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Docs/Support/update-reserved-words.pl

+#!/usr/bin/perl
+
+print STDERR "Scanning lex.h for symbols..\n";
+open LEX, "<../sql/lex.h";
+while($line = <LEX>) {
+  if($line =~ /\{\s+\"([A-Z_]+)\",\s+SYM\(([A-Z_]+)\)/) {
+    $words{$2} = $1;
+  } elsif($line =~ /sql_functions/) {
+    last;
+  };
+};
+close LEX;
+
+print STDERR "Scanning sql_yacc.yy for non-reserved words...\n";
+open YACC, "<../sql/sql_yacc.yy";
+while(<YACC> !~ /^keyword:/) {};
+while(($line = <YACC>) =~ /[\s|]+([A-Z_]+)/) {
+  delete $words{$1};
+};
+close YACC;
+
+
+$list = sprintf("\@c Reserved word list updated %s by %s.\n".
+                "\@c To regenerate, use Support/update-reserved-words.pl.\n\n",
+                &pretty_date, $ENV{USER});
+
+
+print STDERR "Copying reserved words to an array...\n";
+foreach(keys %words) { push @words, $words{$_}; };
+
+print STDERR "Sorting array...\n";
+@words = sort @words;
+
+printf STDERR "There are %i reserved words.\n", scalar @words;
+
+@pre  = ("\@item", "\@tab", " \@tab", "\@tab");
+@post = ("", "\n", "", "\n");
+
+for($i=0; $word = shift(@words); $i++) {
+  $list .= sprintf "%s %-30s %s", $pre[$i%4], "\@code\{$word\}", $post[$i%4];
+}; $list .= "\n";
+
+open OLD, "<manual.texi";
+open NEW, ">manual-tmp.texi";
+
+print STDERR "Copying beginning of manual.texi...\n";
+while(($line = <OLD>) !~ /START_OF_RESERVED_WORDS/) { print NEW $line; };
+print NEW "\@c START_OF_RESERVED_WORDS\n\n";
+print STDERR "Inserting list of reserved words...\n";
+print NEW "\@multitable \@columnfractions .25 .25 .25 .25\n";
+print NEW $list;
+print NEW "\@end multitable\n";
+print STDERR "Skipping over old list...\n";
+while(($line = <OLD>) !~ /END_OF_RESERVED_WORDS/) {};
+print NEW "\n\@c END_OF_RESERVED_WORDS\n";
+print STDERR "Copying end of manual.texi...\n";
+while($line = <OLD>) { print NEW $line; };
+
+close OLD;
+close NEW;
+
+print STDERR "Moving manual-tmp.texi to manual.texi...\n";
+unlink "manual.texi";
+rename "manual-tmp.texi", "manual.texi";
+
+print STDERR "Reserved word list updated successfully!\n";
+
+sub pretty_date {
+  @time = ($time = shift)?((localtime($time))[0..6]):((localtime)[0..6]);
+
+  ($sec, $min, $hour, $mday, $mon, $year, $wday) = @time;
+  $wday = (Sun,Mon,Tue,Wed,Thu,Fri,Sat)[$wday];
+  $mon = (Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec)[$mon];
+  $year += 1900;
+
+  $pretty = sprintf("%s %s %2i %02i:%02i:%02i %i",
+                    $wday, $mon, $mday, $hour, $min, $sec, $year);
+
+  return $pretty;
+};
+