Refactor cdbmake, add cdbmake_addv, cdb_hashv

Signed-off-by: Laurent Bercot <ska@appnovation.com>

1 files changed, 0 insertions, 121 deletions

diff --git a/src/libstddjb/cdbmake.c b/src/libstddjb/cdbmake.c
deleted file mode 100644
index 4cc4fc8..0000000
--- a/src/libstddjb/cdbmake.c
+++ /dev/null
@@ -1,121 +0,0 @@
-/* ISC license. */
-
-#include <unistd.h>
-#include <stdint.h>
-#include <errno.h>
-
-#include <skalibs/uint32.h>
-#include <skalibs/diuint32.h>
-#include <skalibs/buffer.h>
-#include <skalibs/genalloc.h>
-#include <skalibs/cdbmake.h>
-#include "cdb-internal.h"
-
-int cdbmake_start (cdbmaker *c, int fd)
-{
-  c->hplist = genalloc_zero ;
-  c->pos = 2048 ;
-  buffer_init(&c->b, &buffer_write, fd, c->buf, BUFFER_OUTSIZE) ;
-  return lseek(fd, c->pos, SEEK_SET) >= 0 ;
-}
-
-static int posplus (cdbmaker *c, uint32_t len)
-{
-  uint32_t newpos = c->pos + len ;
-  if (newpos < len) return (errno = ENOMEM, 0) ;
-  c->pos = newpos ;
-  return 1 ;
-}
-
-static inline int cdbmake_addend (cdbmaker *c, uint32_t keylen, uint32_t datalen, uint32_t h)
-{
-  diuint32 blah = { .left = h, .right = c->pos } ;
-  return genalloc_append(diuint32, &c->hplist, &blah) && posplus(c, 8) && posplus(c, keylen) && posplus(c, datalen) ;
-}
-
-static inline ssize_t cdbmake_addbegin (cdbmaker *c, uint32_t keylen, uint32_t datalen)
-{
-  char buf[8] ;
-  uint32_pack(buf, keylen) ;
-  uint32_pack(buf + 4, datalen) ;
-  return buffer_put(&c->b, buf, 8) == 8 ;
-}
-
-int cdbmake_add (cdbmaker *c, char const *key, uint32_t keylen, char const *data, uint32_t datalen)
-{
-  if (!cdbmake_addbegin(c, keylen, datalen)
-   || buffer_put(&c->b, key, keylen) < 0
-   || buffer_put(&c->b, data, datalen) < 0
-   || !cdbmake_addend(c, keylen, datalen, cdb_hash(key, keylen)))
-  {
-    genalloc_free(diuint32, &c->hplist) ;
-    return 0 ;
-  }
-  return 1 ;
-}
-
-int cdbmake_finish (cdbmaker *c)
-{
-  uint32_t count[256] ;
-  uint32_t start[256] ;
-  char final[2048] ;
-  unsigned int size = 1 ;
-  unsigned int n = genalloc_len(diuint32, &c->hplist) ;
-  unsigned int i = 0 ;
-  diuint32 *hp = genalloc_s(diuint32, &c->hplist) ;
-
-  for (; i < 256 ; i++) count[i] = 0 ;
-  for (i = 0 ; i < n ; i++) ++count[hp[i].left & 255] ;
-
-  {
-    uint32_t u = 0 ;
-    for (i = 0 ; i < 256 ; i++) start[i] = u += count[i] ; /* bounded by n */
-    for (i = 0 ; i < 256 ; i++)
-    {
-      u = count[i] << 1 ;
-      if (u > size) size = u ;
-    }
-    size += n ; /* no overflow possible up to now */
-    u = 0xffffffffUL ; u /= sizeof(diuint32) ;
-    if (size > u) return (errno = ENOMEM, 0) ;
-  }
-  i = n ;
-  {
-    diuint32 split[size] ;
-    while (i--) split[--start[hp[i].left & 255]] = hp[i] ;
-    genalloc_free(diuint32, &c->hplist) ;
-    hp = split + n ;
-
-    for (i = 0 ; i < 256 ; ++i)
-    {
-      char buf[8] ;
-      uint32_t k = count[i] ;
-      uint32_t len = k << 1 ;  /* no overflow possible */
-      diuint32 *p = split + start[i] ;
-
-      uint32_pack(final + (i << 3), c->pos) ;
-      uint32_pack(final + (i << 3) + 4, len) ;
-
-      for (uint32_t j = 0 ; j < len ; j++) hp[j].left = hp[j].right = 0 ;
-      for (uint32_t j = 0 ; j < k ; j++)
-      {
-        uint32_t where = (p->left >> 8) % len ;
-        while (hp[where].right) if (++where == len) where = 0 ;
-        hp[where] = *p++ ;
-      }
-
-      for (uint32_t j = 0 ; j < len ; j++)
-      {
-        uint32_pack(buf, hp[j].left) ;
-        uint32_pack(buf + 4, hp[j].right) ;
-        if (buffer_put(&c->b, buf, 8) < 0) return 0 ;
-        if (!posplus(c, 8)) return 0 ;
-      }
-    }
-  }
-
-  if (!buffer_flush(&c->b)
-   || lseek(buffer_fd(&c->b), 0, SEEK_SET) < 0
-   || buffer_putflush(&c->b, final, 2048) < 0) return 0 ;
-  return 1 ;
-}