OpenEuphoria

Re: GETTING FULL PATHS

• Posted by Jacques Deschenes <desja at QUEBECTEL.COM> Jan 29, 1997
• 1295 views

At 15:47 29-01-97 PST, you wrote:
>---------------------- Information from the mail header -----------------------
>Sender:       Euphoria Programming for MS-DOS <EUPHORIA at
>MIAMIU.ACS.MUOHIO.EDU>
>Poster:       David Cuny <HW1.DCUNY at HW1.CAHWNET.GOV>
>Subject:      GETTING FULL PATHS
>-------------------------------------------------------------------------------
>
>is there a simple way to convert a string to a full path in Euphoria?
>for example, the user could type in:
>
>   "..\foo\bar"
>
>i know that you can use dir() to determine (1) that the path is real,
>and (2) that the path is either a directory or a file. but i need to
>convert the string to a full path, such as:
>
>   "c:\stuff\bletch\foo\bar\"
>
>i could parse the thing by hand, but it would be easier if there was
>a function that would expand it automatically. any suggestions?
>
>thanks.
>
>-- david cuny
>

Hi! David,
  If I understood your question,   this could be an answer.


include file.e

function FindLastChar(integer char, sequence target)
-- search target for a character starting search from end of target
integer l, pos
sequence inverse
    inverse=""
    l = length(target)
    for i = 0 to l-1  do
        inverse = inverse & target[l-i]
    end for
    pos = find(char,inverse)
    if not pos then
        return 0
    else
        return l - pos
    end if
end function --FindLastChar()

function ExpandPath(sequence DottedPath)
-- expand dotted path to full path
-- limitation: only good for one level of dotting.(i.e. parent dir)

integer pos
sequence Current, Parent
    pos = match("..",DottedPath)
    if pos != 1 then
        return DottedPath
    end if
    Current = current_dir()
    Parent = Current[1..FindLastChar('\\',Current)]
    return Parent & DottedPath[3..length(DottedPath)]
end function --ExpandPath()

constant DotDir="..\\foo\\bar"

puts(1,ExpandPath(DotDir))

Jacques Deschenes
Baie-Comeau, Quebec
Canada
desja at quebectel.com