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/* This file is part of the SvarCOM project and is published under the terms
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/* 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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 * of the MIT license.
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 *
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 *
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 * Copyright (C) 2021-2023 Mateusz Viste
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 * Copyright (C) 2021-2024 Mateusz Viste
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 *
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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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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 * 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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 * 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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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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}
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}
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/* parses command line the hard way (directly from PSP) */
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/* parses command line the hard way (directly from PSP) */
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static void parse_argv(struct config *cfg) {
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static void parse_argv(struct config *cfg) {
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  const unsigned char *cmdlinelen = (void *)0x80;
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  char *cmdline = (void *)0x81;
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  char *cmdline = (void *)0x81;
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  memset(cfg, 0, sizeof(*cfg));
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  memset(cfg, 0, sizeof(*cfg));
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  /* set a NULL terminator on cmdline */
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  cmdline[*cmdlinelen] = 0;
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  while (*cmdline != 0) {
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  while (*cmdline != 0x0d) {
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    /* skip over any leading spaces */
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    /* skip over any leading spaces */
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    if (*cmdline == ' ') {
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    if (*cmdline == ' ') {
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      cmdline++;
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      cmdline++;
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      continue;
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      continue;
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        /* FALLTHRU */
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        /* FALLTHRU */
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      case 'k': /* /K = execute command and keep running */
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      case 'k': /* /K = execute command and keep running */
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      case 'K':
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      case 'K':
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        cmdline++;
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        cmdline++;
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        cfg->execcmd = cmdline;
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        cfg->execcmd = cmdline;
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        return; /* further arguments are for the executed program, not for me */
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        goto DONE; /* further arguments are for the executed program, not for me */
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      case 'y': /* /Y = execute batch file step-by-step (with /P, /K or /C) */
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      case 'y': /* /Y = execute batch file step-by-step (with /P, /K or /C) */
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      case 'Y':
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      case 'Y':
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        cfg->flags |= FLAG_STEPBYSTEP;
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        cfg->flags |= FLAG_STEPBYSTEP;
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        break;
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        break;
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        break;
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        break;
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    }
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    }
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    /* move to next argument or quit processing if end of cmdline */
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    /* move to next argument or quit processing if end of cmdline */
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    SKIP_TO_NEXT_ARG:
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    SKIP_TO_NEXT_ARG:
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    while ((*cmdline != 0) && (*cmdline != ' ') && (*cmdline != '/')) cmdline++;
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    while ((*cmdline != 0x0d) && (*cmdline != ' ') && (*cmdline != '/')) cmdline++;
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  }
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  }
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  DONE:
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  /* set a nul terminator on cmdline (expected later in the code) */
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  while (*cmdline != 0x0d) cmdline++;
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  *cmdline = 0;
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}
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}
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/* builds the prompt string and displays it. buff is filled with a zero-terminated copy of the prompt. */
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/* builds the prompt string and displays it. buff is filled with a zero-terminated copy of the prompt. */
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static void build_and_display_prompt(char *buff, unsigned short envseg) {
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static void build_and_display_prompt(char *buff, unsigned short envseg) {