;# Usage: &look(*FILEHANDLE,$key,$dict,$fold)
-
+#
+# This library is no longer being maintained, and is included for backward
+# compatibility with Perl 4 programs which may require it.
+#
+# In particular, this should not be used as an example of modern Perl
+# programming techniques.
+#
;# Sets file position in FILEHANDLE to be first line greater than or equal
;# (stringwise) to $key. Pass flags for dictionary order and case folding.
sub look {
- local(*FH,$key,$fold) = @_;
+ local(*FH,$key,$dict,$fold) = @_;
local($max,$min,$mid,$_);
local($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
$blksize,$blocks) = stat(FH);
$blksize = 8192 unless $blksize;
$key =~ s/[^\w\s]//g if $dict;
- $key =~ y/A-Z/a-z/ if $fold;
+ $key = lc $key if $fold;
$max = int($size / $blksize);
while ($max - $min > 1) {
$mid = int(($max + $min) / 2);
$_ = <FH>;
chop;
s/[^\w\s]//g if $dict;
- y/A-Z/a-z/ if $fold;
+ $_ = lc $_ if $fold;
if ($_ lt $key) {
$min = $mid;
}
while (<FH>) {
chop;
s/[^\w\s]//g if $dict;
- y/A-Z/a-z/ if $fold;
+ $_ = lc $_ if $fold;
last if $_ ge $key;
$min = tell(FH);
}