+/*----------------------------------------------------------------------.
+| Format O as a null-terminated decimal string into BUF _backwards_; |
+| return pointer to start of result. |
+`----------------------------------------------------------------------*/
+char *
+stringify_uintmax_t_backwards (uintmax_t o, char *buf)
+{
+ *--buf = '\0';
+ do
+ *--buf = '0' + (int) (o % 10);
+ while ((o /= 10) != 0);
+ return buf;
+}
+
+#if !USE_OLD_CTIME
+
+/*-------------------------------------------.
+| Return the time formatted along ISO 8601. |
+`-------------------------------------------*/
+
+/* Also, see http://www.ft.uni-erlangen.de/~mskuhn/iso-time.html. */
+
+static char *
+isotime (const time_t *time)
+{
+ static char buffer[INT_STRLEN_BOUND (int) + 16];
+ struct tm *tm = localtime (time);
+ if (tm)
+ sprintf (buffer, "%04d-%02d-%02d %02d:%02d:%02d",
+ tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
+ else
+ /* Interpose %s between ?? and - to avoid ANSI C trigraph brain damage. */
+ sprintf (buffer, "????%s-??%s-?? ??:??:??", "", "");
+
+ return buffer;
+}
+
+#endif /* not USE_OLD_CTIME */
+
+/*-------------------------------------------------------------------------.
+| Decode MODE from its binary form in a stat structure, and encode it into |
+| a 9 characters string STRING, terminated with a NUL. |
+`-------------------------------------------------------------------------*/
+
+static void
+decode_mode (mode_t mode, char *string)
+{
+ *string++ = mode & S_IRUSR ? 'r' : '-';
+ *string++ = mode & S_IWUSR ? 'w' : '-';
+ *string++ = (mode & S_ISUID
+ ? (mode & S_IXUSR ? 's' : 'S')
+ : (mode & S_IXUSR ? 'x' : '-'));
+ *string++ = mode & S_IRGRP ? 'r' : '-';
+ *string++ = mode & S_IWGRP ? 'w' : '-';
+ *string++ = (mode & S_ISGID
+ ? (mode & S_IXGRP ? 's' : 'S')
+ : (mode & S_IXGRP ? 'x' : '-'));
+ *string++ = mode & S_IROTH ? 'r' : '-';
+ *string++ = mode & S_IWOTH ? 'w' : '-';
+ *string++ = (mode & S_ISVTX
+ ? (mode & S_IXOTH ? 't' : 'T')
+ : (mode & S_IXOTH ? 'x' : '-'));
+ *string = '\0';
+}
+
+/*-------------------------------------------------------------------------.
+| Actually print it. |
+| |
+| Plain and fancy file header block logging. Non-verbose just prints the |
+| name, e.g. for "tar t" or "tar x". This should just contain file names, |
+| so it can be fed back into tar with xargs or the "-T" option. The |
+| verbose option can give a bunch of info, one line per file. I doubt |
+| anybody tries to parse its format, or if they do, they shouldn't. Unix |
+| tar is pretty random here anyway. |
+`-------------------------------------------------------------------------*/
+
+/* FIXME: Note that print_header uses the globals HEAD, HSTAT, and
+ HEAD_STANDARD, which must be set up in advance. Not very clean... */
+
+/* UGSWIDTH starts with 18, so with user and group names <= 8 chars, the
+ columns never shift during the listing. */
+#define UGSWIDTH 18
+static int ugswidth = UGSWIDTH; /* maximum width encountered so far */
+
+/* DATEWIDTH is the number of columns taken by the date and time fields. */
+#if USE_OLD_CDATE
+# define DATEWIDTH 19
+#else
+# define DATEWIDTH 18
+#endif
+