#!/usr/bin/perl -w
use strict;
-use vars qw($masterpodfile %Build %Targets $Verbose $Quiet $Up %Ignore
+use vars qw($masterpodfile %Build %Targets $Verbose $Quiet %Ignore
@Master %Readmes %Pods %Aux %Readmepods %Pragmata %Modules
- %Copies %Generated);
+ %Copies %Generated $Test);
use File::Spec;
use File::Find;
use FindBin;
no locale;
-$Up = File::Spec->updir;
-$masterpodfile = File::Spec->catfile($Up, "pod.lst");
+{
+ my $Top = File::Spec->catdir($FindBin::Bin, File::Spec->updir);
+
+ sub abs_from_top {
+ my $path = shift;
+ return File::Spec->catdir($Top, split /\//, $path) if $path =~ s!/\z!!;
+ return File::Spec->catfile($Top, split /\//, $path);
+ }
+}
+
+$masterpodfile = abs_from_top('pod.lst');
# Generate any/all of these files
# --verbose gives slightly more output
# --build-all tries to build everything
# --build-foo updates foo as follows
# --showfiles shows the files to be changed
+# --test exit early, exit if perl.pod, pod.lst, MANIFEST are
+# consistent, die otherwise.
%Targets
= (
- toc => "perltoc.pod",
- manifest => File::Spec->catdir($Up, "MANIFEST"),
- perlpod => "perl.pod",
- vms => File::Spec->catfile($Up, "vms", "descrip_mms.template"),
- nmake => File::Spec->catfile($Up, "win32", "Makefile"),
- dmake => File::Spec->catfile($Up, "win32", "makefile.mk"),
- podmak => File::Spec->catfile($Up, "win32", "pod.mak"),
- # plan9 => File::Spec->catdir($Up, "plan9", "mkfile"),
- unix => File::Spec->catfile($Up, "Makefile.SH"),
+ toc => 'pod/perltoc.pod',
+ manifest => 'MANIFEST',
+ perlpod => 'pod/perl.pod',
+ vms => 'vms/descrip_mms.template',
+ nmake => 'win32/Makefile',
+ dmake => 'win32/makefile.mk',
+ podmak => 'win32/pod.mak',
+ # plan9 => 'plan9/mkfile'),
+ unix => 'Makefile.SH',
# TODO: add roffitall
);
+foreach (values %Targets) {
+ $_ = abs_from_top($_);
+}
+
{
my @files = keys %Targets;
my $filesopts = join(" | ", map { "--build-$_" } "all", sort @files);
my $showfiles;
+ my %build_these;
die <<__USAGE__
$0: Usage: $0 [--verbose] [--showfiles] $filesopts
__USAGE__
&& GetOptions (verbose => \$Verbose,
quiet => \$Quiet,
showfiles => \$showfiles,
- map {+"build-$_", \$Build{$_}} @files, 'all');
- # Set them all to true
- @Build{@files} = @files if ($Build{all});
+ test => \$Test,
+ map {+"build-$_", \$build_these{$_}} @files, 'all');
+ if ($build_these{all}) {
+ %Build = %Targets;
+ } else {
+ while (my ($file, $want) = each %build_these) {
+ $Build{$file} = $Targets{$file} if $want;
+ }
+ }
if ($showfiles) {
print
join(" ",
File::Spec->catfile(@d ?
(@d == 1 && $d[0] eq '' ? () : @d)
: "pod", $f);
- } @Targets{grep { $_ ne 'all' && $Build{$_} } keys %Build}),
+ } @Targets{@files}),
"\n";
exit(0);
}
);
if ($Verbose) {
- print "I'm building $_\n" foreach grep {$Build{$_}} keys %Build;
+ print "I'm building $_\n" foreach keys %Build;
}
-chdir $FindBin::Bin or die "$0: Can't chdir $FindBin::Bin: $!";
-
open MASTER, $masterpodfile or die "$0: Can't open $masterpodfile: $!";
my ($delta_source, $delta_target);
$flags{aux} = 1 if $flags =~ tr/a//d;
if ($flags =~ tr/D//d) {
- $flags{perlpod_omit} = 1;
+ $flags{manifest_omit} = 1;
$delta_source = "$filename.pod";
}
if ($flags =~ tr/d//d) {
- $flags{manifest_omit} = 1;
+ $flags{perlpod_omit} = 1;
$delta_target = "$filename.pod";
}
$Generated{"$filename.pod"}++ if $flags =~ tr/g//d;
die "$0: delta source defined but not target";
}
} elsif (defined $delta_target) {
- die "$0: delta target defined but not target";
+ die "$0: delta target defined but not source";
}
close MASTER;
my (@manireadmes, %manireadmes);
my (@perlpods, %perlpods);
my (%our_pods);
- my (%sources);
# Convert these to a list of filenames.
foreach (keys %Pods, keys %Readmepods) {
$our_pods{"$_.pod"}++;
}
- # None of these filenames will be boolean false
- @disk_pods = glob("*.pod");
- @disk_pods{@disk_pods} = @disk_pods;
+ opendir my $dh, abs_from_top('pod/');
+ while (readdir $dh) {
+ next unless /\.pod\z/;
+ push @disk_pods, $_;
+ ++$disk_pods{$_};
+ }
# Things we copy from won't be in perl.pod
# Things we copy to won't be in MANIFEST
- @sources{values %Copies} = ();
- open(MANI, "../MANIFEST") || die "$0: opening ../MANIFEST failed: $!";
- while (<MANI>) {
+ my $filename = abs_from_top('MANIFEST');
+ open my $mani, '<', $filename or die "$0: opening $filename failed: $!";
+ while (<$mani>) {
if (m!^pod/([^.]+\.pod)\s+!i) {
push @manipods, $1;
} elsif (m!^README\.(\S+)\s+!i) {
push @manireadmes, "perl$1.pod";
}
}
- close(MANI);
+ close $mani or die $!;
@manipods{@manipods} = @manipods;
@manireadmes{@manireadmes} = @manireadmes;
- open(PERLPOD, "perl.pod") || die "$0: opening perl.pod failed: $!\n";
- while (<PERLPOD>) {
+ $filename = abs_from_top('pod/perl.pod');
+ open my $perlpod, '<', $filename or die "$0: opening $filename failed: $!\n";
+ while (<$perlpod>) {
if (/^For ease of access, /../^\(If you're intending /) {
if (/^\s+(perl\S*)\s+\w/) {
push @perlpods, "$1.pod";
}
}
}
- close(PERLPOD);
+ close $perlpod or die $!;
die "$0: could not find the pod listing of perl.pod\n"
unless @perlpods;
@perlpods{@perlpods} = @perlpods;
+ my @inconsistent;
foreach my $i (sort keys %disk_pods) {
- warn "$0: $i exists but is unknown by buildtoc\n"
+ push @inconsistent, "$0: $i exists but is unknown by buildtoc\n"
unless $our_pods{$i};
- warn "$0: $i exists but is unknown by ../MANIFEST\n"
+ push @inconsistent, "$0: $i exists but is unknown by ../MANIFEST\n"
if !$manipods{$i} && !$manireadmes{$i} && !$Copies{$i} && !$Generated{$i};
- warn "$0: $i exists but is unknown by perl.pod\n"
- if !$perlpods{$i} && !exists $sources{$i};
+ push @inconsistent, "$0: $i exists but is unknown by perl.pod\n"
+ if !$perlpods{$i} && !exists $Copies{$i};
}
+ my %BuildFiles;
+ ++$BuildFiles{$_} foreach values %Build;
+
foreach my $i (sort keys %our_pods) {
- warn "$0: $i is known by buildtoc but does not exist\n"
- unless $disk_pods{$i};
+ push @inconsistent, "$0: $i is known by buildtoc but does not exist\n"
+ unless $disk_pods{$i} or $BuildFiles{$i};
}
foreach my $i (sort keys %manipods) {
- warn "$0: $i is known by ../MANIFEST but does not exist\n"
+ push @inconsistent, "$0: $i is known by ../MANIFEST but does not exist\n"
unless $disk_pods{$i};
- warn "$0: $i is known by ../MANIFEST but is marked as generated\n"
+ push @inconsistent, "$0: $i is known by ../MANIFEST but is marked as generated\n"
if $Generated{$i};
}
foreach my $i (sort keys %perlpods) {
- warn "$0: $i is known by perl.pod but does not exist\n"
- unless $disk_pods{$i};
+ push @inconsistent, "$0: $i is known by perl.pod but does not exist\n"
+ unless $disk_pods{$i} or $BuildFiles{$i};
+ }
+ if ($Test) {
+ print "1..1\n";
+ if (@inconsistent) {
+ print "not ok 1\n";
+ die @inconsistent
+ }
+ print "ok 1\n";
+ exit;
+ }
+ else {
+ warn @inconsistent if @inconsistent;
}
}
# Find all the modules
-{
+if ($Build{toc}) {
my @modpods;
- find \&getpods => qw(../lib ../ext);
+ find \&getpods => abs_from_top('lib/');
sub getpods {
if (/\.p(od|m)$/) {
my $file = $File::Find::name;
- return if $file eq '../lib/Pod/Functions.pm'; # Used only by pod itself
+ return if $file =~ qr!/lib/Pod/Functions.pm\z!; # Used only by pod itself
return if $file =~ m!(?:^|/)t/!;
return if $file =~ m!lib/Attribute/Handlers/demo/!;
return if $file =~ m!lib/Net/FTP/.+\.pm!; # Hi, Graham! :-)
return if $file =~ m!XS/(?:APItest|Typemap)!;
my $pod = $file;
return if $pod =~ s/pm$/pod/ && -e $pod;
- die "$0: tut $File::Find::name" if $file =~ /TUT/;
unless (open (F, "< $_\0")) {
warn "$0: bogus <$file>: $!";
system "ls", "-l", $file;
while ($line = <F>) {
if ($line =~ /^=head1\s+NAME\b/) {
push @modpods, $file;
- #warn "GOOD $file\n";
close F;
return;
}
my %done;
for (@modpods) {
- #($name) = /(\w+)\.p(m|od)$/;
- my $name = path2modname($_);
+ my $name = $_;
+ $name =~ s/\.p(m|od)$//;
+ $name =~ s-.*?/lib/--;
+ $name =~ s-/-::-g;
+ next if $done{$name}++;
+
if ($name =~ /^[a-z]/) {
$Pragmata{$name} = $_;
} else {
- if ($done{$name}++) {
- # warn "already did $_\n";
- next;
- }
$Modules{$name} = $_;
}
}
# OK. Now a lot of ancillary function definitions follow
# Main program returns at "Do stuff"
-sub path2modname {
- local $_ = shift;
- s/\.p(m|od)$//;
- s-.*?/(lib|ext)/--;
- s-/-::-g;
- s/(\w+)::\1/$1/;
- return $_;
-}
-
-sub output ($);
-
-sub output_perltoc {
- open(OUT, ">perltoc.pod") || die "$0: creating perltoc.pod failed: $!";
+my $OUT;
- local $/ = '';
+sub do_toc {
+ my $filename = shift;
- ($_= <<"EOPOD2B") =~ s/^\t//gm && output($_);
+ ($_= <<"EOPOD2B") =~ s/^\t//gm and $OUT .= $_;
# !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
# This file is autogenerated by buildtoc from all the other pods.
#' make emacs happy
# All the things in the master list that happen to be pod filenames
- podset(map {"$_->[1].pod"} grep {defined $_ && @$_ == 3 && !$_->[0]{toc_omit}} @Master);
+ foreach (grep {defined $_ && @$_ == 3 && !$_->[0]{toc_omit}} @Master) {
+ podset($_->[1], abs_from_top("pod/$_->[1].pod"));
+ }
- ($_= <<"EOPOD2B") =~ s/^\t//gm && output($_);
+ ($_= <<"EOPOD2B") =~ s/^\t//gm and $OUT .= $_;
EOPOD2B
- podset(sort values %Pragmata);
+ foreach (sort keys %Pragmata) {
+ podset($_, $Pragmata{$_});
+ }
- ($_= <<"EOPOD2B") =~ s/^\t//gm && output($_);
+ ($_= <<"EOPOD2B") =~ s/^\t//gm and $OUT .= $_;
EOPOD2B
- podset( @Modules{ sort keys %Modules } );
+ foreach (sort keys %Modules) {
+ podset($_, $Modules{$_});
+ }
$_= <<"EOPOD2B";
EOPOD2B
s/^\t//gm;
- output $_;
- output "\n"; # flush $LINE
- close OUT;
+ $OUT .= "$_\n";
+
+ $OUT =~ s/\n\s+\n/\n\n/gs;
+ $OUT =~ s/\n{3,}/\n\n/g;
+
+ $OUT =~ s/([^\n]+)/wrap('', '', $1)/ge;
+
+ return $OUT;
}
# Below are all the auxiliary routines for generating perltoc.pod
my ($inhead1, $inhead2, $initem);
sub podset {
- local @ARGV = @_;
- my $pod;
+ my ($pod, $file) = @_;
+
+ local $/ = '';
- return unless scalar(@ARGV);
+ open my $fh, '<', $file or die "Can't open file '$file' for $pod: $!";
- while(<>) {
+ while(<$fh>) {
tr/\015//d;
if (s/^=head1 (NAME)\s*/=head2 /) {
- $pod = path2modname($ARGV);
unhead1();
- output "\n \n\n=head2 ";
- $_ = <>;
+ $OUT .= "\n\n=head2 ";
+ $_ = <$fh>;
# Remove svn keyword expansions from the Perl FAQ
s/ \(\$Revision: \d+ \$\)//g;
- if ( /^\s*$pod\b/ ) {
+ if ( /^\s*\Q$pod\E\b/ ) {
s/$pod\.pm/$pod/; # '.pm' in NAME !?
- output $_;
} else {
s/^/$pod, /;
- output $_;
}
- next;
}
- if (s/^=head1 (.*)/=item $1/) {
+ elsif (s/^=head1 (.*)/=item $1/) {
unhead2();
- output "=over 4\n\n" unless $inhead1;
+ $OUT .= "=over 4\n\n" unless $inhead1;
$inhead1 = 1;
- output $_; nl(); next;
+ $_ .= "\n";
}
- if (s/^=head2 (.*)/=item $1/) {
+ elsif (s/^=head2 (.*)/=item $1/) {
unitem();
- output "=over 4\n\n" unless $inhead2;
+ $OUT .= "=over 4\n\n" unless $inhead2;
$inhead2 = 1;
- output $_; nl(); next;
+ $_ .= "\n";
}
- if (s/^=item ([^=].*)/$1/) {
+ elsif (s/^=item ([^=].*)/$1/) {
next if $pod eq 'perldiag';
s/^\s*\*\s*$// && next;
s/^\s*\*\s*//;
s/\s+$//;
next if /^[\d.]+$/;
next if $pod eq 'perlmodlib' && /^ftp:/;
- ##print "=over 4\n\n" unless $initem;
- output ", " if $initem;
+ $OUT .= ", " if $initem;
$initem = 1;
s/\.$//;
s/^-X\b/-I<X>/;
- output $_; next;
}
- if (s/^=cut\s*\n//) {
- unhead1();
+ else {
+ unhead1() if /^=cut\s*\n/;
next;
}
+ $OUT .= $_;
}
}
sub unhead1 {
unhead2();
if ($inhead1) {
- output "\n\n=back\n\n";
+ $OUT .= "\n\n=back\n\n";
}
$inhead1 = 0;
}
sub unhead2 {
unitem();
if ($inhead2) {
- output "\n\n=back\n\n";
+ $OUT .= "\n\n=back\n\n";
}
$inhead2 = 0;
}
sub unitem {
if ($initem) {
- output "\n\n";
- ##print "\n\n=back\n\n";
+ $OUT .= "\n\n";
}
$initem = 0;
}
-sub nl {
- output "\n";
-}
-
-my $NEWLINE = 0; # how many newlines have we seen recently
-my $LINE; # what remains to be printed
-
-sub output ($) {
- for (split /(\n)/, shift) {
- if ($_ eq "\n") {
- if ($LINE) {
- print OUT wrap('', '', $LINE);
- $LINE = '';
- }
- if (($NEWLINE) < 2) {
- print OUT;
- $NEWLINE++;
- }
- }
- elsif (/\S/ && length) {
- $LINE .= $_;
- $NEWLINE = 0;
- }
- }
-}
-
# End of original buildtoc. From here on are routines to generate new sections
# for and inplace edit other files
sub generate_manifest {
- # Annyoingly unexpand doesn't consider it good form to replace a single
+ # Annoyingly, unexpand doesn't consider it good form to replace a single
# space before a tab with a tab
# Annoyingly (2) it returns read only values.
- my @temp = unexpand (map {sprintf "%-32s%s\n", @$_} @_);
+ my @temp = unexpand (map {sprintf "%-32s%s", @$_} @_);
map {s/ \t/\t\t/g; $_} @temp;
}
sub generate_manifest_pod {
sort keys %Pods, keys %Readmepods;
}
-sub generate_descrip_mms_3 {
- map qq{\t- If F\$Search("[.pod]$_").nes."" Then Delete/NoConfirm/Log [.pod]$_;*},
- sort keys %Generated, keys %Copies;
-}
-
sub generate_nmake_1 {
# XXX Fix this with File::Spec
(map {sprintf "\tcopy ..\\README.%-8s ..\\pod\\perl$_.pod\n", $_}
join " ", sort keys %Copies, keys %Generated,
map {"perl$_.pod"} keys %Readmes);
$line =~ s/$/ \\/mg;
+ $line =~ s/ \\$//;
$line;
}
}
sub do_manifest {
- my $name = shift;
+ my ($name, $prev) = @_;
my @manifest =
- grep {! m!^pod/[^.]+\.pod.*\n!}
- grep {! m!^README\.(\S+)! || $Ignore{$1}} @_;
- # Dictionary order - fold and handle non-word chars as nothing
- map { $_->[0] }
- sort { $a->[1] cmp $b->[1] || $a->[0] cmp $b->[0] }
- map { my $f = lc $_; $f =~ s/[^a-z0-9\s]//g; [ $_, $f ] }
- @manifest,
- &generate_manifest_pod(),
- &generate_manifest_readme();
+ grep {! m!^pod/[^.]+\.pod.*!}
+ grep {! m!^README\.(\S+)! || $Ignore{$1}} split "\n", $prev;
+ join "\n", (
+ # Dictionary order - fold and handle non-word chars as nothing
+ map { $_->[0] }
+ sort { $a->[1] cmp $b->[1] || $a->[0] cmp $b->[0] }
+ map { my $f = lc $_; $f =~ s/[^a-z0-9\s]//g; [ $_, $f ] }
+ @manifest,
+ &generate_manifest_pod(),
+ &generate_manifest_readme()), '';
}
sub do_nmake {
- my $name = shift;
- my $makefile = join '', @_;
- die "$0: $name contains NUL bytes" if $makefile =~ /\0/;
+ my ($name, $makefile) = @_;
$makefile =~ s/^\tcopy \.\.\\README.*\n/\0/gm;
verify_contiguous($name, $makefile, 'README copies');
# Now remove the other copies that follow
1 while $makefile =~ s/\0\tcopy .*\n/\0/gm;
$makefile =~ s/\0+/join ("", &generate_nmake_1)/se;
- $makefile =~ s{(del /f [^\n]+podchecker[^\n]+).*?(pod2html)}
- {"$1\n" . &generate_nmake_2."\n\t $2"}se;
+ $makefile =~ s{(-cd \$\(PODDIR\) && del /f[^\n]+).*?(-cd \.\.\\utils && del /f)}
+ {"$1\n" . &generate_nmake_2."\n\t$2"}se;
$makefile;
}
*do_dmake = *do_dmake = \&do_nmake;
sub do_perlpod {
- my $name = shift;
- my $pod = join '', @_;
+ my ($name, $pod) = @_;
unless ($pod =~ s{(For\ ease\ of\ access,\ .*\n)
(?:\s+[a-z]{4,}.*\n # fooo
}
sub do_podmak {
- my $name = shift;
- my $body = join '', @_;
+ my ($name, $body) = @_;
foreach my $variable (qw(pod man html tex)) {
die "$0: could not find $variable in $name"
unless $body =~ s{\n\U$variable\E = (?:[^\n]*\\\n)*[^\n]*}
}
sub do_vms {
- my $name = shift;
- my $makefile = join '', @_;
- die "$0: $name contains NUL bytes" if $makefile =~ /\0/;
+ my ($name, $makefile) = @_;
$makefile =~ s/\npod\d* =[^\n]*/\0/gs;
verify_contiguous($name, $makefile, 'pod assignments');
$makefile =~ s/\0+/join "\n", '', &generate_descrip_mms_1/se;
die "$0: $name contains NUL bytes" if $makefile =~ /\0/;
+# Looking for the macro defining the current perldelta:
+#PERLDELTA_CURRENT = [.pod]perl5139delta.pod
+
+ $makefile =~ s/\nPERLDELTA_CURRENT\s+=\s+\Q[.pod]perl\E\d+delta\.pod\n
+ /\0/sx;
+ verify_contiguous($name, $makefile, 'current perldelta macro');
+ $makefile =~ s/\0+/join "\n", '', "PERLDELTA_CURRENT = [.pod]$delta_target", ''/se;
+
# Looking for rules like this
# [.lib.pods]perl.pod : [.pod]perl.pod
# @ If F$Search("[.lib]pods.dir").eqs."" Then Create/Directory [.lib.pods]
verify_contiguous($name, $makefile, 'copy rules');
$makefile =~ s/\0+/join "\n", '', &generate_descrip_mms_2/se;
-# Looking for rules like this:
-# - If F$Search("[.pod]perldelta.pod").nes."" Then Delete/NoConfirm/Log [.pod]perldelta.pod;*
- $makefile =~ s!(?:\t- If F\$Search\("\[\.pod\]perl[a-z]+\Q.pod").nes."" Then Delete/NoConfirm/Log [.pod]perl\E[a-z]+\.pod;\*\n)+!\0!sg;
- verify_contiguous($name, $makefile, 'delete rules');
- $makefile =~ s/\0+/join "\n", &generate_descrip_mms_3, ''/se;
-
$makefile;
}
sub do_unix {
- my $name = shift;
- my $makefile_SH = join '', @_;
- die "$0: $name contains NUL bytes" if $makefile_SH =~ /\0/;
+ my ($name, $makefile_SH) = @_;
$makefile_SH =~ s{^(perltoc_pod_prereqs = extra.pods).*}
{join ' ', $1, map "pod/$_",
sort keys %Copies, grep {!/perltoc/} keys %Generated
}mge;
-# pod/perldelta.pod: pod/perl511delta.pod
-# cd pod && $(LNS) perl511delta.pod perldelta.pod
+# pod/perl511delta.pod: pod/perldelta.pod
+# cd pod && $(LNS) perldelta.pod perl511delta.pod
$makefile_SH =~ s!(
pod/perl[a-z0-9_]+\.pod: pod/perl[a-z0-9_]+\.pod
my $built;
while (my ($target, $name) = each %Targets) {
+ print "Working on target $target\n" if $Verbose;
next unless $Build{$target};
$built++;
- if ($target eq "toc") {
- print "Now processing $name\n" if $Verbose;
- &output_perltoc;
- print "Finished\n" if $Verbose;
- next;
- }
+ my ($orig, $mode);
print "Now processing $name\n" if $Verbose;
- open THING, $name or die "Can't open $name: $!";
- my @orig = <THING>;
- my $orig = join '', @orig;
- close THING;
- my @new = do {
+ if ($target ne "toc") {
+ local $/;
+ open THING, $name or die "Can't open $name: $!";
+ binmode THING;
+ $orig = <THING>;
+ close THING;
+ die "$0: $name contains NUL bytes" if $orig =~ /\0/;
+ }
+
+ my $new = do {
no strict 'refs';
- &{"do_$target"}($target, @orig);
+ &{"do_$target"}($target, $orig);
};
- my $new = join '', @new;
- if ($new eq $orig) {
- print "Was not modified\n" if $Verbose;
- next;
+
+ if (defined $orig) {
+ if ($new eq $orig) {
+ print "Was not modified\n" if $Verbose;
+ next;
+ }
+ $mode = (stat $name)[2] // die "$0: Can't stat $name: $!";
+ rename $name, "$name.old" or die "$0: Can't rename $name to $name.old: $!";
}
- rename $name, "$name.old" or die "$0: Can't rename $name to $name.old: $!";
+
open THING, ">$name" or die "$0: Can't open $name for writing: $!";
+ binmode THING;
print THING $new or die "$0: print to $name failed: $!";
- close THING or die die "$0: close $name failed: $!";
+ close THING or die "$0: close $name failed: $!";
+ if (defined $mode) {
+ chmod $mode & 0777, $name or die "$0: can't chmod $mode $name: $!";
+ }
}
warn "$0: was not instructed to build anything\n" unless $built;
https://perl5.git.perl.org / perl5.git / blobdiff