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#!./perl -w
# Tests for sprintf that do not fit the format of sprintf.t.
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
require './test.pl';
}
plan tests => 1370;
use strict;
use Config;
is(
sprintf("%.40g ",0.01),
sprintf("%.40g", 0.01)." ",
q(the sprintf "%.<number>g" optimization)
);
is(
sprintf("%.40f ",0.01),
sprintf("%.40f", 0.01)." ",
q(the sprintf "%.<number>f" optimization)
);
# cases of $i > 1 are against [perl #39126]
for my $i (1, 5, 10, 20, 50, 100) {
chop(my $utf8_format = "%-*s\x{100}");
my $string = "\xB4"x$i; # latin1 ACUTE or ebcdic COPYRIGHT
my $expect = $string." "x$i; # followed by 2*$i spaces
is(sprintf($utf8_format, 3*$i, $string), $expect,
"width calculation under utf8 upgrade, length=$i");
}
# check simultaneous width & precision with wide characters
for my $i (1, 3, 5, 10) {
my $string = "\x{0410}"x($i+10); # cyrillic capital A
my $expect = "\x{0410}"x$i; # cut down to exactly $i characters
my $format = "%$i.${i}s";
is(sprintf($format, $string), $expect,
"width & precision interplay with utf8 strings, length=$i");
}
# Used to mangle PL_sv_undef
fresh_perl_like(
'print sprintf "xxx%n\n"; print undef',
'Modification of a read-only value attempted at - line 1\.',
{ switches => [ '-w' ] },
q(%n should not be able to modify read-only constants),
);
# check overflows
for (int(~0/2+1), ~0, "9999999999999999999") {
is(eval {sprintf "%${_}d", 0}, undef, "no sprintf result expected %${_}d");
like($@, qr/^Integer overflow in format string for sprintf /, "overflow in sprintf");
is(eval {printf "%${_}d\n", 0}, undef, "no printf result expected %${_}d");
like($@, qr/^Integer overflow in format string for printf /, "overflow in printf");
}
# check %NNN$ for range bounds
{
my ($warn, $bad) = (0,0);
local $SIG{__WARN__} = sub {
if ($_[0] =~ /missing argument/i) {
$warn++
}
else {
$bad++
}
};
my $fmt = join('', map("%$_\$s%" . ((1 << 31)-$_) . '$s', 1..20));
my $result = sprintf $fmt, qw(a b c d);
is($result, "abcd", "only four valid values in $fmt");
is($warn, 36, "expected warnings");
is($bad, 0, "unexpected warnings");
}
{
foreach my $ord (0 .. 255) {
my $bad = 0;
local $SIG{__WARN__} = sub {
if ($_[0] !~ /^Invalid conversion in sprintf/) {
warn $_[0];
$bad++;
}
};
my $r = eval {sprintf '%v' . chr $ord};
is ($bad, 0, "pattern '%v' . chr $ord");
}
}
sub mysprintf_int_flags {
my ($fmt, $num) = @_;
die "wrong format $fmt" if $fmt !~ /^%([-+ 0]+)([1-9][0-9]*)d\z/;
my $flag = $1;
my $width = $2;
my $sign = $num < 0 ? '-' :
$flag =~ /\+/ ? '+' :
$flag =~ /\ / ? ' ' :
'';
my $abs = abs($num);
my $padlen = $width - length($sign.$abs);
return
$flag =~ /0/ && $flag !~ /-/ # do zero padding
? $sign . '0' x $padlen . $abs
: $flag =~ /-/ # left or right
? $sign . $abs . ' ' x $padlen
: ' ' x $padlen . $sign . $abs;
}
# Whole tests for "%4d" with 2 to 4 flags;
# total counts: 3 * (4**2 + 4**3 + 4**4) == 1008
my @flags = ("-", "+", " ", "0");
for my $num (0, -1, 1) {
for my $f1 (@flags) {
for my $f2 (@flags) {
for my $f3 ('', @flags) { # '' for doubled flags
my $flag = $f1.$f2.$f3;
my $width = 4;
my $fmt = '%'."${flag}${width}d";
my $result = sprintf($fmt, $num);
my $expect = mysprintf_int_flags($fmt, $num);
is($result, $expect, qq/sprintf("$fmt",$num)/);
next if $f3 eq '';
for my $f4 (@flags) { # quadrupled flags
my $flag = $f1.$f2.$f3.$f4;
my $fmt = '%'."${flag}${width}d";
my $result = sprintf($fmt, $num);
my $expect = mysprintf_int_flags($fmt, $num);
is($result, $expect, qq/sprintf("$fmt",$num)/);
}
}
}
}
}
# test that %f doesn't panic with +Inf, -Inf, NaN [perl #45383]
foreach my $n (2**1e100, -2**1e100, 2**1e100/2**1e100) { # +Inf, -Inf, NaN
eval { my $f = sprintf("%f", $n); };
is $@, "", "sprintf(\"%f\", $n)";
}
# test %ll formats with and without HAS_QUAD
eval { my $q = pack "q", 0 };
my $Q = $@ eq '';
my @tests = (
[ '%lld' => [qw( 4294967296 -100000000000000 )] ],
[ '%lli' => [qw( 4294967296 -100000000000000 )] ],
[ '%llu' => [qw( 4294967296 100000000000000 )] ],
[ '%Ld' => [qw( 4294967296 -100000000000000 )] ],
[ '%Li' => [qw( 4294967296 -100000000000000 )] ],
[ '%Lu' => [qw( 4294967296 100000000000000 )] ],
);
for my $t (@tests) {
my($fmt, $nums) = @$t;
for my $num (@$nums) {
my $w; local $SIG{__WARN__} = sub { $w = shift };
is(sprintf($fmt, $num), $Q ? $num : $fmt, "quad: $fmt -> $num");
like($w, $Q ? '' : qr/Invalid conversion in sprintf: "$fmt"/, "warning: $fmt");
}
}
# Check unicode vs byte length
for my $width (1,2,3,4,5,6,7) {
for my $precis (1,2,3,4,5,6,7) {
my $v = "\x{20ac}\x{20ac}";
my $format = "%" . $width . "." . $precis . "s";
my $chars = ($precis > 2 ? 2 : $precis);
my $space = ($width < 2 ? 0 : $width - $chars);
fresh_perl_is(
'my $v = "\x{20ac}\x{20ac}"; my $x = sprintf "'.$format.'", $v; $x =~ /^(\s*)(\S*)$/; print "$_" for map {length} $1, $2',
"$space$chars",
{},
q(sprintf ").$format.q(", "\x{20ac}\x{20ac}"),
);
}
}
# Overload count
package o { use overload '""', sub { ++our $count; $_[0][0]; } }
my $o = bless ["\x{100}"], o::;
() = sprintf "%1s", $o;
is $o::count, '1', 'sprinf %1s overload count';
$o::count = 0;
() = sprintf "%.1s", $o;
is $o::count, '1', 'sprinf %.1s overload count';
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