a A string with arbitrary binary data, will be null padded.
A An ascii string, will be space padded.
+ Z A null terminated (asciz) string, will be null padded.
+
b A bit string (ascending bit order, like vec()).
B A bit string (descending bit order).
h A hex string (low nybble first).
=item *
Each letter may optionally be followed by a number giving a repeat
-count. With all types except C<"a">, C<"A">, C<"b">, C<"B">, C<"h">,
+count. With all types except C<"a">, C<"A">, C<"Z">, C<"b">, C<"B">, C<"h">,
C<"H">, and C<"P"> the pack function will gobble up that many values from
the LIST. A C<*> for the repeat count means to use however many items are
left.
=item *
-The C<"a"> and C<"A"> types gobble just one value, but pack it as a
-string of length count, padding with nulls or spaces as necessary.
-When unpacking, C<"A"> strips trailing spaces and nulls, and C<"a">
-returns data verbatim.
+The C<"a">, C<"A">, and C<"Z"> types gobble just one value, but pack it as a
+string of length count, padding with nulls or spaces as necessary. When
+unpacking, C<"A"> strips trailing spaces and nulls, C<"Z"> strips everything
+after the first null, and C<"a"> returns data verbatim.
=item *
$foo = pack("i9pl", gmtime);
# a real struct tm (on my system anyway)
+ $utmp_template = "Z8 Z8 Z16 L";
+ $utmp = pack($utmp_template, @utmp1);
+ # a struct utmp (BSDish)
+
+ @utmp2 = unpack($utmp_template, $utmp);
+ # "@utmp1" eq "@utmp2"
+
sub bintodec {
unpack("N", pack("B32", substr("0" x 32 . shift, -32)));
}
#!./perl
-# $RCSfile: pack.t,v $$Revision: 4.1 $$Date: 92/08/07 18:28:11 $
+BEGIN {
+ chdir 't' if -d 't';
+ unshift @INC, '../lib' if -d '../lib';
+ require Config; import Config;
+}
-print "1..124\n";
+print "1..142\n";
$format = "c2 x5 C C x s d i l a6";
# Need the expression in here to force ary[5] to be numeric. This avoids
? "ok 6\n" : "not ok 6 $x\n";
my $sum = 129; # ASCII
-$sum = 103 if ($^O eq 'os390'); # An EBCDIC variant.
+$sum = 103 if ($Config{ebcdic} eq 'define');
print +($x = unpack("%32B*", "Now is the time for all good blurfl")) == $sum
? "ok 7\n" : "not ok 7 $x\n";
print "not " unless length(pack("V", 0)) == 4;
print "ok ", $test++, "\n";
-# 41..56: test unpack-pack lengths (no gargabe bytes at the end)
+# 41..56: test unpack-pack lengths
my @templates = qw(c C i I s S l L n N v V f d);
# 57..60: uuencode/decode
-$in = join "", map { chr } 0..255;
+# Note that first uuencoding known 'text' data and then checking the
+# binary values of the uuencoded version would not be portable between
+# character sets. Uuencoding is meant for encoding binary data, not
+# text data.
+
+$in = pack 'C*', 0 .. 255;
# just to be anal, we do some random tr/`/ /
$uu = <<'EOUU';
print "not " unless unpack('u', $uu) eq $in;
print "ok ", $test++, "\n";
-# Note that first uuencoding known 'text' data and then checking the
-# binary values of the uuencoded version would not be portable between
-# character sets. Uuencoding is meant for encoding binary data, not
-# text data.
+# 61..72: test the ascii template types (A, a, Z)
+
+print "not " unless pack('A*', "foo\0bar\0 ") eq "foo\0bar\0 ";
+print "ok ", $test++, "\n";
+
+print "not " unless pack('A11', "foo\0bar\0 ") eq "foo\0bar\0 ";
+print "ok ", $test++, "\n";
+
+print "not " unless unpack('A*', "foo\0bar \0") eq "foo\0bar";
+print "ok ", $test++, "\n";
+
+print "not " unless unpack('A8', "foo\0bar \0") eq "foo\0bar";
+print "ok ", $test++, "\n";
+
+print "not " unless pack('a*', "foo\0bar\0 ") eq "foo\0bar\0 ";
+print "ok ", $test++, "\n";
+
+print "not " unless pack('a11', "foo\0bar\0 ") eq "foo\0bar\0 \0\0";
+print "ok ", $test++, "\n";
+
+print "not " unless unpack('a*', "foo\0bar \0") eq "foo\0bar \0";
+print "ok ", $test++, "\n";
+
+print "not " unless unpack('a8', "foo\0bar \0") eq "foo\0bar ";
+print "ok ", $test++, "\n";
+
+print "not " unless pack('Z*', "foo\0bar\0 ") eq "foo\0bar\0 ";
+print "ok ", $test++, "\n";
+
+print "not " unless pack('Z11', "foo\0bar\0 ") eq "foo\0bar\0 \0\0";
+print "ok ", $test++, "\n";
+
+print "not " unless unpack('Z*', "foo\0bar \0") eq "foo";
+print "ok ", $test++, "\n";
+
+print "not " unless unpack('Z8', "foo\0bar \0") eq "foo";
+print "ok ", $test++, "\n";
+
+# 73..78: packing native shorts/ints/longs
+
+# integrated from mainline and don't want to change numbers all the way
+# down. native ints are not supported in _0x so comment out checks
+#print "not " unless length(pack("s!", 0)) == $Config{shortsize};
+print "ok ", $test++, "\n";
+
+#print "not " unless length(pack("i!", 0)) == $Config{intsize};
+print "ok ", $test++, "\n";
+
+#print "not " unless length(pack("l!", 0)) == $Config{longsize};
+print "ok ", $test++, "\n";
+
+#print "not " unless length(pack("s!", 0)) <= length(pack("i!", 0));
+print "ok ", $test++, "\n";
+
+#print "not " unless length(pack("i!", 0)) <= length(pack("l!", 0));
+print "ok ", $test++, "\n";
+
+#print "not " unless length(pack("i!", 0)) == length(pack("i", 0));
+print "ok ", $test++, "\n";
-# 61..120: pack <-> unpack bijectionism
+# 79..138: pack <-> unpack bijectionism
-# 61.. 65: c
+# 79.. 83 c
foreach my $c (-128, -1, 0, 1, 127) {
print "not " unless unpack("c", pack("c", $c)) == $c;
print "ok ", $test++, "\n";
}
-# 66.. 70: C
+# 84.. 88: C
foreach my $C (0, 1, 127, 128, 255) {
print "not " unless unpack("C", pack("C", $C)) == $C;
print "ok ", $test++, "\n";
}
-# 71.. 75: s
+# 89.. 93: s
foreach my $s (-32768, -1, 0, 1, 32767) {
print "not " unless unpack("s", pack("s", $s)) == $s;
print "ok ", $test++, "\n";
}
-# 76.. 80: S
+# 94.. 98: S
foreach my $S (0, 1, 32767, 32768, 65535) {
print "not " unless unpack("S", pack("S", $S)) == $S;
print "ok ", $test++, "\n";
}
-# 81.. 85: i
+# 99..103: i
foreach my $i (-2147483648, -1, 0, 1, 2147483647) {
print "not " unless unpack("i", pack("i", $i)) == $i;
print "ok ", $test++, "\n";
}
-# 86..90: I
+# 104..108: I
foreach my $I (0, 1, 2147483647, 2147483648, 4294967295) {
print "not " unless unpack("I", pack("I", $I)) == $I;
print "ok ", $test++, "\n";
}
-# 91.. 95: l
+# 109..113: l
foreach my $l (-2147483648, -1, 0, 1, 2147483647) {
print "not " unless unpack("l", pack("l", $l)) == $l;
print "ok ", $test++, "\n";
}
-# 96..100: L
+# 114..118: L
foreach my $L (0, 1, 2147483647, 2147483648, 4294967295) {
print "not " unless unpack("L", pack("L", $L)) == $L;
print "ok ", $test++, "\n";
}
-# 101..105: n
+# 119..123: n
foreach my $n (0, 1, 32767, 32768, 65535) {
print "not " unless unpack("n", pack("n", $n)) == $n;
print "ok ", $test++, "\n";
}
-# 106..110: v
+# 124..128: v
foreach my $v (0, 1, 32767, 32768, 65535) {
print "not " unless unpack("v", pack("v", $v)) == $v;
print "ok ", $test++, "\n";
}
-# 111..115: N
+# 129..133: N
foreach my $N (0, 1, 2147483647, 2147483648, 4294967295) {
print "not " unless unpack("N", pack("N", $N)) == $N;
print "ok ", $test++, "\n";
}
-# 116..120: V
+# 134..138: V
foreach my $V (0, 1, 2147483647, 2147483648, 4294967295) {
print "not " unless unpack("V", pack("V", $V)) == $V;
print "ok ", $test++, "\n";
}
-# 120..124: pack nvNV byteorders
+# 139..142: pack nvNV byteorders
print "not " unless pack("n", 0xdead) eq "\xde\xad";
print "ok ", $test++, "\n";
projects / perl.git / commitdiff
