cpp/galago/contrib/libstemmer_c/runtime/api.c

   1
   2 #include <stdlib.h> /* for calloc, free */
   3 #include "header.h"
   4
   5 extern struct SN_env * SN_create_env(int S_size, int I_size, int B_size)
   6 {
   7     struct SN_env * z = (struct SN_env *) calloc(1, sizeof(struct SN_env));
   8     if (z == NULL) return NULL;
   9     z->p = create_s();
  10     if (z->p == NULL) goto error;
  11     if (S_size)
  12     {
  13         int i;
  14         z->S = (symbol * *) calloc(S_size, sizeof(symbol *));
  15         if (z->S == NULL) goto error;
  16
  17         for (i = 0; i < S_size; i++)
  18         {
  19             z->S[i] = create_s();
  20             if (z->S[i] == NULL) goto error;
  21         }
  22     }
  23
  24     if (I_size)
  25     {
  26         z->I = (int *) calloc(I_size, sizeof(int));
  27         if (z->I == NULL) goto error;
  28     }
  29
  30     if (B_size)
  31     {
  32         z->B = (unsigned char *) calloc(B_size, sizeof(unsigned char));
  33         if (z->B == NULL) goto error;
  34     }
  35
  36     return z;
  37 error:
  38     SN_close_env(z, S_size);
  39     return NULL;
  40 }
  41
  42 extern void SN_close_env(struct SN_env * z, int S_size)
  43 {
  44     if (z == NULL) return;
  45     if (S_size)
  46     {
  47         int i;
  48         for (i = 0; i < S_size; i++)
  49         {
  50             lose_s(z->S[i]);
  51         }
  52         free(z->S);
  53     }
  54     free(z->I);
  55     free(z->B);
  56     if (z->p) lose_s(z->p);
  57     free(z);
  58 }
  59
  60 extern int SN_set_current(struct SN_env * z, int size, const symbol * s)
  61 {
  62     int err = replace_s(z, 0, z->l, size, s, NULL);
  63     z->c = 0;
  64     return err;
  65 }
  66