egghelp/eggheads community

How to find out if the line exists in textfile

2006-06-06T18:59:18-04:00

well, I assume when the script can post a specific line, it probably uses an '[lindex $listoflines [expr {$arg + 1}]]' statement. To check in such a case, a simple

Code:

if {[llength $listoflines] < $arg} {#  no such line} else {#  ok, lets print}

could be used

Statistics: Posted by De Kus — Tue Jun 06, 2006 6:59 pm

How to find out if the line exists in textfile

2006-06-06T17:06:32-04:00

Simple, open the file and use a loop to incr a variabile with the number of lines, then close the file and return the number of lines.

Code:

proc count:lines {file} {  if {![llength $file]} return  set lines 0  set f [open $file r]  while {[gets $f foo]>-1} {     incr lines  }  close $f  return $lines}

Not tested but should work.

Statistics: Posted by caesar — Tue Jun 06, 2006 5:06 pm

How to find out if the line exists in textfile

2006-06-06T14:58:00-04:00

Hello!
I made a script that shows me a line of a textfile. For example with "!showline 2" my bot shows the second line of the file. But how can I find out if this line exists, e.g. if the file only has one line?

Statistics: Posted by darton — Tue Jun 06, 2006 2:58 pm