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
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
|
case $CONFIG in
'')
if test ! -f config.sh; then
ln ../config.sh . || \
ln ../../config.sh . || \
ln ../../../config.sh . || \
(echo "Can't find config.sh."; exit 1)
fi
. ./config.sh
;;
esac
: This forces SH files to create target in same directory as SH file.
: This is so that make depend always knows where to find SH derivatives.
case "$0" in
*/*) cd `expr X$0 : 'X\(.*\)/'` ;;
esac
echo "Extracting h2ph (with variable substitutions)"
: This section of the file will have variable substitutions done on it.
: Move anything that needs config subs from !NO!SUBS! section to !GROK!THIS!.
: Protect any dollar signs and backticks that you do not want interpreted
: by putting a backslash in front. You may delete these comments.
$spitshell >h2ph <<!GROK!THIS!
#!$bin/perl
'di';
'ig00';
\$perlincl = '$privlib';
!GROK!THIS!
: In the following dollars and backticks do not need the extra backslash.
$spitshell >>h2ph <<'!NO!SUBS!'
chdir '/usr/include' || die "Can't cd /usr/include";
%isatype = ('char',1,'short',1,'int',1,'long',1);
foreach $file (@ARGV) {
($outfile = $file) =~ s/\.h$/.ph/ || next;
print "$file -> $outfile\n";
if ($file =~ m|^(.*)/|) {
$dir = $1;
if (!-d "$perlincl/$dir") {
mkdir("$perlincl/$dir",0777);
}
}
open(IN,"$file") || ((warn "Can't open $file: $!\n"),next);
open(OUT,">$perlincl/$outfile") || die "Can't create $outfile: $!\n";
while (<IN>) {
chop;
while (/\\$/) {
chop;
$_ .= <IN>;
chop;
}
if (s:/\*:\200:g) {
s:\*/:\201:g;
s/\200[^\201]*\201//g; # delete single line comments
if (s/\200.*//) { # begin multi-line comment?
$_ .= '/*';
$_ .= <IN>;
redo;
}
}
if (s/^#\s*//) {
if (s/^define\s+(\w+)//) {
$name = $1;
$new = '';
s/\s+$//;
if (s/^\(([\w,\s]*)\)//) {
$args = $1;
if ($args ne '') {
foreach $arg (split(/,\s*/,$args)) {
$curargs{$arg} = 1;
}
$args =~ s/\b(\w)/\$$1/g;
$args = "local($args) = \@_;\n$t ";
}
s/^\s+//;
do expr();
$new =~ s/(["\\])/\\$1/g;
if ($t ne '') {
$new =~ s/(['\\])/\\$1/g;
print OUT $t,
"eval 'sub $name {\n$t ${args}eval \"$new\";\n$t}';\n";
}
else {
print OUT "sub $name {\n ${args}eval \"$new\";\n}\n";
}
%curargs = ();
}
else {
s/^\s+//;
do expr();
$new = 1 if $new eq '';
if ($t ne '') {
$new =~ s/(['\\])/\\$1/g;
print OUT $t,"eval 'sub $name {",$new,";}';\n";
}
else {
print OUT $t,"sub $name {",$new,";}\n";
}
}
}
elsif (/^include <(.*)>/) {
($incl = $1) =~ s/\.h$/.ph/;
print OUT $t,"require '$incl';\n";
}
elsif (/^ifdef\s+(\w+)/) {
print OUT $t,"if (defined &$1) {\n";
$tab += 4;
$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
}
elsif (/^ifndef\s+(\w+)/) {
print OUT $t,"if (!defined &$1) {\n";
$tab += 4;
$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
}
elsif (s/^if\s+//) {
$new = '';
do expr();
print OUT $t,"if ($new) {\n";
$tab += 4;
$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
}
elsif (s/^elif\s+//) {
$new = '';
do expr();
$tab -= 4;
$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
print OUT $t,"}\n${t}elsif ($new) {\n";
$tab += 4;
$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
}
elsif (/^else/) {
$tab -= 4;
$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
print OUT $t,"}\n${t}else {\n";
$tab += 4;
$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
}
elsif (/^endif/) {
$tab -= 4;
$t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
print OUT $t,"}\n";
}
}
}
print OUT "1;\n";
}
sub expr {
while ($_ ne '') {
s/^(\s+)// && do {$new .= ' '; next;};
s/^(0x[0-9a-fA-F]+)// && do {$new .= $1; next;};
s/^(\d+)// && do {$new .= $1; next;};
s/^("(\\"|[^"])*")// && do {$new .= $1; next;};
s/^'((\\"|[^"])*)'// && do {
if ($curargs{$1}) {
$new .= "ord('\$$1')";
}
else {
$new .= "ord('$1')";
}
next;
};
s/^(struct\s+\w+)// && do {$new .= "'$1'"; next;};
s/^sizeof\s*\(([^)]+)\)/{$1}/ && do {
$new .= '$sizeof';
next;
};
s/^([_a-zA-Z]\w*)// && do {
$id = $1;
if ($curargs{$id}) {
$new .= '$' . $id;
}
elsif ($id eq 'defined') {
$new .= 'defined';
}
elsif (/^\(/) {
s/^\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat
$new .= " &$id";
}
elsif ($isatype{$id}) {
$new .= "'$id'";
}
else {
$new .= ' &' . $id;
}
next;
};
s/^(.)// && do {$new .= $1; next;};
}
}
##############################################################################
# These next few lines are legal in both Perl and nroff.
.00; # finish .ig
'di \" finish diversion--previous line must be blank
.nr nl 0-1 \" fake up transition to first page again
.nr % 0 \" start at page 1
'; __END__ ############# From here on it's a standard manual page ############
.TH H2PH 1 "August 8, 1990"
.AT 3
.SH NAME
h2ph \- convert .h C header files to .ph Perl header files
.SH SYNOPSIS
.B h2ph [headerfiles]
.SH DESCRIPTION
.I h2ph
converts any C header files specified to the corresponding Perl header file
format.
It is most easily run while in /usr/include:
.nf
cd /usr/include; h2ph * sys/*
.fi
.SH ENVIRONMENT
No environment variables are used.
.SH FILES
/usr/include/*.h
.br
/usr/include/sys/*.h
.br
etc.
.SH AUTHOR
Larry Wall
.SH "SEE ALSO"
perl(1)
.SH DIAGNOSTICS
The usual warnings if it can't read or write the files involved.
.SH BUGS
Doesn't construct the %sizeof array for you.
.PP
It doesn't handle all C constructs, but it does attempt to isolate
definitions inside evals so that you can get at the definitions
that it can translate.
.PP
It's only intended as a rough tool.
You may need to dicker with the files produced.
.ex
!NO!SUBS!
chmod 755 h2ph
$eunicefix h2ph
rm -f h2ph.man
ln h2ph h2ph.man
|
