# labels.awk --- print mailing labels
#
# Arnold Robbins, [email protected], Public Domain
# June 1992
# December 2010, minor edits

# Each label is 5 lines of data that may have blank lines.
# The label sheets have 2 blank lines at the top and 2 at
# the bottom.

BEGIN { RS = "" ; MAXLINES = 100 }

function printpage( i, j)
{
if (Nlines <= 0)
return

printf "\n\n" # header

for (i = 1; i <= Nlines; i += 10) {
if (i == 21 || i == 61)
print ""
for (j = 0; j < 5; j++) {
if (i + j > MAXLINES)
break
printf " %-41s %s\n", line[i+j], line[i+j+5]
}
print ""
}

printf "\n\n" # footer

delete line
}

# main rule
{
if (Count >= 20) {
printpage()
Count = 0
Nlines = 0
}
n = split($0, a, "\n")
for (i = 1; i <= n; i++)
line[++Nlines] = a[i]
for (; i <= 5; i++)
line[++Nlines] = ""
Count++
}

END \
{
printpage()
}