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#!/usr/bin/perl -w
# preautoconf - generate lists of sources for doxygen to extract docs from
#
# Copyright (C) 2005,2007,2013 Olly Betts
#
# This program 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 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
use strict;
my @makefile_am;
# version.h is generated by configure, and isn't listed in BUILT_SOURCES.
my %built_sources = qw(include/xapian/version.h 1);
if ($0 =~ m!(.*)/!) {
$1 eq '.' or chdir $1 or die $!;
}
my %s;
for (parse_makefile_am("")) {
$s{$_}++;
}
my @apidoc_src = ();
my @sourcedoc_src = ();
for (sort keys %s) {
s!^\./!!;
next if m!^tests/! || $_ eq 'include/xapian/errordispatch.h';
my $src = $built_sources{$_} ? '$(top_builddir)' : '$T';
$src .= "/$_";
if (m!^include/!) {
push @apidoc_src, $src;
} else {
push @sourcedoc_src, $src;
}
}
open MAKEFRAG, ">docs/docsource.tmp" or die $!;
print MAKEFRAG "APIDOC_SRC=", join("\\\n\t", "", @apidoc_src), "\n";
print MAKEFRAG "SOURCEDOC_SRC=", join("\\\n\t", "", @sourcedoc_src), "\n";
close MAKEFRAG or do { unlink "docs/docsource.tmp"; die $! };
rename "docs/docsource.tmp", "docs/docsource.mk" or do { unlink "docs/docsource.tmp"; die $! };
open MAKEFRAG, ">docsource.tmp" or die $!;
print MAKEFRAG "docsource.mk: preautoreconf\n";
print MAKEFRAG "\tcd \$(top_srcdir) && ./preautoreconf\n";
# Add dummy rules so that "make" works even if a Makefile.am is removed.
for (@makefile_am) {
print MAKEFRAG "\n$_:\n";
}
close MAKEFRAG or do { unlink "docsource.tmp"; die $! };
rename "docsource.tmp", "docsource.mk" or do { unlink "docsource.tmp"; die $! };
exit 0;
sub parse_makefile_am {
my $dir = shift;
my %v;
my @l;
my $makefile_am = $dir . "Makefile.am";
my @pending = ();
open M, "<$makefile_am" or die "$makefile_am: $!\n";
push @makefile_am, $makefile_am;
while (<M>) {
pending:
chomp;
while (s/\\$/ /) {
if (@pending) {
$_ .= shift @pending;
} else {
$_ .= <M>;
}
chomp;
}
if (/^\s*(\w+)\s*[+:]?=\s*(.*?)\s*(?:#.*)?$/) {
my $var = $1;
if (exists $v{$var}) {
$v{$var} .= " $2";
} else {
$v{$var} = $2;
if ($var =~ /_(?:SOURCE|HEADER)S$/) {
push @l, $var;
}
}
} elsif (/^\s*include\s+(\S+)/ && $1 ne 'docsource.mk') {
# automake looks for a nested included file starting from the
# directory which the original file was in, so the behaviour
# here is correct.
my $inc = $dir . $1;
open INC, "<$inc" or die "$inc: $!\n";
push @makefile_am, $inc;
unshift @pending, <INC>;
close INC;
}
if (@pending) {
$_ = shift @pending;
goto pending;
}
}
close M;
if (exists $v{BUILT_SOURCES}) {
for (map {/^$/ ? () : $dir.$_} split /\s+/,
expand('BUILT_SOURCES', \%v)) {
$built_sources{$_}++;
}
}
my @src;
for (@l) {
push @src, map {/^$/ ? () : $dir.$_} split /\s+/, expand($_, \%v);
}
my $subdirs = $v{DIST_SUBDIRS} || $v{SUBDIRS} || '';
for (split /\s+/, $subdirs) {
next if $_ eq ".";
push @src, parse_makefile_am("$dir$_/");
}
return @src;
}
sub expand {
my ($var, $from, $to, $vref);
if (scalar @_ == 2) {
($var, $vref) = @_;
} else {
($var, $from, $to, $vref) = @_;
}
my $val = $$vref{$var};
# Deal with $(FOO:.bar=.c) pattern substitutions.
if (defined $from) {
my $x = $val;
$val =~ s/\Q$from\E(?:\s|$)/$to/g;
}
if (!defined $val) {
print STDERR "$0: Unknown variable: \$($var)\n";
return "";
}
$val =~ s/\$\((\w+)(?::([^=)]+)=([^=)]+))?\)/expand($1, $2, $3, $vref)/eg;
return $val;
}
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