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514 mateuszvis 1
/* This file is part of the SvarCOM project and is published under the terms
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 * of the MIT license.
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 *
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 * Copyright (C) 2021 Mateusz Viste
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the "Software"),
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 * to deal in the Software without restriction, including without limitation
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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 * and/or sell copies of the Software, and to permit persons to whom the
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 * Software is furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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 * DEALINGS IN THE SOFTWARE.
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 */
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/*
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 * shift
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 */
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static enum cmd_result cmd_shift(struct cmd_funcparam *p) {
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  char far *batargv = p->rmod->batargv;
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  char far *nextarg;
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  if (cmd_ishlp(p)) {
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    nls_outputnl(16, 0);
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    nls_outputnl(16, 1);
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    outputnl("");
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    outputnl("SHIFT");
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    return(CMD_OK);
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  }
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  /* abort if batargv is empty */
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  if (*batargv == 0) return(CMD_OK);
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  /* find the next argument in batargv */
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  for (nextarg = batargv + 1; *nextarg != 0; nextarg++);
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  nextarg++; /* move ptr past the zero terminator */
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  /* move down batargv so 2nd argument is at the head now */
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  _fmemmove(batargv, nextarg, sizeof(p->rmod->batargv) - (nextarg - batargv));
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  return(CMD_OK);
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}