Make check_licenses about 5x faster.

third_party/devscripts/chromium-1.patch

---- licensecheck.pl.orig        2011-09-12 15:54:33.369133553 -0700
-+++ licensecheck.pl     2011-09-12 16:53:51.189069386 -0700
-@@ -406,7 +406,7 @@
+--- licensecheck.pl.orig        2011-09-22 10:51:25.934402455 -0700
++++ licensecheck.pl     2011-09-22 10:45:54.585545044 -0700
+@@ -277,10 +277,6 @@
+     while (<F>) {
+         last if ($. > $opt_lines);
+         $content .= $_;
+-       $copyright_match = parse_copyright($_);
+-       if ($copyright_match) {
+-           $copyrights{lc("$copyright_match")} = "$copyright_match";
+-       }
+     }
+     close(F);
+ 
+@@ -298,7 +294,6 @@
+ 
+     $license = parselicense($content);
+     print "$file: ";
+-    print "*No copyright* " unless $copyright;
+     print $license . "\n";
+     print "  [Copyright: " . $copyright . "]\n"
+       if $copyright and $opt_copyright;
+@@ -398,15 +393,11 @@
+        $gplver = " (v$1 or later)";
+     }
+ 
+-    if ($licensetext =~ /(?:675 Mass Ave|59 Temple Place|51 Franklin Steet|02139|02111-1307)/i) {
+-       $extrainfo = " (with incorrect FSF address)$extrainfo";
+-    }
+-
+     if ($licensetext =~ /permission (?:is (also granted|given))? to link (the code of )?this program with (any edition of )?(Qt|the Qt library)/i) {
         $extrainfo = " (with Qt exception)$extrainfo"
      }
  
 -    if ($licensetext =~ /(All changes made in this file will be lost|DO NOT (EDIT|delete this file)|Generated by)/i) {
 +    if ($licensetext =~ /(All changes made in this file will be lost|DO NOT (EDIT|delete this file)|Generated (automatically|by|from)|generated.*file)/i) {
         $license = "GENERATED FILE";
      }
  
-@@ -437,7 +437,7 @@
+@@ -414,20 +405,12 @@
+        $license = "LGPL$gplver$extrainfo $license";
+     }
+ 
+-    if ($licensetext =~ /is free software.? you can redistribute it and\/or modify it under the terms of the (GNU Affero General Public License|AGPL)/i) {
+-       $license = "AGPL$gplver$extrainfo $license";
+-    }
+-
+     if ($licensetext =~ /is free software.? you (can|may) redistribute it and\/or modify it under the terms of (?:version [^ ]+ (?:\(?only\)? )?of )?the GNU General Public License/i) {
+        $license = "GPL$gplver$extrainfo $license";
+-    }
+-
+-    if ($licensetext =~ /is distributed under the terms of the GNU General Public License,/
++    } elsif ($licensetext =~ /is distributed under the terms of the GNU General Public License,/
+        and length $gplver) {
+        $license = "GPL$gplver$extrainfo $license";
+-    }
+-
+-    if ($licensetext =~ /is distributed.*terms.*GPL/) {
++    } elsif ($licensetext =~ /is distributed.*terms.*GPL/) {
+        $license = "GPL (unversioned/unknown version) $license";
+     }
+ 
+@@ -437,7 +420,7 @@
         $license = "QPL $license";
      }
  
 -    if ($licensetext =~ /http:\/\/opensource\.org\/licenses\/mit-license\.php/) {
 +    if ($licensetext =~ /opensource\.org\/licenses\/mit-license\.php/) {
         $license = "MIT/X11 (BSD like) $license";
      } elsif ($licensetext =~ /Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files \(the Software\), to deal in the Software/) {
         $license = "MIT/X11 (BSD like) $license";
-@@ -459,6 +459,12 @@
-        }
+@@ -448,15 +431,19 @@
      }
  
-+    if ($licensetext =~ /Use of this source code is governed by a BSD-style license/) {
+     if ($licensetext =~ /THIS SOFTWARE IS PROVIDED .*AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY/) {
+-       if ($licensetext =~ /All advertising materials mentioning features or use of this software must display the following acknowledge?ment.*This product includes software developed by/i) {
++       if ($licensetext =~ /All advertising materials mentioning features or use of this software must display the following/) {
+            $license = "BSD (4 clause) $license";
+-       } elsif ($licensetext =~ /(The name of .*? may not|Neither the names? of .*? nor the names of (its|their) contributors may) be used to endorse or promote products derived from this software/i) {
++       } elsif ($licensetext =~ /be used to endorse or promote products derived from this software/) {
+            $license = "BSD (3 clause) $license";
+-       } elsif ($licensetext =~ /Redistributions of source code must retain the above copyright notice/i) {
++       } elsif ($licensetext =~ /Redistributions of source code must retain the above copyright notice/) {
+            $license = "BSD (2 clause) $license";
+        } else {
+            $license = "BSD $license";
+        }
++    } elsif ($licensetext =~ /Use of this source code is governed by a BSD-style license/) {
 +        $license = "BSD-like $license";
-+    } elsif ($licensetext =~ /BSD terms apply.*see.*COPYING.*for details/) {
++    } elsif ($licensetext =~ /BSD terms apply/) {
 +        $license = "BSD-like $license";
-+    }
-+
+     }
+ 
      if ($licensetext =~ /Mozilla Public License Version ([^ ]+)/) {
-        $license = "MPL (v$1) $license";
-     }
-@@ -495,7 +501,7 @@
+@@ -495,7 +482,7 @@
         $license = "SGI Free Software License B $license";
      }
  
 -    if ($licensetext =~ /is in the public domain/i) {
-+    if ($licensetext =~ /is.*in the public domain|disclaims copyright/i) {
++    if ($licensetext =~ /in the public domain/i) {
         $license = "Public domain";
      }
  
-@@ -503,6 +509,10 @@
+@@ -503,6 +490,10 @@
         $license = "CDDL " . ($1 ? "(v$2) " : '') . $license;
      }
  
 +    if ($licensetext =~ /Microsoft Permissive License \(Ms-PL\)/) {
 +        $license = "Ms-PL $license";
 +    }
 +
      if ($licensetext =~ /Permission is hereby granted, free of charge, to any person or organization obtaining a copy of the software and accompanying documentation covered by this license \(the \"Software\"\)/ or
         $licensetext =~ /Boost Software License([ ,-]+Version ([^ ]+)?(\.))/i) {
         $license = "BSL " . ($1 ? "(v$2) " : '') . $license;
-@@ -515,6 +525,8 @@
+@@ -515,18 +506,8 @@
      if ($licensetext =~ /The origin of this software must not be misrepresented.*Altered source versions must be plainly marked as such.*This notice may not be removed or altered from any source distribution/ or
          $licensetext =~ /see copyright notice in zlib\.h/) {
         $license = "zlib/libpng $license";
+-    }
+-
+-    if ($licensetext =~ /Do What The Fuck You Want To Public License, Version ([^, ]+)/i) {
+-        $license = "WTFPL (v$1)";
+-    }
+-
+-    if ($licensetext =~ /Do what The Fuck You Want To Public License/i) {
+-        $license = "WTFPL";
+-    }
+-
+-    if ($licensetext =~ /(License WTFPL|Under (the|a) WTFPL)/i) {
+-        $license = "WTFPL";
 +    } elsif ($licensetext =~ /This code is released under the libpng license/) {
 +        $license = "libpng $license";
      }
  
-     if ($licensetext =~ /Do What The Fuck You Want To Public License, Version ([^, ]+)/i) {
+     $license = "UNKNOWN" if (!length($license));