1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
############################################################################
#
# File: phoname.icn
#
# Subject: Procedures to generate letters for phone numbers
#
# Author: Thomas R. Hicks
#
# Date: June 10, 1988
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# This procedure generates the letter combinations corresponding to the
# digits in a telephone number.
#
# Warning:
#
# The number of possibilities is very large. This procedure should be
# used in a context that limits or filters its output.
#
############################################################################
procedure phoname(number)
local buttons, nondigits, pstr, t, x
buttons := ["000","111","abc","def","ghi","jkl","mno", "prs","tuv","wxy"]
nondigits := ~&digits
pstr := stripstr(number,nondigits)
if 7 ~= *pstr then fail
t := []
every x := !pstr do
put(t,buttons[x+1])
suspend !t[1] || !t[2] || !t[3] || !t[4] || !t[5] || !t[6] || !t[7]
end
procedure stripstr(str,delchs)
local i
i := 1
while i <= *str do
{
if any(delchs,str,i) then
str[i] := ""
else
i +:= 1
}
return str
end # stripstr
|
