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Full Discussion: Perl question regarding [ ]
Top Forums Shell Programming and Scripting Perl question regarding [ ] Post 302124487 by aigles on Sunday 1st of July 2007 10:18:21 AM
Old 07-01-2007
If the line starts with spaces, the split command gives an empty value for the $text[0].

Code:
#!/usr/bin/perl

while(<>)
{
   my $line = $_;
   chop($line);
   (@text) = split(/\s+/,$line);
   print "Line='$line'\n";
   print "\$#text=$#text\n";
   print "\$text[\$#text]]='$text[$#text]'\n";
   foreach (0..$#text) { print "\$text[$_]='$text[$_]'\n"; }
}

Input file:
Code:
something somsething somsething something4 somethingxxxxxxxxxxxxx
          something somsething somsething something4 somethingxxxxxxxxxxxxx

Output:
Code:
Line='something somsething somsething something4 somethingxxxxxxxxxxxxx'
$#text=4
$text[$#text]]='somethingxxxxxxxxxxxxx'
$text[0]='something'
$text[1]='somsething'
$text[2]='somsething'
$text[3]='something4'
$text[4]='somethingxxxxxxxxxxxxx'
Line='          something somsething somsething something4 somethingxxxxxxxxxxxxx'
$#text=5
$text[$#text]]='somethingxxxxxxxxxxxxx'
$text[0]=''
$text[1]='something'
$text[2]='somsething'
$text[3]='somsething'
$text[4]='something4'
$text[5]='somethingxxxxxxxxxxxxx'

 

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LEARN ABOUT OSF1

dxmcstextsetselection

DXmCSTextSetSelection(3X)												 DXmCSTextSetSelection(3X)

NAME

       DXmCSTextSetSelection  - Designates the specified text as the current primary selection by highlighting it in the compound string text wid-
       get.

SYNOPSIS

       void DXmCSTextSetSelection(
	       Widget widget,
	       DXmCXTextPosition first,
	       DXmCXTextPosition last,
	       Time time );

PARAMETERS

       The identifier (widget ID) of the compound string text widget.  A value that represents the position of the first  character  in  the  text
       being  selected.   A  value that represents the position of the last character in the text being selected.  Specifies the time of the event
       that generated the call to the DXmCSTextSetSelection routine.

DESCRIPTION

       The DXmCSTextSetSelection routine designates the specified text as the current primary selection by highlighting it in the compound  string
       text  widget.   Within  the text window, first marks the position of the first character in the text and last marks the last character. The
       field characters start at 0 and increase sequentially.

SEE ALSO

       DXmCreateCSText(3X), DXmCSTextClearSelection(3X), DXmCSTextGetSelection(3X)

															 DXmCSTextSetSelection(3X)
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