Initial commit

diff --git a/TODO b/TODO
new file mode 100644 (file)
index 0000000..d273f5d
--- /dev/null
+++ b/TODO
@@ -0,0 +1,8 @@
+* run-time checks for all zsh-specific stuff and make this run with /bin/sh; mostly done
+** vcsh_exit() needs to be wrapped into something that checks if it's being executed by zsh
+** setopt etc: same
+* use PROMPT_SUBST in my own prompt instead of calling buildPS1 again to make this work for everyone, not just me
+* if we are within a vcsh already, only help, run and exit should be allowed
+* ^d re-binding does fail weirdly once i vcsh exit
+* allow vcsh clone <repo>; without <target>
+* set git config core.worktree $HOME or ../../../.. ?

diff --git a/vcsh b/vcsh
new file mode 100755 (executable)
index 0000000..c26b50a
--- /dev/null
+++ b/vcsh
@@ -0,0 +1,132 @@
+#!/bin/sh
+
+#set -x
+
+SELF=$(basename $0)
+[ -z $XDG_CONFIG_HOME ] && XDG_CONFIG_HOME="$HOME/.config"
+VCSH_BASE="$XDG_CONFIG_HOME/vcsh/repo.d"
+
+help() {
+       echo "usage: $SELF <args>
+
+   help           Display this help
+
+   list           List all repos
+
+   use <repo>     Use this repository
+   run <repo>
+       <command>  Use this repository
+
+   init           Initialize a new repository
+   clone <remote>
+         <repo>   Clone from an existing repository
+
+   exit           Exit vcsh mode" >&2
+}
+
+use() {
+       REPO_NAME="$1"
+       GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
+
+       if [ ! -d "$GIT_DIR" ]; then
+               echo E: no repository found for "$REPO_NAME" >&2
+               return 2
+       fi
+
+       export GIT_DIR
+       export GIT_WORK_TREE="$(git config --get core.worktree)"
+       export VCSH_DIRECTORY="$REPO_NAME"
+}
+
+init() {
+       [[ -e $GIT_DIR ]] &&
+               echo "$(basename $0): 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
+       git init
+       git config core.worktree $GIT_WORK_TREE
+}
+
+leave() {
+       unset GIT_DIR
+       unset GIT_WORK_TREE
+       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 $2
+       shift 2
+       "$@"
+       leave
+       return 0
+
+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'
+       fi
+       use $2
+       buildPS1
+       return 0
+
+elif [ "$1" = 'clone' ]; then
+       export GIT_REMOTE="$2"
+       export REPO_NAME="$3"
+       export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
+       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;
+       done
+       [[ -n $CONFLICT ]] &&
+               echo "$(basename $0): fatal: will stop after fetching and not try to merge!\n" &&
+               exit 3
+       git merge origin/master
+       vcsh use $REPO_NAME
+
+elif [ "$1" = 'init' ]; then
+       export REPO_NAME="$2"
+       export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
+       init
+       vcsh use $REPO_NAME
+
+elif [ "$1" = 'exit' ]; then
+       if [[ $VCSH_NO_IGNORE_EOF -gt 0 ]]; then
+               unset VCSH_NO_IGNORE_EOF
+               setopt NO_IGNORE_EOF
+       fi
+       leave
+       buildPS1
+       return 0
+
+else
+       help
+       return 3
+
+fi
+