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define BLANK ' '
#* HISTORY *
#* B.Simon 24-Jul-92 Original
#* B.Simon 17-Dec-97 Copied from old cdbs for use in row selector
# This procedure removes leading and trailing whitespace and compresses
# interior whitepace to a single blank. Whitespace is defined to be any
# character with an ascii value less than or equal to that of the blank.
#
# TRSTRIM -- Remove non-significant whitespace from string
int procedure trstrim (str)
char str[ARB] # u: String to be modified
#--
bool flag
int ic, jc
begin
# Initialize flag to true so that leading blanks are skipped
jc = 1
flag = true
# Convert control characters to blanks, skip multiple blanks
for (ic = 1; str[ic] != EOS; ic = ic + 1) {
if (str[ic] > BLANK) {
flag = false
if (jc < ic)
str[jc] = str[ic]
jc = jc + 1
} else {
if (! flag) {
flag = true
str[jc] = ' '
jc = jc + 1
}
}
}
# Remove trailing blanks
if (flag && jc > 1)
jc = jc - 1
str[jc] = EOS
return (jc - 1)
end
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