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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 ULTRIX

dwtstextreplace

DwtSTextReplace(3Dwt)													     DwtSTextReplace(3Dwt)

Name
       DwtSTextReplace - Replaces a portion of the current text string in the simple text widget or inserts a new substring in the text.

Syntax
       void DwtSTextReplace(widget, from_pos, to_pos, value)
	    Widget widget;
	    int from_pos, to_pos;
	    DwtCompString value;

Arguments
       widget	 Specifies the ID of the simple text widget whose text string you want to replace.

       from_pos  Specifies the beginning character position within the text string marking the text being replaced.

       to_pos	 Specifies the last character position within the text string marking the text being replaced.

       value	 Specifies the text to replace part of the current text in the simple text widget.

Description
       The  DwtSTextReplace  function  replaces  part of the text string in the simple text widget.  Within the window, the positions are numbered
       starting from 0 and increasing sequentially.  For example, to replace the second and third characters in the string, from_pos should  be  1
       and to_pos should be 3.	To insert a string after the fourth character, from_pos and to_pos should both be 4.

See Also
       DwtSText(3Dwt),  DwtSTextGetString(3Dwt),  DwtSTextGetEditable(3Dwt),  DwtSTextSetEditable(3Dwt), DwtSTextGetMaxLength(3Dwt), DwtS-
       TextSetMaxLength(3Dwt), DwtSTextSetSelection(3Dwt), DwtSTextClearSelection(3Dwt), DwtSTextGetSelection(3Dwt)
       Guide to the XUI Toolkit: C Language Binding
       Guide to the XUI Toolkit Intrinsics: C Language Binding

															     DwtSTextReplace(3Dwt)
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