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- /* Copyright (C) 1981,1982, 1983 by Manx Software Systems */
- #include <errno.h>
- #include <fcntl.h>
- #ifndef NULL
- #define NULL ((void *)0)
- #endif
-
- char *get_first(), *get_next(), *sbrk();
-
- #define ARGMAX 256
- static char *Argv[ARGMAX];
- static int argvsize;
- static int Argc;
- static char curr_path[128];
-
- noper()
- {
- return 0;
- }
-
- int (*cls_)() = noper;
- extern char _ioflg[];
-
- Croot(cp, first)
- register char *cp;
- {
- register char *cp2;
- char *save;
- char *wild_match;
- char *index(),*rindex(), *save_str();
- char *path,*copy; int j;
-
- _ioflg[0] = isatty(0); /* set flag for i/o routines */
- _ioflg[1] = isatty(1); /* set flag for i/o routines */
- _ioflg[2] = isatty(2); /* set flag for i/o routines */
-
-
- /* Null out first argument */
- Argv[0] = "";
- Argc = first;
-
- /* loop through arguments */
- for (;;)
- {
- /* skip blanks */
- while (*cp == ' ' || *cp == '\t')
- ++cp;
-
- /* if you're at the end of command line, you're done */
- if (*cp == 0)
- break;
-
- /* find beginning of next argument */
- cp2 = cp; /* save original pointer to the string */
- *cp2 = (*cp2 == '/' ? '\\' : *cp2);
- while (*++cp2)
- {
- /* if you hit a space char - stick a null in to terminate last
- argument
- */
- if (*cp2 == ' ' || *cp2 == '\t')
- {
- *cp2++ = 0;
- break;
- }
- *cp2 = (*cp2 == '/' ? '\\' : *cp2);
- }
-
- /* if no wild card characters, do it the old fashioned way */
- if (index(cp,'*') == NULL && index(cp,'?') == NULL)
- {
- /* update the next argv pointer */
- Argv[Argc] = cp;
- /* bump the argument count */
- if (++Argc == ARGMAX)
- abort();
- }
- else
- {
- /* if there is a path included, save it off */
- if ((path = rindex(cp,'\\')) || (path = rindex(cp,'/')))
- {
- copy = cp;
- /* copy to curr_path, mapping / to \ */
- for (j = 0; j < sizeof(curr_path) && copy != path+1; copy++,j++)
- curr_path[j] = (*copy == '/' ? '\\' : *copy);
- /* terminate string */
- curr_path[j] = '\0';
- }
- else
- /* null path */
- curr_path[0] = 0;
- if (wild_match = get_first(cp))
- {
- /* update the next argv pointer */
- Argv[Argc]= save_str(wild_match);
- /* bump the argument count */
- if (++Argc == ARGMAX)
- abort();
- /* get the rest of the matching file names */
- while (wild_match = get_next())
- {
-
- /* update the next argv pointer */
- Argv[Argc] = save_str(wild_match);
- /* bump the argument count */
- if (++Argc == ARGMAX)
- abort();
- }
- }
- }
- cp = cp2; /* point to beginning of next argument */
- }
- Argv[Argc] = NULL;
- main(Argc,Argv);
- exit(0);
- }
-
- char *save_str(s)
- register char *s;
- {
- register char *r;
- int pathlen;
- /* squirrel away matched file name */
- if (NULL == (r = sbrk(strlen(s)+(pathlen = strlen(curr_path))+1)))
- abort();
- strcat(curr_path,s);
- strcpy(r,curr_path);
- curr_path[pathlen] = '\0';
- return r;
- }
-
- abort()
- {
- write(2, "Too many args.", 14);
- _exit(200);
- }
-
- exit(code)
- {
- (*cls_)();
- _exit(code);
- }
-
- typedef struct
- {
- char dos_reserved[21];
- char attribute;
- unsigned file_time;
- unsigned file_date;
- long file_size;
- char file_name[13];
- } fcb;
- fcb wildcard;
-
- char *get_first(fname)
- char *fname;
- {
- register int result;
- /* set the disk transfer address */
- bdos(0x1A,&wildcard);
- result = bdos(0x4E,fname,0);
- /* make the find first call */
- if(2 == result || 18 == result)
- return NULL;
- return &(wildcard.file_name[0]);
- }
-
- char *get_next(fname)
- char *fname;
- {
- register int result;
- /* set the disk transfer address */
- bdos(0x1A,&wildcard);
- result = bdos(0x4f,0,0);
- /* make the find next call */
- if (18 == result)
- return NULL;
- return &(wildcard.file_name[0]);
- }
-