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CGI::Bus::file - file object
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CGI::Bus::file - file object
use CGI::Bus;
$s =CGI::Bus->new();
$s->file(-name=>'t.txt', -mode=>'rwc')->store('aa','bb');
This module is a file object encapsulating IO::File object.
See CGI::Bus::Base for inherited slots and methods.
- -iofile
-
IO::File object
- -lock
-
Current file lock, 0 or undef is used when unlocked
- -mode
-
File access mode, default is 'r'
- -name
-
File name
- -perm
-
File permissions when to be created, default is 0666
- AUTOLOAD
-
'O_XXX' Fcntl call or
'LOCK_XX' Fcntl call
or IO::File method call
- close -> self object
-
Close file opened
- dump ( data ) -> self object
-
- dump -> data dump loaded
-
- dumpload -> data dump loaded
-
- dumpstore ( data ) -> self object
-
Store and load data structure to or from file using
store, load,
CGI::Bus::dumpout, CGI::Bus::dumpin.
seeks to the beginning of the file before read or write.
- iofile ( ?file open args ) -> IO:File object
-
Returns internal IO::File object.
Create it if not exists or if arguments present to open file.
See
open for arguments.
- load ( ?-asb, ?sub ) -> data loaded
-
Reads file into memory as array or list ('-a'), text scalar ('-s'),
binary scalar ('-b').
Default, '-a' or '-b', is determined with wantarray.
Locks file with 'LOCK_SH' if there is no shared or exclusive lock,
lock remains after operation.
seeks to the beginning of the file before read.
If sub is defined, it is evaluated for each row read into local $_,
and with '-a' option results of each evaluation are returned as a list,
true is returned otherwise.
- lock ( lock mode ) -> self object
-
- lock -> current lock mode
-
Locks or unlocks file, or returns current lock.
Lock mode may be Fcntl 'LOCK_SH', 'LOCK_EX', 'LOCK_UN',
or strings 'sh', 'ex', 'un' or '0'.
0 means unlocked file.
- open ( filename, ?mode, ?perm ) -> self object
-
Open file.
Default mode is 'r',
mode may be Fcntl constants like 'O_RDONLY',
'fopen' mode signs 'r', 'w', 'a', 'r+', 'a+',
mode strings 'rw' for O_RDWR and 'rwc' for O_RDWR|O_CREAT.
Default permission is 0666.
- seek ( position, ?whence ) -> self object
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Filehandle positioning.
Default positioning method is 0 - 'SEEK_SET'.
- store ( ?-b, data to store ) -> self object
-
Writes given data into file.
Locks file with 'LOCK_EX' if there is no exclusive lock,
lock remains after operation.
Does not
seeks, call seek before store call.
Option '-b' chooses binary mode and
binary write.
Without '-b', each element of data list is printed with trailing ``\n'' added.
Implemented and Documented.
Andrew V Makarow <makarow at mail.com>
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CGI::Bus::file - file object
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