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#!/usr/bin/perl -w
#
# codes - extract message codes from DeuTex source
# AYM 2005-08-28
#
# This file is copyright Andr Majorel 2005.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of version 2 of the GNU General Public License as published by the
# Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
use strict;
use File::Basename;
use IO::Handle;
sub split_args ($);
sub err (@);
# DeuTex functions that take a message code as argument
my %funcs =
(
'Bug' => { class => 'b', code => 0 },
'Detail' => { class => 'i', code => 0 },
'Info' => { class => 'i', code => 0 },
'LimitedEpilog' => { class => 'w', code => 1 },
'LimitedWarn' => { class => 'w', code => 1 },
'Phase' => { class => 'i', code => 0 },
'ProgError' => { class => 'e', code => 0 },
'Warning' => { class => 'w', code => 0 },
'nf_err' => { class => 'e', code => 0 },
);
# Used to spot duplicates
my %codes;
my $status = 0;
foreach my $pathname (@ARGV)
{
my $path = dirname $pathname;
my $inc = '';
$inc = "-I$path" if length ($path) > 0;
my $pathnameq = $pathname;
$pathnameq =~ s/'/'\''/g;
# Hide errno because the Glibc headers #define it to something hairy.
my $cmd = "sed 's/errno\\([^.]\\)/errno_\\1/g' '$pathnameq'"
. " | gcc -DDeuTex $inc -E - | indent -l9999";
my @canonsrc = `$cmd`;
if (@canonsrc == 0)
{
err "$pathname: an error occurred while running indent(1)";
$status = 1;
next;
}
foreach my $lbuf (@canonsrc)
{
# Function call ?
if ($lbuf =~ /^\s*([_a-zA-Z][_a-zA-Z0-9]*)\s*\((.*)\);\s*$/)
{
next unless exists $funcs{$1};
my $name = $1;
my $args = $2;
my $hash = $funcs{$1};
# Extract the arguments to the function
my @args = split_args $args;
# Extract the message code from the arguments. Any arguments
# before the code are removed (cf. LimitedWarn()).
my $code = splice @args, 0, $hash->{code} + 1;
if ($code !~ s/^"([A-Z][A-Z][0-9][0-9])"$/$1/)
{
err "invalid code \"$code\"";
$status = 1;
next;
}
# Report duplicates
if (exists $codes{$code})
{
err "$pathname: code $code already used in $codes{$code}";
}
else
{
$codes{$code} = $pathname;
}
printf "%s %s %-13s %s\n",
$code, $hash->{class}, $pathname, join ("\t", @args);
}
}
}
exit $status;
#
# split_args - split the arguments of a C function
#
sub split_args ($)
{
my ($string) = @_;
my @args = ('');
my $quote = '';
my $backslash = 0;
my $paren = 0;
for (my $i = 0; $i < length $string; $i++)
{
my $c = substr $string, $i, 1;
if ($quote eq '')
{
if ($c eq "'")
{
$quote = "'";
}
elsif ($c eq '"')
{
$quote = '"';
}
elsif ($c eq '(')
{
$paren++;
}
elsif ($c eq ')')
{
$paren--;
if ($paren < 0)
{
err "extra \")\" in \"$string\"";
exit 1;
}
}
elsif ($c eq ',' && $paren == 0)
{
push @args, '';
$c = '';
}
elsif ($c =~ /^\s$/ && $paren == 0 && length ($args[@args - 1]) == 0)
{
$c = '';
}
}
elsif ($quote eq "'")
{
if ($c eq '\\' && ! $backslash)
{
$backslash = 2;
}
elsif ($c eq "'" && ! $backslash)
{
$quote = '';
}
}
elsif ($quote eq '"')
{
if ($c eq '\\' && ! $backslash)
{
$backslash = 2;
}
elsif ($c eq '"' && ! $backslash)
{
$quote = '';
}
}
else
{
err "internal error, invalid quote";
}
$args[@args - 1] .= $c;
$backslash-- if $backslash > 0;
}
return @args;
}
#
# err - print an error message
#
sub err (@)
{
STDOUT->flush;
print STDERR "codes: ", @_, "\n";
return 1;
}
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