Imported update-copyright; set build-aux in cfg.mk.

6 files changed, 276 insertions, 2 deletions

diff --git a/ChangeLog b/ChangeLog
index 897572f4..56566f66 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2009-09-04  Micah Cowan  <micah@cowan.name>
+
+	* update-copyright: Imported from gnulib.
+	* lib/Makefile.am, m4/gnulib-cache.m4, m4/gnulib-comp.m4: Adjusted
+	for update-copyright.
+	
 2009-09-03  Micah Cowan  <micah@cowan.name>
 
 	* NEWS: Give credit to jff for SSL security fix, call attention to
diff --git a/cfg.mk b/cfg.mk
new file mode 100644
index 00000000..25f7078e
--- /dev/null
+++ b/cfg.mk
@@ -0,0 +1 @@
+build_aux = $(srcdir)
diff --git a/lib/Makefile.am b/lib/Makefile.am
index def51280..880f9c62 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -9,7 +9,7 @@
 # the same distribution terms as the rest of that program.
 #
 # Generated by gnulib-tool.
-# Reproduce by: gnulib-tool --import --dir=. --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=. --no-libtool --macro-prefix=gl alloca c-ctype getopt getpass-gnu maintainer-makefile quote quotearg strcasestr
+# Reproduce by: gnulib-tool --import --dir=. --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=. --no-libtool --macro-prefix=gl alloca c-ctype getopt getpass-gnu maintainer-makefile quote quotearg strcasestr update-copyright
 
 AUTOMAKE_OPTIONS = 1.5 gnits
 
@@ -870,6 +870,13 @@ EXTRA_DIST += unistd.in.h
 
 ## end   gnulib module unistd
 
+## begin gnulib module update-copyright
+
+
+EXTRA_DIST += $(top_srcdir)/./update-copyright
+
+## end   gnulib module update-copyright
+
 ## begin gnulib module useless-if-before-free
 
 
diff --git a/m4/gnulib-cache.m4 b/m4/gnulib-cache.m4
index 3254beb8..fc535a99 100644
--- a/m4/gnulib-cache.m4
+++ b/m4/gnulib-cache.m4
@@ -15,7 +15,7 @@
 
 
 # Specification in the form of a command-line invocation:
-#   gnulib-tool --import --dir=. --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=. --no-libtool --macro-prefix=gl alloca c-ctype getopt getpass-gnu maintainer-makefile quote quotearg strcasestr
+#   gnulib-tool --import --dir=. --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=. --no-libtool --macro-prefix=gl alloca c-ctype getopt getpass-gnu maintainer-makefile quote quotearg strcasestr update-copyright
 
 # Specification in the form of a few gnulib-tool.m4 macro invocations:
 gl_LOCAL_DIR([])
@@ -28,6 +28,7 @@ gl_MODULES([
   quote
   quotearg
   strcasestr
+  update-copyright
 ])
 gl_AVOID([])
 gl_SOURCE_BASE([lib])
diff --git a/m4/gnulib-comp.m4 b/m4/gnulib-comp.m4
index fc3733c4..3cd997c7 100644
--- a/m4/gnulib-comp.m4
+++ b/m4/gnulib-comp.m4
@@ -242,6 +242,7 @@ AC_DEFUN([gltests_LIBSOURCES], [
 # gnulib-tool and may be removed by future gnulib-tool invocations.
 AC_DEFUN([gl_FILE_LIST], [
   build-aux/link-warning.h
+  build-aux/update-copyright
   build-aux/useless-if-before-free
   build-aux/vc-list-files
   lib/alloca.c
diff --git a/update-copyright b/update-copyright
new file mode 100755
index 00000000..bd0dda5d
--- /dev/null
+++ b/update-copyright
@@ -0,0 +1,258 @@
+#!/usr/bin/perl -0777 -pi
+# Update an FSF copyright year list to include the current year.
+
+my $VERSION = '2009-08-14.18:56'; # UTC
+
+# Copyright (C) 2009 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Written by Jim Meyering and Joel E. Denny
+
+# The arguments to this script should be names of files that contain FSF
+# copyright statements to be updated.  For example, you might wish to
+# use the update-copyright target rule in maint.mk from gnulib's
+# maintainer-makefile module.
+#
+# Iff an FSF copyright statement is recognized in a file and the final
+# year is not the current year, then the statement is updated for the
+# new year and it is reformatted to:
+#
+#   1. Fit within 72 columns.
+#   2. Convert 2-digit years to 4-digit years by prepending "19".
+#   3. Expand copyright year intervals.  (See "Environment variables"
+#      below.)
+#
+# A warning is printed for every file for which no FSF copyright
+# statement is recognized.
+#
+# Each file's FSF copyright statement must be formated correctly in
+# order to be recognized.  For example, each of these is fine:
+#
+#   Copyright @copyright{} 1990-2005, 2007-2009 Free Software
+#   Foundation, Inc.
+#
+#   # Copyright (C) 1990-2005, 2007-2009 Free Software
+#   # Foundation, Inc.
+#
+#   /*
+#    * Copyright &copy; 90,2005,2007-2009
+#    * Free Software Foundation, Inc.
+#    */
+#
+# However, the following format is not recognized because the line
+# prefix changes after the first line:
+#
+#   ## Copyright (C) 1990-2005, 2007-2009 Free Software
+#   #  Foundation, Inc.
+#
+# The following copyright statement is not recognized because the
+# copyright holder is not the FSF:
+#
+#   Copyright (C) 1990-2005, 2007-2009 Acme, Inc.
+#
+# However, any correctly formatted FSF copyright statement following
+# either of the previous two copyright statements would be recognized.
+#
+# The exact conditions that a file's FSF copyright statement must meet
+# to be recognized are:
+#
+#   1. It is the first FSF copyright statement that meets all of the
+#      following conditions.  Subsequent FSF copyright statements are
+#      ignored.
+#   2. Its format is "Copyright (C)", then a list of copyright years,
+#      and then the name of the copyright holder, which is "Free
+#      Software Foundation, Inc.".
+#   3. The "(C)" takes one of the following forms or is omitted
+#      entirely:
+#
+#        A. (C)
+#        B. (c)
+#        C. @copyright{}
+#        D. &copy;
+#
+#   4. The "Copyright" appears at the beginning of a line except that it
+#      may be prefixed by any sequence (e.g., a comment) of no more than
+#      5 characters.
+#   5. Iff such a prefix is present, the same prefix appears at the
+#      beginning of each remaining line within the FSF copyright
+#      statement.  There is one exception in order to support C-style
+#      comments: if the first line's prefix contains nothing but
+#      whitespace surrounding a "/*", then the prefix for all subsequent
+#      lines is the same as the first line's prefix except with each of
+#      "/" and possibly "*" replaced by a " ".  The replacement of "*"
+#      by " " is consistent throughout all subsequent lines.
+#   6. Blank lines, even if preceded by the prefix, do not appear
+#      within the FSF copyright statement.
+#   7. Each copyright year is 2 or 4 digits, and years are separated by
+#      commas or dashes.  Whitespace may appear after commas.
+#
+# Environment variables:
+#
+#   1. If UPDATE_COPYRIGHT_FORCE=1, a recognized FSF copyright statement
+#      is reformatted even if it does not need updating for the new
+#      year.  If unset or set to 0, only updated FSF copyright
+#      statements are reformatted.
+#   2. If UPDATE_COPYRIGHT_USE_INTERVALS=1, every series of consecutive
+#      copyright years (such as 90, 1991, 1992-2007, 2008) in a
+#      reformatted FSF copyright statement is collapsed to a single
+#      interval (such as 1990-2008).  If unset or set to 0, all existing
+#      copyright year intervals in a reformatted FSF copyright statement
+#      are expanded instead.
+#   3. For testing purposes, you can set the assumed current year in
+#      UPDATE_COPYRIGHT_YEAR.
+
+use strict;
+use warnings;
+
+my $copyright_re = 'Copyright';
+my $circle_c_re = '(?:\([cC]\)|@copyright{}|&copy;)';
+my $holder = 'Free Software Foundation, Inc.';
+my $prefix_max = 5;
+my $margin = 72;
+my $tab_width = 8;
+
+my $this_year = $ENV{UPDATE_COPYRIGHT_YEAR};
+if (!$this_year || $this_year !~ m/^\d{4}$/)
+  {
+    my ($sec, $min, $hour, $mday, $month, $year) = localtime (time ());
+    $this_year = $year + 1900;
+  }
+
+# Unless the file consistently uses "\r\n" as the EOL, use "\n" instead.
+my $eol = /(?:^|[^\r])\n/ ? "\n" : "\r\n";
+
+my $leading;
+my $prefix;
+my $ws_re;
+my $stmt_re;
+while (/(^|\n)(.{0,$prefix_max})$copyright_re/g)
+  {
+    $leading = "$1$2";
+    $prefix = $2;
+    if ($prefix =~ /^(\s*\/)\*(\s*)$/)
+      {
+        $prefix =~ s,/, ,;
+        my $prefix_ws = $prefix;
+        $prefix_ws =~ s/\*/ /; # Only whitespace.
+        if (/\G(?:[^*\n]|\*[^\/\n])*\*?\n$prefix_ws/)
+          {
+            $prefix = $prefix_ws;
+          }
+      }
+    $ws_re = '[ \t\r\f]'; # \s without \n
+    $ws_re =
+      "(?:$ws_re*(?:$ws_re|\\n" . quotemeta($prefix) . ")$ws_re*)";
+    my $holder_re = $holder;
+    $holder_re =~ s/\s/$ws_re/g;
+    my $stmt_remainder_re =
+      "(?:$ws_re$circle_c_re)?"
+      . "$ws_re(?:(?:\\d\\d)?\\d\\d(?:,$ws_re?|-))*"
+      . "((?:\\d\\d)?\\d\\d)$ws_re$holder_re";
+    if (/\G$stmt_remainder_re/)
+      {
+        $stmt_re =
+          quotemeta($leading) . "($copyright_re$stmt_remainder_re)";
+        last;
+      }
+  }
+if (defined $stmt_re)
+  {
+    /$stmt_re/ or die; # Should never die.
+    my $stmt = $1;
+    my $final_year_orig = $2;
+
+    # Handle two-digit year numbers like "98" and "99".
+    my $final_year = $final_year_orig;
+    $final_year <= 99
+      and $final_year += 1900;
+
+    if ($final_year != $this_year)
+      {
+        # Update the year.
+        $stmt =~ s/$final_year_orig/$final_year, $this_year/;
+      }
+    if ($final_year != $this_year || $ENV{'UPDATE_COPYRIGHT_FORCE'})
+      {
+        # Normalize all whitespace including newline-prefix sequences.
+        $stmt =~ s/$ws_re/ /g;
+
+        # Put spaces after commas.
+        $stmt =~ s/, ?/, /g;
+
+        # Convert 2-digit to 4-digit years.
+        $stmt =~ s/(\b\d\d\b)/19$1/g;
+
+        # Make the use of intervals consistent.
+        if (!$ENV{UPDATE_COPYRIGHT_USE_INTERVALS})
+          {
+            $stmt =~ s/(\d{4})-(\d{4})/join(', ', $1..$2)/eg;
+          }
+        else
+          {
+            $stmt =~
+              s/
+                (\d{4})
+                (?:
+                  (,\ |-)
+                  ((??{
+                    if    ($2 eq '-') { '\d{4}'; }
+                    elsif (!$3)       { $1 + 1;  }
+                    else              { $3 + 1;  }
+                  }))
+                )+
+              /$1-$3/gx;
+          }
+
+        # Format within margin.
+        my $stmt_wrapped;
+        my $text_margin = $margin - length($prefix);
+        if ($prefix =~ /^(\t+)/)
+          {
+            $text_margin -= length($1) * ($tab_width - 1);
+          }
+        while (length $stmt)
+          {
+            if (($stmt =~ s/^(.{1,$text_margin})(?: |$)//)
+                || ($stmt =~ s/^([\S]+)(?: |$)//))
+              {
+                my $line = $1;
+                $stmt_wrapped .= $stmt_wrapped ? "$eol$prefix" : $leading;
+                $stmt_wrapped .= $line;
+              }
+            else
+              {
+                # Should be unreachable, but we don't want an infinite
+                # loop if it can be reached.
+                die;
+              }
+          }
+
+        # Replace the old copyright statement.
+        s/$stmt_re/$stmt_wrapped/;
+      }
+  }
+else
+  {
+    print STDERR "$ARGV: warning: FSF copyright statement not found\n";
+  }
+
+# Local variables:
+# indent-tabs-mode: nil
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "my $VERSION = '"
+# time-stamp-format: "%:y-%02m-%02d.%02H:%02M"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "'; # UTC"
+# End: