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smooth
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smooth
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#! /bin/bash
# smooth (BASH script) -- git/svn/hg wrapper
#
# See [instructions](doc/s for smooth source control.md) for usage.
# Options:
# -s (Git only) Commit the staged files (i.e. the cache)
# -d Debug mode; for smooth developers only.
# -q quiet mode; don't report the top level working directory
# -M/--mercurial/-G/--git Force repo type
# -r (Git only) recursive clone
# -o (Git only) Specify remote to create/use
# -b (Git only) Specify local branch
# -B (Git only) Specify remote branch to push to
#
# Version: 1.5.0
# Copyright: (c) 2014 Alastair Irvine <alastair@plug.org.au>
# Keywords: git svn hg source-control wrapper
# Requires: bash v4.0+
# Licence: This file is released under the GNU General Public License
#
#
# Licence details:
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (at
# your option) any later version.
#
# See http://www.gnu.org/licenses/gpl-2.0.html for more information.
#
# You can find the complete text of the GPLv2 in the file
# /usr/share/common-licenses/GPL-2 on Debian systems.
# Or see the file COPYING in the same directory as this program.
#
#
# TO-DO:
# + pipe output for svn (when $action is like [dl]*, dispatch should pipe through less or `vim -`)
# + 'init' action: detect if http[s] URL hosts a Mercurial repo
# + hg commit functions
# + need a means to override 'remote.<name>.push' branch
# + convert Mercurial hg@host:[path] repo locations to ssh://[user@]host[:port]/[path] format
# + select branch/remote for 'here', 'transfer', etc.
self=$(basename "$0")
allowed_options=dsqCfrMGo:b:B:m:
allowed_long_options=quiet,force,mercurial,git,origin=,branch=,local-branch=,remote-branch=,message=
# *** FUNCTIONS ***
svn_uuid()
{
svn info "$1" | awk '/^Repository UUID:/ { print $3 }'
}
# Evaluate successively higher candidate directories until the base of the
# working tree for the current repo is found
svn_toplevel()
{
local toplevel dir=$(readlink -f "${1-.}")
# start at arg (or $PWD) and work up the tree
while [ "$dir" != / ] ; do
# if the dir is a working copy, it's a candidate for the toplevel
if [ -d "$dir/.svn" ] ; then
# if there hasn't been a candidate before, flag this dir straightaway
if [ -z "$toplevel" ] ; then
toplevel=$dir
else
# but if there is a candidate, do the magic test: see if there's a
# change in repo UUID
## echo "[$dir] [$toplevel]" >&2
if [ "$(svn_uuid "$dir")" = "$(svn_uuid "$toplevel")" ] ; then
# if no change, appoint a new candidate
toplevel=$dir
else
# if the UUID changed, accept the current candidate
break
fi
fi
elif [ -n "$toplevel" ] ; then
# if the dir isn't an SVN working copy, and there's a candidate, accept it
# (can assume we've ascended too far)
break
fi
# prepare for the next loop iteration
prev_dir=$dir
dir=$(dirname "$dir")
done
# go with the most recent candidate or return an error if there isn't one
if [ -n "$toplevel" ] ; then
echo "$toplevel"
else
return 2
fi
}
# This will return 0 if on a branch or 1 if detached head (outputs nothing)
git_current_branch()
{
git branch | sed -n 's/^\* \(.*\)/\1/p' | grep -v '(no branch)'
}
# Outputs $branch (if set during command-line parsing) or the current branch
# or nothing if detached head (and returns 1)
git_which_branch()
{
## # force output of branch name
## [ $debug -ge 3 ] && exec 2>&1
if [ -n "$local_branch" ] ; then
echo "$local_branch"
else
git_current_branch
fi
}
# Outputs the name of the remote for the appropriate branch (current or
# specified, i.e. present in $local_branch) or nothing (and an non-zero exit
# code) if the branch doesn't exist or doesn't have a remote.
git_remote()
{
local branch
branch=${1:-$(git_which_branch)}
if ! git config --get "branch.$branch.remote"
then
echo "smooth: WARNING: branch '$branch' doesn't have a remote" >&2
return 1
fi
}
# Outputs the URL of the remote for the appropriate branch (current or
# specified, i.e. present in $branch).
git_url()
{
local r
if r=$(git_remote)
then
# Get the origin ID for the branch and look up its URL
git config --get "remote.$r.url"
fi
}
# Pushes the current/specified branch only. Is smart about which branch to push to.
git_transfer()
{
local remote branch rb
# Determine local branch to push
if ! branch=$(git_which_branch)
then
echo "smooth: ERROR: branch '$branch' does not exist" >&2
exit 11
fi
if [ -n "$origin_name" ] ; then
remote=$origin_name
else
if ! remote=$(git_remote "$branch")
then
echo "smooth: ERROR: branch '$branch' does not have a remote" >&2
exit 8
fi
fi
# Determine the remote branch to push to:
# 1) Use specified remote branch (if set)
# 2) Otherwise, get 'remote.<name>.push' (if set)
# 3) Otherwise, get 'branch.<name>.merge' (if set)
# (This emulates "push.default = tracking")
# 4) Otherwise, default to local branch name
# (note: this can create a new (non-tracking) remote branch)
if [ -n "$remote_branch" ] ; then
rb=$remote_branch
elif ! rb=$(git config --get "remote.$remote.push")
then
if ! rb=$(git config --get "branch.$branch.merge")
then
rb=$branch
fi
fi
git push $extra_opts "$remote" "$branch:$rb"
}
# Creates a tag and pushes it.
#
# Options:
# -l Don't push the tag
git_push_tag()
{
local r transfer
if [ -z "$tagname" ] ; then
echo "smooth: ERROR: tag name required" >&2
exit 9
fi
if [ "x$1" = "x-l" ] ; then
transfer=n
shift
else
transfer=y
fi
set -e
git tag "$@"
if [ $transfer = y ] ; then
if ! r=$(git_remote)
then
echo "smooth: ERROR: branch '$branch' does not exist or doesn't have a remote" >&2
exit 8
fi
git push "$r" "$tagname"
fi
set +e
}
git_object_dump()
{
git show $branch
}
git_print_tags()
{
git show-ref --tags $branch | sed 's@refs/tags/@@'
}
# Internal use only
git_do_commit()
{
# Temporary equivalent of `git config --global commit.verbose = true`
local extra_args=(--verbose)
if [ -n "$message" ] ; then
extra_args+=(-m "$message")
fi
if [ $git_use_staged = y ] ; then
git commit "${extra_args[@]}"
elif [ $# -eq 0 -o "$*" = . ] ; then
git commit -a "${extra_args[@]}"
else
git commit "${extra_args[@]}" "$@"
fi
}
git_commit()
{
local transfer
if [ "x$1" = "x-l" ] ; then
shift
transfer=n
else
transfer=y
fi
if [ "x$1" = "x-q" ] ; then
# quick
shift
else
echo 'Running "git pull"...'
set -e
git pull
set +e
echo '...done.'
sleep 1
fi
if [ "x$1" = "x-a" ] ; then
# all (specified) files, even if new
shift
git_use_staged=y
git add -A "$@"
fi
set -e
git_do_commit "$@"
if [ $transfer = y ] ; then
git_transfer
fi
set +e
}
git_commit_paranoid()
{
local needs_merge
## if git status | grep -q '^nothing to commit'
# Figure out if a fast-forward merge is possible
git fetch
if git branch -v | grep -q '^\* [^ ]* [0-9a-f]* \[behind'
then
## needs_merge=y
git stash save
git merge FETCH_HEAD
git stash pop || echo "smooth: WARNING: unstaged changes didn't re-apply; fix manually and run 'git stash drop'" >&2
fi
git_do_commit "$@"
## if [ "$needs_merge" = y ] ; then
## fi
}
# If the branch doesn't exist, try to remote-track the equivalent branch from
# the current branch's remote.
git_smart_jump()
{
not_implemented # FIXME
}
# Merge the source branch's remote updates before merging it into this branch.
git_smart_merge()
{
not_implemented # FIXME
}
# Checks for a detached head, and if so, switches back to the master branch
git_update()
{
if ! git_current_branch > /dev/null
then
git checkout master
fi
git pull
}
svn_commit()
{
svn update && svn commit "$@"
}
hg_commit()
{
local transfer
if [ "x$1" = "x-l" ] ; then
shift
transfer=n
else
transfer=y
fi
if [ "x$1" = "x-q" ] ; then
# quick
shift
else
echo 'Running "hg pull"...'
hg pull -u
echo '...done.'
sleep 1
fi
set -e
if [ "x$1" = "x-a" ] ; then
# all (specified) files, even if new
shift
hg_do_commit --addremove "$@"
else
hg_do_commit "$@"
fi
if [ $transfer = y ] ; then
hg_transfer
fi
set +e
}
hg_do_commit() {
hg commit
}
hg_transfer() {
hg push
}
# $1=revs $2=rtype
mk_revopt()
{
case $2 in
svn) echo -r ${1/../:} ;;
hg) if [[ $1 == *..* ]] ; then echo -r ${1/../ -r } ; else echo -r $1 ; fi ;;
git) echo $1 -- ;;
esac
}
not_implemented()
{
echo "smooth: ERROR: action '$action' not implemented for $rtype" >&2
exit 4
}
# Outputs the command and its args (on separate lines) instead of running it
dispatch_debug()
{
pwd
eval echo \${r_$1[$action]}
shift
echo "$@"
echo --------
}
# Usage: dispatch <rtype> <arg> ...
dispatch()
{
local rtype=$1
shift
if [ $quiet = n ] ; then
echo "${bold}$PWD${normal} ($rtype):"
fi
if [ -z "$(eval echo \${r_$rtype[$action]})" ] ; then
echo "smooth: ERROR: action '$action' not supported for $rtype" >&2
exit 4
fi
## set -x
[ $debug -ge 2 ] && eval echo "'cmd:['\${r_$rtype[$action]} '$*]'"
eval \${r_$rtype[$action]} \
$(if [ -n "$revs" ] ; then mk_revopt "$revs" $rtype ; fi) \
'$extra_opts "$@"'
}
# Handle option if present (and hope pass-through options don't overlap with
# options taken by individual functions).
# Then immediately starts the next cycle of the loop that called this function.
maybe_store_option()
{
if [ "$no_more_options" != y ] ; then
if [[ "$1" != -- && "$1" == -?* ]] ; then
args+=($1)
continue
else
no_more_options=y
fi
fi
}
# Queries the arg (a relative directory) to see if it belongs to a work tree.
# If so, set $toplevel and $rtype. If not, exit with an error message & code.
set_toplevel()
{
# test for .svn first, and last (to account for un-added subdirectories)
if [ -d "$1"/.svn ] ; then
rtype=svn
toplevel=$(svn_toplevel "$1")
elif toplevel=$(cd "$1" && git rev-parse --show-toplevel 2> /dev/null) ; then
# TO-DO: see what happens with submodules
rtype=git
elif toplevel=$(cd "$1" && hg root 2> /dev/null) ; then
rtype=hg
elif toplevel=$(svn_toplevel "$1") ; then
rtype=svn
else
echo "smooth: ERROR: no revision control directory found in $1 or parents" >&2
exit 3
fi
}
# File/dir args don't make sense for some actions.
maybe_clear_args()
{
# The following actions don't take args; only $PWD is important:
# 'transfer', 'jump', 'branch', 'update', 'here', 'print-tags', 'object-dump'
if [[ $action == [tjbuh]* ]] ; then
args=()
fi
}
# Identify if the latest arg represents a change of toplevel, and if so, do
# what is necessary to finish the previous arg group and start a new one.
# Usage: maybe_start_arggroup <dir>
maybe_start_arggroup()
{
# If the action is 'move' (which doesn't use multiple arg groups), only
# handle the first one (i.e. set toplevel and instead just let the args up.
if [[ $action != [m]* || -z "$prev_toplevel" ]] ; then
set_toplevel "$1"
# Check if the arg represents a new or changed toplevel
if [ "$toplevel" != "$prev_toplevel" ] ; then
# Try to identify the start of a new group other than the first
if [ -n "$prev_toplevel" ] ; then
maybe_clear_args
# Dispatch previous group of args
(cd "$prev_toplevel" && $dispatch $prev_rtype "${args[@]}")
# Start the next arg group
args=()
fi
# Store information needed by the next call of this function that will be
# overwritten by its set_toplevel() call
prev_toplevel=$toplevel
prev_rtype=$rtype
fi
fi
}
# If it's a filename, find the directory
dir_only()
{
local dir
if [ -f "$1" ] ; then
dir=$(dirname "$1")
else
dir=$1
fi
echo "$dir"
}
# *** MAINLINE ***
# == dependency checks ==
if [ -z "$BASH_VERSION" ] ; then
echo "${self}: Error: script must be run as a program" >&2
exit 4
else
if ((BASH_VERSINFO[0] < 4 || BASH_VERSINFO[0] == 4 && BASH_VERSINFO[1] < 1)) ; then
echo "${self}: Error: bash v4.0+ required" >&2
exit 4
fi
fi
# == initialisation ==
# Fill the associative arrays (one for each repo type), mapping actions to commands.
# (_s.sh contains mappings generated from the docs by Makefile.)
declare -A r_git r_svn r_hg
. $(dirname "$0")/_s.sh
r_git[commit]=git_commit
r_git[c]=git_commit
r_git[commit-quick]="git_commit -q"
r_git[cq]="git_commit -q"
r_git[commit-quick-local]="git_commit -l -q"
r_git[cql]="git_commit -l -q"
r_git[commit-local]="git_commit -l"
r_git[cl]="git_commit -l"
r_git[commit-all]="git_commit -a"
r_git[ca]="git_commit -a"
r_git[commit-all-quick]="git_commit -q -a"
r_git[caq]="git_commit -q -a"
r_git[commit-all-quick-local]="git_commit -l -q -a"
r_git[caql]="git_commit -l -q -a"
r_hg[commit]=hg_commit
r_hg[c]=hg_commit
r_hg[commit-quick]="hg_commit -q"
r_hg[cq]="hg_commit -q"
r_hg[commit-quick-local]="hg_commit -l -q"
r_hg[cql]="hg_commit -l -q"
r_hg[commit-local]="hg_commit -l"
r_hg[cl]="hg_commit -l"
r_hg[commit-all]="hg_commit -a"
r_hg[ca]="hg_commit -a"
r_hg[commit-all-quick]="hg_commit -q -a"
r_hg[caq]="hg_commit -q -a"
r_hg[commit-all-quick-local]="hg_commit -l -q -a"
r_hg[caql]="hg_commit -l -q -a"
r_svn[commit]=svn_commit
r_svn[c]=svn_commit
r_svn[status]="svn status"
r_svn[s]="svn status"
r_svn[st]="svn status"
r_git[status]="git status"
r_git[s]="git status"
r_git[st]="git status"
r_hg[status]="hg status"
r_hg[s]="hg status"
r_hg[st]="hg status"
r_git[transfer]="git_transfer"
r_git[t]="git_transfer"
r_git[stage]="git add --all"
r_git[g]="git add --all"
r_git[p]=git_print_tags
r_git[print-tags]=git_print_tags
r_git[od]=git_object_dump
r_git[object-dump]=git_object_dump
r_git[u]=git_update
r_git[update]=git_update
r_git[i]="git clone --recursive"
r_git[init]="git clone --recursive"
# == Command-line parsing ==
# determine action, i.e. which smooth subcommand to run
case $self in
s|smooth)
if [ $# = 0 ] ; then
action=status
else
action=$1
shift
fi
;;
s-?*) action=${self#s-} ;;
*)
echo "smooth: ERROR: run as unknown name" >&2
exit 4
;;
esac
# (1st arg was already used as the action (and discarded), if necessary)
# -- defaults --
debug=0
quiet=n
git_use_staged=n
if [ -t 1 ] ; then
# by default, only use colour if stdout is a terminal
colour=y
# also, suppress headings for toplevel when git etc. will use a pager
if [[ $action == [dlo]* ]] ; then
quiet=y
fi
else
colour=n
fi
# -- option handling --
set -e
orthogonal_opts=$(getopt --shell=sh --name=smooth \
--options=+$allowed_options --longoptions=$allowed_long_options -- "$@")
cmd_line=$*
eval set -- "$orthogonal_opts"
set +e # getopt would have already reported the error
# Equivalent to '$debug -ge 2' (or 3 for the 2nd one), given that options
# haven't been parsed yet.
# (Only works if -d comes first on command line.)
[ x"$1" = x-d -a x"$2" = x-d ] && echo "options:$orthogonal_opts"
[ x"$1" = x-d -a x"$2" = x-d -a x"$3" = x-d ] && echo "command line: $cmd_line"
while [ x"$1" != x-- ] ; do
case "$1" in
-d) debug=$((debug + 1)) ;;
-f|--force) extra_opts="$extra_opts --force" ;;
-s) git_use_staged=y ;;
-r|--recursive) extra_opts="$extra_opts -r" ;;
-G|--git)
# git repo cloned from local or remote working dir
rtype=git
;;
-M|--mercurial)
# Mercurial repo
rtype=hg
;;
-q|--quiet) quiet=y ;;
-C) colour=y ;;
-o|--origin)
origin_name=$2
shift
;;
-b|--branch|--local-branch)
local_branch=$2
shift
;;
-B|--remote-branch)
remote_branch=$2
shift
;;
-m|--message)
message=$2
shift
;;
esac
shift # get rid of the option (or its arg if the inner shift already got rid it)
done
shift # get rid of the "--"
# -- argument handling --
# Check for a revision range, allowing for open-ended
if [[ "$1" == *[^/]..[^/]* || "$1" == ..[^/]* || "$1" == *[^/].. ]] ; then
if [[ $action != [dl]* ]] ; then
echo "smooth: ERROR: revision arguments make no sense here" >&2
exit 5
fi
revs=$1
shift
fi
# Check for a branch name for 'transfer', 'jump' or 'here'.
# For 'jump' and 'object-dump', the first arg is always a branch name.
# For 'transfer', 'print-tags' or 'here', the first arg is only a branch name
# if followed by "--".
if [[ $action == [tjhpo]* ]] ; then
[ $debug -ge 2 ] && echo '$#:' $# action: $action '$2:' $2
if [[ $action != [htp]* || ( $# -ge 2 && "x$2" == "x--" ) ]] ; then
# For some actions, this won't be done unless "--" is the second arg
# (signifying that the first arg is a branch name).
[ $debug -ge 1 ] && echo "(setting branch to $1)"
branch=$1
shift
fi
if [ "x$1" = "x--" ] ; then
shift
fi
fi
# == Preparation ==
if [ $debug -lt 3 ] ; then
dispatch=dispatch
else
dispatch=dispatch_debug
fi
if [ $colour = y ] ; then
bold=$(setterm -bold on)
normal=$(setterm -bold off)
fi
if [[ $action == d* && $git_use_staged = y ]] ; then
## case $rtype in
## git)
r_git[d]="git diff --staged"
r_git[diff]="git diff --staged"
## ;;
## *)
## echo "smooth: ERROR: option -s not supported for $rtype" >&2
## exit 10
## esac
fi
# == Processing ==
# Break the argument list into a number of separate commands, each having the
# same repository root.
declare -a args
args=()
# -- Identify separate arg groups --
# These might be useful:
# git rev-parse --is-inside-work-tree
# git rev-parse --show-prefix
# (returns the local path under the git repo root. (empty if you are at the git repo root))
case $action in
[e]*) # 'empty' (repo creation)
if [ $# -eq 0 ] ; then
echo "smooth: ERROR: repo type needed" >&2
exit 7
fi
rtype=$1
shift
$dispatch $rtype "$@"
;;
i*) # 'init' (repo clone)
url=$1
if [ -z "$rtype" ] ; then
case $url in
git://*|*.git|https://git*|http://git*|https://*.github.io|https://gist.github.com/*|git@*) rtype=git ;;
http://bitbucket.org/*|https://bitbucket.org/*) rtype=git ;;
ssh://git-codecommit*|git-codecommit*) rtype=git ;;
http*visualstudio.com/*) rtype=git ;;
svn+ssh:*|https://*/svn/*|http://*/svn/*) rtype=svn ;;
*) rtype=hg ;;
esac
fi
if [ -n "$origin_name" ] ; then
extra_opts="$extra_opts -o $origin_name"
fi
if [ -n "$remote_branch" ] ; then
extra_opts="$extra_opts --branch=$remote_branch"
fi
# check if the last argument is an existing directory
if [ -d "${@: -1}" ] ; then
# If it was, cd into it and don't pass it to dispatch()
echo "smooth: Changing directory to ${@: -1}"
cd "${@: -1}"
# strip off the last argument when calling dispatch()
let num_subtract_one=$(($# - 1))
$dispatch $rtype "${@:1:$num_subtract_one}"
else
# Otherwise, assume that no directory was given or that the last
# argument is the directory to be created
$dispatch $rtype "$@"
fi
;;
n*) # 'new-tag*'
# Usage: s new-tag [<option>...] <dir> <tagname> [<commit> | <object>]
for arg ; do
maybe_store_option "$arg" # Might start the next loop cycle
# Set the toplevel based on the first non-option arg, but otherwise ignore it.
if [ -z "$toplevel" ] ; then
if [ ! -e "$arg" ] ; then
echo "smooth: ERROR: '$arg' does not exist" >&2
exit 2
fi
set_toplevel "$(dir_only "$arg")"
else
# Assumes that the second non-option arg is the tag name
if [ -z "$tagname" ] ; then
tagname=$arg
fi
args[${#args[@]}]=$arg
fi
done
(cd "$toplevel" && $dispatch $rtype "${args[@]}")
;;
*)
for arg ; do
maybe_store_option "$arg" # Might start the next cycle
if [[ $action != [m]* && ! -e "$arg" ]] ; then
echo "smooth: ERROR: '$arg' does not exist" >&2
exit 2
fi
maybe_start_arggroup "$(dir_only "$arg")"
# Append the current argument to the existing or new list, but first
# strip off the path fragment between current directory and the toplevel
# (avoid using readlink when the arg is a symlink as this translates
# symlinks to referents)
if [ -L "$arg" ] ; then
arg_fullpath=$(readlink -f "$(dirname "$arg")")/${arg##*/}
else
arg_fullpath=$(readlink -f "$arg")
fi
if [ "$arg_fullpath" = "$toplevel" ] ; then
args[${#args[@]}]=.
else
args[${#args[@]}]=${arg_fullpath#$toplevel/}
fi
done
# set a default in case there were no args or the action takes non-file/dir args
if [ $# -eq 0 ] ; then
set_toplevel .
else
maybe_clear_args
fi
# Dispatch final group of args, if any
(cd "$toplevel" && $dispatch $rtype "${args[@]}")
;;
esac