commit 1d9cd3a9c43078693787fe6d3b6bc33b07665715
Author: Yorick Barbanneau <ephase@xieme-art.org>
Date:   Sun Nov 10 02:01:43 2019 +0100

    Fist commit

diff --git a/README.md b/README.md
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+dotinstall - manage dotfiles
+----------------------------
+
+`dotinstall` is another little script made for install or uninstall dotfiles by
+creating symbolic link. You need to provide a boostrap script for it.
+
+## How to use
+
+```
+dotinstall bootstrap
+```
+
+The script can use git to retrieve a repository :
+
+```
+dotinstall https://git.example.com/user/repo.git
+```
+
+You can uninstall the dotfiles by adding the `uninstall` keyword before the
+bootstrap file :
+
+```
+dotinstall uninstall bootstrap
+```
+
+## Boostrap file syntax
+
+`bootstrap` is a simple bash script sourced by `dotinstall`. The `bootstrap`
+file contains instructions and can call functions and use variables from
+dotinstall:
+
+### functions
+
+#### bin_check
+
+This function check if binary file is avaible in the `PATH`.
+
+ - **input** : list of executable separated by spaces"
+ - **return** : no value, but exit the entire script if a executable is not
+     found with exit code 128
+
+```
+bin_check "ls mv git"
+```
+
+#### conf_process_dirs
+
+Process a directory that contains others directories an symblink them to the
+destination folder :
+
+ - **input** :
+     - `$1` : source directory
+     - `$2` : destination directory
+ - **return** : no value, exit the funtion if there is an error on path
+
+```
+conf_process_dirs "${repository}/config" "${HOME}/.config"
+```
+
+#### conf_process_files
+
+Process a directory than contains files and symblink them to the destination
+folder :
+
+ - **input** :
+     - `$1` : source directory
+     - `$2` : destination directory
+ - **return** : no value, exit the funtion if there is an error on path
+
+```
+conf_process_dirs "${repository}/zshrc" "${HOME}"
+```
+
+#### bin_install
+
+Symblink an executable file to the `~/.local/bin` folder.
+
+ - **input** : 
+     - `$1` : source file
+ - **return** : no value, exit the function if the source file not exist or is
+     not executable.
+
+```
+bin_install "bin/check_mails.sh
+```
+
+#### service_install
+
+Install a systemd service as user, can be useful for timers for example :
+
+ - **input** : 
+     - `$1` : source file
+     - `$2` : 1 if service must be activated
+ - **return** : no value, but exit the function if source file is not found or
+     the service can't be activated
+
+```
+service_install "services/myservice.service" 1
+```
+
+### Avaible variables
+
+ - `$repository` : the root folder of the repository
+ - `OVERWRITE_DIRECTORY` : if `1`, the script will erase a directory and replace
+     it with a symblink if needed. For example if `~/.vim/` exist, but your
+     boostrap file need to create a symblink from `~/.config/dotrepo/conf/vim`
+     to `~/.vim`, it will be erased fist. If 0, an error message will be
+     displayed.
+ - `OVERWRITE_FILE` : do the same with file
+
+## Licence
+
+This softeware is licenced under the GNU-GPL 3 licence, you can found a copy of
+the licence [here](https://www.gnu.org/licenses/gpl-3.0.en.html).
diff --git a/src/dotinstall.sh b/src/dotinstall.sh
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index 0000000..43df0fa
--- /dev/null
+++ b/src/dotinstall.sh
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+#!/usr/bin/env bash
+
+# Personnal Dotfiles install script
+
+BIN_DIRECTORY="${HOME}/.local/bin/"
+LIB_DIRECTORY="${HOME}/.local/lib/"
+SYD_DIRECTORY="${HOME}/.config/systemd/user"
+DOTREPO="${HOME}/.config/dotrepo/"
+
+
+# DEFAULT VALUES
+OVERWRITE_DIRECTORY=0
+OVERWRITE_FILE=0
+
+repository=""
+install=1
+
+usage ()
+{
+    printf "\nUSAGE\n"
+    printf "\n"
+    printf "%s <bootstrap_file>\n" "$0"
+    printf "boostrap_file : file contain variables\n"
+}
+
+die ()
+{
+    # Exit script
+    # $1 : error message before quit
+    # $2 : exit code - default 99
+    # $3 : 1 if print usage 
+
+    [ -z $2 ] && $2=99
+    printf "\e[31mFATAL : %s\e[0m\n" "$1"
+    [ $3 == 1 ] && usage
+    exit $2
+}
+
+error ()
+{
+    # print error message in red
+    # $@ : message
+
+    printf "\e[31m%s\e[0m\n" "$*"
+}
+
+private:get_bootstrap_path ()
+{
+    # this function return the absolute path of the bootstrap file
+    # $* : path of bootstrap file
+
+    # If the path begin with /, this is an absolute part
+    if [[ "$*" =~ ^/[[:graph:]]*$ ]]
+    then
+        repository="$(dirname $*)"
+        return
+    fi
+
+    local relative_path="$*"
+    local current_path="$(pwd)"
+    while [[ $relative_path =~ ^../[[:graph:]]*$ ]]
+    do
+            printf "We found ..\n"
+            relative_path="${relative_path##../}"
+            current_path="${current_path%/*}"
+    done
+    repository="$(dirname "${current_path}/${relative_path}")"
+}
+
+private:remove_symblink()
+{
+    # Remove a symblink
+    # $* source
+
+    printf "  -> Remove symblink %s : " "$symblink"
+    if [ -L "$*" ]
+    then
+        local ret;
+        ret=$(rm "$*" 2>&1)
+        [ $? -ne 0 ] && { error "can't remove : $ret"; return; }
+    elif [ ! -f "$*" ]
+    then
+        error "$* not exist"
+        return
+    else
+        error "$* is not a symblink"
+    fi
+    printf "\e[32mdone\e[0m\n"
+}
+
+private:create_symblink ()
+{
+    # Create a symblink
+    # $1: source
+    # $2: destination
+
+    local source="$1"
+    local dest="$2"
+    
+    printf "  -> Create a symblink from %s : " "$source"
+
+    # If dest is a symbolic link, delete it.
+    if [ -L "$dest" ]
+    then
+        rm -rf "$dest"
+    # If source is a directory
+    elif [ -d "$source" ]
+    then
+        if [ -d "$dest" ]
+        then
+            if [ $OVERWRITE_DIRECTORY -ne 0 ]
+            then
+                error "can't overwrite destination"
+                return
+            else
+                rm -rf $dest
+            fi
+        elif [ -e $dest ]
+        then
+            error "destination exist but is not a directory"
+            return
+        fi
+
+    # If source is a file
+    elif [ -f "$source" ]
+    then
+        if [ -f "$dest" ]
+        then
+            if [ $OVERWRITE_FILE -ne 0 ]
+            then
+                error "can't overwrite destination"
+                return
+            else
+                rm -rf "$dest"
+            fi
+        elif [ -e "$dest" ]
+        then
+            error "$dest exist but is not a file"
+            return
+        fi
+
+    fi
+    ln -s "$source" "$dest"
+    printf "\e[32mdone\e[0m\n"
+}
+
+private:clone_repository ()
+{
+    # Clone a git repository and test if it has a bootstrap file
+    # $* url
+    # return : local directory
+
+    local ret
+    ret=$(git clone -q "$1" "${2}" 2>&1)
+    [[ $? -ne 0 ]] && die "Can't clone_repository : $ret" 20 0
+}
+
+process_dirs () {
+
+    # Process a directory than contains subdir, create symblink from each subdir
+    # to the destination.
+    #
+    # $1: source directory
+    # $2: destination directory
+
+    local dest="${repository}/$1"
+    printf "\nProcess directory %s\n" "$1"
+
+    [ ! -d "$dest" ] && { error "  -> source is not a directory"; return; }
+    [ ! -d "$dest" ] && { error "  -> destination is not a directory"; return; }
+
+    while read d
+    do
+        if [ $install -eq 1 ]
+        then
+            private:create_symblink "$d" "${2}/$(basename "$d")"
+        else
+            local symblink="${2}/$(basename ${d})"
+            private:remove_symblink "$symblink"
+        fi
+
+    done < <(ls -d -1 "${dest}"/*/)
+}
+
+process_files () {
+
+    # Process a directory than contains config files, create symblink from each
+    # files to the destination.
+    # $1: source directory
+    # $2: destination directory
+    
+    local dest="${repository}/$1"
+    printf "Process files from directory %s:\n" "$1"
+    
+    [ ! -d "$dest" ] && { error "  -> source is not a directory"; return; }
+    [ ! -d "$dest" ] && { error "  -> destination is not a directory"; return; }
+
+    while read d
+    do
+        if [ $install -eq 1 ]
+        then
+            private:create_symblink "$d" "$2/$(basename "$d")"
+        else
+            local symblink="${2}/$(basename ${d})"
+            private:remove_symblink "$symblink"
+        fi
+
+    done < <(ls -1 "$dest")
+}
+
+
+install_service ()
+{
+    # Install an user service with systemd and activate it
+    # $1 file
+    # $2 1 to Activate the service
+
+    local source="${repository}/$1"
+    local ret
+    [ ! -f "$source" ] && { error "$1 not found"; return; }
+    local basename=$(basename "$source") 
+    if [ $install -eq 1 ]
+    then
+        printf "\nInstall service %s :\n" "$source"
+        private:create_symblink "$source" "${SYD_DIRECTORY}/${basename}"
+
+        # activate service
+        if [ $2 ]
+        then
+            printf "  -> Activate $basename : "
+            ret=$(systemctl --user enable ${basename} 2>&1)
+            [[ $? -ne 0 || ! $(systemctl --user is-enabled $basename) ]] && { error "$ret"; return; }
+            printf "\e[32mdone\e[0m\n"
+        fi
+    else
+        printf "\nUninstall service %s :\n" "$source"
+        #Deactivate service
+        if [ $1 ]
+        then
+            printf "    -> Deactivate $basename : "
+            ret=$(systemctl --user disable ${basename} 2>&1)
+            [[ $? -ne 0 ]] && { error "$ret"; return; }
+            printf "\e[32mdone\e[0m\n"
+        fi
+    fi
+
+}
+
+check_bin ()
+{
+    # Check if an executable exist
+    # $1 executables separated with spaces
+
+    printf "Checking required programs :\n"
+    for p in $1
+    do
+        printf "  -> %s:" "$p"
+        command -v $p >/dev/null 2>&1 || die "not found" 128
+        printf " \e[32mfound\e[0m\n"
+    done
+}
+
+install_bin ()
+{
+    # Install a binary / script file as executable
+    # Via a symbolic link
+    # $1 : path to script
+
+    local source="${repository}/${1}"
+    local dest="${BIN_DIRECTORY}/$(basename $1)"
+    
+    printf "\nProcess executable :\n"
+    [ ! -f "$source" ] && { error "$source is not a file"; return; }
+    [ ! -x "$source" ] && { error "$source not executable "; return; }
+    
+    if [ $install -eq 1 ]
+    then
+        private:create_symblink "$source" "$dest"
+    else
+        private:remove_symblink "$dest"
+    fi
+}
+
+## create bin directory
+[ ! -d $BIN_DIRECTORY ] && mkdir -p $BIN_DIRECTORY || printf "bin exist\n"
+
+# Test parameters : we need to know if it's a git repo or a file
+[[ $1 == "uninstall" || $1 == "-u" ]] && { install=0; printf "Activate uninstall mode\n"; shift; }
+echo $install
+[ "$*" = "" ] && die "You must specify a bootstrap file" 10 1
+
+if [[ $* =~ ^https://.*\.git$ || $* =~ ^ssh://.*\.git$ ]]
+then
+    bin_check "git"
+    
+    # Check
+    localdir="${DOTREPO}/$(basename $* .git)"
+    [ -d "$localdir" ] && die "destination folder for git repository already exist" 21 0
+    
+    private:clone_repository "$*" "$localdir"
+    if [ -f "${localdir}/bootstrap" ]
+    then
+        $0 "${localdir}/bootstrap"
+        exit $?
+    else
+        die "Can't find a \`boostrap\` file in ${repo}" 22 0
+    fi
+else
+    [ ! -f "$*" ] && die "$* does not exist" 10 1
+    private:get_bootstrap_path "$*"
+
+    # Include bootstrap
+    source $*
+fi
+exit 0