xv6-65oo2/runoff

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#!/bin/sh
echo This script takes a minute to run. Be patient. 1>&2
# pad stdin to multiple of 120 lines
pad()
{
awk '{print} END{for(; NR%120!=0; NR++) print ""}'
}
# create formatted (numbered) files
mkdir -p fmt
rm fmt/*
cp README fmt
files=`grep -v '^#' runoff.list | awk '{print $1}'`
n=99
for i in $files
do
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perl -e '$n='$n';' -e '
$n = int(($n+49)/50)*50 - 1;
@lines = <>;
foreach (@lines) {
chomp;
s/\s+$//;
if(length() >= 75){
print "$ARGV[0]:$.: line too long";
}
}
@outlines = ();
$nextout = 0;
for($i=0; $i<@lines; ){
# Skip leading blank lines.
$i++ while $i<@lines && $lines[$i] =~ /^$/;
last if $i>=@lines;
# If the rest of the file fits, use the whole thing.
if(@lines <= $i+50){
$breakbefore = @lines;
}else{
# Find a good next page break;
# Hope for end of function.
# but settle for a blank line (but not first blank line
# in function, which comes after variable declarations).
$breakbefore = $i;
$lastblank = $i;
$sawbrace = 0;
$breaksize = 15; # 15 lines to get to function
for($j=$i; $j<$i+50 && $j < @lines; $j++){
if($lines[$j] =~ /PAGEBREAK:\s*([0-9]+)/){
$breaksize = int($2);
$breakbefore = $j;
$lines[$j] = "";
}
if($lines[$j] =~ /^}$/){
$breakbefore = $j+1;
}
if($lines[$j] =~ /^{$/){
$sawbrace = 1;
}
if($lines[$j] =~ /^$/){
if($sawbrace){
$sawbrace = 0;
}else{
$lastblank = $j;
}
}
}
if($j<@lines && $lines[$j] =~ /^$/){
$lastblank = $j;
}
# If we are not putting enough on a page, try a blank line.
if($breakbefore - $i < 50 - $breaksize && $lastblank > $breakbefore && $lastblank >= $i+50 - 5){
$breakbefore = $lastblank;
$breaksize = 5; # only 5 lines to get to blank line
}
# If we are not putting enough on a page, force a full page.
if($breakbefore - $i < 50 - $breaksize && $breakbefore != @lines){
$breakbefore = $i + 50;
$breakbefore = @lines if @lines < $breakbefore;
}
if($breakbefore < $i+2){
$breakbefore = $i+2;
}
}
# Emit the page.
$i50 = $i + 50;
for(; $i<$breakbefore; $i++){
printf "%04d %s\n", ++$n, $lines[$i];
}
# Finish page
for($j=$i; $j<$i50; $j++){
printf "%04d \n", ++$n;
}
}
' $i >fmt/$i
nn=`tail -1 fmt/$i | sed 's/ .*//; s/^0*//'`
if [ "x$nn" != x ]; then
n=$nn
fi
done
# create table of contents
pr -e8 -t runoff.list | awk '
/^[a-z]/ {
s=$0
f="fmt/"$1
getline<f
close(f)
n=$1
printf("%02d %s\n", n/100, s);
next
}
{
print
}' >fmt/toc
# make definition list
cd fmt
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perl -e '
while(<>) {
chomp;
s!//.*!!;
s!/\*([^*]|[*][^/])*\*/!!g;
s!\s! !g;
s! +$!!;
# look for declarations like char* x;
if (/^[0-9]+ typedef .* u(int|short|long|char);/) {
next;
}
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if (/^[0-9]+ extern/) {
next;
}
if (/^[0-9]+ struct [a-zA-Z0-9_]+;/) {
next;
}
if (/\(/) {
next;
}
if (/^([0-9]+) (((static|struct|extern|union|enum) +)*([A-Za-z0-9_]+))( .*)? +([A-Za-z_][A-Za-z0-9_]*)[,;]/) {
print "$1 $7\n"
}
elsif (/^([0-9]+) #define +([A-za-z0-9_]+) +?\(.*/) {
print "$1 $2\n"
}
elsif (/^([0-9]+) #define +([A-Za-z0-9_]+) +([^ ]+)$/) {
print "$1 $2 $3\n";
}
elsif (/^([0-9]+) #define +([A-Za-z0-9_]+)/) {
print "$1 $2\n";
}
elsif(/^([0-9]+) (enum|struct|union) +([A-Za-z0-9_]+) +{/){
print "$1 $3\n";
}
# TODO: enum members
}
' $files >defs
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perl -n -e 'print if s/^([0-9]+ [a-zA-Z0-9_]+)\(.*$/\1/;' $files |
egrep -v ' (usage|main|if|for)$' >>defs
(
>s.defs
# make reference list
for i in `awk '{print $2}' defs | sort -fu`
do
defs=`egrep '^[0-9]+ '$i'( |$)' defs | awk '{print $1}'`
echo $i $defs >>s.defs
uses=`egrep -h '([^a-zA-Z_0-9])'$i'($|[^a-zA-Z_0-9])' $files | awk '{print $1}'`
echo $i $defs
echo $uses |fmt -24 | sed 's/^/ /'
done
) >refs
# build defs list
awk '
{
printf("%04d %s\n", $2, $1);
for(i=3; i<=NF; i++)
printf("%04d \" \n", $i);
}
' s.defs > t.defs
# format the whole thing
(
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pr -l60 -e8 README
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pr -l60 -h "table of contents" -e8 -2 toc
pr -l60 -h "definitions" -2 t.defs | pad
pr -l60 -h "cross-references" -2 refs | pad
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for i in $files
do
cat $i | pr -l60 -e8 -h "xv6/$i"
done
) | mpage -m50t50b -o -bLetter -T -t -2 -FCourier -L60 >all.ps
grep Pages: all.ps
# if we have the nice font, use it
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nicefont=~rsc/plan9/sys/lib/postscript/font/LucidaSans-Typewriter83
if [ -f $nicefont ]
then
(sed 1q all.ps; cat $nicefont; sed '1d; s/Courier/LucidaSans-Typewriter83/' all.ps) >allf.ps
else
cp all.ps allf.ps
fi
ps2pdf allf.ps ../xv6.pdf