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From wr...@apache.org
Subject cvs commit: apr/misc/win32 internal.c
Date Mon, 18 Feb 2002 05:26:16 GMT
wrowe       02/02/17 21:26:16

  Added:       misc/win32 internal.c
  Log:
    A new source to hide statics on Win32 that are purely internal.  They
    may be bound to the libapr.lib but not exported, or in the static apr.lib,
    but they are entirely for internal consumption.
  
    This i18n fn is a helper to the startup code I'm hacking for libapr_app,
    the static apr_app, and for apr's forthcoming apr_app_initialize() fn.
  
  Revision  Changes    Path
  1.1                  apr/misc/win32/internal.c
  
  Index: internal.c
  ===================================================================
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2000-2001 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself,
   *    if and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "Apache" and "Apache Software Foundation" must
   *    not be used to endorse or promote products derived from this
   *    software without prior written permission. For written
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache",
   *    nor may "Apache" appear in their name, without prior written
   *    permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   */
  
  #include "apr_private.h"
  
  #include "misc.h"
  
  
  /* This module is the source of -static- helper functions that are
   * entirely internal to apr.  If the fn is exported - it does not
   * belong here.
   *
   * Namespace decoration is still required to protect us from symbol
   * clashes in static linkages.
   */
  
  
  /* Shared by apr_app.c and start.c 
   *
   * An internal apr function to convert an array of strings (either
   * a counted or NULL terminated list, such as an argv[argc] or env[]
   * list respectively) from wide Unicode strings to narrow utf-8 strings.
   * These are allocated from the MSVCRT's _CRT_BLOCK to trick the system
   * into trusting our store.
   */
  int apr_wastrtoastr(char ***retarr, const wchar_t **arr, int args)
  {
      size_t elesize = 0;
      char **newarr;
      char *elements;
      char *ele;
      int arg;
  
      if (args < 0) {
          for (args = 0; arr[args]; ++args)
              ;
      }
  
      newarr = _malloc_dbg((args + 1) * sizeof(char *),
                           _CRT_BLOCK, __FILE__, __LINE__);
  
      for (arg = 0; arg < args; ++arg) {
          newarr[arg] = (void*)(wcslen(arr[arg]) + 1);
          elesize += (size_t)newarr[arg];
      }
  
      /* This is a safe max allocation, we will realloc after
       * processing and return the excess to the free store.
       * 3 ucs bytes hold any single wchar_t value (16 bits)
       * 4 ucs bytes will hold a wchar_t pair value (20 bits)
       */
      elesize = elesize * 3 + 1;
      ele = elements = _malloc_dbg(elesize * sizeof(char), 
                                   _CRT_BLOCK, __FILE__, __LINE__);
  
      for (arg = 0; arg < args; ++arg) {
          size_t len = (size_t)newarr[arg];
          size_t newlen = elesize;
  
          newarr[arg] = ele;
          (void)apr_conv_ucs2_to_utf8(arr[arg], &len,
                                      newarr[arg], &elesize);
  
          newlen -= elesize;
          ele += newlen;
          assert(elesize && (len == 0));
      }
  
      newarr[arg] = NULL;
      *(ele++) = '\0';
  
      /* Return to the free store if the heap realloc is the least bit optimized
       */
      ele = _realloc_dbg(elements, ele - elements, 
                         _CRT_BLOCK, __FILE__, __LINE__);
  
      if (ele != elements) {
          size_t diff = ele - elements;
          for (arg = 0; arg < args; ++arg) {
              newarr[arg] += diff;
          }
      }
  
      *retarr = newarr;
      return args;
  }
  
  
  

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