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#!/bin/sh
# This program is licensed under the GNU GPL version 2 or later.
# (c) Richard "RichiH" Hartmann <richih.mailinglist@gmail.com>, 2011-2012
# For details, see LICENSE. To submit patches, you have to agree to
# license your code under the GNU GPL version 2 or later.
# While the following is not legally binding, the author would like to
# explain the choice of GPLv2+ over GPLv3+.
# The author prefers GPLv3+ over GPLv2+ but feels it's better to maintain
# full compability with git. In case git ever changes its licensing terms,
# this software will most likely follow suit.
SELF=$(basename $0)
fatal() {
echo "$SELF: fatal: $1" >&2
exit $2
}
# We need to run getops as soon as possible so we catch -d and other
# options that will modify our behaviour.
# Commands are handled at the end of this script.
while getopts "c:dv" flag; do
if [ "$1" = '-d' ] || [ "$1" = '--debug' ]; then
set -vx
VCSH_DEBUG=1
shift 1
elif [ "$1" = '-v' ];then
VCSH_VERBOSE=1
elif [ "$1" = '-c' ];then
VCSH_OPTION_CONFIG=$OPTARG
fi
done
source_all() {
# Source file even if it's in $PWD and does not have any slashes in it
case "$1" in
*/*) . "$1";;
*) . "$PWD/$1";;
esac;
}
# Read configuration and set defaults if anything's not set
[ -n "$VCSH_DEBUG" ] && set -vx
[ -z "$XDG_CONFIG_HOME" ] && XDG_CONFIG_HOME="$HOME/.config"
# Read configuration files if there are any
[ -r "/etc/vcsh/config" ] && . "/etc/vcsh/config"
[ -r "$XDG_CONFIG_HOME/vcsh/config" ] && . "$XDG_CONFIG_HOME/vcsh/config"
if [ -n "$VCSH_OPTION_CONFIG" ]; then
# Source $VCSH_OPTION_CONFIG if it can be read and is in $PWD of $PATH
if [ -r "$VCSH_OPTION_CONFIG" ]; then
source_all "$VCSH_OPTION_CONFIG"
else
fatal "Can not read configuration file '$VCSH_OPTION_CONFIG'" 1
fi
fi
[ -n "$VCSH_DEBUG" ] && set -vx
# Read defaults
[ -z "$VCSH_REPO_D" ] && VCSH_REPO_D="$XDG_CONFIG_HOME/vcsh/repo.d"
[ -z "$VCSH_HOOK_D" ] && VCSH_HOOK_D="$XDG_CONFIG_HOME/vcsh/hooks-enabled"
[ -z "$VCSH_BASE" ] && VCSH_BASE="$HOME"
[ -z "$VCSH_GITIGNORE" ] && VCSH_GITIGNORE='exact'
help() {
echo "usage: $SELF <options> <command>
options:
-c <file> Source file
-d Enable debug mode
-v Enable verbose mode
commands:
clone <remote> \\
[<repo>] Clone from an existing repository
delete <repo> Delete an existing repository
enter <repo> Enter repository; spawn new instance of \$SHELL
help Display this help text
init <repo> Initialize a new repository
list List all repositories
list-tracked List all files tracked by vcsh
list-tracked-by \\
<repo> List files tracked by a repository
rename <repo> \\
<newname> Rename repository
run <repo> \\
<command> Use this repository
setup <repo> Set up repository with recommended settings
which <substring> Find substring in name of any tracked file
write-gitignore \\
<repo> Write .gitignore.d/<repo> via git ls-files
<repo> <git command> Shortcut to run git commands directly
<repo> Shortcut to enter repository" >&2
}
debug() {
[ -n "$VCSH_DEBUG" ] && echo "$SELF: debug: $@"
}
verbose() {
if [ -n "$VCSH_DEBUG" ] || [ -n "$VCSH_VERBOSE" ]; then echo "$SELF: verbose: $@"; fi
}
error() {
echo "$SELF: error: $1" >&2
}
info() {
echo "$SELF: info: $1"
}
clone() {
init
git remote add origin "$GIT_REMOTE"
git config branch.master.remote origin
git config branch.master.merge refs/heads/master
if [ $(git ls-remote origin master 2> /dev/null | wc -l ) -lt 1 ]; then
info "remote is empty, not merging anything"
exit
fi
git fetch
for object in $(git ls-tree -r origin/master | awk '{print $4}'); do
[ -e "$object" ] &&
error "'$object' exists." &&
VCSH_CONFLICT=1;
done
[ "$VCSH_CONFLICT" = '1' ] &&
fatal "will stop after fetching and not try to merge!
Once this situation has been resolved, run 'vcsh run $VCSH_REPO_NAME git pull' to finish cloning.\n" 17
git merge origin/master
}
delete() {
cd "$VCSH_BASE" || fatal "could not enter '$VCSH_BASE'" 11
use
info "This operation WILL DETROY DATA!"
files=$(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' ] || exit 16
for file in $files; do
rm -f $file || info "could not delete '$file', continuing with deletion"
done
rm -r "$GIT_DIR" || error "could not delete '$GIT_DIR'"
}
enter() {
hook pre-enter
use
$SHELL
hook post-enter
}
git_dir_exists() {
[ -d "$GIT_DIR" ] || fatal "no repository found for '$VCSH_REPO_NAME'" 12
}
hook() {
for hook in $VCSH_HOOK_D/$1* $VCSH_HOOK_D/$VCSH_REPO_NAME.$1*; do
[ -x "$hook" ] || continue
info "executing '$hook'"
"$hook"
done
}
init() {
[ ! -e "$GIT_DIR" ] || fatal "'$GIT_DIR' exists" 10
export GIT_WORK_TREE="$VCSH_BASE"
mkdir -p "$GIT_WORK_TREE" || fatal "could not create '$GIT_WORK_TREE'" 50
cd "$GIT_WORK_TREE" || fatal "could not enter '$GIT_WORK_TREE'" 11
git init
setup
}
list() {
for repo in "$VCSH_REPO_D"/*.git; do
[ -d "$repo" ] && [ -r "$repo" ] && echo $(basename "$repo" .git)
done
}
get_files() {
export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
git ls-files
}
list_tracked() {
for VCSH_REPO_NAME in $(list); do
get_files
done | sort -u
}
list_tracked_by() {
use
git ls-files | sort -u
}
rename() {
git_dir_exists
[ -d "$GIT_DIR_NEW" ] && fatal "'$GIT_DIR_NEW' exists" 54
mv -f "$GIT_DIR" "$GIT_DIR_NEW" || fatal "Could not mv '$GIT_DIR' '$GIT_DIR_NEW'" 52
}
run() {
hook pre-run
use
$VCSH_EXTERNAL_COMMAND
hook post-run
}
setup() {
hook pre-setup
use
git config core.worktree "$GIT_WORK_TREE"
git config core.excludesfile ".gitignore.d/$VCSH_REPO_NAME"
git config vcsh.vcsh 'true'
[ -e "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" ] && git add -f "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME"
hook post-setup
}
use() {
git_dir_exists
export GIT_WORK_TREE="$(git config --get core.worktree)"
export VCSH_DIRECTORY="$VCSH_REPO_NAME"
}
which() {
for VCSH_REPO_NAME in $(list); do
for VCSH_FILE in $(get_files); do
echo $VCSH_FILE | grep -q "$VCSH_COMMAND_PARAMETER" && echo "$VCSH_REPO_NAME: $VCSH_FILE"
done
done | sort -u
}
write_gitignore() {
use
cd "$VCSH_BASE" || fatal "could not enter '$VCSH_BASE'" 11
gitignores=$(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) || fatal "could not create tempfile" 51
echo '*' > "$tempfile" || fatal "could not write to '$tempfile'" 57
for gitignore in $gitignores; do
echo "$gitignore" | sed 's/^/!/' >> "$tempfile" || fatal "could not write to '$tempfile'" 57
if [ x$VCSH_GITIGNORE = x'recursive' ] && [ -d "$gitignore" ]; then
{ echo "$gitignore/*" | sed 's/^/!/' >> "$tempfile" || fatal "could not write to '$tempfile'" 57; }
fi
done
if diff -N "$tempfile" "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" > /dev/null; then
rm -f "$tempfile" || error "could not delete '$tempfile'"
exit
fi
if [ -e "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" ]; then
info "'$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME' differs from new data, moving it to '$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME.bak'"
mv -f "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME.bak" ||
fatal "could not move '$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME' to '$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME.bak'" 53
fi
mv -f "$tempfile" "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" ||
fatal "could not move '$tempfile' to '$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME'" 53
}
if [ ! "x$VCSH_GITIGNORE" = 'xexact' ] && [ ! "x$VCSH_GITIGNORE" = 'xrecursive' ]; then
fatal "'\$VCSH_GITIGNORE' must be either 'exact' or 'recursive'" 1
fi
if [ "$1" = 'clone' ]; then
[ -z "$2" ] && fatal "$1: please specify a remote" 1
export VCSH_COMMAND="$1"
GIT_REMOTE="$2"
[ -n "$3" ] && VCSH_REPO_NAME="$3" || VCSH_REPO_NAME=$(basename "$GIT_REMOTE" .git)
export VCSH_REPO_NAME
export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
elif [ "$1" = 'which' ]; then
[ -z "$2" ] && fatal "$1: please specify a filename" 1
[ -n "$3" ] && fatal "$1: too many parameters" 1
export VCSH_COMMAND="$1"
export VCSH_COMMAND_PARAMETER="$2"
elif [ "$1" = 'delete' ] ||
[ "$1" = 'enter' ] ||
[ "$1" = 'init' ] ||
[ "$1" = 'list-tracked-by' ] ||
[ "$1" = 'rename' ] ||
[ "$1" = 'run' ] ||
[ "$1" = 'setup' ] ||
[ "$1" = 'write-gitignore' ]; then
[ -z $2 ] && fatal "$1: please specify repository to work on" 1
[ "$1" = 'rename' -a -z "$3" ] && fatal "$1: please specify a target name" 1
[ "$1" = 'run' -a -z "$3" ] && fatal "$1: please specify a command" 1
export VCSH_COMMAND="$1"
export VCSH_REPO_NAME="$2"
export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
[ "$VCSH_COMMAND" = 'rename' ] && export GIT_DIR_NEW="$VCSH_REPO_D/$3.git"
[ "$VCSH_COMMAND" = 'run' ] && shift 2 && export VCSH_EXTERNAL_COMMAND="$*"
[ "$VCSH_COMMAND" = 'write-gitignore' ]
elif [ "$1" = 'list' ] ||
[ "$1" = 'list-tracked' ]; then
export VCSH_COMMAND="$1"
elif [ -n "$2" ]; then
export VCSH_COMMAND='run'
export VCSH_REPO_NAME="$1"
export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
[ -d $GIT_DIR ] || { help; exit 1; }
shift 1
export VCSH_EXTERNAL_COMMAND="git $*"
elif [ -n "$1" ]; then
export VCSH_COMMAND='enter'
export VCSH_REPO_NAME="$1"
export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
[ -d $GIT_DIR ] || { help; exit 1; }
else
# $1 is empty, or 'help'
help && exit
fi
# Did we receive a directory instead of a name?
# Mangle the input to fit normal operation.
if echo $VCSH_REPO_NAME | grep -q '/'; then
export GIT_DIR=$VCSH_REPO_NAME
export VCSH_REPO_NAME=$(basename "$VCSH_REPO_NAME" .git)
fi
for check_directory in "$VCSH_REPO_D" "$VCSH_BASE/.gitignore.d"
do
if [ ! -d "$check_directory" ]; then
if [ -e "$check_directory" ]; then
fatal "'$check_directory' exists but is not a directory" 13
else
info "attempting to create '$check_directory'"
mkdir -p "$check_directory" || fatal "could not create '$check_directory'" 50
fi
fi
done
verbose "$VCSH_COMMAND begin"
export VCSH_COMMAND=$(echo $VCSH_COMMAND | sed 's/-/_/g')
hook pre-command
$VCSH_COMMAND
hook post-command
verbose "$VCSH_COMMAND end, exiting"
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