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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
# STRENTAB -- Procedure to replace blanks with tabs and blanks.
procedure strentab (line, outline, maxch, tabsize)
int maxch, tabsize
char line[ARB], outline[ARB]
int ip, op, ltab
begin
op = 1
ip = 1
repeat {
ltab = ip
while (line[ltab] == ' ' && op <= maxch) {
ltab = ltab + 1
if (mod(ltab, tabsize) == 1) {
outline[op] = '\t'
ip = ltab
op = op + 1
}
}
for (; ip < ltab && op <= maxch; ip = ip + 1) {
outline[op] = ' '
op = op + 1
}
if (line[ip] == EOS || op >= maxch+1)
break
outline[op] = line[ip]
op = op + 1
ip = ip + 1
} until (line[ip] == EOS || op >= maxch+1)
outline[op] = EOS
end
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