gdead.berkeley.edu/gdead.berkeley.edu.tar/gdead.berkeley.edu/pub/cad-tools/ciftomann.tar/cmd_dir/getargs.c

C/C++ Source or Header | 1988-01-28 | 4KB | 217 lines

#include <stdio.h>

extern char *user_log_file,
        *user_out_file,
        *cmd_file_name,
        *tmp_dir,
        basename[],
        *cif_file_name;

extern int dont_ask;
extern int silent;
extern int already_flat;

extern FILE *yyin;
extern FILE *cif_file;
FILE *fopen();

#define USAGE "Usage : ciftomann [-ys] [-l log_file] [-t tmp_dir] [-p pat_gen] -f cmd_file  -o out_file -i cif_file\n"

    /* get_args parses the command line for the various flags */

get_args(argc,argv)
int argc;
char **argv;
{
    char *ptr;
    FILE *out_file;

    yyin = NULL;

    if (argc == 1) {
    fprintf(stderr,USAGE);
    exit(1);
    }

    while ( argc-- > 1 ) {

    if (*(++argv)[0] == '-') {

        ptr = argv[0];

        switch (ptr[1]) {

        case 'a' :
            if (ptr[2] != '\0') {
            fprintf(stderr,"Usage is '-a basename'\n");
            exit(1);
            }

            if ((++argv)[0] == (char *) 0) {
            fprintf(stderr,"Basename is missing in -a option\n");
            fprintf(stderr,USAGE);
            exit(1);
            }

            (void) strcpy(basename, argv[0]);
            already_flat = 1;
            argc--;
            break;

        case 'f' :
            if (ptr[2] != '\0') {
            fprintf(stderr,"Usage is '-f cmd_file'\n");
            exit(1);
            }

            if ((++argv)[0] == (char *) 0) {
            fprintf(stderr,"Filename is missing in -f option\n");
            fprintf(stderr,USAGE);
            exit(1);
            }

            if ( (yyin = fopen(argv[0],"r")) == NULL) {
            fprintf(stderr,"Cannot open command file %s\n",
                argv[0]);
            exit(1);
            }

            cmd_file_name = argv[0];
            argc--;
            break;

        case 'i' :
            if (ptr[2] != '\0') {
            fprintf(stderr,"Usage is '-i cif_file'\n");
            exit(1);
            }

            if ((++argv)[0] == (char *) 0) {
            fprintf(stderr,"Filename is missing in -i option\n");
            fprintf(stderr,USAGE);
            exit(1);
            }

            cif_file_name = argv[0];

            if ( (cif_file = fopen(cif_file_name,"r")) == NULL ) {
            fprintf(stderr,"Cannot open the cif file %s\n",
                argv[0]);
            exit(1);
            }

            fclose(cif_file);

            argc--;
            break;

        case 't' :
            if (ptr[2] != '\0') {
            fprintf(stderr,"Usage is '-t tmp_dir'\n");
            exit(1);
            }

            if ((++argv)[0] == (char *) 0) {
            fprintf(stderr,"Directory name is missing in -t option\n");
            exit(1);
            }

            tmp_dir = *argv;
            argc--;
            break;

        case 'p' :
            if (ptr[2] != '\0') {
            fprintf(stderr,"Usage is '-p pat_gen'\n");
            exit(1);
            }

            if ((++argv)[0] == (char *) 0) {
            fprintf(stderr,"Pattern Generator name is missing in -p option\n");
            exit(1);
            }

            find_pg_desc(*argv);
            argc--;
            break;

        case 'l' :
            if (ptr[2] != '\0') {
            fprintf(stderr,"Usage is '-l log_file'\n");
            exit(1);
            }

            if ((++argv)[0] == (char *) 0) {
            fprintf(stderr,"Filename is missing in -l option\n");
            exit(1);
            }

            user_log_file = *argv;
            argc--;
            break;

        case 'o' :
            if (ptr[2] != '\0') {
            fprintf(stderr,"Usage is '-o out_file'\n");
            exit(1);
            }

            if ((++argv)[0] == (char *) 0) {
            fprintf(stderr,"Filename is missing in -o option\n");
            exit(1);
            }


            user_out_file  = *argv;
            argc--;
            break;

        default :
            while ( *(++ptr) != '\0' ) {

            switch (*ptr) {

                case 'y' :

                dont_ask++;
                break;

                case 's' :

                silent++;
                dont_ask++;
                break;

                default :

                fprintf(stderr,"Unknown flag %c\n",*ptr);
                exit(1);
            }
            }
        }
    } else {
        fprintf(stderr,"Unrecognizable option, '%s'\n",argv[0]);
        fprintf(stderr,USAGE);
    }
    }

    if ( user_out_file == (char *) 0 ) {
    fprintf(stderr,"No out_file given\n");
    fprintf(stderr,USAGE);
    exit(1);
    }

    if ( cif_file_name == (char *) 0 ) {
    fprintf(stderr,"No cif_file given\n");
    fprintf(stderr,USAGE);
    exit(1);
    }

    if ( yyin == NULL ) {
    fprintf(stderr,"No cmd_file given\n");
    fprintf(stderr,USAGE);
    exit(1);
    }

}