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static unsigned short oldstdout = 0xffff;
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static unsigned short oldstdout = 0xffff;
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/* compute a filename to be used for pipes */
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/* compute a filename to be used for pipes */
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static unsigned short gentmpfile(char *s) {
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static unsigned short gentmpfile(char *s, unsigned short envseg) {
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  unsigned short err = 0;
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  unsigned short err = 0;
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  /* do I have a %temp% path? */
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  /* TODO */
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  unsigned short i;
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  /* do I have a %temp% path? */
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  i = env_lookup_valcopy(s, 116, envseg, "TEMP");
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  if (i > 0) {
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    /* make sure it is terminated by a backslash (required by int 0x21, ah=5a) */
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    if (s[i - 1] != '\\') {
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      s[i++] = '\\';
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      s[i] = 0;
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    }
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  } else {
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  /* if fails, then use truename(\) */
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    /* if fails, then use truename(.\) */
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  if (file_truename(".\\", s) != 0) *s = 0;
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    if (file_truename(".\\", s) != 0) *s = 0;
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  }
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  /* create file */
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  /* create file */
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  _asm {
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  _asm {
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    mov ah, 0x5a
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    mov ah, 0x5a
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    mov dx, s
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    mov dx, s
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/* parse commandline and performs necessary redirections. cmdline is
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/* parse commandline and performs necessary redirections. cmdline is
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 * modified so all redirections are cut out.
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 * modified so all redirections are cut out.
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 * piped commands are moved to awaitingcmd for later execution
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 * piped commands are moved to awaitingcmd for later execution
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 * returns 0 on success, DOS err on failure */
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 * returns 0 on success, DOS err on failure */
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unsigned short redir_parsecmd(struct redir_data *d, char *cmdline, char far *awaitingcmd) {
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unsigned short redir_parsecmd(struct redir_data *d, char *cmdline, char far *awaitingcmd, unsigned short envseg) {
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  unsigned short i;
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  unsigned short i;
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  unsigned short pipescount = 0;
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  unsigned short pipescount = 0;
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  /* NOTES:
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  /* NOTES:
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   *
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   *
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      }
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      }
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      d->stdoutfile = NULL;
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      d->stdoutfile = NULL;
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    }
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    }
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    /* redirect stdin of next command from a temp file (that is used as my output) */
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    /* redirect stdin of next command from a temp file (that is used as my output) */
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    _fstrcat(awaitingcmd, "<");
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    _fstrcat(awaitingcmd, "<");
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    i = gentmpfile(tmpfile);
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    i = gentmpfile(tmpfile, envseg);
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    if (i != 0) return(i);
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    if (i != 0) return(i);
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    _fstrcat(awaitingcmd, tmpfile);
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    _fstrcat(awaitingcmd, tmpfile);
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    /* same file is used as my stdout */
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    /* same file is used as my stdout */
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    d->stdoutfile = tmpfile;
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    d->stdoutfile = tmpfile;
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    d->stdout_openflag = 0x12;
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    d->stdout_openflag = 0x12;
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    /* TODO I need to remember that the tmp file must be removed... */
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/*    outputnl("awaitingcmd:");
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    for (i = 0; awaitingcmd[i] != 0; i++) printf("%c", awaitingcmd[i]);
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    printf("\r\n");*/
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  }
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  }
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  return(0);
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  return(0);
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}
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}
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