oscam-array.c

   1 #define MODULE_LOG_PREFIX "array"
   2
   3 #include "globals.h"
   4 #include "oscam-string.h"
   5
   6 void array_clear(void **arr_data, int32_t *arr_num_entries)
   7 {
   8         *arr_num_entries = 0;
   9         if (arr_data)
  10         {
  11                 free(*arr_data);
  12                 *arr_data = NULL;
  13         }
  14 }
  15
  16 bool array_clone(void **src_arr_data, int32_t *src_arr_num_entries, uint32_t entry_size, void **dst_arr_data, int32_t *dst_arr_num_entries)
  17 {
  18         array_clear(dst_arr_data, dst_arr_num_entries);
  19         if (!src_arr_data || !dst_arr_data || !*src_arr_data)
  20                 return false;
  21         if (!cs_malloc(dst_arr_data, *src_arr_num_entries * entry_size))
  22                 return false;
  23         memcpy(*dst_arr_data, *src_arr_data, *src_arr_num_entries * entry_size);
  24         *dst_arr_num_entries = *src_arr_num_entries;
  25         return true;
  26 }
  27
  28 bool array_add(void **arr_data, int32_t *arr_num_entries, uint32_t entry_size, void *new_entry)
  29 {
  30         if (!cs_realloc(arr_data, (*arr_num_entries + 1) * entry_size))
  31                 return false;
  32         memcpy(*arr_data + (*arr_num_entries * entry_size), new_entry, entry_size);
  33         *arr_num_entries += 1;
  34         return true;
  35 }
  36
  37 /* Array functions for different types */
  38 #define DECLARE_ARRAY_FUNCS(NAME, BASE_TYPE, DATA_TYPE, DATA_FIELD, NUM_FIELD) \
  39         void NAME##_clear(BASE_TYPE *in) \
  40         { \
  41                 if (!in) return; \
  42                 void *pin = in->DATA_FIELD; /* Prevent warnings about strict-aliasing rules */ \
  43                 array_clear(&pin, &in->NUM_FIELD); \
  44                 in->DATA_FIELD = pin; \
  45         } \
  46         \
  47         bool NAME##_clone(BASE_TYPE *src, BASE_TYPE *dst) \
  48         { \
  49                 if (!src || !dst) return false; \
  50                 void *psrc = src->DATA_FIELD, *pdst = dst->DATA_FIELD; /* Prevent warnings about strict-aliasing rules */ \
  51                 bool ret = array_clone(&psrc, &src->NUM_FIELD, sizeof(*src->DATA_FIELD), &pdst, &dst->NUM_FIELD); \
  52                 dst->DATA_FIELD = pdst; \
  53                 return ret; \
  54         } \
  55         \
  56         bool NAME##_add(BASE_TYPE *in, DATA_TYPE *td) \
  57         { \
  58                 if (!in) return false; \
  59                 void *pin = in->DATA_FIELD; /* Prevent warnings about strict-aliasing rules */ \
  60                 bool ret = array_add(&pin, &in->NUM_FIELD, sizeof(*in->DATA_FIELD), td); \
  61                 in->DATA_FIELD = pin; \
  62                 return ret; \
  63         }
  64
  65 DECLARE_ARRAY_FUNCS(ftab, FTAB, FILTER, filts, nfilts); // Declare ftab_clear(), ftab_clone(), ftab_add()
  66 DECLARE_ARRAY_FUNCS(tuntab, TUNTAB, TUNTAB_DATA, ttdata, ttnum); // Declare tuntab_clear(), tuntab_clone(), tuntab_add()
  67 DECLARE_ARRAY_FUNCS(ecm_whitelist, ECM_WHITELIST, ECM_WHITELIST_DATA, ewdata, ewnum); // Declare ecm_whitelist_clear(), ecm_whitelist_clone(), ecm_whitelist_add()
  68 DECLARE_ARRAY_FUNCS(ecm_hdr_whitelist, ECM_HDR_WHITELIST, ECM_HDR_WHITELIST_DATA, ehdata, ehnum); // Declare ecm_hdr_whitelist_clear(), ecm_hdr_whitelist_clone(), ecm_hdr_whitelist_add()
  69 DECLARE_ARRAY_FUNCS(caidvaluetab, CAIDVALUETAB, CAIDVALUETAB_DATA, cvdata, cvnum); // Declare caidvaluetab_clear(), caidvaluetab_clone(), caidvaluetab_add()
  70 DECLARE_ARRAY_FUNCS(caidtab, CAIDTAB, CAIDTAB_DATA, ctdata, ctnum); // Declare caidtab_clear(), caidtab_clone(), caidtab_add()
  71 DECLARE_ARRAY_FUNCS(cecspvaluetab, CECSPVALUETAB, CECSPVALUETAB_DATA, cevdata, cevnum); // Declare cecspvaluetab_clear(), cecspvaluetab_clone(), cecspvaluetab_add()
  72 DECLARE_ARRAY_FUNCS(cwcheckvaluetab, CWCHECKTAB, CWCHECKTAB_DATA, cwcheckdata, cwchecknum); // Declare cwcheckvaluetab_clear(), cwcheckvaluetab_clone(), cwcheckvaluetab_add()
  73
  74 #undef DECLARE_ARRAY_FUNCS