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eof.3tcl
Langue: en
Version: 7.5 (ubuntu - 08/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
eof - Check for end of file condition on channelSYNOPSIS
eof channelIdDESCRIPTION
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(3tcl), open(3tcl), close(3tcl), fblocked(3tcl), Tcl_StandardChannels(3tcl)KEYWORDS
channel, end of fileContenus ©2006-2024 Benjamin Poulain
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