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# rofvms.awk -*-awk-*-
# Filter to convert nroff -man output to VMS .hlp file format according
# to the rules:
#
# 13 or more consecutive blank lines are reduced to 1
# 3--12 consecutive blank lines are dropped
# 2 consecutive blank lines are reduced to 1
# All others output verbatim.
#
# The peculiar number 13 handles the case where a paragraph break
# coincides with a page break.
#
# In addition, whenever a line in non-blank in column 1, and then
# previous line was blank, we insert a blank line; this provides
# vertical space before a section heading.
#
# The output of nroff -man on different UNIX systems is regrettably
# quite variable in appearance; this file is likely to need
# modifications on other than Sun OS.
#
# Too bad nroff doesn't have an option to suppress titling!
#
# The NAME section head becomes 1 DVI, and others become
# 2 XXX followed by XXX.
# [05-Aug-89]
# Match and delete page headers: xxx(nnn) .... xxx(nnn)
/^[A-Za-z][-_A-Za-z0-9]*\([0-9A-Za-z]+\).*[A-Za-z][-_A-Za-z0-9]*\([0-9A-Za-z]+\)$/ {next;}
# Match and delete page footers: Sun Release ...nnn
# These vary from system to system, so extra patterns may be needed here
/^Sun Release.*[0-9]+$/ {next;} # Sun OS x.x
/^Printed.*[0-9]+$/ {next;} # BSD 4.3
/^Page [0-9].*$/ {next;} # Silicon Graphics
/^Version.*Last change:/ {next;}# bibclean.txt on SunOS 4.1.1
# Match all lines and do blank line processing
{
if (NF == 0) # blank line
nb++;
else # non blank line
{
if ((nb == 1) || (nb == 2) || (nb >= 13))
printf("\n");
else if ((nb > 0) && (substr($0,1,1) != " ") && (nf > 0))
printf("\n");
if ($0 == "NAME") # level 1 header
$0 = "1 DVI";
else if (substr($0,1,1) != " ") # level 2 header
{
header = $0;
gsub(/ /,"-",header);
$0 = "2 " header "\n " $0;
}
printf("%s\n",$0);
nb = 0;
nf++;
}
}
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