dvi2tty.c

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} /* getpages */



/*
 * PLCNXT -- Place page-nr next in list.
 */

void plcnxt(int pagnr)
{

    currentpage = lastpage;
    currentpage->pag = pagnr;
    lastpage = (printlisttype *) malloc(sizeof(printlisttype));
    lastpage->all = FALSE;
    lastpage->nxt = nil;
    lastpage->pag = 0;
    currentpage->nxt = lastpage;

    return;

} /* plcnxt */



/*
 * GETFNAME -- Make sure we have a .dvi filename.
 *
 * Take filename given by command line as is. kjl/23sep2000
 */

void getfname(char *str)
{
/*
    int   i;

    i = strlen(str);
    if (i == 0)
        usage(ign);
    strcpy(DVIfilename, str);
    if ((i < 5) || strcmp(str+i-4, ".dvi"))
        strcat(DVIfilename, ".dvi");
 */

    if (!str)
        usage(ign);
    strcpy(DVIfilename, str);

    return;

} /* getfname */




/*
 * GETINTEGER -- Convert ascii to an integer. I'm sure there is a library
 *               call for it.
 */

int getinteger(int *dest, int *j, char *str)
{
    int  cum;
    int  sgn;
    char ch;

    ch = str[*j];
    if (ch == '-') {
        sgn = -1;
        ch  = str[++(*j)];
    }
    else
        sgn = 1;

    if ((ch >= '0') && (ch <= '9')) {
        cum = 0;
        while ((ch >= '0') && (ch <= '9')) {
            cum = cum*10 + ch - '0';
            ch = str[++(*j)];
        }
        *dest = sgn * cum;

        return 0;                   /* return ok */
    }

    return 1;                       /* return error */

}   /* getinteger */



/*
 * GETLONG -- Convert ascii to a long. I'm sure there is a library
 *            call for it.
 */

int getlong(long *dest, int *j, char *str)
{
    long  cum;
    int  sgn;
    char ch;

    ch = str[*j];
    if (ch == '-') {
        sgn = -1;
        ch  = str[++(*j)];
    }
    else
        sgn = 1;

    if ((ch >= '0') && (ch <= '9')) {
        cum = 0;
        while ((ch >= '0') && (ch <= '9')) {
            cum = cum*10L + ch - '0';
            ch = str[++(*j)];
        }
        *dest = (long) sgn * cum;

        return 0;                   /* return ok */
    }

    return 1;                       /* return error */

}   /* getinteger */



/*
 * ERROREXIT -- Exit program with an erro message.
 */

void errorexit(int errorcode)
{

    fprintf(stderr, "%s: ", progname);
    switch (errorcode) {
        case  illop : fprintf(stderr, "Illegal op-code found: %d\n", opcode);
                      break;
        case  stkof : fprintf(stderr, "Stack overflow\n");
                      break;
        case  stkuf : fprintf(stderr, "Stack underflow\n");
                      break;
        case  stkrq : fprintf(stderr, "Cannot create dvi stack\n");
                      break;
        case  lnerq : fprintf(stderr, "Cannot allocate memory\n");
                      break;
        case  badid : fprintf(stderr, "Id-byte is not correct: %d\n ", opcode);
                      break;
        case  bdsgn : fprintf(stderr, "Bad signature: %d (not 223)\n",
                                      (int) foo);
                      break;
        case  fwsgn : fprintf(stderr, "%d signature bytes (min. 4)\n",
                                      (int) foo);
                      break;
        case  nopre : fprintf(stderr, "Missing preamble\n");
                      break;
        case  nobop : fprintf(stderr, "Missing beginning-of-page command\n");
                      break;
        case  nopp  : fprintf(stderr, "Missing post-post command\n");
                      break;
        case  bdpre : fprintf(stderr, "Preamble occured inside a page\n");
                      break;
        case  bdbop : fprintf(stderr, "BOP-command occured inside a page\n");
                      break;
        case  bdpst : fprintf(stderr, "Postamble occured before end-of-page\n");
                      break;
        case  bdpp  : fprintf(stderr, "Postpost occured before post-command\n");
                      break;
        case  nopst : fprintf(stderr, "Missing postamble\n");
                      break;
        case  illch : fprintf(stderr, "Character code out of range, 0..127\n");
                      break;
        case  filop : fprintf(stderr, "Cannot open dvifile\n");
                      break;
        case  filcr : fprintf(stderr, "Cannot create outfile\n");
                      break;
#if !defined(MSDOS) && !defined(VMS) && !defined(THINK_C) && !defined(AMIGA)
        case  pipcr : fprintf(stderr, "Cannot create pipe to pager\n");
                      break;
#endif
        default     : fprintf(stderr, "Unkown error code\n");
                      break;
    };
    if (outputtofile)
#if defined(VMS)
        remove(OUTfilename);
#else
        unlink(OUTfilename);
#endif

    exit(errorcode);

}  /* errorexit */



/*
 * USAGE -- Print the usage info. Also print a warning/error message
 *          if needed.
 */

void usage(int uerr)
{

    fprintf(stderr, "%s", Copyright);

    if (uerr != ign) {
        fprintf(stderr,"%s: ", progname);
        switch (uerr) {
            case   wrnge  : fprintf(stderr, "width arg out of range:16-%d",
                                            MAXTERMWIDTH);
                            break;
            case   nan    : fprintf(stderr,
                                    "numeric argument expected for option %c",
                                            optch);
                            break;
            case   gae    : fprintf(stderr, "garbage in argument for option %c",
                                            optch);
                            break;
            case   bdlst  : fprintf(stderr, "mal-formed list of pagenumbers");
                            break;
            case   onef   : fprintf(stderr, "only one infile argument allowed");
                            break;
            case   noarg  : fprintf(stderr,
                                    "option argument expected for option %c",
                                            optch);
                            break;
            case   bdopt  : fprintf(stderr, "bad option %c", optch);
                            break;
            case   onepp  : fprintf(stderr, "only one pagelist allowed");
                            break;
#if defined(THINK_C)
            case   nored  : fprintf(stderr, "\nIf no input file is given in\
 command string,\n\Standard Input must be redirected with the radio button.");
                            break;
#endif
            default       : fprintf(stderr, "unknown usage error");
                            break;
        }
        fprintf(stderr, "\n");
    }

    fprintf(stderr, "\n%s\n\n", dvi2tty);
#if defined(THINK_C)
    fprintf(stderr, "Usage: %s [ options ] [<dvi-file>[.dvi]]\n", progname);
    fprintf(stderr, "Read input from <dvi-file>, else read from Standard Input,\
\nwhich must be redirected by means of the radio button.\n");
#else
    fprintf(stderr, "Usage: %s [ options ] <dvi-file>[.dvi]\n", progname);
#endif
    fprintf(stderr, "Options are:\n");
    fprintf(stderr,
            " -ofile   Write output to file, else write to stdout.\n");
    fprintf(stderr,
            " -plist   Print pages whose TeX-page-number are in list.\n");
    fprintf(stderr,
            " -Plist   Print pages whose sequential number are in list.\n");
    fprintf(stderr,
            " -wn      Print the lines with width n characters, default 80.\n");
    fprintf(stderr,
            " -vn      Use n for vertical line height, default 450000.\n");
    fprintf(stderr,
            " -evalue  Add/Substract this value for spacing (-20..20)\n");
#if !defined(MSDOS) && !defined(VMS) && !defined(THINK_C) && !defined(AMIGA)
    fprintf(stderr, " -f       Try to pipe to a pager if output is a tty");
    if (WANTPAGER)
        fprintf(stderr, " (default).\n");
    else
        fprintf(stderr, ".\n");
    fprintf(stderr, " -q       Don't try to pipe to a pager");
    if (WANTPAGER)
        fprintf(stderr, ".\n");
    else
        fprintf(stderr, " (default).\n");
    fprintf(stderr, " -Fprog   Pipe output to pager prog.\n");
#endif
    fprintf(stderr,
            " -a       Remove accents grave etc. from output: \\'{e} -> e.\n");
    fprintf(stderr,
            " -t       Assuming that document was made with tt fonts\n");
    fprintf(stderr,
            " -l       Write ''^L'' instead of formfeed between pages.\n");
    fprintf(stderr,
            " -u       National Swedish/Finnish characters printed as aaoAAO (default %s).\n", DEFSCAND ? "off" : "on");
    fprintf(stderr,
            " -s       National Swedish/Finnish characters printed as }{|][\\ (default %s).\n", DEFSCAND ? "on" : "off");
    fprintf(stderr,
            " -J       Allow processing of japanese fonts\n");
    fprintf(stderr,
            " -c       Override -a -u -s and print all characters 0-255.\n");
    fprintf(stderr,
            " -bdelim  Print font switch as text: delimcmr10miled\n");
    fprintf(stderr, " -h       This help message.\n");

    exit(uerr);

} /* usage */