| 1 | #!./perl |
| 2 | |
| 3 | BEGIN { |
| 4 | chdir 't'; |
| 5 | @INC = '../lib'; |
| 6 | require './test.pl'; |
| 7 | } |
| 8 | use strict; |
| 9 | |
| 10 | plan tests => 2564; |
| 11 | |
| 12 | open(FOO,'op/read.t') || open(FOO,'t/op/read.t') || open(FOO,':op:read.t') || die "Can't open op.read"; |
| 13 | seek(FOO,4,0) or die "Seek failed: $!"; |
| 14 | my $buf; |
| 15 | my $got = read(FOO,$buf,4); |
| 16 | |
| 17 | is ($got, 4); |
| 18 | is ($buf, "perl"); |
| 19 | |
| 20 | seek (FOO,0,2) || seek(FOO,20000,0); |
| 21 | $got = read(FOO,$buf,4); |
| 22 | |
| 23 | is ($got, 0); |
| 24 | is ($buf, ""); |
| 25 | |
| 26 | # This is true if Config is not built, or if PerlIO is enabled |
| 27 | # ie assume that PerlIO is present, unless we know for sure otherwise. |
| 28 | my $has_perlio = !eval { |
| 29 | no warnings; |
| 30 | require Config; |
| 31 | !$Config::Config{useperlio} |
| 32 | }; |
| 33 | |
| 34 | my $tmpfile = tempfile(); |
| 35 | |
| 36 | my (@values, @buffers) = ('', ''); |
| 37 | |
| 38 | foreach (65, 161, 253, 9786) { |
| 39 | push @values, join "", map {chr $_} $_ .. $_ + 4; |
| 40 | push @buffers, join "", map {chr $_} $_ + 5 .. $_ + 20; |
| 41 | } |
| 42 | my @offsets = (0, 3, 7, 22, -1, -3, -5, -7); |
| 43 | my @lengths = (0, 2, 5, 10); |
| 44 | |
| 45 | foreach my $value (@values) { |
| 46 | foreach my $initial_buffer (@buffers) { |
| 47 | my @utf8 = 1; |
| 48 | if ($value !~ tr/\0-\377//c) { |
| 49 | # It's all 8 bit |
| 50 | unshift @utf8, 0; |
| 51 | } |
| 52 | SKIP: |
| 53 | foreach my $utf8 (@utf8) { |
| 54 | skip "Needs :utf8 layer but no perlio", 2 * @offsets * @lengths |
| 55 | if $utf8 and !$has_perlio; |
| 56 | |
| 57 | open FH, ">$tmpfile" or die "Can't open $tmpfile: $!"; |
| 58 | binmode FH, "utf8" if $utf8; |
| 59 | print FH $value; |
| 60 | close FH; |
| 61 | foreach my $offset (@offsets) { |
| 62 | foreach my $length (@lengths) { |
| 63 | # Will read the lesser of the length of the file and the |
| 64 | # read length |
| 65 | my $will_read = $value; |
| 66 | if ($length < length $will_read) { |
| 67 | substr ($will_read, $length) = ''; |
| 68 | } |
| 69 | # Going to trash this so need a copy |
| 70 | my $buffer = $initial_buffer; |
| 71 | |
| 72 | my $expect = $buffer; |
| 73 | if ($offset > 0) { |
| 74 | # Right pad with NUL bytes |
| 75 | $expect .= "\0" x $offset; |
| 76 | substr ($expect, $offset) = ''; |
| 77 | } |
| 78 | substr ($expect, $offset) = $will_read; |
| 79 | |
| 80 | open FH, $tmpfile or die "Can't open $tmpfile: $!"; |
| 81 | binmode FH, "utf8" if $utf8; |
| 82 | my $what = sprintf "%d into %d l $length o $offset", |
| 83 | ord $value, ord $buffer; |
| 84 | $what .= ' u' if $utf8; |
| 85 | $got = read (FH, $buffer, $length, $offset); |
| 86 | is ($got, length $will_read, "got $what"); |
| 87 | is ($buffer, $expect, "buffer $what"); |
| 88 | close FH; |
| 89 | } |
| 90 | } |
| 91 | } |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | |
| 96 | |