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#!/bin/sh
#set -x
REPLACE_ALL=0
DEST_DIR=$HOME
DOTFILES_DIR=$HOME/.dotfiles
HOSTNAME=`hostname -s`
HOST_FILES=$DOTFILES_DIR/host-$HOSTNAME
DEBUG=:
PRINT=echo
VERBOSE=:
PROMPT=echo
DIRSTACK=":$DOTFILES_DIR"
MKDIR=mkdir
LN=ln
RM=rm
pushdir() {
DIRSTACK="$DIRSTACK:$PWD/$1"
$DEBUG "cd'ing to $1 from `pwd` with stack $DIRSTACK"
cd $1
}
popdir() {
current=`echo $DIRSTACK | sed -e 's/.*://g'`
prior=`echo $DIRSTACK | sed -e "s|:$current$||" | sed -e 's/.*://g'`
DIRSTACK=`echo $DIRSTACK | sed -e 's/:[^:]*$//'`
$DEBUG "cd'ing to $prior from `pwd` with stack $DIRSTACK"
cd $prior
}
build_path() {
local dest=$1
local file=$2
local dotted=$3
if [ $dotted -eq 1 ]; then
echo $dest/$file
else
echo $dest/.$file
fi
}
link_dir() {
local dir=$1
local dest_dir=$2
local dotfiles_dir=$3
local dotted=$4
local dest_path=`build_path $dest_dir $dir $dotted`
$VERBOSE "recurring on $dest_path"
$MKDIR -p $dest_path
pushdir $dir
for f in *; do
$DEBUG "handling the file $f"
handle_file $f $dest_path $3/$1 1
done
popdir
}
link_file() {
local file=$1
local dest_dir=$2
local dotfiles_dir=$3
local dotted=$4
local dest_file=`build_path $dest_dir $file $dotted`
$PRINT "linking $dest_file"
if [ -h $dest_file ]; then
rm -f $dest_file
fi
$LN -s $dotfiles_dir/$file $dest_file
}
replace_file() {
local file=$1
local dest_dir=$2
local dotfiles_dir=$3
local dotted=$4
local dest_file=`build_path $dest_dir $file $dotted`
$RM -rf $dest_file
link_file $file $dest_dir $dotfiles_dir $dotted
}
is_identical() {
diff -q -s $1 $2 > /dev/null
}
handle_file() {
local file=$1
local dest_dir=$2
local dotfiles_dir=$3
local dotted=$4
$DEBUG handle_file $1 $2 $3 $4
if [ ! -e $file ]; then
$VERBOSE "skipping non-existent file $file"
elif [ -d $file ]; then
link_dir $file $dest_dir $dotfiles_dir $dotted
else
dest_file=`build_path $dest_dir $file $dotted`
if [ -e "$dest_file" ]; then
if is_identical $file $dest_file; then
$VERBOSE "identical $dest_file"
elif [ $REPLACE_ALL -eq 1 ]; then
replace_file $file $dest_dir $dotfiles_dir $dotted
else
$PROMPT "overwrite ${dest_file}? [ynaq]"
read overwrite
case $overwrite in
a)
REPLACE_ALL=1
replace_file $file $dest_dir $dotfiles_dir $dotted
;;
y) replace_file $file $dest_dir $dotfiles_dir $dotted
;;
q) exit 1
;;
*) $VERBOSE "skipping $dest_file"
;;
esac
fi
else
link_file $file $dest_dir $dotfiles_dir $dotted
fi
fi
}
metafile() {
[ x$2 = 'xhost-' -o x$3 = 'xtag-' -o x$1 = "xRakefile" -o x$1 = "xinstall" ]
}
handle_command_line() {
arg_tags=""
verbosity=0
while getopts qvt: opt; do
case "$opt" in
t) arg_tags="$arg_tags $OPTARG";;
v) verbosity=$(($verbosity + 1));;
q) verbosity=$(($verbosity - 1));;
esac
done
shift $(($OPTIND-1))
if [ $verbosity -ge 2 ]; then
DEBUG=echo
VERBOSE=echo
PRINT=echo
elif [ $verbosity -eq 1 ]; then
DEBUG=:
VERBOSE=echo
PRINT=echo
elif [ $verbosity -eq 0 ]; then
DEBUG=:
VERBOSE=:
PRINT=echo
else
DEBUG=:
VERBOSE=:
PRINT=:
fi
if [ "x$arg_tags" != "x" ]; then
TAGS=$arg_tags
fi
FILES=$@
}
if [ -e $HOME/.rcrc ]; then
. $HOME/.rcrc
fi
handle_command_line $*
cd $DOTFILES_DIR
for file in ${FILES:-*}; do
host_portion=`echo $file | sed -e 's/host-.*/host-/'`
tag_portion=`echo $file | sed -e 's/tag-.*/tag-/'`
if ! metafile $file $host_portion $tag_portion; then
handle_file $file $DEST_DIR $DOTFILES_DIR 0
fi
done
cd $DOTFILES_DIR
if [ -d $HOST_FILES ]; then
pushdir `basename $HOST_FILES`
for file in ${FILES:-*}; do
handle_file $file $DEST_DIR $HOST_FILES 0
done
popdir
fi
cd $DOTFILES_DIR
for tag in $TAGS; do
if [ -d tag-$tag ]; then
pushdir `basename tag-$tag`
for file in ${FILES:-*}; do
handle_file $file $DEST_DIR $DOTFILES_DIR/tag-$tag 0
done
popdir
fi
done
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