bak" &&
+			 return 1) || return $?
+	fi
+	mv -f "$tempfile" "$HOME/.gitignore.d/$VCSH_REPO_NAME" ||
+		(echo "$SELF: fatal: could not move $tempfile to $HOME/.gitignore.d/$VCSH_REPO_NAME" && return 1) || return $?
+	cd "$old_dir"
+	verbose "seed-gitignore end"
+
+elif [ "$VCSH_COMMAND" = 'use' ]; then
+	verbose "use begin"
+#	if [ -n "$ZSH_VERSION" ]; then
+#		if [ -o NO_IGNORE_EOF ]; then
+#			export VCSH_NO_IGNORE_EOF=1
+#			setopt IGNORE_EOF
+#		fi
+#		vcsh_exit() {
+#			vcsh exit;
+#			zle reset-prompt;
+#		}
+#		zle -N vcsh_exit
+#		bindkey '^d' 'vcsh_exit'
+#	fi
+	[ -z "$VCSH_SOURCED" ] && echo "$SELF $VCSH_COMMAND: You need to source vcsh if you want to run in this mode" && return 10
+	use || return $?
+#	[ -n "$ZSH_VERSION" ] && [ "$USER" = richih ] && buildPS1
+	verbose "use end"
+
 else
+	verbose "defaulting to calling help()"
 	help
-	return 3
+	echo "$SELF: fatal: You should never reach this code. File a bug, please."
+	return 99
 
 fi
-