Commit | Line | Data |
---|---|---|
5f05dabc | 1 | #!/usr/bin/perl -w |
e50aee73 | 2 | |
5f05dabc | 3 | require 5.003; |
4 | ||
5 | sub readsyms (\%$) { | |
6 | my ($syms, $file) = @_; | |
7 | %$syms = (); | |
8 | local (*FILE, $_); | |
9 | open(FILE, "< $file") | |
10 | or die "embed.pl: Can't open $file: $!\n"; | |
11 | while (<FILE>) { | |
12 | s/[ \t]*#.*//; # Delete comments. | |
13 | if (/^\s*(\S+)\s*$/) { | |
14 | $$syms{$1} = 1; | |
15 | } | |
16 | } | |
17 | close(FILE); | |
18 | } | |
19 | ||
20 | readsyms %global, 'global.sym'; | |
21 | readsyms %interp, 'interp.sym'; | |
5f05dabc | 22 | |
23 | sub hide ($$) { | |
24 | my ($from, $to) = @_; | |
25 | my $t = int(length($from) / 8); | |
26 | "#define $from" . "\t" x ($t < 3 ? 3 - $t : 1) . "$to\n"; | |
27 | } | |
28 | sub embed ($) { | |
29 | my ($sym) = @_; | |
30 | hide($sym, "Perl_$sym"); | |
31 | } | |
32 | sub multon ($) { | |
33 | my ($sym) = @_; | |
34 | hide($sym, "(curinterp->I$sym)"); | |
35 | } | |
36 | sub multoff ($) { | |
37 | my ($sym) = @_; | |
38 | hide("I$sym", $sym); | |
39 | } | |
40 | ||
41 | unlink 'embed.h'; | |
42 | open(EM, '> embed.h') | |
43 | or die "Can't create embed.h: $!\n"; | |
e50aee73 AD |
44 | |
45 | print EM <<'END'; | |
76b72cf1 | 46 | /* !!!!!!! DO NOT EDIT THIS FILE !!!!!!! |
dc86dda3 NIS |
47 | This file is built by embed.pl from global.sym and interp.sym. |
48 | Any changes made here will be lost! | |
76b72cf1 | 49 | */ |
e50aee73 AD |
50 | |
51 | /* (Doing namespace management portably in C is really gross.) */ | |
52 | ||
820c3be9 | 53 | /* EMBED has no run-time penalty, but helps keep the Perl namespace |
54 | from colliding with that used by other libraries pulled in | |
55 | by extensions or by embedding perl. Allow a cc -DNO_EMBED | |
56 | override, however, to keep binary compatability with previous | |
57 | versions of perl. | |
58 | */ | |
59 | #ifndef NO_EMBED | |
60 | # define EMBED 1 | |
61 | #endif | |
62 | ||
5f05dabc | 63 | /* Hide global symbols? */ |
64 | ||
e50aee73 AD |
65 | #ifdef EMBED |
66 | ||
e50aee73 AD |
67 | END |
68 | ||
5f05dabc | 69 | for $sym (sort keys %global) { |
dc86dda3 | 70 | print EM embed($sym); |
e50aee73 AD |
71 | } |
72 | ||
e50aee73 AD |
73 | |
74 | print EM <<'END'; | |
75 | ||
76 | #endif /* EMBED */ | |
77 | ||
5f05dabc | 78 | /* Put interpreter-specific symbols into a struct? */ |
e50aee73 AD |
79 | |
80 | #ifdef MULTIPLICITY | |
81 | ||
82 | END | |
83 | ||
5f05dabc | 84 | for $sym (sort keys %interp) { |
85 | print EM multon($sym); | |
760ac839 | 86 | } |
760ac839 | 87 | |
55497cff | 88 | print EM <<'END'; |
89 | ||
5f05dabc | 90 | #else /* !MULTIPLICITY */ |
55497cff | 91 | |
92 | END | |
760ac839 | 93 | |
5f05dabc | 94 | for $sym (sort keys %interp) { |
95 | print EM multoff($sym); | |
e50aee73 | 96 | } |
e50aee73 | 97 | |
56d28764 CS |
98 | print EM <<'END'; |
99 | ||
5f05dabc | 100 | /* Hide interpreter-specific symbols? */ |
101 | ||
56d28764 CS |
102 | #ifdef EMBED |
103 | ||
104 | END | |
e50aee73 | 105 | |
5f05dabc | 106 | for $sym (sort keys %interp) { |
dc86dda3 | 107 | print EM embed($sym); |
5f05dabc | 108 | } |
109 | ||
110 | print EM <<'END'; | |
111 | ||
56d28764 | 112 | #endif /* EMBED */ |
e50aee73 AD |
113 | #endif /* MULTIPLICITY */ |
114 | END | |
115 |