Re: [PATCH 5/4] dracut-functions: conv/normalize minor corrections

[Harald Hoyer <harald-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

On 08.10.2011 00:20, Michal Soltys wrote:
> mostly with reference to earlier commit:
> 
> - bash doesn't need unsetting locals
> - make normalize_path() a bit faster, also make sure we remove all
>   trailing slashes
> - normalize paths before tests
> 
> Signed-off-by: Michal Soltys <soltys-R61QfzASbfY@public.gmane.org>
> ---
>  dracut-functions |   22 ++++++++++------------
>  1 files changed, 10 insertions(+), 12 deletions(-)
> 
> diff --git a/dracut-functions b/dracut-functions
> index 12dfa70..ce593c9 100755
> --- a/dracut-functions
> +++ b/dracut-functions
> @@ -83,31 +83,29 @@ print_vars() {
>  }
>  
>  normalize_path() {
> -    p=$1
> -    while [[ ${p#*//*} != $p ]]; do
> -        p=${p/\/\///}
> -    done
> -    echo $p
> +    shopt -q -s extglob
> +    set -- "${1//+(\/)//}"
> +    shopt -q -u extglob
> +    echo "${1%/}"
>  }
>  
>  convert_abs_rel() {
> -    local __current __absolute __abssize __cursize __newpath="" __oldifs
> -    local -i __i __level=0
> +    local __current __absolute __abssize __cursize __newpath __oldifs
> +    local -i __i __level
>  #    PS4='${BASH_SOURCE}@${LINENO}(${FUNCNAME[0]}): ';
>  
> +    set -- "$(normalize_path "$1")" "$(normalize_path "$2")"
> +
>      # corner case #1 - self looping link
>      [[ "$1" == "$2" ]] && { echo "${1##*/}"; return; }
>  
>      # corner case #2 - own dir link
>      [[ "${1%/*}" == "$2" ]] && { echo "."; return; }
>  
> -    __current=$(normalize_path "$1")
> -    __absolute=$(normalize_path "$2")
> -
>      __oldifs="$IFS"
>      IFS="/"
> -    __current=($__current)
> -    __absolute=($__absolute)
> +    __current=($1)
> +    __absolute=($2)
>      IFS="$__oldifs"
>  
>      __abssize=${#__absolute[@]}

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