Testing for EOF in file with binary data

[David Warner]

Greetings!

I am working on a C app that needs to read print files generated by lp
that contain HP LaserJet PCL codes. If the PCL contains binary data to
define a bit map to be printed on the page, either icon or soft-font
download, the EOF test ends prematurely and does not read the entire
file. How do I get around testing for EOF and not detect the EOF value
within the file? Am I missing something?

More Data:

If the print file just contains text data or does not have a bit map
value, the print file is read correctly.

Suggestions?

Thanks in advance!

David Warner
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[dan2online]

Richard Bos wrote:

David Warner <da******@westb ase.com> wrote:

I am working on a C app that needs to read print files generated by lp
that contain HP LaserJet PCL codes. If the PCL contains binary data to
define a bit map to be printed on the page, either icon or soft-font
download, the EOF test ends prematurely and does not read the entire
file. How do I get around testing for EOF and not detect the EOF value
within the file?

fopen() it in binary rather than text mode.

No.
FILE *fopen(const char *filename, const char *mode);
if the mode including 'b', it is in binary mode. Otherwise in text
mode.

[Flash Gordon]

David Warner wrote:

Greetings!

I am working on a C app that needs to read print files generated by lp
If you are writing in C then you should not post to comp.lang.c++, C++
is a different language. If you are programming in C++ you should not
have posted to comp.lang.c. Cross-posting to both is rarely the correct
thing to do.
that contain HP LaserJet PCL codes. If the PCL contains binary data to
define a bit map to be printed on the page, either icon or soft-font
download, the EOF test ends prematurely and does not read the entire
file. How do I get around testing for EOF and not detect the EOF value
within the file? Am I missing something?

<snip>

Open the file in binary mode rather than text mode.
--
Flash Gordon, living in interesting times.
Web site - http://home.flash-gordon.me.uk/
comp.lang.c posting guidelines and intro:
http://clc-wiki.net/wiki/Intro_to_clc
--
comp.lang.c.mod erated - moderation address: cl**@plethora.n et -- you must
have an appropriate newsgroups line in your header for your mail to be seen,
or the newsgroup name in square brackets in the subject line. Sorry.

[Flash Gordon]

David Warner wrote:

Greetings!

I am working on a C app that needs to read print files generated by lp
If you are writing in C then you should not post to comp.lang.c++, C++
is a different language. If you are programming in C++ you should not
have posted to comp.lang.c. Cross-posting to both is rarely the correct
thing to do.
that contain HP LaserJet PCL codes. If the PCL contains binary data to
define a bit map to be printed on the page, either icon or soft-font
download, the EOF test ends prematurely and does not read the entire
file. How do I get around testing for EOF and not detect the EOF value
within the file? Am I missing something?

<snip>

Open the file in binary mode rather than text mode.
--
Flash Gordon, living in interesting times.
Web site - http://home.flash-gordon.me.uk/
comp.lang.c posting guidelines and intro:
http://clc-wiki.net/wiki/Intro_to_clc

Inviato da X-Privat.Org - Registrazione gratuita http://www.x-privat.org/join.php
--
comp.lang.c.mod erated - moderation address: cl**@plethora.n et -- you must
have an appropriate newsgroups line in your header for your mail to be seen,
or the newsgroup name in square brackets in the subject line. Sorry.