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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <ctype.h>
# TTYDEVNAME -- Extract the logical device name from a full device specification
# of the form "node ! logical_device ? physical_device". The node prefix, if
# given, specifies the node from which the device is to be accessed (via the
# network), and the physical device field contains particulars about the
# physical device to be accessed. Only the logical device field, used to index
# the termcap file, is of any interest to TTY. The logical device name
# consists of chars chosen from the set [a-zA-Z0-9_+-].
procedure ttydevname (device, ldevice, maxch)
char device[ARB] # full device specification
char ldevice[maxch] # logical device name
int maxch
pointer sp, nodename
int ip, op, ch
int ki_extnode()
begin
call smark (sp)
call salloc (nodename, SZ_FNAME, TY_CHAR)
ip = ki_extnode (device, Memc[nodename], maxch, op) + 1
for (op=1; device[ip] != EOS; ip=ip+1) {
ch = device[ip]
if (!(IS_ALNUM(ch) || ch == '_' || ch == '+' || ch == '-')) {
ldevice[op] = EOS
break
} else {
ldevice[op] = ch
op = op + 1
}
}
call sfree (sp)
end
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