- I32 len;
- int retval;
-#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
-# define SEARCH_EXTS ".bat", ".cmd", NULL
-# define MAX_EXT_LEN 4
-#endif
-#ifdef OS2
-# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
-# define MAX_EXT_LEN 4
-#endif
-#ifdef VMS
-# define SEARCH_EXTS ".pl", ".com", NULL
-# define MAX_EXT_LEN 4
-#endif
- /* additional extensions to try in each dir if scriptname not found */
-#ifdef SEARCH_EXTS
- char *ext[] = { SEARCH_EXTS };
- int extidx = 0, i = 0;
- char *curext = Nullch;
-#else
-# define MAX_EXT_LEN 0
-#endif
-
- /*
- * If dosearch is true and if scriptname does not contain path
- * delimiters, search the PATH for scriptname.
- *
- * If SEARCH_EXTS is also defined, will look for each
- * scriptname{SEARCH_EXTS} whenever scriptname is not found
- * while searching the PATH.
- *
- * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
- * proceeds as follows:
- * If DOSISH or VMSISH:
- * + look for ./scriptname{,.foo,.bar}
- * + search the PATH for scriptname{,.foo,.bar}
- *
- * If !DOSISH:
- * + look *only* in the PATH for scriptname{,.foo,.bar} (note
- * this will not look in '.' if it's not in the PATH)
- */
-
-#ifdef VMS
-# ifdef ALWAYS_DEFTYPES
- len = strlen(scriptname);
- if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
- int hasdir, idx = 0, deftypes = 1;
- bool seen_dot = 1;
-
- hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
-# else
- if (dosearch) {
- int hasdir, idx = 0, deftypes = 1;
- bool seen_dot = 1;
-
- hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
-# endif
- /* The first time through, just add SEARCH_EXTS to whatever we
- * already have, so we can check for default file types. */
- while (deftypes ||
- (!hasdir && my_trnlnm("DCL$PATH",tokenbuf,idx++)) )
- {
- if (deftypes) {
- deftypes = 0;
- *tokenbuf = '\0';
- }
- if ((strlen(tokenbuf) + strlen(scriptname)
- + MAX_EXT_LEN) >= sizeof tokenbuf)
- continue; /* don't search dir with too-long name */
- strcat(tokenbuf, scriptname);
-#else /* !VMS */
-
-#ifdef DOSISH
- if (strEQ(scriptname, "-"))
- dosearch = 0;
- if (dosearch) { /* Look in '.' first. */
- char *cur = scriptname;
-#ifdef SEARCH_EXTS
- if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
- while (ext[i])
- if (strEQ(ext[i++],curext)) {
- extidx = -1; /* already has an ext */
- break;
- }
- do {
-#endif
- DEBUG_p(PerlIO_printf(Perl_debug_log,
- "Looking for %s\n",cur));
- if (Stat(cur,&statbuf) >= 0) {
- dosearch = 0;
- scriptname = cur;
-#ifdef SEARCH_EXTS
- break;
-#endif
- }
-#ifdef SEARCH_EXTS
- if (cur == scriptname) {
- len = strlen(scriptname);
- if (len+MAX_EXT_LEN+1 >= sizeof(tokenbuf))
- break;
- cur = strcpy(tokenbuf, scriptname);
- }
- } while (extidx >= 0 && ext[extidx] /* try an extension? */
- && strcpy(tokenbuf+len, ext[extidx++]));
-#endif
- }
-#endif