--- /dev/null
+: #-*- Perl -*-
+# Copyright (C) 1998 Free Software Foundation, Inc.
+
+# This file is part of XEmacs.
+#
+# XEmacs is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2, or (at your option) any
+# later version.
+#
+# XEmacs is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+# for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with XEmacs; see the file COPYING. If not, write to
+# the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+# Author: Martin Buchholz
+eval 'exec perl -w -S $0 ${1+"$@"}'
+ if 0;
+
+use strict;
+my ($myName, $srcdir);
+
+($myName = $0) =~ s@.*/@@; my $usage ="
+Usage: $myName
+
+Generates header file fragments from the Emacs sources
+and writes them to stdout.\n";
+
+die $usage if @ARGV;
+
+($srcdir = $0) =~ s@[^/]+$@@;
+chdir $srcdir or die "$srcdir: $!";
+
+# Find include dependencies
+my (%exists, %uses);
+opendir SRCDIR, "." or die "$srcdir: $!";
+for (grep (/\.[ch]$/, readdir (SRCDIR))) { $exists{$_} = 1; }
+closedir SRCDIR;
+{
+ my %generated_header;
+ for (qw (config.h sheap-adjust.h paths.h Emacs.ad.h)) {
+ $generated_header{$_} = 1;
+ }
+
+ for my $file (keys %exists) {
+ open (FILE, $file) or die "$file: $!";
+ undef $/; $_ = <FILE>;
+ RemoveComments ($_);
+ s/[ \t]+//g;
+ for (/^\#include([^\n]+)/gmo) {
+ if (m@^\"([A-Za-z0-9_-]+\.h)\"@) {
+ $uses{$file}{$1} = 1 if exists $exists{$1};
+ } elsif (m@<([A-Za-z0-9_-]+\.h)>@) {
+ $uses{$file}{$1} = 1 if exists $generated_header{$1};
+ } elsif (m@\"../lwlib/([A-Za-z0-9_-]+\.h)\"@) {
+ $uses{$file}{"\$(LWLIB_SRCDIR)/lwlib.h"} = 1;
+ }
+ }
+ }
+
+ # Make transitive closure of %uses
+ while (1) {
+ my $changedP = 0;
+ for my $x (keys %uses) {
+ for my $y (keys %{$uses{$x}}) {
+ for my $z (keys %{$uses{$y}}) {
+ if (! exists $uses{$x}{$z}) {
+ $uses{$x}{$z} = 1;
+ $changedP = 1;
+ }
+ }
+ }
+ }
+ last if !$changedP;
+ }
+} # End of finding include dependencies
+
+my (%used, %maxargs);
+my $minargs = '(?:[0-8])';
+my $maxargs = '(?:[0-8]|MANY|UNEVALLED)';
+my $doc = "(?:0|STR)";
+my $fun = '(?:\\bF[a-z0-9_]+X?\\b)';
+my $defun = "^DEFUN\\s*\\(\\s+STR\\s+($fun)\\s+$minargs\\s+($maxargs)\\s+$doc\\s+\\(";
+my $var = '(?:\\b(?:Q[KS]?[a-z0-9_]+D?|V(?:[a-z0-9_]+)|Q_TT[A-Z]+)\\b)';
+my $pat = "(?:$var|$fun)";
+my %automagic;
+my (%decl_file, %defn_file);
+
+for my $file (keys %exists) {
+ open (FILE, $file) or die "$file: $!";
+ undef $/; $_ = <FILE>;
+ RemoveComments($_);
+ RemoveStrings ($_);
+ s/,/ /gmo;
+ s/^\s*EXFUN[^\n]+//gmo;
+
+ # Now search for DECLARE_LRECORD to find types for predicates
+ for my $sym (/^DECLARE_LRECORD\s*\(\s*([a-z_]+)\s+struct /gmo) {
+ $automagic{"Q${sym}p"} = 1;
+ }
+
+ if ($file =~ /\.c$/) {
+ my @match = (/$defun/gmo);
+ while (my $fun = shift @match) {
+ $defn_file{$fun} = $file;
+ $maxargs{$fun} = shift @match;
+ }
+
+ # Now do Lisp_Object variables
+ for my $defs (/^\s*Lisp_Object\s+((?:$var\s*)+)\s*;/gmo) {
+ for my $var (split (' ',$defs)) {
+ $defn_file{$var} = $file;
+ }
+ }
+ }
+
+ # Remove declarations of Lisp_Objects
+ s/^extern\s+Lisp_Object\s+(?:$var\s*)+\s*;//gmo;
+
+ # Remove declarations of functions
+ s/^Lisp_Object $fun//;
+
+ # Find all uses of symbols
+ for (/($pat)/gmo) { $used{$_}{$file} = 1; }
+}
+
+my %candidates;
+for my $file (keys %exists) {
+ @{$candidates{$file}} = ();
+ my $header1 = $file; $header1 =~ s/\.c$/.h/;
+ my $header2 = $header1; $header2 =~ s/-\w+\././;
+ push @{$candidates{$file}}, $header1 if exists $exists{$header1};
+ push @{$candidates{$file}}, $header2 if exists $exists{$header2} &&
+ $header1 ne $header2;
+}
+
+SYM: for my $sym (keys %used) {
+ next SYM unless my $defn_file = $defn_file{$sym};
+ my @users = keys %{$used{$sym}};
+ if (@users == 1) {
+ die "$sym\n" unless $defn_file eq $users[0];
+ next SYM;
+ }
+ for my $candidate (@{$candidates{$defn_file}}) {
+ if (!grep (!exists $uses{$_}{$candidate}, @users)) {
+ $decl_file{$sym} = $candidate;
+ next SYM;
+ }
+ }
+ $decl_file{$sym} = 'lisp.h';
+}
+
+# Print global Lisp_Objects
+{
+ my $line;
+ sub flushvars {
+ if (defined $line) {
+ print "extern Lisp_Object $line;\n";
+ undef $line;
+ }
+ }
+
+ sub printvar {
+ my $var = shift;
+ if (!defined $line) { $line = $var; return; }
+ if ($var =~ /^Vcharset_/) {
+ flushvars ();
+ $line = $var;
+ flushvars ();
+ return;
+ }
+ if (length "$line, $var" > 59) {
+ flushvars (); $line = $var; return;
+ }
+ $line = "$line, $var";
+ }
+ END { flushvars (); }
+}
+
+delete @decl_file{ keys %automagic, qw(Qzero Qnull_pointer)};
+
+# Print Lisp_Object var declarations
+for my $file (keys %exists) {
+
+ # Print EXFUNs
+ if (my @funs = grep ($decl_file{$_} eq $file && exists $maxargs{$_},
+ keys %decl_file)) {
+ print "\n\n$file:\n\n";
+ for $fun (sort @funs) {
+ print "EXFUN ($fun, $maxargs{$fun});\n";
+ }
+ print "\n";
+ }
+
+ if (my @vars = grep ($decl_file{$_} eq $file && /^[QV]/, keys %decl_file)) {
+ print "\n\n$file:\n\n";
+ for $var (sort @vars) {
+ printvar ($var);
+ }
+ flushvars ();
+ print "\n\n";
+ }
+}
+
+#for my $var (sort grep (keys %{$used{$_}} > 1 , keys %defn_file)) {
+# printvar ($var);
+#}
+
+sub RemoveComments {
+ $_[0] =~
+ s{ (
+ [^\"\'/]+ |
+ (?:\"[^\"\\]*(?:\\.[^\"\\]*)*\" [^\"\'/]*)+ |
+ (?:\'[^\'\\]*(?:\\.[^\'\\]*)*\' [^\"\'/]*)+
+ )
+ | / (?:
+ \*[^*]*\*+(?:[^/*][^*]*\*+)*/
+ |
+ /[^\n]*
+ )
+ }{defined $1 ? $1 : ""}gsxeo;
+}
+
+sub RemoveStrings {
+ $_[0] =~
+ s{ (
+ (?:\"[^\"\\]*(?:\\.[^\"\\]*)*\") |
+ (?:\'[^\'\\]*(?:\\.[^\'\\]*)*\')
+ )
+ }{ STR }gxo;
+}
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