--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/utilities/utf8.cpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,244 @@
+/*
+ * Copyright 1997-2004 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+# include "incls/_precompiled.incl"
+# include "incls/_utf8.cpp.incl"
+
+// Assume the utf8 string is in legal form and has been
+// checked in the class file parser/format checker.
+char* UTF8::next(const char* str, jchar* value) {
+  unsigned const char *ptr = (const unsigned char *)str;
+  unsigned char ch, ch2, ch3;
+  int length = -1;              /* bad length */
+  jchar result;
+  switch ((ch = ptr[0]) >> 4) {
+    default:
+    result = ch;
+    length = 1;
+    break;
+
+  case 0x8: case 0x9: case 0xA: case 0xB: case 0xF:
+    /* Shouldn't happen. */
+    break;
+
+  case 0xC: case 0xD:
+    /* 110xxxxx  10xxxxxx */
+    if (((ch2 = ptr[1]) & 0xC0) == 0x80) {
+      unsigned char high_five = ch & 0x1F;
+      unsigned char low_six = ch2 & 0x3F;
+      result = (high_five << 6) + low_six;
+      length = 2;
+      break;
+    }
+    break;
+
+  case 0xE:
+    /* 1110xxxx 10xxxxxx 10xxxxxx */
+    if (((ch2 = ptr[1]) & 0xC0) == 0x80) {
+      if (((ch3 = ptr[2]) & 0xC0) == 0x80) {
+        unsigned char high_four = ch & 0x0f;
+        unsigned char mid_six = ch2 & 0x3f;
+        unsigned char low_six = ch3 & 0x3f;
+        result = (((high_four << 6) + mid_six) << 6) + low_six;
+        length = 3;
+      }
+    }
+    break;
+  } /* end of switch */
+
+  if (length <= 0) {
+    *value = ptr[0];    /* default bad result; */
+    return (char*)(ptr + 1); // make progress somehow
+  }
+
+  *value = result;
+
+  // The assert is correct but the .class file is wrong
+  // assert(UNICODE::utf8_size(result) == length, "checking reverse computation");
+  return (char *)(ptr + length);
+}
+
+char* UTF8::next_character(const char* str, jint* value) {
+  unsigned const char *ptr = (const unsigned char *)str;
+  /* See if it's legal supplementary character:
+     11101101 1010xxxx 10xxxxxx 11101101 1011xxxx 10xxxxxx */
+  if (is_supplementary_character(ptr)) {
+    *value = get_supplementary_character(ptr);
+    return (char *)(ptr + 6);
+  }
+  jchar result;
+  char* next_ch = next(str, &result);
+  *value = result;
+  return next_ch;
+}
+
+// Count bytes of the form 10xxxxxx and deduct this count
+// from the total byte count.  The utf8 string must be in
+// legal form which has been verified in the format checker.
+int UTF8::unicode_length(const char* str, int len) {
+  int num_chars = len;
+  for (int i = 0; i < len; i++) {
+    if ((str[i] & 0xC0) == 0x80) {
+      --num_chars;
+    }
+  }
+  return num_chars;
+}
+
+// Count bytes of the utf8 string except those in form
+// 10xxxxxx which only appear in multibyte characters.
+// The utf8 string must be in legal form and has been
+// verified in the format checker.
+int UTF8::unicode_length(const char* str) {
+  int num_chars = 0;
+  for (const char* p = str; *p; p++) {
+    if (((*p) & 0xC0) != 0x80) {
+      num_chars++;
+    }
+  }
+  return num_chars;
+}
+
+// Writes a jchar a utf8 and returns the end
+static u_char* utf8_write(u_char* base, jchar ch) {
+  if ((ch != 0) && (ch <=0x7f)) {
+    base[0] = (u_char) ch;
+    return base + 1;
+  }
+
+  if (ch <= 0x7FF) {
+    /* 11 bits or less. */
+    unsigned char high_five = ch >> 6;
+    unsigned char low_six = ch & 0x3F;
+    base[0] = high_five | 0xC0; /* 110xxxxx */
+    base[1] = low_six | 0x80;   /* 10xxxxxx */
+    return base + 2;
+  }
+  /* possibly full 16 bits. */
+  char high_four = ch >> 12;
+  char mid_six = (ch >> 6) & 0x3F;
+  char low_six = ch & 0x3f;
+  base[0] = high_four | 0xE0; /* 1110xxxx */
+  base[1] = mid_six | 0x80;   /* 10xxxxxx */
+  base[2] = low_six | 0x80;   /* 10xxxxxx */
+  return base + 3;
+}
+
+void UTF8::convert_to_unicode(const char* utf8_str, jchar* unicode_str, int unicode_length) {
+  unsigned char ch;
+  const char *ptr = (const char *)utf8_str;
+  int index = 0;
+
+  /* ASCII case loop optimization */
+  for (; index < unicode_length; index++) {
+    if((ch = ptr[0]) > 0x7F) { break; }
+    unicode_str[index] = ch;
+    ptr = (const char *)(ptr + 1);
+  }
+
+  for (; index < unicode_length; index++) {
+    ptr = UTF8::next(ptr, &unicode_str[index]);
+  }
+}
+
+// Returns NULL if 'c' it not found. This only works as long
+// as 'c' is an ASCII character
+jbyte* UTF8::strrchr(jbyte* base, int length, jbyte c) {
+  assert(length >= 0, "sanity check");
+  assert(c >= 0, "does not work for non-ASCII characters");
+  // Skip backwards in string until 'c' is found or end is reached
+  while(--length >= 0 && base[length] != c);
+  return (length < 0) ? NULL : &base[length];
+}
+
+bool UTF8::equal(jbyte* base1, int length1, jbyte* base2, int length2) {
+  // Length must be the same
+  if (length1 != length2) return false;
+  for (int i = 0; i < length1; i++) {
+    if (base1[i] != base2[i]) return false;
+  }
+  return true;
+}
+
+bool UTF8::is_supplementary_character(const unsigned char* str) {
+  return ((str[0] & 0xFF) == 0xED) && ((str[1] & 0xF0) == 0xA0) && ((str[2] & 0xC0) == 0x80)
+      && ((str[3] & 0xFF) == 0xED) && ((str[4] & 0xF0) == 0xB0) && ((str[5] & 0xC0) == 0x80);
+}
+
+jint UTF8::get_supplementary_character(const unsigned char* str) {
+  return 0x10000 + ((str[1] & 0x0f) << 16) + ((str[2] & 0x3f) << 10)
+                 + ((str[4] & 0x0f) << 6)  + (str[5] & 0x3f);
+}
+
+
+//-------------------------------------------------------------------------------------
+
+
+int UNICODE::utf8_size(jchar c) {
+  if ((0x0001 <= c) && (c <= 0x007F)) return 1;
+  if (c <= 0x07FF) return 2;
+  return 3;
+}
+
+int UNICODE::utf8_length(jchar* base, int length) {
+  int result = 0;
+  for (int index = 0; index < length; index++) {
+    jchar c = base[index];
+    if ((0x0001 <= c) && (c <= 0x007F)) result += 1;
+    else if (c <= 0x07FF) result += 2;
+    else result += 3;
+  }
+  return result;
+}
+
+char* UNICODE::as_utf8(jchar* base, int length) {
+  int utf8_len = utf8_length(base, length);
+  u_char* result = NEW_RESOURCE_ARRAY(u_char, utf8_len + 1);
+  u_char* p = result;
+  for (int index = 0; index < length; index++) {
+    p = utf8_write(p, base[index]);
+  }
+  *p = '\0';
+  assert(p == &result[utf8_len], "length prediction must be correct");
+  return (char*) result;
+}
+
+char* UNICODE::as_utf8(jchar* base, int length, char* buf, int buflen) {
+  u_char* p = (u_char*)buf;
+  u_char* end = (u_char*)buf + buflen;
+  for (int index = 0; index < length; index++) {
+    jchar c = base[index];
+    if (p + utf8_size(c) >= end) break;      // string is truncated
+    p = utf8_write(p, base[index]);
+  }
+  *p = '\0';
+  return buf;
+}
+
+void UNICODE::convert_to_utf8(const jchar* base, int length, char* utf8_buffer) {
+  for(int index = 0; index < length; index++) {
+    utf8_buffer = (char*)utf8_write((u_char*)utf8_buffer, base[index]);
+  }
+  *utf8_buffer = '\0';
+}