mdw@git.distorted.org.uk Git - qmail/blob - readsubdir.c

   1 #include "readsubdir.h"
   2 #include "fmt.h"
   3 #include "scan.h"
   4 #include "str.h"
   5 #include "auto_split.h"
   6
   7 void readsubdir_init(rs,name,pause)
   8 readsubdir *rs;
   9 char *name;
  10 void (*pause)();
  11 {
  12  rs->name = name;
  13  rs->pause = pause;
  14  rs->dir = 0;
  15  rs->pos = 0;
  16 }
  17
  18 static char namepos[FMT_ULONG + 4 + READSUBDIR_NAMELEN];
  19
  20 int readsubdir_next(rs,id)
  21 readsubdir *rs;
  22 unsigned long *id;
  23 {
  24  direntry *d;
  25  unsigned int len;
  26
  27  if (!rs->dir)
  28   {
  29    if (rs->pos >= auto_split) return 0;
  30    if (str_len(rs->name) > READSUBDIR_NAMELEN) { rs->pos++; return -1; }
  31    len = 0;
  32    len += fmt_str(namepos + len,rs->name);
  33    namepos[len++] = '/';
  34    len += fmt_ulong(namepos + len,(unsigned long) rs->pos);
  35    namepos[len] = 0;
  36    while (!(rs->dir = opendir(namepos))) rs->pause(namepos);
  37    rs->pos++;
  38    return -1;
  39   }
  40
  41  d = readdir(rs->dir);
  42  if (!d) { closedir(rs->dir); rs->dir = 0; return -1; }
  43
  44  if (str_equal(d->d_name,".")) return -1;
  45  if (str_equal(d->d_name,"..")) return -1;
  46  len = scan_ulong(d->d_name,id);
  47  if (!len || d->d_name[len]) return -2;
  48  return 1;
  49 }