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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
define SZ_ERRMSG SZ_LINE
# SYSERR -- Process a system error. No arguments; print only the error
# message from the system error message file.
procedure syserr (errcode)
int errcode
begin
call syserrs (errcode, "")
end
# SYSERRS -- System error, with a user supplied string argument. We do not
# want to search the system error message file until ERRACT is called to
# output the error message and initiate error recovery, because if an IFERR
# error handler is posted the message will never be used. Hence we encode
# an error message of the form "123 user_string", where "123" is the encoded
# system error message number. If a message is ever actually output the
# 123 will be expanded into a readable error message.
procedure syserrs (errcode, user_string)
int errcode
char user_string[ARB]
char buf[SZ_ERRMSG]
int ip, op
int itoc()
begin
# Encode error code, to be used to search error message file.
op = itoc (errcode, buf, SZ_ERRMSG) + 1
if (user_string[1] != EOS) {
buf[op] = ' '
op = op + 1
for (ip=1; op <= SZ_ERRMSG && user_string[ip] != EOS; ip=ip+1) {
buf[op] = user_string[ip]
op = op + 1
}
}
buf[op] = EOS
call error (errcode, buf)
end
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