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eof

Check for end of file condition on channel


  1. eof.9.man


1. eof.9.man

Manpage of eof

eof

Section: Tcl Built-In Commands (n)
Updated: 7.5
Index Return to Main Contents



 

NAME

eof - Check for end of file condition on channel  

SYNOPSIS

eof channelId



 

DESCRIPTION

Returns 1 if an end of file condition occurred during the most recent input operation on channelId (such as gets), 0 otherwise.

ChannelId must be an identifier for an open channel such as a Tcl standard channel (stdin, stdout, or stderr), the return value from an invocation of open or socket, or the result of a channel creation command provided by a Tcl extension.  

EXAMPLES

Read and print out the contents of a file line-by-line:

set f [open somefile.txt]
while {1} {
    set line [gets $f]
    if {[eof $f]} {
        close $f
        break
    }
    puts "Read line: $line"
}

Read and print out the contents of a file by fixed-size records:


set f [open somefile.dat]
fconfigure $f -translation binary
set recordSize 40
while {1} {
    set record [read $f $recordSize]
    if {[eof $f]} {
        close $f
        break
    }
    puts "Read record: $record"
}

 

SEE ALSO

file(n), open(n), close(n), fblocked(n), Tcl_StandardChannels(3)

 

KEYWORDS

channel, end of file


 

Index

NAME
SYNOPSIS
DESCRIPTION
EXAMPLES
SEE ALSO
KEYWORDS

This document was created by man2html using the manual pages.
Time: 17:30:49 GMT, October 23, 2013

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