xref: /openbsd/gnu/usr.bin/perl/t/io/tell.t (revision 404b540a) 
1#!./perl
2
3BEGIN {
4    chdir 't' if -d 't';
5    @INC = '../lib';
6    require './test.pl';
7}
8
9print "1..28\n";
10
11$TST = 'TST';
12
13$Is_Dosish = ($^O eq 'MSWin32' or $^O eq 'NetWare' or $^O eq 'dos' or
14              $^O eq 'os2' or $^O eq 'mint' or $^O eq 'cygwin' or
15              $^O =~ /^uwin/);
16
17open($TST, 'harness') || (die "Can't open harness");
18binmode $TST if $Is_Dosish;
19if (eof(TST)) { print "not ok 1\n"; } else { print "ok 1\n"; }
20
21$firstline = <$TST>;
22$secondpos = tell;
23
24$x = 0;
25while (<TST>) {
26    if (eof) {$x++;}
27}
28if ($x == 1) { print "ok 2\n"; } else { print "not ok 2\n"; }
29
30$lastpos = tell;
31
32unless (eof) { print "not ok 3\n"; } else { print "ok 3\n"; }
33
34if (seek($TST,0,0)) { print "ok 4\n"; } else { print "not ok 4\n"; }
35
36if (eof) { print "not ok 5\n"; } else { print "ok 5\n"; }
37
38if ($firstline eq <TST>) { print "ok 6\n"; } else { print "not ok 6\n"; }
39
40if ($secondpos == tell) { print "ok 7\n"; } else { print "not ok 7\n"; }
41
42if (seek(TST,0,1)) { print "ok 8\n"; } else { print "not ok 8\n"; }
43
44if (eof($TST)) { print "not ok 9\n"; } else { print "ok 9\n"; }
45
46if ($secondpos == tell) { print "ok 10\n"; } else { print "not ok 10\n"; }
47
48if (seek(TST,0,2)) { print "ok 11\n"; } else { print "not ok 11\n"; }
49
50if ($lastpos == tell) { print "ok 12\n"; } else { print "not ok 12\n"; }
51
52unless (eof) { print "not ok 13\n"; } else { print "ok 13\n"; }
53
54if ($. == 0) { print "not ok 14\n"; } else { print "ok 14\n"; }
55
56$curline = $.;
57open(OTHER, 'harness') || (die "Can't open harness: $!");
58binmode OTHER if (($^O eq 'MSWin32') || ($^O eq 'NetWare'));
59
60{
61    local($.);
62
63    if ($. == 0) { print "not ok 15\n"; } else { print "ok 15\n"; }
64
65    tell OTHER;
66    if ($. == 0) { print "ok 16\n"; } else { print "not ok 16\n"; }
67
68    $. = 5;
69    scalar <OTHER>;
70    if ($. == 6) { print "ok 17\n"; } else { print "not ok 17\n"; }
71}
72
73if ($. == $curline) { print "ok 18\n"; } else { print "not ok 18\n"; }
74
75{
76    local($.);
77
78    scalar <OTHER>;
79    if ($. == 7) { print "ok 19\n"; } else { print "not ok 19\n"; }
80}
81
82if ($. == $curline) { print "ok 20\n"; } else { print "not ok 20\n"; }
83
84{
85    local($.);
86
87    tell OTHER;
88    if ($. == 7) { print "ok 21\n"; } else { print "not ok 21\n"; }
89}
90
91close(OTHER);
92{
93    no warnings 'closed';
94    if (tell(OTHER) == -1)  { print "ok 22\n"; } else { print "not ok 22\n"; }
95}
96{
97    no warnings 'unopened';
98    if (tell(ETHER) == -1)  { print "ok 23\n"; } else { print "not ok 23\n"; }
99}
100
101# ftell(STDIN) (or any std streams) is undefined, it can return -1 or
102# something else.  ftell() on pipes, fifos, and sockets is defined to
103# return -1.
104
105my $written = tempfile();
106
107close($TST);
108open($tst,">$written")  || die "Cannot open $written:$!";
109binmode $tst if $Is_Dosish;
110
111if (tell($tst) == 0) { print "ok 24\n"; } else { print "not ok 24\n"; }
112
113print $tst "fred\n";
114
115if (tell($tst) == 5) { print "ok 25\n"; } else { print "not ok 25\n"; }
116
117print $tst "more\n";
118
119if (tell($tst) == 10) { print "ok 26\n"; } else { print "not ok 26\n"; }
120
121close($tst);
122
123open($tst,"+>>$written")  || die "Cannot open $written:$!";
124binmode $tst if $Is_Dosish;
125
126if (0)
127{
128 # :stdio does not pass these so ignore them for now
129
130if (tell($tst) == 0) { print "ok 27\n"; } else { print "not ok 27\n"; }
131
132$line = <$tst>;
133
134if ($line eq "fred\n") { print "ok 29\n"; } else { print "not ok 29\n"; }
135
136if (tell($tst) == 5) { print "ok 30\n"; } else { print "not ok 30\n"; }
137
138}
139
140print $tst "xxxx\n";
141
142if (tell($tst) == 15 ||
143    tell($tst) == 5) # unset PERLIO or PERLIO=stdio (e.g. HP-UX, Solaris)
144{ print "ok 27\n"; } else { print "not ok 27\n"; }
145
146close($tst);
147
148open($tst,">$written")  || die "Cannot open $written:$!";
149print $tst "foobar";
150close $tst;
151open($tst,">>$written")  || die "Cannot open $written:$!";
152
153# This test makes a questionable assumption that the file pointer will
154# be at eof after opening a file but before seeking, reading, or writing.
155# Only known failure is on cygwin.
156my $todo = $^O eq "cygwin" && &PerlIO::get_layers($tst) eq 'stdio'
157    && ' # TODO: file pointer not at eof';
158
159if (tell($tst) == 6)
160{ print "ok 28$todo\n"; } else { print "not ok 28$todo\n"; }
161close $tst;
162
163