Question

This file demonstrates a typical @installhook

it does exactly the same thing as if you would have called apps/install GoFukUrself

and this file did not exist.

This system exists so we can copy multiple files, rather than just a single file if

need be. Your file does not have to be a shell file, it can be any script or program.

Answer 1

# where: [$] = NAME of a string var, [%] IMMEDIATE VALUE

# example:
# declare container lookfor; declare -i offset;
# .
# .
# string.find container lookfor $offset;

shopt -s extglob    # activate extended regular expression parsing.

declare result;

# offset is optional. -% = undef.
function string.find { : [$]source [$]find [%]offset

    local buffer=${!1} find=${!2} empty='';
    local -i offset=${3:-0};

    [[ $offset -eq 0 ]] || buffer=${buffer:$offset};

    [[ -n "$buffer" ]] || { result=$empty; return 1; }

    #  Matches at front of string?
    [[ "$buffer" =~ ^("$find") ]] && { result=0; return 1; }

    [[ "$buffer" =~ ^(.*|$)?("$find")(.+|$) ]] && {

        let buffer=${#BASH_REMATCH[1]}+$offset;

    } || {

        result=$empty; return 1;

    }

    result=$buffer;

}

function string.find.all { : [$]source [$]find

    local source=${!1} find=${!2} foundlist='' offset=0;

    while string.find source find $offset; do

        foundlist+="$result ";
        let offset=$result+${#find};

    done

    echo $foundlist

}