Contributed by Anonymous Monk
on Jan 31, 2000 at 06:13 UTC
Q&A
> files
Description: I have a file I am using on my website, and I want to
go in, at a specified spot, and change|add info to
that spot. Is there an easier way besides writing to
a temp file, then renaming the temp file over the
old file? Thanks Answer: How do you write to the middle of a file?
contributed by devslashneil #!/usr/bin/perl
use Tie::File;
my $filename = 'foo.dat';
tie @array, 'Tie::File', $filename or die "Cannot open $filename\n";
@array[5] = "Hello, World!\n";
| Answer: How do you write to the middle of a file?
contributed by Anonymous Monk Such is the evil of the standard (read UNIX) file model. One solution is as follows:
$flen = -s $file; # file length in bytes
$from = 42; # insertion point
open FILE, '+<the/file.ext' or die "Couldn't open file: $!";
read FILE, $buf, ($flen - $from), $from;
seek FILE, $from, 0;
print FILE 'blahblahblah', $buf;
|
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