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Removing preceeding space

Posted on 2001-07-20
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Last Modified: 2008-02-26
I am trying to find if a certain string is found in a file.
I noticed that when i read from the file and split each line into tokens the token with which i wnat to test the search string is always preceeded with spaces.Hence the pattern matching alwasy fails, is there any function which would remove the whitespaces in a string(like how chomp behaves, removing the new line)
Thank you
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Question by:Amulya
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9 Comments
 

Author Comment

by:Amulya
ID: 6303319
is  it possible to create a pattern matching rule which ignores spaces .
$token1=" value1"
$search="value1"
I tried ($token =~/^$search)
i do not know exactly how many spaces will preceed token1.
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LVL 84

Accepted Solution

by:
ozo earned 25 total points
ID: 6303342
$token =~/$search/
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LVL 3

Assisted Solution

by:interiot
interiot earned 25 total points
ID: 6303385
$token =~ s/^\s*//;


should remove the preceding spaces.
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LVL 8

Expert Comment

by:shlomoy
ID: 6307624
$findme="some text you want to find";
open(IN,$filename) or die "Can't open $filename: $!\n";
$file_content=join '',<IN>;
close(IN);
if ($file_content=~m/$findme/s) {
     # found!
} elsif ($file_content=~m/$findme/si) {
     # found case insensitive
} else {
     #not found!
}
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Expert Comment

by:aravindin2k
ID: 6321213
may be u can say

$word =~ /^(\s|\s+|$search)

by this way u can escape if the space is present like what i mean is that the search will get okay

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LVL 2

Expert Comment

by:hilltop
ID: 6393889
$search =~ s/\n//gs;
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LVL 2

Expert Comment

by:hilltop
ID: 6393915
$search =~ s/\s//gs;
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LVL 1

Expert Comment

by:Moondancer
ID: 6802606
Thanks for returning here, and finalizing one open question.  BUT please update and finalize all the other open questions you have as well.  There are 13 of them.....
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Expert Comment

by:jmcg
ID: 9482509
Nothing has happened on this question in over 12 months.
I will leave a recommendation in the Cleanup topic area that
the answers from ozo and interiot be accepted (25-25 point split).

Please leave any comments here within the next seven days.

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!

jmcg
EE Cleanup Volunteer
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