source: buchla-68k/orig/GP/BASENAM.C

/*
   ============================================================================
        basenam.c -- Extract base name from a path
        Version 4 -- 1988-07-13 -- D.N. Lynx Crowe

        Extracts the base name of a file from a path.

                char *
                basenam(s)
                char *s;

        Can be used with MSDOS, PCDOS, GEMDOS, or Unix(tm) with suitable
        defines for SWITCHAR and DRIVES, as follows:

        For Unix(tm):
                SWITCHAR        '/'
                DRIVES          FALSE

        For MSDOS or PCDOS:
                SWITCHAR        swchar()        function to get DOS SWITCHAR
                DRIVES          (c == ':')

        For GEMDOS:
                SWITCHAR        '\\'
                DRIVES          (c == ':')

        Define TESTER to get a test program and edit the array of test cases
        for the system you're compiling for.
   ============================================================================
*/

#define FALSE           0

#define SWITCHAR        '\\'            /* TOS definition */
#define DRIVES          (c == ':')      /* TOS / MSDOS / PCDOS definition */

/* 
 */

/*
   ============================================================================
        basenam(s) -- extract the base name from the path at s
   ============================================================================
*/

char *
basenam(s)
char *s;
{
        register char *cp = s;
        register char c;

        while ('\0' != *s) {

                c = *s++;

                if ((c == SWITCHAR) || DRIVES)
                        cp = s;
        }

        return(cp);
}

/* 
 */

#ifdef  TESTER

#include "stdio.h"

char *t[] = {           /* test cases for GEMDOS */

        "simple.one",
        "c:more.doc",
        "c:\\more",
        "\\yet\\more.doc",
        "another.1\\yet.more\\complex\\",
        "and\\still.one\\more",
        NULL
};

main()
{
        register int n = 0;
        register char *p;

        while (NULL != (p = t[n++]) )
                printf("%s returned %s\n", p, basenam(p));

        printf("Done.\n");
        exit(0);
}

#endif