X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=dgit-junk.git;a=blobdiff_plain;f=i18n-diff-auditor;h=d1ae6f1818826d5b1528776ef83debdf2fb66d18;hp=777bf47ededa166703f847d7290a1c839d394727;hb=36d9d13a20e44076e35d08a103004dd0f5e61401;hpb=78ab0ab57128eec1ef2447cdd3e6008230ee5c04

diff --git a/i18n-diff-auditor b/i18n-diff-auditor
index 777bf47..d1ae6f1 100755
--- a/i18n-diff-auditor
+++ b/i18n-diff-auditor
@@ -1,38 +1,172 @@
 #!/usr/bin/perl -w
 use strict;
 use Carp;
+use Data::Dumper;
 
 my @d = <>;
+unshift @d, "# dummy line to make line 1 index 1 in \@d\n";
+
+our $i_last_l_ok = -1;
+our $count_i_last_l_ok;
 
 sub l_ok ($) {
     my ($i) = @_;
+
+    if ($i == $i_last_l_ok) {
+	confess $i if $count_i_last_l_ok++ > 50;
+    } else {
+	$count_i_last_l_ok = 0;
+	$i_last_l_ok = $i;
+    }
+
     return unless $i < @d;
     $_ = $d[$i];
+    #print STDERR "L $i\n";
     1;
 }
 
-sub l ($) { confess unless l_ok $_[0]; };
+sub l ($) {
+    my ($i) = @_;
+    confess $i unless l_ok $i;
+};
 
-our ($ifilehead, $ihunkhead, $ichunk);
+our $perlop_text = <<'END'; # c&p from man perlop
+           left        terms and list operators (leftward)
+           left        ->
+           nonassoc    ++ --
+           right       **
+           right       ! ~ \ and unary + and -
+           left        =~ !~
+           left        * / % x
+           left        + - .
+           left        << >>
+           nonassoc    named unary operators
+           nonassoc    < > <= >= lt gt le ge
+           nonassoc    == != <=> eq ne cmp ~~
+           left        &
+           left        | ^
+           left        &&
+           left        || //
+           nonassoc    ..  ...
+           right       ?:
+           right       = += -= *= etc. goto last next redo dump
+           left        , =>
+           nonassoc    list operators (rightward)
+           right       not
+           left        and
+           left        or xor
+
+           **=    +=    *=    &=    &.=    <<=    &&=
+                  -=    /=    |=    |.=    >>=    ||=
+                  .=    %=    ^=    ^.=           //=
+                        x=
+END
+
+our $perlop_re;
+
+sub prep_perlop () {
+    my @ops;
+    foreach (split /\n/, $perlop_text) {
+	next unless m{\S};
+	s{\s+$}{};
+	s{^\s+}{};
+	s{^(?: left | right | nonassoc ) \s+}{}x;
+	next if m{^terms and list operators};
+	next if m{^named unary};
+	next if m{^list operators};
+	s{ and unary.*}{};
+	s{ etc\. }{ };
+	foreach my $op (split /\s+/) {
+	    next unless length $op;
+	    next if $op =~ m{^\w+$};
+	    $op =~ s/\W/\\$&/g;
+	    push @ops, $op;
+	}
+    }
+    $perlop_re = '(?: '.(join ' | ', @ops).' )';
+    $perlop_re = qr{$perlop_re}x;
+    #print STDERR "$perlop_re\n";
+}
+
+prep_perlop();
+
+our ($ifilehead, $ihunkhead, $ichunkstart, $ichunkend);
 our ($before, $after);
 
+sub semiparse ($) {
+    ($_) = @_;
+    my @o;
+    for (;;) {
+	s{^\s+}{};
+	if (s{^[\$\@\%]?[_0-9a-zA-Z]+}{}) {
+	    push @o, { T => 'ident', L => $& };
+	} elsif (s{^\<\<('?)([A-Z_]+)\1}{}) {
+	    my ($q,$d) = ($1,$2);
+	    push @o, { T => 'heredoc', Q => $q, Delim => $d };
+	    s{^
+                (             .* \n    )
+                ( (?: (?! $d) .* \n )* )
+              }{ $1 } or die "missing end of here doc $d\n";
+	    $o[$#o]{V} = $2;
+	} elsif (s{^ (["'])( (?:  [^\\] | \\ \1  )* )}{}x) {
+	    my ($q,$v) = ($1,$2);
+	    push @o, { T => 'string', Q => $q, V => $v };
+	} elsif (s{^$perlop_re}{}) {
+	    push @o, { T => 'op', L => $& };
+	} elsif (s/[[{(]//) {
+	    push @o, { T => 'bra', L => $& };
+	} elsif (s/[]})]//) {
+	    push @o, { T => 'ket', L => $& };
+	} elsif (!length) {
+	    last;
+	} else {
+	    m{^.{0,10}};
+	    die "cannot tokenise \`$&'";
+	}
+    }
+    return @o;
+}	    
+
+sub analyse_chunk () {
+    die "plain deletion\n" unless defined $after;
+    die "plain insertion\n" unless defined $before;
+    my @before = semiparse $before;
+    my @after = semiparse $after;
+    print Dumper($ichunkstart, $ichunkend, \@before, \@after);
+    flush STDOUT;
+}
+
 for ($ifilehead = 0; l_ok $ifilehead; $ifilehead++) {
     m{^diff} or next;
-    while (l_ok $ifilehead and m{^index|^---|^\Q+++\E}) { }
+    while (l_ok $ifilehead and m{^diff|^index|^---|^\Q+++\E}) { $ifilehead++ }
     $ihunkhead = $ifilehead;
     while (l_ok $ihunkhead) {
-	m{^\@\@} or confess;
-	$ichunk = $ihunkhead + 1;
-	for (;;) {
-	    l_ok $ichunk or last;
-	    
-	while (l_ok $ichunk and 
+	m{^\@\@} or confess "$ihunkhead $_ ?";
+	my $i = $ihunkhead + 1;
+	for (; ; $i++) {
+	    if (!l_ok $i or m{^ } or m{^\@\@}) {
+		if (defined $ichunkstart) {
+		    $ichunkend = $i;
+		    eval { analyse_chunk(); 1; };
+		    if (length $@) {
+			print Dumper($ichunkstart, $ichunkend,
+				     $before, $after,
+				     $@);
+		    }
+		    $ichunkstart = $ichunkend = $before = $after = undef;
+		}
+		l_ok $i or last;
+		m{^\@\@} and last;
+	    } elsif (m{^[-+]}) {
+		my $which = $& eq '-' ? \$before : \$after;
+		$ichunkstart //= $i;
+		$$which //= '';
+		$$which .= $';
+	    } else {
+		confess "$i $_ ?";
+	    }
+	}
+	$ichunkend = $i;
+	$ihunkhead = $i;
     }
-	
-    confess unless m{^\@\@};
-	   
-
-while (<>){
-    if (m/^diff.*/) {
-	my $headline = 
 }