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 | $$syms{$1} = 1; | |
15 | } | |
16 | } | |
17 | close(FILE); | |
18 | } | |
19 | ||
20 | readsyms %global, 'global.sym'; | |
21 | readsyms %interp, 'interp.sym'; | |
22 | readsyms %compat3, 'compat3.sym'; | |
23 | ||
24 | sub hide ($$) { | |
25 | my ($from, $to) = @_; | |
26 | my $t = int(length($from) / 8); | |
27 | "#define $from" . "\t" x ($t < 3 ? 3 - $t : 1) . "$to\n"; | |
28 | } | |
29 | sub embed ($) { | |
30 | my ($sym) = @_; | |
31 | hide($sym, "Perl_$sym"); | |
32 | } | |
33 | sub multon ($) { | |
34 | my ($sym) = @_; | |
35 | hide($sym, "(curinterp->I$sym)"); | |
36 | } | |
37 | sub multoff ($) { | |
38 | my ($sym) = @_; | |
39 | hide("I$sym", $sym); | |
40 | } | |
41 | ||
42 | unlink 'embed.h'; | |
43 | open(EM, '> embed.h') | |
44 | or die "Can't create embed.h: $!\n"; | |
e50aee73 AD |
45 | |
46 | print EM <<'END'; | |
76b72cf1 | 47 | /* !!!!!!! DO NOT EDIT THIS FILE !!!!!!! |
5f05dabc | 48 | This file is built by embed.pl from global.sym, interp.sym, |
49 | and compat3.sym. Any changes made here will be lost! | |
76b72cf1 | 50 | */ |
e50aee73 AD |
51 | |
52 | /* (Doing namespace management portably in C is really gross.) */ | |
53 | ||
820c3be9 | 54 | /* EMBED has no run-time penalty, but helps keep the Perl namespace |
55 | from colliding with that used by other libraries pulled in | |
56 | by extensions or by embedding perl. Allow a cc -DNO_EMBED | |
57 | override, however, to keep binary compatability with previous | |
58 | versions of perl. | |
59 | */ | |
60 | #ifndef NO_EMBED | |
61 | # define EMBED 1 | |
62 | #endif | |
63 | ||
5f05dabc | 64 | /* Hide global symbols? */ |
65 | ||
e50aee73 AD |
66 | #ifdef EMBED |
67 | ||
e50aee73 AD |
68 | END |
69 | ||
5f05dabc | 70 | for $sym (sort keys %global) { |
71 | print EM embed($sym) unless $compat3{$sym}; | |
e50aee73 AD |
72 | } |
73 | ||
5f05dabc | 74 | print EM <<'END'; |
75 | ||
76 | /* Hide global symbols that 5.003 revealed? */ | |
77 | ||
78 | #ifndef BINCOMPAT3 | |
79 | ||
80 | END | |
81 | ||
82 | for $sym (sort keys %global) { | |
83 | print EM embed($sym) if $compat3{$sym}; | |
84 | } | |
e50aee73 AD |
85 | |
86 | print EM <<'END'; | |
87 | ||
5f05dabc | 88 | #endif /* !BINCOMPAT3 */ |
89 | ||
e50aee73 AD |
90 | #endif /* EMBED */ |
91 | ||
5f05dabc | 92 | /* Put interpreter-specific symbols into a struct? */ |
e50aee73 AD |
93 | |
94 | #ifdef MULTIPLICITY | |
95 | ||
96 | END | |
97 | ||
5f05dabc | 98 | for $sym (sort keys %interp) { |
99 | print EM multon($sym); | |
760ac839 | 100 | } |
760ac839 | 101 | |
55497cff | 102 | print EM <<'END'; |
103 | ||
5f05dabc | 104 | #else /* !MULTIPLICITY */ |
55497cff | 105 | |
106 | END | |
760ac839 | 107 | |
5f05dabc | 108 | for $sym (sort keys %interp) { |
109 | print EM multoff($sym); | |
e50aee73 | 110 | } |
e50aee73 | 111 | |
56d28764 CS |
112 | print EM <<'END'; |
113 | ||
5f05dabc | 114 | /* Hide interpreter-specific symbols? */ |
115 | ||
56d28764 CS |
116 | #ifdef EMBED |
117 | ||
118 | END | |
e50aee73 | 119 | |
5f05dabc | 120 | for $sym (sort keys %interp) { |
121 | print EM embed($sym) if $compat3{$sym}; | |
e50aee73 | 122 | } |
e50aee73 AD |
123 | |
124 | print EM <<'END'; | |
125 | ||
5f05dabc | 126 | /* Hide interpreter symbols that 5.003 revealed? */ |
127 | ||
128 | #ifndef BINCOMPAT3 | |
129 | ||
130 | END | |
131 | ||
132 | for $sym (sort keys %interp) { | |
133 | print EM embed($sym) unless $compat3{$sym}; | |
134 | } | |
135 | ||
136 | print EM <<'END'; | |
137 | ||
138 | #endif /* !BINCOMPAT3 */ | |
139 | ||
56d28764 CS |
140 | #endif /* EMBED */ |
141 | ||
e50aee73 AD |
142 | #endif /* MULTIPLICITY */ |
143 | END | |
144 |