Pattern Matching in file with invisible char

[M Pires]

Hi there,

First of all, I am sorry if this is a FAQ. I couldn't find anything in the
PerlDoc, so if I missed something please be kind enough to redirect me to
it!

I am currently working on a Perl script that will parse out values from an
"almost" text file. The reason I say this is because there are "invisible"
chars in the file such as the ASCII SUB char ( 0x1A ). This chars confuse
the <HANDLE> and cause a premature EOF.

Is there a way around this?

Thx a lot!

[Tad McClellan]

M Pires <MIGUEL.PIRES@PORTUGALMAIL.PT> wrote:

> I am currently working on a Perl script that will parse out values from an
> "almost" text file.

Then it is a binary file.

> The reason I say this is because there are "invisible"
> chars in the file such as the ASCII SUB char ( 0x1A ). This chars confuse
> the <HANDLE> and cause a premature EOF.

Since we are concerned with files, it might be helpful to know what
OS is being used, as the operating system is what manages the filesystem.

> Is there a way around this?

perldoc -f binmode


--
Tad McClellan SGML consulting
[email]tadmc@augustmail.com[/email] Perl programming
Fort Worth, Texas

[M Pires]

[email]tadmc@augustmail.com[/email] (Tad McClellan) wrote in message news:<slrnbmectb.4jq.tadmc@magna.augustmail.com>.. .

> > Is there a way around this?

>
>
> perldoc -f binmode

Thank you very much! For reference the OS is W2K but your tip worked
like a charm. It's frustrating when the answer was in front of you all
along...!

[Tad McClellan]

M Pires <MIGUEL.PIRES@PORTUGALMAIL.PT> wrote:

> [email]tadmc@augustmail.com[/email] (Tad McClellan) wrote in message news:<slrnbmectb.4jq.tadmc@magna.augustmail.com>.. .
>

>> > Is there a way around this?

>>
>>
>> perldoc -f binmode

>
> Thank you very much! For reference the OS is W2K but your tip worked
> like a charm. It's frustrating when the answer was in front of you all
> along...!

Often, all it takes is trying a bunch of different search terms.

perldoc -q binary

would have done it for you in this case...


--
Tad McClellan SGML consulting
[email]tadmc@augustmail.com[/email] Perl programming
Fort Worth, Texas

[Bart Lateur]

M Pires wrote:

>I am currently working on a Perl script that will parse out values from an
>"almost" text file. The reason I say this is because there are "invisible"
>chars in the file such as the ASCII SUB char ( 0x1A ). This chars confuse
>the <HANDLE> and cause a premature EOF.

It's not quite premature... On ancient systems (think DOS and earlier)
this was used as a end-of-file marker on text files. That's why
binmode() fixes this.

Don't forget you'll now have to delete unnecessary CR characters (=
"\r") yourself.

--
Bart.