Andrew's git - gitweb.git/blob

   1#include "cache.h"
   2#include "diff.h"
   3#include "diffcore.h"
   4#include "delta.h"
   5#include "count-delta.h"
   6
   7static int diffcore_count_changes_1(void *src, unsigned long src_size,
   8                                    void *dst, unsigned long dst_size,
   9                                    unsigned long delta_limit,
  10                                    unsigned long *src_copied,
  11                                    unsigned long *literal_added)
  12{
  13        void *delta;
  14        unsigned long delta_size;
  15
  16        delta = diff_delta(src, src_size,
  17                           dst, dst_size,
  18                           &delta_size, delta_limit);
  19        if (!delta)
  20                /* If delta_limit is exceeded, we have too much differences */
  21                return -1;
  22
  23        /* Estimate the edit size by interpreting delta. */
  24        if (count_delta(delta, delta_size, src_copied, literal_added)) {
  25                free(delta);
  26                return -1;
  27        }
  28        free(delta);
  29        return 0;
  30}
  31
  32int diffcore_count_changes(void *src, unsigned long src_size,
  33                           void *dst, unsigned long dst_size,
  34                           unsigned long delta_limit,
  35                           unsigned long *src_copied,
  36                           unsigned long *literal_added)
  37{
  38        return diffcore_count_changes_1(src, src_size,
  39                                        dst, dst_size,
  40                                        delta_limit,
  41                                        src_copied,
  42                                        literal_added);
  43}