Re: globbing with Apple's HFS+
Just wanted to second Kenny's good advice regarding File::Find. It is a
very good tool and will make life a lot easier for you.
Jeremiah
Sun, May 20, 2007 at 01:06:35PM -0400: Kenny Gatdula mangled some bits into
this alignment:
Hi Doug,
I really couldn't tell you if this is a known problem, but, this
seems to be a job for File::Find.
Hope this helps,
Kenny
use File::Find;
use File::Basename;
my @directories_to_search = '/Users/kennyg';
find(\wanted, @directories_to_search);
sub wanted {
my $file = $_;
my $dir = $File::Find::dir;
next unless $file =~ /\.pl/;
my $dirname = basename($dir);
my $filename = fileparse($file,'.pl');
next unless $filename eq $dirname;
print Found $file in $dir\n;
}
On May 19, 2007, at 9:15 PM, Doug McNutt wrote:
The Camel book is a bit scary describing performance of filename
globbing with the *.pl or the glob(*.pl) syntax with or without
use Cwd in the preamble. Portability is declared questionable.
I find that the only thing that works is * within a loop where
each file is tested by hand.
Consider this bit of doggerel. I'm looking for special cases of a
*.pl file that appears where * means the short name of the
enclosing directory. Note especially the last command in the
second while loop. It works not! What happens is that the second
pass through the while() loop begins in the previous directory at
the point where it was cut short after finding the file I want. If
I comment out the last statement, so that all of the files in the
directory are processed, everything works.
my ($trial, $ddd, $lookfor, $error, $nextdir);
@thefolders = ();
@directories = ();
while ($trial = *)
{
if (-d $trial)
{
push @thefolders, $trial;
# print REPORT $trial\n;
}
}
for $ddd (@thefolders)
{
$lookfor = $ddd.pl;
$nextdir = $mybase/$ddd; # $mybase, global, is full path to
initial directory.
$error = chdir $nextdir;
while (*)
{
if ($_ eq $lookfor)
{
push @directories, $ddd;
# print REPORT Added directory $ddd, $lookfor in $ddd\n;
# last; # Fails. while() continues where it left off in
the previous pass
}
}
}
If I try finding *.pl, $lookfor, or glob($lookfor) I get a
real mess with hits from directories that bear no resemblance to
the most recent chdir which returned without error.
Making the second while loop operate within the while looking for
directories is even worse.
I'll probably get around to looking more deeply but there's little
point if someone here knows that it's all a known problem on MacOS
neXt. (10.3.9 here because I need to talk to my SE/30 file
server.) Oh It's perl 5.8.1-RC3.
--
Applescript syntax is like English spelling:
Roughly, though not thoroughly, thought through.
globbing with Apple's HFS+
The Camel book is a bit scary describing performance of filename globbing with
the *.pl or the glob(*.pl) syntax with or without use Cwd in the
preamble. Portability is declared questionable.
I find that the only thing that works is * within a loop where each file is
tested by hand.
Consider this bit of doggerel. I'm looking for special cases of a *.pl file
that appears where * means the short name of the enclosing directory. Note
especially the last command in the second while loop. It works not! What
happens is that the second pass through the while() loop begins in the previous
directory at the point where it was cut short after finding the file I want. If
I comment out the last statement, so that all of the files in the directory are
processed, everything works.
my ($trial, $ddd, $lookfor, $error, $nextdir);
@thefolders = ();
@directories = ();
while ($trial = *)
{
if (-d $trial)
{
push @thefolders, $trial;
# print REPORT $trial\n;
}
}
for $ddd (@thefolders)
{
$lookfor = $ddd.pl;
$nextdir = $mybase/$ddd; # $mybase, global, is full path to initial
directory.
$error = chdir $nextdir;
while (*)
{
if ($_ eq $lookfor)
{
push @directories, $ddd;
# print REPORT Added directory $ddd, $lookfor in $ddd\n;
# last; # Fails. while() continues where it left off in the previous
pass
}
}
}
If I try finding *.pl, $lookfor, or glob($lookfor) I get a real mess with
hits from directories that bear no resemblance to the most recent chdir which
returned without error.
Making the second while loop operate within the while looking for directories
is even worse.
I'll probably get around to looking more deeply but there's little point if
someone here knows that it's all a known problem on MacOS neXt. (10.3.9 here
because I need to talk to my SE/30 file server.) Oh It's perl 5.8.1-RC3.
--
Applescript syntax is like English spelling:
Roughly, though not thoroughly, thought through.
Re: globbing with Apple's HFS+
Hi Doug,
I really couldn't tell you if this is a known problem, but, this
seems to be a job for File::Find.
Hope this helps,
Kenny
use File::Find;
use File::Basename;
my @directories_to_search = '/Users/kennyg';
find(\wanted, @directories_to_search);
sub wanted {
my $file = $_;
my $dir = $File::Find::dir;
next unless $file =~ /\.pl/;
my $dirname = basename($dir);
my $filename = fileparse($file,'.pl');
next unless $filename eq $dirname;
print Found $file in $dir\n;
}
On May 19, 2007, at 9:15 PM, Doug McNutt wrote:
The Camel book is a bit scary describing performance of filename
globbing with the *.pl or the glob(*.pl) syntax with or without
use Cwd in the preamble. Portability is declared questionable.
I find that the only thing that works is * within a loop where
each file is tested by hand.
Consider this bit of doggerel. I'm looking for special cases of a
*.pl file that appears where * means the short name of the
enclosing directory. Note especially the last command in the
second while loop. It works not! What happens is that the second
pass through the while() loop begins in the previous directory at
the point where it was cut short after finding the file I want. If
I comment out the last statement, so that all of the files in the
directory are processed, everything works.
my ($trial, $ddd, $lookfor, $error, $nextdir);
@thefolders = ();
@directories = ();
while ($trial = *)
{
if (-d $trial)
{
push @thefolders, $trial;
# print REPORT $trial\n;
}
}
for $ddd (@thefolders)
{
$lookfor = $ddd.pl;
$nextdir = $mybase/$ddd; # $mybase, global, is full path to
initial directory.
$error = chdir $nextdir;
while (*)
{
if ($_ eq $lookfor)
{
push @directories, $ddd;
# print REPORT Added directory $ddd, $lookfor in $ddd\n;
# last; # Fails. while() continues where it left off in
the previous pass
}
}
}
If I try finding *.pl, $lookfor, or glob($lookfor) I get a
real mess with hits from directories that bear no resemblance to
the most recent chdir which returned without error.
Making the second while loop operate within the while looking for
directories is even worse.
I'll probably get around to looking more deeply but there's little
point if someone here knows that it's all a known problem on MacOS
neXt. (10.3.9 here because I need to talk to my SE/30 file
server.) Oh It's perl 5.8.1-RC3.
--
Applescript syntax is like English spelling:
Roughly, though not thoroughly, thought through.
globbing with Apple's HFS+
The Camel book is a bit scary describing performance of filename globbing with
the *.pl or the glob(*.pl) syntax with or without use Cwd in the
preamble. Portability is declared questionable.
I find that the only thing that works is * within a loop where each file is
tested by hand.
Consider this bit of doggerel. I'm looking for special cases of a *.pl file
that appears where * means the short name of the enclosing directory. Note
especially the last command in the second while loop. It works not! What
happens is that the second pass through the while() loop begins in the previous
directory at the point where it was cut short after finding the file I want. If
I comment out the last statement, so that all of the files in the directory are
processed, everything works.
my ($trial, $ddd, $lookfor, $error, $nextdir);
@thefolders = ();
@directories = ();
while ($trial = *)
{
if (-d $trial)
{
push @thefolders, $trial;
# print REPORT $trial\n;
}
}
for $ddd (@thefolders)
{
$lookfor = $ddd.pl;
$nextdir = $mybase/$ddd; # $mybase, global, is full path to initial
directory.
$error = chdir $nextdir;
while (*)
{
if ($_ eq $lookfor)
{
push @directories, $ddd;
# print REPORT Added directory $ddd, $lookfor in $ddd\n;
# last; # Fails. while() continues where it left off in the previous
pass
}
}
}
If I try finding *.pl, $lookfor, or glob($lookfor) I get a real mess with
hits from directories that bear no resemblance to the most recent chdir which
returned without error.
Making the second while loop operate within the while looking for directories
is even worse.
I'll probably get around to looking more deeply but there's little point if
someone here knows that it's all a known problem on MacOS neXt. (10.3.9 here
because I need to talk to my SE/30 file server.) Oh It's perl 5.8.1-RC3.
--
Applescript syntax is like English spelling:
Roughly, though not thoroughly, thought through.
