text: /*
   *  Copyright (c) 2016, The OpenThread Authors.
   *  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. Neither the name of the copyright holder nor the
   *     names of its contributors may be used to endorse or promote products
   *     derived from this software without specific prior written permission.
   *
   *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   *  AND ANY EXPRESS 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 COPYRIGHT HOLDER OR 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.
   */
  
  /**
   * @file
   *   This file implements the top-level interface to diagnostics module.
   */
  
  #include "openthread-core-config.h"
  
  #include <stdio.h>
  #include <stdlib.h>
  #include "utils/parse_cmdline.hpp"
  #include "utils/wrap_string.h"
  
  #include <openthread/diag.h>
  
  #include "diag_process.hpp"
  #include "common/code_utils.hpp"
  
  using namespace ot::Diagnostics;
  
  void otDiagInit(otInstance *aInstance)
  {
      Diag::Init(aInstance);
  }
  
  void otDiagProcessCmd(int aArgCount, char *aArgVector[], char *aOutput, size_t aOutputMaxLen)
  {
      Diag::ProcessCmd(aArgCount, aArgVector, aOutput, aOutputMaxLen);
  }
  
  void otDiagProcessCmdLine(const char *aString, char *aOutput, size_t aOutputMaxLen)
  {
      enum
      {
          kMaxArgs          = OPENTHREAD_CONFIG_DIAG_CMD_LINE_ARGS_MAX,
          kMaxCommandBuffer = OPENTHREAD_CONFIG_DIAG_CMD_LINE_BUFFER_SIZE,
      };
  
      otError error = OT_ERROR_NONE;
      char    buffer[kMaxCommandBuffer];
      char *  argVector[kMaxArgs];
      uint8_t argCount = 0;
  
      VerifyOrExit(strnlen(aString, kMaxCommandBuffer) < kMaxCommandBuffer, error = OT_ERROR_NO_BUFS);
  
      strcpy(buffer, aString);
      error = ot::Utils::CmdLineParser::ParseCmd(buffer, argCount, argVector, kMaxArgs);
  
  exit:
  
      switch (error)
      {
      case OT_ERROR_NONE:
  
          if (argCount >= 1)
          {
              Diag::ProcessCmd(argCount - 1, (argCount == 1) ? NULL : &argVector[1], aOutput, aOutputMaxLen);
          }
          else
          {
              Diag::ProcessCmd(0, NULL, aOutput, aOutputMaxLen);
          }
  
          break;
  
      case OT_ERROR_NO_BUFS:
          snprintf(aOutput, aOutputMaxLen, "failed: command string too long\r\n");
          break;
  
      case OT_ERROR_INVALID_ARGS:
          snprintf(aOutput, aOutputMaxLen, "failed: command string contains too many arguments\r\n");
          break;
  
      default:
          snprintf(aOutput, aOutputMaxLen, "failed to parse command string\r\n");
          break;
      }
  }
  
  bool otDiagIsEnabled(void)
  {
      return Diag::IsEnabled();
  }
  