-/* Return the filename, turning any non-printable characters into escaped
- * characters (e.g. \n -> \012, \ -> \\). This ensures that outputting it
- * cannot generate an empty line nor corrupt the screen. This function can
- * return only MAX_SAFE_NAMES values at a time! The returned value can be
- * longer than MAXPATHLEN (because we may be trying to output an error about
- * a too-long filename)! */
-char *safe_fname(const char *fname)
-{
-#define MAX_SAFE_NAMES 4
- static char fbuf[MAX_SAFE_NAMES][MAXPATHLEN*2];
- static int ndx = 0;
- int limit = sizeof fbuf / MAX_SAFE_NAMES - 1;
- char *t;
-
- ndx = (ndx + 1) % MAX_SAFE_NAMES;
- for (t = fbuf[ndx]; *fname; fname++) {
- if (*fname == '\\') {
- if ((limit -= 2) < 0)
- break;
- *t++ = '\\';
- *t++ = '\\';
- } else if (!isprint(*(uchar*)fname)) {
- if ((limit -= 4) < 0)
- break;
- sprintf(t, "\\%03o", *(uchar*)fname);
- t += 4;
- } else {
- if (--limit < 0)
- break;
- *t++ = *fname;
- }
- }
- *t = '\0';
-
- return fbuf[ndx];
-}
-