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#! /usr/local/bin/perl
use strict;
use Getopt::Long;
use XML::Parser;
(my $progname = $0) =~ s!^.*/!!;
sub usage {
my $errstr = "@_";
while (chomp($errstr)) {}
print <<END;
$progname: $errstr
$progname -- read codes.xml and write codes.hpp and codes.cpp
usage: $progname [options] codes.xml
-c check xml file only
-d check xml file and show diff against old hpp and cpp
END
exit(1);
}
my $opts = {};
opts: {
local $SIG{__WARN__} = \&usage;
GetOptions($opts, qw(c d));
}
@ARGV == 1 or usage("one filename argument expected");
my $filexml = shift;
$filexml =~ /^(.*)\.xml$/ or usage("$filexml does not end in .xml");
my $filehpp = "$1.hpp";
my $filecpp = "$1.cpp";
my $temphpp = "$filehpp-new";
my $tempcpp = "$filecpp-new";
unlink $temphpp, $tempcpp;
open(HPP, ">$temphpp") or die "$temphpp: $!\n";
open(CPP, ">$tempcpp") or die "$tempcpp: $!\n";
my $i2 = " " x 2;
my $i4 = " " x 4;
my $lb = "{";
my $rb = "}";
sub disclaimer {
my $filename = shift;
return <<END;
/*
* $filename -- DO NOT EDIT !!
*
* To create a new version (both *.hpp and *.cpp):
*
* 1) edit $filexml
* 2) perl tools/$progname $filexml
* 3) check all files (*.xml *.hpp *.cpp) into CVS
*
* On RedHat linux requires perl-XML-Parser package.
*/
END
}
my $classname = $filehpp;
$classname =~ s!^.*/!!;
$classname =~ s/\.hpp$//;
sub handle_init {
my($parser) = @_;
my $guard = $filehpp;
$guard =~ s!^.*/!!;
$guard =~ s!([a-z])([A-Z])!${1}_${2}!g;
$guard =~ s!\.!_!g;
$guard = uc($guard);
print HPP "#ifndef $guard\n#define $guard\n\n";
print HPP disclaimer($filehpp), "\n";
print HPP "class $classname $lb\n";
print HPP "${i2}enum Value $lb\n";
print CPP disclaimer($filecpp), "\n";
print CPP "/* included in Ndberror.cpp */\n\n";
}
my %classhash = (
ApplicationError => 1,
NoDataFound => 1,
ConstraintViolation => 1,
SchemaError => 1,
UserDefinedError => 1,
InsufficientSpace => 1,
TemporaryResourceError => 1,
NodeRecoveryError => 1,
OverloadError => 1,
TimeoutExpired => 1,
UnknownResultError => 1,
InternalError => 1,
FunctionNotImplemented => 1,
UnknownErrorCode => 1,
NodeShutdown => 1,
);
my $section = undef;
my %codehash = ();
my %namehash = ();
sub handle_start {
my($parser, $tag, %attr) = @_;
if ($tag eq 'Error') {
return;
}
if ($tag eq 'Section') {
$section = $attr{name};
$section =~ /^\w+$/ or
$parser->xpcroak("invalid or missing section name");
return;
}
if ($tag eq 'Code') {
print HPP ",\n" if %codehash;
print CPP ",\n" if %codehash;
my $name = $attr{name};
my $class = $attr{class};
my $code = $attr{code};
my $message = $attr{message};
$name =~ /^\w+$/ or
$parser->xpcroak("invalid or missing error name '$name'");
$namehash{$name}++ and
$parser->xpcroak("duplicate error name '$name'");
$classhash{$class} or
$parser->xpcroak("invalid or missing error class '$class'");
$code =~ /^\d+$/ or
$parser->xpcroak("invalid or missing error code '$code'");
$codehash{$code}++ and
$parser->xpcroak("duplicate error code '$code'");
$message =~ /\S/ or
$parser->xpcroak("invalid or missing error message '$message'");
$message =~ s/^\s+|\s+$//g;
my $enum = "${section}_${name}";
print HPP "${i4}$enum = $code";
print CPP "${i2}$lb ${classname}::$enum,\n";
print CPP "${i4}NdbError::$class,\n";
print CPP "${i4}\"$message\"\n";
print CPP "${i2}$rb";
return;
}
$parser->xpcroak("unknown tag $tag");
}
sub handle_end {
my($parser, $tag) = @_;
}
sub handle_final {
print HPP "\n" if %codehash;
print HPP "${i2}$rb;\n";
print HPP "$rb;\n\n#endif\n";
print CPP ",\n" if 1;
return 1;
}
my $parser = new XML::Parser(
ParseParamEnt => 1,
Handlers => {
Init => \&handle_init,
Start => \&handle_start,
End => \&handle_end,
Final => \&handle_final,
},
ErrorContext => 0,
);
eval {
$parser->parsefile($filexml);
};
if ($@) {
my $errstr = join("\n", grep(m!\S! && ! m!^\s*at\s!, split(/\n/, $@)));
die "$filexml:\n$errstr\n";
}
close(HPP);
close(CPP);
rename($temphpp, $filehpp);
rename($tempcpp, $filecpp);
1;
# vim:set sw=4:
|
