scanner: restore a missing start condition

[bison.git] / build-aux / cross-options.pl

diff --git a/build-aux/cross-options.pl b/build-aux/cross-options.pl
index 31733e72d3fdb6ff471d41144546d7f3eab86ea1..7762e276c27d60cf3e985136f062a7d0930be093 100755 (executable)
--- a/build-aux/cross-options.pl
+++ b/build-aux/cross-options.pl
@@ -5,33 +5,75 @@ use 5.005;
 use strict;
 
 my %option;
-while (<>)
+my %directive;
+my $scanner = `grep -i '"%[a-z]' $ARGV[0]`;
+$scanner =~ s/"\[-_\]"/-/g;
+while (<STDIN>)
 {
-    if (/^\s*          # Initial spaces.
-        (?:(-\w),\s+)? # $1: Possible short option.
-        (--[-\w]+)     # $2: Long option.
-        (\[?)          # $3: '[' iff the argument is optional.
-        (?:=([-\w]+))? # $4: Possible argument name.
+    if (/^\s*             # Initial spaces.
+        (?:(-\w),\s+)?    # $1: $short: Possible short option.
+        (--[-\w]+)        # $2: $long:  Long option.
+        (\[?)             # $3: $opt:   '[' iff the argument is optional.
+        (?:=(\S+))?       # $4: $arg:   Possible argument name.
+        \s                # Spaces.
         /x)
     {
        my ($short, $long, $opt, $arg) = ($1, $2, $3, $4);
-       $short = defined $short ? '@option{' . $short . '}' : '';
-       if ($arg)
+       $short = '' if ! defined $short;
+       $short = '-d' if $long eq '--defines' && ! $short;
+       my $dir = '%' . substr($long, 2);
+       if (index ($scanner, "\"$dir\"") < 0)
        {
-           $arg =~ s/^=//;
-           $arg = '@var{' . lc ($arg) . '}';
-           $arg = '[' . $arg . ']'
-               if $opt eq '[';
-           $option{"$long=$arg"} = $short ? "$short $arg" : '';
+         if ($long eq '--force-define') { $dir = '%define'; }
+         else { $dir = ''; }
        }
-       else
+       if ($arg)
        {
-           $option{"$long"} = "$short";
+            # if $opt, $arg contains the closing ].
+            substr ($arg, -1) = ''
+                if $opt eq '[';
+           $arg =~ s/^=//;
+            $arg = lc ($arg);
+           my $dir_arg = $arg;
+            # If the argument is compite (e.g., for --define[=NAME[=VALUE]]),
+            # put each word in @var, to build @var{name}[=@var{value}], not
+            # @var{name[=value]}].
+           $arg =~ s/(\w+)/\@var{$1}/g;
+           my $long_arg = "=$arg";
+           if ($opt eq '[') {
+             $long_arg = "[$long_arg]";
+             $arg = "[$arg]";
+           }
+           # For arguments of directives: this only works if all arguments
+           # are strings and have the same syntax as on the command line.
+           if ($dir_arg eq 'name[=value]')
+           {
+               $dir_arg = '@var{name} ["@var{value}"]';
+           }
+           else
+           {
+               $dir_arg =~ s/(\w+)/\@var{"$1"}/g;
+               $dir_arg = '[' . $dir_arg . ']'
+                   if $opt eq '[';
+           }
+           $long = "$long$long_arg";
+           $short = "$short $arg" if $short && $short ne '-d';
+           $dir = "$dir $dir_arg" if $dir;
        }
+       $option{$long} = $short;
+       $directive{$long} = $dir;
     }
 }
 
+my $sep = '';
 foreach my $long (sort keys %option)
 {
-    printf "\@item %-40s \@tab %s\n", '@option{' . $long . '}', $option{$long};
+    # Avoid trailing spaces.
+    print $sep;
+    $sep = "\n";
+    print '@item @option{', $long, "}\n\@tab";
+    print ' @option{', $option{$long}, '}' if $option{$long};
+    print "\n\@tab";
+    print ' @code{', $directive{$long}, '}' if $directive{$long};
+    print "\n";
 }