BeHuman

Il m'arrive souvent de devoir extraire une sous chaine d'une chaine de cractères. Pour cela il existe une panoplie d'outils permettant de le faire en ligne de commande. Cependant j'aime me créer mes propres scripts suivant ma logique quotidienne .

Aide:

Script bash:

#!/bin/bash

function _help () {
    echo "STR version 0.1 by BeHuman
GNU/GPL v3
Usage:
    str [OPTION] [PARAMS]

Options:
    -h          Help

    -l          At left
    -pl         At primary left

    -r          At right
    -pr         At primary right

    -b          Between two strings

    -R          String replace

    -len        Length
    -ler        Length Ereg

    -p          At position

Examples:
    str -l \"hello world\" \"o*\"
        return \"hello w\"
    str -pl \"hello world\" \"o*\"
        return \"hell\"

    str -r \"hello world\" \"*o\"
        return \"rld\"
    str -pr \"hello world\" \"*o\"
        return \" world\"

    str -b \"hello world\" \"*e\" \"o*\"
        return \"llo w\"

    str -R \"hello world\" \"ell\" \"a\"
        return \"hao world\"

    str -len \"hello world\"
        return 11
    str -ler \"hello world\" 'h[a-z]*.w'
        return 7

    str -p \"hello world\" \"or\"
        return 7"
}

#functions
function length () #Length
{
    str=$1
    echo ${#str}
}

function ereg_length () #length ereg
{
    expr match "$1" "$2"
}

function position_str () #index
{
    str1="$1"
    pat=$2
    str="${str1%%$pat*}"
    [[ $str = $str1 ]] && echo -1 || echo ${#str}
}

function left_str () #left
{
    str="$1"
    pat=$2
    echo "${str%$pat}"
}

function right_str () #right
{
    str="$1"
    pat=$2
    echo "${str##$pat}"
}

function pleft_str () #left
{
    str="$1"
    pat=$2
    echo "${str%%$pat}"
}

function pright_str () #right
{
    str="$1"
    pat=$2
    echo "${str#$pat}"
}

function between_str () #right
{
    str1="$1"
    pat1=$2
    pat2=$3
    str2="${str1#$pat1}"
    echo "${str2%$pat2}"
}

function replace_str () #right
{
    str="$1"
    pat1=$2
    pat2=$3
    echo "${str//$pat1/$pat2}"
}

#Main Start
if [ "$1" == "-h" ];then
    _help
elif [ $# -ge 1 ]; then 
    if [ "$1" == "-len" ];then
        length "$2"
    elif [ "$1" == "-ler" ];then
        ereg_length "$2" "$3"
    elif [ "$1" == "-b" ];then
        between_str "$2" "$3" "$4"
    elif [ "$1" == "-l" ];then
        left_str "$2" "$3"
    elif [ "$1" == "-r" ];then
        right_str "$2" "$3"
    elif [ "$1" == "-pl" ];then
        pleft_str "$2" "$3"
    elif [ "$1" == "-pr" ];then
        pright_str "$2" "$3"
    elif [ "$1" == "-p" ];then
        position_str "$2" "$3"
    elif [ "$1" == "-R" ];then
        replace_str "$2" "$3" "$4"
    else
        _help
    fi
else
    _help
fi

voilà donc pour ce petit script. ++