This commit was manufactured by cvs2svn to create branch 'ruby_1_8'.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@11222 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/digest/bubblebabble/.cvsignore

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+Makefile
+mkmf.log
+*.def
+extconf.h

ext/digest/bubblebabble/bubblebabble.c

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+/************************************************
+
+  bubblebabble.c - BubbleBabble encoding support
+
+  $Author$
+  created at: Fri Oct 13 18:31:42 JST 2006
+
+  Copyright (C) 2006 Akinori MUSHA
+
+  $Id$
+
+************************************************/
+
+#include "ruby.h"
+#include "digest.h"
+
+static ID id_digest;
+
+static VALUE
+bubblebabble_str_new(VALUE str_digest)
+{
+    char *digest;
+    size_t digest_len;
+    VALUE str;
+    char *p;
+    int i, j, seed = 1;
+    static const char vowels[] = {
+        'a', 'e', 'i', 'o', 'u', 'y'
+    };
+    static const char consonants[] = {
+        'b', 'c', 'd', 'f', 'g', 'h', 'k', 'l', 'm', 'n',
+        'p', 'r', 's', 't', 'v', 'z', 'x'
+    };
+
+    StringValue(str_digest);
+    digest = RSTRING_PTR(str_digest);
+    digest_len = RSTRING_LEN(str_digest);
+
+    if ((LONG_MAX - 2) / 3 < (digest_len | 1)) {
+	rb_raise(rb_eRuntimeError, "digest string too long");
+    }
+
+    str = rb_str_new(0, (digest_len | 1) * 3 + 2);
+    p = RSTRING_PTR(str);
+
+    i = j = 0;
+    p[j++] = 'x';
+
+    for (;;) {
+        unsigned char byte1, byte2;
+
+        if (i >= digest_len) {
+            p[j++] = vowels[seed % 6];
+            p[j++] = consonants[16];
+            p[j++] = vowels[seed / 6];
+            break;
+        } 
+
+        byte1 = digest[i++];
+        p[j++] = vowels[(((byte1 >> 6) & 3) + seed) % 6];
+        p[j++] = consonants[(byte1 >> 2) & 15];
+        p[j++] = vowels[((byte1 & 3) + (seed / 6)) % 6];
+
+        if (i >= digest_len) {
+            break;
+        }
+
+        byte2 = digest[i++];
+        p[j++] = consonants[(byte2 >> 4) & 15];
+        p[j++] = '-';
+        p[j++] = consonants[byte2 & 15];
+
+        seed = (seed * 5 + byte1 * 7 + byte2) % 36;
+    }
+
+    p[j] = 'x';
+
+    return str;
+}
+
+/*
+ * call-seq:
+ *     Digest.bubblebabble(string) -> bubblebabble_string
+ *
+ * Returns a BubbleBabble encoded version of a given _string_.
+ */
+static VALUE
+rb_digest_s_bubblebabble(VALUE klass, VALUE str)
+{
+    return bubblebabble_str_new(str);
+}
+
+/*
+ * call-seq:
+ *     Digest::Class.bubblebabble(string, ...) -> hash_string
+ *
+ * Returns the BubbleBabble encoded hash value of a given _string_.
+ */
+static VALUE
+rb_digest_class_s_bubblebabble(int argc, VALUE *argv, VALUE klass)
+{
+    return bubblebabble_str_new(rb_funcall2(klass, id_digest, argc, argv));
+}
+
+/*
+ * call-seq:
+ *     digest_obj.bubblebabble -> hash_string
+ *
+ * Returns the resulting hash value in a Bubblebabble encoded form.
+ */
+static VALUE
+rb_digest_instance_bubblebabble(VALUE self)
+{
+    return bubblebabble_str_new(rb_funcall(self, id_digest, 0));
+}
+
+/*
+ * This module adds some methods to Digest classes to perform
+ * BubbleBabble encoding.
+ */
+void
+Init_bubblebabble(void)
+{
+    VALUE mDigest, mDigest_Instance, cDigest_Class;
+
+    rb_require("digest");
+
+    mDigest = rb_path2class("Digest");
+    mDigest_Instance = rb_path2class("Digest::Instance");
+    cDigest_Class = rb_path2class("Digest::Class");
+
+    /* Digest::bubblebabble() */
+    rb_define_module_function(mDigest, "bubblebabble", rb_digest_s_bubblebabble, 1);
+
+    /* Digest::Class::bubblebabble() */
+    rb_define_singleton_method(cDigest_Class, "bubblebabble", rb_digest_class_s_bubblebabble, -1);
+
+    /* Digest::Instance#bubblebabble() */
+    rb_define_method(mDigest_Instance, "bubblebabble", rb_digest_instance_bubblebabble, 0);
+
+    id_digest = rb_intern("digest");
+}

ext/digest/bubblebabble/depend

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+bubblebabble.o: bubblebabble.c $(srcdir)/../digest.h $(hdrdir)/ruby.h \
+  $(topdir)/config.h $(hdrdir)/defines.h $(hdrdir)/intern.h \
+  $(srcdir)/../defs.h

ext/digest/bubblebabble/extconf.rb

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+require 'mkmf'
+
+$defs << "-DHAVE_CONFIG_H"
+$INCFLAGS << " -I$(srcdir)/.."
+
+create_makefile('digest/bubblebabble')

ext/digest/sha2/lib/digest/sha2.rb

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+#--
+# sha2.rb - defines Digest::SHA2 class which wraps up the SHA256,
+#           SHA384, and SHA512 classes.
+#++
+# Copyright (c) 2006 Akinori MUSHA <knu@iDaemons.org>
+#
+# All rights reserved.  You can redistribute and/or modify it under the same
+# terms as Ruby.
+#
+#   $Id$
+
+require 'digest'
+
+module Digest
+  #
+  # A meta digest provider class for SHA256, SHA384 and SHA512.
+  #
+  class SHA2 < Digest::Class
+    # call-seq:
+    #     Digest::SHA2.new(bitlen = 256) -> digest_obj
+    #
+    # Creates a new SHA2 hash object with a given bit length.
+    def initialize(bitlen = 256)
+      case bitlen
+      when 256
+        @sha2 = Digest::SHA256.new
+      when 384
+        @sha2 = Digest::SHA384.new
+      when 512
+        @sha2 = Digest::SHA512.new
+      else
+        raise ArgumentError, "unsupported bit length: %s" % bitlen.inspect
+      end
+      @bitlen = bitlen
+    end
+
+    # :nodoc:
+    def reset
+      @sha2.reset
+      self
+    end
+
+    # :nodoc:
+    def update(str)
+      @sha2.update(str)
+      self
+    end
+    alias << update
+
+    def finish
+      @sha2.digest!
+    end
+    private :finish
+
+    def block_length
+      @sha2.block_length
+    end
+
+    def digest_length
+      @sha2.digest_length
+    end
+
+    # :nodoc:
+    def initialize_copy(other)
+      @sha2 = other.instance_eval { @sha2.clone }
+    end
+
+    # :nodoc:
+    def inspect
+      "#<%s:%d %s>" % [self.class.name, @bitlen, hexdigest]
+    end
+  end
+end