1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
#!/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 $files
do
perl -e '$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=$1
printf("%02d %s\n", n/100, s);
next
}
{
print
}' >fmt/toc
# make definition list
cd fmt
perl -e '
while(<>) {
chomp;
s!//.*!!;
s!/\*([^*]|[*][^/])*\*/!!g;
s!\s! !g;
s! +$!!;
# look for declarations like char* x;
if (/^[0-9]+ typedef .* u(int|short|long|char);/) {
next;
}
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
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
(
pr -l60 -e8 README
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
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
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
|
