World: r4wp

has anyone written parse rules for phone numbers?   I need to setup 
a set of rules for international numbers, local numbers, cell numbers, 
1800 etc for use in asterisk and prevent users from making toll calls 
unless authorise

To make it easier I will strip out alll non-digits first

I guess i should just make a rule for each type of call and then 
combine them.

Here's something for US phone numbers I did a long time ago

set 'parse-phone-num func [
        num [string!]
        /local  digit digits sep _ext_  ch nums pin ext
    ] [
        digit:  charset "0123456798"
        digits: [some digit]
        sep:    charset "()-._"
        _ext_:  ["ext" opt "." | "x"]

        nums: copy ""
        rules: [
            any [
                some [sep | copy ch digit (append nums ch)]
                | _ext_ copy ext digits
                | "pin" copy pin digits
            ]
            end
        ]
        either parse trim num rules 
            [reduce ['num nums 'ext ext 'pin pin]]
            [none]
    ]

    set 'well-formed-phone-number? func [num /local data] [
        either none? data: parse-phone-num num [false] [
            any [
                found? find [7 10] length? data/num
                all [11 = length? data/num  data/num/1 = #"1"]
            ]
        ]
    ]

And a formatter that goes the other way:

set 'format-phone-number func [
        num [string! object!] "String or object with /text value"
        /def-area-code area-code [string! integer!]
        /local left right mid obj res
    ] [
        left:  func [s len][copy/part s len]
        right: func [s len] [copy skip tail s negate len]
        mid:   func [s start len][copy/part at s start len]

        if object? num [obj: num  num: obj/text]

        res: either data: parse-phone-num num [
            ; discard leader if it's there.
            if all [11 = length? data/num  data/num/1 = #"1"] [
                data/num: right data/num 10
            ]
            rejoin [
                rejoin switch/default length? data/num [
                    7  [ compose [

                        (either area-code [rejoin ["(" area-code ") "]][])
                        left data/num 3 "-" right data/num 4
                    ]]
                    10 [[
                        "(" left data/num 3 ") "
                        mid data/num 4 3 "-" right data/num 4
                    ]]
                ][[data/num]]

                reduce either data/ext [[" ext" trim data/ext]] [""]

                reduce either data/pin [[" pin" trim data/pin]] [""]
            ]
        ][num]

        if obj [
            obj/text: res
            attempt [if 'face = obj/type [show obj]]
        ]
        res
    ]

Ok, so this checks for legally formatted numbers.  Or formats numbers 
into the common format.

need to reboot .. clipboard not working.  When is openme coming :(

Yes. :-)

p: format-phone-number "1800-123456"
== "(180) 012-3456"

might need a ittle tweaking for international numbers

How are international numbers formatted?  +181812345678  ?

As I said, it was just for US phone numbers. The +1 was not included, 
since it wasn't meant for dialing.

If you're asking how they're formatted in general, it depends.

ok, so always 3 numbers in the first group if not international?

Yes.

( we use 2 numbers for the first group unless it's cellular  when 
it's 3 or 4 )

can a number start with 1 ?

IIRC, some places use 4, grouping them into 2 sets of 2 for the area 
code.

ohh ....

I guess users are going to have to make their own parse rules then

The code I posted doesn't do any validation according to what might 
work in the real world when dialed.

http://msdn.microsoft.com/en-us/goglobal/bb688129
http://en.wikipedia.org/wiki/Telephone_numbering_plan


I think the number of options are limited enough that you could get 
pretty far, but a custom system would be great. If you could template-ize 
things, users could submit their templates for others to use, or 
to be integrated into the default system.

These rules are going into a cgi script to allow local and national 
dialiing (and emergency) but stop international

Ah, there you go. Validate against your local and national rules 
and fail everything else.

yep

Not sure if this will help, but maybe:

parse-int-values: func [

    "Parses and returns integer values, each <n> chars long in a string."
    input [any-string!]

    spec [block!] "Dialected block of commands: <n>, skip <n>, done, 
    char, or string"
    /local
        gen'd-rules ; generated rules
        result      ; what we return to the caller

        emit emit-data-rule emit-skip-rule emit-literal-rule emit-data
        digit= n= literal=
        int-rule= skip-rule= literal-rule= done= build-rule=
        data-rule skip-rule
][

    ; This is where we put the rules we build; our gernated parse rules.
    gen'd-rules: copy []
    ; This is where we put the integer results
    result: copy []

    ; helper functions

    emit: func [rule n] [append gen'd-rules replace copy rule 'n n]
    emit-data-rule: func [n] [emit data-rule n]
    emit-skip-rule: func [n] [emit skip-rule n]
    emit-literal-rule: func [value] [append gen'd-rules value]
    emit-data: does [append result to integer! =chars]

    ; Rule templates; used to generate rules

    ;data-rule: [copy =chars n digit= (append result to integer! =chars)]
    data-rule: [copy =chars n digit= (emit-data)]
    skip-rule: [n skip]

    ; helper parse rules
	digit=: charset [#"0" - #"9"]
    n=: [set n integer!]
    literal=: [set lit-val [char! | any-string!]]

    ; Rule generation helper parse rules
    int-rule=: [n= (emit-data-rule n)]
    skip-rule=: ['skip n= (emit-skip-rule n)]
    literal-rule=: [literal= (emit-literal-rule lit-val)]
    done=: ['done (append gen'd-rules [to end])]

    ; This generates the parse rules used against the input

    build-rule=: [some [skip-rule= | int-rule= | literal-rule=] opt done=]


    ; We parse the spec they give us, and use that to generate the

    ; parse rules used against the actual input. If the spec parse

    ; fails, we return none (maybe we should throw an error though);

    ; if the data parse fails, we return false; otherwise they get
    ; back a block of integers. Have to decide what to do if they
    ; give us negative numbers as well.
    either parse spec build-rule= [
        either parse input gen'd-rules [result] [false]
    ] [none]
]

Example: parse-int-values "1234567890" [2 4 skip 2 2]

parse-int-values "(123) 456-7890" [#"(" 3 ") " 3 #"-" 4]

http://en.wikipedia.org/wiki/Telephone_numbers_in_New_Zealand

learnt something new .. 02 is for Scott Base in Antarctica ;)

We had a REBOLer who worked there some years back. ...what was his 
name...

G. Scott Jones? Now it's gonna bother me. :-\

yeah... though he won't be in Scott Base but the USA base there

Still probably a local call from Scott Base though. ;-)

maybe not .. it may be routed thru the USA :)

zero: charset [ #"0" ]
digit: charset [ #"0" - #"9" ]
digits: [ some digit ]
local-number: charset [ #"3" #"4" #"6" #"9" ]
not01-number: charset [ #"2" - #"9" ]

national-rule: [ zero local-number not01-number digits]
local-rule: [ not01-number digits ]
emergency-rule: [ "111" ]

; toll free numbers are 0800 and 0508
toll-free: [ zero [ "800" | "508" ] digits ]

; directory assistance 018, 0172,
directory-assistance: [ "01" [ "8" | "72" ]]
 
; faults 120, 125 and business 126
faults: [ "12" [ "0" | "5" | "6" ]]

; cellular are 021, 022, 027, 028, 029
cellular-rule: [ "02" digits ]

; international 00 - country code - number
international-rule: [[ "00" | "+" ] digits ]

allowed-phone-rule: [
	local-rule |
	national-rule |
	emergency-rule |
	toll-free |
	directory-assistance |
	faults |
	cellular-rule
]

all-phone-rule: [ allowed-phone-rule | international-rule ]

hope that covers all of my dialling rules

Also check E164 formatting:
http://en.wikipedia.org/wiki/E.164
and
http://www.wtng.info/wtng-tt.html

In PHP I had a Unix timestamp, which I didn't like, but it is in 
my database, so now I need this in my REBOL script too.

Oh found a solution at http://www.rebol.net/cookbook/recipes/0051.html
which works

I use this function:
Int2Date: func [i][1-Jan-1970/0:00 + to-time i]

i is unix style date (seconds from 1970)

you may need to change 0:00 to your GMT, if you don't store GMT separately.

And for the oposite:
Date2Int: func [d /local c][
    c: 1-Jan-1970/0:00
    d - c * 86400 + to-integer d/time - c/time
]

Christopher Gill's form-date.r is something I can't live without.
http://www.rebol.org/view-script.r?script=form-date.r

I use my own functions, returns always in ISO format, YYYY-MM-DD 
HH:NN:SS


padz: func ["Pad to right with zero." s n [integer!] /left /with 
c [char! string!]] [

    head insert/dup either left [tail form s] [form s] first form either 
    with [c] [#"0"] n - length? form s
]

format-date: func [d [date!]] [

 ajoin [d/date/year "-" padz d/date/month 2 "-" padz d/date/day 2 
 either d/time [ajoin [" " padz d/time/hour 2 ":" padz d/time/minute 
 2 ":" padz to-integer d/time/second 2]] [""]]
]

endo, Date2Int can be simplified as:

>> to integer! difference now 1-jan-1970/0:00
== 1335506831

That is much better. Thank you Gabriele!

DIFFERENCE will fail for future dates, starting mid-January 2038.

;>> difference 19-jan-2038/3:14:07 1-Jan-1970/0:0:0
;== 596523:14:07
;>> difference 19-jan-2038/3:14:08 1-Jan-1970/0:0:0
;== --596523:-14:-08
;>> difference 19-jan-2038/3:14:09 1-Jan-1970/0:0:0
;== -596523:14:07

Here's an old func I use: