Opening and editing text files(c++)
- Drac
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February 2nd, 2004, 10:52 pm
- Anonymous
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February 2nd, 2004, 10:52 pm
- Drac
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February 3rd, 2004, 10:22 pm
Sorry for bump 
, But I really need to know this, any documentation that might lead me in the right direction would be greatly appreciated
, But I really need to know this, any documentation that might lead me in the right direction would be greatly appreciated- RichB
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February 4th, 2004, 1:09 am
Free Programming Resources
- rjmthezonenet
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February 4th, 2004, 8:13 am
- Drac
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February 4th, 2004, 4:05 pm
Hehe, Your not suppose to use a power drill to to tighten glasses? 
Thanks, Ill look into those
.
Thanks, Ill look into those
.- rjmthezonenet
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February 5th, 2004, 8:06 am
Yeah, check out Perl. Let's say you want to replace cat with dog... but, only in the second column of a tab delimited text file, here's an example:
(This is, by the way, my second Perl script. Its not hard to learn).
You would then run the script as scripname filename.tab. You may also take input from comman line re-directs, files, databases, heck... you name it! Output, in this example, goes to the screen. You could re-direct it (>) to a file, blah blah.... you get the picture.
Code: [ Select ]
#/usr/bin/perl -w
# Put before/after in strings
# You can just as easily take them from the command line.
$stringa = "cat";
$stringb = "dog";
# Loop through each line of standard input. Perl is so smart, you
# really don't have to give it much options.
while (<>) {
chomp; # chew off the line endings.
@row = split (/\t/,$_); # split each line into array. use tabs.
$count = 1;
foreach $col (@row) { # loop through each array element
if ($count == 2) { # if 2nd column, do substitution
$col =~ s/$stringa/$stringb/; # switch a for b!!
print "$col\t"; # print out new version
} else {
print "$col\t";
}
$count++;
}
print "\n"; # each line in tab file ends with LF
}
# Put before/after in strings
# You can just as easily take them from the command line.
$stringa = "cat";
$stringb = "dog";
# Loop through each line of standard input. Perl is so smart, you
# really don't have to give it much options.
while (<>) {
chomp; # chew off the line endings.
@row = split (/\t/,$_); # split each line into array. use tabs.
$count = 1;
foreach $col (@row) { # loop through each array element
if ($count == 2) { # if 2nd column, do substitution
$col =~ s/$stringa/$stringb/; # switch a for b!!
print "$col\t"; # print out new version
} else {
print "$col\t";
}
$count++;
}
print "\n"; # each line in tab file ends with LF
}
- #/usr/bin/perl -w
- # Put before/after in strings
- # You can just as easily take them from the command line.
- $stringa = "cat";
- $stringb = "dog";
- # Loop through each line of standard input. Perl is so smart, you
- # really don't have to give it much options.
- while (<>) {
- chomp; # chew off the line endings.
- @row = split (/\t/,$_); # split each line into array. use tabs.
- $count = 1;
- foreach $col (@row) { # loop through each array element
- if ($count == 2) { # if 2nd column, do substitution
- $col =~ s/$stringa/$stringb/; # switch a for b!!
- print "$col\t"; # print out new version
- } else {
- print "$col\t";
- }
- $count++;
- }
- print "\n"; # each line in tab file ends with LF
- }
(This is, by the way, my second Perl script. Its not hard to learn).
You would then run the script as scripname filename.tab. You may also take input from comman line re-directs, files, databases, heck... you name it! Output, in this example, goes to the screen. You could re-direct it (>) to a file, blah blah.... you get the picture.
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