kc3-lang/kc3/libkc3/buf_rw.c

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• Hash : 0cf28edb
  Author : Thomas de Grivel
  Date : 2024-08-01T13:03:08
  

  wip buf read_only

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• libkc3/buf_rw.c

• /* kc3
   * Copyright 2022,2023,2024 kmx.io <contact@kmx.io>
   *
   * Permission is hereby granted to use this software granted the above
   * copyright notice and this permission paragraph are included in all
   * copies and substantial portions of this software.
   *
   * THIS SOFTWARE IS PROVIDED "AS-IS" WITHOUT ANY GUARANTEE OF
   * PURPOSE AND PERFORMANCE. IN NO EVENT WHATSOEVER SHALL THE
   * AUTHOR BE CONSIDERED LIABLE FOR THE USE AND PERFORMANCE OF
   * THIS SOFTWARE.
   */
  #include "assert.h"
  #include "buf.h"
  #include "buf_fd.h"
  #include "buf_rw.h"
  
  void buf_rw_clean (s_buf_rw *buf_rw)
  {
    assert(buf_rw);
    buf_delete(buf_rw->w);
    buf_delete(buf_rw->r);
  }
  
  
  void buf_rw_fd_close (s_buf_rw *buf_rw)
  {
    assert(buf_rw);
    buf_fd_close(buf_rw->r);
    buf_fd_close(buf_rw->w);
  }
  
  s_buf_rw * buf_rw_fd_open (s_buf_rw *buf_rw, s32 fd)
  {
    s_buf_rw tmp = {0};
    assert(buf_rw);
    tmp = *buf_rw;
    if (! buf_fd_open_r(tmp.r, fd))
      return NULL;
    if (! buf_fd_open_w(tmp.w, fd)) {
      buf_fd_close(tmp.r);
      return NULL;
    }
    *buf_rw = tmp;
    return buf_rw;
  }
  
  s_buf_rw * buf_rw_init_alloc (s_buf_rw *buf_rw, uw size)
  {
    s_buf_rw tmp = {0};
    if (! (tmp.r = buf_new_alloc(size)))
      return NULL;
    if (! (tmp.w = buf_new_alloc(size))) {
      buf_delete(tmp.r);
      return NULL;
    }
    *buf_rw = tmp;
    return buf_rw;
  }
  

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