Q:
ABSTRACT: PSF for AIX: ASCII to EBCDIC transform -- questions on
modifying and recompiling apka2e or asciinpe
SEARCH ARG: psf/aix
TOPIC THREAD: PRINT
PSF/AIX
..
Before I tell my customer that he has to purchase and install the C
compiler, I want to make sure I've got this right.
The issue is printing with fonts using code pages other than 037/850.
In my case the Hebrew ASCII code page is 856 and the EBCDIC coded font
uses codepage 424. So I think what I have to do is:
1) Edit the /usr/lpp/psf/acif/apka2e.c input user exit and change
the appropriate line to:
iconv_fd = iconv_open( "IBM-424", "IBM-856");
2) Recompile the source.
Questions:
1) Is that it ?
2) Is it true that AIX V4.1 does not include the C compiler and just
to make this one change I'll have to install the compiler ?
3) Could you please run thru the actual compile process (no mention
of how it's done in my new bible "AIX for Users of PSF") ?
4) Can I rename the resulting executable apknew or must the source
file be renamed; what does one do with the Makefile file - I know
it has something to do with the compile process but it's been about
eight years since I attended a course in C.
A:
Let me answer your second question first.
R2) It is true that AIX V4 unbundled a number of products, including
the C compiler. If this is the only reason your customer needs the
compiler, I'd hate for your customer to incur this expense. Perhaps
you can find a local RS/6000 with a C compiler and do the work yourself,
either as an inexpensive services offering or as part of the marketing
effort. (Or perhaps I can help you out this once.)
R1,3,4) Here are the instructions to do what you're asking. The same
approach would work for the asciinpe input record exit for ACIF
(with a different line number for the affected command, of course).
Also, if there's no existing AIX converter for the codepage pairs you
need, or if you're not happy with the existing mapping, you can use
the AIX genxlt command to generate new conversion tables. I've not
included those instructions, but if you're interested, let me know.
**********************************************************************
Here's the info on recompiling the apka2e exit to call a different
iconv conversion pair:
It is straightforward to create your own version of the apka2e exit
to convert from one codepage to another. The apka2e exit uses the AIX
iconv program to do the ASCII-to-EBCDIC translation. You can find a
complete list of the codepage pairs that iconv supports in the
/usr/lib/nls/loc/iconvTable directory. (In AIX V4, the files that
appear will depend on the features you selected at AIX install time.)
Once you determine the appropriate pair for your needs, you basically
copy and modify the apka2e.c source file and recompile it under a new
name.
For example:
1) cd /usr/lpp/psf/acif
2) cp apka2e.c apknew.c
3) vi apknew.c
4) Change line 98 to point to the iconv transforms you wish this
exit to invoke (for example, to convert from ISO8859-1 (ASCII)
to IBM-500 (EBCDIC) you would change line 98 to read:
iconv_fd = iconv_open( "IBM-500", "ISO8859-1" );
5) Save the file.
6) cp Makefile Makefile.bak
7) vi Makefile and edit as follows:
- On line 44 that begins with the word "TARGETS", change this to
TARGETS = apknew
- Replicate the two lines, 48 and 49, that begin with "apka2e:" so
that you have two copies of those lines. On the first set of
those lines, change "apka2e" to "apknew"--twice on the first line
and once on the second line, so that you now have a set of lines
beginning at line 48 that look like:
apknew: apknew.c apkexits.h /usr/include/iconv.h
$(CC) $(CFLAGS) -o $@ apknew.c -e INPEXIT -liconv
apka2e: apka2e.c apkexits.h /usr/include/iconv.h
$(CC) $(CFLAGS) -o $@ apka2e.c -e INPEXIT -liconv
8) Save the file.
9) At the AIX command prompt, type the command "make". That will
recompile all the user exits listed on the TARGETS statement in
the Makefile. You should end up with an "apknew" executable file
in the current directory (/usr/lpp/psf/acif).
10) Copy the "apknew" executable to /usr/lpp/psf/bin.
11) Ensure the permissions are at least 755 (-rwxr-xr-x):
chmod 755 /usr/lpp/psf/bin/apknew
12) Ensure the group is "printq"
chgrp printq /usr/lpp/psf/bin/apknew
13) Run acif/line2afp with your new inpexit=/usr/lpp/psf/bin/apknew.
I hope this helps.
S e a r c h - k e y w o r d s:
AIX ICONV APKA2E ASCIINPE GENXLT EBCDIC INPEXIT PSF psf/6000 psf/aix
infoprint apka2e.c asciinpe.c ascii
WWQA: ITEM: RTA000102511 ITEM: RTA000102511
Dated: 12/1998 Category: XPSF6000
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