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cd /usr/local/ascii export IO_CONVERSION=NO gunzip < /usr/local/src/perl.tar.gz | pax -r
You may ignore the error message for the first element of the archive (this doesn't look like a tar archive / skipping to next file...), it's only the directory which will be created automatically anyway.
After extracting the archive you copy the whole directory tree to your EBCDIC filesystem. This time you use I/O-conversion:
Because of our problems with the native yacc we used GNU bison to generate a pure (=reentrant) parser for perly.y. So our yacc is really the following script:
-----8<-----/usr/local/bin/yacc-----8<----- #! /usr/bin/sh
# Bison as a reentrant yacc:
# save parameters:
while [[ $# -gt 1 ]]; do
# add flag %pure_parser:
tmpfile=/tmp/bison.$$.y echo %pure_parser > $tmpfile cat $1 >> $tmpfile
# call bison:
echo ``/usr/local/bin/bison --yacc $params $1\t\t\t(Pure Parser)'' /usr/local/bin/bison --yacc $params $tmpfile
rm -f $tmpfile -----8<----------8<-----
We still use the normal yacc for a2p.y though!!! We made a softlink called byacc to distinguish between the two versions:
ln -s /usr/bin/yacc /usr/local/bin/byacc
op/numconvert.......FAILED tests 1409-1440 op/regexp...........FAILED tests 483, 496 op/regexp_noamp.....FAILED tests 483, 496 pragma/overload.....FAILED tests 152-153, 170-171 pragma/warnings.....FAILED tests 14, 82, 129, 155, 192, 205, 207 lib/bigfloat........FAILED tests 351-352, 355 lib/bigfltpm........FAILED tests 354-355, 358 lib/complex.........FAILED tests 267, 487 lib/dumper..........FAILED tests 43, 45 Failed 11/231 test scripts, 95.24% okay. 57/10595 subtests failed, 99.46% okay.
Copy your Perl executable to a BS2000 LLM using bs2cp:
"bs2cp /usr/local/bin/perl 'bs2:perl(perl,l)'"
Now you can start it with the following (SDF) command:
First you get the BS2000 commandline prompt ('*'). Here you may enter your parameters, e.g. "-e 'print "Hello World!\\n";'" (note the double backslash!) or "-w" and the name of your Perl script. Filenames starting with "/" are searched in the Posix filesystem, others are searched in the BS2000 filesystem. You may even use wildcards if you put a "%" in front of your filename (e.g. "-w checkfiles.pl %*.c"). Read your C/C++ manual for additional possibilities of the commandline prompt (look for PARAMETER-PROMPTING).
my $x = 100000.0; my $y = int($x * 1e-5) * 1e5; # '0' my $z = int($x / 1e+5) * 1e5; # '100000' print "\$y is $y and \$z is $z\n"; # $y is 0 and $z is 100000
use Encode; open($f, ">:encoding(ascii)", "test.ascii"); print $f "Hello World!\n"; open($f, ">:encoding(posix-bc)", "test.ebcdic"); print $f "Hello World!\n"; open($f, ">:encoding(latin1)", "test.latin1"); print $f "Hello World!\n"; open($f, ">:encoding(utf8)", "test.utf8"); print $f "Hello World!\n";
to get two files containing ``Hello World!\n'' in ASCII, EBCDIC, ISO Latin-1 (in this example identical to ASCII) respective UTF-EBCDIC (in this example identical to normal EBCDIC). See the documentation of Encode::PerlIO for details.
As the PerlIO layer uses raw IO internally, all this totally ignores the type of your filesystem (ASCII or EBCDIC) and the IO_CONVERSION environment variable. If you want to get the old behavior, that the BS2000 IO functions determine conversion depending on the filesystem PerlIO still is your friend. You use IO_CONVERSION as usual and tell Perl, that it should use the native IO layer:
export IO_CONVERSION=YES export PERLIO=stdio
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This document was podified for the 5.6 release of perl 11 July 2000.