Beefy Boxes and Bandwidth Generously Provided by pair Networks
There's more than one way to do things
 
PerlMonks  

Re^3: open(): Is there a simple way to map between numeric open modes and "symbol modes"?

by Anonymous Monk
on Feb 08, 2013 at 05:09 UTC ( #1017765=note: print w/ replies, xml ) Need Help??


in reply to Re^2: open(): Is there a simple way to map between numeric open modes and "symbol modes"?
in thread open(): Is there a simple way to map between numeric open modes and "symbol modes"? (solved)

See also FileHandle::Fmode and Fcntl

#!/usr/bin/perl -- use strict; use warnings; use Data::Dump; use Fcntl(); my %mode2symbol = ( #~ Fcntl::F_DUPFD() => '&', Fcntl::O_RDONLY() => '<', Fcntl::O_RDWR() => '+<', Fcntl::O_TRUNC() => '>', Fcntl::O_WRONLY() => '>', Fcntl::O_APPEND() => '>>', Fcntl::O_CREAT() => '>', ); my %name2mode = ( #~ F_DUPFD => Fcntl::F_DUPFD(), O_RDONLY => Fcntl::O_RDONLY(), O_RDWR => Fcntl::O_RDWR(), O_TRUNC => Fcntl::O_TRUNC(), O_WRONLY => Fcntl::O_WRONLY(), O_APPEND => Fcntl::O_APPEND(), O_CREAT => Fcntl::O_CREAT(), ); $mode2symbol{ $name2mode{O_RDWR} | $name2mode{O_APPEND} } = '+>>'; $mode2symbol{ $name2mode{O_RDONLY} | $name2mode{O_APPEND} } = '+>>'; $mode2symbol{ $name2mode{O_WRONLY} | $name2mode{O_APPEND} } = '+>>'; dd \%mode2symbol; dd \%name2mode; __END__ { "0" => "<", "1" => ">", "2" => "+<", "8" => "+>>", "9" => "+>>", "10" => "+>>", "256" => ">", "512" => ">", } { O_APPEND => 8, O_CREAT => 256, O_RDONLY => 0, O_RDWR => 2, O_TRUNC => 512, O_WRONLY => 1, }


Comment on Re^3: open(): Is there a simple way to map between numeric open modes and "symbol modes"?
Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1017765]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others pondering the Monastery: (13)
As of 2015-07-03 13:50 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (53 votes), past polls