1 /*
   2  * Copyright 1997-2005 Sun Microsystems, Inc.  All Rights Reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  *
  23  */
  24 
  25 # include "incls/_precompiled.incl"
  26 # include "incls/_symbolOop.cpp.incl"
  27 
  28 bool symbolOopDesc::equals(const char* str, int len) const {
  29   int l = utf8_length();
  30   if (l != len) return false;
  31   while (l-- > 0) {
  32     if (str[l] != (char) byte_at(l))
  33       return false;
  34   }
  35   assert(l == -1, "we should be at the beginning");
  36   return true;
  37 }
  38 
  39 char* symbolOopDesc::as_C_string(char* buf, int size) const {
  40   if (size > 0) {
  41     int len = MIN2(size - 1, utf8_length());
  42     for (int i = 0; i < len; i++) {
  43       buf[i] = byte_at(i);
  44     }
  45     buf[len] = '\0';
  46   }
  47   return buf;
  48 }
  49 
  50 char* symbolOopDesc::as_C_string() const {
  51   int len = utf8_length();
  52   char* str = NEW_RESOURCE_ARRAY(char, len + 1);
  53   return as_C_string(str, len + 1);
  54 }
  55 
  56 char* symbolOopDesc::as_C_string_flexible_buffer(Thread* t,
  57                                                  char* buf, int size) const {
  58   char* str;
  59   int len = utf8_length();
  60   int buf_len = len + 1;
  61   if (size < buf_len) {
  62     str = NEW_RESOURCE_ARRAY(char, buf_len);
  63   } else {
  64     str = buf;
  65   }
  66   return as_C_string(str, buf_len);
  67 }
  68 
  69 void symbolOopDesc::print_symbol_on(outputStream* st) {
  70   st = st ? st : tty;
  71   for (int index = 0; index < utf8_length(); index++)
  72     st->put((char)byte_at(index));
  73 }
  74 
  75 jchar* symbolOopDesc::as_unicode(int& length) const {
  76   symbolOopDesc* this_ptr = (symbolOopDesc*)this;
  77   length = UTF8::unicode_length((char*)this_ptr->bytes(), utf8_length());
  78   jchar* result = NEW_RESOURCE_ARRAY(jchar, length);
  79   if (length > 0) {
  80     UTF8::convert_to_unicode((char*)this_ptr->bytes(), result, length);
  81   }
  82   return result;
  83 }
  84 
  85 const char* symbolOopDesc::as_klass_external_name(char* buf, int size) const {
  86   if (size > 0) {
  87     char* str    = as_C_string(buf, size);
  88     int   length = (int)strlen(str);
  89     // Turn all '/'s into '.'s (also for array klasses)
  90     for (int index = 0; index < length; index++) {
  91       if (str[index] == '/') {
  92         str[index] = '.';
  93       }
  94     }
  95     return str;
  96   } else {
  97     return buf;
  98   }
  99 }
 100 
 101 const char* symbolOopDesc::as_klass_external_name() const {
 102   char* str    = as_C_string();
 103   int   length = (int)strlen(str);
 104   // Turn all '/'s into '.'s (also for array klasses)
 105   for (int index = 0; index < length; index++) {
 106     if (str[index] == '/') {
 107       str[index] = '.';
 108     }
 109   }
 110   return str;
 111 }