1#!./perl -w 2 3BEGIN { 4 chdir 't' if -d 't'; 5 @INC = '../lib'; 6 require './test.pl'; 7} 8 9plan tests => 1368; 10 11use strict; 12use Config; 13 14is( 15 sprintf("%.40g ",0.01), 16 sprintf("%.40g", 0.01)." ", 17 q(the sprintf "%.<number>g" optimization) 18); 19is( 20 sprintf("%.40f ",0.01), 21 sprintf("%.40f", 0.01)." ", 22 q(the sprintf "%.<number>f" optimization) 23); 24 25# cases of $i > 1 are against [perl #39126] 26for my $i (1, 5, 10, 20, 50, 100) { 27 chop(my $utf8_format = "%-*s\x{100}"); 28 my $string = "\xB4"x$i; # latin1 ACUTE or ebcdic COPYRIGHT 29 my $expect = $string." "x$i; # followed by 2*$i spaces 30 is(sprintf($utf8_format, 3*$i, $string), $expect, 31 "width calculation under utf8 upgrade, length=$i"); 32} 33 34# check simultaneous width & precision with wide characters 35for my $i (1, 3, 5, 10) { 36 my $string = "\x{0410}"x($i+10); # cyrillic capital A 37 my $expect = "\x{0410}"x$i; # cut down to exactly $i characters 38 my $format = "%$i.${i}s"; 39 is(sprintf($format, $string), $expect, 40 "width & precision interplay with utf8 strings, length=$i"); 41} 42 43# Used to mangle PL_sv_undef 44fresh_perl_like( 45 'print sprintf "xxx%n\n"; print undef', 46 'Modification of a read-only value attempted at - line 1\.', 47 { switches => [ '-w' ] }, 48 q(%n should not be able to modify read-only constants), 49); 50 51# check overflows 52for (int(~0/2+1), ~0, "9999999999999999999") { 53 is(eval {sprintf "%${_}d", 0}, undef, "no sprintf result expected %${_}d"); 54 like($@, qr/^Integer overflow in format string for sprintf /, "overflow in sprintf"); 55 is(eval {printf "%${_}d\n", 0}, undef, "no printf result expected %${_}d"); 56 like($@, qr/^Integer overflow in format string for prtf /, "overflow in printf"); 57} 58 59# check %NNN$ for range bounds 60{ 61 my ($warn, $bad) = (0,0); 62 local $SIG{__WARN__} = sub { 63 if ($_[0] =~ /missing argument/i) { 64 $warn++ 65 } 66 else { 67 $bad++ 68 } 69 }; 70 71 my $fmt = join('', map("%$_\$s%" . ((1 << 31)-$_) . '$s', 1..20)); 72 my $result = sprintf $fmt, qw(a b c d); 73 is($result, "abcd", "only four valid values in $fmt"); 74 is($warn, 36, "expected warnings"); 75 is($bad, 0, "unexpected warnings"); 76} 77 78{ 79 foreach my $ord (0 .. 255) { 80 my $bad = 0; 81 local $SIG{__WARN__} = sub { 82 if ($_[0] !~ /^Invalid conversion in sprintf/) { 83 warn $_[0]; 84 $bad++; 85 } 86 }; 87 my $r = eval {sprintf '%v' . chr $ord}; 88 is ($bad, 0, "pattern '%v' . chr $ord"); 89 } 90} 91 92sub mysprintf_int_flags { 93 my ($fmt, $num) = @_; 94 die "wrong format $fmt" if $fmt !~ /^%([-+ 0]+)([1-9][0-9]*)d\z/; 95 my $flag = $1; 96 my $width = $2; 97 my $sign = $num < 0 ? '-' : 98 $flag =~ /\+/ ? '+' : 99 $flag =~ /\ / ? ' ' : 100 ''; 101 my $abs = abs($num); 102 my $padlen = $width - length($sign.$abs); 103 return 104 $flag =~ /0/ && $flag !~ /-/ # do zero padding 105 ? $sign . '0' x $padlen . $abs 106 : $flag =~ /-/ # left or right 107 ? $sign . $abs . ' ' x $padlen 108 : ' ' x $padlen . $sign . $abs; 109} 110 111# Whole tests for "%4d" with 2 to 4 flags; 112# total counts: 3 * (4**2 + 4**3 + 4**4) == 1008 113 114my @flags = ("-", "+", " ", "0"); 115for my $num (0, -1, 1) { 116 for my $f1 (@flags) { 117 for my $f2 (@flags) { 118 for my $f3 ('', @flags) { # '' for doubled flags 119 my $flag = $f1.$f2.$f3; 120 my $width = 4; 121 my $fmt = '%'."${flag}${width}d"; 122 my $result = sprintf($fmt, $num); 123 my $expect = mysprintf_int_flags($fmt, $num); 124 is($result, $expect, qq/sprintf("$fmt",$num)/); 125 126 next if $f3 eq ''; 127 128 for my $f4 (@flags) { # quadrupled flags 129 my $flag = $f1.$f2.$f3.$f4; 130 my $fmt = '%'."${flag}${width}d"; 131 my $result = sprintf($fmt, $num); 132 my $expect = mysprintf_int_flags($fmt, $num); 133 is($result, $expect, qq/sprintf("$fmt",$num)/); 134 } 135 } 136 } 137 } 138} 139 140# test that %f doesn't panic with +Inf, -Inf, NaN [perl #45383] 141foreach my $n (2**1e100, -2**1e100, 2**1e100/2**1e100) { # +Inf, -Inf, NaN 142 eval { my $f = sprintf("%f", $n); }; 143 is $@, "", "sprintf(\"%f\", $n)"; 144} 145 146# test %ll formats with and without HAS_QUAD 147eval { my $q = pack "q", 0 }; 148my $Q = $@ eq ''; 149 150my @tests = ( 151 [ '%lld' => [qw( 4294967296 -100000000000000 )] ], 152 [ '%lli' => [qw( 4294967296 -100000000000000 )] ], 153 [ '%llu' => [qw( 4294967296 100000000000000 )] ], 154 [ '%Ld' => [qw( 4294967296 -100000000000000 )] ], 155 [ '%Li' => [qw( 4294967296 -100000000000000 )] ], 156 [ '%Lu' => [qw( 4294967296 100000000000000 )] ], 157); 158 159for my $t (@tests) { 160 my($fmt, $nums) = @$t; 161 for my $num (@$nums) { 162 my $w; local $SIG{__WARN__} = sub { $w = shift }; 163 is(sprintf($fmt, $num), $Q ? $num : $fmt, "quad: $fmt -> $num"); 164 like($w, $Q ? '' : qr/Invalid conversion in sprintf: "$fmt"/, "warning: $fmt"); 165 } 166} 167 168# Check unicode vs byte length 169for my $width (1,2,3,4,5,6,7) { 170 for my $precis (1,2,3,4,5,6,7) { 171 my $v = "\x{20ac}\x{20ac}"; 172 my $format = "%" . $width . "." . $precis . "s"; 173 my $chars = ($precis > 2 ? 2 : $precis); 174 my $space = ($width < 2 ? 0 : $width - $chars); 175 fresh_perl_is( 176 'my $v = "\x{20ac}\x{20ac}"; my $x = sprintf "'.$format.'", $v; $x =~ /^(\s*)(\S*)$/; print "$_" for map {length} $1, $2', 177 "$space$chars", 178 {}, 179 q(sprintf ").$format.q(", "\x{20ac}\x{20ac}"), 180 ); 181 } 182} 183