xref: /openbsd/gnu/usr.bin/perl/cpan/Encode/bin/ucmlint (revision 3d8817e4) 
1#!/usr/local/bin/perl
2#
3# $Id: ucmlint,v 2.2 2008/03/12 09:51:11 dankogai Exp $
4#
5
6use strict;
7our  $VERSION = do { my @r = (q$Revision: 2.2 $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r };
8
9use Getopt::Std;
10our %Opt;
11getopts("Dehfv", \%Opt);
12
13if ($Opt{e}){
14   eval{ require Encode; };
15   $@ and die "can't load Encode : $@";
16}
17
18$Opt{h} and help();
19@ARGV or help();
20
21sub help{
22    print <<"";
23$0 -[Dehfv] [ucm files ...]
24  -D debug mode on
25  -e test with Encode module also (requires perl 5.7.3 or higher)
26  -h shows this message
27  -f forces roundtrip check even for |[123]
28  -v verbose mode
29
30}
31
32$| = 1;
33my (%Hdr, %U2E, %E2U, %Fallback);
34my $in_charmap = 0;
35my $nerror = 0;
36my $nwarning = 0;
37
38sub nit($;$){
39    my ($msg, $level) = @_;
40    my $lstr;
41    if ($level == 2){
42        $lstr = 'notice';
43    }elsif ($level == 1){
44        $lstr = 'warning'; $nwarning++;
45    }else{
46        $lstr = 'error'; $nerror++;
47    }
48    print "$ARGV:$lstr in line $.: $msg\n";
49}
50
51for $ARGV (@ARGV){
52    open UCM, $ARGV or die "$ARGV:$!";
53    %Hdr = %U2E = %E2U = %Fallback = ();
54    $in_charmap = $nerror = $nwarning = 0;
55    $. = 0;
56    while(<UCM>){
57        chomp;
58        s/\s*#.*$//o; /^$/ and next;
59        if ($_ eq "CHARMAP"){
60            $in_charmap = 1;
61            for my $must (qw/code_set_name mb_cur_min mb_cur_max/){
62                exists $Hdr{$must} or nit "<$must> nonexistent";
63            }
64            $Hdr{mb_cur_min} > $Hdr{mb_cur_max}
65                and nit sprintf("mb_cur_min(%d) > mb_cur_max(%d)",
66                                $Hdr{mb_cur_min},$Hdr{mb_cur_max});
67            $in_charmap = 1;
68            next;
69        }
70        unless ($in_charmap){
71            my($hkey, $hvalue) = /^<(\S+)>\s+[\"\']?([^\"\']+)/o or next;
72            $Opt{D} and warn "$hkey => $hvalue";
73            if ($hkey eq "code_set_name"){ # name check
74                exists $Hdr{code_set_name}
75                    and nit "Duplicate <code_set_name>: $hkey";
76            }
77            if ($hkey eq "code_set_alias"){ # alias check
78                $hvalue eq $Hdr{code_set_name}
79                    and nit qq(alias "$hvalue" is already in <code_set_name>);
80            }
81            $Hdr{$hkey} = $hvalue;
82        }else{
83            my $name = $Hdr{code_set_name};
84            my($unistr, $encstr, $fb) = /^(\S+)\s+(\S+)\s(\S+)/o or next;
85            $Opt{v} and nit $_, 2;
86            my $uni = uniparse($unistr);
87            my $enc = encparse($encstr);
88            $fb =~ /^\|([0123])$/ or nit "malformed fallback: $fb";
89            $fb = $1;
90            $Opt{f} and $fb = 0;
91            unless ($fb == 3){ # check uni -> enc
92                if (exists $U2E{$uni}){
93                    nit "dupe encode map: U$uni => $U2E{$uni} and $enc", 1;
94                }else{
95                    $U2E{$uni} = $enc;
96                    $Fallback{$uni}{$enc} = 1 if $fb == 1;
97                    if ($Opt{e}) {
98                        my $e = hex2enc($enc);
99                        my $u = hex2uni($uni);
100                        my $eu = Encode::encode($name, $u);
101                        $e eq $eu
102                            or nit qq(encode('$name', $uni) != $enc);
103                    }
104                }
105            }
106            unless ($fb == 1){  # check enc -> uni
107                if (exists $E2U{$enc}){
108                    nit "dupe decode map: $enc => U$E2U{$enc} and U$uni", 1;
109                }else{
110                    $E2U{$enc} = $uni;
111                    $Fallback{$enc}{$uni} = 1 if $fb == 3;
112                    if ($Opt{e}) {
113                        my $e = hex2enc($enc);
114                        my $u = hex2uni($uni);
115                        $Opt{D} and warn "$uni, $enc";
116                        my $de = Encode::decode($name, $e);
117                        $de eq $u
118                            or nit qq(decode('$name', $enc) != $uni);
119                    }
120                }
121            }
122            # warn "$uni, $enc, $fb";
123        }
124    }
125    $in_charmap or nit "Where is CHARMAP?";
126    checkRT();
127    printf ("$ARGV: %s error%s found\n",
128            ($nerror == 0 ? 'no' : $nerror),
129            ($nerror > 1 ? 's' : ''));
130}
131
132exit;
133
134sub hex2enc{
135    pack("C*", map {hex($_)} split(",", shift));
136}
137sub hex2uni{
138    join("", map { chr(hex($_)) } split(",", shift));
139}
140
141sub checkRT{
142    for my $uni (keys %E2U){
143        my $enc = $U2E{$uni} or next; # okay
144        $E2U{$U2E{$uni}} eq $uni or $Fallback{$uni}{$enc} or
145            nit "RT failure: U$uni => $enc =>U$E2U{$U2E{$uni}}";
146    }
147    for my $enc (keys %E2U){
148        my $uni = $E2U{$enc} or next; # okay
149        $U2E{$E2U{$enc}} eq $enc or $Fallback{$enc}{$uni} or
150            nit "RT failure: $enc => U$uni => $U2E{$E2U{$enc}}";
151    }
152}
153
154
155sub uniparse{
156    my $str = shift;
157    my @u;
158    push @u, $1 while($str =~ /\G<U(.*?)>/ig);
159    for my $u (@u){
160        $u =~ /^([0-9A-Za-z]+)$/o
161            or nit "malformed Unicode character: $u";
162    }
163    return join(',', @u);
164}
165
166sub encparse{
167    my $str = shift;
168    my @e;
169    for my $e (split /\\x/io, $str){
170        $e or next; # first \x
171        $e =~ /^([0-9A-Za-z]{1,2})$/io
172            or nit "Hex $e in $str is bogus";
173        push @e, $1;
174    }
175    return join(',', @e);
176}
177
178
179
180__END__
181
182A UCM file looks like this.
183
184  #
185  # Comments
186  #
187  <code_set_name> "US-ascii" # Required
188  <code_set_alias> "ascii"   # Optional
189  <mb_cur_min> 1             # Required; usually 1
190  <mb_cur_max> 1             # Max. # of bytes/char
191  <subchar> \x3F             # Substitution char
192  #
193  CHARMAP
194  <U0000> \x00 |0 # <control>
195  <U0001> \x01 |0 # <control>
196  <U0002> \x02 |0 # <control>
197  ....
198  <U007C> \x7C |0 # VERTICAL LINE
199  <U007D> \x7D |0 # RIGHT CURLY BRACKET
200  <U007E> \x7E |0 # TILDE
201  <U007F> \x7F |0 # <control>
202  END CHARMAP
203
204