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a687059c LW |
1 | #!./perl |
2 | ||
79072805 | 3 | # $RCSfile: read.t,v $$Revision: 4.1 $$Date: 92/08/07 18:28:17 $ |
a687059c | 4 | |
1a24607b NC |
5 | BEGIN { |
6 | chdir 't'; | |
7 | @INC = '../lib'; | |
8 | require './test.pl'; | |
9 | } | |
10 | use strict; | |
a687059c | 11 | |
8c515176 | 12 | plan tests => 2564; |
a687059c | 13 | |
dc459aad | 14 | open(FOO,'op/read.t') || open(FOO,'t/op/read.t') || open(FOO,':op:read.t') || die "Can't open op.read"; |
1a24607b NC |
15 | seek(FOO,4,0) or die "Seek failed: $!"; |
16 | my $buf; | |
17 | my $got = read(FOO,$buf,4); | |
a687059c | 18 | |
1a24607b NC |
19 | is ($got, 4); |
20 | is ($buf, "perl"); | |
a687059c | 21 | |
a0d0e21e | 22 | seek (FOO,0,2) || seek(FOO,20000,0); |
a687059c LW |
23 | $got = read(FOO,$buf,4); |
24 | ||
1a24607b NC |
25 | is ($got, 0); |
26 | is ($buf, ""); | |
69938bba | 27 | |
39cd9b99 NC |
28 | # This is true if Config is not built, or if PerlIO is enabled |
29 | # ie assume that PerlIO is present, unless we know for sure otherwise. | |
30 | my $has_perlio = !eval { | |
31 | no warnings; | |
32 | require Config; | |
33 | !$Config::Config{useperlio} | |
34 | }; | |
35 | ||
69938bba NC |
36 | my $tmpfile = 'Op_read.tmp'; |
37 | ||
846e3505 | 38 | END { 1 while unlink $tmpfile } |
69938bba NC |
39 | |
40 | my (@values, @buffers) = ('', ''); | |
41 | ||
8c515176 | 42 | foreach (65, 161, 253, 9786) { |
69938bba NC |
43 | push @values, join "", map {chr $_} $_ .. $_ + 4; |
44 | push @buffers, join "", map {chr $_} $_ + 5 .. $_ + 20; | |
45 | } | |
39cd9b99 NC |
46 | my @offsets = (0, 3, 7, 22, -1, -3, -5, -7); |
47 | my @lengths = (0, 2, 5, 10); | |
69938bba NC |
48 | |
49 | foreach my $value (@values) { | |
50 | foreach my $initial_buffer (@buffers) { | |
51 | my @utf8 = 1; | |
52 | if ($value !~ tr/\0-\377//c) { | |
53 | # It's all 8 bit | |
54 | unshift @utf8, 0; | |
55 | } | |
39cd9b99 | 56 | SKIP: |
1dd30107 | 57 | foreach my $utf8 (@utf8) { |
39cd9b99 NC |
58 | skip "Needs :utf8 layer but no perlio", 2 * @offsets * @lengths |
59 | if $utf8 and !$has_perlio; | |
60 | ||
1dd30107 NC |
61 | 1 while unlink $tmpfile; |
62 | open FH, ">$tmpfile" or die "Can't open $tmpfile: $!"; | |
63 | binmode FH, "utf8" if $utf8; | |
64 | print FH $value; | |
65 | close FH; | |
39cd9b99 NC |
66 | foreach my $offset (@offsets) { |
67 | foreach my $length (@lengths) { | |
1dd30107 NC |
68 | # Will read the lesser of the length of the file and the |
69 | # read length | |
70 | my $will_read = $value; | |
71 | if ($length < length $will_read) { | |
72 | substr ($will_read, $length) = ''; | |
73 | } | |
74 | # Going to trash this so need a copy | |
75 | my $buffer = $initial_buffer; | |
76 | ||
77 | my $expect = $buffer; | |
78 | if ($offset > 0) { | |
79 | # Right pad with NUL bytes | |
80 | $expect .= "\0" x $offset; | |
81 | substr ($expect, $offset) = ''; | |
82 | } | |
83 | substr ($expect, $offset) = $will_read; | |
84 | ||
85 | open FH, $tmpfile or die "Can't open $tmpfile: $!"; | |
86 | binmode FH, "utf8" if $utf8; | |
87 | my $what = sprintf "%d into %d l $length o $offset", | |
88 | ord $value, ord $buffer; | |
89 | $what .= ' u' if $utf8; | |
90 | $got = read (FH, $buffer, $length, $offset); | |
91 | is ($got, length $will_read, "got $what"); | |
92 | is ($buffer, $expect, "buffer $what"); | |
846e3505 | 93 | close FH; |
69938bba | 94 | } |
69938bba NC |
95 | } |
96 | } | |
69938bba NC |
97 | } |
98 | } | |
99 | ||
100 | ||
101 |